CN2231412Y - Claw spring sensitive element force measuring sensor - Google Patents
Claw spring sensitive element force measuring sensor Download PDFInfo
- Publication number
- CN2231412Y CN2231412Y CN 95242856 CN95242856U CN2231412Y CN 2231412 Y CN2231412 Y CN 2231412Y CN 95242856 CN95242856 CN 95242856 CN 95242856 U CN95242856 U CN 95242856U CN 2231412 Y CN2231412 Y CN 2231412Y
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- CN
- China
- Prior art keywords
- sensing element
- elastic sensing
- force measuring
- pressure
- sensitive element
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a claw spring sensitive element force measuring sensor, which is characterized in that a spring sensitive element forms a claw-shaped structure which is always in compression state no matter pull or pressure is applied. The force measuring mechanism stress state of the structure changes the prior center compression state to eccentric compression state of the bending combination, the sensitivity of the sensor is increased, compressive strength and axial stiffness change little, and the utility model is especially suitable for the force measuring situation which gives attention to both stiffness and sensitivity.
Description
The utility model belongs to force cell design and manufacturing technology field, particularly a kind of strain-type force sensor.
Existing strain-type force sensor inner elastomeric sensitive element structure form roughly can be divided into two big classes, and a class is to be the uniaxial force type elastic sensing element of feature with drum type brake or column type, be characterized in that rigidity is big, but sensitivity is low; Another kind of is to be the flexural loading type of feature with beam type, board-like or ring type, and the characteristics of this class elastic sensing element are highly sensitive, but rigidity is low.Because above-mentioned two class elastic sensing elements limit by its version, the two can't take into account rigidity and sensitivity, thereby is difficult to satisfy some rigidity and sensitivity are all had the use occasion of strict demand, has caused the use limitation of this type of force cell.
The purpose of this utility model provides a kind of claw flap type elastic sensing element force cell that can take into account rigidity and sensitivity requirement simultaneously.
The utility model is realized by following technical scheme: the cylinder waist that the bottom is had through hole forms annular groove through turning, after symmetry is opened cross or rice word groove vertically from mouth cylinder, cylindrical wall forms the radial strut claw flap type structure of non-homogeneous wall thickness, in pawl lobe outer surface groove, paste foil gauge and form the full-bridge force measuring machine, the core bar that has the playing surface of the table passes the through hole and the pressure-bearing packing ring of elastic sensing element, playing surface of the table pressure rings, fix with set nut, the core bar threaded end connects with the tension and compression head, the playing surface of the table of core bar one end is stressed and act on cylinder bottom when applying pulling force, the foil gauge tension distortion on pawl lobe surface, the core bar thread end pressure rings playing surface of the table is stressed when exerting pressure, act on pawl lobe end by the pressure-bearing packing ring, the foil gauge compressive deformation in its surface groove.This version makes former cause cylinder bottom centre pressured state be converted into the pawl lobe eccentric artesian condition of combination that bent, and the force measuring machine dependent variable is increased, and sensitivity improves., because axial displacement makes force measuring machine that higher axial compression rigidity be arranged much smaller than the deformation characteristics of lateral shift.
The utility model effect and advantage compared with prior art is that it has kept drum type brake or pillar elastic sensing element compact conformation, characteristics that compressional stiffness is big, possessed board-like, the highly sensitive characteristics of beam type flexural loading type elastic sensing element simultaneously, being specially adapted to both needs to bear big pressure, needs highly sensitive dynamometry occasion again.
Description of drawings of the present utility model.
Fig. 1 is an elevational cross-sectional view of the present utility model.
Figure is that A-A of the present utility model is to cut-open view.
Below by accompanying drawing the utility model is further described, this force cell is mainly by core bar [1], elastic sensing element [2], sheath [3], foil gauge [4], pressure-bearing packing ring [5], the pressure rings [6] of dribbling table top, set nut [7], sheath end cap compositions such as [10], elastic sensing element [2] is to be processed into annular groove with the cylinder that the bottom has a through hole through turning, after symmetry is opened cross or rice word groove vertically from mouth cylinder, cylindrical wall forms the radial strut claw flap type structure of non-homogeneous wall thickness, pastes foil gauge and form the full-bridge force measuring machine in pawl lobe outside surface arc groove.The core bar [1] that has the playing surface of the table passes elastic sensing element [2] bottom through-hole and pressure-bearing packing ring [5], playing surface of the table pressure rings [6], with set nut [7] fixing after, use sheath end cap [10] again, nail [8] is encapsulated in the sheath [3], sensor mounting hole [9] can be fixed with afterburning head bracket, but between pressure rings [6] and the pressure-bearing packing ring [5] 1～2 millimeter gap is arranged, the inwall of the periphery of elastic sensing element [2] and pressure-bearing packing ring [5] and sheath [3] is a clearance fit, 1～2 millimeter gap is arranged at the bottom of the bottom face of elastic sensing element [2] and sheath [3], makes this gap dieback of time spent when core bar [1] is stressed.Therefore, no matter apply pulling force or pressure, elastic sensing element always is in pressured state, but the dependent variable that foil gauge measures is owing to different two parameters that obtain opposite sign but equal magnitude of the eccentric artesian condition of force measuring machine.
Claims (2)
1. claw flap type elastic sensing element force cell, mainly by core bar, sheath, pressure-bearing packing ring, playing surface of the table pressure rings, elastic sensing element, compositions such as foil gauge, it is characterized in that elastic sensing element is the radial strut claw flap type structure of non-homogeneous wall thickness, foil gauge sticks on the interior full-bridge force measuring machine of forming of pawl lobe outside surface arc groove of elastic sensing element, the core bar thread end passes elastic sensing element bottom through-hole and pressure-bearing packing ring, playing surface of the table pressure rings, fixes with set nut.
2. claw flap type elastic sensing element force cell according to claim 1 is characterized in that elastic sensing element is eccentric bearing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95242856 CN2231412Y (en) | 1995-03-11 | 1995-03-11 | Claw spring sensitive element force measuring sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95242856 CN2231412Y (en) | 1995-03-11 | 1995-03-11 | Claw spring sensitive element force measuring sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2231412Y true CN2231412Y (en) | 1996-07-17 |
Family
ID=33883722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95242856 Expired - Fee Related CN2231412Y (en) | 1995-03-11 | 1995-03-11 | Claw spring sensitive element force measuring sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2231412Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561326B (en) * | 2009-06-02 | 2010-09-22 | 李连秀 | Multi-directional load transducer |
| CN102327902A (en) * | 2011-10-17 | 2012-01-25 | 北京中冶设备研究设计总院有限公司 | Device and method for measuring axial force of working roll of slab strip hot rolling mill |
| CN107976267A (en) * | 2017-12-18 | 2018-05-01 | 中国石油大学(北京) | A kind of outer force measuring device of marine riser and measuring method |
| CN112145511A (en) * | 2020-09-25 | 2020-12-29 | 长安大学 | Movement mechanism locking device and locking method based on inverse flexoelectric effect |
-
1995
- 1995-03-11 CN CN 95242856 patent/CN2231412Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561326B (en) * | 2009-06-02 | 2010-09-22 | 李连秀 | Multi-directional load transducer |
| CN102327902A (en) * | 2011-10-17 | 2012-01-25 | 北京中冶设备研究设计总院有限公司 | Device and method for measuring axial force of working roll of slab strip hot rolling mill |
| CN102327902B (en) * | 2011-10-17 | 2013-03-06 | 北京中冶设备研究设计总院有限公司 | Device and method for measuring axial force of working roll of slab strip hot rolling mill |
| CN107976267A (en) * | 2017-12-18 | 2018-05-01 | 中国石油大学(北京) | A kind of outer force measuring device of marine riser and measuring method |
| CN107976267B (en) * | 2017-12-18 | 2023-05-05 | 中国石油大学(北京) | External force measuring device and method for marine riser |
| CN112145511A (en) * | 2020-09-25 | 2020-12-29 | 长安大学 | Movement mechanism locking device and locking method based on inverse flexoelectric effect |
| CN112145511B (en) * | 2020-09-25 | 2021-11-12 | 长安大学 | Movement mechanism locking device and locking method based on inverse flexoelectric effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |