CN219812536U - Stubble height detection device for agricultural machinery - Google Patents
Stubble height detection device for agricultural machinery Download PDFInfo
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- CN219812536U CN219812536U CN202321268471.1U CN202321268471U CN219812536U CN 219812536 U CN219812536 U CN 219812536U CN 202321268471 U CN202321268471 U CN 202321268471U CN 219812536 U CN219812536 U CN 219812536U
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- height detection
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- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 230000008859 change Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
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- 238000003306 harvesting Methods 0.000 description 5
- 241000209140 Triticum Species 0.000 description 3
- 235000021307 Triticum Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241001024327 Oenanthe <Aves> Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model discloses a device for detecting the stubble cutting height of an agricultural machine, belonging to the technical field of agricultural machine matched equipment; the utility model provides a farm machinery stubble height detection device, includes the profile modeling layer board, profile modeling layer board and rotation axis connection, profile modeling layer board and rotation axis are all located the header bottom of farm machinery, be provided with the elastic component between profile modeling layer board and the header, the rotation axis is rotatable to be installed in the header bottom, the rotation axis passes through the sensor swing arm and is connected with angle sensor, the front end of profile modeling layer board is the arc, the arc is crooked upwards, the front end of arc is provided with the reel; the utility model has the advantages of prolonging the service life of the profiling supporting plate and improving the accuracy of the detection result.
Description
Technical Field
The utility model relates to the technical field of agricultural machinery supporting equipment, in particular to a stubble cutting height detection device of an agricultural machinery.
Background
Stubble cutting refers to the crop stem portion left in the field and leaked out of the ground after harvesting the crops. With the development of modern and automatic agriculture, the stubble height of the agricultural machine is an important factor influencing the harvesting effect when harvesting crops. When a plurality of operators work, the header is selected to be lifted, and higher stubble is left, so that the header is prevented from rubbing on the ground in a field with uneven height, mechanical faults are caused, the operation of the agricultural machinery is facilitated to be rapidly propelled, but the phenomenon that crops in a concave position and wheat ears with lower straw (taking wheat as an example) are missed to cut is caused, loss is caused, and therefore, how to detect and adjust the stubble cutting height of the agricultural machinery in the harvesting process is very important to the harvesting effect.
The Chinese patent application No. 202021748225.2 provides a combine harvester stubble height detection device, detects the stubble height through detecting the rotation angle of the profiling supporting plate, and sets up the elastic component between profiling supporting plate and the header of combine harvester to reduce the vibration that profiling supporting plate produced in the agricultural machinery driving process, improve the accuracy. However, the front end of the profiling supporting plate is of a straight plate structure (as can be seen from fig. 1), the straight plate structure encounters high stubble cutting density in the travelling process of the agricultural machine and can choke on the stubble cutting, and although the profiling supporting plate can press the elastic piece and lift upwards and push the straw to incline, the profiling supporting plate is deformed and the stubble cutting height detection effect is influenced for a long time, so that improvement is needed.
Disclosure of Invention
The utility model aims to solve the problem that a stubble cutting height detection device in the prior art cannot detect the stubble cutting height in the transverse direction of the running direction, and provides a stubble cutting height detection device for an agricultural machine.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a farm machinery cuts stubble height detection device, includes the profile modeling layer board, the profile modeling layer board is connected with the rotation axis, profile modeling layer board and rotation axis all are located the header bottom of farm machinery, be provided with the elastic component between profile modeling layer board and the header, the rotation axis is rotatable to be installed in the header bottom, the rotation axis passes through the sensor swing arm and is connected with angle sensor, the front end of profile modeling layer board is the arc, the arc is upwards crooked.
Further, a winding drum is arranged at the front end of the arc-shaped plate.
Further, the profiling support plates are arranged on the rotating shaft along the axial direction, a rotating gap is reserved between the profiling support plates and the rotating shaft, a pressure sensor is arranged on the profiling support plates, and one end of the elastic piece abuts against the detecting end of the pressure sensor.
Further, the profiling support plates are arranged on the rotating shaft along the axial direction, a rotating gap is reserved between the profiling support plates and the rotating shaft, a pressure sensor is arranged at the bottom of the cutting table, and one end of the elastic piece abuts against the detecting end of the pressure sensor.
Further, an inner gear ring is fixed on the profiling supporting plate, a tooth slot is formed in the inner wall of the inner gear ring, a gear is arranged on the inner side of the inner gear ring and fixed on the rotating shaft, teeth corresponding to the tooth slot are arranged on the outer wall of the gear, and a gap is reserved between the teeth and the tooth slot during rotation.
Further, the inner gear ring and the gear are of concentric structures, and a deflection angle is arranged between the teeth and the tooth grooves.
Further, the deflection angle is not greater than 2 degrees.
Compared with the prior art, the utility model provides the agricultural machinery stubble cutting height detection device, which has the following beneficial effects:
according to the stubble cutting height detection device of the agricultural machine, the arc-shaped plate which is bent upwards is arranged at the front end of the profiling supporting plate, so that an upward elevation angle is formed between the profiling supporting plate and stubble cutting when the profiling supporting plate touches the densely higher stubble cutting, the profiling supporting plate is naturally lifted under the action of the collision of the stubble cutting, the profiling supporting plate is prevented from choking the stubble cutting, and the service life of the profiling supporting plate is prolonged.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows; and will be apparent to those skilled in the art in part based upon a review of the following; alternatively, the teachings may be directed to practice of the present utility model.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is an enlarged schematic view of the portion A in FIG. 1;
fig. 3 is a schematic view of the internal structure of the outer gear ring of the present utility model.
In the figure:
1. profiling supporting plates; 2. a rotation shaft; 3. an elastic member; 4. a pressure sensor; 5. an arc-shaped plate; 6. a reel; 7. an inner gear ring; 8. a gear; 9. teeth; 10. tooth slots; 11. deflection angle.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-3, the stubble height detection device of the agricultural machine comprises a profiling supporting plate 1, wherein the profiling supporting plate 1 is connected with a rotating shaft 2, the profiling supporting plate 1 and the rotating shaft 2 are both positioned at the bottom of a cutting table of the agricultural machine, an elastic piece 3 is arranged between the profiling supporting plate 1 and the cutting table, in the embodiment, the elastic piece 3 is a coil spring, the initial state of the elastic piece 3 is a compression state, the rotating shaft 2 is rotatably arranged at the bottom of the cutting table, the rotating shaft 2 is connected with an angle sensor through a sensor swing arm, the front end of the profiling supporting plate 1 is an arc-shaped plate 5, the arc-shaped plate 5 is bent upwards, and particularly as shown in fig. 1, when the profiling supporting plate 1 props against a stubble positioned in front of a driving route, an upward elevation angle is formed between the profiling supporting plate 1 and the stubble, the upward lifting resistance of the profiling supporting plate 1 is reduced, and a winding drum 6 can be integrally formed at the front end of the arc-shaped plate 5, so that the resistance suffered by the profiling supporting plate 1 is further reduced.
The device comprises a plurality of profiling supporting plates 1, wherein the profiling supporting plates 1 are axially arranged on a rotating shaft 2, a rotating gap is reserved between the profiling supporting plates 1 and the rotating shaft 2, a pressure sensor 4 can be arranged on the profiling supporting plates 1, or the pressure sensor 4 is arranged at the bottom of a cutting table, the initial state of the pressure sensor 4 is in a pressed state, one end of an elastic piece 3 is propped against the detection end of the pressure sensor 4, when the profiling supporting plates 1 meet high stubble in the running process of an agricultural machine, the elastic piece 3 is upwards lifted, the elastic piece 3 is extruded, the elasticity generated by deformation of the elastic piece 3 is transmitted to the pressure sensor 4, and the deformation degree of the elastic piece 3 is in direct proportion to the lifting distance of the profiling supporting plates 1, so that the pressure value detected by the pressure sensor 4 is also in direct proportion to the lifting distance of the profiling supporting plates 1, the lifting height of the profiling supporting plates 1 can be obtained through analysis, and the initial height of the profiling supporting plates 1 can be compared, and the height after the lifting of the profiling supporting plates 1 can be obtained, so that the stubble cutting height can be detected;
in the running process of the agricultural machine, the field surface has high and low variation along with the running direction, the transverse direction of the running direction also has high and low variation, when the integral profiling supporting plate and the rotating shaft pass through the terrain, only the high position can be detected, the stubble cutting at the high position is broken, under serious conditions, the soil or stones can be carried out on the cutting table, the wheat head entering bin is influenced or the mechanical failure is caused, therefore, in the detection process, the detection of the high and low variation of the wheat head in the transverse direction of the running direction (namely the axial direction of the rotating shaft 2) is also important, when the multifunctional profiling supporting plate is used, the rotation variation of different profiling supporting plates 1 is also different when the transverse direction is high and low, and compared with the prior art, the median of the height variation value obtained by all the pressure sensors 4 is taken, and the detection of the cutting height at the position is more accurate.
The pressure sensor 4 can be installed on the profiling supporting plate 1, then one end of the bottom of the elastic piece 3 is pressed on the pressure sensor 4, or the pressure sensor 4 is installed at the bottom of the cutting table, then one end of the top of the elastic piece 3 is propped against the pressure sensor 4, when the pressure sensor 4 is installed at the bottom of the cutting table, the whole weight of the profiling supporting plate 1 can be reduced, but the cutting table needs to be processed, and the profiling supporting plate can be selected according to actual needs when in use.
The profiling support plate 1 is fixedly provided with an inner gear ring 7, the inner wall of the inner gear ring 7 is provided with tooth grooves 10, the inner side of the inner gear ring 7 is provided with a gear 8, the gear 8 is fixed on the rotating shaft 2, the outer wall of the gear 8 is provided with teeth 9 corresponding to the tooth grooves 10, a gap is reserved between the teeth 9 and the tooth grooves 10 when the profiling support plate 1 rotates upwards or downwards, and particularly as shown in fig. 3, before the gap is eliminated, the pressure on the elastic piece 3 is detected to be increased or reduced by the pressure sensor 4, and the too high or the too low height is obtained by analysis, so that the detection sensitivity is improved;
after the clearance is eliminated, the profiling supporting plate 1 drives the inner gear ring 7 to rotate, the inner gear ring 7 pushes the teeth 9 through the tooth grooves 10 to drive the gears 8 to rotate, so that the rotating shaft 2 is driven to rotate, and the angle sensor detects the rotating angle of the rotating shaft 2, which is the same as the prior art and is not described in detail.
The inner gear ring 7 and the gear 8 are of concentric structures, a deflection angle 11 is arranged between the teeth 9 and the tooth grooves 10, as shown in fig. 3, the central angle of the gap is the deflection angle 11, the pressure sensor 4 is used for detecting the angle change of the deflection angle 11 when the profiling supporting plate 1 rotates, the detection sensitivity of the device is improved, the detection error caused by the gap and looseness is reduced, the deflection angle 11 is not more than 2 degrees, particularly between 1 degree and 2 degrees, and the front end height change range of the profiling supporting plate 1 detected by the pressure sensor 4 is about 1 cm according to the difference of the lengths of the profiling supporting plate 1.
Working principle: in the running process of the agricultural machinery, the profiling supporting plate 1 is abutted against the stubble cutting, the profiling supporting plate 1 drives the rotating shaft 2 to rotate along with the change of the stubble cutting height, when the rotating angle of the rotating shaft 2 is small, the pressure sensor 4 detects the pressure change caused by the slight height change, and when the rotating angle is large, the rotating shaft transmits the angle change to the angle sensor through the sensor swing arm;
when the transverse direction is uneven during running, the median of the pressure values detected by the pressure sensors 4 is taken, and compared with the prior art, the detection result is better and more accurate.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (7)
1. The utility model provides a farm machinery cuts stubble height detection device, includes profile modeling layer board (1), profile modeling layer board (1) are connected with rotation axis (2), profile modeling layer board (1) and rotation axis (2) all are located the header bottom of farm machinery, be provided with elastic component (3) between profile modeling layer board (1) and the header, rotation axis (2) rotatable mounting is in the header bottom, rotation axis (2) are connected with angle sensor through the sensor swing arm, a serial communication port, the front end of profile modeling layer board (1) is arc (5), arc (5) are upwards crooked.
2. The agricultural machinery stubble height detection device according to claim 1, wherein a reel (6) is arranged at the front end of the arc-shaped plate (5).
3. The agricultural machine stubble height detection device according to claim 1, wherein a plurality of profiling supporting plates (1) are arranged on the rotating shaft (2) along the axial direction, a rotating gap is reserved between the profiling supporting plates (1) and the rotating shaft (2), a pressure sensor (4) is arranged on the profiling supporting plates (1), and one end of the elastic piece (3) abuts against the detection end of the pressure sensor (4).
4. The agricultural machine stubble height detection device according to claim 1, wherein a plurality of profiling supporting plates (1) are arranged on the rotating shaft (2) along the axial direction, a rotating gap is reserved between the profiling supporting plates (1) and the rotating shaft (2), a pressure sensor (4) is arranged at the bottom of the cutting table, and one end of the elastic piece (3) abuts against the detection end of the pressure sensor (4).
5. The agricultural machinery stubble height detection device according to claim 3 or 4, characterized in that an inner gear ring (7) is fixed on the profiling supporting plate (1), tooth grooves (10) are formed in the inner wall of the inner gear ring (7), a gear (8) is arranged on the inner side of the inner gear ring (7), the gear (8) is fixed on the rotating shaft (2), teeth (9) corresponding to the tooth grooves (10) are arranged on the outer wall of the gear (8), and gaps are reserved between the teeth (9) and the tooth grooves (10) in rotation.
6. The agricultural machinery stubble height detection device according to claim 5, wherein the inner gear ring (7) and the gear (8) are of concentric structures, and a deflection angle (11) is arranged between the teeth (9) and the tooth grooves (10).
7. The agricultural machine stubble height detection device according to claim 6, wherein the deflection angle (11) is not more than 2 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321268471.1U CN219812536U (en) | 2023-05-24 | 2023-05-24 | Stubble height detection device for agricultural machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321268471.1U CN219812536U (en) | 2023-05-24 | 2023-05-24 | Stubble height detection device for agricultural machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219812536U true CN219812536U (en) | 2023-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321268471.1U Active CN219812536U (en) | 2023-05-24 | 2023-05-24 | Stubble height detection device for agricultural machinery |
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| Country | Link |
|---|---|
| CN (1) | CN219812536U (en) |
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2023
- 2023-05-24 CN CN202321268471.1U patent/CN219812536U/en active Active
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