CN105043601A - Tandem type full-range tension sensing device applicable to large-amplitude variable load - Google Patents
Tandem type full-range tension sensing device applicable to large-amplitude variable load Download PDFInfo
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- CN105043601A CN105043601A CN201510281856.5A CN201510281856A CN105043601A CN 105043601 A CN105043601 A CN 105043601A CN 201510281856 A CN201510281856 A CN 201510281856A CN 105043601 A CN105043601 A CN 105043601A
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- transmission case
- pulling force
- force sensor
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- variable load
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Abstract
The invention discloses a tandem type full-range tension sensing device applicable to a large-amplitude variable load, which is characterized by comprising a guide rail, a transmission case, tension sensors, clamp holders, a connecting hook, a connecting rod and a data acquisition system, wherein the bottom part of the transmission case is provided with rollers, and the transmission case can carry out relative movements with the guide rail through the rollers; the tension sensors are sequentially connected in series through force transfer rods according to the size of the measuring range; each clamp holder is fixed in the transmission case and located between any two adjacent tension sensors; the connecting hook is connected to one end of the tension sensor with the smallest range and is connected with the transmission case, and the connecting rod is connected to one end of the tension sensor with a large range and stretches out from a side wall through hole of the transmission case; and the data acquisition system comprises a computer, a signal transmitter and a multi-channel data acquisition device. The tandem type full-range tension sensing device applicable to the large-amplitude variable load has the advantages of simple structure and high applicability, and is particularly applicable to carrying out full-range high-precision measurement on loads with large variation amplitude.
Description
Technical field
The present invention relates to a kind of tandem gamut pull sensing device being applicable to significantly variable load, belong to dynamo-electric survey engineering field.
Background technology
Pulling force sensor is a kind of conversion output apparatus pulling force signal being changed into electric signal, has the advantages such as structure is simple, easy to use, cheap, good reliability, is widely used in engineering and daily life.
According to the difference of application scenario, pulling force sensor has different range abilities usually, little of a little newton, large to tens of ton.Simultaneously due to the difference of the structure of pulling force sensor, size and material, pulling force sensor is made to have different resolution and minimum measured value.The pulling force sensor of wide range has lower resolution and larger minimum measured value usually, is suitable for and measures large load; And the pulling force sensor of small-range generally has higher resolution and less minimum measured value, thus ensure the accurate measurement to small load.Such as: range is that the resolution of the pulling force sensor of 5N generally can reach 0.05N ~ 0.1N, and minimum measured value is 0.5N ~ 1N, range is that the resolution of the pulling force sensor of 5000N then only can reach 10N ~ 20N, and minimum measured value is for being generally 100N ~ 200N.
Often need to measure significantly variable load in engineering reality, the change amplitude of this kind of load is wider, the such as convergent force of foundry goods in process of setting, its variation range is increased to hundreds of newton gradually from 0N, can only select to have the pulling force sensor of relatively large journey to cover the four corner of load change when carrying out this type of and measuring.The characteristic of the resolution had based on aforesaid pulling force sensor and minimum measured value, larger measuring error will inevitably be produced to the measurement in side crops industry stage, cannot measure especially for the small load of starting stage, this has just had a strong impact on accuracy and the integrality of measurement result simultaneously.Therefore, normally more difficult to the accurate measurement of this kind of significantly variable load, a kind of simple and effective sense measuring device of current urgent need, can ensure that there is larger range ability, there is again less minimum measured value simultaneously, and all can obtain higher measuring accuracy in each stage of load change, this has great importance to the efficiency and precision that improve engineering survey.
Summary of the invention
The present invention proposes a kind of tandem gamut pull sensing device being applicable to significantly variable load, from the large dynamic process of little change, accurately can measure load value to load.
Technical solution of the present invention: a kind of tandem gamut pull sensing device being applicable to significantly variable load, comprising:
Guide rail;
Transmission case, roller is installed in the bottom of transmission case, transmission case by roller can with guide rail generation relative motion;
Multiple pulling force sensor, described pulling force sensor is serially connected in transmission case by transmission rod according to range size successively;
Multiple clamper, each clamper to be fixed in transmission case and to lay respectively between any two adjacent pulling force sensors, and the transmission rod of correspondence can clamp by clamper;
Butt hook, butt hook is installed on one end of minimum range pulling force sensor and is connected with transmission case,
Connecting link, connecting link is connected to wide range pulling force sensor one end and stretches out from transmission case one lateral through aperture, under a stretching force connecting link can with transmission case generation relative motion;
Data acquisition system (DAS), comprises computing machine, signal transmitting device and multi-channel data acquisition device; The output terminal of each pulling force sensor is all connected by the input end of data line with a signal transmitting device, and the output terminal of each signal transmitting device is connected by the input end of data line with multi-channel data acquisition device; The output terminal of multi-channel data acquisition device is connected with computing machine by data line.
In the present invention, can also arrange a clamper in the position of transmission case inside connecting rod, connecting link can clamp by this clamper.
In the present invention, clamper comprises grip slipper and grip bolt, grip slipper is fixed in transmission case, grip slipper is offered the horizontal through hole and threaded hole that connect, each transmission rod passes from the horizontal through hole of correspondence, grip bolt 15 is screwed in threaded hole through transmission case, rotates grip bolt and can compress or unclamp transmission rod.
In the present invention, the wall thickness of transmission case is 8mm, and adopts corrosion resistant plate to be welded.
In the present invention, roller is nylon material.
In the present invention, the quantity of pulling force sensor is 5.
In the present invention, the horizontal through hole diameter of grip slipper is greater than transmission rod diameter 0.5 ~ 1mm; Transmission case lateral through aperture diameter is greater than connecting link diameter 0.5 ~ 1mm, and the length that connecting link stretches out transmission case is 30 ~ 50mm.
The beneficial effect that the present invention reaches:
1. the present invention adopts the sensor of different range to carry out classification series connection, and its range contains the range ability of all pulling force sensors, has larger useful range, strong adaptability.
2. the present invention carries out fractional constraint by regulating grip bolt to sensors in series sequence; choosing in real time and seamless switching pulling force sensor can be realized; not only ensure that the high-precision measuring to small pulling force; and can measure large load again; can also not be destroyed by small-range sensor in protective device simultaneously, thus achieve the gamut high-acruracy survey to variable load.
3. user can configure the range ability of the sum of series sensor at different levels of pulling force sensor according to actual conditions, to meet the measuring accuracy requirement to each stage of live load, has good expandability and compatibility.
4. adopt multi-path data acquiring system and computing machine to control, the real-time of data acquisition is good, and can show the quick switching of multi-channel test signal and the seamless link of data.
5. structure of the present invention is simple, and cost is low, and applicability is strong, is easy to promote the use of.
Accompanying drawing explanation
Accompanying drawing 1 is cut-open view of the present invention;
Accompanying drawing 2 is left views of the present invention;
Accompanying drawing 3 is " grip slipper " of the present invention outside drawings;
Accompanying drawing 4 is " grip slipper " of the present invention cut-open views.
Reference numeral:
1 computing machine; 2 signal transmitting devices; 3 data lines; 4 transmission-case covers; 5 transmission case bodies; 6 butt hooks; 7 rollers; 8 pulling force sensors; 9 attaching nuts; 10 transmission rods; 11 grip slippers; 12 set bolts; 13 guide rails; 14 connecting links; 15 grip bolts; 16 multi-channel data acquisition devices; 17 hold-down nuts; 18 horizontal through hole; 19 perpendicular screwed hole.
Embodiment
Below in conjunction with real-time example and accompanying drawing, technical solution of the present invention is described in further detail, but protection scope of the present invention is not limited to described embodiment.
As illustrated in fig. 1 and 2, a kind of tandem gamut pull sensing device being applicable to significantly variable load, comprises transmission case, grip slipper 11, grip bolt 15, pulling force sensor 8, guide rail 13, butt hook 6, connecting link 14 and data acquisition system (DAS).
Transmission case comprises transmission case body 5 and transmission-case cover 4, all thickness is adopted to be that 8mm corrosion resistant plate is welded, the sidewall of transmission case body 5 offers some through holes passing for data line 3, the two side central authorities of the length direction of transmission case body 5 offer through hole, for passing of butt hook 6 and connecting link 14.
Bottom transmission case body 5, four angles are all provided with roller 7, and the material of roller 7 is nylon, transmission case by roller 7 can on guide rail 13 Free-rolling.
Arrange five pulling force sensors 8 in transmission case, pulling force sensor 8 is connected in series successively according to range size.According to the corresponding different load level of range size, the pulling force sensor as minimum range is then first order pulling force sensor, for measure load less time load value; The pulling force sensor of maximum range is then level V pulling force sensor, and centre by that analogy.Connected by transmission rod 10 between pulling force sensor 8.Pulling force sensor 8 is connected by attaching nut 9 with between stayed mast, also can weld, and adopting screw thread pair to connect can arbitrarily dismantle.The other end of the pulling force sensor of minimum range is also connected by attaching nut 9 with butt hook 6, and butt hook 6 is fixed by the sidewall of two hold-down nuts 17 with transmission case body 5 simultaneously, and the hook portion of butt hook 6 is positioned at outside transmission case, so that be connected with external device (ED).
The other end of the pulling force sensor of maximum range is connected by attaching nut 9 with connecting link 14, connecting link 14 stretches out outside transmission case by the through hole on another sidewall of transmission case, the diameter of this through hole is greater than the diameter 0.5mm of connecting link 14, the extension elongation of connecting link 14 is 30mm, and at its end threading in order to be connected with external device (ED).This connecting link 14 can slide in the through hole on transmission case sidewall.
As can be seen here, one end of the pulling force sensor of butt hook 6, transmission case and minimum range is fixing, and can relative motion between connecting link 14 and transmission case.
In order to cascade protection and variable load measurement function can be realized, in transmission case body 5, be also provided with clamper.Clamper between any two adjacent pulling force sensors 8, and is used as the transmission rod 10 of clamping connection two pulling force sensors.Its concrete structure and mode are: as shown in Figures 3 and 4, binding clasp comprises grip slipper 11 and grip bolt 15, grip slipper 11 is fixed on transmission case inwall by set bolt 12, grip slipper 11 is offered the horizontal through hole 18 and perpendicular screwed hole 19 that connect, the diameter of horizontal through hole 18 is greater than the diameter 0.5mm of transmission rod 10, each stayed mast can pass from the horizontal through hole 18 of correspondence, grip bolt 15 is then installed in perpendicular screwed hole 19 through transmission case, can compress or unclamp stayed mast when rotating grip bolt 15.
In the present invention; the effect of clamper is clamped by transmission rod 10 thus protects pulling force sensor; therefore the concrete structure of clamper is not limited to structure disclosed in this embodiment; other structure can also be adopted; as scroll chuck structure; outer disc and the transmission case of scroll chuck are fixed, and transmission rod 10 is grabbed chuck center through hole from three and passed, and are clamped by transmission rod 10 by the nut tightened on scroll chuck.Therefore every structure that can realize transmission rod 10 and transmission case are fixed all may be used in the present invention, does not repeat herein.
In order to protect the pulling force sensor of maximum range, a clamper is also set in connecting link 14 position be connected with this pulling force sensor.When magnitude of load exceedes the range of this pulling force sensor, the clamper now tightened herein just can protect all pulling force sensors not damaged by load.Therefore, the number of pulling force sensor is unique, and the serial connection number arranging pulling force sensor according to surveyed load can realize the measurement of larger load.Because pulling force sensor is divided into different brackets according to range size, the therefore corresponding clamper for the protection of pulling force sensor is also divided into the first to level V clamper.Along with the increase of load, tighten the first to the 5th clamper successively, thus realize cascade protection and variable load measurement function.
Data acquisition system (DAS) comprises computing machine 1, signal transmitting device 2 and multi-channel data acquisition device 16.5 corresponding 5 circuit-switched data transmission lines of pulling force sensor.The output terminal of each pulling force sensor is all connected by the input end of data line 3 with corresponding signal transmitting device 2, for the voltage signal of pulling force sensor 8 being carried out amplification process.The output terminal of each signal transmitting device 2 is connected with the input end of multi-channel data acquisition device 16 by data line 3, the output terminal of multi-channel data acquisition device 16 is connected with computing machine 1 by data line 3, and multi-channel data acquisition device 16 is for being converted to numerical signal by voltage analog signal and being input in computing machine 1.
When measuring process, friction force can be produced between the horizontal through hole 18 of transmission rod 10 and grip slipper 11, also friction force can be produced between the through hole of connecting link 14 and transmission case sidewall, therefore add lubricating oil at above-mentioned all horizontal through hole 18 and transmission case lateral through aperture place to carry out lubricating to reduce frictional resistance, improve measuring accuracy further.
The course of work of the present invention and principle:
Before starting test need the butt hook 6 of this device to be firmly connected with external load respectively with connecting link 14, unclamp all grip bolts 15 simultaneously, transmission rod 10 all can be slid axially in the horizontal through hole 18 of grip slipper 11.When load is less, because transmission rod 10 is all in the state of being free to slide, pulling force can act on pulling force sensor at different levels, the pulling force signal that pulling force sensor 8 gathers is by entering in computing machine 1 after signal transmitting device 2 and multi-channel data acquisition device 16, because the pulling force sensor of the first order/minimum range being now positioned at end has minimum measured value and the highest measuring accuracy, therefore computing machine 1 selects the signal of first order pulling force sensor collection as current value of thrust automatically, and the signal of other pulling force sensor will be left in the basket.When external pull increases gradually and is about to the useful range exceeding first order pulling force sensor; tighten the grip bolt 15 of its side; the transmission rod 10 between the first order and second level pulling force sensor is made to be fixed in the grip slipper 11 of first order clamper; thus first order pulling force sensor is kept apart; no longer be subject to the effect of external tensile force, protect small-range pulling force sensor not damaged.This computer-chronograph will select the pulling force signal of second level pulling force sensor generation as current value of thrust automatically.The like, along with the increase gradually of external tensile force, by tightening the grip bolt 15 of corresponding pulling force sensor 8 step by step, small-range pulling force sensor is isolated step by step, and automatically select higher leveled pulling force sensor to measure, thus the gamut high-acruracy survey achieved amplitude variable load, also prevent Yin Lali transfinites and the damage causing small-range sensor simultaneously.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (7)
1. be applicable to a tandem gamut pull sensing device for significantly variable load, it is characterized in that: comprising:
Guide rail;
Transmission case, roller is installed in the bottom of transmission case, transmission case by roller can with guide rail generation relative motion;
Multiple pulling force sensor, described pulling force sensor is serially connected in transmission case by transmission rod according to range size successively;
Multiple clamper, each clamper to be fixed in transmission case and to lay respectively between any two adjacent pulling force sensors, and the transmission rod of correspondence can clamp by clamper;
Butt hook, butt hook is connected to one end of minimum range pulling force sensor and is connected with transmission case,
Connecting link, connecting link is connected to wide range pulling force sensor one end and stretches out from transmission case one lateral through aperture, under a stretching force connecting link can with transmission case generation relative motion;
Data acquisition system (DAS), comprises computing machine, signal transmitting device and multi-channel data acquisition device; The output terminal of each pulling force sensor is all connected by the input end of data line with a signal transmitting device, and the output terminal of each signal transmitting device is connected by the input end of data line with multi-channel data acquisition device; The output terminal of multi-channel data acquisition device is connected with computing machine by data line.
2. a kind of tandem gamut pull sensing device being applicable to significantly variable load according to claim 1, is characterized in that: also arrange a clamper in the position of transmission case inside connecting rod, connecting link can clamp by this clamper.
3. a kind of tandem gamut pull sensing device being applicable to significantly variable load according to claim 1 and 2, it is characterized in that: clamper comprises grip slipper and grip bolt, grip slipper is fixed in transmission case, grip slipper is offered the horizontal through hole and threaded hole that connect, each transmission rod passes from the horizontal through hole of correspondence, grip bolt is installed in threaded hole through transmission case, rotates grip bolt and can compress or unclamp transmission rod.
4. a kind of tandem gamut pull sensing device being applicable to significantly variable load according to claim 3, is characterized in that: the wall thickness of transmission case is 8mm, and adopts corrosion resistant plate to be welded.
5. a kind of tandem gamut pull sensing device being applicable to significantly variable load according to claim 4, is characterized in that: roller is nylon material.
6. a kind of tandem gamut pull sensing device being applicable to significantly variable load according to claim 5, is characterized in that: the quantity of pulling force sensor is 5.
7. a kind of tandem gamut pull sensing device being applicable to significantly variable load according to claim 6, is characterized in that: the horizontal through hole diameter of grip slipper is greater than transmission rod diameter 0.5 ~ 1mm; Transmission case lateral through aperture diameter is greater than connecting link diameter 0.5 ~ 1mm, and the length that connecting link stretches out transmission case is 30 ~ 50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510281856.5A CN105043601B (en) | 2015-05-28 | 2015-05-28 | A kind of tandem gamut pull sensing device for being applied to significantly varying load |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510281856.5A CN105043601B (en) | 2015-05-28 | 2015-05-28 | A kind of tandem gamut pull sensing device for being applied to significantly varying load |
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| CN105043601A true CN105043601A (en) | 2015-11-11 |
| CN105043601B CN105043601B (en) | 2017-07-11 |
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| CN201510281856.5A Expired - Fee Related CN105043601B (en) | 2015-05-28 | 2015-05-28 | A kind of tandem gamut pull sensing device for being applied to significantly varying load |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114383963A (en) * | 2021-12-15 | 2022-04-22 | 迈格仪器(苏州)有限公司 | Indentation reading method of micro Vickers hardness tester |
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| CN103743512A (en) * | 2013-10-26 | 2014-04-23 | 内蒙古工业大学 | Pressure sensor with pretightening force |
| CN103994855A (en) * | 2014-05-30 | 2014-08-20 | 江苏出入境检验检疫局机电产品及车辆检测中心 | Hydraulic driving wide-range force sensor calibration device |
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2015
- 2015-05-28 CN CN201510281856.5A patent/CN105043601B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4646088A (en) * | 1982-07-05 | 1987-02-24 | Inoue-Japax Research Incorporated | Magnetic encoder system |
| CN2262238Y (en) * | 1996-07-11 | 1997-09-10 | 鞍山钢铁集团公司 | Variable measuring range force measuring sensor |
| CN101421601A (en) * | 2006-02-17 | 2009-04-29 | 霍尼韦尔国际公司 | Disposable pressure sensor systems and packages therefor |
| CN201731887U (en) * | 2010-09-09 | 2011-02-02 | 中国船舶重工集团公司第七○三研究所 | Cascade unit for sensors |
| CN103743512A (en) * | 2013-10-26 | 2014-04-23 | 内蒙古工业大学 | Pressure sensor with pretightening force |
| CN103994855A (en) * | 2014-05-30 | 2014-08-20 | 江苏出入境检验检疫局机电产品及车辆检测中心 | Hydraulic driving wide-range force sensor calibration device |
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| CN114383963A (en) * | 2021-12-15 | 2022-04-22 | 迈格仪器(苏州)有限公司 | Indentation reading method of micro Vickers hardness tester |
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