CN107621318A - More beam type force snesors of the And of Varying Depth beam of uniform strength - Google Patents
More beam type force snesors of the And of Varying Depth beam of uniform strength Download PDFInfo
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- CN107621318A CN107621318A CN201711052842.1A CN201711052842A CN107621318A CN 107621318 A CN107621318 A CN 107621318A CN 201711052842 A CN201711052842 A CN 201711052842A CN 107621318 A CN107621318 A CN 107621318A
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- sensor body
- strain gauge
- overload protection
- protection groove
- inner chamber
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Abstract
More beam type force snesors of the And of Varying Depth beam of uniform strength, are related to force snesor.If sensor body and strain gauge paster, sensor body is provided with strain gauge paster inner chamber；Strain gauge paster inner chamber is located at the middle part of sensor body, And of Varying Depth equal strength arch chamber is provided with below strain gauge paster inner chamber, the arch (bridge) type And of Varying Depth beam of uniform strength is formed between strain gauge paster bottom wall of inner cavity and And of Varying Depth equal strength arch chamber, sensor body is provided with upper and lower overload protection groove, upper and lower overload protection groove is horizontal-extending to sensor body center line from sensor body top and the bottom left and right sides edge, antitorque beam is limited on being formed between upper overload protection groove and strain gauge paster inner chamber, the antitorque beam of lower limitation is formed between lower overload protection groove and And of Varying Depth equal strength arch chamber, sensor body right side between above upper and lower overload protection groove forms power transmission arm, sensor body is provided with upper and lower installation screw, upper installation screw is on sensor body center line, and connected with strain gauge paster inner chamber.
Description
Technical field
The present invention relates to force snesor, more particularly, to more beam type force snesors of the And of Varying Depth beam of uniform strength.
Background technology
Most more beam type force snesors domestic at present are S-type force sensors, are divided into tangent bend beam type S type sensors
With shear stress formula S type sensors.
The tangent bend beam type S types sensor uses two referring to Fig. 1, Fig. 2 and Fig. 3, the sensor inner chamber of this class formation
The through-hole structure of intersection, in inner chamber, upper-lower position pastes strain gauge, and because patch location is cambered surface, stress distribution simultaneously differs, by
It is smaller in strain gauge area, typically just used in the case where required precision is not high.
The shear stress formula S types sensor uses referring to Fig. 4, Fig. 5 and Fig. 6, the S type sensor patch inner chamber of this class formation
Single hole arrangements, finally a to also add upper and lower overload protection, strain gauge patch location is approximate with tangent bend beam type, in hole
Interior upper left and upper right, lower-left and bottom right, four strain gauges are pasted, also due to patch location is arc surface stress distribution not phase
Together, the linearity of sensor is necessarily affected, only because the smaller situation not high in required precision of strain gauge area
Under be regarded as uniform stressed.
The sensor of above-mentioned two class formation also have in addition to precision is relatively low one it is larger the defects of be exactly anti-twisting property compared with
It is weak, because sensor is installed by upper and lower screw, the particularly size sensor of small-range and little, in installation process
The exertin installation of connecting bolt can all cause sensor body (elastomer) to deform upon and influence precision or even damage sensor,
Stress contact zone relies solely on the power transmission arm of single-point up and down in use and if inner chamber is attached so there is weighed amount
Object shakes to reverse all can cause deformation to sensor.
The content of the invention
It is an object of the invention to provide the anti-twisting property and precision that can significantly improve force snesor, and effectively protection sensing
More beam type force snesors of the And of Varying Depth beam of uniform strength of deformation caused by device elastomer long-time use.
To achieve the above object, the present invention adopts the following technical scheme that：
More beam type force snesors of the And of Varying Depth beam of uniform strength, including sensor body and strain gauge paster, sensor body
Provided with strain gauge paster inner chamber；Its feature is：Strain gauge paster inner chamber is in the middle part of sensor body, strain gauge paster
Bottom of chamber wall is plane, and strain gauge paster is affixed on the bottom wall of strain gauge paster inner chamber, is provided with and uprises below strain gauge paster inner chamber
Equal strength arch chamber is spent, arch (bridge) type And of Varying Depth equal strength is formed between strain gauge paster bottom wall of inner cavity and And of Varying Depth equal strength arch chamber
Beam, sensor body are provided with upper overload protection groove and lower overload protection groove, and upper overload protection groove is by sensor body upper left-hand
Edge is horizontal-extending to sensor body center line, and lower overload protection groove is from edge on the right side of sensor body bottom into sensor body
Heart line is horizontal-extending, is formed between upper overload protection groove and strain gauge paster inner chamber and limits antitorque beam, lower overload protection groove with
And of Varying Depth equal strength forms the lower antitorque beam of limitation between encircleing chamber, between upper overload protection groove top and lower overload protection groove top
Sensor body right side forms power transmission arm, and sensor body is provided with upper installation screw and lower installation screw, upper installation screw are set
In on sensor body center line, and connected with strain gauge paster inner chamber.
Further：
The sensor body profile is the block structure that upper and lower surface is plane.
The upper overload protection groove and lower overload protection groove are flat-shaped rectangular channel.
The shape of the strain gauge paster inner chamber is trapezoidal in chamfer.
The lower installation screw is provided with 2, and on the basis of sensor body or so center line, 2 lower installation screws are in a left side
The right side is symmetrical arranged.
With traditional S types sensor ratio compared with beneficial effects of the present invention are as follows：
The present invention forms the And of Varying Depth beam of uniform strength, is combined using the And of Varying Depth beam of uniform strength and 2 antitorque beams of limitation, And of Varying Depth
Beam of uniform strength structure make it that the stress of strain gauge patch location is the uniform precision that sensor is improved from design, limits in addition
Make the introducing of antitorque beam and be fundamentally different from traditional S type sensors, greatly improve the anti-twisting property of sensor, and
Also it is effectively protected deformation caused by sensor elastomer long-time use.
Brief description of the drawings
Fig. 1~3 are respectively three kinds of traditional tangent bend beam type S type sensor construction schematic diagrames.
Fig. 4~6 are respectively three kinds of traditional shear stress formula S type sensor construction schematic diagrames.
Fig. 7 is structural representation of the embodiment of the present invention.
Embodiment
Referring to Fig. 7, a kind of more beam type force snesors of And of Varying Depth beam of uniform strength, including sensor body 1 and strain gauge patch
Piece 2.Sensor body 1 is provided with strain gauge paster inner chamber 18.Strain gauge paster inner chamber 18 is located at the middle part of sensor body 1, should
Become the bottom wall of meter paster inner chamber 18 as plane, strain gauge paster 2 is affixed on the bottom wall of strain gauge paster inner chamber 18, in strain gauge paster
The lower section of chamber 18 is provided with And of Varying Depth equal strength arch chamber 17, shape between the bottom wall of strain gauge paster inner chamber 18 and And of Varying Depth equal strength arch chamber 17
Into the arch (bridge) type And of Varying Depth beam of uniform strength 19, sensor body 1 is provided with upper overload protection groove 11 and lower overload protection groove 12, upper overload
Protector 11 is horizontal-extending to the center line of sensor body 1 from the upper left-hand of sensor body 1 edge, and lower overload protection groove 12 is by passing
Along, upper overload protection groove 11 and strain gauge paster inner chamber horizontal-extending to the center line of sensor body 1 on the right side of the bottom of sensor body 1
Antitorque beam 13 is limited on being formed between 18, it is antitorque that lower limitation is formed between lower overload protection groove 12 and And of Varying Depth equal strength arch chamber 17
Beam 14, the right side of sensor body 1 between the upper top of overload protection groove 11 and the top of lower overload protection groove 12 form power transmission arm
15, sensor body 1 is provided with upper installation screw 10 and 2 lower installation screws 16, and upper installation screw 10 is located in sensor body 1
On heart line, and connected with strain gauge paster inner chamber 18.
The profile of sensor body 1 is the block structure that upper and lower surface is plane.The upper He of overload protection groove 11
Lower overload protection groove 12 is flat-shaped rectangular channel.The shape of the strain gauge paster inner chamber 18 is trapezoidal in chamfer.The lower peace
Fill screw 16 and be provided with 2, on the basis of the center line of sensor body 1 or so, 2 lower 16 symmetrical settings of installation screw.
The quantity of strain gauge paster 2 can design on demand.
The present embodiment operation principle is as follows：
Due to being combined using the And of Varying Depth beam of uniform strength 19 and 2 antitorque beams 13 and 14 of limitation, the bottom of strain gauge paster inner chamber 18
Wall is plane, and strain gauge paster 2 is affixed on the bottom wall of strain gauge paster inner chamber 18, and such And of Varying Depth beam of uniform strength structure causes
The stress of strain gauge patch location is uniform, so as to improve the precision of sensor.When power is passed to from upper installation screw 10
Stress contact zone, because the presence of upper overload protection groove 11 and the upper antitorque beam 13 of limitation can produce one to sensor patch inner chamber 18
The effect of individual isolation, in addition because the upper antitorque thickness of beam 13 of limitation is smaller, deformation is easily produced in vertical direction, so all
Force value can be all focused on power transmission arm 15, because the effect of power can deform upon the lower antitorque beam 14 of limitation, lower overload protection groove
12 gap can diminish, and a upwardly-deformed trend is now had at " C " point in the figure 7, but because upper limitation is antitorque
The presence of beam 13, and the antitorque cantilever thickness of upper limitation is smaller, but wider, therefore drawing is played in deformation to " C " point
Effect, so as to greatly limit the deformation at " C " place, has the function that to protect sensor body 1.Upper and lower limitation is anti-
Torsion-beam can improve the torsional property of sensor elastomer during sensor installation and use.1 upper installation screw 10
With 2 lower installation screws 16 than it is traditional it is upper and lower be 1 screw installation it is more stable.In addition, sensor of the present invention
Material can be saved during manufacture, while saves installing space.
Claims (5)
1. more beam type force snesors of the And of Varying Depth beam of uniform strength, including sensor body and strain gauge paster, sensor body are set
There is strain gauge paster inner chamber；Characterized in that, strain gauge paster inner chamber is located at the middle part of sensor body, strain gauge paster inner chamber
Bottom wall is plane, and strain gauge paster is affixed on the bottom wall of strain gauge paster inner chamber, and And of Varying Depth is provided with below strain gauge paster inner chamber
Equal strength encircles chamber, and the arch (bridge) type And of Varying Depth beam of uniform strength is formed between strain gauge paster bottom wall of inner cavity and And of Varying Depth equal strength arch chamber,
Sensor body is provided with upper overload protection groove and lower overload protection groove, upper overload protection groove from sensor body upper left-hand along to
Sensor body center line is horizontal-extending, lower overload protection groove from the right side of sensor body bottom along to sensor body center line
It is horizontal-extending, formed between upper overload protection groove and strain gauge paster inner chamber and limit antitorque beam, lower overload protection groove is with uprising
Degree equal strength forms the lower antitorque beam of limitation, the sensing between upper overload protection groove top and lower overload protection groove top between encircleing chamber
Device body right side forms power transmission arm, and sensor body is provided with upper installation screw and lower installation screw, and upper installation screw is located at biography
On sensor body central line, and connected with strain gauge paster inner chamber.
2. more beam type force snesors of the And of Varying Depth beam of uniform strength as claimed in claim 1, it is characterised in that the sensor body
Profile is the block structure that upper and lower surface is plane.
3. more beam type force snesors of the And of Varying Depth beam of uniform strength as claimed in claim 1, it is characterised in that：The upper overload protection
Groove and lower overload protection groove are flat-shaped rectangular channel.
4. more beam type force snesors of the And of Varying Depth beam of uniform strength as claimed in claim 1, it is characterised in that the strain gauge paster
The shape of inner chamber is trapezoidal in chamfer.
5. more beam type force snesors of the And of Varying Depth beam of uniform strength as claimed in claim 1, it is characterised in that：The lower installation screw
Provided with 2, on the basis of sensor body or so center line, 2 lower symmetrical settings of installation screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711052842.1A CN107621318B (en) | 2017-10-30 | 2017-10-30 | Multi-beam force sensor with variable-height equal-strength beams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711052842.1A CN107621318B (en) | 2017-10-30 | 2017-10-30 | Multi-beam force sensor with variable-height equal-strength beams |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107621318A true CN107621318A (en) | 2018-01-23 |
| CN107621318B CN107621318B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711052842.1A Active CN107621318B (en) | 2017-10-30 | 2017-10-30 | Multi-beam force sensor with variable-height equal-strength beams |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4065962A (en) * | 1974-10-29 | 1978-01-03 | Gse, Inc. | Load cell |
| EP0076616A2 (en) * | 1981-10-02 | 1983-04-13 | Maatschappij Van Berkel's Patent N.V. | Load cell with overload protection system |
| RU2102710C1 (en) * | 1996-09-13 | 1998-01-20 | Закрытое акционерное общество "Инновационный центр новых технологий" | Sensor for tensometric balance |
| CN2383042Y (en) * | 1999-08-19 | 2000-06-14 | 陈玉鹏 | Quartz resonant force sensor |
| US20030006853A1 (en) * | 2001-06-11 | 2003-01-09 | Masami Yamanaka | Load sensor with use of crystal resonator |
| US20110006380A1 (en) * | 2009-07-10 | 2011-01-13 | Yamaha Corporation | Uniaxial acceleration sensor |
| WO2014193022A1 (en) * | 2013-05-30 | 2014-12-04 | Kim Tae Hee | Curved y-shaped bridge support comprising pc steel wire |
| CN205020920U (en) * | 2015-09-07 | 2016-02-10 | 成都飞机工业（集团）有限责任公司 | Pneumatic shearing machine |
| CN207335924U (en) * | 2017-10-30 | 2018-05-08 | 莆田市力天量控有限公司 | A kind of more beam type force snesors of the And of Varying Depth beam of uniform strength |
-
2017
- 2017-10-30 CN CN201711052842.1A patent/CN107621318B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4065962A (en) * | 1974-10-29 | 1978-01-03 | Gse, Inc. | Load cell |
| EP0076616A2 (en) * | 1981-10-02 | 1983-04-13 | Maatschappij Van Berkel's Patent N.V. | Load cell with overload protection system |
| RU2102710C1 (en) * | 1996-09-13 | 1998-01-20 | Закрытое акционерное общество "Инновационный центр новых технологий" | Sensor for tensometric balance |
| CN2383042Y (en) * | 1999-08-19 | 2000-06-14 | 陈玉鹏 | Quartz resonant force sensor |
| US20030006853A1 (en) * | 2001-06-11 | 2003-01-09 | Masami Yamanaka | Load sensor with use of crystal resonator |
| US20110006380A1 (en) * | 2009-07-10 | 2011-01-13 | Yamaha Corporation | Uniaxial acceleration sensor |
| WO2014193022A1 (en) * | 2013-05-30 | 2014-12-04 | Kim Tae Hee | Curved y-shaped bridge support comprising pc steel wire |
| CN205020920U (en) * | 2015-09-07 | 2016-02-10 | 成都飞机工业（集团）有限责任公司 | Pneumatic shearing machine |
| CN207335924U (en) * | 2017-10-30 | 2018-05-08 | 莆田市力天量控有限公司 | A kind of more beam type force snesors of the And of Varying Depth beam of uniform strength |
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| Publication number | Publication date |
|---|---|
| CN107621318B (en) | 2023-07-25 |
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