CN202335345U - Gear clearance compensation device for air door of bulk curer controller - Google Patents
Gear clearance compensation device for air door of bulk curer controller Download PDFInfo
- Publication number
- CN202335345U CN202335345U CN2011205169592U CN201120516959U CN202335345U CN 202335345 U CN202335345 U CN 202335345U CN 2011205169592 U CN2011205169592 U CN 2011205169592U CN 201120516959 U CN201120516959 U CN 201120516959U CN 202335345 U CN202335345 U CN 202335345U
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- direct current
- gear clearance
- air door
- motor
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Abstract
The utility model discloses a gear clearance compensation device for an air door of a bulk curer controller, and relates to a bulk curer controller. Because a reducing gear has a clearance, even if a direct current motor rotates the same angle, the opening/closing angles of the air door are different, and humidity control deviation is easily increased. The gear clearance compensation device is characterized by comprising a direct current motor current sampling unit; a central processing unit is provided with a gear clearance compensation unit and a time calculation unit which is connected with the direct current motor current sampling unit and the gear clearance compensation unit and is used for calculating the working time of the direct current motor; the gear clearance compensation unit pre-stores a no-load current value of the motor; and when the sampled value acquired by the direct current sampling unit is less than or equal to the no-load current value of the motor, the gear clearance exists during operation of the reducing gear, and the time calculation unit prolongs the working time of the direct current motor to compensate the gear clearance. The air door can be opened/closed at a certain angle accurately, and the air door angle detection is eliminated.
Description
Technical field
The utility model relates to a kind of bulk curing barn flue-cured tobacco controller.
Background technology
Along with improving constantly with the cured tobacco production organizational form of quality of tobacco changed; Cured tobacco production progressively develops to scale, intensification, specialized direction; China's barn equipment is also being constantly brought forth new ideas and is being developed, and bulk curing barn has become cured tobacco production sustainable development developing direction under the new situation.The bulk curing barn controller need be to the temperature and humidity control of barn, and wherein, the humidity control principle is controlled throttle opening exactly and regulated humidity.The bulk curing barn controller rotates through control direct current generator transmission reduction gearing, makes and closes and open as air door.When the preceding run action of air door (open or close) with when run action is inequality next time; Because the gapped existence of reduction gearing; Even direct current generator rotates identical angle; Air door opening/closing angle is also inequality, and this is very unfavorable to humidity control, causes the humidity control deviation obviously to increase easily.
The utility model content
The technical problem that the utility model will solve and the technical assignment of proposition are that the prior art scheme is improved and improved, and are provided for the air door gear clearance compensation arrangement of bulk curing barn controller, to reach the low-cost purpose of accurately opening throttle opening.For this reason, the utility model is taked following technical scheme.
The air door gear clearance compensation arrangement that is used for the bulk curing barn controller; Comprise Industrial Frequency Transformer, the rectification filtering unit that is connected with Industrial Frequency Transformer, the electric-motor drive unit that is connected with the rectification filtering unit output, the direct current generator that links to each other with electric-motor drive unit, be connected the reduction gearing that is used to drive air door with direct current generator, linking to each other with electric-motor drive unit is used to control the central processing unit of machine operation; It is characterized in that: also comprise the direct current generator current sampling unit that output links to each other with central processing unit; Described central processing unit is provided with the sampled value that obtains according to the direct current generator current sampling unit and confirms whether reduction gearing exists the gear clearance compensating unit of gear clearance when turning round, linking to each other with direct current generator current sampling unit and gear clearance compensating unit is used to calculate the time calculating unit of direct current generator working time; The described gear clearance compensating unit empty load of motor current value that prestores; When the sampled value of direct current sampling unit acquisition is less than or equal to the empty load of motor current value; Judge that then there is gear clearance in the reduction gearing running, time calculating unit prolongs the direct current generator working time with the compensation gear clearance.The reduction gearing that the driven by motor air door rotates is during the gap, and its direct current generator current ratio is less, utilizes this characteristic; Whether be in during the gap or between the on-stream period of normal transmission air door in the time of can judging this operation through sampling direct current generator electric current; Thereby accurately opening/closing air door certain angle has omitted the detection to the air door angle; Reduce cost, improve the stability and the reliability of work.
As the further of technique scheme improved and replenish, the utility model also comprises following additional technical feature.
Described central processing unit is established timer regularly the current value of direct current generator is sampled to confirm the gear clearance make-up time.
Described central processing unit connection one is used to obtain the rectifying and wave-filtering voltage sample unit of load voltage; Described central processing unit is provided with the preset unit of voltage compensation; The magnitude of voltage that the voltage sample module is obtained is compared with the magnitude of voltage that the preset unit of voltage compensation is set; When if actual voltage value is greater than or less than the predeterminated voltage value, reduce or increase of the influence of the running time of motor with bucking voltage.
Described central processing unit is provided with the preset unit of locked rotor current; During current value that the current value that obtains when the current sample module is set more than or equal to the preset unit of locked rotor current, central processing unit control electric-motor drive unit stops to realize for the motor power supply stall of motor.
Beneficial effect: the reduction gearing that drives the air door rotation is during the gap, and its direct current generator current ratio is less, utilizes this characteristic; Whether be in during the gap or between the on-stream period of normal transmission air door in the time of can judging this operation through sampling direct current generator electric current; Thereby accurately opening/closing air door certain angle has omitted the detection to the air door angle; Reduce cost, improve the stability and the reliability of work.
Description of drawings
Fig. 1 is the utility model circuit block diagram.
Fig. 2 is the utility model circuit diagram.
The specific embodiment
Below in conjunction with Figure of description the technical scheme of the utility model is done further detailed description.
As shown in Figure 1; The utility model comprises Industrial Frequency Transformer, the rectification filtering unit that is connected with Industrial Frequency Transformer, the electric-motor drive unit that is connected with the rectification filtering unit output, the direct current generator that links to each other with electric-motor drive unit, is connected the reduction gearing that is used to drive air door with direct current generator; The central processing unit that is used to control machine operation, the direct current generator current sampling unit that output links to each other with central processing unit link to each other with electric-motor drive unit; Described central processing unit is provided with the sampled value that obtains according to the direct current generator current sampling unit and confirms whether reduction gearing exists the gear clearance compensating unit of gear clearance when turning round, linking to each other with direct current generator current sampling unit and gear clearance compensating unit is used to calculate the time calculating unit of direct current generator working time; The described gear clearance compensating unit empty load of motor current value that prestores; When the sampled value of direct current sampling unit acquisition is less than or equal to the empty load of motor current value; Judge that then there is gear clearance in the reduction gearing running, time calculating unit prolongs the direct current generator working time with the compensation gear clearance.Described central processing unit is established timer regularly the current value of direct current generator is sampled to confirm the gear clearance make-up time.Central processing unit connection one is used to obtain the rectifying and wave-filtering voltage sample unit of load voltage; Described central processing unit is provided with the preset unit of voltage compensation; The magnitude of voltage that the voltage sample module is obtained is compared with the magnitude of voltage that the preset unit of voltage compensation is set; When if actual voltage value is greater than or less than the predeterminated voltage value, reduce or increase of the influence of the running time of motor with bucking voltage.Described central processing unit is provided with the preset unit of locked rotor current; During current value that the current value that obtains when the current sample module is set more than or equal to the preset unit of locked rotor current, central processing unit control electric-motor drive unit stops to realize for the motor power supply stall of motor.
Be used for the air door gear clearance compensation method of bulk curing barn controller, it may further comprise the steps:
1) central processing unit is according to the instruction running aperture calculating direct current generator conduction time of air door;
2) central processing unit is controlled the running time of the forward or reverse of direct current generator energising air door conduction time by the direct current generator that calculates;
3) rotate the starting stage at motor, when separated motor DC is sampled, when being less than or equal to the empty load of motor current value, judge that there is gear clearance in the reduction gearing running, prolong the direct current generator working time to compensate gear clearance as if the sample rate current value.
Wherein, central processing unit is established a plurality of by timer-operated sampling time point in the running time that step 2 obtains; During central processing unit control electric motor starting, start timer simultaneously; Each timer timing then, the current value of sampling direct current generator, if when the current value of sampling is greater than or equal to the locked rotor current value, the stall of central processing unit control motor; If the sample rate current value is less than or equal to when setting empty load of motor revolution electric current value, prolong motor running time, the time interval that the time of prolongation put for this sampling time point and last sampling time.The locked rotor current value is more than 30 times of gear clearance revolution electric current value, preferred 40 times.
The circuit of the utility model can be as shown in Figure 2; Comprise Industrial Frequency Transformer T1, rectifier D1, filter capacitor C4, C5, power management chip U3, the first relay R Y2, the second relay R Y4, direct current generator M1, current sampling resistor R9, divider resistance R14, R15, CPU, air door; Industrial Frequency Transformer T1 is connected with rectifier D1, and rectifier D1 links to each other with filter capacitor C4, C5, power management chip U3, the first relay R Y2, the second relay R Y4 contact and divider resistance R15 respectively; The contact other end of the second relay R Y4 is connected with the contact 3 of relay R Y2, contact 8; The contact 4 of the first relay R Y2 is connected with the contact 7 of the first relay R Y2; The contact 5 of the first relay R Y2, contact 6 are connected with the two ends of direct current generator M1 respectively; Divider resistance R15 one end is connected with the divider resistance R14 of ground connection; The divider resistance R15 other end enters into the A/D2 of CPU; Resistance R 10 is connected with the current sampling resistor R9 of an end ground connection, the current sample divider resistance R12 of an end ground connection, the resistance R 13 that an end links to each other with the A/D1 of CPU respectively; The coil of the coil of the first relay R Y2, the second relay R Y4 linked to each other with CPU with the rotating and the working time of control motor, and the A/D1 of CPU is used for the electric current of motor is sampled, and the A/D2 of CPU is used for the voltage of motor is sampled.
Its course of work is following:
1) DC voltage of the current input dc power machine of sampling;
2) obtain the angle that current needs are opened through control program;
3) according to step 1), step 2) information calculations that obtains goes out direct current generator conduction time, and calculate a plurality of time interval T2 of direct current generator according to timer T1;
4) according to the control program needs to relay R Y2, relay R Y4 coil charges through the direct current generator energising, make the just commentaries on classics/counter-rotating of air door, write down this air door rotation direction, and startup timer T1;
5) each timer T1 time then; The current value A1 of sampling direct current generator, if when current value A1 is greater than or equal to locked rotor current value A2, T2 puts 0; If current value A1 is less than locked rotor current value A2 and when setting gear clearance revolution electric current value A3, T2 subtracts 1; If current value A1 is less than or equal to when setting gear clearance revolution electric current value A3, the T2 value does not change.If T2 is 0 then to relay R Y2, relay R Y4 coil blackout, makes direct current generator stop power supply that air door shuts down.Through sampling, can reduce of the influence of the height of voltage to door opening to voltage.
Claims (4)
1. the air door gear clearance compensation arrangement that is used for the bulk curing barn controller; Comprise Industrial Frequency Transformer, the rectification filtering unit that is connected with Industrial Frequency Transformer, the electric-motor drive unit that is connected with the rectification filtering unit output, the direct current generator that links to each other with electric-motor drive unit, be connected the reduction gearing that is used to drive air door with direct current generator, linking to each other with electric-motor drive unit is used to control the central processing unit of machine operation; It is characterized in that: also comprise the direct current generator current sampling unit that output links to each other with central processing unit; Described central processing unit is provided with the sampled value that obtains according to the direct current generator current sampling unit and confirms whether reduction gearing exists the gear clearance compensating unit of gear clearance when turning round, linking to each other with direct current generator current sampling unit and gear clearance compensating unit is used to calculate the time calculating unit of direct current generator working time; The described gear clearance compensating unit empty load of motor current value that prestores; When the sampled value of direct current generator current sampling unit acquisition is less than or equal to the empty load of motor current value; Judge that then there is gear clearance in the reduction gearing running, time calculating unit prolongs the direct current generator working time with the compensation gear clearance.
2. the air door gear clearance compensation arrangement that is used for the bulk curing barn controller according to claim 1 is characterized in that: described central processing unit is established timer regularly the current value of direct current generator is sampled to confirm the gear clearance make-up time.
3. the air door gear clearance compensation arrangement that is used for the bulk curing barn controller according to claim 2; It is characterized in that: described central processing unit connection one is used to obtain the rectifying and wave-filtering voltage sample unit of load voltage; Described central processing unit is provided with the preset unit of voltage compensation; The magnitude of voltage that the voltage sample module is obtained is compared with the magnitude of voltage that the preset unit of voltage compensation is set; When if actual voltage value is greater than or less than the predeterminated voltage value, reduce or increase of the influence of the running time of motor with bucking voltage.
4. the air door gear clearance compensation arrangement that is used for the bulk curing barn controller according to claim 3; It is characterized in that: described central processing unit is provided with the preset unit of locked rotor current; During current value that the current value that obtains when the current sample module is set more than or equal to the preset unit of locked rotor current, central processing unit control electric-motor drive unit stops to realize for the motor power supply stall of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205169592U CN202335345U (en) | 2011-12-13 | 2011-12-13 | Gear clearance compensation device for air door of bulk curer controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205169592U CN202335345U (en) | 2011-12-13 | 2011-12-13 | Gear clearance compensation device for air door of bulk curer controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202335345U true CN202335345U (en) | 2012-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205169592U Withdrawn - After Issue CN202335345U (en) | 2011-12-13 | 2011-12-13 | Gear clearance compensation device for air door of bulk curer controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202335345U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102406228A (en) * | 2011-12-13 | 2012-04-11 | 卧龙电气集团股份有限公司 | Air door gear clearance compensation device and method for bulk curing barn controller |
| CN111060053A (en) * | 2019-12-30 | 2020-04-24 | 武汉理工大学 | Rear axle main reducing gear assembly clearance measuring system and method |
-
2011
- 2011-12-13 CN CN2011205169592U patent/CN202335345U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102406228A (en) * | 2011-12-13 | 2012-04-11 | 卧龙电气集团股份有限公司 | Air door gear clearance compensation device and method for bulk curing barn controller |
| CN102406228B (en) * | 2011-12-13 | 2013-05-29 | 卧龙电气集团股份有限公司 | Air door gear clearance compensation device and method for bulk curing barn controller |
| CN111060053A (en) * | 2019-12-30 | 2020-04-24 | 武汉理工大学 | Rear axle main reducing gear assembly clearance measuring system and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120718 Effective date of abandoning: 20130529 |
|
| RGAV | Abandon patent right to avoid regrant |