CN203758659U - Clamping force tester - Google Patents
Clamping force tester Download PDFInfo
- Publication number
- CN203758659U CN203758659U CN201420133983.1U CN201420133983U CN203758659U CN 203758659 U CN203758659 U CN 203758659U CN 201420133983 U CN201420133983 U CN 201420133983U CN 203758659 U CN203758659 U CN 203758659U
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- Prior art keywords
- clamping force
- force tester
- hole
- controller
- module
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- Expired - Lifetime
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- 238000012360 testing method Methods 0.000 claims abstract description 45
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 239000011888 foil Substances 0.000 claims description 6
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 230000003321 amplification Effects 0.000 abstract 3
- 229920001971 elastomer Polymers 0.000 abstract 3
- 239000000806 elastomer Substances 0.000 abstract 3
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 3
- 230000005611 electricity Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 9
- 230000003068 static effect Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 239000007767 bonding agent Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a clamping force tester, comprising a body. The body comprises: a resistance strain type pressure sensor having a strip-shaped elastomer, wherein a left end and a right end of the elastomer are respectively provided with a first through hole and a second through hole, a central section of the elastomer is provided with a wire duct communicated with the first and second through holes, strain gages serving as components of a Wheatstone bridge are arranged in the first and second holes, an upper side and a lower side of the wire duct are symmetrically provided with test surfaces used for testing a clamping force of a contact; a display screen arranged at one end of the resistance strain type pressure sensor; and a processing circuit arranged in the body and having a power supply module serving as a power supply unit, a power amplification module, an analog-to-digital conversion module and a controller, wherein an input end of the power amplification module is connected with the Wheatstone bridge, an output end of the power amplification module is connected with the analog-to-digital conversion module, the analog-to-digital conversion module is connected with the controller, and the display screen is connected with the controller. The clamping force tester of the utility model has the advantages of convenient use, accurate measurement, stable performance, long service life, and low electricity consumption.
Description
Technical field
The utility model relates to a kind of testing tool, particularly, relates in particular to a kind of clamping force tester.
Background technology
High voltage isolator is important device for switching in generating plant and transformer station's electrical system, and its major function is to ensure High-Voltage Electrical Appliances and the safety of device in the time of maintenance, plays the effect of isolation voltage.In examination and repair for high-pressure disconnector process, test fingertip clamping force is a ring of outbalance.Due to problems such as traditional test instrument structure are more, volume is larger, thereby cause measuring in test process inconvenient.
In the patent that Granted publication number is CN101710010B, a kind of device for testing clamping force between moving contact and fixed contact of isolating switch is disclosed, its technical scheme adopting is: a kind of device for testing clamping force between moving contact and fixed contact of isolating switch, it is characterized in that, this device comprises mechanical test part and electric display circuit, described mechanical test part comprises a pedestal extending longitudinally, in described pedestal, be provided with elastic force pre-pressing mechanism, the end of elastic force pre-pressing mechanism is provided with connecting link, on connecting link, be fixed with test moving contact, on test moving contact, elastic floating is provided with the conductor movable contact spring towards pedestal direction, face with described conductor movable contact spring the undersaturation static contact that is provided with conduction, saturated static contact and supersaturation static contact, above-mentioned three static contacts are all fixed on pedestal, and press the distance of setting successively away from described conductor movable contact spring, described conductor movable contact spring is connected with positive source, above-mentioned undersaturation static contact, saturated static contact and supersaturation static contact are controlled respectively and are switched undersaturation pilot lamp by electric display circuit, saturated pilot lamp and clamping force tension pilot lamp carry out correspondence and show.This technical scheme exists structure comparatively complicated equally, measures problem not easily.
Utility model content
The problems referred to above that exist in order to solve prior art, the utility model provide a kind of easy to use, measure accurately, the clamping force tester of stable performance.
To achieve these goals, the utility model adopts following technical scheme: a kind of clamping force tester, comprise body, described body comprises: resistance strain type pressure sensor, it has the elastic body that is strip, two ends, described elastic body left and right arrange respectively first, second through hole, described elastic body middle part arranges the wire casing that is communicated with first, second through hole, in described first, second through hole, arrange the foil gauge as Wheatstone bridge element, the upper and lower symmetria bilateralis of described wire casing is arranged the test surfaces for testing clamping force; Display screen, it is arranged at described resistance strain type pressure sensor one end; Treatment circuit, it is arranged in described body, described treatment circuit has as the power module of power supply unit, power amplifier module, analog-to-digital conversion module and controller, described power amplifier module input end is connected with Wheatstone bridge, output terminal is connected with analog-to-digital conversion module, analog-to-digital conversion module is connected with controller, and described display screen is connected with controller.
Further: described body left end and/or right-hand member arrange the handle with annular knurl.
Further: described controller is single-chip microcomputer.
Further: in display screen one side, control knob to be set.
Further: described power module is dry cell or rechargeable battery.
Further: the upper and lower sides of described elastic body left end respectively setting coordinate with testing machine or clamping device upper and lower contact, circular-arc oral area for locating, the upper and lower sides of described elastic body right-hand member respectively setting coordinate with testing machine or clamping device upper and lower contact, circular-arc oral area for locating.
Further: described wire casing and arrange ranked third through hole between the test surfaces of upside, described wire casing and arrange ranked fourth through hole between the test surfaces of downside, the 3rd, fourth hole is arranged symmetrically with.
Further: described elastic body adopts alloy steel or stainless steel to make.
Further: described test surfaces is circular-arc.
Principle of work is as follows: the utility model is made up of resistance-strain type pressure sensing and intelligent digital two parts.Sensing strain gauge technique is a kind of Sensitive Apparatus that strain variation on measured piece is converted into a kind of electric signal.It is one of chief component of pressure resistance type strain sensing technology.Metallic resistance strain has again two kinds of thread strain and the strains of metal forming shape.Normally strain diaphragm (as the foil gauge of Wheatstone bridge ingredient) is bonded in closely and is produced on mechanics strain matrix (elastic body) by special bonding agent, in the time of the stressed generation STRESS VARIATION of matrix, resistance-strain diaphragm also produces deformation together, the resistance of strain is changed, change thereby make to be added in ohmically voltage.The change in resistance that this strain produces when stressed is conventionally less, general this strain all forms strain bridge (Wheatstone bridge), and amplify by follow-up amplifying circuit, then be transferred to subsequent process circuit (A/D converter and controller), finally show by display screen.
Compared to existing technology, the utlity model has following advantage: the utility model is the sensing strain gauge technique that integrates advanced and the portable type measuring utensil of high-precision data acquisition technology, therefore the utility model is easy to use, measure accurately, stable performance, the life-span is long, and power consumption is little.
Brief description of the drawings
Fig. 1 is clamping force tester structural drawing.
Fig. 2 is processing circuit module figure, in this figure, has omitted power module.
In figure, 1-elastic body, 11-the first through hole, 12-the second through hole, 13-test surfaces, the circular-arc oral area of 14-, 15-wire casing, 21-display screen, 22-control knob, 3-handle, 41-Wheatstone bridge, 42-power amplifier module, 43-analog-to-digital conversion module, 44-controller.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Embodiment
It should be noted that, the term of addressing in literary composition only relates to the view of selected example in corresponding figure as upper and lower, left and right etc., should not understand these terms narrowly, in different working positions or due to arrangement of mirror image symmetry etc., these reference relations may change.
As shown in Figure 1, a kind of clamping force tester, comprise body, described body comprises resistance strain type pressure sensor, it has the elastic body 1 that is strip, described elastic body 1 two ends, left and right arrange respectively first, the second through hole 11, 12, first, the second through hole 11, the 12nd, arrange along fore-and-aft direction, described elastic body 1 middle part arranges and is communicated with first, the wire casing 15 of the second through hole, described first, the second through hole 11, 12 interior layouts are as the foil gauge of Wheatstone bridge element, described wire casing Shang Xia 15 symmetria bilateralis arrange for testing and touch the test surfaces 13 of sub-clamping force, described test surfaces 13 is, and circular-arc (test surfaces is actual is exactly the contact of disconnector, so the size shape of test surfaces is all identical with contact, described clamping force is exactly several power when fingertip is clamped to contact).
Simultaneously, the upper and lower sides of described elastic body 1 left end respectively setting coordinate with testing machine or clamping device upper and lower contact, circular-arc oral area 14 for locating, the upper and lower sides of described elastic body right-hand member respectively setting coordinate with testing machine or clamping device upper and lower contact, circular-arc oral area 14 for locating.
At the right-hand member of described resistance strain type pressure sensor, display screen 21 is set, below described display screen 21, control knob 22 is set.
See Fig. 2, set handling circuit in described body, described treatment circuit has as the power module of power supply unit, power amplifier module 42, analog-to-digital conversion module 43 and controller 44, described power amplifier module 42 input ends are connected with Wheatstone bridge 41, output terminal is connected with analog-to-digital conversion module 43, analog-to-digital conversion module 43 is connected with controller 44, and described display screen 21 is connected with controller 44.
Wherein, power module can be dry cell or rechargeable battery, and power module, to the each module for power supply in treatment circuit, adopts chargeable module in the present embodiment, and controller 44 can adopt single-chip microcomputer.
Described body right-hand member arranges the handle 3 with annular knurl, at the right-hand member of handle 3, charging jack is set.
The major function of this tester: 1, follow the tracks of instruction: in afterburner process, follow the tracks of and show the afterburning value of institute.2, peak value keeps: in afterburner process, displayed value changes along with stepping up the increase of power value, and no matter how reinforcing changes, and peak value keeps showing all the time the maximal force in afterburner process.3, under-voltage instruction: prompting should be changed battery in the time that electric weight is not enough.4, afterburning and be shown in one, be convenient for carrying, be more conducive to closely use.5,, with self-test and self-calibration system, can facilitate verification.6, there is peak value detection of stored function.
The above-mentioned tester function relating to can be passed through existing techniques in realizing, is not described in further detail.
This tester is mainly used to testing high voltage disconnector fingertip clamping force, high voltage isolator fingertip is clamped to the test surfaces of tester in test process.
The principle of work of this tester is as follows: be made up of resistance-strain type pressure sensing and intelligent digital two parts.Sensing strain gauge technique is a kind of Sensitive Apparatus that strain variation on measured piece is converted into a kind of electric signal.It is one of chief component of pressure resistance type strain sensing technology.Metallic resistance strain has again two kinds of thread strain and the strains of metal forming shape.Normally strain diaphragm (as the foil gauge of Wheatstone bridge ingredient) is bonded in closely and is produced on mechanics strain matrix (elastic body) by special bonding agent, in the time of the stressed generation STRESS VARIATION of matrix, resistance-strain diaphragm also produces deformation together, the resistance of strain is changed, change thereby make to be added in ohmically voltage.The change in resistance that this strain produces when stressed is conventionally less, general this strain all forms strain bridge (Wheatstone bridge), and amplify by follow-up amplifying circuit, then be transferred to subsequent process circuit (A/D converter and controller), finally show by display screen.
Draw because this instrument bears, pressure all can, also can be used for measurement and the control of electronic scales and other power value.
It should be noted that, first, described wire casing 15 and also can arrange one ranked third through hole (not shown) between the test surfaces of upside, described wire casing and arrange ranked fourth through hole (not shown) between the test surfaces of downside, the 3rd, fourth hole is arranged symmetrically with.This purpose of design is to promote the deformation effect of elastic body for clamping force, and then improves the foil gauge sensitivity in Wheatstone bridge, the 3rd, fourth hole arranges along fore-and-aft direction.Secondly, the handle in above-described embodiment except arranging at body right-hand member, also can only be arranged at body left end, or arrange at body left end and right-hand member simultaneously.For controller, except adopting the single-chip microcomputer that cost performance is higher, also can adopt other forms of controller, for example processor.Finally, for test surfaces, can also be according to the feature of different apparatus for fastening, corresponding test surfaces is set, this test surfaces can be regular geometric configuration, or random geometry, as long as can facilitate apparatus for fastening to clamp test surfaces in test process.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (9)
1. a clamping force tester, comprises body, it is characterized in that, described body comprises:
Resistance strain type pressure sensor, it has the elastic body (1) that is strip, described elastic body (1) two ends, left and right arrange respectively first, second through hole (11,12), described elastic body (1) middle part arranges the wire casing (15) that is communicated with first, second through hole (11,12), in described first, second through hole (11,12), arrange the foil gauge as Wheatstone bridge element, the upper and lower symmetria bilateralis of described wire casing (15) is arranged the test surfaces (13) for testing clamping force;
Display screen (21), it is arranged at described resistance strain type pressure sensor one end;
Treatment circuit, it is arranged in described body, described treatment circuit has as the power module of power supply unit, power amplifier module (42), analog-to-digital conversion module (43) and controller (44), described power amplifier module (42) input end is connected with Wheatstone bridge (41), output terminal is connected with analog-to-digital conversion module (43), analog-to-digital conversion module (43) is connected with controller (44), and described display screen (21) is connected with controller (44).
2. clamping force tester according to claim 1, is characterized in that: described body left end and/or right-hand member arrange the handle (3) with annular knurl.
3. clamping force tester according to claim 1, is characterized in that: described controller (44) is single-chip microcomputer.
4. clamping force tester according to claim 1, is characterized in that: in display screen (21) one sides, control knob (22) is set.
5. clamping force tester according to claim 1, is characterized in that: described power module is dry cell or rechargeable battery.
6. clamping force tester according to claim 1, it is characterized in that: the upper and lower sides of described elastic body left end respectively setting coordinate with testing machine or clamping device upper and lower contact, circular-arc oral area (14) for locating, the upper and lower sides of described elastic body right-hand member respectively setting coordinate with testing machine or clamping device upper and lower contact, circular-arc oral area (14) for locating.
7. clamping force tester according to claim 1, it is characterized in that: described wire casing (15) and be positioned at and arrange between the test surfaces (13) of upside and ranked third through hole, described wire casing (15) and be positioned at and arrange one between the test surfaces (13) of downside and ranked fourth through hole, the 3rd, fourth hole is arranged symmetrically with.
8. clamping force tester according to claim 1, is characterized in that: described elastic body (1) adopts alloy steel or stainless steel to make.
9. clamping force tester according to claim 1, is characterized in that: described test surfaces (13) is circular-arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420133983.1U CN203758659U (en) | 2014-03-24 | 2014-03-24 | Clamping force tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420133983.1U CN203758659U (en) | 2014-03-24 | 2014-03-24 | Clamping force tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203758659U true CN203758659U (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420133983.1U Expired - Lifetime CN203758659U (en) | 2014-03-24 | 2014-03-24 | Clamping force tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203758659U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105664422A (en) * | 2016-04-01 | 2016-06-15 | 江苏海事职业技术学院 | Elastic force training band with training pulling energy statistical device |
| CN106353022A (en) * | 2016-09-12 | 2017-01-25 | 郑州宇通客车股份有限公司 | Passenger car door clamping force measurement system |
| CN108731863A (en) * | 2017-04-14 | 2018-11-02 | 上海电气集团股份有限公司 | A kind of generator iron-core pole sheet pressure detecting element and its detecting system |
| CN110118620A (en) * | 2019-05-22 | 2019-08-13 | 易众智慧科技(天津)有限公司 | A kind of intelligent steel support shaft pressure sensor and system |
| CN110118619A (en) * | 2019-05-22 | 2019-08-13 | 易众智慧科技(天津)有限公司 | A kind of small axis pressure sensor of intelligence and system |
| CN110567618A (en) * | 2019-07-29 | 2019-12-13 | 深圳供电局有限公司 | Contact engagement force detection device and platform |
-
2014
- 2014-03-24 CN CN201420133983.1U patent/CN203758659U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105664422A (en) * | 2016-04-01 | 2016-06-15 | 江苏海事职业技术学院 | Elastic force training band with training pulling energy statistical device |
| CN105664422B (en) * | 2016-04-01 | 2017-10-20 | 江苏海事职业技术学院 | A kind of elastic force training band with training drawing energy statisticses device |
| CN106353022A (en) * | 2016-09-12 | 2017-01-25 | 郑州宇通客车股份有限公司 | Passenger car door clamping force measurement system |
| CN108731863A (en) * | 2017-04-14 | 2018-11-02 | 上海电气集团股份有限公司 | A kind of generator iron-core pole sheet pressure detecting element and its detecting system |
| CN110118620A (en) * | 2019-05-22 | 2019-08-13 | 易众智慧科技(天津)有限公司 | A kind of intelligent steel support shaft pressure sensor and system |
| CN110118619A (en) * | 2019-05-22 | 2019-08-13 | 易众智慧科技(天津)有限公司 | A kind of small axis pressure sensor of intelligence and system |
| CN110567618A (en) * | 2019-07-29 | 2019-12-13 | 深圳供电局有限公司 | Contact engagement force detection device and platform |
| CN110567618B (en) * | 2019-07-29 | 2021-08-24 | 深圳供电局有限公司 | Contact engagement force detection device and platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140806 |