阅读说明：本技术 一种联合收获机割茬高度检测装置 (Combine harvester cuts high detection device of stubble ) 是由 印祥 王艳鑫 安家豪 金诚谦 杜娟 耿端阳 李志合 于 2020-08-20 设计创作，主要内容包括：本发明公开一种联合收获机割茬高度检测装置,包括仿形托板、旋转轴、传感器摆臂和角度传感器,仿形托板与旋转轴相连,仿形托板和旋转轴均位于联合收获机的割台底部,仿形托板能够与割茬相抵,仿形托板与联合收获机的割台之间设置弹性件,弹性件处于被压缩状态,旋转轴可转动地与联合收获机的割台相连,旋转轴与传感器摆臂传动相连,旋转轴能够带动传感器转动,传感器摆臂与角度传感器相连,角度传感器能够检测传感器摆臂的转动角度。在联合收获机作业时,仿形托板与割茬相抵接,仿形托板随着割茬高度的变化进而带动旋转轴转动,旋转轴将角度变化通过传感器摆臂传递给角度传感器,可为后续对联合收获机的割台高度调节做准备。(The invention discloses a stubble height detection device of a combine harvester, which comprises a profiling supporting plate, a rotating shaft, a sensor swing arm and an angle sensor, wherein the profiling supporting plate is connected with the rotating shaft, the profiling supporting plate and the rotating shaft are both positioned at the bottom of a header of the combine harvester, the profiling supporting plate can be abutted against stubble, an elastic part is arranged between the profiling supporting plate and the header of the combine harvester, the elastic part is in a compressed state, the rotating shaft is rotatably connected with the header of the combine harvester, the rotating shaft is in transmission connection with the sensor swing arm, the rotating shaft can drive the sensor to rotate, the sensor swing arm is connected with the angle sensor, and the angle sensor can detect the rotation angle of the sensor swing. When the combine harvester works, the profiling supporting plate is abutted against the cut stubble, the profiling supporting plate drives the rotating shaft to rotate along with the change of the height of the cut stubble, the rotating shaft transmits the angle change to the angle sensor through the sensor swing arm, and preparation can be made for the subsequent height adjustment of the header of the combine harvester.)

1. The utility model provides a combine harvester cuts high detection device of stubble which characterized in that: including profile modeling layer board, rotation axis, sensor swing arm and angle sensor, the profile modeling layer board with the rotation axis links to each other, the profile modeling layer board with the rotation axis all is located combine's header bottom, the profile modeling layer board can offset with the cutting stubble, set up the elastic component between profile modeling layer board and combine's the header, the elastic component is in by compression state, the rotation axis rotationally links to each other with combine's header, the rotation axis with the transmission of sensor swing arm links to each other, the rotation axis can drive the sensor rotates, the sensor swing arm with angle sensor links to each other, angle sensor can detect the turned angle of sensor swing arm.

2. The stubble height detection device of a combine harvester according to claim 1, characterized in that: the rotating shaft is connected with the sensor swing arm through a fork, the rotating shaft is connected with the fork, the fork is provided with a sliding groove, one end, far away from the angle sensor, of the sensor swing arm is provided with a connecting column, and the connecting column is slidably arranged in the sliding groove.

3. The stubble height detection device of a combine harvester according to claim 2, characterized in that: the angle sensor is fixed on a header of the combine harvester by using a bracket with a shape of a Chinese character 'ji'.

4. The stubble height detection device of a combine harvester according to claim 1, characterized in that: the profile modeling layer board is dustpan column structure, the profile modeling layer board include the bottom plate and with backplate, two curb plates that the bottom plate links to each other, two the curb plate respectively with the both ends of backplate link to each other, the backplate the curb plate all with the bottom plate is mutually perpendicular, the bottom plate can offset with cutting the stubble, the header direction setting of combine is kept away from to the opening orientation of profile modeling layer board.

5. The stubble height detection device of a combine harvester according to claim 4, characterized in that: the back plate is provided with a supporting seat, and the supporting seat is connected with the rotating shaft.

6. A stubble height detection device of a combine harvester according to claim 5, characterized in that: the supporting seat is of a split structure and is detachably connected with the back plate.

7. The stubble height detection device of a combine harvester according to claim 1, characterized in that: the elastic piece is a hinge spring, the elastic piece is sleeved outside the rotating shaft, and the profiling supporting plate and a header of the combine harvester are respectively abutted against the elastic piece.

8. The stubble height detection device of a combine harvester according to claim 1, characterized in that: a cutting table of the combine harvester is provided with a linear bearing, and the rotating shaft penetrates through the linear bearing to be connected with the sensor swing arm in a transmission mode.

9. The stubble height detection device of a combine harvester according to any one of claims 1 to 8, wherein: the number of the angle sensors is two, the two angle sensors are respectively arranged at two ends of the rotating shaft, and the number of the sensor swing arms is consistent with that of the angle sensors and corresponds to the number of the angle sensors one to one.

10. The stubble height detection device of a combine harvester according to claim 1, characterized in that: the effective travel of the angle sensor is 60 °.

Technical Field

The invention relates to the technical field of agricultural machinery and peripheral supporting facilities thereof, in particular to a stubble cutting height detection device of a combined harvester.

Background

Along with the proposition and the continuous development of accurate agriculture and wisdom agriculture, the importance of agricultural machine unmanned, automatic in the agricultural machinery field is more and more outstanding, will improve the precision of farmland operation when alleviateing operation personnel intensity of labour. As an agricultural machine widely applied to the agricultural field, the combine harvester has the advantages that the height of the cut stubble is greatly fluctuated due to the fact that the traditional manual control header is lifted during operation, and the crop harvesting is adversely affected by the fact that the cut stubble is too high or too low.

Chinese patent publication No. CN102282963A discloses an intelligent stubble height detecting device, which adopts a pipe sleeve installed between a harvester body and a header and provided with a slide pipe and a package thereof and an internal reed switch array to output header height signals, so as to measure the stubble height of the harvester and prepare for subsequent processing and analysis of the signals. The device has high sensitivity and high measurement accuracy, but agricultural machinery can generate large mechanical vibration in the driving process, the mechanical vibration easily causes the damage of the sealing property to the reed pipe or the sensitivity is changed due to the generated mechanical pressure, and the service life and the measurement accuracy are reduced.

Therefore, how to change the current situation that the combine harvester cannot accurately measure the stubble height in the prior art becomes a problem to be solved by the technical personnel in the field.

Disclosure of Invention

The invention aims to provide a stubble height detection device of a combine harvester, which is used for solving the problems in the prior art, so that the combine harvester can accurately detect the stubble height and improve the data measurement accuracy.

In order to achieve the purpose, the invention provides the following scheme: the invention provides a stubble height detection device of a combine harvester, which comprises a profiling supporting plate, a rotating shaft, a sensor swing arm and an angle sensor, wherein the profiling supporting plate is connected with the rotating shaft, the profiling supporting plate and the rotating shaft are both positioned at the bottom of a header of the combine harvester, the profiling supporting plate can be abutted against cut stubbles, an elastic part is arranged between the profiling supporting plate and the header of the combine harvester and is in a compressed state, the rotating shaft is rotatably connected with the header of the combine harvester, the rotating shaft is in transmission connection with the sensor swing arm and can drive the sensor to rotate, the sensor swing arm is connected with the angle sensor, and the angle sensor can detect the rotation angle of the sensor swing arm.

Preferably, the rotating shaft is connected with the sensor swing arm through a fork, the rotating shaft is connected with the fork, the fork is provided with a sliding groove, one end, far away from the angle sensor, of the sensor swing arm is provided with a connecting column, and the connecting column is slidably arranged in the sliding groove.

Preferably, the angle sensor is fixed on a header of the combine harvester by using a bracket of a few types.

Preferably, the profile modeling layer board is dustpan column structure, the profile modeling layer board include the bottom plate and with backplate, two curb plates that the bottom plate links to each other, two the curb plate respectively with the both ends of backplate link to each other, the backplate the curb plate all with the bottom plate is mutually perpendicular, the bottom plate can offset with cutting the stubble, the opening orientation of profile modeling layer board sets up towards the header direction of keeping away from combine.

Preferably, a support seat is arranged on the back plate, and the support seat is connected with the rotating shaft.

Preferably, the supporting seat is of a split structure, and the supporting seat is detachably connected with the back plate.

Preferably, the elastic part is a hinge spring, the elastic part is sleeved outside the rotating shaft, and the profiling supporting plate and the cutting platform of the combine harvester are respectively abutted against the elastic part.

Preferably, a linear bearing is arranged on a header of the combine harvester, and the rotating shaft penetrates through the linear bearing to be in transmission connection with the sensor swing arm.

Preferably, the number of the angle sensors is two, the two angle sensors are respectively arranged at two ends of the rotating shaft, and the number of the sensor swing arms is consistent with that of the angle sensors and corresponds to the angle sensors one by one.

Preferably, the effective travel of the angle sensor is 60 °.

Compared with the prior art, the invention has the following technical effects: the invention discloses a stubble cutting height detection device of a combine harvester, which comprises a profiling supporting plate, a rotating shaft, a sensor swing arm and an angle sensor, wherein the profiling supporting plate is connected with the rotating shaft, the profiling supporting plate and the rotating shaft are both positioned at the bottom of a header of the combine harvester, the profiling supporting plate can be abutted against cut stubbles, an elastic piece is arranged between the profiling supporting plate and the header of the combine harvester and is in a compressed state, the rotating shaft is rotatably connected with the header of the combine harvester and is in transmission connection with the sensor swing arm, the rotating shaft can drive the sensor to rotate, the sensor swing arm is connected with the angle sensor, and the angle sensor can detect the rotation angle of the sensor swing. According to the stubble cutting height detection device of the combined harvester, when the combined harvester works, the profiling supporting plate is abutted against the stubble, the profiling supporting plate drives the rotating shaft to rotate along with the change of the stubble cutting height, and the rotating shaft transmits the angle change to the angle sensor through the sensor swing arm. The stubble cutting height detection device of the combine harvester is compact in structure and high in adaptability, and the elastic piece is arranged between the profiling supporting plate and the header of the combine harvester, so that an operator can complete measurement of the stubble cutting height in different operation environments and under large mechanical vibration, and preparation can be made for subsequent header height adjustment of the combine harvester.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic structural view of a stubble height detecting device of a combine harvester according to the present invention;

FIG. 2 is an enlarged schematic view of a part of the structure of the stubble height detecting device of the combine harvester of the present invention;

FIG. 3 is a schematic view of the stubble height detecting device of the combine harvester of the present invention;

wherein, 1 is a profiling supporting plate, 101 is a bottom plate, 102 is a back plate, 103 is a side plate, 2 is a rotating shaft, 3 is a sensor swing arm, 4 is an angle sensor, 5 is an elastic part, 6 is a fork frame, 7 is a sliding chute, 8 is a connecting column, 9 is a bracket with a shape of Chinese character 'ji', 10 is a supporting seat, 11 is a linear bearing, 12 is a cutting table of the combine harvester, and AC is the length (mm) of the center point of the rotating shaft from the angle sensor; AB is the length (mm) of the swing arm of the angle sensor; CD is the profile pallet height (mm); h is the height (mm) from the bottom of the profiling supporting plate to the cutting knife.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a stubble height detection device of a combine harvester, which is used for solving the problems in the prior art, so that the combine harvester can accurately detect the stubble height and improve the data measurement accuracy.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Referring to fig. 1-3, fig. 1 is a schematic structural diagram of a stubble height detection device of a combine harvester of the present invention, fig. 2 is an enlarged schematic structural diagram of a part of the stubble height detection device of the combine harvester of the present invention, and fig. 3 is a schematic structural diagram of the stubble height detection device of the combine harvester of the present invention.

The invention provides a stubble height detection device of a combine harvester, which comprises a profiling supporting plate 1, a rotating shaft 2, a sensor swing arm 3 and an angle sensor 4, wherein the profiling supporting plate 1 is connected with the rotating shaft 2, the profiling supporting plate 1 and the rotating shaft 2 are both positioned at the bottom of a cutting table 12 of the combine harvester, the profiling supporting plate 1 can be abutted against stubble, an elastic piece 5 is arranged between the profiling supporting plate 1 and the cutting table 12 of the combine harvester, the elastic piece 5 is in a compressed state, the rotating shaft 2 is rotatably connected with the cutting table 12 of the combine harvester, the rotating shaft 2 is in transmission connection with the sensor swing arm 3, the rotating shaft 2 can drive the sensor to rotate, the sensor swing arm 3 is connected with the angle sensor 4, and the angle sensor 4 can detect the rotation angle of the.

The invention relates to a stubble height detection device of a combine harvester, which is characterized in that a profiling supporting plate 1 is abutted against stubble when the combine harvester works, the profiling supporting plate 1 drives a rotating shaft 2 to rotate along with the change of the stubble height, and the rotating shaft 2 transmits the angle change to an angle sensor 4 through a sensor swing arm 3. The stubble cutting height detection device of the combine harvester is compact in structure and high in adaptability, the elastic piece 5 is arranged between the profiling supporting plate 1 and the cutting table 12 of the combine harvester, the stability of the device is improved, an operator can complete measurement of the stubble cutting height in different operating environments and under large mechanical vibration, and preparation can be made for subsequent height adjustment of the cutting table 12 of the combine harvester.

Specifically, the rotating shaft 2 is connected with the sensor swing arm 3 through the fork 6, the rotating shaft 2 is connected with the fork 6, the fork 6 is provided with a chute 7, one end of the sensor swing arm 3, which is far away from the angle sensor 4, is provided with a connecting column 8, and the connecting column 8 is slidably arranged in the chute 7. The rotating shaft 2, the fork frame 6 and the sensor swing arm 3 form a crank block structure, so that the rotating shaft 2 transmits angle change to the angle sensor 4, the structure is stable and reliable, and the accuracy of data measurement is further improved.

In the present embodiment, the angle sensor 4 is fixed on the header 12 of the combine harvester by using the bracket 9, and the bracket 9 provides a stable fixed support for the angle sensor 4 and does not affect the connection between the sensor swing arm 3 and the angle sensor 4.

Wherein, profile modeling layer board 1 is dustpan column structure, profile modeling layer board 1 includes bottom plate 101 and the backplate 102 that links to each other with bottom plate 101, two curb plates 103 link to each other with the both ends of backplate 102 respectively, be the U-shaped after two curb plates 103 and backplate 102 are connected, backplate 102, curb plate 103 all are mutually perpendicular with bottom plate 101, bottom plate 101 can offset with cutting the stubble, the opening orientation of profile modeling layer board 1 sets up towards 12 directions of header of keeping away from combine, the height of curb plate 103 is played by backplate 102 and is reduced gradually.

More specifically, a support 10 is provided on the back plate 102, the support 10 is connected to the rotating shaft 2, the profile modeling splint 1 is connected to the rotating shaft 2 by the support 10, and the rotating shaft 2 passes through the side plate 103 and is connected to the support 10.

In this embodiment, the supporting seat 10 is a split structure, and is easy to assemble and disassemble, and the supporting seat 10 is detachably connected to the back plate 102, so that the device can be cleaned and maintained conveniently.

In addition, elastic component 5 is the hinge spring, and elastic component 5 suit is in the outside of rotation axis 2, and profile modeling layer board 1, combine's header 12 respectively offset with elastic component 5, and elastic component 5 has improved the stability of device, avoids taking place to rock the dislocation scheduling problem in the device course of operation, improves the measuring result accuracy.

In other embodiments of the invention, a linear bearing 11 is arranged on a header 12 of the combine harvester, and the rotating shaft 2 is in transmission connection with the sensor swing arm 3 through the linear bearing 11.

Further, the number of the angle sensors 4 is two, the two angle sensors 4 are respectively arranged at two ends of the rotating shaft 2, and the number of the sensor swing arms 3 is consistent with that of the angle sensors 4 and corresponds to one another. During operation, the angle sensors 4 at the two ends of the rotating shaft 2 receive the stubble cutting height data at the left end and the right end simultaneously, and the two sets of data are compared and analyzed, so that the accuracy of the measuring result is improved.

In order to ensure that the angle sensor 4 can work properly, the effective stroke of the angle sensor 4 is 60 °.

The formula for converting the angle sensor 4 into the height after measuring the angle is listed below:

H＝CD*sin(θ₄-θ₃+θ₂)

where AC is the length (mm) of the rotation axis 2 from the center point of the angle sensor 4; AB is the length (mm) of the swing arm 3 of the angle sensor 4; CD is the height (mm) of the copying splint 1; h is the height (mm) from the bottom of the profiling supporting plate 1 to a cutting knife, and the angles in the formula are specifically shown in figure 3. The stubble cutting height detection device of the combine harvester is stable and reliable in structure and simple in conversion formula, and the precision of data measurement is further improved.

The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.