CN206945179U - A kind of device for pressure measurement - Google Patents
A kind of device for pressure measurement Download PDFInfo
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- CN206945179U CN206945179U CN201720770158.6U CN201720770158U CN206945179U CN 206945179 U CN206945179 U CN 206945179U CN 201720770158 U CN201720770158 U CN 201720770158U CN 206945179 U CN206945179 U CN 206945179U
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- elastic component
- cushion block
- pressure measurement
- bearing
- measurement according
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Abstract
The utility model provides a kind of device for pressure measurement, including bearing, the first elastic component, the second elastic component, cushion block and force snesor, bearing is arranged in the first elastic component, first elastic component is socketed in the second elastic component, formed with space, cushion block is provided with gap, force snesor is arranged on the outside of the second elastic component.The utility model measures pressure by the way that force snesor is attached on elastomer, using the mode measured indirectly, and simple in construction, cost is cheap；By the way that device for pressure measurement is arranged on fixation kit, the normal operation of equipment is not influenceed, while can guarantee that accurate variable；By setting cushion block and setting cushion block gap, ensure the normal deformation of elastic component and elastic component deformation quantity is protected, and keep higher sensitivity.
Description
Technical field
The utility model belongs to sensor field, more particularly to a kind of device for pressure measurement.
Background technology
Pressure sensor is one of the most frequently used sensor, can be divided into strain chip and spring etc. according to principle, but existing
Some pressure sensors, usually require that testee is relatively fixed with sensor, it is traditional in the case where testee moves
Sensor can not well realize that measurement, such as the contact of foil gauge need wire to connect, when axle rotates, can not generally use or
It is attached using slip ring, but now, sensor life-time will be influenceed by structures such as slip rings, and reliability is bad, lack a kind of
Suitable for the device for pressure measurement under operating or situation of movement.
Utility model content
In view of this, in order to which overcome the deficiencies in the prior art the utility model provides a kind of device for pressure measurement, pass through by
Force snesor is external, and the pressure to caused by fixation kit measures using rotation or the compression of mobile component, to survey indirectly
The mode of amount, solve in existing direct measurement mode, force snesor can not be arranged or the problem of longevity.
In order to realize above-mentioned technical purpose, the utility model uses following technical scheme：
A kind of device for pressure measurement, including bearing, the first elastic component, the second elastic component, cushion block and force snesor, bearing are set
To put in the first elastic component, the first elastic component is socketed in the second elastic component, and formed with space, cushion block is provided with gap,
Force snesor is arranged on the outside of the second elastic component.
Further, the first elastic component is annular, and the internal diameter of the first elastic component is equal with bearing, is set on the outside of the first elastic component
Arc notch is equipped with, the second elastic component includes an oval hole, and the oval hole includes a semicircular part and an ellipse
Shape portion or parabola shaped portion, semicircular part and oval portion or parabola shaped portion's structure are integral, semicircular part and the first elasticity
It is brought into close contact on the outside of part.
Further, force snesor, the second elasticity are posted on the outside of the oval portion of the second elastic component or parabola shaped portion
Force snesor mounting groove can be set in the oval portion of part or parabola shaped portion's outer wall.
Further, the first elastic component and the second elastic component are by spring steel making.
Further, the side of cushion block on the outside of the first elastic component with being brought into close contact, cushion block and the first elastic component sticking part
Position opposite side is contacted with the second elastic component for point or linear contact lay.
Further, there is space in cushion block and the second elastic component contact point or contact line both sides.
Further, cushion block is manufactured by hard solid material.
Further, cushion block is one kind in ellipse, olive shape or non-centrosymmetry shape.
Further, force snesor can be any one in foil gauge, constantan wire or hall sensor.
Further, one kind in Selection of Bearings roller bearing, roller bearing, thrust bearing or self-aligning bearing.
The beneficial effects of the utility model are：
1) by the way that force snesor is attached on elastic component, pulling force is measured using the mode measured indirectly, simple in construction, cost
It is cheap.
2) by the way that device for pressure measurement is arranged on fixation kit, the normal operation of equipment is not influenceed, can guarantee that simultaneously
Accurate variable.
3) by setting cushion block and setting cushion block gap, ensure the normal deformation of elastic component and elastic component deformation quantity is carried out
Protection, and keep higher sensitivity.
Brief description of the drawings
Fig. 1 is a kind of first embodiment structural representation of device for pressure measurement of the utility model；
Fig. 2 is the structural representation that there is a kind of device for pressure measurement of the utility model integral bearing to cover；
Each reference name is as follows in accompanying drawing：1st, bearing；2nd, inner ring；3rd, outer ring；4th, roller；5th, the first elastic component；6th, cushion block；
7th, the second elastic component；8th, force snesor；9th, space.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more preferably clear, below in conjunction with the accompanying drawings and implement
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining this
Utility model, it is not used to limit the utility model.
A kind of device for pressure measurement, including bearing 1, the first elastic component 5, the second elastic component 7, cushion block 6 and force snesor 8,
Bearing 1 is arranged in the first elastic component 5, and the first elastic component 5 is socketed in the second elastic component 7, formed with space 9, in gap 9
Cushion block 6 is provided with, force snesor 8 is arranged on the outside of the second elastic component.
In order to ensure to measure the life-span, the first elastic component 5 and the second elastic component 7 use spring steel or other elastomeric material systems
Make；First elastic component 5 is annular, and the internal diameter of the first elastic component 5 is equal with the external diameter of bearing 1 or skips over and is full of, to ensure bearing 1
It is good to install and fix.Second elastic component 7 is column, and the cylindrical spring part includes an oval hole, the periphery of the second elastic component 7
It can be circular or be also oval so that the second elastic component 7 forms the barreled structure of wall thickness change or the bucket for uniform wall thickness
Shape structure, the oval hole include a semicircular part and an oval portion or parabola shaped portion, semicircular part and ellipse
Portion or parabola shaped portion's structure are integral, and semicircular part is brought into close contact with the outside of the first elastic component 5.
The cushion block 6 is oval or olivary column, and certainly, it is non-central right that cushion block 6 can be also designed to as needed
Design is referred to as shaped form or fold-line-shaped or other any required shapes.The side of cushion block 6 and the outside of the first elastic component 5
It is brought into close contact, cushion block 6 is contacted with the first elastic component 5 fitting position opposite side with the second elastic component 7 for point or linear contact lay, the pad
Block 6 is manufactured by the hard such as steel, iron solid material, and passes through cure process.
When as bicycle middle shaft torgue measurement, the contact point of 6 and second elastic component of cushion block 7 or contact line both sides are present
Space 9.The distance of two end points of cushion block 6 to the second elastic component 7 is 0.01-2mm.
As a more preferably embodiment, the distance of two end points to the second elastic component 7 of cushion block 6 is 0.01-1mm, is kept away
The damage of second elastic component 7 itself or force snesor 8 caused by having exempted from the excessive deformation of the second elastic component 7, while the microdisplacement
So that bearing 1 and axle can keep normal work, the problem of over-travel causes device damage to fail is avoided.
In some heavily loaded occasions, the spacing can suitably amplify and from other force snesors as measurement original paper.
Post force snesor 8 on the outside of the oval portion or parabola shaped portion of second elastic component 7, the second elastic component 7 it is ellipse
The mounting groove of force snesor 8 can be set in rounded portions or parabola shaped portion's outer wall.Force snesor 8 is fitted in the mounting groove of force snesor 8,
The force snesor 8 is foil gauge, and with the good fit of the second elastic component 7.
In order to obtain better performance, foil gauge should be fitted in the contact point both sides of 6 and second elastic component of cushion block 7 and close to pad
The both ends of block 6 are set.
Certainly,, can be by the bullet of cushion block 6 and second when such as crane, crane are applied in the case of for larger equipment
Property the contact point of part 7 or contact line both sides space 9 be present and be adjusted to larger clearance, such as 10mm or more, and settable constantan wire is made
Combination for force snesor or using magnet and Hall sensor, deformation degree is measured by measuring magnetic field intensity, and then
Realize power pressure measxurement.
Roller bearing, roller bearing, thrust bearing, self-aligning bearing etc. can be selected in bearing 1.In the present embodiment, bearing 1 is selected
Roller bearing, bearing 1 comprise at least inner ring 2, outer ring 3 and roller 4,
The output of force snesor 8 is connected with amplifying circuit, and by amplifying circuit output measurement signal.
Measurement process principle of the present utility model is：
When power of the bearing 1 by the radial direction of the second elastic component 7, cushion block 6 can be passed to by the first elastic component 5, due to pad
The hardness of block 6 is high, and deformation is small, and cushion block 6 may proceed to extrude the second elastic component 7, now, because cushion block 6 and the second elastic component 7 are only
, there is space 9 in contact position both sides in point contact or linear contact lay, because the contact position of the second elastic component 7 is pressurized, can cause bullet
Property part depressed position both sides inwardly close to cushion block 6 so that the spacing at the both ends of cushion block 6 to the second elastic component 7 reduces, the second elasticity
Part 7 produces deformation, and the foil gauge being now arranged on the second elastic component 7 gathers this deformation and is converted into measurable electricity
Amount, realizes the collection to pressure.
In above process, by the way that cushion block 6 is arranged into olive shape or ellipse, it can give the second elastic component 7 bigger pressure
By force, deformation quantity is increased, while by controlling olive shape or the both ends of oval cushion block 6 effectively to be controlled to the distance of the second elastic component 7
The deformation quantity of the second elastic component 7 is made, prevents the second elastic component 7 because excessive deformation damages or force sensor 8 is failed.Pressing
After power reaches to a certain degree, pressure will be reduced by the entire surface pressure-bearing of cushion block 6, and protect the second elastic component 7 and foil gauge.
In order that cushion block 6 can effectively be positioned between the first elastic component 5 and the second elastic component 7 and fixation avoids cushion block
6 displacement in pressure-bearing, the outside of the first elastic component 5 are provided with arc notch, the curved portions of second elastic component of notch alignment 7,
The arc notch of first elastic component 5 agrees with cushion block 6.
To obtain more preferable deformation effects, the second elastic component 7 should be hanging with the contact portion of cushion block 6, to obtain bigger shape
Variable.
A kind of application of the device for pressure measurement of the present utility model on bicycle middle shaft torque sensor, it is specially：
The outside of bearing 1 is socketed with the first elastic component 5 and the second elastic component 7, wherein, the first elastic component 5 is socketed in the second bullet
In property part 7.First elastic component 5 is annular, and the second elastic component 7 is column, and the cylindrical spring part includes an oval hole, second
The periphery of elastic component 7 can be circle so that the second elastic component 7 forms the barreled structure of wall thickness change, and the oval hole includes one
Individual semicircular part and an oval portion, semicircular part and oval portion's structure are integral, outside semicircular part and the first elastic component 5
Side is brought into close contact, and the second elastic component 7 is arranged in the end cap of torque axis, and the periphery of the second elastic component 7 is on oval hole top
Position curvature is more than other positions curvature so that the periphery of the second elastic component 7 oval hole apical position part not with end cap
Fitting contact, the periphery of the second elastic component 7 is fitted with the strain as force snesor 8 in the both sides of oval hole apical position
Piece, the output of the foil gauge are connected with amplifying circuit.
In this embodiment,
End cap one end is provided with threaded joints, and the threaded joints are connected with bicycle bottom bracket.Set in the bearing 1 of end cap
Axle is equipped with, chain wheel and crank are provided with the axle.
It is significant to note that the sensor answers lateral arrangement, i.e. the line at center sensor and the center of bearing 1 with
Ground level.
During as torgue measurement, the operation principle of the sensor is：During work, when people's pushes pedals, pass through crank handle turns
Axle and chain wheel rotation, chain wheel are rotated by chain-driving wheel.Due to the running resistance of wheel so that chain is tightened, chain pair
Chain wheel produces pulling force backward, and the pulling force is applied on bearing 1 by axle, due to the lateral arrangement of force snesor 8, when bearing 1 by
During to pressure backward, pressure acts on bearing 1 and by the first elastic component 5, and cushion block 6 is delivered to the second elastic component 7 so that
Two elastic components 7 are changed by the resistance of foil gauge and carry out pressure measxurement in the position compression deformation of cushion block 6, now can by conversion
Draw input torque or control signal of the value of thrust as vehicle can be used directly, in stationary vehicle or when sliding, due to chain
Bar does not stress, and does not produce pulling force backward, and now, i.e., person who happens to be on hand for an errand stands on bicycle, because people is downward to the pressure of bearing 11,
Pulling force backward is not produced, and sensor now exports small or no signal, in this, as the foundation for differentiating vehicle booster.
In the present embodiment, there is space 9 in the contact point of 6 and second elastic component of cushion block 7 or contact line both sides.Two of cushion block 6
The distance of end points to the second elastic component 7 is 0.01-2mm, and in a more scheme, the distance is limited in 0.01-1mm, certainly,
The distance can be adjusted voluntarily as needed.
Certain device for pressure measurement is also used as the sensing data source for the power meter or physical consumption ridden.And
Suitable for forerunner or the scheme of rear-guard wheel hub motor.
A kind of a kind of application of the device for pressure measurement of the present utility model as weighing sensor or pulling force sensor, specifically
Device for pressure measurement to be bonded to the one side ground installation downward vertically of force sensor 8, and ensure the four of the second elastic component 7
Week is fixed and ensures to set the position of cushion block 6 hanging.The output connection amplifier or process circuit of force snesor 8 simultaneously export.
During work, when pressure transmission is passed through the first elastic component by axle by a downward pressure, axle to bearing 1, bearing 1
5th, cushion block 6 gives pressure transmission to the second elastic component 7, and therefore stress deformation, foil gauge gather the deformation and converted the second elastic component 7
Exported for pressure signal, compared to the static measurement mode of routine, the measurement advantage of the sensing is, both can be as traditional biography
Sensor equally carries out static pressure measurement, can also be measured in motion process, for example the sensor is arranged on into transmission
Take, roller band driving-axle gearing, while the pressure on conveyer belt produces deformation to the pressure of bearing 1 by roller and axle and surveyed
Amount, now has no effect on the operation of axle, realizes the real-time measurement of the conveyer belt course of work.Thus extend, the sensor is also
Available for the pressure measxurement of vehicle axles etc., the impulsive force in amount and traveling for measuring vehicle etc..
A kind of device for pressure measurement of the utility model has the beneficial effect that：
1) by the way that force snesor is attached on elastic component, pulling force is measured using the mode measured indirectly, simple in construction, cost
It is cheap.
2) by the way that device for pressure measurement is arranged on fixation kit, the normal operation of equipment is not influenceed, can guarantee that simultaneously
Accurate variable.
3) by setting cushion block and setting cushion block gap, ensure the normal deformation of elastic component and elastic component deformation quantity is carried out
Protection, and keep higher sensitivity.
Embodiment described above only expresses embodiment of the present utility model, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the utility model patent scope can not be interpreted as.This practicality can be implemented using different combinations
New, as motor can use, concentric co-axial is installed or side is installed, and reducing gear can be slowed down by planetary gear or it
His gear, chain slowing-down structure, axis can use single-shaft configuration or left and right axle construction, and sensor can use various moments of torsion
Sensor or velocity sensor, it is noted that for the person of ordinary skill of the art, do not departing from this practicality
On the premise of new design, various modifications and improvements can be made, these belong to the scope of protection of the utility model.Cause
This, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of device for pressure measurement, including bearing, the first elastic component, the second elastic component, cushion block and force snesor, its feature exist
In, the bearing is arranged in first elastic component, and first elastic component is socketed in second elastic component, formed with
Space, is provided with the cushion block in gap, and the force snesor is arranged on the outside of second elastic component.
2. device for pressure measurement according to claim 1, it is characterised in that：First elastic component is annular, described the
The internal diameter of one elastic component is equal with bearing, is provided with arc notch on the outside of first elastic component, second elastic component includes
One oval hole, the oval hole include a semicircular part and an oval portion or parabola shaped portion, semicircular part and
Oval portion or parabola shaped portion's structure are integral, and the semicircular part on the outside of the first elastic component with being brought into close contact.
3. device for pressure measurement according to claim 2, it is characterised in that：The oval portion of second elastic component or throwing
Force snesor, the oval portion of second elastic component or the settable sensing of parabola shaped portion's outer wall are posted on the outside of thing linear portion
Device mounting groove.
4. according to the device for pressure measurement described in claim 1,2,3 any one, it is characterised in that：First elastic component and
Second elastic component is by spring steel making.
5. device for pressure measurement according to claim 1, it is characterised in that：The side of the cushion block and the first elastic component
Outside is brought into close contact, and cushion block is contacted with the first elastic component fitting position opposite side with the second elastic component for point or linear contact lay.
6. device for pressure measurement according to claim 5, it is characterised in that：The cushion block and the second elastic component contact point or
Space be present in contact line both sides.
7. device for pressure measurement according to claim 5, it is characterised in that：The cushion block is manufactured by hard solid material.
8. device for pressure measurement according to claim 6, it is characterised in that：The cushion block is ellipse, olive shape or non-
One kind in centrically symmetric shape.
9. the device for pressure measurement according to claim 1 or 3, it is characterised in that：The pressure sensor selection foil gauge,
One kind in constantan wire or Hall sensor.
10. device for pressure measurement according to claim 1, it is characterised in that：The Selection of Bearings roller bearing, roller axle
Hold, any one in thrust bearing, self-aligning bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720770158.6U CN206945179U (en) | 2017-06-29 | 2017-06-29 | A kind of device for pressure measurement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720770158.6U CN206945179U (en) | 2017-06-29 | 2017-06-29 | A kind of device for pressure measurement |
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| Publication Number | Publication Date |
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| CN206945179U true CN206945179U (en) | 2018-01-30 |
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| CN201720770158.6U Active CN206945179U (en) | 2017-06-29 | 2017-06-29 | A kind of device for pressure measurement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421665A (en) * | 2017-06-29 | 2017-12-01 | 太仓市荣驰电机有限公司 | A kind of device for pressure measurement |
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2017
- 2017-06-29 CN CN201720770158.6U patent/CN206945179U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421665A (en) * | 2017-06-29 | 2017-12-01 | 太仓市荣驰电机有限公司 | A kind of device for pressure measurement |
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