CN208704933U - A kind of bearing pressure sensor - Google Patents
A kind of bearing pressure sensor Download PDFInfo
- Publication number
- CN208704933U CN208704933U CN201821447370.XU CN201821447370U CN208704933U CN 208704933 U CN208704933 U CN 208704933U CN 201821447370 U CN201821447370 U CN 201821447370U CN 208704933 U CN208704933 U CN 208704933U
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- China
- Prior art keywords
- round tube
- bearing
- planar portions
- pressure sensor
- cambered surface
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Abstract
The utility model discloses a kind of bearing pressure sensors, including round tube, bearing and rotatable axis, the bearing is set in round tube, the outer ring of the bearing is fixed with round tube, inner ring is fixed with rotatable axis, the round tube lateral surface circumference is equipped with planar portions, and the planar portions are not limited to plane, and the planar portions are equipped with shape changing detection unit；The round tube inner wall is equipped with the cambered surface of recess.The cambered surface that cutting seam and inside of the utility model on the outside of round tube equipped with segmentation plane portion are equipped with recess enables the output signal of the shape changing detection unit of planar portions really to react the pressure of bearing for eliminating the stress generated when sensor installation；The utility model structure is simple, and production and processing is convenient, at low cost, installation standardization, and versatility is good.
Description
Technical field
The utility model belongs to bearing pressure detection technique field, and in particular to a kind of bearing pressure sensor.
Background technique
In product of certain rotation central axis for needing to detect inside a round tube to the pressure of tube wall, such as producing line mechanical arm
Snatch weight, the axis of rotation praise weight, for real-time detection people foot to the pedal force etc. of pedal on electric assisted bicycle, this
The acquisition of kind power, generally torsion type and pressure type, torsion type are to install casing again on rotatable axis to bear to turn round at present
Square, the detection of power is realized in casing torsional deflection in rotation by magnetic field or electric field change, or casing is not added and directly detects axis
Torsional deformation.Pressure type generally installs pressure sensor on the outside of chain position or the end face of axis, detects chain tension or axis
Pressure, pressure of the approximate or indirect acquisition bearing to the round tube wall installed.
Due to the particularity of these pressure textures, such as gap very little, Structural strength calls are high, requirement of appearance and existing
Electronic technology state limit, existing such force snesor come with some shortcomings, and torsion type has in the presence of unilateral acquisition data
Problem, the multidirectional pressure that can not be detected simultaneously realize that the material of this detection is also expensive and processing is inconvenient.It is existing to use pressure
Detection, although detection pressure functional may be implemented, in the presence of structure is complicated, installation is inconvenient, difficulty of processing is big, appearance is bad.
In addition, the stress zone that pressure sensor generates when installing carrys out interference signal, leads to the mistake output of control system, react too late
When.
Summary of the invention
Goal of the invention: the influence by non-demand force, installation physical examination are easy for the pressure signal generated in the prior art
The problem of limitation, the purpose of this utility model is to provide a kind of bearing pressure sensors.
Technical solution: to solve the above problems, the utility model adopts the following technical solutions:
A kind of bearing pressure sensor, including round tube, bearing and rotary axis, the bearing are set in round tube,
The outer ring of the bearing is fixed with round tube, and inner ring is fixed with rotary axis, and the round tube lateral surface circumference is equipped with flat
The cutting in face and segmentation plane portion is stitched, and the planar portions are not limited to plane, and the planar portions are equipped with shape changing detection unit, institute
State the cambered surface that round tube inner wall is equipped with recess.
Preferably, the cambered surface is symmetrically arranged with two, is extended from cutting seam position to the direction away from planar portions.
Preferably, the width of the cambered surface is not less than bearing thickness.
Preferably, planar portions are cut into one end by the way of Wire EDM or laser cutting by the planar portions
The cantilevered fashion being connected on round tube, the other end are swingable.
Preferably, the shape changing detection unit can answer for resistance strain gage, semiconductor gauge, capacitor grid transducer or magnetic
Become coating.
Preferably, the outer ring of bearing one end swingable with planar portions is intersected.
Preferably, more than one pressure sensor, each sensor can be equipped on the periphery of the round tube
Cutting seam including the planar portions and segmentation plane portion that are located on round tube lateral surface circumference, further include be located at it is recessed on round tube inner wall
Sunken cambered surface.
Preferably, more than one pressure sensor can be equipped on the round tube axial direction, each pressure passes
Sensor includes the cutting seam of the planar portions and segmentation plane portion on round tube lateral surface, further includes the recess being located on round tube inner wall
Cambered surface.
The utility model has the advantages that compared with the prior art, the utility model has the following beneficial effects:
(1) the utility model uses pressure detecting mode, and according to the quantity of setting sensor, multiple directions may be implemented
Pressure detecting.(2) the utility model is equipped with cambered surface on the inside of round tube, and round tube arm is equipped with cutting seam, can eliminate sensor installation
When the stress that generates to the effect of signals of real bearing pressure.(3) the utility model structure is simple, and production and processing is convenient, at
This is low, installation standardization, and versatility is good.(4) the utility model can be used for electric assisted bicycle, robot arm, machinery
Arm etc., which needs to detect, has rotation axis on the product of installation position pressure in round tube.
Detailed description of the invention
Fig. 1 is the end view of bearing pressure sensor；
Fig. 2 is the axial cross-sectional views of bearing pressure sensor；
Fig. 3 is the outside schematic diagram in bearing pressure sensor plane portion and cutting seam；
Fig. 4 is the radial section schematic diagram of 1 middle (center) bearing pressure sensor of embodiment；
Fig. 5 is the axial cross-sectional views of 2 middle (center) bearing pressure sensor of embodiment；
Wherein, planar portions 1, round tube 2, bearing 3, axis 4, cambered surface 5, cutting seam 6.
Specific embodiment
The utility model is further described below combined with specific embodiments below.
Embodiment 1
A kind of bearing pressure sensor, the round tube 2 being made into including metal material, bearing 3 and rotatable axis 4, institute
Bearing 3 is stated in round tube 2, the outer ring of the bearing 3 and round tube 2 are fixed, and inner ring and rotary axis 4 are fixed, described
Round tube lateral surface circumference is equipped with the cutting seam 6 in planar portions 1 and segmentation plane portion, and inner wall is equipped with the cambered surface 5 of recess, the plane
Portion is not limited to plane.
It is set in the present embodiment 1 there are two pressure sensor, described two pressure sensors are parallel to each other and relative to round tube
Diameter where horizontal plane it is symmetrical, as shown in figure 4, described two pressure sensors respectively include being located on round tube lateral surface circumference
Planar portions 1 and segmentation plane portion cutting seam 6, further include the cambered surface 5 for the recess being located on round tube inner wall.The planar portions 1
There is continuous cutting seam 6 in neighbouring three face, and the planar portions 1 are equipped with shape changing detection unit, and shape changing detection unit can be resistance
Foil gauge, semiconductor gauge, capacitor grid transducer or magnetic strain coating；2 inner wall of round tube is equipped with the cambered surface 5 of recess.It is described
Cambered surface 5 is symmetrically arranged with two, is to extend since 6 positions are stitched in cutting to the direction away from planar portions 1, the cambered surface 5
Width is not less than bearing thickness.The present embodiment 1 forms 2 symmetrical and independent pressure sensors, can detect rotation respectively
Formed symmetrical radial 2 directions pressure.
The utility model use pressure detecting mode, can in round tube lateral surface multiple pressure sensors provided circumferentially about,
The detection of multi-direction pressure may be implemented in this way, the cambered surface and cutting seam can eliminate the stress that sensor installation generates,
The shape changing detections elements such as shape changing detection component resistance foil gauge, when the axis of rotation is under pressure, axis are installed in planar portions
Pressure is applied to round tube by bearing, the planar portions of sensor is made to generate bending deformation, shape changing detection element generates signal, provides
To control system.
Embodiment 2
A kind of bearing pressure sensor, 2, two bearings 3 of round tube being made into including nonmetallic materials and it is rotatable in
Axis 4, described two bearings 3 are set in round tube 2, and the outer ring of described two bearings 3 is fixed with round tube 2, inner ring with can turn
Dynamic axis 4 is fixed, and the round tube lateral surface circumference is equipped with the cutting seam 6 in 2 planar portions 1 and 2 segmentation plane portions, and each
From the cambered surface 5 of recess, the planar portions are not limited to plane.
In 2 pressure sensors that are axially arranged with of round tube in the present embodiment 2, two pressure sensors are generally aligned in the same plane
It is interior, as shown in figure 5,2 pressure sensors respectively include the planar portions 1 being located on round tube lateral surface circumference and segmentation plane
The cutting seam 6 in portion, further includes the cambered surface 5 for the recess being located on round tube inner wall.The planar portions 1 are equipped with shape changing detection unit；
The shape changing detection unit can be resistance strain gage, semiconductor gauge, capacitor grid transducer or magnetic strain coating.The round tube
2 inner walls are equipped with the cambered surface 5 of recess.The cambered surface 5 is symmetrically arranged with two, is to start in cutting seam position, to away from plane
The direction in portion 1 extends, and the width of the cambered surface 5 is not less than bearing thickness, described with a thickness of the distance between bearing both ends of the surface.Institute
The stress that sensor installation generates can be eliminated by stating cambered surface.The planar portions 1 use the side of Wire EDM or laser cutting
Planar portions 1 are cut into the cantilevered fashion that one end is connected on round tube by formula, and the cutting seam of generation is also the same to be used to eliminate sensing
Influence of the stress that device generates when installing to the signal of real bearing pressure.One end face of the bearing 3 and planar portions 1 can
Intersected with one end of swing.It is symmetrically arranged with 2 independent pressure sensors on the circular tube external wall, rotation can be detected respectively
The pressure of the respective pressure in left and right ends of the axis turned, rotatable axis flattens what face 1 can be swung by bearing
One end, cutting slit at cantilever design generate bending deformation, set detection unit generates deformation signal in planar portions 1, through putting
Big circuit obtains suitable voltage or current signal, is supplied to control system.
The utility model uses pressure detecting mode, multidirectional pressure detecting may be implemented in this way, in rotatable
When axis is under pressure, axis applies pressure to round tube by bearing, and the planar portions of round tube is made to generate bending deformation, institute in planar portions
If detection unit generates deformation signal, it is supplied to control system.
Claims (8)
1. a kind of bearing pressure sensor, which is characterized in that including round tube (2), bearing (3) and rotary axis (4), institute
Bearing (3) are stated in round tube (2), the outer ring and round tube (2) of the bearing (3) are fixed, inner ring and rotary axis (4)
Fixed, round tube (2) the lateral surface circumference is equipped with planar portions (1) and (6) are stitched in the cutting in segmentation plane portion, and the planar portions are not
It is limited to flat shape, the planar portions (1) are equipped with shape changing detection unit, and round tube (2) inner wall is equipped with the cambered surface of recess
(5).
2. bearing pressure sensor according to claim 1, which is characterized in that the cambered surface (5) is symmetrically arranged with two, is
Extend from cutting seam (6) position to the direction away from planar portions (1).
3. bearing pressure sensor according to claim 1, which is characterized in that the width of the cambered surface (5) is not less than axis
Hold (3) thickness.
4. bearing pressure sensor according to claim 1, which is characterized in that the planar portions (1) use wire electric discharge
Planar portions (1), are cut into the cantilevered fashion that one end is connected on round tube, the other end can be put by the mode of cutting or laser cutting
It is dynamic.
5. bearing pressure sensor according to claim 1, which is characterized in that the shape changing detection unit is resistance-strain
Piece, semiconductor gauge, capacitor grid transducer or magnetic strain coating.
6. bearing pressure sensor according to claim 1, which is characterized in that the outer ring of the bearing (3) and planar portions
(1) swingable one end intersection.
7. bearing pressure sensor according to claim 1, which is characterized in that can be on the periphery of the round tube (2)
Equipped with more than one pressure sensor, each sensor include the planar portions (1) being located on round tube lateral surface circumference and
(6) are stitched in the cutting in segmentation plane portion, further include the cambered surface (5) for the recess being located on round tube inner wall.
8. bearing pressure sensor according to claim 1, which is characterized in that can be on round tube (2) axial direction
Equipped with more than one pressure sensor, each pressure sensor includes the planar portions (1) on round tube lateral surface and divides
(6) are stitched in the cutting in cutting plane portion, further include the cambered surface (5) for the recess being located on round tube inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821447370.XU CN208704933U (en) | 2018-09-04 | 2018-09-04 | A kind of bearing pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821447370.XU CN208704933U (en) | 2018-09-04 | 2018-09-04 | A kind of bearing pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208704933U true CN208704933U (en) | 2019-04-05 |
Family
ID=65946102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821447370.XU Active CN208704933U (en) | 2018-09-04 | 2018-09-04 | A kind of bearing pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208704933U (en) |
-
2018
- 2018-09-04 CN CN201821447370.XU patent/CN208704933U/en active Active
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