CN204389075U - A kind of multilayer force value sensor for tension tester - Google Patents
A kind of multilayer force value sensor for tension tester Download PDFInfo
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- CN204389075U CN204389075U CN201420516256.3U CN201420516256U CN204389075U CN 204389075 U CN204389075 U CN 204389075U CN 201420516256 U CN201420516256 U CN 201420516256U CN 204389075 U CN204389075 U CN 204389075U
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- measuring cylinder
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Abstract
A kind of multilayer force value sensor for tension tester, comprise pressure measuring cylinder, induction spring, spacing flange and displacement transducer, described pressure measuring cylinder is the cylinder that upper and lower end face is provided with longitudinal profile similar " H " shape of up big and down small counterbore, lower end is provided with outward flange, outward flange has axial groove, and the Multi-Layer and Multi-Cavity tower structure body forming in the upper counterbore of another pressure measuring cylinder and have confining pressure chamber is inserted in the lower end of pressure measuring cylinder; Described induction spring is vertically placed in confining pressure chamber; The cylindrical that described spacing flange sleeve is contained in pressure measuring cylinder is fixedly connected with the upper transverse plane being inserted into pressure measuring cylinder, and the groove place that spacing flange inner peripheral surface corresponding pressure cylinder outward flange is offered has identical axial groove; Institute's displacement sensors one end is placed in the axial groove that spacing flange inner peripheral surface has, and the other end is placed in the groove that pressure measuring cylinder outward flange offers.The utility model has the setting range of wider force value transducer range and surveying range and stronger anti-overload ability.
Description
Technical field
The utility model relates to force value sensor, refers in particular to a kind of force value sensor of marine anchor chain tension tester, belongs 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.
For expanding transducer range scope, patent publication No. is that the patent of invention of CN93017843A discloses a kind of double-range formula pressure sensing mechanism, comprise base, the first pressure transducer is provided with above base, sleeve is provided with above the first pressure transducer, in sleeve, be provided with the second pressure transducer, between the lower end of the second pressure transducer and the upper end of the first pressure transducer, be provided with spring, the range of the second pressure transducer is less than the range of the first pressure transducer.By utilizing spring to isolate superposition simply the sensor of two different ranges, though energy enlarged range, can not ensure that its surveying range and range one meet the work requirements of anchor chain puller system surely.In addition, this two are used stackedly to add sensor, if carry out the test of new product anchor chain; when trial value exceeds the measurement range of this " double-range formula pressure sensing mechanism "; not only make the distortion of experimental test value, but also because the protection of first sensor No-mistake Principle, and sensor failure may be caused.
Summary of the invention:
The purpose of this utility model is narrow in order to overcome existing force value transducer range, transships problem under proteciton and defect, simultaneously for meeting the requirement that anchor chain lacerating machine uses, provides a kind of multilayer force value sensor for tension tester.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of multilayer force value sensor for tension tester, comprise 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, the Multi-Layer and Multi-Cavity tower structure body forming in the upper counterbore of another pressure measuring cylinder and have confining pressure chamber is inserted in the lower end of described pressure measuring cylinder; Described induction spring is vertically placed in each confining pressure chamber; The cylindrical that described spacing flange sleeve is contained in described pressure measuring cylinder is fixedly connected with the upper transverse plane being inserted into pressure measuring cylinder, 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 pressure measuring cylinder outward flange offers.
The purpose of this utility model can also be realized further by following technical measures.
Multilayer force value sensor described above is also provided with guide piece, described guide piece refers to and to be matched by the inner side chute of the spacing flange of its axial limiting with being arranged at the boss of upward pressure cylinder arranged outside, and restriction upward pressure cylinder relatively rotates in downforce cylinder.
The upper and lower die cavity of pressure measuring cylinder described above is provided with threaded hole along cylindrical shell axis to be run through, and utilize in threaded central aperture in lower impressions and be connected and fixed one and have a tubular mandrel inserting flexible connection up and down, and the external diameter of last layer mandrel is less than the internal diameter of lower one deck mandrel, orlop pressure measuring cylinder does not arrange mandrel.
Multi-Layer and Multi-Cavity tower structure body described above is three layer of two chamber, and pressure measuring cylinder is circular, and upper impression diameter is greater than lower impressions diameter, and cylindrical shell upper and lower end face is equipped with threaded hole.
The external diameter of upward pressure cylinder described above is greater than the lower impressions diameter of next stressor layer cylinder, and bottom the outward flange that is provided with of pressure measuring cylinder lower end, upper strata, the external diameter of dome and the upper impression counter bore hole diameters of next stressor layer cylinder adapt.
Induction spring described above is disk spring.And the elastic modulus of the disk spring settled in different layers pressure measuring cylinder, successively increase from top to bottom.
Disk spring described above, the ergometry of adjacent two layers spring is provided with the overlay region of 10%.
The detection method of the multilayer force value sensor of a kind of tension tester of the present utility model, comprises the following steps:
1, the elastic modulus E of each layer induction spring is detected, verification displacement conversion coefficient k, the pretightning force of each displacement transducer is greater than induction spring minimal linear pressure, the displayed value of displacement transducer is interval between 5% ~ 95% of the effective travel of sensor spring compressible, displacement transducer minimum pressure displayed value Fmin its effective travel corresponding is 5%, displacement transducer maximum pressure displayed value Fmax its effective travel corresponding is 95%, and upper strata Fmax equals lower floor Fmin;
2, according to job requirement, the range of estimation displacement transducer and surveying range, from top to bottom, ascending, ground floor, the second layer ... be assembled into displacement transducer group, and utilize its upper and lower end face to attach it on pressing machine by flange;
3, the displacement transducer on multilayer force value sensor is connected with computing machine with signal transmitting device by wire, and keeps Measurement channel corresponding with Computer display;
4, measurement parameter is set, check bit displacement sensor, by the parameter value input computing machine that step 1 is determined, verifies the minimum value of each layer displacement transducer, determine that the force value of puller system is according to " Hooke's law ":
F=Fmin+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 the Fmin of ground floor displacement transducer, computing machine does not show, computing machine is reported to the police, and adds a displacement transducer again by step 1 ~ step 4 on displacement transducer group; When puller system works, when pulling force arrives ground floor displacement transducer Fmax, computing machine automatic reading displayed second layer displacement transducer numerical value, reads third layer by that analogy; When puller system works, pulling force exceeds orlop displacement sensor measurement range, computing machine is reported to the police, and adds a displacement transducer again by step 1 ~ step 4 below displacement transducer group;
6, tested, puller system off-load, system reset, powered-down.
The multilayer force value sensor of a kind of tension tester of the utility model, 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; By the design of multilayer pressure cylinder " pagoda " profile integration, between each layer there, by changing the elastic modulus of every layer of spring, from top to bottom, the elastic modulus of spring progressively increases, thus meets the equal precision measurement of different stage anchor chain, also reduces the physical dimension of sensor; In addition, the composite design of multilayer sensor, namely can increase on the upper strata of existing cell pressure cylinder or lower floor or reduce sensor, can increase or reduce it easily and measure range, adjustment surveying range; 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 meets the requirement of puller system to the anti-overload ability of sensor.
In sum, the utility model utilizes many group springs as the pulling force sensing element of puller system sensor, not only there is the very high linearity and multiplicity, and the adjustment of its range and surveying range can easily realize, simultaneously by structural design, this sensor is made to have stronger anti-overload ability.
Advantage and disadvantage of the present utility model, 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 force value sensor construction schematic diagram of the present utility model,
Fig. 2 is the vertical view of Fig. 1,
Fig. 3 is detection method process flow diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
As shown in Figure 1 to Figure 2, a kind of force value sensor for tension tester, by pressure measuring cylinder, induction spring, spacing flange, displacement transducer and guide piece are formed, described pressure measuring cylinder is three layers from top to bottom, i.e. pressure measuring cylinder 12, 22, 32, its structure is identical is rounded cylindrical body, in three stressor layer cylinders, middle part is respectively equipped with dividing plate 12b, 22b, 32b, also be provided with at pressure measuring cylinder lower bottom part and open breach 12d, 22d, the annular flange 12c of 32d, 22c, 32c, annular flange 12c, 22c is embedded in pressure measuring cylinder 22 respectively, in the upper impression of 32, form two closed pressure chamber A, B, disk spring 14,24 is settled respectively in pressure chamber A, B, described spacing flange 21,31 is also provided with breach 21a, 31a, corresponding with breach 12d, 22d on annular flange, is fixed on plane 22a on pressure measuring cylinder, 32a by screw 13,23, the two ends of institute's displacement sensors 16,26 are separately fixed in the breach of 12d-21a and 22d-31a, described guide piece 18,28 is that key 18a, 28a that the outside of upward pressure cylinder 12,22 is fixed matches with keyway 18b, the 28b on spacing flange 21,31, ensures to only have relative movement between pressure measuring cylinder 12,22,32, can not relatively rotate.
In addition, dividing plate 12b, 22b, 32b are provided with tapped through hole along cylindrical shell axis, in the lower impressions of pressure measuring cylinder 12,22, a pipe mandrel 15,25 is fixed wtih respectively by the tapped through hole on dividing plate 12b, 22b, and the external diameter of pipe mandrel 15 is less than the internal diameter of pipe mandrel 25, ensure that pipe mandrel 15 can conveniently be inserted in the pore of pipe mandrel 25, the effect of pipe mandrel 15,25 is for disk spring 14,24 provides Internal hole positioning; In addition the upper and lower end face of pressure measuring cylinder 12,22,32 is equipped with threaded hole, with between facilitating mutually or with the connection of equipment.
The present embodiment both can be vertically mounted on puller system equipment by diagram, as the sensor of vertical puller system, also its center line can be positioned over plane-parallel, utilized the threaded hole on its upper and lower end face to carry out level and was arranged on horizontal puller system and uses.The decrement of the present embodiment levels sensor spring is identical, but the elastic modulus of lower floor's spring is 10 times of the elastic modulus of upper strata spring; Underlying transducer, by the adjustment of spacing flange to pretightning force, has the measured value overlay region of 10% with upper strata sensor, ensures the continuity detected; During puller system work, pressure is passed to the pressure measuring cylinder of sensor, spring in upper sensor pressure measuring cylinder first will be produced displacement by compression, its displacement is processed being delivered in computing machine by the displacement transducer on sensor, according to " the Hooke theorem " of spring, the working pulling force of puller system accurately can be obtained; When working pulling force arrives certain particular value of the value overlay region of upper lower sensor; computing machine is by judging; the shift value of automatic reading lower sensor; now continue intensified pressure value; the bottom of the pressure measuring cylinder 12 on upper sensor will be pressed on the dividing plate 22b of pressure measuring cylinder 22, thus protects measuring sensor and the flexible member of upper sensor.
In addition, as shown in Figure 1, Figure 3, the measuring method of the present embodiment comprises the following steps:
1), the elastic modulus E 1 of ground floor pressure transducer spring 14 and the elastic modulus E 2 of second layer pressure transducer spring 25 is detected, the shift transformation coefficient k 1 of verification ground floor displacement transducer 16 and the shift transformation coefficient k 2 of second layer displacement transducer 26; The present embodiment sensor initial tension of spring (being greater than spring minimal linear pressure): ground floor is about 108kN, and the second layer is about 1080kN; Sensor spring minimum pressure displayed value: ground floor is 120kN, the second layer is 1200kN; Sensor spring maximum pressure displayed value: ground floor is 1200kN, the second layer is 12000kN (namely sensor spring ground floor maximum pressure displayed value equals second layer minimum pressure displayed value); Sensor displayed value is interval: in spring compressible stroke about 5% ~ 95% interval.
2), according to job requirement, the range of sensor group and surveying range are 120kN ~ 12000kN, and little sensor is placed on ground floor, the large second layer that is placed on is assembled into pressure transducer group, and utilizes sensor group two ends end face to attach it on pressing machine by flange;
3), by the displacement transducer 16 on double pressure sensor, be connected with computing machine 1 with signal transmitting device 2 by wire, and keep Measurement channel corresponding with Computer display;
4), measurement parameter is set, check sensor, will step 1) the parameter value input computing machine determined, verify the minimum value of each layer sensor, determine that the force value of puller system is according to " Hooke's law ":
F=Fmin+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, when pulling force arrives ground floor sensor 1200kN, computing machine automatic reading displayed second layer sensor values; When puller system works, pulling force exceeds 12000kN, computing machine is reported to the police, by step 1) ~ step 4) below sensor group, add a large sensor again; .
6), tested, puller system off-load, system reset, powered-down, so that test next time;
The present embodiment 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. the multilayer force value sensor for tension tester, comprise 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 Multi-Layer and Multi-Cavity tower structure body forming in the upper counterbore of another pressure measuring cylinder and have confining pressure chamber is inserted in the lower end of described pressure measuring cylinder; Described induction spring is vertically placed in each confining pressure chamber; The cylindrical that described spacing flange sleeve is contained in described pressure measuring cylinder is fixedly connected with the upper transverse plane being inserted into pressure measuring cylinder, 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 pressure measuring cylinder outward flange offers.
2. the multilayer force value sensor for tension tester according to claim 1, it is characterized in that: described multilayer force value sensor is also provided with guide piece, described guide piece arranges a projection on described pressure measuring cylinder cylindrical, and described spacing flange inner peripheral surface arranges the axial slide matched with projection.
3. the multilayer force value sensor for tension tester according to claim 1, it is characterized in that: between the upper and lower counterbore of described pressure measuring cylinder, also offer threaded central aperture, the tubular mandrel that upper and lower plug-in type is flexibly connected is connected with in threaded central aperture, the external diameter of last layer mandrel is less than the internal diameter of lower one deck mandrel, and orlop pressure measuring cylinder does not arrange mandrel.
4. the multilayer force value sensor for tension tester according to claim 1, it is characterized in that: described Multi-Layer and Multi-Cavity tower structure body is three layer of two chamber, and the external diameter of outward flange that pressure measuring cylinder lower end, upper strata is provided with is less than the upper counter bore hole diameters of next stressor layer cylinder.
5. the multilayer force value sensor for tension tester according to claim 1, is characterized in that: described induction spring is disk spring, and the elastic modulus of the disk spring settled in different layers pressure measuring cylinder, successively increase from top to bottom.
6. the multilayer force value sensor for tension tester according to claim 5, it is characterized in that: described disk spring, the ergometry of adjacent two layers spring is provided with the overlay region of 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420516256.3U CN204389075U (en) | 2014-09-10 | 2014-09-10 | A kind of multilayer force value sensor for tension tester |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420516256.3U CN204389075U (en) | 2014-09-10 | 2014-09-10 | A kind of multilayer force value sensor for tension tester |
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| CN204389075U true CN204389075U (en) | 2015-06-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280158A (en) * | 2014-09-10 | 2015-01-14 | 舟山市质量技术监督检测研究院 | Multi-layer force value sensor for tension tester and measuring method of multi-layer force value sensor |
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2014
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280158A (en) * | 2014-09-10 | 2015-01-14 | 舟山市质量技术监督检测研究院 | Multi-layer force value sensor for tension tester and measuring method of multi-layer force value sensor |
| CN104280158B (en) * | 2014-09-10 | 2016-06-29 | 舟山市质量技术监督检测研究院 | A kind of multilamellar force value sensor for tensile testing machine and measuring method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20160910 |