CN106970186A - A kind of grain moisture detector of compaction type - Google Patents
A kind of grain moisture detector of compaction type Download PDFInfo
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- CN106970186A CN106970186A CN201710401652.XA CN201710401652A CN106970186A CN 106970186 A CN106970186 A CN 106970186A CN 201710401652 A CN201710401652 A CN 201710401652A CN 106970186 A CN106970186 A CN 106970186A
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Abstract
The invention discloses a kind of grain moisture detector of compaction type, including housing, it is provided with housing by power transmission shaft and rolls module, rolling module includes wide rolling wheel and narrow rolling wheel, and the bearing block of wide rolling wheel is fixedly mounted on a sliding block.The bottom of sliding block is fixed with push pedal, and push pedal is fixed with being laterally located at the adjusting screw rod of housing side, and the side of housing is provided with the screwed hole for being used for being threadedly coupled with adjusting screw rod, and adjusting screw rod one end is fixed with push pedal, and the other end passes through screwed hole, extends to the outside of housing；The chute for being used for installing push pedal is provided with housing, the length of chute is more than the length of push pedal, and width and the push pedal of chute agree with, and the glide direction of sliding block is parallel with the line in the wide rolling wheel center of circle and the narrow rolling wheel center of circle.The present invention is enough to adjust the distance between wide rolling wheel and narrow rolling wheel at any time, increases the use scope of rolling device, has saved cost.
Description
Technical field
The present invention relates to a kind of Moisture Meter, the grain moisture detector of more particularly to a kind of compaction type.
Background technology
In Moisture Meter, its detection module, which is built-in with, rolls module, rolls the setting of module, can more accurately detect institute
Survey the moisture of article.But it is existing roll in module, the position between narrow rolling wheel and wide rolling wheel is permanently fixed not
Become, when detecting the moisture content of material of different-diameter particle, it is necessary to be detected using different Moisture Meters, so as to cause into
This increase, also causes in detection process, and Moisture Meter needs are frequent to vary, and causes constant.
The content of the invention
The technical problems to be solved by the invention there is provided a kind of grain moisture detector of compaction type, the rolling device
The distance between wide rolling wheel and narrow rolling wheel can be adjusted at any time, increase the use scope of rolling device, it is cost-effective.
To achieve these goals, the present invention provides following technical scheme：A kind of grain moisture detector of compaction type, bag
Include housing (1), rolling wheel be provided with by power transmission shaft (2) in the housing (1), the rolling wheel include wide rolling wheel (3) with
And narrow rolling wheel (4), the wide rolling wheel (3) and narrow rolling wheel (4) are rotatably installed in housing by a power transmission shaft (2) respectively
(1) on, wherein the bottom for the power transmission shaft (2) being connected with wide rolling wheel (3) is provided with gear I (5), it is connected with narrow rolling wheel (4)
The bottom of power transmission shaft (2) gear II (6) is installed, the gear I (5) is engaged with gear II (6), and gear II (6) is away from tooth
Engaged with a gear III (7) side of I (5) of wheel；
It is respectively provided with the top of the housing (1) and wide rolling wheel (3) and the mounting hole of narrow rolling wheel (4), institute is installed
State wide rolling wheel (3) to be arranged in mounting hole by bearing (8) and bearing block (9) respectively with narrow rolling wheel (4), wherein installing
The hole side of the mounting hole of narrow rolling wheel (4) is provided with the flange (10) being connected as a single entity with housing (1), the axle of the narrow rolling wheel (4)
Bearing (9) is fixedly mounted on flange (10), and the bearing block (9) of the wide rolling wheel (3) is fixedly mounted on a sliding block (11)
On, the bottom of the sliding block (11) is fixed with push pedal (12), the push pedal (12) and the regulation spiral shell for being laterally located at housing (1) side
Bar (13) is fixed, and the side of the housing (1) is provided with the screwed hole for being used for being threadedly coupled with adjusting screw rod (13), the regulation spiral shell
Bar (13) one end is fixed with push pedal (12), and the other end passes through screwed hole, extends to the outside of housing (1)；Set in the housing (1)
There are the chute (23) for installing push pedal (12), and length of the length more than push pedal (12) of the chute (23), chute
(23) width agrees with push pedal (12), the glide direction of the sliding block (11) and wide rolling wheel (3) center of circle and narrow rolling wheel (4)
The line in the center of circle is parallel；
The gear III (7) is driven by the integral control circuit below housing (1)；
The integral control circuit includes moisture acquisition module, main control module, indicating lamp module, motor drive module, logical
Letter module and the power module powered for foregoing circuit；The data acquisition module is connected with the main control module, for that will adopt
The data collected are sent to main control module analysis, and to obtain the moisture value of cereal to be detected, the power module is for being
The main control module and the data acquisition module provide operating voltage.
As the further optimization of such scheme, the hole side of the screwed hole is installed with an adjusting nut (14),
The adjusting screw rod (13) passes through adjusting nut (14), and is threadedly coupled with adjusting nut (14).
As the further optimization of such scheme, two power transmission shafts (2) are being respectively mounted wide rolling wheel (3) and narrow stone roller
An O-ring seal (15) is fixedly mounted in one end of pinch roller (4).
As the further optimization of such scheme, the wheel rim of the narrow rolling wheel (4) is provided with section notch triangular in shape
(16), two side length of sides of the notch (16) are consistent, and both sides angle is 90 °.
As the further optimization of such scheme, the data acquisition module includes：Current of electric sampling submodule, moisture
Sampling submodule, temperature sampling submodule；
The temperature sampling submodule includes：At least one temperature sensor, the data output of each temperature sensor
Positive pole connects operating voltage by first resistor and passes through the positive input of the first capacitance connection to sign-changing amplifier, the temperature
The data output negative pole of sensor is connected to the positive input of the sign-changing amplifier by RC wave filters, the sign-changing amplifier
Reverse input end is connected with output end；
The moisture collection submodule includes：One end of moisture transducer is connected by electric capacity C32 with the other end, and is passed through
Switching tube Q4 is connected to operating voltage with resistance R66 in parallel；The output end of the switching tube Q4 passes through electric capacity R40 and triode
Q5 colelctor electrode is connected, and the base stage of the triode Q5 passes through resistance and the supply voltage control signal from the main control module
The other end of the connected moisture transducer is connected by resistance R63 with C47, R48 and C38 in parallel, in the R48 and C38
Between be connected with switch module DG419DY pin 2, the pin 3 of the switch module is described by resistance R49, R50, R51
The pin 6 of switch module is connected with the main control module, the data output pins 1 and amplifier module U12's of the switch module
Pin 11 is connected, the positive input phase that the pin 7 of the amplifier module U12 passes through resistance R46, R47 and operational amplifier U9A
Even, the reverse input end of the operational amplifier U9A is connected with output end, the output end of the operational amplifier U9A with it is described
Main control module is connected；
The current of electric sampling submodule includes：Motor power output motor test signal after transformer T1
MOTOR TEST input amplifiers U10B reverse input end, and it is the positive input ground connection of the amplifier U10B, described anti-
The output end that phase input is connected with resistance R39, the amplifier U10B with output end passes through resistance R16's and amplifier U10A
Positive input is connected, and the inverse output terminal of the amplifier U10A is connected by resistance R62 with inverse output terminal, and described defeated
Go out end to be grounded by resistance R61, the output end is connected by resistance R57, R65 with amplifier U9B positive input, described
Amplifier U9B inverting input is connected with output end, and the output end is connected with the main control module；
The main control module by model STM32F103CBT6 singlechip group into.
As the further optimization of such scheme, the motor drive module includes：Relay K3 is in parallel with diode D4
Triode Q3 colelctor electrode is accessed, the anode of the diode D4 is connected with the colelctor electrode of the diode Q3, the diode
D4 negative electrode is connected with operating voltage, the grounded emitter of the anode of the diode D4, the base of the anode of the diode D4
Pole is connected by resistance R32 with the main control module.
As the further optimization of such scheme, the communication module includes：RS485 communication modules, CAN；
The RS485 communication modules include：Communication control chip MAX485 pin 2 is connected with pin 3, and is controlled together with the communication
Coremaking piece MAX485 pin 1 and pin 4 is connected with the main control module, the He of pin 6 of the communication control chip MAX485
Pin 8 exports RS485 signals of communication；
The CAN includes：Communication control chip SN65HVD232 pin 1 and pin 4 and the master control mould
Block is connected, and the pin 6 and pin 7 of the communication control chip SN65HVD232 are earthy to export by resistance R5 and R4 respectively
Signal of communication.
As the further optimization of such scheme, the narrow rolling wheel (4) is between per two adjacent notches (16)
Part is provided with annular knurl (17).
As the further optimization of such scheme, the wide rolling wheel (3) and the bottom centre of narrow rolling wheel (4) lead to respectively
Cross drive link I (18), drive link II (19) to be fixedly connected with power transmission shaft (2), the O-ring seal (15) is located at drive link I
(18), the junction of drive link II (19) and power transmission shaft (2).
As the further optimization of such scheme, the bottom of the drive link I (18) and wide rolling wheel (3) is connected as a single entity.
Using above-mentioned technical proposal, the present invention passes through when needing to adjust the spacing between wide rolling wheel and narrow rolling wheel
The adjusting screw rod of hull outside is turned, due to being connected through a screw thread between the shaft and housing of adjusting screw rod, and adjusting screw rod
End fixed with push pedal, thus rotate adjusting screw rod when, adjusting screw rod can drive push pedal to move left and right, and push pedal then with
Sliding block is moved left and right together, thus realize wide rolling wheel close to or away from narrow rolling wheel, so as to realize wide rolling wheel and narrow stone roller
Spacing between pinch roller, enables rolling device to be applicable the particulate matter with different-diameter, reduces use cost.
Brief description of the drawings
Fig. 1 is the front view of the present invention；
Fig. 2 is the right view of the present invention；
Fig. 3 is the top view of the present invention；
Fig. 4 is Fig. 2 A-A sectional views；
Fig. 5 is assembling schematic diagram of the present invention；
Fig. 6 is the structural representation of narrow rolling wheel of the invention；
Fig. 7 is Fig. 6 right view.
Fig. 8 is that the current of electric of the present invention gathers the circuit diagram of submodule；
Fig. 9 is the circuit diagram of temperature acquisition
Figure 10 is the corresponding circuit diagram of moisture acquisition module of the present invention；
Figure 11 is the circuit diagram of the main control module of the present invention；
Figure 12 is the circuit diagram of LED display module；
Figure 13 is the circuit diagram of motor drive module；
Figure 14 is the circuit diagram of communication module；
Figure 15 is the circuit diagram of voltage transformation module.
Embodiment
Below in conjunction with the accompanying drawings, by the description to embodiment, the present invention will be further described.
As shown in Fig. 1~15, the invention discloses a kind of grain moisture detector of compaction type, including housing 1, housing 1
Interior to be provided with rolling wheel by power transmission shaft 2, rolling wheel includes wide rolling wheel 3 and narrow rolling wheel 4, and wide rolling wheel 3 is rolled with narrow
Wheel 4 is rotatably installed on housing 1 by a power transmission shaft 2 respectively, wherein the bottom peace for the power transmission shaft 2 being connected with wide rolling wheel 3
Equipped with gear I 5, the bottom for the power transmission shaft 2 being connected with narrow rolling wheel 4 is provided with gear II 6, and gear I 5 is engaged with gear II 6, tooth
Take turns II 6 sides away from gear I 5 to engage with a gear III 7, gear III 7 passes through the integral control circuit positioned at the lower section of housing 1
Driving.The integral control circuit includes moisture acquisition module, main control module, indicating lamp module, motor drive module, communication mould
Block and the power module powered for foregoing circuit；The data acquisition module is connected with the main control module, for that will collect
Data send to main control module analysis, to obtain the moisture value of cereal to be detected, it is described that the power module, which is used for,
Main control module and the data acquisition module provide operating voltage.
As shown in Figure 6,7, the wheel rim of narrow rolling wheel 4 of the invention is provided with section notch 16 triangular in shape, notch 16
Two side length of sides are consistent, and both sides angle is 90 °, and narrow rolling wheel 4 is partly provided between per two adjacent notches 16
Annular knurl 17, such setting can fully crush material, improve the measurement accuracy of instrument.
For the ease of the replacing of wide rolling wheel 3 and narrow rolling wheel 4, by the bottom centre of wide rolling wheel 3 and narrow rolling wheel 4
It is fixedly connected respectively by drive link I 18, drive link II 19 with power transmission shaft 2, the junction of two drive links and power transmission shaft 2 is all provided with
Have an O-ring seal 15, the application of O-ring seal 15, can effective water proof and dust proof, in order to improve the survey of resistance-type Moisture Meter
Accuracy of measurement.Meanwhile, the bottom of drive link I 18 and wide rolling wheel 3 is connected as a single entity, improve the resistance to overturning of whole instrument,
And drive link II 19 is detachably connected with narrow rolling wheel 4, narrow rolling wheel 4 is conveniently replaceable, simplifies the assembling of rolling wheel, specifically
Removable structure is as follows：The center of narrow rolling wheel 4, which is provided with, is used for the driving hole 20 that drive link II 19 is passed through, the top of drive link II 19
Through driving hole 20 and positioned at the top of narrow rolling wheel 4, pass through pressure between the top of drive link II 19 and the top of narrow rolling wheel 4
Tight nut 21 is compressed, and is provided with spiral helicine briquetting 22 in the bottom of clamp nut 21, and briquetting 22 can further increase compression
The pretightning force of nut 21.
The top of housing 1 is respectively provided with the mounting hole for installing wide rolling wheel 3 and narrow rolling wheel 4, wide rolling wheel 3 with it is narrow
Rolling wheel 4 is arranged in mounting hole by bearing 8 and bearing block 9 respectively, wherein installing the hole side of the mounting hole of narrow rolling wheel 4
Provided with the flange 10 being connected as a single entity with housing 1, the bearing block 9 of narrow rolling wheel 4 is fixedly mounted on flange 10, wide rolling wheel 3
Bearing block 9 is fixedly mounted on a sliding block 11, and the bottom of sliding block 11 is fixed with push pedal 12, and push pedal 12 is with being laterally located at housing 1
The adjusting screw rod 13 of side is fixed, and the side of housing 1 is provided with the screwed hole for being used for being threadedly coupled with adjusting screw rod 13, adjusting screw rod
13 one end are fixed with push pedal 12, and the other end passes through screwed hole, extends to the outside of housing 1, the hole side of screwed hole is installed with
One adjusting nut 14, adjusting screw rod 13 passes through adjusting nut 14, and is threadedly coupled with adjusting nut 14.Provided with use in housing 1
It is more than the length of push pedal 12, width and the contract of push pedal 12 of chute 23 in the length of the chute 23 for installing push pedal 12, and chute 23
Close, the glide direction of sliding block 11 is parallel with the line in the wide center of circle of rolling wheel 3 and the center of circle of narrow rolling wheel 4.
Ground in the use of the present invention, realizing that regulation is wide by turning the adjusting screw rod 13 in the outside of housing 1
Spacing between pinch roller 3 and narrow rolling wheel 4.Due to being connected between the shaft and housing 1 of adjusting screw rod 13 by screw thread
Connect, and the end of adjusting screw rod 13 is fixed with push pedal 12, thus when rotating adjusting screw rod 13, adjusting screw rod 13 can drive and push away
Plate 12 is moved left and right, and push pedal 12 is then moved left and right together with sliding block 11, so as to realize that wide rolling wheel 3 is close or remote narrow
Rolling wheel 4, so as to realize the spacing between wide rolling wheel 3 and narrow rolling wheel 4, enables rolling device to be applicable and different-diameter
Particulate matter, reduces use cost.
The present invention provides a kind of integral control circuit of the grain moisture detector of compaction type, data acquisition module and master control
Module is connected, and is analyzed for the data collected to be sent to the main control module, to obtain the moisture value of cereal to be detected, institute
Stating power module is used to be that the main control module and the data acquisition module provide operating voltage；The data acquisition module bag
Include：Current of electric sampling submodule, moisture sampling submodule, temperature sampling submodule；It is current of electric sampling submodule referring to Fig. 8
The circuit diagram of block.
Referring to the circuit diagram that Fig. 8 is current of electric sampling submodule, motorL and motorA are motor drive power supply, are passed through
The input amplifier U10B of tap 3 of coil inverting input after transformer T1, and the positive input of the amplifier U10B
Ground connection, the inverting input and output end be connected with resistance R39, amplifier U10B output end by resistance R16 and
Amplifier U10A positive input is connected, and the inverse output terminal of the amplifier U10A passes through resistance R62 and inverse output terminal
It is connected, and the output end is grounded by resistance R61, the output end is positive defeated by resistance R57, R65 and amplifier U9B's
Enter end to be connected, the inverting input of the amplifier U9B is connected with output end, and the output end and the main control module phase
Even, the signal of the specific amplifier U9B outputs is motor ADC, and pin corresponding with the main control module is connected.
Referring to Fig. 9, Fig. 9 is the circuit diagram of temperature sampling submodule, can be included：At least one temperature sensor, sensing
Device can be connected on connector J7, and J7 pin 1 and pin 2 are used for transmitting the data that temperature sensor is collected, often
The data output positive pole pin 1 of one temperature sensor is by first resistor R38 connection operating voltage 5V and passes through the first electric capacity
C30 is connected to sign-changing amplifier U8A positive input, and the data output negative pin 1 of the temperature sensor is filtered by RC
Device (the RC wave filters of C33, R42 composition in parallel) is connected to the positive input of the sign-changing amplifier, the sign-changing amplifier
Reverse input end is connected with output end.
It is the circuit diagram that moisture gathers submodule referring to Figure 10, can includes：Moisture transducer J6 one end pin 1 passes through
Electric capacity C32 is connected with other end pin 2, and is connected to operating voltage 22V with resistance R66 in parallel by switching tube Q4；It is described
Switching tube Q4 output end is connected by electric capacity R40, Q4 one end with triode Q5 colelctor electrode, the base stage of the triode Q5
It is connected by resistance R43 with the supply voltage control signal from the main control module, the other end of the moisture transducer leads to
Cross resistance R63 with C47, R48 and C38 in parallel to be connected, with switch module DG419DY pin 2 between the R48 and C38
It is connected, can also adds electric capacity C48 and C49 in J6 output end and be filtered, the pin 3 of the switch module passes through resistance
R49, R50, R51, the pin 6 of the switch module are connected with the main control module, the data output pins 1 of the switch module
It is connected with amplifier module U12 pin 11, the pin 7 of the amplifier module U12 passes through resistance R46, R47 and operational amplifier
U9A positive input is connected, and the reverse input end of the operational amplifier U9A is connected with output end, the operational amplifier
U9A output end is connected with the main control module；The current of electric sampling submodule includes：Motor power passes through transformer T1
Output motor test signal MOTOR TEST input amplifiers U10B reverse input end, and the forward direction of the amplifier U10B afterwards
Input end grounding, the inverting input and output end are connected with resistance R39, and the output end of the amplifier U10B passes through resistance
R16 is connected with the positive input of amplifier U10A (not shown)s, and the inverse output terminal of the amplifier U10A passes through electricity
Resistance R62 is connected with inverse output terminal, and the output end is grounded by resistance R61, the output end by resistance R57, R65 and
Amplifier U9B positive input is connected, and the inverting input of the amplifier U9B is connected with output end, and the output end
It is connected with the main control module, the connection of other pins of U11 and U12, referring to diagram, is to realize chip in specific figure
Complete function, can also be using other connected modes in the case where realizing chip complete function, and the embodiment of the present invention is not right
It is defined.
The main control module is by model STM32F103CBT6 singlechip group into specific connection may refer to Figure 11.
It should be noted that moisture sampling submodule specifically can be by the moisture of moisture transducer direct measurement cereal
Value, it is to be understood that obtain that grain moisture value is more unilateral by way of directly obtaining, because what is obtained is local water
Score value, and the mode obtained is not accurate enough, so in the embodiment of the present invention, moisture value will be obtained and sent to main control module 4, in case
Carry out numerical value processing；Same way, it is also possible to obtain the temperature value around cereal by temperature sensor.In this hair inventive embodiments,
Temperature sensor and/or moisture transducer can be arranged between two rolling wheels of Moisture Meter, for rolling paddy to be measured
Thing, and the numerical value obtained by the rolling wheel in roller compaction process, in real time to the collection of temperature and moisture, obtain gathered data.
By the rotation of rolling wheel, the moisture and temperature value of the cereal of diverse location are obtained, specifically, multiple be averaged can be obtained
Value, to improve the accuracy of data.
It is understood that the rolling wheel of motor results in the current value of real-time change during rolling, in addition
Can be obtained by physics knowledge, when cereal resistance value for it is known when, you can obtaining flowing through the magnitude of voltage of cereal, (magnitude of voltage is
The product of resistance value and current value).Then according to magnitude of voltage in main control module and the corresponding relation of moisture value, it can both obtain pair
The moisture value answered.It should be noted that cereal moisture content and conductance have certain calculated relationship, and conductance with electricity
Resistance can obtain magnitude of voltage with certain calculated relationship, resistance and electric current and magnitude of voltage and moisture value have default meter
Calculate formula relationship, it is possible to obtain moisture value.The specific mathematical computations embodiment of the present invention is not repeated it herein.
The water that processing moisture transducer is obtained is carried out by switch module U11 and amplifier module U12 in the embodiment of the present invention
Score value, can reduce the noise signal in sampling process, further improve the accuracy of water content detection result
Optionally, the embodiment of the present invention can also include indicating lamp module, and referring to Figure 12, the indicating lamp module includes：
Indicator lamp LED1 to LED5 one end is connected by 1K Ohmic resistances with the main control module respectively, and indicator lamp LED1 is to LED5's
The other end is grounded.The control command sent by receiving main control module controls LED1-LED5 flicker, plays the work of user reminding
With further improving Consumer's Experience.
Optionally, motor drive module as shown in fig. 13 that is also provided, the motor drive module includes：Relay K3 with
Diode D4 parallel connection access triodes Q3 colelctor electrode, the colelctor electrode phase of the anode of the diode D4 and the diode Q3
Even, the negative electrode of the diode D4 is connected with operating voltage, the grounded emitter of the anode of the diode D4, the diode
The base stage of D4 anode is connected by resistance R32 with the main control module.When relay connects 3 and 4, or 5 and 6 to realize
To the different operating of motor, for example, realize rotating and reverse for motor.
Optionally, the embodiment of the present invention also includes Figure 14 communication module, and the communication module includes：RS485 communication moulds
Block, CAN；The RS485 communication modules include：Communication control chip MAX485 (U3) pin 2 is connected with pin 3
Connect, and be connected together with the pin 1 and pin 4 of the communication control chip MAX485 with the main control module, the Control on Communication
Chip MAX485 pin 6 and pin 8 output RS485 signals of communication；
The CAN includes：Communication control chip SN65HVD232 (U5) pin 1 and pin 4 and the master
Module is controlled to be connected, the pin 6 and pin 7 of the communication control chip SN65HVD232 respectively by resistance R5 and R4 it is earthy with
Export signal of communication.
In addition, referring to Figure 15, the embodiment of the present invention also provides a kind of voltage conversion circuit figure, PL, PN are input voltage, warp
Output 24V DC voltages after transformer LCM1 and voltage conversion chip U1 are crossed, voltage can be carried out by input of 24V DC voltages
It is converted to 3.3V, 22V and positive and negative 5V.
A kind of grain moisture detector of compaction type of the present invention, can improve the accurate of moisture analyser water analysis
Rate；A kind of grain moisture detector of compaction type of the present invention, carries out processing moisture by switch module and amplifier module and senses
The moisture value that device is obtained, can reduce the noise signal in sampling process, further improve the accuracy of water content detection result；This
A kind of grain moisture detector of compaction type of invention, is that circuit control can be achieved using the relatively low single-chip microcomputer of relative price, has
Help reduce the cost of whole moisture analyser.
Above-described is only the preferred embodiment of the present invention, it is noted that for one of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection domain.
Claims (10)
1. it is provided with a kind of grain moisture detector of compaction type, including housing (1), the housing (1) by power transmission shaft (2)
Rolling wheel, the rolling wheel includes wide rolling wheel (3) and narrow rolling wheel (4), it is characterised in that：The wide rolling wheel (3) with
Narrow rolling wheel (4) is rotatably installed on housing (1) by a power transmission shaft (2) respectively, wherein the biography being connected with wide rolling wheel (3)
The bottom of moving axis (2) is provided with gear I (5), and the bottom for the power transmission shaft (2) being connected with narrow rolling wheel (4) is provided with gear II
(6), the gear I (5) is engaged with gear II (6), and side of the gear II (6) away from gear I (5) is nibbled with a gear III (7)
Close；
It is respectively provided with the top of the housing (1) and wide rolling wheel (3) and the mounting hole of narrow rolling wheel (4), the width is installed
Rolling wheel (3) is arranged in mounting hole by bearing (8) and bearing block (9) respectively with narrow rolling wheel (4), wherein installing narrow stone roller
The hole side of the mounting hole of pinch roller (4) is provided with the flange (10) being connected as a single entity with housing (1), the bearing block of the narrow rolling wheel (4)
(9) it is fixedly mounted on flange (10), the bearing block (9) of the wide rolling wheel (3) is fixedly mounted on a sliding block (11), institute
The bottom for stating sliding block (11) is fixed with push pedal (12), the push pedal (12) and the adjusting screw rod for being laterally located at housing (1) side
(13) fixed, the side of the housing (1) is provided with the screwed hole for being used for being threadedly coupled with adjusting screw rod (13), the adjusting screw rod
(13) one end is fixed with push pedal (12), and the other end passes through screwed hole, extends to the outside of housing (1)；It is provided with the housing (1)
Chute (23) for installing push pedal (12), and length of the length more than push pedal (12) of the chute (23), chute (23)
Width agree with push pedal (12), the glide direction of the sliding block (11) and wide rolling wheel (3) center of circle and narrow rolling wheel (4) center of circle
Line it is parallel；
The gear III (7) is driven by the integral control circuit below housing (1)；
The integral control circuit includes moisture acquisition module, main control module, indicating lamp module, motor drive module, communication mould
Block and the power module powered for foregoing circuit；The data acquisition module is connected with the main control module, for that will collect
Data send to main control module analysis, to obtain the moisture value of cereal to be detected, it is described that the power module, which is used for,
Main control module and the data acquisition module provide operating voltage.
2. a kind of grain moisture detector of compaction type according to claim 1, it is characterised in that：The hole of the screwed hole
While being installed with an adjusting nut (14), the adjusting screw rod (13) passes through adjusting nut (14), and and adjusting nut
(14) it is threadedly coupled.
3. a kind of grain moisture detector of compaction type according to claim 2, it is characterised in that：Two power transmission shafts
(2) O-ring seal (15) is fixedly mounted in the one end for being respectively mounted wide rolling wheel (3) and narrow rolling wheel (4).
4. a kind of grain moisture detector of compaction type according to any one of claims 1 to 3, it is characterised in that：It is described
The wheel rim of narrow rolling wheel (4) is provided with section notch (16) triangular in shape, and two side length of sides of the notch (16) are consistent, and
Both sides angle is 90 °.
5. a kind of grain moisture detector of compaction type according to claim 1, it is characterised in that：The data acquisition module
Block includes：Current of electric sampling submodule, moisture sampling submodule, temperature sampling submodule；
The temperature sampling submodule includes：At least one temperature sensor, the data output positive pole of each temperature sensor
Operating voltage is connected by first resistor and passes through the positive input of the first capacitance connection to sign-changing amplifier, the TEMP
The data output negative pole of device is connected to the positive input of the sign-changing amplifier by RC wave filters, the sign-changing amplifier it is reverse
Input is connected with output end；
The moisture collection submodule includes：One end of moisture transducer is connected by electric capacity C32 with the other end, and passes through switch
Pipe Q4 is connected to operating voltage with resistance R66 in parallel；The output end of the switching tube Q4 passes through electric capacity R40's and triode Q5
Colelctor electrode is connected, and the base stage of the triode Q5 is connected by resistance with the supply voltage control signal from the main control module
The other end of the moisture transducer is connected by resistance R63 with C47, R48 and C38 in parallel, between the R48 and C38
It is connected with switch module DG419DY pin 2, the pin 3 of the switch module passes through resistance R49, R50, R51, the switch
The pin 6 of module is connected with the main control module, the data output pins 1 of the switch module and amplifier module U12 pin
11 are connected, and the pin 7 of the amplifier module U12 is connected by resistance R46, R47 with operational amplifier U9A positive input,
The reverse input end of the operational amplifier U9A is connected with output end, output end and the master control of the operational amplifier U9A
Module is connected；
The current of electric sampling submodule includes：Motor power output motor test signal MOTOR after transformer T1
TEST input amplifiers U10B reverse input end, and positive input ground connection, the anti-phase input of the amplifier U10B
The output end that end is connected with resistance R39, the amplifier U10B with output end passes through the positive defeated of resistance R16 and amplifier U10A
Enter end to be connected, the inverse output terminal of the amplifier U10A is connected by resistance R62 with inverse output terminal, and the output end is logical
Resistance R61 ground connection is crossed, the output end is connected by resistance R57, R65 with amplifier U9B positive input, the amplifier
U9B inverting input is connected with output end, and the output end is connected with the main control module；
The main control module by model STM32F103CBT6 singlechip group into.
6. a kind of grain moisture detector of compaction type according to claim 1, it is characterised in that：The motor drives mould
Block includes：Relay K3 access triode Q3s in parallel with diode D4 colelctor electrode, the anode of the diode D4 and described two
Pole pipe Q3 colelctor electrode is connected, and the negative electrode of the diode D4 is connected with operating voltage, the transmitting of the anode of the diode D4
Pole is grounded, and the base stage of the anode of the diode D4 is connected by resistance R32 with the main control module.
7. a kind of grain moisture detector of compaction type according to claim 1, it is characterised in that：The communication module bag
Include：RS485 communication modules, CAN；The RS485 communication modules include：Communication control chip MAX485 pin 2
It is connected with pin 3, and is connected together with the pin 1 and pin 4 of the communication control chip MAX485 with the main control module, institute
State communication control chip MAX485 pin 6 and the output RS485 signals of communication of pin 8；
The CAN includes：Communication control chip SN65HVD232 pin 1 and pin 4 and the main control module phase
Even, the pin 6 and pin 7 of the communication control chip SN65HVD232 are earthy to export communication by resistance R5 and R4 respectively
Signal.
8. a kind of grain moisture detector of compaction type according to claim 4, it is characterised in that：The narrow rolling wheel
(4) annular knurl (17) is partly provided between per two adjacent notches (16).
9. a kind of grain moisture detector of compaction type according to claim 3, it is characterised in that：The wide rolling wheel
(3) bottom centre with narrow rolling wheel (4) passes through drive link I (18), drive link II (19) and the fixed company of power transmission shaft (2) respectively
Connect, the O-ring seal (15) is located at the junction of drive link I (18), drive link II (19) and power transmission shaft (2).
10. a kind of grain moisture detector of compaction type according to claim 9, it is characterised in that：The drive link I
(18) bottom with wide rolling wheel (3) is connected as a single entity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710401652.XA CN106970186A (en) | 2017-05-31 | 2017-05-31 | A kind of grain moisture detector of compaction type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710401652.XA CN106970186A (en) | 2017-05-31 | 2017-05-31 | A kind of grain moisture detector of compaction type |
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| CN204710429U (en) * | 2015-06-16 | 2015-10-21 | 安徽大洋自动化科技有限公司 | Resistance-type on-line moisture detection instrument |
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| CN2449800Y (en) * | 2000-10-23 | 2001-09-26 | 周树强 | Roll spacing adjusting mechanism for flour-milling machine |
| CN104713910A (en) * | 2015-02-17 | 2015-06-17 | 合肥艾瑞德电气有限公司 | Resistive grain moisture measurement system |
| CN204718987U (en) * | 2015-06-05 | 2015-10-21 | 安徽大洋自动化科技有限公司 | Resistance-type on-line moisture detection instrument is with rolling module return structure |
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Application publication date: 20170721 |