CN206648911U - A kind of force-measuring type device for detecting grain moisture - Google Patents
A kind of force-measuring type device for detecting grain moisture Download PDFInfo
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- CN206648911U CN206648911U CN201720348265.XU CN201720348265U CN206648911U CN 206648911 U CN206648911 U CN 206648911U CN 201720348265 U CN201720348265 U CN 201720348265U CN 206648911 U CN206648911 U CN 206648911U
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- force
- strain beam
- disk roller
- fixing end
- free end
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Abstract
The utility model discloses a kind of force-measuring type device for detecting grain moisture, including base；Motor, its motor shaft sequentially passes through motor shaft pilot hole and motor shaft mounting hole is fixed, and the motor is used to provide driving force；First disk roller and the second disk roller, it is located at before force cell and rotated in opposite directions under motor driving side by side by disk roller shaft mounting hole, for by the grain crimp fallen between two disk rollers and extruding force to be passed into force cell；The force cell includes fixing end, and it is used to fix；Free end, it is set with fixing end parallel side-by-side；And the first V-arrangement strain beam, it is connected between fixing end and free end；Second V-arrangement strain beam, it is connected between fixing end and free end, and is arranged symmetrically with the first V-arrangement strain beam；Foil gauge, it is pasted on the first V-arrangement strain beam or the second V-arrangement strain beam.Detection means of the present utility model has the advantages of making response multiple bigger, sensitivity greatly improves.
Description
Technical field
It the utility model is related to sensor technical field.A kind of more specifically force cell, and in particular to force-measuring type
Device for detecting grain moisture.
Background technology
Moisture is one of important indicator of grain quality height, and grain moisture detector is widely used in cereal storage at present
The links such as fortune, processing, sale, dynamometry moisture transducer have accuracy high and applicable compared with resistance or capacitance type sensor
The advantages of scope is wide.
The A of Patent No. CN 104142358 Chinese utility model patent " the online grain moisture sensing device of force-measuring type "
A kind of grain moisture sensing device is disclosed, comprising a force cell, above-mentioned force cell leads to along its one side end face of longitudinal direction
Cross screw to be fixed on procapsid inner convex platform, certain interval is left between remaining end face and procapsid inwall, it is crowded in order to transmit
Pressure, for measuring the extruding force suffered by the grain between two disk rollers and the extruding force signal collected being converted into telecommunications
Number, above-mentioned force cell is resistance-strain chip force cell, so that the change according to foil gauge group bonding method can be with
The extruding force of grain deformation and the torsion of power drive mechanism of two disk roller transmission of measurement.But above-mentioned utility model exist with
Lower problem：1st, to coordinate the structure type and method of work of the sensor, above-mentioned utility model patent grain moisture sensing fills
The procapsid put need to be provided with boss, add manufacture difficulty and manufacturing cost；2nd, sensor output is small, sensitivity is low and rigidity has
Limit；3rd, the physical dimension of grain moisture sensing device can be increased using common cantilever beam weighting transducer, thus it is inapplicable.
Utility model content
The utility model purpose is to provide a kind of force cell for grain moisture detection, free end and fixing end it
Between symmetrically arranged V-arrangement strain beam and inverted V-shaped strain beam be installed, strain gauge adhesion improves the sensitive of measurement because becoming on beam
Degree.
It is a kind of force cell for grain moisture detection, free end and fixation that the utility model, which also has a purpose,
Difference in height between end be present, reserve strain beam and free end deformation space, error caused by avoiding sensor fixation simultaneously reduces biography
Sensor installing space.
The utility model also has a purpose to be to provide a kind of force-measuring type device for detecting grain moisture, its interior force cell
Using symmetrically arranged V-arrangement strain beam and inverted V-shaped strain beam, response multiple and measurement sensitivity are improved.
In order to realize according to these purposes of the present utility model and further advantage, there is provided a kind of force-measuring type grain moisture inspection
Device is surveyed, including：
Base, it is the L-type structure that horizontal plane and vertical plane form, and boss, the vertical plane are opened up on the horizontal plane
On open up motor shaft pilot hole；
Motor, its motor shaft sequentially passes through motor shaft pilot hole and motor shaft mounting hole is fixed, and the motor is used for
Driving force is provided；
First disk roller and the second disk roller, before two disk roller wheel shafts are located at force cell side by side by disk roller shaft mounting hole
Face and motor driving under rotate in opposite directions, for by the grain crimp fallen between two disk rollers and extruding force being passed to
Force cell；
The force cell includes：
Fixing end, it is used to fix；
Free end, it is set with the fixing end parallel side-by-side；And
First V-arrangement strain beam, it is connected between the fixing end and free end；
Second V-arrangement strain beam, it is connected between the fixing end and free end, and with the first V-arrangement strain beam
It is arranged symmetrically；
Foil gauge, it is pasted on the first V-arrangement strain beam or the second V-arrangement strain beam.
Preferably, the second disk roller outer rim is machined with groove, and the first disk roller outer rim is machined with annular knurl line, to carry
The frictional force of high two disk rollers.
Preferably, the height of the free end is less than the height of fixing end, make fixing end and the upper plane of free end it
Between difference in height be present, difference in height be present between fixing end and the lower plane of free end.
Preferably, the respective angle α of the first V-arrangement strain beam and the second V-arrangement strain beam is 30-60 degree.
Preferably, in addition to：Disk roller shaft mounting hole, it is symmetrically laid on the fixing end and free end, and position
On the axis of symmetry of the first V-arrangement strain beam and the second V-arrangement strain beam, for connecting disk roller.
Preferably, in addition to：
Motor shaft mounting hole, it is opened in relative to the side of disk roller shaft mounting hole in the fixing end, for supporting electricity
Arbor.
The utility model comprises at least following beneficial effect：1st, elastomer is taken V-arrangement cantilever beam structure by the utility model
Instead of traditional square-section girder construction as key elastic element, the structure can adjust the rigidity and effective mass of elastomer
Distribution, larger sensitivity enhancement amplitude is realized, it is bigger to respond more high-amplification-factor.2nd, the utility model fixing end with from
Difference in height be present by end, so that free end is hanging, space is reserved for stress and deformation, is used than traditional sensors saving empty
Between, simpler convenience is installed and used, error caused by being fixed due to sensor can be avoided.3rd, the utility model elastomer stays
There are multiple mounting holes to simplify Moisture Meter physical dimension with the sensing element as force-measuring type grain moisture sensing device, save
Processing cost.4th, strain measurement mode is changed into the measurement of flexural-tensile strain beam by tension and compression strain beam measurement, should from Analysis of materials mechanics
Change is exaggerated 8 times or so, so as to which sensitivity coefficient increases substantially.
Further advantage, target and feature of the present utility model embody part by following explanation, and part will also pass through
Research of the present utility model and practice are understood by the person skilled in the art.
Brief description of the drawings
Fig. 1 is a kind of structure chart of force-measuring type device for detecting grain moisture of the present utility model.
Fig. 2 is the plan of the force cell of the present utility model for grain moisture detection.
Fig. 3 is the stereogram of the force cell of the present utility model for grain moisture detection.
Fig. 4 is the force analysis figure of the strain beam of the force cell of the present utility model for grain moisture detection.
Fig. 5 is the position assumption diagram of the foil gauge of the force cell of the present utility model for grain moisture detection.
Fig. 6 is the foil gauge amplification circuit diagram of the force cell of the present utility model for grain moisture detection.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to explanation
Book word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of individual other elements or its combination.
Fig. 1 is shown according to a kind of force-measuring type device for detecting grain moisture of the present utility model, including force cell
100, in addition to base 200, motor 300, disk roller 400.
Fig. 2-6 shows a kind of way of realization of force cell 100, including：Fixing end 110, free end 120, strain
Beam 130, foil gauge 140.The foil gauge 140 is pasted on strain beam 130, and it changes resistance according to the deformation of strain beam 130
Value, increased resistance value is amplified so as to which extruding force signal is converted into electric signal, through later by connected amplifying circuit
The processing of continuous circuit is transferred to display instrument or host computer, it is achieved thereby that the on-line measurement of grain moisture content；The strain beam 130
Including the first V-arrangement strain beam and the second V-arrangement strain beam, the first V-arrangement strain beam and the second V-arrangement strain beam are along first level axle
C-C is symmetrical arranged, and one end of the strain beam 130 is connected end 110, other end connection free end 120, is integrally formed formula knot
Structure；Wherein, the fixing end 110 and the horizontal symmetry axis of free end 120 and the first level overlapping of axles.Strain beam 130 selects
Take v-shaped structure to substitute traditional straight, so as to change the rigidity of elastomer and effective mass distribution, make force cell
100 sensitivity is lifted by a relatively large margin, and response more high-amplification-factor is bigger.
In another embodiment, as shown in Fig. 2 the height of the fixing end 110 is more than the height of free end 120, fixation is made
Difference in height be present between end 110 and the upper plane of free end 120, height between fixing end 110 and the lower plane of free end 120 be present
Degree is poor, and the difference in height is more than or equal to the deformation quantity of free end 120, so that free end 120 vacantly makes it leave deformation sky
Between, space is used than traditional sensors saving, installs and uses simpler convenience, can be avoided caused by being fixed due to sensor
Error.
In another embodiment, as shown in figure 5, the foil gauge 140 is made up of four identical resistance strain plates, point
Not Wei R1, R2, R3 and R4, four resistance strain plates are pasted onto on the strain beam 130, may be mounted at the strain of the first V-arrangement
On beam or the second V-arrangement strain beam；Four resistance strain plate Central Symmetries installation forms cross row, and such a laying can survey
The extruding force of the grain deformation of two disk roller transmission of amount.
In another embodiment, as shown in fig. 6, foil gauge 140 electrically connects amplifying circuit, to the resistance of resistance strain plate
Change is amplified and is transferred to display instrument or host computer, it is achieved thereby that the on-line measurement of grain moisture content.
In another embodiment, force cell 100 also includes the second disk roller shaft mounting hole 121, the first rolling axle is installed
Hole 113, the first disk roller shaft mounting hole 113 are the through-hole structure being laid in the fixing end 110, and it is with being laid in free end
The second disk roller of through-hole structure shaft mounting hole 121 on 120 is symmetrically laid, the second disk roller shaft mounting hole 121, the first rolling axle
Mounting hole 113 is used to connect the distance between disk roller, the second disk roller shaft mounting hole 121, the first disk roller shaft mounting hole 113 completely
Foot：The gap of two disk roller outer rims is less than the minimum diameter of grain, makes from the cereal passed through between two disk rollers by overstocked deformation, from
And cause the deformation of strain beam 130, the resistance of foil gauge 140 is changed.
In another embodiment, force cell 100 also includes：Motor shaft mounting hole 111, it is opened in the fixing end
Relative to the side of the first disk roller shaft mounting hole 113 on 110, for connecting motor；Positioning hole 112, it is laid in the motor
The lower end of shaft mounting hole 111, for force cell to be fixed on into base relevant position.By motor shaft mounting hole 111 and determine
Position hole 112 is easy to force cell 100 being arranged in measurement apparatus, and ensures the precision of measurement.
In another embodiment, as shown in figure 4, the material of the strain beam 130 typically uses aluminium alloy, the strain of the first V-arrangement
For the angle α of beam and the second V-arrangement strain beam between 30-60 degree, angle α makes the knot of the first V-arrangement strain beam and the second V-arrangement strain beam
Structure is easy to change, it is preferred that angle α takes 45 degree or so of angle, so as to change the rigidity of elastomer and effective mass distribution
State, the sensitivity of force cell 100 is lifted by a relatively large margin, improve to 4-8 times, response more high-amplification-factor is bigger.
Base 200 is the L-type structure that horizontal plane and vertical plane form, and is opened up and the positioning hole 112 on the horizontal plane
The boss 210 being fixedly connected, opens up motor shaft pilot hole 220 on the vertical plane, and the base 200 is by force cell 100
Installation site is accurately located at, ensures the precision of measurement.
The motor shaft 310 of motor 300 sequentially passes through motor shaft pilot hole 220, motor shaft mounting hole 111 is fixed, institute
State motor 300 to rotate for drive roller wheel 400, be the drive mechanism of disk roller 400.
Disk roller 400, including two disk rollers, two disk roller wheel shafts are located at force cell side by side by disk roller shaft mounting hole
Rotate before 100 and in opposite directions, for by the grain crimp fallen between two disk rollers and extruding force to be passed into dynamometry
Sensor 100；Wherein, gap, the gap between the lower end of free end 120 of the force cell 100 and base 200 be present
More than or equal to the deformation quantity of free end 120, space is used than traditional sensors saving, installs and uses simpler convenience, can
To avoid error caused by being fixed due to sensor.
In another embodiment, as shown in figure 1, the disk roller 400 is respectively the first disk roller 410 and the second disk roller 420, institute
State the outer rim of the first disk roller 410 and be uniformly machined with annular knurl line, the outer rim of the second disk roller 420 is machined with groove, to improve two rollers
The frictional force of wheel, the cereal passed through therebetween is fully extruded.
In another embodiment, the gap of the outer rim of 410 and second disk roller of the first disk roller 420 is less than the minimum of grain directly
Footpath, the cereal passed through therebetween are fully extruded, and improve measurement accuracy.
A kind of force-measuring type device for detecting grain moisture of the present utility model, its force cell take V-arrangement cantilever beam structure
Instead of traditional square-section girder construction as key elastic element, the structure can adjust the rigidity and effective mass of elastomer
Distribution, larger sensitivity enhancement amplitude is realized, it is bigger to respond more high-amplification-factor.
Although embodiment of the present utility model is disclosed as above, it is not restricted in specification and embodiment
Listed utilization.It can be applied to various suitable fields of the present utility model completely.For those skilled in the art,
Other modification is easily achieved.Therefore under the universal limited without departing substantially from claim and equivalency range, this reality
Specific details is not limited to new and shown here as the legend with description.
Claims (6)
- A kind of 1. force-measuring type device for detecting grain moisture, it is characterised in that including：Base, it is the L-type structure that horizontal plane and vertical plane form, and opens up boss on the horizontal plane, is opened on the vertical plane If motor shaft pilot hole；Motor, its motor shaft sequentially passes through motor shaft pilot hole and motor shaft mounting hole is fixed, and the motor is used to provide Driving force；First disk roller and the second disk roller, two disk roller wheel shafts be located at side by side before force cell by disk roller shaft mounting hole and Rotated in opposite directions under motor driving, for by the grain crimp fallen between two disk rollers and extruding force to be passed into dynamometry Sensor；The force cell includes：Fixing end, it is used to fix；Free end, it is set with the fixing end parallel side-by-side；AndFirst V-arrangement strain beam, it is connected between the fixing end and free end；Second V-arrangement strain beam, it is connected between the fixing end and free end, and symmetrical with the first V-arrangement strain beam Arrangement；Foil gauge, it is pasted on the first V-arrangement strain beam or the second V-arrangement strain beam.
- 2. force-measuring type device for detecting grain moisture as claimed in claim 1, it is characterised in that the second disk roller outer rim processing There is groove, the first disk roller outer rim is machined with annular knurl line, to improve the frictional force of two disk rollers.
- 3. force-measuring type device for detecting grain moisture as claimed in claim 1, it is characterised in that the height of the free end is less than The height of fixing end, make difference in height between fixing end and the upper plane of free end be present, the lower plane of fixing end and free end it Between difference in height be present.
- 4. force-measuring type device for detecting grain moisture as claimed in claim 2 or claim 3, it is characterised in that the first V-arrangement strain beam Respective angle α with the second V-arrangement strain beam is 30-60 degree.
- 5. force-measuring type device for detecting grain moisture as claimed in claim 4, it is characterised in that the disk roller shaft mounting hole, its Symmetrically it is laid on the fixing end and free end, and positioned at the symmetrical of the first V-arrangement strain beam and the second V-arrangement strain beam On axis, for connecting disk roller.
- 6. force-measuring type device for detecting grain moisture as claimed in claim 5, it is characterised in that the motor shaft mounting hole, its It is opened in relative to the side of disk roller shaft mounting hole in the fixing end, for supporting motor shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720348265.XU CN206648911U (en) | 2017-04-05 | 2017-04-05 | A kind of force-measuring type device for detecting grain moisture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720348265.XU CN206648911U (en) | 2017-04-05 | 2017-04-05 | A kind of force-measuring type device for detecting grain moisture |
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| Publication Number | Publication Date |
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| CN206648911U true CN206648911U (en) | 2017-11-17 |
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| CN201720348265.XU Active CN206648911U (en) | 2017-04-05 | 2017-04-05 | A kind of force-measuring type device for detecting grain moisture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181353A (en) * | 2018-01-26 | 2018-06-19 | 安徽大洋自动化科技有限公司 | A kind of online grain moisture content instrument of resistance-type for showing muller gap |
-
2017
- 2017-04-05 CN CN201720348265.XU patent/CN206648911U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181353A (en) * | 2018-01-26 | 2018-06-19 | 安徽大洋自动化科技有限公司 | A kind of online grain moisture content instrument of resistance-type for showing muller gap |
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