CN205157087U - Dynamic tension sensor of suspension type nonequilibrium - Google Patents
Dynamic tension sensor of suspension type nonequilibrium Download PDFInfo
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- CN205157087U CN205157087U CN201520867464.2U CN201520867464U CN205157087U CN 205157087 U CN205157087 U CN 205157087U CN 201520867464 U CN201520867464 U CN 201520867464U CN 205157087 U CN205157087 U CN 205157087U
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- power cylinder
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Abstract
The utility model discloses a dynamic tension sensor of suspension type nonequilibrium through two cantilever structure, adopts foil gage indirect measurement, adopts the design of cylinder simultaneously for when big tension measurement in the twinkling of an eye, can reduce friction, effectively prevent by the ablation phenomen of being heated in lining rope area, adopting non -equilibrium direct -connected structural design in addition, need not during the measurement to fix on the base, it became invalid to guarantee on the one hand that the fag end can not drop to make to measure in the measurement process, the harmful effects of officious announcement power when on the other hand effectively eliminates dynamic measurement, accuracy when guaranteeing dynamic measurement.
Description
Technical field
The utility model relates to field of sensing technologies, particularly relates to the non-equilibrium dynamic tension sensor of a kind of suspension type.
Background technology
Tension pick-up is also tension detector, is for measuring the instrument of web tension value size in tension force control procedure.Foil gauge is a kind of important sensing element, and in dynamic mechanical is measured, have very consequence, wherein strain-ga(u)ge technique is most widely used general up to now, the measuring technique that technology is the most ripe.Foil gauge sensing technology utilizes the resistance strain effect of metal, and by strain gauge adhesion on test specimen, the resistance of metal can change with mechanically deform suffered by it, the change of resistance just reflect foil gauge paste the strain value at position.This method of testing has the advantage of its uniqueness:
1. structure is simple, and size is little;
2. translation circuit is simple;
3. stable and reliable for performance, precision is high, can measure the strain of structure under various complex environment;
4. be easy to realize test process automation and Multipoint synchronous measurement, distance measuring and remote measurement.
Present stage tension pick-up of a great variety.Divide by measuring object, mainly contain yarn tension survey sensor, layer tension survey sensor, this three classes tension pick-up of cable wire class tonometric sensor.Divide by planform, have drum type brake, pillow block formula, cake formula, beam type and various labyrinth.The tension force of rope band tension force and cable wire class has a lot of similarity, the state etc. of such as stressing conditions, deformation.For the measurement of this kind of tension force, contact and contactless mainly can be divided into.
Contact type measurement comprises: concatenation type, roller type, side-compression and class roller type; Contactlessly to comprise: utilize the relation of the natural frequency f of rope and rope tension to measure, utilize other effects of magnetoelectric effect (ME) or elect magnetic field to measure.Current main flow still adopts the method for contact, and wherein the measuring method of concatenation type is maximum.Concrete grammar measurand (rope band) is blocked sensor to seal in wherein, and the stressed rear two ends to sensor of rope band produce pulling force thus sensor creates deformation.Sensors with auxiliary electrode principle is simple, measure directly, precision and the linearity all very good, but its major defect to destroy rope band.Side-compression in contact, roller type and class roller type, its principle is that the tension force of rope band is carried out indirect inspection by foil gauge, piezoelectric or differential capacitor.This few class measuring method is all harmless formula, on the structure of tested rope band itself without any impact, and installs simple, is convenient to change.
Visible tension pick-up has the FMI of the EL20-S458 of U.S. MEAS, French kortis, German Schmidt's tensiometer on the market now.Although for different objects, they have series of products to select, and have high, the warm drift of precision little, respond the advantages such as fast, but still there is following shortcoming in them: first, and this series products is all mainly applicable to static measurement, do not consider rope band impact by friction force under moment hightension effect; Secondly, this kind of wider flat belt-like structure of securing band for measuring object, in order to prevent coming off of rope band, measurement was lost efficacy, the installation and removal of the said goods are not only complicated, and often dismounting just can be come into operation after once all needing to carry out loaded down with trivial details demarcation by professional, this kind of sensor substantially seldom can reuse in actual experiment process, considerably increases cost; In addition, for the EL20-S458 of U.S. MEAS, for wider flat belt-like structure, for the structure of fixing rope band many employings both sides balanced type, suffered by acquiescence rope band is uniform power, but in actual measurement process, the twistings of rope band etc. all may make the uneven of tension force suffered by it, especially in kinetic measurement process, situation is more complicated, and it is uneven that this just causes the rope band power acted on test specimen to be transmitted, thus make this class formation to realize kinetic measurement.
The utility model is for the defect of some tension pick-ups in the market when measuring, a kind of suspension type dynamic tension sensor is proposed, its ultimate principle passes through assembly structure, adopt foil gauge indirect inspection, the measurement of dynamic tension on the flat belts being mainly used in having one fixed width.Its special drum-type structure can effectively prevent rope band ablated, the impact on measuring accuracy when unbalanced structure can avoid rope band tension imbalance in kinetic measurement, and one-piece construction can use flexibly for the rope band of different in width.
Utility model content
Technical problem to be solved in the utility model is for defect involved in background technology, there is provided a kind of suspension type non-equilibrium dynamic tension sensor, pass through assembly structure, adopt foil gauge indirect inspection, adopt the design of cylinder simultaneously, make, when moment, hightension was measured, friction can be reduced, effectively prevent the ablation phenomen of being heated of tested rope band; Adopt the structural design of non-balanced suspention formula in addition, without the need to being fixed on pedestal during measurement, ensure that rope band can not come off to make to measure in measuring process on the one hand to lose efficacy, effectively eliminate the harmful effect of non-uniform force during kinetic measurement on the other hand, ensure accuracy during kinetic measurement.
The utility model is for solving the problems of the technologies described above by the following technical solutions:
The non-equilibrium dynamic tension sensor of a kind of suspension type, comprises the stressed main body of three spindle-type, baffle plate, the first to the 3rd nut, the first to the 3rd cylinder, first to fourth foil gauge, rope band and electric box;
The stressed main body of described three spindle-type comprises stressed base plate and first and leads power cylinder to the 3rd;
Described first to the 3rd cylinder is chamfering cylinder;
Described first leads power cylinder, the 3rd leads the two ends that power cylinder is vertically set on stressed base plate, described second leads the centre that power cylinder is vertically set on stressed base plate, and described first to the 3rd leads between power cylinder with stressed base plate and be respectively equipped with the chamfering corresponding with the described first to the 3rd cylinder;
Described first to the 3rd cylinder correspondence is nested in described first to the 3rd and leads on power cylinder;
Described second leads power cylinder and first leads the stressed base plate that power cylinder, the 3rd leads between power cylinder and all adopts cantilever beam structure;
Described first to fourth foil gauge is the corresponding bearing up-down force surface being arranged on described two cantilever beam structures respectively;
Described first to the 3rd top of leading power cylinder is respectively equipped with the stud corresponding to the described first to the 3rd nut, and described second leads between power cylinder and the stud on its top and be provided with tapered configuration;
Described baffle plate is provided with leads for described first to the 3rd the through hole that power cylindrical tip stud passes through, lead power cylinder and the 3rd for described first to lead the clear size of opening that power cylindrical tip passes through and be greater than stud, leave free gap and guarantee that baffle plate does not stress in tension pick-up range, and to lead for described second the through hole that power cylindrical tip stud passes through be the tapered hole matched with described tapered configuration, for locking baffle plate;
Described first to the 3rd leads power cylindrical tip stud through locked respectively by the described first to the 3rd nut after baffle plate, and described tapered configuration matches with tapered hole;
Described rope band penetrates from described first side of leading power cylinder, and lead power cylinder and second space, second of leading power cylinder through first successively and lead power cylinder and the 3rd and lead space between power cylinder, the side of then leading power cylinder from the 3rd passes;
Described electric box is connected with described first to fourth foil gauge, for gathering the stressed size of described first to fourth foil gauge.
As the further prioritization scheme of a kind of non-equilibrium dynamic tension sensor of suspension type of the utility model, described stressed base plate is also provided with some for preventing described rope band acting force when moment is stressed from departing from the small front apron of leading power cylinder.
As the further prioritization scheme of a kind of non-equilibrium dynamic tension sensor of suspension type of the utility model, described small front apron is two, is separately positioned on the two ends of described stressed base plate.
As the further prioritization scheme of a kind of non-equilibrium dynamic tension sensor of suspension type of the utility model, described electrical box attached bag contains wireless sending module, for the stress data collected is sent to outside.
The utility model adopts above technical scheme compared with prior art, has following technique effect:
1., without the need to fixed installation, rope band any place can be suspended on and measure;
2. adopt cylinder design, under effectively avoiding transient state hightension, the ablation phenomen that rope band causes by large friction force;
3. adopt nonequilibrium structure, foil gauge can only be attached on the side base plate of sensor, go between easily protected, is not easily pullled disconnected in measuring process, and lead-in wire and related device can be concentrated in box and protect, and makes easy for installation;
4. adopt the baffle plate of particular design, with the stressed main body of triple axle with the use of, fix rope band on the one hand, ensure Measurement sensibility; Effectively eliminate the harmful effect of non-uniform force during kinetic measurement on the other hand, ensure accuracy during kinetic measurement;
5. one-piece construction is simple, for convenience detach and install, the structure of unbalanced ensure that each rope band is installed after do not need to carry out associated calibration in addition, can come into operation, recycling can be accomplished, greatly reduce the manpower financial capacity of experiment.
Accompanying drawing explanation
Fig. 1 is the structural representation of the non-equilibrium dynamic tension sensor of the utility model suspension type;
Fig. 2 be the non-equilibrium dynamic tension sensor of the utility model suspension type remove and install schematic diagram;
Fig. 3 is the schematic diagram that in the non-equilibrium dynamic tension sensor of the utility model suspension type, mode walked by rope band;
Fig. 4 is the schematic diagram of the stressed agent structure of the utility model suspension type non-equilibrium dynamic tension sensor three spindle-type;
Fig. 5 is the Stress Map of the non-equilibrium dynamic tension sensor of the utility model suspension type;
Fig. 6 is the schematic diagram of foil gauge patch location in the non-equilibrium dynamic tension sensor of the utility model suspension type;
Fig. 7 is the schematic diagram of electric box in the non-equilibrium dynamic tension sensor of the utility model suspension type;
Fig. 8-a, Fig. 8-b are design drawing and the Stress Map of baffle arrangement in the non-equilibrium dynamic tension sensor of the utility model suspension type respectively.
In figure, the electric box of 1-, the stressed main body of 2-tri-spindle-type, 3-cylinder, 4-baffle plate, 5-leads power cylinder, 6-rope band, 7-small front apron, 8-tapered configuration, 9-semi-girder, 10-foil gauge, 11-tapered hole.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail:
The utility model discloses the non-equilibrium dynamic tension sensor of a kind of suspension type, comprise the stressed main body of three spindle-type, baffle plate, the first to the 3rd nut, the first to the 3rd cylinder, first to fourth foil gauge, rope band and electric box;
The stressed main body of described three spindle-type comprises stressed base plate and first and leads power cylinder to the 3rd;
Described first to the 3rd cylinder is chamfering cylinder;
Described first leads power cylinder, the 3rd leads the two ends that power cylinder is vertically set on stressed base plate, described second leads the centre that power cylinder is vertically set on stressed base plate, and described first to the 3rd leads between power cylinder with stressed base plate and be respectively equipped with the chamfering corresponding with the described first to the 3rd cylinder;
Described first to the 3rd cylinder correspondence is nested in described first to the 3rd and leads on power cylinder;
Described second leads power cylinder and first leads the stressed base plate that power cylinder, the 3rd leads between power cylinder and all adopts cantilever beam structure;
Described first to fourth foil gauge is the corresponding bearing up-down force surface being arranged on described two cantilever beam structures respectively;
Described first to the 3rd top of leading power cylinder is respectively equipped with the stud corresponding to the described first to the 3rd nut, and described second leads between power cylinder and the stud on its top and be provided with tapered configuration;
Described baffle plate is provided with leads for described first to the 3rd the through hole that power cylindrical tip stud passes through, lead power cylinder and the 3rd for described first to lead the clear size of opening that power cylindrical tip passes through and be greater than stud, leave free gap and guarantee that baffle plate does not stress in tension pick-up range, and to lead for described second the through hole that power cylindrical tip stud passes through be the tapered hole matched with described tapered configuration, for locking baffle plate;
Described first to the 3rd leads power cylindrical tip stud through locked respectively by the described first to the 3rd nut after baffle plate, and described tapered configuration matches with tapered hole;
Described rope band penetrates from described first side of leading power cylinder, and lead power cylinder and second space, second of leading power cylinder through first successively and lead power cylinder and the 3rd and lead space between power cylinder, the side of then leading power cylinder from the 3rd passes;
Described electric box is connected with described first to fourth foil gauge, for gathering the stressed size of described first to fourth foil gauge.
Described stressed base plate being also provided with some for preventing described rope band acting force when moment is stressed from departing from the small front apron of leading power cylinder, being preferably two, being separately positioned on the two ends of described stressed base plate.
On the stressed Design of Main Structure of three spindle-type of sensor, mainly take assembly structure.Lead to adopt between power cylinder and stressed base plate for three and be rigidly connected, the tension force of rope band is led power cylinder by three and is passed on double cantilever beam.In the design of overall volume, the axis of first pilot force cylinder will have certain length, and rope band can be navigated within wherein, and the overall size along leading in power cylindrical radial is little, makes sensor small volume and less weight; Secondly for the design of stressed base plate, the change of the responsive tension force of designing requirement of semi-girder, and be easy to paste foil gauge.
As shown in Figure 3, rope band detours between three cylinders the mode of walking of rope band from left to right or from right to left, time exceptionally straight by tension force, tension signal be converted into pressure signal respectively under act on middle cylinder, and upwards act on both sides cylinder.Structure for design adopts FEM-software ANSYS workbench force analysis situation.By simulation analysis, the stressed main body of three spindle-type obtained in the utility model can be optimized, as shown in Figure 4.Small front apron design in Fig. 4 shown in 6 is in the occasion of moment tension force, ensures that rope band is when moment is exceptionally straight, can act on exactly and leads power cylinder and can not produce skew; The taper design at 7 places is and baffle plate mating reaction be used for fixing baffle plate.
Fig. 5 shows that the structure of this stressed main body has good mechanical characteristic, and two semi-girders are to strain sensitive.The patch location of foil gauge can adopt scheme as shown in Figure 6.Foil gauge is attached to upper and lower two surfaces of semi-girder, experiences pulling force and tension force respectively, adopt Hui Sitong full bridge measurement, improve sensitivity.Lead-in wire can be concentrated in the electrical box of stressed main body back part, is not easily pullled in test process, ensures the stability measured.Electrical box as shown in Figure 7, installs the activity ensureing to limit both sides semi-girder, and the related devices such as lead-in wire and signal conditioning circuit all can be concentrated in box to be protected.
In dynamic test, in fact, when rope band moment is exceptionally straight, a larger impact force action can be produced between rope band and sensor, also can produce the ablation that friction force can cause rope band between the two, the utility model adopts a kind of cylinder design to reduce this destructiveness, ensures job stability.Shown in the visible accompanying drawing 2 of cylinder design, both relative slidings, substantially reduce friction force during moment impact.In the structural design of cylinder, in order to prevent stress from concentrating, leading between power cylinder and base plate and devising chamfering, can by force dispersion on the bearing beam of base plate.The size of this chamfering is relevant to transducer range, carries out Mechanics Simulation determine by ANSYSworkbench.This nested designs, while proof strength demand, directly can be located and firm cylinder, avoid the horizontally slip drift of cylinder on cylinder, reduce measuring accuracy.
When being wider flat belt-like structure for measuring object, in order to the structure of fixing rope band many employings both sides balanced type, the baffle plate of both sides all participates in stressed, this structure only has the stress point of both sides base plate is all loaded onto sensor, just can obtain total stressed size, if be only arranged on the base plate of side, then only in the uniform situation of force acting on transducer, just can measure total stressed size, this is static or change tonometry time ratio slowly and be easier to realize.But in actual measurement process, the twisting of rope band etc. all may make the uneven of tension force suffered by it, especially in kinetic measurement process, situation is more complicated.In kinetic measurement process, how to ensure the accuracy of kinetic measurement, become the matter of utmost importance in structural design.What the utility model one-piece construction adopted is non-balance type structure, ensure that the tension force on rope band is all passed to the stressed main body of three spindle-type, strain on semi-girder can be corresponding with total tension force, therefore ensures that this structural strain sheet only needs to be attached to side base plate and just can reach measurement object.
In the structural design of baffle plate, the fixing of baffle plate need be considered and ensure it not by tension force effect.The structural design of baffle plate is as shown in accompanying drawing 8-a, middle hole adopts taper design, and its principle of work is similar to register pin, and this special taper fit limits baffle plate free movement degree, anti-baffle plate, around the rotary motion of axle, avoids the mistake such as installation site, direction.Visible by Fig. 1, Fig. 2, baffle plate fixes by bolt and the screw thread of leading on power cylinder, and by special taper fit, limits baffle plate free movement degree, anti-baffle plate around the rotary motion of axle to reach positioning action.The hole of baffle plate both sides, when designing, by the result of simulation analysis, for leading the scope of activities that power cylinder provides certain, ensureing that baffle plate can't be subject to tension force effect, and can prevent cell overload and play position-limiting action.Simulation analysis can provide the stressed cloud atlas of baffle plate as shown in accompanying drawing 8-b, and the hole at two ends does not also stress, and only has in centre and leads the supporting role of power cylinder to baffle plate.Visible baffle plate is actually and forms an entirety with the stressed main body of three axles, thus accuracy when can ensure kinetic measurement.
The related devices such as signal conditioning circuit are integrated with in electrical box, also can placing battery and wireless sending module, realize wireless telecommunications.
The entirety of sensor is a kind of suspended structure, is applicable to dynamic and static weighing.This sensor coordinates the small front apron of down either side in the stressed main body of three axles by baffle plate, can ensure the fixing of rope band, especially not come off during moment impact.This sensor can be suspended on tested rope band any place, fixes without the need to special mounting, simple and easy to use.
Those skilled in the art of the present technique are understandable that, unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the utility model.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Above-described embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; be understood that; the foregoing is only embodiment of the present utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. the non-equilibrium dynamic tension sensor of suspension type, is characterized in that, comprises the stressed main body of three spindle-type, baffle plate, the first to the 3rd nut, the first to the 3rd cylinder, first to fourth foil gauge, rope band and electric box;
The stressed main body of described three spindle-type comprises stressed base plate and first and leads power cylinder to the 3rd;
Described first to the 3rd cylinder is chamfering cylinder;
Described first leads power cylinder, the 3rd leads the two ends that power cylinder is vertically set on stressed base plate, described second leads the centre that power cylinder is vertically set on stressed base plate, and described first to the 3rd leads between power cylinder with stressed base plate and be respectively equipped with the chamfering corresponding with the described first to the 3rd cylinder;
Described first to the 3rd cylinder correspondence is nested in described first to the 3rd and leads on power cylinder;
Described second leads power cylinder and first leads the stressed base plate that power cylinder, the 3rd leads between power cylinder and all adopts cantilever beam structure;
Described first to fourth foil gauge is the corresponding bearing up-down force surface being arranged on described two cantilever beam structures respectively;
Described first to the 3rd top of leading power cylinder is respectively equipped with the stud corresponding to the described first to the 3rd nut, and described second leads between power cylinder and the stud on its top and be provided with tapered configuration;
Described baffle plate is provided with leads for described first to the 3rd the through hole that power cylindrical tip stud passes through, lead power cylinder and the 3rd for described first to lead the clear size of opening that power cylindrical tip passes through and be greater than stud, leave free gap and guarantee that baffle plate does not stress in tension pick-up range, and to lead for described second the through hole that power cylindrical tip stud passes through be the tapered hole matched with described tapered configuration, for locking baffle plate;
Described first to the 3rd leads power cylindrical tip stud through locked respectively by the described first to the 3rd nut after baffle plate, and described tapered configuration matches with tapered hole;
Described rope band penetrates from described first side of leading power cylinder, and lead power cylinder and second space, second of leading power cylinder through first successively and lead power cylinder and the 3rd and lead space between power cylinder, the side of then leading power cylinder from the 3rd passes;
Described electric box is connected with described first to fourth foil gauge, for gathering the stressed size of described first to fourth foil gauge.
2. the non-equilibrium dynamic tension sensor of suspension type according to claim 1, is characterized in that, described stressed base plate is also provided with some for preventing described rope band acting force when moment is stressed from departing from the small front apron of leading power cylinder.
3. the non-equilibrium dynamic tension sensor of suspension type according to claim 2, is characterized in that, described small front apron is two, is separately positioned on the two ends of described stressed base plate.
4. the non-equilibrium dynamic tension sensor of suspension type according to claim 1, is characterized in that, described electrical box attached bag contains wireless sending module, for the stress data collected is sent to outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520867464.2U CN205157087U (en) | 2015-11-02 | 2015-11-02 | Dynamic tension sensor of suspension type nonequilibrium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520867464.2U CN205157087U (en) | 2015-11-02 | 2015-11-02 | Dynamic tension sensor of suspension type nonequilibrium |
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| Publication Number | Publication Date |
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| CN205157087U true CN205157087U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520867464.2U Withdrawn - After Issue CN205157087U (en) | 2015-11-02 | 2015-11-02 | Dynamic tension sensor of suspension type nonequilibrium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203239A (en) * | 2015-11-02 | 2015-12-30 | 南京航空航天大学 | Suspended unbalanced dynamic tension sensor |
-
2015
- 2015-11-02 CN CN201520867464.2U patent/CN205157087U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203239A (en) * | 2015-11-02 | 2015-12-30 | 南京航空航天大学 | Suspended unbalanced dynamic tension sensor |
| CN105203239B (en) * | 2015-11-02 | 2017-07-11 | 南京航空航天大学 | A kind of non-equilibrium dynamic tension sensor of suspension type |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20160413 Effective date of abandoning: 20170711 |
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| AV01 | Patent right actively abandoned |