A corn harvester header height automatic adjusting device

Abstract

The utility model relates to the corn harvester header field, and specifically is a kind of corn harvester header height automatic regulating device, including harvester body, the one side of harvester body is fixedly connected with drive box, the one side swing mounting of drive box has header body, the one side of harvester body is provided with adjusting mechanism;In the utility model, the ultrasonic sensor electrically connected with drive box can emit ultrasonic wave or radar wave to ground, and receive echo, the time of beam round trip is calculated by PLC control system etc., to accurately measure the distance from header body to ground and then transmit to drive box to adjust the height of header body, solve the traditional most header needs staff to carry out real-time manual adjustment to header height according to the height difference of corn on ground at any time, the level of control automation is lower, easily cause inaccurate height adjustment, can lead to field lodging crop missed cutting etc.

Description

Technical Field

[0001] This utility model relates to the field of corn harvester headers, specifically an automatic height adjustment device for corn harvester headers. Background Technology

[0002] Corn harvesters use mechanical devices to cut corn stalks, pick ears, peel, thresh, and process straw. The header is mainly responsible for cutting and harvesting the crop. Different heights of corn plants require different stubble heights, so the harvesting height of the header has a great influence on the stubble height of the corn plant group.

[0003] However, most traditional headers require workers to manually adjust their height in real time according to the different heights of the corn on the ground. This adjustment method is basically done by manually checking the position of the stalks above the ground and operating the machinery. The level of automation is low, which can easily lead to inaccurate height adjustment. This can result in missed harvesting of lodged crops, insufficient stubble height, and excessive harvesting process or feeding, which can clog the auger and cause harvest losses. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, most traditional headers require operators to manually adjust their height in real time based on the varying height of the corn on the ground. This adjustment method is essentially done by manually checking the position of the stalks above the ground and operating the machinery, resulting in a low level of automation and inaccurate height adjustments. This can lead to problems such as missed harvesting of lodged crops, insufficient stubble height, and excessive feeding, which can clog the auger and cause harvesting losses. This utility model proposes an automatic header height adjustment device for corn harvesters.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an automatic adjustment device for the height of the header of a corn harvester, including a harvester body, a drive box fixedly connected to one side of the harvester body, a header body movably installed on one side of the drive box, and an adjustment mechanism provided on one side of the harvester body. The adjustment mechanism includes a bracket, one side of which is fixedly connected to one side of the harvester body. A first connecting seat is fixedly connected to one side of the bracket. An adjusting rod is rotatably connected to the inner cavity of the first connecting seat. A protective shell is rotatably connected to the inner cavity of the adjusting rod. An ultrasonic sensor is fixedly installed in the inner cavity of the protective shell. The ultrasonic sensor is electrically connected to the drive box.

[0006] Preferably, a first motor is fixedly installed on one side of the bracket, and a threaded rod is fixedly connected to the output end of the first motor, the threaded rod being rotatably connected to the inner cavity of the bracket.

[0007] Preferably, a second connecting seat is fixedly connected to one side of the adjusting rod, a connecting rod is rotatably connected to the inner cavity of the second connecting seat, a transmission block is rotatably connected to one end of the connecting rod, and the inner cavity of the transmission block is threadedly connected to the surface of the threaded rod.

[0008] Preferably, one end of the threaded rod is fixedly connected to a limiting plate, and one side of the limiting plate is in contact with one side of the transmission block.

[0009] Preferably, a second motor is fixedly installed on one side of the adjusting rod, and the output end of the second motor is fixedly connected to one side of the protective shell.

[0010] Preferably, a third connecting seat is fixedly connected to one side of the protective shell, and a sealing plate is rotatably connected to the inner cavity of the third connecting seat, with one side of the sealing plate fitting against one side of the protective shell.

[0011] Preferably, a third motor is fixedly installed on one side of the third connecting seat, and the output end of the third motor is fixedly connected to one side of the sealing plate.

[0012] The advantages of this utility model are: This invention utilizes a threaded rod and a transmission block. A first motor drives the threaded rod to rotate along the inner cavity of the support. Since the inner cavity of the transmission block is threadedly connected to the surface of the threaded rod, the rotation of the threaded rod simultaneously raises and lowers the transmission block. This movement pulls or pushes a connecting rod, which in turn pulls or pushes an adjusting rod to rotate along the first connecting seat, thereby adjusting the angle of the ultrasonic sensor. The ultrasonic sensor, electrically connected to the drive box, emits ultrasonic or radar waves to the ground and receives echoes. A PLC or other control system calculates the round-trip time of the beam to accurately measure the distance from the cutter head to the ground and transmits this data to the drive box to adjust the height of the cutter head. This solves the problem that most traditional cutters require manual adjustment in real-time based on the corn's height on the ground. This adjustment method relies heavily on manual observation of the straw's distance from the ground and mechanical operation, resulting in low automation and inaccurate height adjustments. Such inaccuracies can lead to missed harvesting of lodged crops, insufficient stubble height, and clogging of the auger due to excessive feeding or other factors, resulting in harvest losses. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a first three-dimensional schematic diagram of the overall device of this utility model; Figure 2 This is a second perspective view of the overall device of this utility model; Figure 3 This is a three-dimensional schematic diagram of the adjustment mechanism of this utility model; Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0015] In the diagram: 1. Harvester body; 2. Drive box; 3. Header body; 4. Adjustment mechanism; 401. Bracket; 402. First connecting seat; 403. Adjusting rod; 404. Protective shell; 405. First motor; 406. Second motor; 407. Threaded rod; 4071. Limiting plate; 408. Second connecting seat; 409. Connecting rod; 410. Transmission block; 411. Third connecting seat; 412. Sealing plate; 413. Third motor; 5. Ultrasonic sensor. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0017] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail. This application discloses an automatic height adjustment device for the header of a corn harvester. (Refer to...) Figures 1 to 4 An automatic height adjustment device for the header of a corn harvester includes a harvester body 1, a drive box 2 fixedly connected to one side of the harvester body 1, a header body 3 movably installed on one side of the drive box 2, and an adjustment mechanism 4 provided on one side of the harvester body 1. The adjustment mechanism 4 includes a bracket 401. One side of the bracket 401 is fixedly connected to one side of the harvester body 1. A first connecting seat 402 is fixedly connected to one side of the bracket 401. An adjusting rod 403 is rotatably connected to the inner cavity of the first connecting seat 402. A protective shell 404 is rotatably connected to the inner cavity of the adjusting rod 403. An ultrasonic sensor 5 is fixedly installed in the inner cavity of the protective shell 404. The ultrasonic sensor 5 is electrically connected to the drive box 2. A first motor 405 is fixedly installed on one side of the bracket 401. A threaded rod 407 is fixedly connected to the output end of the first motor 405. The threaded rod 407 is rotatably connected to the inner cavity of the bracket 401. A second connecting seat 408 is fixedly connected to one side of the adjusting rod 403. A connecting rod 409 is rotatably connected to the inner cavity of the second connecting seat 408. A transmission block 410 is rotatably connected to one end of the connecting rod 409. The inner cavity of the transmission block 410 is threadedly connected to the surface of the threaded rod 407. The drive box in this automatic height adjustment device for the corn harvester header... The height of the cutter body 3 can be adjusted by the drive box 2. The ultrasonic sensor 5, which is electrically connected to the drive box 2, can emit ultrasonic waves or radar waves to the ground and receive the echo. The control system such as PLC calculates the round-trip time of the beam to accurately measure the distance from the cutter body 3 to the ground and transmits it to the drive box 2 to adjust the height of the cutter body 3. The adjustment mechanism 4 supports the ultrasonic sensor 5 and flexibly adjusts the detection angle. Through the threaded rod 407 and the transmission block 410, the first motor 405 can drive the threaded rod 407 to rotate along the inner cavity of the bracket 401. Since the inner cavity of the transmission block 410 is threadedly connected to the surface of the threaded rod 407, the rotation of the threaded rod 407 can drive the transmission block 410 to rise and fall. When the transmission block 410 rises and falls, it can pull or push the connecting rod 409. The other end of the connecting rod 409 pulls or pushes the adjusting rod 403 to rotate along the first connecting seat 402, thereby adjusting the angle of the ultrasonic sensor 5.

[0018] Reference Figure 3 One end of the threaded rod 407 is fixedly connected to a limiting plate 4071. One side of the limiting plate 4071 is in contact with one side of the transmission block 410. Through the setting of the limiting plate 4071, the limiting plate 4071 can limit the lowest position of the transmission block 410, and try to prevent the adjusting rod 403 from separating from the threaded rod 407.

[0019] Reference Figure 3 A second motor 406 is fixedly installed on one side of the adjusting rod 403. The output end of the second motor 406 is fixedly connected to one side of the protective shell 404. Through the second motor 406, the second motor 406 can drive the protective shell 404 to rotate. Therefore, the protective shell 404 can drive the ultrasonic sensor 5 to rotate and adjust.

[0020] Reference Figure 3 and Figure 4A third connecting seat 411 is fixedly connected to one side of the protective shell 404. A sealing plate 412 is rotatably connected to the inner cavity of the third connecting seat 411. One side of the sealing plate 412 is in contact with one side of the protective shell 404. A third motor 413 is fixedly installed on one side of the third connecting seat 411. The output end of the third motor 413 is fixedly connected to one side of the sealing plate 412. Through the sealing plate 412, the third motor 413 can drive the sealing plate 412 to rotate along the third connecting seat 411. The sealing plate 412 can seal the port of the protective shell 404, so as to avoid damage to the ultrasonic sensor 5 when it is not in use.

[0021] Working principle: The drive box 2 can drive the cutting table body 3 to adjust its height. The ultrasonic sensor 5, which is electrically connected to the drive box 2, can emit ultrasonic waves or radar waves to the ground and receive the echo. The PLC and other control systems calculate the round-trip time of the beam to accurately measure the distance from the cutting table body 3 to the ground and transmit it to the drive box 2 to adjust the height of the cutting table body 3. The adjustment mechanism 4 supports the ultrasonic sensor 5 and flexibly adjusts the detection angle. Through the threaded rod 407 and the transmission block 410, the first motor 405 can drive the threaded rod 407 to rotate along the inner cavity of the bracket 401. Because the inner cavity of the transmission block 410 and the surface thread of the threaded rod 407 are connected... The connection is such that when the threaded rod 407 rotates, it drives the transmission block 410 to rise and fall. When the transmission block 410 rises and falls, it pulls or pushes the connecting rod 409. The other end of the connecting rod 409 pulls or pushes the adjusting rod 403 to rotate along the first connecting seat 402, thereby adjusting the angle of the ultrasonic sensor 5. The second motor 406 can drive the protective shell 404 to rotate, so the protective shell 404 can drive the ultrasonic sensor 5 to rotate and adjust. The third motor 413 can drive the sealing plate 412 to rotate along the third connecting seat 411. The sealing plate 412 can seal the port of the protective shell 404 to minimize damage to the ultrasonic sensor 5 when it is not in use.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An automatic height adjustment device for the header of a corn harvester, comprising the harvester body (1), characterized in that: A drive box (2) is fixedly connected to one side of the harvester body (1), a header body (3) is movably installed on one side of the drive box (2), and an adjustment mechanism (4) is provided on one side of the harvester body (1). The adjustment mechanism (4) includes a bracket (401), one side of which is fixedly connected to one side of the harvester body (1). A first connecting seat (402) is fixedly connected to one side of the bracket (401). An adjustment rod (403) is rotatably connected to the inner cavity of the first connecting seat (402). A protective shell (404) is rotatably connected to the inner cavity of the adjustment rod (403). An ultrasonic sensor (5) is fixedly installed in the inner cavity of the protective shell (404). The ultrasonic sensor (5) is electrically connected to the drive box (2).

2. The automatic height adjustment device for the header of a corn harvester according to claim 1, characterized in that: A first motor (405) is fixedly installed on one side of the bracket (401), and a threaded rod (407) is fixedly connected to the output end of the first motor (405). The threaded rod (407) is rotatably connected to the inner cavity of the bracket (401).

3. The automatic height adjustment device for the header of a corn harvester according to claim 2, characterized in that: A second connecting seat (408) is fixedly connected to one side of the adjusting rod (403). A connecting rod (409) is rotatably connected to the inner cavity of the second connecting seat (408). A transmission block (410) is rotatably connected to one end of the connecting rod (409). The inner cavity of the transmission block (410) is threadedly connected to the surface of the threaded rod (407).

4. The automatic height adjustment device for the header of a corn harvester according to claim 3, characterized in that: One end of the threaded rod (407) is fixedly connected to a limiting plate (4071), and one side of the limiting plate (4071) is in contact with one side of the transmission block (410).

5. The automatic height adjustment device for the header of a corn harvester according to claim 1, characterized in that: A second motor (406) is fixedly installed on one side of the adjusting rod (403), and the output end of the second motor (406) is fixedly connected to one side of the protective shell (404).

6. The automatic height adjustment device for the header of a corn harvester according to claim 1, characterized in that: A third connecting seat (411) is fixedly connected to one side of the protective shell (404), and a sealing plate (412) is rotatably connected to the inner cavity of the third connecting seat (411). One side of the sealing plate (412) is in contact with one side of the protective shell (404).

7. The automatic height adjustment device for the header of a corn harvester according to claim 6, characterized in that: A third motor (413) is fixedly installed on one side of the third connecting seat (411), and the output end of the third motor (413) is fixedly connected to one side of the sealing plate (412).

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