CN106900424A - A kind of greenhouse curtain-rolling machine deviation correcting device and method for correcting error - Google Patents
A kind of greenhouse curtain-rolling machine deviation correcting device and method for correcting error Download PDFInfo
- Publication number
- CN106900424A CN106900424A CN201710063261.1A CN201710063261A CN106900424A CN 106900424 A CN106900424 A CN 106900424A CN 201710063261 A CN201710063261 A CN 201710063261A CN 106900424 A CN106900424 A CN 106900424A
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- China
- Prior art keywords
- shutter
- deviation correcting
- roller shutter
- correcting device
- detecting device
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/22—Shades or blinds for greenhouses, or the like
- A01G9/227—Shades or blinds for greenhouses, or the like rolled up during non-use
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Abstract
A kind of greenhouse curtain-rolling machine deviation correcting device and method for correcting error, the deviation correcting device include shutter deviation correcting device, shutter main shaft, tail support, adjusting rod, correction leading screw, correction motor, offset detecting device.The roller shutter migration result that shutter deviation correcting device is detected according to offset detecting device calculates the appropriate distance of shutter main shaft and each section of adjusting rod and then controls feed screw nut to drive adjusting rod to be moved up and down to appropriate location according to institute's result of calculation.The method for correcting error is implemented to adjust the position of greenhouse rolling blind using deviation correcting device, it is ensured that the thickness of roller shutter and fixation, the moment ensure that the situation in greenhouse reaches perfect condition.
Description
Technical field
The present invention relates to warmhouse booth, particularly greenhouse curtain-rolling machine deviation correcting device and method for correcting error.
Background technology
In the production management of agricultural greenhouse, every morning is required for using roller shutter in the case where sunshine meets certain condition
Roller shutter is received ceiling by machine, and roller shutter is put into canopy bottom with shutter when illumination is less than certain condition in the afternoon.Due to roller shutter
Often rolled and put down so can deform；The weather conditions on the same day also can to a certain degree influence the thickness of roller shutter, such as
Snow rain frost etc..Thickness difference or the roller shutter for having deformed can shift during being rolled-up, and offset conference
The work of roller shutter is influenceed, What is more can cause industrial accident, therefore need correction.
Conventional correction mode is always artificial control, that is, after finding that roller shutter shifts, roller shutter is re-applied to canopy bottom,
Choose the thickness and fixed form of appropriate position adjustment roller shutter on the roller shutter major axis of shutter, this mode being capable of necessarily journey
Solve problem on degree, but often there is the situation that correction is not enough or correction is excessive.So man's activity is very big, difference can be subject to
People is different due to experience, muscle power, weather conditions different operating, as a result different.Improper operation for a long time can prevent roller shutter from normal
Pack up and put down.Shutter is shifted, or even damaged；The distortion of roller shutter major axis, bending, roller shutter tear, pull open canopy film.
The content of the invention
The present invention be directed to problem above, there is provided it is a kind of can be automatically according to the warmhouse booth of roller shutter drift condition real-time adjustment
Shutter deviation correcting device and method for correcting error, make skew not accumulate, and do not expand, and not repeatedly, can to greatest extent solve artificial shadow
Ring, prevent man's activity cause to shutter, roller shutter major axis, canopy film, roller shutter damage.
The purpose of the present invention is realized by following scheme：
A kind of greenhouse curtain-rolling machine deviation correcting device, it is characterised in that including：Shutter deviation correcting device, roller shutter owner
Axle, tail support, adjusting rod, correction leading screw, correction motor, offset detecting device；Wherein, the shutter main shaft and the tail
Portion's support connection, the first end of the adjusting rod is arranged on the tail support in articulated manner, and the of the adjusting rod
Two ends are provided with nut, and the nut is set on the correction leading screw, as the correction motor drives the correction leading screw
Rotation, be set in it is described correction leading screw on the nut rotation, thus drive second end of the adjusting rod upper and lower
It is mobile.
Preferably, the shutter deviation correcting device control the adjusting rod, the correction leading screw, the correction motor with
And the work of the offset detecting device.
Preferably, the shutter deviation correcting device is communicated to connect with the offset detecting device, is received from described inclined
Move the signal of detection means；And computing device is provided with the shutter deviation correcting device, for calculating the adjusting rod
Second end needs mobile displacement.
Preferably, the migration result that the shutter deviation correcting device is detected according to the offset detecting device, calculates
Second end of the adjusting rod needs mobile displacement.
Preferably, the offset detecting device is set and the lower end of the offset detecting device and the roller shutter near roller shutter
Owner's axle position is in same horizontal line, and the measurement bar of the offset detecting device exists around the pivotal axis for setting on a horizontal
Always fitted under the active force of initial tension of spring roller shutter side.
Preferably, with the angle of the shutter main shaft there are four kinds of states in the measurement bar of the offset detecting device：
Roller shutter is not rolled to when on the shutter main shaft, and the offset detecting device is in the presence of initial tension of spring to roller shutter one
Roll tiltedly, the offset detecting device is a with the angle of the shutter；The offset detection dress when roller shutter is not rolled up inclined
It is b to put with the angle of the shutter main shaft；When roller shutter rolls up inclined to the right, the angle of offset detecting device and the shutter main shaft
It is c to spend；When roller shutter is rolled up inclined to the left, the offset detecting device is d with the angle of the shutter main shaft；According to using public
Formula (1) can calculate the side-play amount of roller shutter：
N=r ' (tan (a-90 °)-tan (| α -90 ° |)) (1)
Wherein α is angle c or angle d；When roller shutter volume is inclined, roller shutter is pullled diamondwise, r ' by original standard rectangular
Be the height of the rhombus, namely the relatively thin one end of roller shutter radius；
And wherein, the hypotenuse length of side r of the rhombus is then drawn by formula (2) counter pushing away：
Also, it is r-r ' that second end of the adjusting rod needs mobile displacement.
Preferably, above-mentioned angle a, b, c, d digital angle sensor are measured.
The invention further relates to a kind of method rectified a deviation using above-mentioned greenhouse curtain-rolling machine deviation correcting device, its feature exists
In the method comprises the following steps：
A. before shutter starts roller shutter, the shutter deviation correcting device records the measurement of the offset detecting device
The angle of bar and the shutter main shaft；
B. after shutter is started working, the side-play amount of roller shutter is sent to the shutter and entangled by the offset detecting device
Inclined controller；
C. second end that described shutter deviation correcting device calculates adjusting rod needs mobile displacement；
D. described shutter deviation correcting device starts correction motor, and correction motor drives correction leading screw to rotate, thus makes
The nut up and down motion that second end of adjusting rod is arranged is obtained, is thus driven and moved down on second end of the adjusting rod
The displacement moved the need for being calculated in dynamic step C.
Preferably, the offset detecting device is every the 5-10 minutes measurement bar to the offset detecting device and the volume
The angle of curtain owner's axle detected, to guarantee to adjust at any time the situation of roller shutter.
Preferably, the correction motor is direct current generator or alternating current generator.
Compared with prior art, the real time status that the present invention is measured according to detection means control to adjust device precise motion,
Rectify a deviation so as to quantify and accurately, it is to avoid regulation deficiency or accommodative excess cause the secondary damage to equipment and greenhouse.
Brief description of the drawings
Fig. 1 is the primary structure figure of shutter deviation correcting device.
Fig. 2 is shutter deviation correcting device working state schematic representation.
Roller shutter force diagram when Fig. 3 is inclined shutter volume.
Roller shutter deformation pattern when Fig. 4 is inclined shutter volume.
Fig. 5 is three views of its adjusting rod of shutter deviation correcting device.
Specific embodiment
Below in conjunction with specific embodiment, the invention will be further described：
Fig. 1 show the primary structure of greenhouse curtain-rolling machine deviation correcting device of the invention.The deviation correcting device includes：Roller shutter
Machine deviation correcting device 1, shutter main shaft 2, tail support 3, adjusting rod 4, correction leading screw 5, correction motor 6, offset detecting device
7.The roller shutter migration result that shutter deviation correcting device 1 is detected according to offset detecting device 7, calculates the one end of adjusting rod 4
Reasonable displacement.Then error correct motor 6 is rotated, and drives correction leading screw 5 to rotate, and feed screw nut is driven on adjusting rod 4
Lower movement, reaches precalculated position.Wherein shutter deviation correcting device 1 control adjusting rod 4, correction leading screw 5, correction motor 6 and partially
The work of detection means 7 is moved, and is communicated to connect with offset detecting device 7, receive the signal from offset detecting device 7.Skew
Detection means 7 is set near roller shutter and the lower end of offset detecting device 7 is located in same horizontal line with shutter main shaft 2, and partially
The measurement bar for moving detection means 7 can always fit around the pivotal axis for setting on a horizontal under the pre-tensioner active force of spring
Roller shutter side, thus the measurement bar of offset detecting device 7 form different angles from shutter main shaft 2.Offset detecting device 7 will
Measured different angle signals are sent to shutter deviation correcting device 1.Shutter main shaft 2 is connected with tail support 3, roller shutter
It is wrapped on shutter main shaft 2 and adjusting rod 4, with the rotation of shutter main shaft 2, roller shutter folding and unfolding is realized to illumination in greenhouse
Regulation.The first end of adjusting rod 4 is arranged on tail support 3 in hinged way, and the second end of adjusting rod is provided with nut, the spiral shell
Mother set be located at correction leading screw 5 on, with correction motor 6 receive deviation correcting device 1 control signal and drive correction leading screw 5 rotation
Turn, be set in the nut rotation on correction leading screw 5, thus drive the second end of adjusting rod 4 to move up and down, reach precalculated position.
After second end of adjusting rod 4 reaches certain position, main shaft 2 and adjusting rod 4 formed it is trapezoidal cause roller shutter to deform upon, roller shutter is straight
The larger one end in footpath inclines towards the other end, and under gravity, it is consistent that roller shutter is adjusted to two ends diameter, so as to realize
Correction.Adjusting rod 4 preferably uses elastic, malleable material to constitute, or spring long, to ensure on the end of adjusting rod 4 second
When lower mobile, adjusting rod 4 will not be broken because of pulling force.
In order to further illustrate the application deviation correcting device, the deviation correcting device to the application and its correction in conjunction with accompanying drawing 2-5
Method is illustrated.
Fig. 2 is that shutter surveys deflection device working state schematic representation.When roller shutter is not rolled on main shaft, offset detection dress
Put 7 to be inclined to roller shutter side in the presence of initial tension of spring, as shown in Fig. 2-a, offset detecting device 7 is with the angle of main shaft
a；When roller shutter is normally rolled onto on main shaft, when not rolled up inclined, as shown in Fig. 2-b, offset detecting device 7 is with the angle of main shaft
b；When roller shutter is rolled up inclined to the right, as shown in fig. 2-c, device is c with the angle of main shaft；When roller shutter is rolled up inclined to the left, such as
Shown in Fig. 2-d, offset detecting device 7 is d with the angle of main shaft；Angle a, b, c, d digital angle sensor are measured.Using public affairs
Formula (1) can calculate side-play amount：
N=r ' (tan (a-90 °)-tan (| α -90 ° |)) (1)
Wherein α is angle c or angle d；When roller shutter volume is inclined, roller shutter is pullled diamondwise, r ' by original standard rectangular
Be the height of the rhombus, namely the relatively thin one end of roller shutter radius.
In order to illustrate above mentioned problem, Fig. 3 is further may refer to.Roller shutter force diagram when Fig. 3 is inclined shutter volume.Work as roller shutter
When rolling up inclined, there is difference, r as shown in Figure 3 in the thickness for rolling up the roller shutter two ends on main shaft>R ', according to circumference formula, volume
Roller shutter that the thick one end every revolution of curtain is rolled one end thinner than roller shutter is more, thus forms a kind of from thick one end to thin
The state that one end is pullled, the direction of the power pullled is as shown in f in Fig. 3.
Roller shutter deformation pattern when Fig. 4 is inclined shutter volume.The two ends diameter deviation of roller shutter major axis is bigger, and the roller shutter rolled is got over
Many, axial force will be bigger, rolls up inclined phenomenon more serious.As shown in figure 4, when roller shutter volume is inclined, roller shutter is by original standard rectangular
Diamondwise is pullled, the height of rhombus is the radius r ' of the relatively thin one end of roller shutter, and the short side of rhombus is the half of the thicker one end of roller shutter
Footpath r.Thus the offset distance being calculated isAs noted previously, as the radius of the relatively thin one end of r ' roller shutters
R ', can be determined by survey tool, and n values can be determined to draw by formula (1) as described above.Accordingly, then can basisRetrodict out r values, r-r ' represents that the nut one end of adjusting rod 4 needs mobile displacement in Fig. 5.
Fig. 5 show situation of the adjusting rod in diverse location, a) represents adjusting rod 4 in centre position；B) adjusting rod 4 is represented
Nut one end, namely adjusting rod 4 the second end, positioned at left end extreme position, c) represent the end of adjusting rod 4 second in extreme right position
Put.By adjusting the diverse location at the end of adjusting rod second, roller shutter due to the differing tilt angles of adjusting rod 4, in the effect of gravity
The became uneven of entire volume curtain is lowered, the consistent state of the roller shutter two ends radius being rolled-up finally is remained to.
According to another aspect of the present invention, one kind is further related to be rectified a deviation using above-mentioned greenhouse curtain-rolling machine deviation correcting device
Method, wherein the method comprises the following steps：
A. before shutter starts roller shutter, shutter deviation correcting device 1 records the measurement bar of the offset detecting device 7
With the angle of shutter main shaft 2；
B. after shutter is started working, the side-play amount of roller shutter is sent to shutter correction control by offset detecting device 7
Device 1；
C. shutter deviation correcting device 1 calculates the displacement at the end of adjusting rod 4 second；
D. shutter deviation correcting device 1 starts correction motor 6, and correction motor 6 drives correction leading screw 5 to rotate, so that
The nut that the end of adjusting rod 4 second is arranged moves up and down, and thus drives the second end of adjusting rod 4 to move up and down into step C institute
The displacement moved the need for calculating.
Preferably, offset detecting device 7 is every the 5-10 minutes measurement bar to offset detecting device 7 and shutter main shaft 2
Angle detected, to guarantee to adjust at any time the situation of roller shutter.
Preferably, the correction motor is direct current generator or alternating current generator.
Although the present invention is described by reference to preferred embodiment, those of ordinary skill in the art should
Work as understanding, the description of above-described embodiment can be not limited to, in the range of claims, can make each in form and details
Plant change.
Claims (10)
1. a kind of greenhouse curtain-rolling machine deviation correcting device, it is characterised in that including：Shutter deviation correcting device, shutter main shaft,
Tail support, adjusting rod, correction leading screw, correction motor, offset detecting device；Wherein, the shutter main shaft and the afterbody
Support connection, the first end of the adjusting rod is arranged on the tail support in articulated manner, and the second of the adjusting rod
End is provided with nut, and the nut is set on the correction leading screw, as the correction motor drives the correction leading screw
Rotation, is set in the nut rotation on the correction leading screw, thus drives and moved down on second end of the adjusting rod
It is dynamic.
2. deviation correcting device according to claim 1, it is characterised in that the shutter deviation correcting device controls the regulation
The work of bar, the correction leading screw, the correction motor and the offset detecting device.
3. deviation correcting device according to claim 2, it is characterised in that the shutter deviation correcting device and the skew inspection
Device communication connection is surveyed, the signal from the offset detecting device is received；And be provided with the shutter deviation correcting device
Computing device, second end for calculating the adjusting rod needs mobile displacement.
4. deviation correcting device according to claim 3, it is characterised in that the shutter deviation correcting device is according to the skew
The migration result that detection means is detected, second end for calculating the adjusting rod needs mobile displacement.
5. deviation correcting device according to claim 4, it is characterised in that the offset detecting device is set and institute near roller shutter
State offset detecting device lower end and the shutter main shaft be located at same horizontal line on, and the offset detecting device measurement
Bar is always fitted roller shutter side under the active force of initial tension of spring around setting pivotal axis on a horizontal.
6. deviation correcting device according to claim 5, it is characterised in that the measurement bar of the offset detecting device and the volume
There are four kinds of states in the angle of curtain owner's axle：When roller shutter is not rolled on the shutter main shaft, the offset detection dress
Put and inclined to roller shutter side in the presence of initial tension of spring, the offset detecting device is a with the angle of the shutter；When
The offset detecting device and the angle of the shutter main shaft are b when roller shutter is not rolled up inclined；When roller shutter rolls up inclined to the right, partially
It is c that detection means is moved with the angle of the shutter main shaft；When roller shutter to the left by roll up it is inclined when, the offset detecting device with it is described
The angle of shutter main shaft is d；According to the side-play amount that roller shutter can be calculated using formula (1)：
N=r ' (tan (a-90 °)-tan (| α -90 ° |)) (1)
Wherein α is angle c or angle d；When roller shutter volume is inclined, roller shutter is pullled diamondwise by original standard rectangular, and r ' is should
The height of rhombus, namely the relatively thin one end of roller shutter radius；
And wherein, the length of short sides r of the rhombus is then drawn by formula (2) counter pushing away：
Also, it is r-r ' that second end of the adjusting rod needs mobile displacement.
7. deviation correcting device according to claim 6, it is characterised in that above-mentioned angle a, b, c, d digital angle sensor
Measure.
8. a kind of method that greenhouse curtain-rolling machine deviation correcting device using any one of claim 1-7 is rectified a deviation,
Characterized in that, the method comprises the following steps：
A. before shutter starts roller shutter, the shutter deviation correcting device record the measurement bar of the offset detecting device with
The angle of the shutter main shaft；
B. after shutter is started working, the side-play amount of roller shutter is sent to the shutter correction control by the offset detecting device
Device processed；
C. second end that described shutter deviation correcting device calculates adjusting rod needs mobile displacement；
D. described shutter deviation correcting device starts correction motor, and correction motor drives correction leading screw to rotate, so that adjusting
The nut that second end of pole is arranged moves up and down, and thus drives second end of the adjusting rod to move up and down step
The displacement calculated in rapid C.
9. method for correcting error according to claim 8, it is characterised in that the offset detecting device is every 5-10 minutes to institute
The measurement bar and the angle of the shutter main shaft for stating offset detecting device are detected, to guarantee to adjust roller shutter at any time
Situation.
10. method for correcting error according to claim 9, it is characterised in that the correction motor is direct current generator or exchange
Motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710063261.1A CN106900424A (en) | 2017-02-03 | 2017-02-03 | A kind of greenhouse curtain-rolling machine deviation correcting device and method for correcting error |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710063261.1A CN106900424A (en) | 2017-02-03 | 2017-02-03 | A kind of greenhouse curtain-rolling machine deviation correcting device and method for correcting error |
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| Publication Number | Publication Date |
|---|---|
| CN106900424A true CN106900424A (en) | 2017-06-30 |
Family
ID=59208826
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710063261.1A Pending CN106900424A (en) | 2017-02-03 | 2017-02-03 | A kind of greenhouse curtain-rolling machine deviation correcting device and method for correcting error |
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| CN (1) | CN106900424A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111108980A (en) * | 2020-01-03 | 2020-05-08 | 天津市农业科学院信息研究所 | Greenhouse roller shutter operation control system and control method thereof |
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| JPH11200273A (en) * | 1998-01-06 | 1999-07-27 | Oji Paper Co Ltd | Stretch line-bending apparatus of press felt and bending of stretch line |
| CN201321303Y (en) * | 2008-12-11 | 2009-10-07 | 杭州电子科技大学 | Deviation rectifying device |
| CN202068788U (en) * | 2011-01-18 | 2011-12-14 | 张健 | Telescopic rocker curtain rolling machine |
| CN202152234U (en) * | 2011-06-22 | 2012-02-29 | 湖北联合天诚防伪技术股份有限公司 | Coil stock film strip rewinding machine for high-sensitivity deviation rectifying mechanism |
| CN102502305A (en) * | 2011-09-21 | 2012-06-20 | 奇瑞汽车股份有限公司 | Correction adjustment device |
| CN202283794U (en) * | 2011-11-09 | 2012-06-27 | 陕西科技大学 | Automatic correction device on plastic packaging bag production line |
| CN202680119U (en) * | 2012-07-27 | 2013-01-23 | 临泽县睿德科技有限责任公司 | Rectification roller shutter device of greenhouse |
| CN205274835U (en) * | 2016-01-12 | 2016-06-01 | 北京远大洪雨防水材料有限责任公司 | Coiled material tectorial membrane mechanism of rectifying |
| CN205674655U (en) * | 2016-05-19 | 2016-11-09 | 苏州宏远电子有限公司 | Laminating machine rewinding deviation correcting device |
| CN205772249U (en) * | 2016-05-26 | 2016-12-07 | 济南森峰科技有限公司 | A kind of pay-off of automatic deviation correction |
-
2017
- 2017-02-03 CN CN201710063261.1A patent/CN106900424A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11200273A (en) * | 1998-01-06 | 1999-07-27 | Oji Paper Co Ltd | Stretch line-bending apparatus of press felt and bending of stretch line |
| CN201321303Y (en) * | 2008-12-11 | 2009-10-07 | 杭州电子科技大学 | Deviation rectifying device |
| CN202068788U (en) * | 2011-01-18 | 2011-12-14 | 张健 | Telescopic rocker curtain rolling machine |
| CN202152234U (en) * | 2011-06-22 | 2012-02-29 | 湖北联合天诚防伪技术股份有限公司 | Coil stock film strip rewinding machine for high-sensitivity deviation rectifying mechanism |
| CN102502305A (en) * | 2011-09-21 | 2012-06-20 | 奇瑞汽车股份有限公司 | Correction adjustment device |
| CN202283794U (en) * | 2011-11-09 | 2012-06-27 | 陕西科技大学 | Automatic correction device on plastic packaging bag production line |
| CN202680119U (en) * | 2012-07-27 | 2013-01-23 | 临泽县睿德科技有限责任公司 | Rectification roller shutter device of greenhouse |
| CN205274835U (en) * | 2016-01-12 | 2016-06-01 | 北京远大洪雨防水材料有限责任公司 | Coiled material tectorial membrane mechanism of rectifying |
| CN205674655U (en) * | 2016-05-19 | 2016-11-09 | 苏州宏远电子有限公司 | Laminating machine rewinding deviation correcting device |
| CN205772249U (en) * | 2016-05-26 | 2016-12-07 | 济南森峰科技有限公司 | A kind of pay-off of automatic deviation correction |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111108980A (en) * | 2020-01-03 | 2020-05-08 | 天津市农业科学院信息研究所 | Greenhouse roller shutter operation control system and control method thereof |
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