CN209732051U - Self-adaptive cleaning device of grain harvester - Google Patents
Self-adaptive cleaning device of grain harvester Download PDFInfo
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- CN209732051U CN209732051U CN201920273958.6U CN201920273958U CN209732051U CN 209732051 U CN209732051 U CN 209732051U CN 201920273958 U CN201920273958 U CN 201920273958U CN 209732051 U CN209732051 U CN 209732051U
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- belt wheel
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- sliding
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- 238000004140 cleaning Methods 0.000 title claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 230000003044 adaptive effect Effects 0.000 claims 2
- 238000000034 method Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 16
- 235000013339 cereals Nutrition 0.000 description 21
- 230000000694 effects Effects 0.000 description 6
- 238000012216 screening Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 238000007873 sieving Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 241001124569 Lycaenidae Species 0.000 description 1
- 244000062793 Sorghum vulgare Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000013340 harvest operation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 235000019713 millet Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model relates to a grain harvester self-adaptation cleaning plant belongs to agricultural machine technical field. The device comprises a shaking plate, a vibrating screen and a fan positioned at the input end of the vibrating screen; a fan belt wheel is arranged on a rotating shaft of the fan and is in transmission connection with a driving belt wheel through a V-belt; one side of the driving belt wheel is provided with a fixedly connected belt wheel sheet, the other side of the driving belt wheel is provided with a slipping belt wheel sheet, the outer end of the slipping belt wheel sheet is connected with the middle part of the adjusting crutch, one end of the adjusting crutch is hinged with the fixed bracket, the other end of the adjusting crutch is hinged with one end of the linkage rod, and the other end of the linkage rod is hinged with the thread block; the thread block and a driving threaded rod driven by a motor form a screw pair; one side of the fan belt wheel is provided with a fixed belt wheel sheet, the other side of the fan belt wheel is provided with a sliding belt wheel sheet, and the sliding belt wheel sheet is provided with a spring which enables the sliding belt wheel sheet to tend to be close to the fixed belt wheel sheet. The utility model discloses wind-force is strengthened when can realizing the downhill path, and wind-force weakens when going up the uphill, and the compensation material is by piling up before or quick exhaust trend to effectively avoid cleaning the loss.
Description
Technical Field
The utility model relates to a grain harvester, concretely relates to grain harvester self-adaptation cleaning plant belongs to agricultural machine technical field.
Background
The grain harvester is an agricultural machine which is popularized and applied, and the harvesting loss of the grain harvester mainly comes from cleaning loss, so the cleaning performance is an important index for measuring the operation performance of the whole machine. According to the knowledge of the applicant, most of the existing grain combine harvesters adopt an air-screen type cleaning system, the mixture of grains, short stalks, glumes and the like which are removed by a threshing and separating device enters a cleaning device which is provided with screen pieces with proper specifications according to the geometric size difference of the grains, the separation purpose is achieved through the reciprocating motion of the screen pieces, and meanwhile, light impurities are removed by utilizing the difference of the suspension speed under the coordination of the air supply of a fan.
Chinese patent documents ZL201620406662.3, ZL201310189210.5, ZL201510607324.6, ZL201510720903.1, ZL201210250990.5 and the like respectively disclose cleaning devices with various characteristics such as an air screen cleaning device for a self-propelled longitudinal double-axial flow millet combine harvester. However, when crop harvesting is carried out in hilly areas, these cleaning plants have a problem that cleaning loss is significantly increased due to poor flatness of cultivated land and a large number of fields with slopes.
Because under the action of the dead weight of the harvested grains, when the harvester operates in a downhill field, materials are accumulated towards the front part of the sieve sheet, so that the sieve sheet is difficult to play a normal sieving role; when the harvester operates on the field on the upward slope, the materials are easy to slide to the rear part of the sieve sheet and are quickly discharged; as a result, cleaning loss is increased due to insufficient screening.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: aiming at the problems in the prior art, the self-adaptive cleaning device of the grain harvester is provided, which can keep the materials basically flattened and screened on the screen piece no matter how the gradient of the field changes, thereby effectively avoiding cleaning loss during the operation on the sloping field.
In order to achieve the above purpose, the utility model discloses a basic technical scheme is: a self-adaptive cleaning device of a grain harvester comprises a shaking plate positioned below a concave plate sieve, a vibrating sieve connected with the output end of the shaking plate, and a fan positioned at the input end of the vibrating sieve; a fan belt wheel is arranged on a rotating shaft of the fan and is in transmission connection with a driving belt wheel through a V-belt;
One side of the driving belt wheel is provided with a fixed pulley sheet coupled with a rotary power source, the other side of the driving belt wheel is provided with a sliding pulley sheet which is sleeved on a shaft sleeve of the fixed pulley sheet in an empty mode, the outer end of the sliding pulley sheet is connected with the middle of an adjusting crutch, one end of the adjusting crutch is hinged with a fixed support, the other end of the adjusting crutch is hinged with one end of a linkage rod, and the other end of the linkage rod is hinged with a thread block; the thread block and an axially constrained driving threaded rod form a screw pair, and the driving threaded rod is in transmission connection with an adjusting motor;
One side of the fan belt wheel is a fixed belt wheel sheet fixedly connected with the rotating shaft, the other side of the fan belt wheel is a sliding belt wheel sheet movably sleeved on a shaft sleeve of the fixed belt wheel sheet, and the sliding belt wheel sheet is provided with a spring which enables the sliding belt wheel sheet to tend to be close to the fixed belt wheel sheet.
Therefore, when the harvester inclines forwards and backwards in the slope field operation machine body, the driving threaded rod correspondingly rotates under the control of the control circuit according to the output of the detection signal of the slope sensor, and then the linkage rod is driven to stretch through the screw pair, so that the adjusting crank allows the sliding pulley piece to be driven to be influenced by the tension of the triangular belt and to be far away from or close to the fixed pulley piece, and the effective transmission radius of the driving pulley is changed; meanwhile, the tension action of the V-belt at the belt wheel of the fan enables the sliding belt wheel sheet to correspondingly approach or separate from the fixed belt wheel sheet, and the effective transmission radius of the belt wheel of the fan is correspondingly changed; finally, the aim of correspondingly adjusting the air volume of the fan according to the front and back inclined states of the machine body is achieved, namely the wind power is strengthened when the fan goes downhill and the wind power is weakened when the fan goes uphill, so that the trend that materials are accumulated forward or are quickly discharged is compensated, the materials are fully screened on the screen pieces in a basically flat normal state, and the cleaning loss is effectively avoided.
the utility model has the further perfection that the middle part and the lower end of the groove-shaped main body of the vibrating screen are hinged at the upper end of a swinging crutch of the frame, and an eccentric wheel driven by a power source at the middle part of the swinging crutch forms a crank rocker mechanism through a connecting arm; the front end of the groove-shaped main body is hinged with the lower end of a connecting rod, the middle of the connecting rod is hinged to the lower end of a rack, the upper end of the connecting rod is hinged to the bottom of the middle of the shaking plate, and one end of the shaking plate is hinged to the rack through a swinging rod. Therefore, the shaking plate and the vibrating screen are linked by a simple and reasonable mechanism.
The utility model discloses still further perfect is, the outer end of slip pulley piece is equipped with the bearing that the outer lane tight fit and inner circle loose fitting, the ring at middle part is turned in the adjustment corresponds the contact with the inner circle position of bearing. The unconventional bearing structure not only ensures that the aim of adjusting the rotating speed of the fan is achieved by restraining the slip pulley sheet, but also can reduce the friction resistance.
The utility model discloses further perfect is, the screw thread piece extends the slip supporting shoe that has the unthreaded hole, the unthreaded hole constitutes the sliding pair with the polished rod of initiative screw rod tip. This structure can make the guide effect to the screw thread piece of initiative threaded rod play simultaneously, guarantees the stable translation of screw thread piece when it rotates.
the utility model discloses a further perfection is again, the shale shaker is including supporting last sieve and lower sieve in the flute profile main part, go up sieve and sieve front portion overlap from top to bottom down, the sieve is gone out to sieve rear portion length. Therefore, most materials are screened by the upper screen and the lower screen, and a small amount of materials which are not screened by the upper screen directly fall on the rear part of the lower screen for screening, so that the screening quality is ensured, and the efficiency is improved.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1(a), (b) and (c) are schematic structural diagrams of three working states of the grain harvester adopting the utility model respectively.
Fig. 2 is a schematic perspective view of an embodiment of the present invention.
Fig. 3 is a schematic perspective view of the fan speed change mechanism of the embodiment of fig. 2.
Fig. 4 is a schematic view of the fan pulley structure of fig. 3.
Fig. 5 is a schematic view of the driving pulley structure in fig. 3.
Fig. 6 is a schematic perspective view of the fastening pulley sheet in fig. 5.
Fig. 7 is a schematic perspective view of the self-balancing vibrating screen of the embodiment of fig. 2.
fig. 8 is a perspective view of the combination of the upper and lower screens of fig. 7.
Fig. 9 is a schematic perspective view of the upper screen of fig. 7.
Fig. 10 is a schematic perspective view of the lower screen of fig. 7.
Detailed Description
The grain harvester of the utility model is adopted in the states of ascending slope, flat ground and descending slope in the figures 1(a), (b) and (c), the front part is a header, and the middle part is provided with a self-adaptive cleaning device of the grain harvester.
The specific structure of the device is shown in fig. 2, and the device comprises a shaking plate 3 positioned below a concave plate screen 4, a self-balancing vibrating screen 2 positioned below the output end of the shaking plate 3 and connected with the shaking plate, and an automatic speed regulating fan 1 positioned at the input end of the self-balancing vibrating screen 2.
As shown in fig. 3 to 6, a fan belt wheel 9 is mounted on a rotating shaft of the automatic speed regulation fan 1, and the fan belt wheel 9 is in transmission connection with a driving belt wheel 13 through a V-belt 10. One side of the driving pulley 13 is a fixed pulley sheet 1303 coupled with the rotary power source, and the other side is a sliding pulley sheet 1302 which is sleeved on a spline shaft sleeve of the petal section in the middle of the fixed pulley sheet 1303, and the two sheets form an axial moving pair. The outer end of the sliding pulley piece 1302 is connected with the middle part of the adjusting crutch 12, and the concrete structure of the embodiment is as follows: the outer end of the sliding pulley piece 1302 is provided with a bearing 1301 with an outer ring tightly matched and an inner ring loosely matched, and the circular ring in the middle of the adjusting crank 12 is correspondingly contacted with the inner ring of the bearing 1301, so that the sliding pulley piece 1302 can be axially pushed, and the friction resistance of the rotating part and the non-rotating part is as small as possible. One end of the adjusting crutch 12 is hinged with the fixed bracket 15 through a pin 14, the other end is hinged with one end of a linkage rod 16 through a pin 11, and the other end of the linkage rod 16 is hinged with a thread block 21. The screw block 21 and the rotatable driving threaded rod 20 axially constrained by the bearing seat 22 form a screw pair, the screw block 21 extends out of the sliding support block 19 with a smooth hole, and the smooth hole and a smooth rod at the end part of the driving threaded rod 20 form a moving pair, so that a guiding effect is achieved, and the stable translation of the screw block 21 is ensured when the driving threaded rod 20 rotates. The polished rod end of the driving threaded rod 20 is provided with a retainer ring 17 and a gasket 18 which play a role of limiting. The other end of the driving screw rod 20 is provided with a driven gear 23 engaged with a driving gear 24 driven by an adjusting motor 25 so as to be rotated as required by the adjusting motor.
Referring to fig. 4, one side of the fan pulley 9 is a fixed pulley plate 902 fixedly connected with a rotating shaft of the fan, the other side is a sliding pulley plate 903 movably sleeved on a shaft sleeve of the fixed pulley plate 902, and a set of springs 904 enabling the sliding pulley plate 903 to approach the fixed pulley plate 902 are installed on a long bolt 905, a gasket 906 and a nut 901 of the sliding pulley plate 903. The spring 904 has the function of directly enabling the sliding pulley piece 903 to tend to be close to the fixed pulley piece 902, and also has the function of indirectly enabling the sliding pulley piece 1302 to tend to be far away from the sliding pulley piece 1302 through the V-belt 10, so that the axial position of the sliding pulley piece 1302 is always controlled by the adjusting crank 12.
As shown in fig. 7 and referring to fig. 8, 9 and 10, the front part and the middle part of the groove-shaped main body 5 fixedly connected with the frame are fixedly connected with a T-shaped front hinged support 26 and a cross-shaped rear hinged support 27 respectively. The upper part between the front hinge bracket 26 and the rear hinge bracket 27 is hinged with the position-changing shaft 601 at the middle part of the two ends of the upper screen 6, and the lower part is hinged with the rotating shaft 801 on the lower screen 8, one end of the rotating shaft extends out of the lower screen 8, and the other end is positioned in the bottom surface of the lower screen 8. The top of the cross-shaped rear hinged bracket 27 of this embodiment is hinged to one end of an adjusting electric cylinder 7 serving as an electric control telescopic device, and the other end of the adjusting electric cylinder 7 is hinged to one side of an upper screen frame 603 of an upper screen 6. The upper screen frame 603 has an upper screen 602 fixed therein. The lower screen sheet 804 is fixed in the lower screen frame 802 of the lower screen 8. One side of the upper screen frame 603 and one side of the lower screen frame 802 are respectively provided with a linkage shaft 604 and a linkage pin 803 which are corresponding in position, and the linkage shaft 604 and the linkage pin 803 are respectively hinged with two ends of the connecting rod 28, so that the frame, the upper screen 6, the lower screen 8 and the connecting rod 28 form a parallel four-bar linkage.
The middle part and the lower end of the groove-shaped main body 5 are hinged with the upper end of a swing crutch 29 of the frame, and an eccentric wheel 31 driven by a power source at the middle part of the swing crutch 29 forms a crank rocker mechanism through a connecting arm 30. The front end ear plate of the groove-shaped main body 5 is hinged with the lower end of a connecting rod 28 with the middle part hinged on the frame, the upper end of the connecting rod 28 is hinged with the middle bottom of the shaking plate 3, and one end of the shaking plate 3 is hinged on the frame through a swinging rod 32. Therefore, a linkage driving mechanism of the vibrating screen and the shaking plate is formed, and the same power source can simultaneously drive the self-balancing vibrating screen and the shaking plate to do reciprocating motion to screen materials.
in addition, the front parts of the upper sieve 6 and the lower sieve 8 are overlapped up and down, the upper sieve 6 is grown out of the rear part of the lower sieve 8, so that most of the materials which just fall into the lower sieve after being sieved by the upper sieve to continue sieving, the sieving effect is ensured, and a small amount of the materials which are not sieved by the upper sieve fall into the rear part of the lower sieve to be sieved.
The adjustment electric cylinder 7 and the adjustment motor 25 are respectively controlled by a control circuit C which sends out corresponding control signals according to input signals of the sensor S, and the control circuit C is powered by a battery E (see fig. 7). According to actual need, the sensor usually includes angle sensor, distance sensor and fan speed sensor etc. and control circuit uses the singlechip as the core, contains a plurality of control ports, can with host computer communication, and with have the warning and the liquid crystal display that data real-time display is connected.
Tests show that by adopting the grain harvester of the embodiment, when the vibrating screen inclines forwards and backwards due to the ascending slope and the descending slope of the harvester, the rotating speed of the cleaning fan can be automatically adjusted (see figure 1): when the machine goes up a slope, the air speed is automatically reduced, the air quantity is reduced, the retention time of materials on the screen surface is increased, the screening effect is ensured, and the loss caused by the fact that the materials are easy to slip back and are blown out of the machine body is avoided; when the cleaning sieve goes downhill, the wind speed is automatically increased to increase the wind volume, the material is blown to prevent blockage, the accumulation at the front part of the cleaning sieve is avoided, the high grain impurity rate caused by the penetration of impurities through the sieve is prevented, and the cleaning quality is ensured. Meanwhile, the upper screen and the lower screen of the vibrating screen can realize the front-back reciprocating vibration motion together with the vibrating screen main body, and meanwhile, the upper screen and the lower screen can be automatically indexed and adjusted to be kept horizontal when the harvester inclines left and right, and the upper screen and the lower screen are synchronously indexed.
In addition, the grain harvester adopting the embodiment has the following beneficial effects:
1) The upper screen and the lower screen are vertically separated from the front hinged support and the rear hinged support and are hinged after being arranged in a staggered mode, the front hinged support and the rear hinged support are fixed on the vibrating screen main body, the upper screen and the lower screen can freely rotate along with the reciprocating motion of the vibrating screen main body, the structure is simple, the cleaning effect can be guaranteed, the manufacturing cost can be reduced, the weight is reduced, and the overall stability is improved.
2) The driving belt wheel and the fan belt wheel automatically adjust the effective transmission diameter by means of the relative sliding structure of the driving belt wheel and the fan belt wheel so as to adjust the rotating speed of the fan, and the fan belt wheel has the advantages of simple structure, large transmission torque and low manufacturing cost.
3) When the grain harvester inclines left and right, the control circuit controls and adjusts the electric cylinder to correspondingly stretch according to left and right inclination angle signals detected by the inclination angle sensor, so that the upper sieve and the lower sieve are driven to rotate to reach the horizontal position; and then, if the distance detected by the distance sensor does not reach the set calibration value, a detection signal is fed back to the control circuit, and the stretching of the electric cylinder is corrected and adjusted again until the upper screen and the lower screen accurately reach the horizontal position.
In a word, adopt this embodiment both properly to solve the material that the slope leads to around the grain harvester and piled up smooth difficult problem, compromise again and solved the material skew of the slope about the grain harvester and piled up the problem, effectively avoided the cleaning loss that consequently leads to, show the efficiency and the operation effect that have improved the grain harvest operation, especially are suitable for the hilly fields piece of different slopes.
Claims (5)
1. a self-adaptive cleaning device of a grain harvester comprises a shaking plate (3) positioned below a concave plate sieve (4), a vibrating sieve (2) connected with the output end of the shaking plate, and a fan (1) positioned at the input end of a self-balancing vibrating sieve; a fan belt wheel (9) is arranged on a rotating shaft of the fan, and the fan belt wheel is in transmission connection with a driving belt wheel through a V-belt (10); the method is characterized in that:
One side of the driving belt wheel is provided with a fixed pulley sheet (1303) coupled with a rotary power source, the other side of the driving belt wheel is provided with a sliding pulley sheet (1302) sleeved on a shaft sleeve of the fixed pulley sheet in a hollow mode, the outer end of the sliding pulley sheet is connected with the middle of an adjusting crutch (12), one end of the adjusting crutch is hinged to a fixed support (15), the other end of the adjusting crutch is hinged to one end of a linkage rod (16), and the other end of the linkage rod is hinged to a thread block (21); the thread block and an axially constrained driving threaded rod (20) form a screw pair, and the driving threaded rod is in transmission connection with an adjusting motor (25);
One side of the fan belt wheel is a fixed belt wheel sheet (902) fixedly connected with the rotating shaft, the other side of the fan belt wheel is a sliding belt wheel sheet (903) movably sleeved on a shaft sleeve of the fixed belt wheel sheet, and the sliding belt wheel sheet is provided with a spring (904) enabling the sliding belt wheel sheet to tend to be close to the fixed belt wheel sheet.
2. The adaptive cleaning plant of a grain harvester according to claim 1, characterized in that: the middle part and the lower end of a groove-shaped main body of the vibrating screen are hinged with the upper end of a swinging crutch (29) of the frame, and an eccentric wheel (31) driven by a power source in the middle of the swinging crutch forms a crank rocker mechanism through a connecting arm (30); the front end of the groove-shaped main body is hinged with the lower end of a connecting rod (28) of which the middle part is hinged to the rack, the upper end of the connecting rod is hinged with the middle bottom of a shaking plate, and one end of the shaking plate is hinged to the rack through a swinging rod (32).
3. A grain harvester adaptive cleaning plant according to claim 2, characterized in that: the outer end of the sliding pulley piece is provided with a bearing with an outer ring tightly matched and an inner ring loosely matched, and the ring in the middle of the adjusting crank is correspondingly contacted with the inner ring of the bearing.
4. A self-adaptive cleaning device of a grain harvester according to claim 3, characterized in that: the threaded block extends out of a sliding supporting block with a unthreaded hole, and the unthreaded hole and a polished rod at the end part of the driving threaded rod form a sliding pair.
5. A self-adaptive cleaning device of a grain harvester according to claim 4, characterized in that: the vibrating screen comprises an upper screen and a lower screen which are supported in a groove-shaped main body, the front parts of the upper screen and the lower screen are overlapped up and down, and the rear part of the lower screen is longer than the upper screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920273958.6U CN209732051U (en) | 2019-03-05 | 2019-03-05 | Self-adaptive cleaning device of grain harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920273958.6U CN209732051U (en) | 2019-03-05 | 2019-03-05 | Self-adaptive cleaning device of grain harvester |
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| Publication Number | Publication Date |
|---|---|
| CN209732051U true CN209732051U (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920273958.6U Withdrawn - After Issue CN209732051U (en) | 2019-03-05 | 2019-03-05 | Self-adaptive cleaning device of grain harvester |
Country Status (1)
| Country | Link |
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| CN (1) | CN209732051U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109716937A (en) * | 2019-03-05 | 2019-05-07 | 农业农村部南京农业机械化研究所 | A kind of adaptive cleaning plant of grain harvesting machine |
-
2019
- 2019-03-05 CN CN201920273958.6U patent/CN209732051U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109716937A (en) * | 2019-03-05 | 2019-05-07 | 农业农村部南京农业机械化研究所 | A kind of adaptive cleaning plant of grain harvesting machine |
| CN109716937B (en) * | 2019-03-05 | 2024-04-19 | 农业农村部南京农业机械化研究所 | Self-adaptive cleaning device of grain harvester |
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Granted publication date: 20191206 Effective date of abandoning: 20240419 |