Grain unloading height adjusting device and combine harvester

Abstract

The utility model provides a kind of unloading height adjusting device and combine harvester, comprising: grain tank, is provided with the fixed frame with at least two adjusting holes, the height of each adjusting hole is different;Unloading cylinder, one end and the grain tank communication and can rotate relative to the grain tank, the other end is provided with unloading port;Telescopic drive part, installation end is used for and the adjusting hole of any height can be detachably connected, output end and the unloading cylinder are connected, and the telescopic drive part is used to drive the unloading cylinder relative to the grain tank in vertical plane rotates.The utility model can be according to the form of farmer's grain receiving car, quickly and effectively replace the adjusting hole connected by unloading cylinder, so that the height adjustment range of unloading cylinder can adapt to different grain receiving car form, can avoid telescopic drive part telescopic stroke constraint to cause the case that unloading cylinder lowest position is higher, so that unloading height adjusting device can adapt to existing various unloading height demand.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, and in particular relates to a grain unloading height adjustment device and a combine harvester. Background Technology

[0002] After the combine harvester's grain bin is full, the grain needs to be unloaded into a receiving truck. Due to differences in plot size and transportation, the receiving trucks vary from region to region. Large farms typically use tall trailers, while smaller farms usually use low-profile three-wheeled trucks with smaller cargo boxes. Given this harvesting situation, to reduce grain spillage caused by an excessively high unloading hopper, the current method primarily involves manually rotating the unloading hopper to adjust its height. However, manual adjustment has limited travel and low efficiency. If the maximum unloading height is to be guaranteed, the minimum unloading height will be restricted. This results in the grain outlet being too far from the receiving truck when unloading into the three-wheeled truck, making the unloading height adjustment method unsuitable for current needs and prone to grain spillage. Utility Model Content

[0003] The main purpose of this utility model is to propose a grain unloading height adjustment device and a combine harvester, which aims to solve the technical problem that the grain unloading height adjustment of the combine harvester in the prior art cannot meet the needs of the current use scenarios.

[0004] To achieve the above objectives, this utility model provides a grain unloading height adjustment device, which includes: a grain tank with a fixed frame having at least two adjustment holes of different heights; a grain unloading cylinder with one end connected to the grain tank and rotatable relative to the grain tank, and the other end having a grain unloading port; and a telescopic drive component with its mounting end detachably connected to the adjustment holes of any height and its output end connected to the grain unloading cylinder, the telescopic drive component driving the grain unloading cylinder to rotate relative to the grain tank in a vertical plane.

[0005] In this embodiment of the utility model, the fixing frame is disposed on the rear side of the grain box, and the fixing frame extends from front to back, and the adjustment holes are arranged sequentially along the length direction of the fixing frame.

[0006] In this embodiment of the invention, the height of the adjustment hole gradually decreases from front to back.

[0007] In this embodiment of the invention, an avoidance groove is provided between any two adjacent adjustment holes to avoid the telescopic drive component.

[0008] In this embodiment of the utility model, the fixing frame is detachably connected to the grain box through the mounting hole, and an avoidance notch is provided between the mounting hole and the adjustment hole.

[0009] In this embodiment of the utility model, the unloading height adjustment device further includes an unloading bend disposed on the grain tank. The unloading cylinder includes a horizontal part and a bend part. One end of the bend part is connected to the horizontal part, and the other end is rotatably connected to the unloading bend. The fixing frame is disposed on the unloading bend, and the output end of the telescopic drive is connected to the horizontal part.

[0010] In this embodiment of the utility model, the unloading bend and the grain box are detachably connected, and the bend and the horizontal part are detachably connected.

[0011] In this embodiment of the utility model, the grain bin is provided with an installation plate, and the fixing frame includes fixing plates disposed on both sides of the installation plate. Both fixing plates are connected to the installation plate, and each fixing plate is provided with at least two adjustment holes, and the adjustment holes on the two fixing plates are aligned.

[0012] In this embodiment of the utility model, the outer wall of the unloading cylinder is provided with a mounting bracket connected to the telescopic drive component; and / or; a guide plate is provided on the unloading cylinder, and the guide plate surrounds the unloading port.

[0013] This utility model also proposes a combine harvester, which includes the unloading height adjustment device as described above.

[0014] Through the above technical solution, the grain unloading height adjustment device provided in this utility model embodiment has the following beneficial effects: By optimizing the structure of the fixing frame, at least two adjustment holes of different heights are provided on the fixing frame, enabling at least two grain unloading cylinders to be height-adjustable. When the adjustment hole connected to the telescopic drive component is of a higher height, this hole is used for taller grain receiving vehicles; when the adjustment hole connected to the telescopic drive component is of a lower height, this hole is used for shorter grain receiving vehicles. One end of the telescopic drive component can be connected to the adjustment hole of the fixing frame via a pin or bolt, and the other end of the telescopic drive component is connected to the grain unloading cylinder. When the telescopic drive component is working, the piston rod of the telescopic drive component extends, driving the grain unloading cylinder to rotate relative to the grain box in the vertical plane, thereby achieving the height adjustment of the unloading port. Before the combine harvester is placed in the field, the unloading height adjustment device can quickly and effectively change the adjustment hole connected to the unloading cylinder according to the type of grain receiving vehicle used by the farmer. This allows the height adjustment range of the unloading cylinder to adapt to different types of grain receiving vehicles, achieving the goal of simple operation and preventing grain spillage during unloading. This ensures that grain is not spilled during unloading, reducing user losses. It also avoids the situation where the lowest position of the unloading cylinder is too high due to the limitation of the telescopic drive stroke, making the unloading height adjustment device adaptable to various existing unloading height requirements.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of the grain unloading height adjustment device according to an embodiment of the present invention; Figure 2 yes Figure 1 Enlarged view of region A in the middle; Figure 3 This is a structural schematic diagram of the unloading height adjustment device under different states according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the fixed plate structure of the grain unloading height adjustment device according to an embodiment of the present utility model.

[0017] Explanation of reference numerals in the attached figures Detailed Implementation

[0018] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0019] The unloading height adjustment device according to the present invention is described below with reference to the accompanying drawings.

[0020] like Figures 1 to 3 As shown in the embodiment of this utility model, the unloading height adjustment device includes a grain tank 1, an unloading cylinder 2, and a telescopic drive 3. The grain tank 1 is provided with a fixed frame 11 having at least two adjustment holes 111, each with a different height. One end of the unloading cylinder 2 is connected to the grain tank 1 and can rotate relative to the grain tank 1, while the other end is provided with a unloading port. The mounting end of the telescopic drive 3 is detachably connected to the adjustment hole 111 of any height, and the output end is connected to the unloading cylinder 2. The telescopic drive 3 is used to drive the unloading cylinder 2 to rotate relative to the grain tank 1 in a vertical plane.

[0021] In this embodiment, the unloading height adjustment device is mainly used for unloading grain from the combine harvester. The unloading cylinder 2 and the grain box 1 are rotatably connected. The telescopic drive component 3 can be a lifting oil cylinder or a lifting air cylinder or other drive component that can achieve lifting.

[0022] In this embodiment, by optimizing the structure of the fixing frame 11, at least two adjustment holes 111 of different heights are provided on the fixing frame 11, realizing the function of adjusting the height of at least two unloading cylinders 2. When the adjustment hole 111 connected to the telescopic drive 3 is a hole with a higher height, this hole is used for taller grain receiving vehicles; when the adjustment hole 111 connected to the telescopic drive 3 is a hole with a lower height, this hole is used for shorter grain receiving vehicles. One end of the telescopic drive 3 can be connected to the adjustment hole 111 of the fixing frame 11 by means of a pin or bolt, and the other end of the telescopic drive 3 is connected to the unloading cylinder 2. When the telescopic drive 3 is working, the piston rod of the telescopic drive 3 can extend to drive the unloading cylinder 2 to rotate relative to the grain box 1 in the vertical plane, thereby realizing the height adjustment of the unloading port. In this embodiment, before the combine harvester is placed in the field, the adjustment hole 111 connected to the unloading cylinder 2 can be quickly and effectively changed according to the type of grain receiving vehicle used by the farmer. This allows the height adjustment range of the unloading cylinder 2 to adapt to different types of grain receiving vehicles, achieving the purpose of simple operation and preventing grain spillage during unloading. This ensures that grain is not spilled during unloading, reduces user losses, and avoids the situation where the lowest position of the unloading cylinder 2 is too high due to the limitation of the telescopic drive component 3's telescopic stroke. This allows the unloading height adjustment device to adapt to various existing unloading height requirements.

[0023] like Figure 3 As shown, in one embodiment, the fixed frame 11 is provided with two sets of adjustment holes 111 of different heights. One set of adjustment holes 111 is a high-position hole, and the other set of adjustment holes 111 is a low-position hole. When the unloading hopper 2 is connected to the high-position hole, the adjustment height range is from the highest position I to the lowest position I, which can be applied to tall grain receiving vehicles. When the unloading hopper 2 is connected to the low-position hole, the adjustment height range is from the highest position II to the lowest position II, which can be applied to short grain receiving vehicles. At least two sets of height adjustment can be achieved. Different adjustment holes 111 are used according to different types of grain receiving vehicles, so as to achieve unloading without spilling grain and reduce user losses.

[0024] Specifically, the fixing frame 11 is located at the rear of the grain tank 1, and extends from front to back, with adjustment holes 111 arranged sequentially along the length of the fixing frame 11. For example... Figure 1 As shown, the fixing frame 11 is located at the rear end of the grain tank 1. The fixing frame 11 extends in the front-to-back direction, which can avoid interference between the fixing frame 11 and other parts on the grain tank 1. At least two adjustment holes 111 are arranged in sequence in the front-to-back direction on the fixing frame 11, which can facilitate the disassembly and assembly of the unloading hopper 2.

[0025] like Figure 4As shown, the height of the adjustment holes 111 gradually decreases from front to back. The higher hole of at least two adjustment holes 111 is located at the front end of the fixed frame 11, and the lower hole is located at the rear end of the fixed frame 11. By adjusting the height of the adjustment holes 111 sequentially decreasing along the front-back direction of the fixed frame 11, it is convenient for personnel to adjust the height of the grain unloading height adjustment device.

[0026] In one embodiment, a clearance groove 112 is provided between any two adjacent adjustment holes 111 to avoid the telescopic drive component 3. In this embodiment, the clearance groove 112 is an arc-shaped groove. By providing the clearance groove 112 between any two adjacent adjustment holes 111, the installation and telescopic drive component 3 can be facilitated, the situation of the fixing frame 11 interfering with the telescopic drive component 3 can be avoided, and the weight of the fixing frame 11 can be reduced.

[0027] like Figures 1 to 4 As shown, the mounting bracket 11 is detachably connected to the grain tank 1 via mounting holes 115, and a clearance notch 113 is provided between the mounting holes 115 and the adjustment holes 111. The number of mounting holes 115 can be set according to actual usage requirements, such as... Figure 4 As shown, in one embodiment, three mounting holes 115 are arranged sequentially in the vertical direction, and adjustment holes 111 are all located on the rear side of the mounting holes 115. The connection between the three mounting holes 115 and the grain box 1 can ensure the installation stability of the fixing frame 11.

[0028] It should be noted that the unloading height adjustment device also includes an unloading bend 13 installed in the grain tank 1. The unloading cylinder 2 includes a horizontal part 21 and a bend part 22. One end of the bend part 22 is connected to the horizontal part 21, and the other end is rotatably connected to the unloading bend 13. The fixing frame 11 is installed in the unloading bend 13, and the output end of the telescopic drive 3 is connected to the horizontal part 21. Figure 1 As shown, the unloading bend 13 in this embodiment includes a vertical section and a horizontal section. The vertical section is fixed to the grain box 1 by a fixing seat. The horizontal section and the bend 22 are connected by a stop and a limiting plate. The horizontal section of the bend 22 and the horizontal section of the unloading bend 13 are rotatably connected. The vertical section and the horizontal section 21 of the bend 22 can be connected by bolts to form a rigid connection. The fixing frame 11 can be connected to the horizontal section of the unloading bend 13 by bolts.

[0029] Understandably, the unloading bend 13 and the grain tank 1 are detachably connected, and the bend section 22 and the horizontal section 21 are detachably connected. The detachable connection between the unloading bend 13 and the grain tank 1 in this embodiment, through a multi-section detachable connection, facilitates the disassembly and assembly of the unloading height adjustment device, as well as subsequent maintenance and replacement of components.

[0030] In one embodiment, a mounting plate 12 is provided on the grain tank 1. A fixing frame 11 includes fixing plates 114 disposed on both sides of the mounting plate 12. Both fixing plates 114 are connected to the mounting plate 12, and each fixing plate 114 is provided with at least two adjustment holes 111, with the adjustment holes 111 on the two fixing plates 114 aligned. The mounting plate 12 is disposed at the rear end of the unloading bend 13 of the grain tank 1. The number of mounting plates 12 can be set according to actual usage requirements, such as... Figure 2 As shown, two mounting plates 12 are arranged sequentially in the vertical direction, and two fixing plates 114 are respectively disposed on the left and right sides of the mounting plates 12. The telescopic drive component 3 is connected through the two fixing plates 114, which can ensure the connection stability between the telescopic drive component 3 and the fixing frame 11. In one embodiment, the fixing plates 114 and the telescopic drive component 3 can be hinged by a pin. The pin can pass through the two fixing plates 114 and the telescopic drive component 3. The telescopic drive component 3 can be disassembled and assembled by inserting and removing the pin, which can facilitate the adjustment of the grain unloading height adjustment device.

[0031] In this embodiment of the invention, the outer wall of the unloading cylinder 2 is provided with a mounting bracket 23 connected to the telescopic drive component 3. Specifically, the mounting bracket 23 can be set on the horizontal part 21 near the bend 22, which can reduce the connection length between the telescopic drive component 3 and the unloading cylinder 2. By setting the mounting bracket 23 on the outside of the horizontal part 21, it is convenient to assemble and disassemble the telescopic drive component 3 and the unloading cylinder 2, avoiding the situation of grain leakage due to drilling holes in the unloading cylinder 2. Furthermore, a guide plate 24 is provided on the unloading cylinder 2, which surrounds the unloading port. In this embodiment, the opening of the guide plate 24 faces downward, and a shielding part is provided on the rear side of the guide plate 24, which can prevent the grain flowing out of the unloading port from spraying backward and leaking out of the receiving vehicle.

[0032] This utility model also proposes a combine harvester, which includes the unloading height adjustment device as described above. The specific structure of the unloading height adjustment device is as described in the above embodiments. Since the combine harvester adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0033] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] 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.

[0036] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A grain unloading height adjustment device, characterized in that, The unloading height adjustment device includes: The grain bin (1) is provided with a fixing frame (11) having at least two adjustment holes (111), each of which has a different height; The unloading hopper (2) has one end connected to the grain tank (1) and can rotate relative to the grain tank (1), and the other end is provided with an unloading port; The telescopic drive (3) has an installation end that is detachably connected to the adjustment hole (111) at any height, and an output end that is connected to the unloading cylinder (2). The telescopic drive (3) is used to drive the unloading cylinder (2) to rotate relative to the grain box (1) in the vertical plane.

2. The grain unloading height adjustment device according to claim 1, characterized in that, The fixing frame (11) is located on the rear side of the grain box (1), and the fixing frame (11) extends from front to back. The adjustment holes (111) are arranged sequentially along the length direction of the fixing frame (11).

3. The grain unloading height adjustment device according to claim 2, characterized in that, The height of the adjustment hole (111) gradually decreases from front to back.

4. The grain unloading height adjusting device according to any one of claims 1 to 3, characterized in that, An avoidance groove (112) is provided between any two adjacent adjustment holes (111) to avoid the telescopic drive member (3).

5. The grain unloading height adjusting device according to any one of claims 1 to 3, characterized in that, The fixing frame (11) is detachably connected to the grain box (1) through the mounting hole (115), and an avoidance notch (113) is provided between the mounting hole (115) and the adjustment hole (111).

6. The grain unloading height adjusting device according to any one of claims 1 to 3, characterized in that, The unloading height adjustment device also includes an unloading bend (13) disposed on the grain tank (1). The unloading cylinder (2) includes a horizontal part (21) and a bend (22). One end of the bend (22) is connected to the horizontal part (21), and the other end is rotatably connected to the unloading bend (13). The fixing frame (11) is disposed on the unloading bend (13). The output end of the telescopic drive (3) is connected to the horizontal part (21).

7. The grain unloading height adjustment device according to claim 6, characterized in that, The unloading bend (13) and the grain box (1) are detachably connected, and the bend section (22) and the horizontal section (21) are detachably connected.

8. The grain unloading height adjusting device according to any one of claims 1 to 3, characterized in that, The grain bin (1) is provided with an installation plate (12), and the fixing frame (11) includes fixing plates (114) on both sides of the installation plate (12). Both fixing plates (114) are connected to the installation plate (12), and each fixing plate (114) is provided with at least two adjustment holes (111), and the adjustment holes (111) on the two fixing plates (114) are aligned.

9. The grain unloading height adjustment device according to any one of claims 1 to 3, characterized in that, The outer wall of the unloading drum (2) is provided with a mounting bracket (23) that is connected to the telescopic drive component (3). and / or; A guide plate (24) is provided on the unloading cylinder (2), and the guide plate (24) surrounds the unloading port.

10. A combine harvester, characterized in that, The combine harvester includes the unloading height adjustment device as described in any one of claims 1 to 9.

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