Header height adjusting mechanism of crop harvester

Abstract

The utility model provides a crop harvester header height adjusting mechanism, which relates to the field of harvester headers, and comprises a height adjusting cylinder, a harvester header body and a header frame, the height adjusting cylinder is connected with the header frame through an adjusting support, the side end of the header frame is connected with the harvester header body, and the harvester header body is connected with the header frame through an adjusting support. An adjusting screw rod is installed on the inner side of the height adjusting cylinder through an adjusting groove, an adjusting support is connected to the surface of the adjusting screw rod through a driving block, a motor is connected to the upper end of the adjusting screw rod through a shaft, an arc-shaped cover plate is welded to the upper surface of the adjusting support, and a dustproof plate is fixedly connected to the right side face of the height adjusting cylinder in a threaded mode; a dust blocking brush plate is installed on the arc face of the left side of the dustproof plate, and the inner side of the arc-shaped cover plate is connected with the dustproof plate in an inserted mode through a contraction groove. The utility model solves the problem of poor header height adjustment efficiency caused by slow operation due to the influence of environment temperature during telescopic adjustment of the oil cylinder in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of harvester headers, in particular to a height adjustment mechanism for a crop harvester header. Background Art

[0002] In large-scale crop planting, crops can be quickly harvested by harvesters. After searching, the existing technology (Announcement No.: CN201721889097.1) harvester stubble height adjustment mechanism records that "when working in the same work site, the operator adjusts the distance between the cylinder body and the cutting table by adjusting the first bolt, and then controls the extension and retraction stroke of the oil cylinder to adjust the minimum clearance of the cutting table from the ground and adjust the stubble height. Before going to the field, the first bolt is adjusted to calibrate the stubble height. When harvesting to the end of the field, the cutting table is lowered to the bottom and is always at the height when going to the field. This saves the time of repeatedly calibrating the clearance between the cutting table and the ground, can easily adjust the height of the cutting table, and avoids a series of problems such as the cutting table shoveling soil and clogging, thereby greatly improving the working efficiency." However, the existing technology has the problem that the extension and retraction adjustment of the oil cylinder is easily affected by the ambient temperature and operates slowly, resulting in poor efficiency in adjusting the height of the cutting table. Utility Model Content

[0003] In order to overcome the defects of the existing technology, a crop harvester header height adjustment mechanism is now provided to solve the problem in the existing technology that the oil cylinder telescopic adjustment is easily affected by the ambient temperature and operates slowly, resulting in poor header height adjustment efficiency.

[0004] To achieve the above purpose, a crop harvester header height adjustment mechanism is provided, comprising: a height adjustment cylinder, a harvester header body and a header frame, wherein the height adjustment cylinder is connected to the header frame through an adjustment bracket, and the side end of the header frame is connected to the harvester header body.

[0005] An adjusting screw is installed on the inner side of the height adjustment cylinder through an adjusting groove, the surface of the adjusting screw is connected to an adjusting bracket through a driving block, the upper end shaft of the adjusting screw is connected to a motor, an arc-shaped cover plate is welded on the upper surface of the adjusting bracket, a dust-proof plate is screwed and fixed on the right side of the height adjustment cylinder, a dust-proof brush plate is installed on the arc surface of the left side of the dust-proof plate, and the inner side of the arc-shaped cover plate is connected to the dust-proof plate through a contraction groove.

[0006] Furthermore, the front and rear sides of the header frame are fixed with adjustment brackets by fastening bolts; and the adjustment brackets are symmetrically L-shaped and connected to the height adjustment barrel groove.

[0007] Furthermore, connecting plates are welded to the front and rear outer surfaces of the height adjustment cylinder; and the height adjustment cylinder is installed and fixed to the harvester body through the connecting plates.

[0008] Furthermore, a distance sensor is installed on the left side of the height adjustment cylinder, heat dissipation mesh ports are installed on the upper and lower end surfaces of the connecting plate, and a motor is embedded and fixed on the upper end of the height adjustment cylinder.

[0009] Furthermore, a driving block is embedded and fixed inside the adjusting bracket, and the right side of the adjusting bracket is fitted with the right groove surface of the height adjusting cylinder through an arc-shaped cover plate.

[0010] Furthermore, an arc-shaped contraction groove is provided on the inner side of the arc-shaped cover plate; and the dust-proof plate and the dust-blocking brush plate are both inserted into the contraction groove.

[0011] Furthermore, the height adjustment cylinder, the adjustment screw, the motor, the adjustment bracket, the arc-shaped cover plate, the drive block and the dustproof plate constitute a dustproof height adjustment mechanism of the harvester header body.

[0012] The beneficial effect of the present invention is that the height adjustment mechanism of the cutting table of the crop harvester of the present invention utilizes the adjusting screw in the height adjustment cylinder to drive the adjusting brackets on both sides of the cutting table frame to move up and down, and adjust the height of the height adjustment cylinder. During the adjustment movement, the arc-shaped cover plate on the upper end face of the adjusting bracket and the dust-proof plate inserted in the groove are blocked at the groove surface of the height adjustment cylinder, which is convenient for blocking the entry of debris and dust cut by the harvester, avoiding the debris and dust from affecting the smoothness of the adjustment of the height adjustment mechanism, and facilitating the height adjustment mechanism to more efficiently and accurately adjust the height of the harvester cutting table, thereby improving the smooth operation effect of the height adjustment mechanism of the harvester cutting table. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view structural schematic diagram of a crop harvester header height adjustment mechanism according to an embodiment of the present utility model.

[0014] Figure 2 This is a front view cross-sectional connection structure schematic diagram of the header height adjustment mechanism according to an embodiment of the present utility model.

[0015] Figure 3 It is a schematic diagram of a top view of a partial cross-section of the header height adjustment mechanism according to an embodiment of the present utility model.

[0016] Figure 4 This is a schematic diagram of the three-dimensional structure of the adjustment bracket according to an embodiment of the present utility model.

[0017] In the figure: 1. Height adjustment cylinder; 11. Connecting plate; 12. Motor; 13. Distance sensor; 14. Adjusting screw; 15. Adjusting slot; 16. Heat dissipation mesh port; 2. Adjusting bracket; 21. Arc cover plate; 22. Fastening bolt; 23. Drive block; 24. Retraction slot; 3. Harvester header body; 31. Heading frame; 4. Dustproof plate; 41. Dust-blocking brush plate. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 4 As shown, the utility model provides a height adjustment mechanism for a harvester header, comprising: a height adjustment cylinder 1, a harvester header body 3 and a header frame 31. The height adjustment cylinder 1 is connected to the header frame 31 through an adjustment bracket 2. The side end of the header frame 31 is connected to the harvester header body 3.

[0019] An adjusting screw 14 is installed on the inner side of the height adjustment cylinder 1 through the adjusting groove 15. The surface of the adjusting screw 14 is connected to the adjusting bracket 2 through the driving block 23. The upper end of the adjusting screw 14 is axially connected to the motor 12. An arc-shaped cover plate 21 is welded on the upper surface of the adjusting bracket 2. A dust-proof plate 4 is screwed and fixed on the right side of the height adjustment cylinder 1. A dust-proof brush plate 41 is installed on the arc surface of the left side of the dust-proof plate 4. The inner side of the arc-shaped cover plate 21 is connected to the dust-proof plate 4 through the contraction groove 24.

[0020] When the height of the harvester's header body 3 needs to be adjusted, the control motor 12 drives the adjusting screw 14 in the height adjustment cylinder 1 to rotate, and the adjusting bracket 2 is moved up and down to drive the header frame 31 of the harvester's header body 3 to move up and down until it is adjusted to a suitable height. During this movement, the arc cover plate 21 and the dustproof plate 4 are always blocked at the groove surface of the height adjustment cylinder 1, thereby preventing the entry of cutting debris and dust.

[0021] In this embodiment, the adjustment brackets 2 are fixed to the front and rear sides of the header frame 31 via fastening bolts 22. The adjustment brackets 2 are symmetrically L-shaped and extend through the slots in the height adjustment cylinder 1. Connector plates 11 are welded to the front and rear exterior surfaces of the height adjustment cylinder 1, securing the cylinder 1 to the harvester body via these plates. A distance sensor 13 is mounted on the left side of the height adjustment cylinder 1. Heat dissipation grilles 16 are installed at the upper and lower ends of the connector plate 11. A motor 12 is embedded and secured to the upper end of the height adjustment cylinder 1.

[0022] In a preferred embodiment, the motor 12 rotates the adjustment screw 14, causing the drive block 23 to convert the rotational motion of the adjustment screw 14 into linear motion, thereby driving the adjustment bracket 2 to move up and down, thereby achieving the effect of adjusting the height of the harvester header body 3. The distance sensor 13 facilitates detecting the upward movement value of the harvester header body 3 and facilitating the determination of the distance between the harvester header body 3 and the ground.

[0023] In this embodiment, a drive block 23 is embedded and fixed inside the adjustment bracket 2. The right side of the adjustment bracket 2 is aligned with the right groove surface of the height adjustment cylinder 1 via a curved cover plate 21. An arc-shaped contraction groove 24 is defined inside the curved cover plate 21; both the dustproof plate 4 and the dust-blocking brush plate 41 are inserted into the contraction groove 24.

[0024] As a preferred embodiment, the driving block 23 is convenient for driving the adjusting bracket 2 to move up and down in the groove of the height adjustment cylinder 1. When the adjusting bracket 2 moves up, the arc cover plate 21 moves up together with the adjusting bracket 2. At this time, the dustproof plate 4 is separated from the contraction groove 24 of the arc cover plate 21, and the dust-proof brush plate 41 on the side of the dustproof plate 4 is used to prevent external dust and debris from entering the groove of the height adjustment cylinder 1.

[0025] In this embodiment, the height adjustment cylinder 1, the adjustment screw 14, the motor 12, the adjustment bracket 2, the arc cover plate 21, the drive block 23 and the dustproof plate 4 constitute a dustproof height adjustment mechanism of the harvester header body 3.

[0026] As a preferred embodiment, the dust-proof height adjustment mechanism of the harvester header body 3 is convenient for blocking the entry of debris and dust cut by the harvester, preventing the debris and dust from affecting the smoothness of the adjustment of the height adjustment mechanism, and facilitating the height adjustment mechanism to more efficiently and accurately adjust the height of the harvester header, thereby improving the smooth operation effect of the harvester header height adjustment mechanism.

[0027] The cutting table height adjustment mechanism of the crop harvester of the present invention can effectively solve the problem in the prior art that the oil cylinder is easily affected by the ambient temperature during telescopic adjustment and runs slowly, resulting in poor cutting table height adjustment efficiency. It is convenient to block the entry of debris and dust cut by the harvester, and avoid the debris and dust from affecting the smoothness of adjustment of the height adjustment mechanism. It is convenient for the height adjustment mechanism to adjust the height of the harvester cutting table more efficiently and accurately, and improve the smooth operation effect of the harvester cutting table height adjustment mechanism. It is suitable for the cutting table height adjustment mechanism of the crop harvester.

Claims

1. A crop harvester header height adjustment mechanism, comprising: A height adjustment cylinder (1) is connected to a header frame (31) via an adjustment bracket (2), and a side end of the header frame (31) is connected to a harvester header body (3), characterized in that: An adjusting screw (14) is installed on the inner side of the height adjustment cylinder (1) through an adjusting groove (15); the surface of the adjusting screw (14) is connected to an adjusting bracket (2) through a driving block (23); the upper end of the adjusting screw (14) is axially connected to a motor (12); an arc-shaped cover plate (21) is welded to the upper surface of the adjusting bracket (2); a dustproof plate (4) is screwed and fixed on the right side of the height adjustment cylinder (1); a dust-blocking brush plate (41) is installed on the arc surface of the left side of the dustproof plate (4); and the inner side of the arc-shaped cover plate (21) is plugged into the dustproof plate (4) through a contraction groove (24).

2. The crop harvester header height adjustment mechanism according to claim 1, characterized in that: The front and rear sides of the cutting platform frame (31) are fixedly mounted with an adjustment bracket (2) via fastening bolts (22); and the adjustment bracket (2) is symmetrically L-shaped and connected to the groove of the height adjustment cylinder (1).

3. The crop harvester header height adjustment mechanism according to claim 1, characterized in that: Connecting plates (11) are welded to the front and rear outer surfaces of the height adjustment cylinder (1); and the height adjustment cylinder (1) is mounted and fixed to the harvester body via the connecting plates (11).

4. The crop harvester header height adjustment mechanism according to claim 3, characterized in that: A distance sensor (13) is installed on the left side of the height adjustment cylinder (1), heat dissipation mesh ports (16) are installed at the upper and lower end surfaces of the connecting plate (11), and a motor (12) is embedded and fixed at the upper end of the height adjustment cylinder (1).

5. The crop harvester header height adjustment mechanism according to claim 1, characterized in that: A driving block (23) is embedded and fixed inside the adjusting bracket (2), and the right side of the adjusting bracket (2) is fitted with the right groove surface of the height adjusting cylinder (1) via an arc-shaped cover plate (21).

6. The crop harvester header height adjustment mechanism according to claim 1, characterized in that: An arc-shaped contraction groove (24) is provided on the inner side of the arc-shaped cover plate (21); and the dustproof plate (4) and the dust-blocking brush plate (41) are both plugged into the contraction groove (24).

7. The crop harvester header height adjustment mechanism according to claim 1, characterized in that: The height adjustment cylinder (1), the adjustment screw (14), the motor (12), the adjustment bracket (2), the arc-shaped cover plate (21), the drive block (23) and the dustproof plate (4) constitute a dustproof height adjustment mechanism of a harvester header body (3).

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