Independent adjustment of lifting and stilling mechanism and harvester

Abstract

The utility model discloses an independent adjustment lifting's still field mechanism and harvester, and is connected with left branch arm and right branch arm respectively on the pulverizer frame of still field machine both sides, and the last end of left branch arm and right branch arm all articulate with the rack front crossbeam of harvester, and still field machine both sides are arranged with left oil cylinder and right oil cylinder respectively, and left oil cylinder articulate with rack front crossbeam and left branch arm, and right oil cylinder articulate with rack front crossbeam and right branch arm. Left oil cylinder and right oil cylinder are connected with control operating device through hydraulic oil circuit respectively, and realize the telescopic movement of oil cylinder through the input and discharge of hydraulic oil. The utility model discloses a pair of hydraulic oil cylinder and realizes the independent lifting adjustment of still field machine, breaks through the technical limitation of traditional still field machine and cutting table rigid connection, can make still field machine independent of cutting table work to make it adapt to the still field demand of different height corn straw, greatly improves the work efficiency, and the structure is also more stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of agricultural harvesting machinery technology, and in particular to a field-returning mechanism and harvester for independent installation of the field-returning machine and the cutting platform. Background Technology

[0002] Straw mulching machines are key equipment in modern mechanized agricultural production, primarily used for crushing, spreading, and burying residual straw and stubble in the field after crop harvesting, thus returning straw to the field. In mechanized agricultural operations, straw mulching machines are usually used in conjunction with headers to achieve functions such as straw crushing and returning to the field or stubble treatment. However, traditional straw mulching machines are mostly connected to headers in a fixed structure, which prevents the machine from independently adjusting its height or angle, limiting its ability to adapt to different operating conditions. For example, when the field terrain is uneven or the crop stubble height is inconsistent, the fixed connection makes it difficult to flexibly adjust the straw returning depth, affecting the quality and efficiency of the operation. In addition, because the straw mulching machine is rigidly connected to the header, it may be damaged or have unstable power transmission when encountering heavy loads or obstacles, affecting the overall reliability of the machine. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a field-returning mechanism and harvester with independent adjustable lifting to improve operational flexibility and reliability.

[0004] To solve the above technical problems, according to one aspect of this utility model, an independently adjustable lifting and lowering field-returning structure is provided, including a field-returning machine. The field-returning machine includes crusher frames on both sides, with a left support arm and a right support arm connected to the crusher frames on both sides respectively. The ends of the left support arm and the right support arm are hinged to the front crossbeam of the harvester frame. A left hydraulic cylinder and a right hydraulic cylinder are arranged on both sides of the field-returning machine, with the left hydraulic cylinder hinged to the front crossbeam of the frame and the left support arm, and the right hydraulic cylinder hinged to the front crossbeam of the frame and the right support arm.

[0005] Furthermore, a cylinder seat plate is fixedly installed in the middle of both the left and right support arms, and the piston rod ends of the left and right cylinders are hinged to the cylinder seat plate.

[0006] Furthermore, the left and right oil cylinders are respectively connected to the control and operating device through hydraulic oil circuits, and the extension and retraction movement of the oil cylinders is realized by the input and discharge of hydraulic oil.

[0007] According to another aspect of this utility model, a harvester is provided, including the above-described independently adjustable lifting and lowering field-returning structure.

[0008] Furthermore, the harvester includes a cutting platform mounted on the front crossbeam of the harvester's frame, and the independently adjustable lifting and lowering field-returning structure is installed independently of the cutting platform.

[0009] This invention enables the independent lifting and lowering adjustment of the stalk return machine through a pair of hydraulic cylinders, breaking through the technical limitations of the traditional rigid connection between the stalk return machine and the header. It allows the stalk return machine to work independently of the header, thus adapting to the needs of returning corn stalks to the field at different heights, greatly improving work efficiency, and making the structure more stable and reliable. Attached Figure Description

[0010] The accompanying drawings are provided to further illustrate the present invention and form part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention.

[0011] Figure 1 This is a schematic diagram of the structure of the returning-to-field mechanism of this utility model; Figure 2 yes Figure 1 AA section view; Figure 3 and Figure 4 These are installation diagrams for the left and right hydraulic cylinders, respectively.

[0012] In the diagram, 1-crusher frame, 2-left support arm, 3-right support arm, 4-front crossbeam of frame, 5-left hydraulic cylinder, 6-right hydraulic cylinder, 7-hydraulic cylinder seat plate, 8-cutter shaft, 9-sprocket, 10-tensioning sprocket, 11-long hydraulic cylinder pin, 12-cutting table hydraulic cylinder. Detailed Implementation

[0013] To enable those skilled in the art to better understand this utility model, the present utility model will be further described clearly and completely below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0014] The basic concept of this embodiment is to add two more hydraulic cylinders below the header cylinder 12 of the existing harvester. These two hydraulic cylinders connect the harvester frame and the reaper, so that the reaper and the header are opposite each other and can be adjusted up and down.

[0015] Based on this, a typical embodiment of the present invention provides an independently adjustable lifting and lowering field-returning structure, including a field-returning machine. The field-returning machine includes crusher frames 1 on both sides, with a left support arm 2 and a right support arm 3 connected to the crusher frames 1 on both sides respectively. The ends of the left support arm 2 and the right support arm 3 are both hinged to the front crossbeam 4 of the harvester frame. A left hydraulic cylinder 5 and a right hydraulic cylinder 6 are arranged on both sides of the field-returning machine. The two ends of the left hydraulic cylinder 5 are hinged to the front crossbeam 4 of the frame and the left support arm 2 respectively, and the two ends of the right hydraulic cylinder 6 are hinged to the front crossbeam 4 of the frame and the right support arm 3 respectively. The field-returning machine is suspended below the frame of the harvester.

[0016] According to the above implementation method, by extending and retracting the left oil cylinder 5 and the right oil cylinder 6, the crusher connected to the left and right support arms can be adjusted up and down, thereby realizing that the reaming machine can adjust the up and down angle independently of the cutting table.

[0017] In a more specific implementation method, such as Figure 3 and Figure 4 As shown, both the left cylinder 5 and the right cylinder 6 consist of a cylinder body and a piston rod. A cylinder seat plate 7 is fixedly installed in the middle of both the left support arm 2 and the right support arm 3, and the piston rod ends of the left cylinder 5 and the right cylinder 6 are hinged to the cylinder seat plate 7. Cylinder mounting seats are also provided on both sides of the front crossbeam 4 of the frame, and the cylinder bodies of the left cylinder 5 and the right cylinder 6 are hinged to the cylinder mounting seats via long cylinder pins 11. Each hinge point constitutes a fulcrum for the movement of the cylinders.

[0018] In a preferred embodiment, the left cylinder 5 and the right cylinder 6 are respectively connected to the control and operation device through hydraulic oil circuits. Through the control and operation device, the left and right cylinders are compressed or extracted by the hydraulic oil delivered through the hydraulic oil circuits to realize the extension and retraction of the cylinders, thereby enabling the trowel to adjust the angle up and down.

[0019] like Figure 1 and Figure 2 As shown, the cutter shaft 8 is installed between the crusher frames 1, and the crushing blades are installed on the cutter shaft 6. The transmission system, consisting of the cutter shaft 8, sprocket 9, tension sprocket 10, etc., is used to drive the crushing blades to rotate.

[0020] Another typical embodiment of this utility model provides a corn harvester, in which the independently adjustable lifting and lowering stalk-returning structure described in the above embodiments is installed on a self-propelled corn harvester. Furthermore, a header is also installed on the frame, and the independently adjustable lifting and lowering stalk-returning structure is installed independently of the header. When the header is raised, the stalk-returning machine can lower to different heights to meet the need for returning straw to the field at different heights below the ears of straw.

[0021] The scope of protection claimed by this utility model is not limited to the specific embodiments described above. For those skilled in the art, this utility model can have various modifications and alterations. Any modifications, improvements and equivalent substitutions made within the concept and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A field-returning mechanism with independently adjustable lifting, comprising a field-returning machine, characterized in that: The reamer includes crusher frames on both sides, with a left support arm and a right support arm connected to the crusher frames respectively. The ends of the left and right support arms are hinged to the front crossbeam of the harvester frame. A left hydraulic cylinder and a right hydraulic cylinder are arranged on both sides of the reamer. The left hydraulic cylinder is hinged to the front crossbeam of the frame and the left support arm, and the right hydraulic cylinder is hinged to the front crossbeam of the frame and the right support arm.

2. The independently adjustable lifting and lowering field-returning mechanism according to claim 1, characterized in that: A cylinder seat plate is fixedly installed in the middle of both the left and right support arms, and the piston rod ends of the left and right cylinders are hinged to the cylinder seat plate.

3. The independently adjustable lifting and lowering field-returning mechanism according to claim 1 or 2, characterized in that: The left and right oil cylinders are connected to the control and operating device through hydraulic oil circuits, and the extension and retraction of the oil cylinders are realized by the input and discharge of hydraulic oil.

4. A harvester, characterized in that: Includes the independently adjustable lifting and lowering field-returning mechanism as described in any one of claims 1-3.

5. The harvester according to claim 4, characterized in that: The harvester includes a cutting platform mounted on the front crossbeam of the harvester frame, and the independently adjustable lifting and lowering field-returning structure is installed independently of the cutting platform.

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