CN104236760A - Spring force value sensor for tension testing machine - Google Patents
Spring force value sensor for tension testing machine Download PDFInfo
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- CN104236760A CN104236760A CN201410458563.5A CN201410458563A CN104236760A CN 104236760 A CN104236760 A CN 104236760A CN 201410458563 A CN201410458563 A CN 201410458563A CN 104236760 A CN104236760 A CN 104236760A
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- cylinder
- pressure cylinder
- force value
- value sensor
- spring force
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Abstract
The invention discloses a spring force value sensor for a tension testing machine. The spring force value sensor comprises an upper pressure cylinder, a lower pressure cylinder, a sensing spring, a limiting flange and a displacement sensor. Each pressure cylinder is a cylinder body with the longitudinal section similarly in an H shape, wherein big-end-up counter bores are formed in the upper end face and the lower end face of the cylinder body respectively, an outer flange is arranged at the lower end of the pressure cylinder, and an axial groove is formed in the outer flange. The lower end of the upper pressure cylinder is inserted into the upper counter bore of the lower pressure cylinder to form a closed pressure cavity. The sensing spring is vertically arranged in the closed pressure cavity. The limiting flange is arranged on the outer circle of the upper pressure cylinder in a sleeving mode and is fixedly connected with the upper end plane of the lower pressure cylinder where the upper pressure cylinder is inserted. The same axial grooves are formed in the portions, corresponding to the grooves of the outer flanges of the pressure cylinders, of the inner circumferential face of the limiting flange. One end of the displacement sensor is arranged in one axial groove in the inner circumferential face of the limiting flange, and the other end of the displacement sensor is arranged in the groove formed in the outer flange of the upper pressure cylinder. The spring force value sensor has the wide range, the wide measurement interval and the overload resistance.
Description
Technical field
The present invention relates to a kind of force value sensor, refer in particular to a kind of force value sensor of marine anchor chain tension tester, belong to mechanical meaurement sensor field.
Background technology
Anchor chain drag load is tested, and is directly be clamped to by anchor chain on anchor chain lacerating machine to carry out drag load test, on same machine, not only will carries out tensile test to large-tonnage anchor chain, also will carry out tensile test to little tonnage anchor chain simultaneously, according to standard GB/T/T549-2008 requirement, same anchor chain not only will carry out working pulling force load test to it, ensure anchor chain " 5.3 ... under the drag load of regulation, Permanent extension should be no more than 5% of original length, " in addition, also to carry out Breaking load test to it, so-called anchor chain Breaking load test refers to: extract one group of three chain link or five chain links by standard-required, to its by drag load value 140% ~ 150% force value carry out Breaking load test, after experiment, ensure that anchor chain is " 5.2 ... should not occur indications of fracture under the Breaking load of regulation."; In addition for the test of new product anchor chain, first set its deflection often, then make it be out of shape by loading and reach setting, to determine the intensity of anchor chain; Therefore the force value sensor of anchor chain lacerating machine not only needs super-wide range, and will possess stronger overload capacity.Spoke type sensor generally used by puller system great force value sensor in the market, sensor internal is generally resistance-strain chip, although this sensor measurement volumes is little, precision is high, transducer range narrow range, is therefore not suitable for using on anchor chain lacerating machine.
Summary of the invention:
The object of the invention is to overcome existing force value transducer range narrow, transship problem under proteciton and defect, a kind of spring force value sensor of tension tester is provided.
For achieving the above object, the present invention is achieved by the following technical programs:
A kind of spring force value sensor of tension tester, 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 longitudinal profile similar " H " shape of up big and down small counterbore, lower end is provided with outward flange, outward flange offers an axial groove, and the lower end of described upward pressure cylinder is inserted in the upper counterbore of downforce cylinder and formed a confining pressure chamber; Described induction spring is vertically placed in confining pressure chamber; The cylindrical that described spacing flange sleeve is contained in described upward pressure cylinder is fixedly connected with the upper transverse plane of the downforce cylinder be inserted into, and the groove place that spacing flange inner peripheral surface corresponding pressure cylinder outward flange is offered offers identical axial groove; One end of institute's displacement sensors is placed in the axial groove that spacing flange inner peripheral surface offers, and the other end is placed in the groove that upward pressure cylinder outward flange offers.
Object of the present invention can also be realized further by following technical measures.
Described force value sensor is also provided with guide piece, and described guide piece refers to that the chute arranged on the projection of upward pressure cylinder arranged outside and the inner peripheral surface of spacing flange matches, and restriction upward pressure cylinder relatively rotates in downforce cylinder.
Also be provided with the center pit run through between the upper and lower counterbore of described pressure measuring cylinder, and in the center pit of upward pressure cylinder, be fixedly connected with a mandrel, the other end of mandrel can move up and down and intert in the center pit 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 tension tester of the present invention, by the pulling force sensing element of spring as puller system sensor, utilize spacing flange, ensure that spring has enough pre-police strength on a sensor, under the complete closure state of pressure chamber of this external two-way pressure cylinder, still can ensureing that the spring of sensor internal is in its elastic range, thus meet the high linearity of sensor and the requirement of high multiplicity, providing guarantee for obtaining stable sensor accuracy class; Meanwhile, by the design to spring, the range required for sensor and surveying range conveniently can be obtained.In order to improve sensor anti-overload ability, by structural design, make the pressure chamber of two-way pressure cylinder under complete closure state, the power on upward pressure cylinder can be directly delivered on downforce cylinder, thus improves the anti-overload ability of sensor.
Advantage and disadvantage of the present invention, by for illustration and explanation for the non-limitative illustration passing through preferred embodiment below, this embodiment, only provides as an example with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is the structural representation of spring force value sensor of the present invention;
Fig. 2 is the vertical view of Fig. 1.
Embodiment
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 tension tester of the present invention, comprise upward pressure cylinder 12, downforce cylinder 22, disk spring 14, spacing flange 21, displacement transducer 16 and guide piece 18, described upward pressure cylinder 12 is all rounded cylindrical mutually with downforce cylinder 22 structure, in cylindrical shell 12, middle part is provided with dividing plate 12b, cylindrical shell 12 die cavity is divided into upper lower impressions, the annular flange 12c having breach 12d is also provided with at the lower bottom part of cylindrical shell 12, and by embedded for the annular flange 12c upper impression being placed in downforce cylinder 22, form a closed pressure chamber A, described disk spring 14 is placed in pressure chamber A, described spacing flange 21 is also provided with breach 21a, corresponding with the breach 12d on the blue 12c of method annular, is fixed on the upper plane 22a of downforce cylinder 22 by screw 13, the two ends of institute's displacement sensors 16 are separately fixed in the breach 12d of annular flange 12c and the breach 21a of spacing flange 21, described guide piece 18 is that the key 18a that the outside of upward pressure cylinder 12 is fixed matches with the keyway 18b on spacing flange 21, ensures to only have relative movement between upward pressure cylinder 12 and lower shell 22, 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, in the lower impressions of upper shell 12, be fixed wtih a pipe mandrel 15 by the tapped through hole on dividing plate 12b and locate for disk spring 14; And dividing plate 12b upper screwed hole is through hole; Dividing plate 22b between the upper lower impressions of downforce cylinder 22 is provided with the through hole being greater than mandrel 15 diameter along cylindrical shell axis.
The upper and lower end face of described upward pressure cylinder 12, downforce cylinder 22 is equipped with threaded hole, with between facilitating mutually or with the connection of equipment; Install for the ease of sensor and connect, improve the rigidity of sensor, the present embodiment pressure measuring cylinder upper impression diameter is greater than lower impressions diameter, as d11 > d12, upward pressure cylinder 12 outer diameter D 11 is greater than the lower impressions diameter d 22 of downforce cylinder, the annular flange 12c outer diameter D 12 of upward pressure cylinder 12 and upper impression diameter d 21 clearance fit of downforce cylinder, ensure that upward pressure cylinder 12 is mobile smooth and easy in 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 coefficient k of check bit displacement sensor 16; The present embodiment sensor initial tension of spring (being greater than spring minimal linear pressure) is 108kN, and sensor spring minimum pressure displayed value is 120kN; Sensor spring maximum pressure displayed value is 1200kN; Sensor displayed value is interval: in spring compressible stroke about 5% ~ 95% interval.
2), according to job requirement, sensor two ends end face is utilized to attach it on pressing machine by flange;
3), by the displacement transducer 16 on pressure transducer, be connected with computing machine with signal transmitting device by wire, and keep Measurement channel corresponding with Computer display interface phase;
4), measurement parameter is set, check sensor, will step 1) the parameter value input computing machine determined, the minimum value of check sensor, determine that the force value of puller system is according to " Hooke's law ":
F=120+Ek ∣ x ∣, x to be sensor when F=Fmin be 0 offset variable;
5), computer digital animation: when puller system works, when pulling force is less than 120kN, computing machine does not show, output alarm, by step 1) ~ step 4) on sensor group, add a less sensor again; When puller system works, pulling force arrive or when being greater than 120kN≤F < 1200kN, the automatic reading displayed sensor values of computing machine; When puller system works, pulling force exceeds 12000kN, computing machine is reported to the police.
6), tested, puller system off-load, system reset, powered-down, so that test next time;
In addition, the present invention can also utilize the threaded hole on sensor upper and lower end face, fixes an independently platform, utilizes platform to carry out independently pressure detection, to expand its usable range.
Claims (6)
1. a spring force value sensor for tension tester, comprises upper and lower pressure measuring cylinder, induction spring, spacing flange and displacement transducer; It is characterized in that: described pressure measuring cylinder is the cylinder that upper and lower end face is respectively equipped with longitudinal profile similar " H " shape of up big and down small counterbore, lower end is provided with outward flange, outward flange offers an axial groove, the lower end of described upward pressure cylinder is inserted in the upper counterbore of downforce cylinder and is formed a confining pressure chamber; Described induction spring is vertically placed in confining pressure chamber; The cylindrical that described spacing flange sleeve is contained in described upward pressure cylinder is fixedly connected with the upper transverse plane of the downforce cylinder be inserted into, and the groove place that spacing flange inner peripheral surface corresponding pressure cylinder outward flange is offered offers identical axial groove; One end of institute's displacement sensors is placed in the axial groove that spacing flange inner peripheral surface offers, and the other end is placed in the groove that upward pressure cylinder outward flange offers.
2. the spring force value sensor of a kind of tension tester as claimed in claim 1, it is characterized in that: described force value sensor is also provided with guide piece, described guide piece refers to that the chute arranged on the projection of upward pressure cylinder arranged outside and the inner peripheral surface of spacing flange matches, and restriction upward pressure cylinder relatively rotates in downforce cylinder.
3. the spring force value sensor of a kind of tension tester as claimed in claim 1, it is characterized in that: between the upper and lower counterbore of described pressure measuring cylinder, be also provided with the center pit run through, and in the center pit of upward pressure cylinder, being fixedly connected with a mandrel, the other end of mandrel can move up and down and intert in the center pit of downforce cylinder.
4. the spring force value sensor of a kind of tension tester as claimed in claim 3, is characterized in that: described mandrel is hollow circular-tube; Described being fixedly connected as is threaded.
5. the spring force value sensor of a kind of tension tester 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 tension tester as claimed in claim 1, is characterized in that: described induction spring is disk spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410458563.5A CN104236760B (en) | 2014-09-10 | 2014-09-10 | A kind of spring force value sensor of tensile testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN104236760A true CN104236760A (en) | 2014-12-24 |
| CN104236760B CN104236760B (en) | 2016-05-04 |
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Citations (6)
| 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 |
| JP2011158027A (en) * | 2010-02-01 | 2011-08-18 | Santest Co Ltd | Fluid pressure actuator which can detect position and load |
-
2014
- 2014-09-10 CN CN201410458563.5A patent/CN104236760B/en active Active
Patent Citations (6)
| 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 |
| JP2011158027A (en) * | 2010-02-01 | 2011-08-18 | Santest Co Ltd | Fluid pressure actuator which can detect position and load |
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| CN104236760B (en) | 2016-05-04 |
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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 |