CN104236760B - A kind of spring force value sensor of tensile testing machine - Google Patents
A kind of spring force value sensor of tensile testing machine Download PDFInfo
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- CN104236760B CN104236760B CN201410458563.5A CN201410458563A CN104236760B CN 104236760 B CN104236760 B CN 104236760B CN 201410458563 A CN201410458563 A CN 201410458563A CN 104236760 B CN104236760 B CN 104236760B
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Abstract
The invention discloses a kind of spring force value sensor of tensile testing machine, comprise upper and lower pressure measuring cylinder, induction spring, spacing flange and displacement transducer, described pressure measuring cylinder is the cylinder that upper and lower end face is respectively equipped with vertical section similar " H " shape of up big and down small counterbore, lower end is provided with outward flange, offers an axial groove on outward flange, in the upper counterbore of the lower end insertion downforce cylinder of described upper pressure measuring cylinder, forms a confining pressure chamber; Described induction spring is vertically placed in confining pressure chamber; Described spacing flange is sleeved on the cylindrical of described upper pressure measuring cylinder and is fixedly connected with the upper transverse plane of the downforce cylinder being inserted into, and the groove place offering on spacing flange inner peripheral surface corresponding pressure cylinder outward flange offers identical axial groove; One end of described displacement transducer is placed in the axial groove that spacing flange inner peripheral surface offers, and the other end is placed in the groove that pressure measuring cylinder outward flange offers. The present invention has wider range and surveying range and anti-overload ability.
Description
Technical field
The present invention relates to a kind of power value sensor, refer in particular to a kind of power value sensor of marine anchor chain tensile testing machine,Belong to mechanical meaurement sensor field.
Background technology
Anchor chain drag load test is that anchor chain is directly clamped to and on anchor chain lacerating machine, carries out drag loadTest, on same machine, not only will carry out pull test to large-tonnage anchor chain, simultaneously also will be to little tonPosition anchor chain carries out pull test; According to standard GB/T/T549-2008 requirement, same anchor chain is not only rightIt carries out working pulling force load test, ensure anchor chain " 5.3 ... under the drag load of regulation, permanent elongationShould be no more than 5% of original length, " in addition, also to carry out Breaking load test to it, so-called anchor chain is brokenDisconnected load test refers to: extract one group of three chain link or five chain links by standard-required, it is pressed to drag load140%～150% power value of value is carried out Breaking load test, after test, ensure anchor chain " 5.2 ...Under the Breaking load of regulation, should there is not indications of fracture. "; In addition for the test of new product anchor chain, oftenFirst set its deflection, then make its distortion reach setting by loading, to determine the intensity of anchor chain; ThereforeThe power value sensor of anchor chain lacerating machine not only needs super-wide range, and will possess stronger overload capacity.Puller system great force value sensor in the market is generally used spoke type sensor, and sensor internal is generally electricityResistance strain chip, although this sensor measurement volumes is little, precision is high,, transducer range narrow range,Therefore be not suitable for using on anchor chain lacerating machine.
Summary of the invention:
The object of the invention is to overcome existing power value transducer range narrow, transship problem under proteciton and defect,A kind of spring force value sensor of tensile testing machine is provided.
For achieving the above object, the present invention is achieved by the following technical programs:
A spring force value sensor for tensile testing machine, comprises upper and lower pressure measuring cylinder, and induction spring is spacingFlange and displacement transducer, described pressure measuring cylinder is the vertical section that upper and lower end face is respectively equipped with up big and down small counterboreThe cylinder of similar " H " shape, lower end is provided with outward flange, offers an axial groove on outward flange, described inIn the upper counterbore of the lower end insertion downforce cylinder of upper pressure measuring cylinder, form a confining pressure chamber; Described induction springVertically be placed in confining pressure chamber; Described spacing flange is sleeved on the cylindrical of described upper pressure measuring cylinder and is insertedThe upper transverse plane of the downforce cylinder entering is fixedly connected with, and on spacing flange inner peripheral surface corresponding pressure cylinder outward flange, opensIf groove place offer identical axial groove; One end of described displacement transducer is placed in spacing flangeIn the axial groove that periphery offers, the other end is placed in the groove that pressure measuring cylinder outward flange offers.
Object of the present invention can also further realize by following technical measures.
Described power value sensor is also provided with guider, and described guider refers in upper pressure measuring cylinder outside and establishesThe projection of putting matches with the chute arranging on the inner peripheral surface of spacing flange, and in restriction, pressure measuring cylinder is in downforceIn cylinder, relatively rotate.
Between the upper and lower counterbore of described pressure measuring cylinder, be also provided with the centre bore running through, and at the centre bore of upper pressure measuring cylinderIn be fixedly connected with a mandrel, the other end of mandrel can move up and down and intert in the centre bore of downforce cylinder.Wherein said mandrel is hollow circular-tube; Described being fixedly connected as is threaded.
Induction spring described above is disk spring.
The spring force value sensor of a kind of tensile testing machine of the present invention, by spring as puller system sensorPulling force sensing element, utilizes spacing flange, ensures that spring has enough pre-police strength on sensor, and this is externalUnder the complete closure state of pressure chamber of upper and lower pressure measuring cylinder, still can ensure that the spring of sensor internal is at its bulletWithin the scope of property, thereby the high linearity of sensor and the requirement of high multiplicity are met, for obtaining stable biographySensor certainty of measurement provides guarantee; Meanwhile, by the design to spring, can conveniently obtain sensor instituteThe range and the surveying range that need. In order to improve sensor anti-overload ability, by structural design, makeThe pressure chamber of downforce cylinder is under complete closure state, and the power on upper pressure measuring cylinder can be directly delivered to downforceOn cylinder, thereby improve the anti-overload ability of sensor.
Advantage and disadvantage of the present invention, by illustrating by the non-limitative illustration of preferred embodiment below andExplain, this embodiment, only provides as an example with reference to accompanying drawing.
Brief description of the drawings
Fig. 1 is the structural representation of spring force value sensor of the present invention;
Fig. 2 is the top view of Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described:
As depicted in figs. 1 and 2, for the spring force value sensor of a kind of tensile testing machine of the present invention, compriseUpper pressure measuring cylinder 12, downforce cylinder 22, disk spring 14, spacing flange 21, displacement transducer 16 and guidingDevice 18, described upper pressure measuring cylinder 12 is all rounded cylindrical mutually with downforce cylinder 22 structures, in cylindrical shell 12 is interiorPortion is provided with dividing plate 12b, and cylindrical shell 12 die cavities are divided into upper lower impressions, is also provided with and has at the lower bottom part of cylindrical shell 12The annular flange 12c of breach 12d, and by the embedded annular flange 12c mo(u)ld top half that is placed in downforce cylinder 22In chamber, form the pressure chamber A of a sealing; Described disk spring 14 is placed in pressure chamber A; Described limitPosition flange 21 is also provided with breach 21a, corresponding with the breach 12d on the blue 12c of method annular, by screw 13Be fixed on the upper plane 22a of downforce cylinder 22; The two ends of described displacement transducer 16 are separately fixed at ringIn the breach 12d of shape flange 12c and the breach 21a of spacing flange 21; Described guider 18 is upper pressureThe fixing key 18a in outside of power cylinder 12 matches with the keyway 18b on spacing flange 21, pressure measuring cylinder in guarantee12 and lower shell 22 between only relatively move, can not relatively rotate.
In addition, be provided with tapped through hole at the dividing plate 12b of upper shell 12 along cylindrical shell axis, at upper shell 12Lower impressions in, be fixed wtih a pipe mandrel 15 for disk spring 14 by the tapped through hole on dividing plate 12bLocation; And dividing plate 12b upper screwed hole is through hole; Dividing plate 22b between the upper lower impressions of downforce cylinder 22Be provided with the through hole that is greater than mandrel 15 diameters along cylindrical shell axis.
The upper and lower end face of described upper pressure measuring cylinder 12, downforce cylinder 22 is equipped with screwed hole, between facilitating mutuallyOr with being connected of equipment; Connect for the ease of installation of sensors, improve the rigidity of sensor, the present embodiment is pressedPower cylinder upper impression diameter is greater than lower impressions diameter, and as d11 > d12, upper pressure measuring cylinder 12 outer diameter D 11 are greater than and press downThe lower impressions diameter d 22 of power cylinder, the annular flange 12c outer diameter D 12 of upper pressure measuring cylinder 12 is upper with downforce cylinderDie cavity diameter d 21 matched in clearance, in guarantee, pressure measuring cylinder 12 is smooth and easy in the interior movement of downforce cylinder 22.
In addition, the measuring method of the present embodiment comprises the following steps:
1), the elastic modulus E of detected pressures sensor spring 14, the shift transformation of check bit displacement sensor 16Coefficient k; The present embodiment sensor initial tension of spring (being greater than spring minimal linear pressure) is 108kN, sensingDevice spring minimum pressure show value is 120kN; Sensor spring maximum pressure show value is 1200kN; SensingDevice show value interval: in the compressible stroke of spring approximately 5%～95% interval.
2), according to job requirement, utilize sensor two ends end face to attach it on forcing press by flange;
3), by the displacement transducer on pressure sensor 16, by wire and signal transmitting device and computer phaseConnect, and it is corresponding with Computer display interface phase to keep measuring passage;
4), measurement parameter is set, check sensor, will be step 1) definite parameter value input computer,The minimum of a value of check sensor, determine that according to " Hooke's law " force value of puller system is:
F=120+Ek ∣ x ∣, x is that sensor is 0 offset variable in the time of F=Fmin;
5), computer data processing: in the time that puller system is worked, when pulling force is less than 120kN, computer is not aobviousShow, output alarm, by step 1)～step 4) on sensor group, add again a less sensor;In the time that puller system is worked, when pulling force arrives or is greater than 120kN≤F < 1200kN, the automatic reading displayed of computerSensor values; When in the time that puller system is worked, pulling force exceeds 12000kN, computer is reported to the police.
6), tested, puller system off-load, system reset, powered-down, so that next time test;
In addition, the present invention can also utilize the screwed hole on sensor upper and lower end face, fixes one and independently puts downPlatform, utilizes platform to carry out independently pressure detecting, to expand its scope of application.
Claims (6)
1. a spring force value sensor for tensile testing machine, comprises upper and lower pressure measuring cylinder, and induction spring is spacingFlange and displacement transducer; It is characterized in that: it is up big and down small that described pressure measuring cylinder is that upper and lower end face is respectively equipped withThe cylinder of vertical section similar " H " shape of counterbore, the lower end of described upper pressure measuring cylinder is provided with outward flange, outward flangeOn offer an axial groove, the lower end of described upper pressure measuring cylinder is inserted in the upper counterbore of downforce cylinder and is formed oneIndividual confining pressure chamber; Described induction spring is vertically placed in confining pressure chamber; Described spacing flange is sleeved onOn the cylindrical of described upper pressure measuring cylinder, be fixedly connected with the upper transverse plane of the downforce cylinder being inserted into, in spacing flangeThe groove place offering on pressure measuring cylinder outward flange in periphery correspondence offers identical axial groove; Described displacementOne end of sensor is placed in the axial groove that spacing flange inner peripheral surface offers, and the other end is placed inIn the groove that pressure measuring cylinder outward flange is offered.
2. the spring force value sensor of a kind of tensile testing machine as claimed in claim 1, is characterized in that:Described power value sensor is also provided with guider, and described guider refers in upper pressure measuring cylinder arranged outsideThe chute arranging on the inner peripheral surface of projection and spacing flange matches, and in restriction, pressure measuring cylinder is in downforce cylinderRelatively rotate.
3. the spring force value sensor of a kind of tensile testing machine as claimed in claim 1, is characterized in that:Between the upper and lower counterbore of described pressure measuring cylinder, be also provided with the centre bore running through, and solid in the centre bore of upper pressure measuring cylinderSurely be connected with a mandrel, the other end of mandrel can move up and down and intert in the centre bore of downforce cylinder.
4. the spring force value sensor of a kind of tensile testing machine as claimed in claim 3, is characterized in that:Described mandrel is hollow circular-tube; The be fixedly connected as screw thread of described mandrel in the centre bore of upper pressure measuring cylinder connectsConnect.
5. the spring force value sensor of a kind of tensile testing machine as claimed in claim 1, is characterized in that:The described screw that is fixedly connected as connects.
6. the spring force value sensor of a kind of tensile testing machine as claimed in claim 1, is characterized in that:Described induction spring is disk spring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410458563.5A CN104236760B (en) | 2014-09-10 | 2014-09-10 | A kind of spring force value sensor of tensile testing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410458563.5A CN104236760B (en) | 2014-09-10 | 2014-09-10 | A kind of spring force value sensor of tensile testing machine |
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| CN104236760A CN104236760A (en) | 2014-12-24 |
| CN104236760B true CN104236760B (en) | 2016-05-04 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2572177A1 (en) * | 1984-10-19 | 1986-04-25 | Moret Claude | Torque indicator or limiter device |
| CN1111013A (en) * | 1994-03-25 | 1995-11-01 | Smc株式会社 | Shock load sensor |
| US5713238A (en) * | 1994-08-17 | 1998-02-03 | Nai Anchorlok, Inc. | Spring brake actuator with spring force measurement |
| CN200982900Y (en) * | 2006-09-22 | 2007-11-28 | 宁波杉工结构监测与控制工程中心有限公司 | A pressure shift integrated sensor |
| CN201133856Y (en) * | 2007-12-28 | 2008-10-15 | 北京谊安医疗系统股份有限公司 | Pressure detector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5383535B2 (en) * | 2010-02-01 | 2014-01-08 | サンテスト株式会社 | Fluid pressure actuator with position and load detection |
-
2014
- 2014-09-10 CN CN201410458563.5A patent/CN104236760B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2572177A1 (en) * | 1984-10-19 | 1986-04-25 | Moret Claude | Torque indicator or limiter device |
| CN1111013A (en) * | 1994-03-25 | 1995-11-01 | Smc株式会社 | Shock load sensor |
| US5713238A (en) * | 1994-08-17 | 1998-02-03 | Nai Anchorlok, Inc. | Spring brake actuator with spring force measurement |
| CN200982900Y (en) * | 2006-09-22 | 2007-11-28 | 宁波杉工结构监测与控制工程中心有限公司 | A pressure shift integrated sensor |
| CN201133856Y (en) * | 2007-12-28 | 2008-10-15 | 北京谊安医疗系统股份有限公司 | Pressure detector |
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| CN104236760A (en) | 2014-12-24 |
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Application publication date: 20141224 Assignee: Jiangsu University of Science and Technology Technology Transfer Center Co.,Ltd. Assignor: JIANGSU University OF SCIENCE AND TECHNOLOGY Contract record no.: X2022980022975 Denomination of invention: A Spring Force Sensor for Tensile Testing Machine Granted publication date: 20160504 License type: Common License Record date: 20221128 |
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Assignee: Jiangsu University of Science and Technology Technology Transfer Center Co.,Ltd. Assignor: JIANGSU University OF SCIENCE AND TECHNOLOGY Contract record no.: X2022980022975 Date of cancellation: 20230310 |