CN111903341A - Threshing cylinder and method for adjusting rotating speed during threshing by adopting same - Google Patents
Threshing cylinder and method for adjusting rotating speed during threshing by adopting same Download PDFInfo
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- CN111903341A CN111903341A CN202010813111.XA CN202010813111A CN111903341A CN 111903341 A CN111903341 A CN 111903341A CN 202010813111 A CN202010813111 A CN 202010813111A CN 111903341 A CN111903341 A CN 111903341A
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- threshing
- force measuring
- threshing cylinder
- force
- teeth
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F7/00—Threshing apparatus
- A01F7/02—Threshing apparatus with rotating tools
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/18—Threshing devices
- A01F12/181—Adjustable threshing mechanisms
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/18—Threshing devices
- A01F12/22—Threshing cylinders with teeth
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/58—Control devices; Brakes; Bearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0061—Force sensors associated with industrial machines or actuators
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Threshing Machine Elements (AREA)
Abstract
The invention discloses a threshing cylinder and a rotating speed adjusting method during threshing by adopting the threshing cylinder. The rotating speed adjusting method comprises the steps of detecting and obtaining the material resistance born by the force measuring teeth when the threshing cylinder rotates to thresh in the threshing device, obtaining the current feeding quantity inside the threshing device, adjusting the rotating speed of the threshing cylinder to be matched with the current feeding quantity, and accurately obtaining the feeding quantity condition inside the threshing device, so that the rotating speed of the threshing cylinder can be accurately adjusted, the crushing rate and the non-threshing rate are further reduced, and the working performance and the threshing effect of the threshing device are improved.
Description
Technical Field
The invention relates to the technical field of agricultural machinery, in particular to a threshing cylinder and a rotating speed adjusting method during threshing by adopting the threshing cylinder.
Background
Threshing is one of the core links of crop harvesting, and the working quality of threshing directly influences the overall quality of harvesting. At present, the self-adaptive feeding amount technology is vigorously developed in a threshing link abroad, and a breakthrough is made, but the self-adaptive research aspect in China is late due to the blockade of the foreign technology, and the application is low.
At present, the domestic method for detecting the feed amount mainly comprises the following steps: (1) the feeding amount is estimated by detecting the grain flow; (2) predicting the feeding amount by detecting the power consumption of the main threshing element; (3) fusing the methods (1) and (2) to predict the feeding amount; (4) and establishing a feeding quantity detection model by detecting the extrusion force of the fed materials on the gap bridge. However, the above-mentioned detection method is to detect the related parameters of the device before the threshing device to determine the feeding amount, and all the detection methods are to indirectly calculate the value of the feeding amount by detecting the related parameters of other working components, because the state of the parameters of the grain shape, the laying sequence and the like in the threshing device is different from the state before the threshing device, the error between the detected feeding amount of the crop and the actual feeding amount of the grain in the threshing device is larger, the system adjusts the working parameters of the threshing device according to the feeding amount obtained by the detection methods, and the error between the adjusted working parameters of the threshing device and the actual working parameters which should be selected is larger, so that the crushing rate and the unpeeled rate are also larger, and the working performance and the threshing effect are reduced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a threshing cylinder which can detect and obtain material resistance data reflecting the feeding amount, has high detection accuracy, is easy to improve and has low improvement cost, and correspondingly provides a rotating speed adjusting method for threshing by adopting the threshing cylinder.
In order to solve the technical problems, the invention adopts the following technical scheme:
a threshing cylinder comprises a rotating shaft and a plurality of toothed bars arranged on the rotating shaft, wherein a plurality of threshing teeth are arranged on each toothed bar, more than one force measuring tooth is arranged on at least one toothed bar, and the threshing cylinder further comprises a force measuring device used for detecting the material resistance born by the force measuring teeth.
In the above threshing cylinder, preferably, the force measuring teeth are mounted on the toothed bar in a swinging manner, and a swinging axis of the force measuring teeth extends along the axial direction of the rotating shaft.
In the above threshing cylinder, preferably, the force measuring device comprises more than one force meter installed on the threshing cylinder, and the force meters are connected with the force measuring teeth.
In the above threshing cylinder, preferably, the force measuring device further includes a signal transceiver for receiving a force signal detected by the force measuring device and outputting the force signal in a wireless transmission manner, and more than one force measuring device is connected to the signal transceiver.
In the above threshing cylinder, preferably, the force measuring device further comprises a housing having a closed cavity, the housing is fixedly mounted on the rotating shaft and/or the toothed bar, and the force gauge and the signal transceiver are both mounted in the closed cavity.
Foretell threshing cylinder, it is preferred, the shell is including mutual butt joint formation the left casing and the right casing of airtight inner chamber, form a cladding at the outside tubular structure of pivot between left casing and the right casing, and left casing and right casing all are connected the fastening through fastener and pivot, left side casing and right casing are still fixed through an upper fastener interconnect.
In the above threshing cylinder, preferably, the force measuring device has two force meters, the two force meters are respectively arranged on two sides of the force measuring teeth, and each force meter is connected with the force measuring teeth through a ball hinge.
In the above threshing cylinder, preferably, the rack bar is provided with a through hole, the force measuring teeth are inserted into the through hole, and each force gauge is located between the rack bar and the rotating shaft.
A method for adjusting the rotating speed during threshing by adopting the threshing cylinder comprises the following steps:
(S1) mounting the threshing cylinder in a threshing device, and detecting the material resistance borne by force measuring teeth in contact with the material in real time by using a force measuring device in the process of feeding the material into the threshing device for threshing;
(S2) obtaining the current feeding quantity inside the threshing device according to the measured material resistance;
(S3) adjusting the rotating speed of the threshing cylinder to make the rotating speed of the threshing cylinder be a proper size matched with the current feeding amount.
Compared with the prior art, the invention has the advantages that:
when the threshing cylinder is arranged in the threshing device to thresh materials, the force measuring device detects the material resistance born by the force measuring teeth which are contacted with the materials, so that the feeding quantity corresponding to the material resistance can be obtained by conjecture according to the material resistance, and the total feeding quantity of the threshing device and the rotating speed of the threshing cylinder are controlled according to the feeding quantity, so that the threshing device is in the best working state, the purposes of reducing the crushing rate and the non-threshing rate are achieved, and the working performance and the threshing effect of the threshing device are improved. Because the dynamometry tooth is installed on the ratch, it is located thresher inside and with material direct contact, it directly obtains material resistance size, and this material resistance size has directly reflected the inside feeding volume condition of thresher, and it detects more accurately, can provide more accurate reference for total feeding volume and threshing cylinder's rotational speed regulation. Moreover, the force measuring teeth and the force measuring device are arranged, only a small part of the area is changed on the basis of the existing threshing cylinder, and the improvement difficulty and the cost are low.
The rotating speed adjusting method can accurately obtain the feeding amount condition in the threshing device, realize the accurate adjustment of the rotating speed of the threshing cylinder, further reduce the crushing rate and the non-threshing rate, and improve the working performance and the threshing effect of the threshing device.
Drawings
Fig. 1 is a schematic perspective view of a threshing cylinder.
Fig. 2 is a schematic view of a partially enlarged perspective structure of the force measuring teeth and of the force measuring device.
Fig. 3 is a schematic sectional view of the force measuring teeth and the force measuring device.
Fig. 4 is an enlarged partial sectional structural illustration of the force measuring toothing and of the force measuring device.
Illustration of the drawings:
1. a rotating shaft; 2. a rack bar; 21. threshing teeth; 22. a through hole; 3. force measuring teeth; 4. a force gauge; 5. a signal transceiver; 6. a housing; 61. a left housing; 62. a right housing; 7. and (4) a ball hinge.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
As shown in fig. 1 to 4, the threshing cylinder of the present embodiment includes a rotating shaft 1 and a plurality of toothed bars 2 mounted on the rotating shaft 1, each toothed bar 2 is provided with a plurality of threshing teeth 21, one toothed bar 2 is provided with one force measuring tooth 3, and the threshing cylinder further includes a force measuring device for detecting the material resistance borne by the force measuring tooth 3. When the threshing cylinder is arranged in a threshing device to thresh materials, the force measuring device detects the material resistance born by the force measuring teeth 3 which are contacted with the materials, so that the feeding quantity corresponding to the material resistance can be obtained by conjecture according to the material resistance, and the total feeding quantity of the threshing device and the rotating speed of the threshing cylinder are controlled according to the feeding quantity, so that the threshing device is in the best working state, the purposes of reducing the crushing rate and the non-threshing rate are achieved, and the working performance and the threshing effect of the threshing device are improved. Because dynamometry tooth 3 is installed on ratch 2, it is located thresher inside and with material direct contact, it directly obtains material resistance size, and this material resistance size has directly reflected the inside feeding volume condition of thresher, and it detects more accurately, can provide more accurate reference for total feeding volume and threshing cylinder's rotational speed regulation. Moreover, the force measuring teeth 3 and the force measuring device are arranged, only a small part of the area is changed on the basis of the existing threshing cylinder, and the improvement difficulty and the cost are low.
In other embodiments, the force measuring teeth 3 may be further mounted on a plurality of toothed bars 2, the number of the force measuring teeth 3 on each toothed bar 2 may be more than one, and the mounting positions of the force measuring teeth 3 are distributed at different positions. The material resistance born by the force measuring teeth 3 at different positions can be detected and obtained, the feeding amount at different positions can be obtained, and then the total feeding amount and the rotating speed of the threshing cylinder can be controlled more optimally by combining the feeding amounts at a plurality of different positions.
In the embodiment, the force measuring teeth 3 are installed on the rack bar 2 in a swinging mode, and the swinging axes of the force measuring teeth 3 extend along the axial direction of the rotating shaft 1.
In this embodiment, the force measuring device comprises more than one force gauge 4 mounted on the threshing cylinder, the force gauge 4 being connected to the force measuring teeth 3. When the force measuring teeth 3 swing, different material resistance values enable the force measuring teeth to have different swing amplitudes, and then the force measuring meter 4 detects and obtains corresponding material resistance values. The force measuring device has the advantages of simple structure, low cost, stable and reliable work, and high detection precision and sensitivity. Dynamometry tooth 3 directly links to each other with dynamometer 4 through the swing mode, and it adopts lever principle to conduct power to dynamometer 4, makes measuring device's simple structure, has avoided the loss of power in the conduction process, can calculate the size of threshing power faster, more accurately simultaneously, has promoted the accuracy, and manufacturing cost is also lower.
In this embodiment, the force measuring device further comprises a signal transceiver 5 for receiving the force signal detected by the force gauge 4 and outputting the force signal in a wireless transmission manner, and more than one force gauge 4 is connected with the signal transceiver 5. The signal transceiver 5 can output the force signal in a wireless transmission mode, a signal conducting wire is not needed, the manufacturing and assembling difficulty can be reduced, and the control is convenient.
In the embodiment, the force measuring device further comprises a shell 6 with a closed cavity, the shell 6 is fixedly installed on the rotating shaft 1 and/or the toothed bar 2, the dynamometer 4 and the signal transceiver 5 are both installed in the closed cavity, impurities such as dust are prevented from entering and affecting the work of the dynamometer 4 and the signal transceiver 5, and the dynamometer 4 and the signal transceiver 5 can also be prevented from being abraded and damaged due to splashes in the threshing process.
In this embodiment, the housing 6 includes a left housing 61 and a right housing 62 that are butted to each other to form a sealed inner cavity, a cylindrical structure that covers the outside of the rotating shaft 1 is formed between the left housing 61 and the right housing 62, the left housing 61 and the right housing 62 are both connected and fastened with the rotating shaft 1 through fasteners, and the left housing 61 and the right housing 62 are further connected and fixed to each other through an upper fastener. The combination of the shell 6 and the installation mode thereof can open the closed inner cavity, thereby being convenient for the installation, replacement and maintenance of the dynamometer 4 and the signal transceiver 5. Meanwhile, the shell 6 is good in connection and installation stability and simple and convenient to disassemble and assemble. The above-mentioned fasteners are screws, and the load cell 4 and the signal transceiver 5 are also connected to the housing 6 by screws. Dynamometer 4 and signal transceiver 5 install in the threshing teeth, make full use of the threshing teeth in not have the space of material to place whole detection device in the threshing teeth change little to the machines, reduced the cost that this mode was promoted, only need change threshing cylinder or corresponding threshing parts can detect.
In this embodiment, the force measuring device has two force meters 4, the two force meters 4 are respectively disposed on two sides of the force measuring tooth 3, and each force meter 4 is connected with the force measuring tooth 3 through a ball hinge 7. Compared with the traditional hinge, the ball hinge 7 can avoid the phenomenon of blocking, and ensures the stability of detection; meanwhile, when the force measuring teeth 3 slightly deviate along the rotating shaft 1, force can be transmitted to the dynamometer 4, and the force transmission performance is better; furthermore, the installation of the ball joint 7 is simpler and less costly than a hinged installation.
In this embodiment, the rack bar 2 is provided with a through hole 22, the force measuring teeth 3 are inserted into the through hole 22, and the respective force meters 4 are located between the rack bar 2 and the rotating shaft 1. The structure compactness can be improved, and the installation stability of the force measuring teeth 3 is good. Preferably, two hinge lugs are arranged on the side surface of the toothed bar 2 facing away from the rotating shaft 1, and the force measuring teeth 3 are positioned between the two hinge lugs and are hinged with the two hinge lugs through pin shafts.
A method for adjusting the rotating speed when threshing by adopting the threshing cylinder of the embodiment comprises the following steps:
(S1) the threshing cylinder is arranged in the threshing device, and the force measuring device is used for detecting the material resistance born by the force measuring teeth 3 which are contacted with the material in real time in the process of feeding the material into the threshing device for threshing.
(S2) obtaining the current feeding quantity inside the threshing device according to the measured material resistance; specifically, the corresponding feeding amount under the condition of different material resistance is obtained through experiments, a corresponding relation database of the material resistance and the feeding amount is established, and after the material resistance is obtained through detection, the feeding amount corresponding to the material resistance is obtained according to the corresponding relation database of the material resistance and the feeding amount.
(S3) adjusting the rotating speed of the threshing cylinder to make the rotating speed of the threshing cylinder be a proper size matched with the current feeding amount. Specifically, the proper rotating speed corresponding to different feeding amounts is obtained through experiments, a corresponding relation database of the feeding amounts and the rotating speeds is established, after the feeding amounts are obtained, the rotating speed corresponding to the feeding amounts is obtained according to the corresponding relation database of the feeding amounts and the rotating speeds, and then the rotating speed of the threshing cylinder is adjusted to the rotating speed.
By adopting the method, the feeding quantity condition in the threshing device can be accurately obtained, the rotating speed of the threshing cylinder can be accurately adjusted, the crushing rate and the non-threshing rate are further reduced, and the working performance and the threshing effect of the threshing device are improved.
The rotating speed adjusting method can be automatically controlled by combining with a controller, the force measuring device sends a detected force signal to the controller, and the controller processes the force signal and then matches the processed force signal with preset material resistance and feeding amount corresponding data to obtain the feeding amount inside the threshing device. And then adjusting the rotating speed of the rotating shaft 1 to a proper size matched with the current feeding amount according to the preset corresponding data of the feeding amount and the rotating speed.
In this embodiment, the signal transceiver 5 has a built-in power supply and supplies power for its operation and the dynamometer 4. When the built-in power supply of the signal transceiver 5 is in a low electric quantity, the signal transceiver 5 sends a low electric quantity signal to the controller, and the controller controls the early warning lamp to be turned on so as to facilitate the staff to see and then charge in time.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments. Modifications and variations that may occur to those skilled in the art without departing from the spirit and scope of the invention are to be considered as within the scope of the invention.
Claims (9)
1. The utility model provides a threshing cylinder, includes pivot (1) and installs many ratchets (2) on pivot (1), is equipped with a plurality of threshing teeth (21) on each ratchets (2), its characterized in that: at least one toothed bar (2) is provided with more than one force measuring tooth (3), and the threshing cylinder also comprises a force measuring device for detecting the material resistance borne by the force measuring teeth (3).
2. The threshing cylinder of claim 1, wherein: the force measuring teeth (3) are arranged on the rack bar (2) in a swinging mode, and the swinging axes of the force measuring teeth (3) extend along the axis direction of the rotating shaft (1).
3. The threshing cylinder of claim 2, wherein: the force measuring device comprises more than one force meter (4) arranged on the threshing cylinder, and the force meters (4) are connected with the force measuring teeth (3).
4. The threshing cylinder of claim 3, wherein: the force measuring device also comprises a signal transceiver (5) for receiving the force signals detected by the force measuring cells (4) and outputting the force signals in a wireless transmission mode, and more than one force measuring cell (4) is connected with the signal transceiver (5).
5. The threshing cylinder of claim 4, wherein: the force measuring device further comprises a shell (6) with a closed cavity, the shell (6) is fixedly installed on the rotating shaft (1) and/or the toothed bar (2), and the dynamometer (4) and the signal transceiver (5) are installed in the closed cavity.
6. The threshing cylinder of claim 5, wherein: the shell (6) comprises a left shell (61) and a right shell (62) which are mutually butted to form the sealed inner cavity, a cylindrical structure covering the outer part of the rotating shaft (1) is formed between the left shell (61) and the right shell (62), the left shell (61) and the right shell (62) are connected and fastened with the rotating shaft (1) through fasteners, and the left shell (61) and the right shell (62) are further fixedly connected and fastened with each other through an upper fastener.
7. The threshing cylinder of claim 3, wherein: the force measuring device is provided with two force measuring devices (4), the two force measuring devices (4) are respectively arranged at two sides of the force measuring teeth (3), and each force measuring device (4) is connected with the force measuring teeth (3) through a ball hinge (7).
8. The threshing cylinder of claim 3, wherein: a through hole (22) is formed in the toothed bar (2), the force measuring teeth (3) penetrate through the through hole (22), and each force gauge (4) is located between the toothed bar (2) and the rotating shaft (1).
9. A method of adjusting the rotation speed of a threshing cylinder according to any one of claims 1 to 8, characterized in that: the method comprises the following steps:
(S1) the threshing cylinder is arranged in a threshing device, and when the materials are fed into the threshing device for threshing, a force measuring device is used for detecting the material resistance borne by a force measuring tooth (3) which is in contact with the materials in real time;
(S2) obtaining the current feeding quantity inside the threshing device according to the measured material resistance;
(S3) adjusting the rotating speed of the threshing cylinder to make the rotating speed of the threshing cylinder be a proper size matched with the current feeding amount.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010813111.XA CN111903341B (en) | 2020-08-13 | 2020-08-13 | Threshing cylinder and method for adjusting rotating speed during threshing by adopting same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010813111.XA CN111903341B (en) | 2020-08-13 | 2020-08-13 | Threshing cylinder and method for adjusting rotating speed during threshing by adopting same |
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| CN111903341A true CN111903341A (en) | 2020-11-10 |
| CN111903341B CN111903341B (en) | 2022-04-15 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5838253U (en) * | 1981-09-07 | 1983-03-12 | ヤンマー農機株式会社 | Thresher equipped with handling barrel load detection device |
| CN102119608A (en) * | 2011-01-18 | 2011-07-13 | 莱恩农业装备有限公司 | Threshing grass-smashing mechanism for half-feeding type combine harvester |
| CN203840806U (en) * | 2014-05-19 | 2014-09-24 | 福田雷沃国际重工股份有限公司 | Threshing tooth and threshing cylinder utilizing same |
| CN204132018U (en) * | 2014-08-23 | 2015-02-04 | 福田雷沃国际重工股份有限公司 | Corn kernel installed threshing separator and there is the combined harvester of this separator |
| BR102014005510A2 (en) * | 2013-03-12 | 2015-06-02 | Goodyear Tire & Rubber | Vehicle dynamic load estimation system and method |
| CN106664990A (en) * | 2016-12-30 | 2017-05-17 | 江苏大学 | Adjusting device and adjusting method for cereal threshing cylinder concave clearance |
| CN108432471A (en) * | 2018-02-08 | 2018-08-24 | 江苏大学 | A kind of adjustable longitudinal axial flow roller structure of threshing diameter |
| CN110530560A (en) * | 2019-10-09 | 2019-12-03 | 河南科技大学 | A kind of threshing force checking device |
-
2020
- 2020-08-13 CN CN202010813111.XA patent/CN111903341B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5838253U (en) * | 1981-09-07 | 1983-03-12 | ヤンマー農機株式会社 | Thresher equipped with handling barrel load detection device |
| CN102119608A (en) * | 2011-01-18 | 2011-07-13 | 莱恩农业装备有限公司 | Threshing grass-smashing mechanism for half-feeding type combine harvester |
| BR102014005510A2 (en) * | 2013-03-12 | 2015-06-02 | Goodyear Tire & Rubber | Vehicle dynamic load estimation system and method |
| CN203840806U (en) * | 2014-05-19 | 2014-09-24 | 福田雷沃国际重工股份有限公司 | Threshing tooth and threshing cylinder utilizing same |
| CN204132018U (en) * | 2014-08-23 | 2015-02-04 | 福田雷沃国际重工股份有限公司 | Corn kernel installed threshing separator and there is the combined harvester of this separator |
| CN106664990A (en) * | 2016-12-30 | 2017-05-17 | 江苏大学 | Adjusting device and adjusting method for cereal threshing cylinder concave clearance |
| CN108432471A (en) * | 2018-02-08 | 2018-08-24 | 江苏大学 | A kind of adjustable longitudinal axial flow roller structure of threshing diameter |
| CN110530560A (en) * | 2019-10-09 | 2019-12-03 | 河南科技大学 | A kind of threshing force checking device |
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