CN203287255U - Tension testing device - Google Patents

Tension testing device Download PDF

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Publication number
CN203287255U
CN203287255U CN2013203650939U CN201320365093U CN203287255U CN 203287255 U CN203287255 U CN 203287255U CN 2013203650939 U CN2013203650939 U CN 2013203650939U CN 201320365093 U CN201320365093 U CN 201320365093U CN 203287255 U CN203287255 U CN 203287255U
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CN
China
Prior art keywords
stationary fixture
tautness meter
sample
pedestal
tensile force
Prior art date
Application number
CN2013203650939U
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Chinese (zh)
Inventor
龙翔
叶凯
官洞山
张燕刚
宾建军
刘修才
胡善阳
关振洲
Original Assignee
深圳市倍特力电池有限公司
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Publication date
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Priority to CN2013203650939U priority Critical patent/CN203287255U/en
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Publication of CN203287255U publication Critical patent/CN203287255U/en

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Abstract

The utility model discloses a tension testing device which comprises a substate, a tension meter fixed on the substrate, a first fixing fixture which is arranged on the substrate and can slide relative to the tension meter, and a drive mechanism driving the first fixing fixture to slide, close to or far away from the tension meter, on the substrate. The first fixing fixture is located on one side of the measuring end of the tension meter. The sliding direction of the first fixing fixture is parallel to the stretching and contracting direction of the measuring end of the tension meter. According to the tension testing device, the fixing fixture clamps a sample, is matched with the tension meter, and slides to stretch the sample so as to test the extension strength of the sample. Consequently, compared with an existing manual stretching mode, the tension testing device greatly reduces deviation and improves the accuracy of testing data.

Description

Device for testing tensile force
Technical field
The utility model relates to a kind of proving installation, relates in particular to a kind of device for testing tensile force.
Background technology
Arrival along with the information age, IT industry is flourish, is marching toward electronics, information, communication " 3C " after the epoch, and electronic product is towards the trend development of " short, little, light, thin ", as the indispensable battery of electronic product, its importance is also more and more significant.Ni-MH battery belongs to one of the 21st century world's ten large hi-techs, will find broad application in fields such as mobile communication, electric tool, electronic toy and electric motor cars, and be the sunrise industry that is in stable development.
Existing test to Ni-MH battery tensile strength in early stage is all to adopt the pattern of manually drawing, and has very large deviation, affects test accuracy.
The utility model content
The technical problems to be solved in the utility model is,, for the above-mentioned defect of prior art, provides a kind of device for testing tensile force that reduces deviation, improves the test data accuracy.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of device for testing tensile force is provided, comprise pedestal, be fixed on the tautness meter on described pedestal, relatively described tautness meter slidably be arranged on the first stationary fixture on described pedestal and drive described the first stationary fixture on described pedestal near or the driving mechanism that slides away from described tautness meter direction; Described the first stationary fixture is positioned at measuring junction one side of described tautness meter, and the glide direction of described the first stationary fixture is parallel with the flexible direction of the measuring junction of described tautness meter.
In device for testing tensile force described in the utility model, described pedestal is provided with at least one guide rail, and described guide rail is parallel with the flexible direction of the measuring junction of described tautness meter; Described the first stationary fixture slidably is engaged on described guide rail.
In device for testing tensile force described in the utility model, described the first stationary fixture comprises having be used to the first slide block of the clip slot of clamping sample and be connected to being used for clamping the first securing member in described clip slot of described sample on described the first slide block, and described clip slot is opening towards the groove of described tautness meter or connects the groove of described the first relative both sides of slide block towards described tautness meter; Described the first stationary fixture slidably is engaged on described guide rail by described the first slide block; Or,
Described the first stationary fixture comprises that relatively folded being used for of establishing clamp two first clamping plate of sample and with two described the first separable connections of clamping plate and regulate the first securing member of distance between two described the first clamping plate, described the first stationary fixture slidably is engaged on described guide rail by described first clamping plate near described pedestal.
In device for testing tensile force described in the utility model, described the first securing member is bolt.
In device for testing tensile force described in the utility model, described driving mechanism comprises by rotation and drives described the first stationary fixture slides on described pedestal screw rod; Described screw rod is positioned at the side of described pedestal away from described tautness meter, and described screw rod passes successively described pedestal and the first stationary fixture and is flexibly connected described the first stationary fixture.
In device for testing tensile force described in the utility model, described driving mechanism also comprises the rotating disk that is fixedly connected with described screw rod and drives described bolt rotary by rotation; Described screw rod passes successively described pedestal and the first stationary fixture and is flexibly connected described the first stationary fixture with an end, and described rotating disk is fixedly connected on the described screw rod other end.
In device for testing tensile force described in the utility model, described device for testing tensile force also comprises the second stationary fixture, described the second stationary fixture slidably is engaged on described guide rail between described tautness meter and the first stationary fixture, and described the second stationary fixture is connected with the measuring junction of described tautness meter.
In device for testing tensile force described in the utility model, described the second stationary fixture is provided with the buckling parts of the measuring junction connection that supplies described tautness meter in the face of a side of described tautness meter; Described buckling parts is convexly equipped with or is arranged with on described the second stationary fixture.
In device for testing tensile force described in the utility model, described the second stationary fixture comprises having be used to the second slide block of the clip slot of clamping sample and be connected to being used for clamping the second securing member in described clip slot of described sample on described the second slide block, and described clip slot is opening towards the groove of described the first stationary fixture or connects the groove of described the second relative both sides of slide block towards described the first stationary fixture; Described the second stationary fixture slidably is engaged on described guide rail by described the second slide block; Or,
Described the second stationary fixture comprises that relatively folded being used for of establishing clamp two second clamping plate of sample and with two described the second separable connections of clamping plate and regulate the second securing member of distance between two described the second clamping plate, described the second stationary fixture slidably is engaged on described guide rail by described second clamping plate near described pedestal.
In device for testing tensile force described in the utility model, described the second securing member is bolt.
Device for testing tensile force of the present utility model, adopt stationary fixture to clamp sample, with tautness meter, coordinates, carry out the tensile strength of specimen by stationary fixture slip stretching sample, in existing pattern of manually drawing, the decrease deviation, improve the accuracy of test data.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in accompanying drawing:
Fig. 1 is the structural representation of the device for testing tensile force of the utility model one embodiment;
Fig. 2 is the structural representation of the device for testing tensile force of another embodiment of the utility model.
Embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
Device for testing tensile force of the present utility model, can be used for the tensile test of Ni-MH battery, is used for especially the tensile strength test of the samples such as barrier film, pole piece and Foamed Nickel of Ni-MH battery.As shown in Figure 1, the device for testing tensile force of the utility model one embodiment, comprise pedestal 10, be fixed on tautness meter 11 on pedestal 10, relatively tautness meter 11 slidably be arranged on the first stationary fixture 12 on pedestal 10 and drive the first stationary fixture 12 on pedestal 10 near or the driving mechanism 13 that slides away from tautness meter 11 directions.The first stationary fixture 12 is positioned at measuring junction 111 1 sides of tautness meter 11, and the glide direction of the first stationary fixture 12 is parallel with the flexible direction of measuring junction 111 of tautness meter 11.During test, sample is fixed between tautness meter 11 and the first stationary fixture 12, by the first stationary fixture 12, slides and pull sample on pedestal 10, can obtain the suffered pulling force data of sample by tautness meter 11.
Wherein, pedestal 10 is provided with at least one guide rail 101, and guide rail 101 is parallel with the flexible direction of measuring junction 111 of tautness meter 11.The first stationary fixture 12 slidably is engaged on guide rail 101, by the relative tautness meter 11 that slides along guide rail 101, slides.This pedestal 10 can comprise a base 102 and be vertically connected at least two back up pads 103 on base 102, and as shown in Figure 1, in the present embodiment, back up pad 103 is provided with two, and these two back up pads, 103 intervals are connected on base 102 relatively.The first stationary fixture 12 can be arranged between two back up pads 103, and therefore, the guide rail 101 that coordinates with the first stationary fixture 12 can be connected between this back up pad 103, and is movable on pedestal 10 along this guide rail 101 for the first stationary fixture 12.In the present embodiment, guide rail 101 is provided with two, is beneficial to the first stationary fixture 12 balances and coordinates thereon.Tautness meter 11 is fixed on base 102 outside two back up pads 103, the measuring junction 111 of tautness meter 11 can pass near the back up pad 103 of this tautness meter 11 and stretch to the first stationary fixture 12.This measuring junction 111 can be drag hook.
The first stationary fixture 12 is used for clamping sample one end, and the other end of sample can be fixed on tautness meter 11, and along guide rail 101 to away from tautness meter 11 directions, sliding and can draw sample, the suffered pulling force of sample shows on tautness meter 11 by the first stationary fixture 12.In the present embodiment, the first stationary fixture 12 comprises the first slide block 121 and the first securing member 122, this first slide block 121 has be used to the clip slot 120 of clamping sample, the first securing member 122 is used for sample is clamping in clip slot 120, and this first stationary fixture 12 slidably is engaged on guide rail 101 by the first slide block 121.Wherein, the first securing member 122 is located in wherein and is through to clip slot 120 from the first slide block 121 tops, during use, with sample one end along for accommodation in clip slot 120, the first securing member 122 is pushed against on the interior sample of clip slot 120, thereby sample is fixed on the first stationary fixture 12.This first securing member 122 can be bolt, is threaded connection on the first slide block 121.Clip slot 120 can be the groove of opening towards tautness meter 11, also can be the groove that connects the first slide block 121 relative both sides towards tautness meter 11.
Driving mechanism 13 is used for driving the first stationary fixture 12 and slides on pedestal 10.This driving mechanism 13 can comprise screw rod 131, and it drives the first stationary fixture 12 by rotation and slides on pedestal 10.This screw rod 131 is positioned at the side of pedestal 10 away from tautness meter 11, and screw rod 131 passes successively pedestal 10 and the first stationary fixture 12 and is flexibly connected the first stationary fixture 12.Preferably, this driving mechanism 13 also comprises the rotating disk 132 that is fixedly connected with screw rod 131 and drives screw rod 131 rotations by rotation.Screw rod 131 1 ends pass successively pedestal 10 and the first stationary fixture 12 and are flexibly connected the first stationary fixture 12, rotating disk 132 is fixedly connected on screw rod 131 other ends, by clockwise or rotate counterclockwise rotating disk 132, drive screw rod 131 and rotate, can drive the first stationary fixture 12 along guide rail 101 near or rotate away from the direction of tautness meter 11.In the present embodiment, screw rod 131 1 ends pass the back up pad 103 away from tautness meter 11 of pedestal 10, and penetrate in the first slide block 121 of the first stationary fixture 12, and 132 of rotating disks are positioned at this back up pad 103 side of the first slide block 121 dorsad.
For sample better is connected with tautness meter 11, this device for testing tensile force also comprises the second stationary fixture 14, is used for the other end of clamping sample, and sample connects in tautness meter 11 by the second stationary fixture 14.This second stationary fixture 14 equally slidably is arranged on pedestal 10.Particularly, this second stationary fixture 14 slidably is engaged on guide rail 101 between tautness meter 11 and the first stationary fixture 12, and the second stationary fixture 14 is connected with the measuring junction 111 of tautness meter 11.Same, this second stationary fixture 14 also can near or slide away from the direction of tautness meter 11.Sample is when test, and an end is clamping by the first stationary fixture 12, and the other end is clamping by the second stationary fixture 14, and by the second stationary fixture, connects tautness meter 11.
For realizing tautness meter 11 and being connected the connection of stationary fixture 14, at the buckling parts 143 that the second stationary fixture 14 connects in the face of the measuring junction 111 that is provided with on a side of tautness meter 11 for tautness meter 11, buckling parts 143 is convexly equipped with or is arranged with on the second stationary fixture 14.This buckling parts 143 can be clasp or catching groove, and the measuring junction 111 that is beneficial to the drag hook shape connects.
This second stationary fixture 14 can be identical or different with the first stationary fixture 12.In the present embodiment, this second stationary fixture 14 comprises having be used to the second slide block 141 of the clip slot 140 of clamping sample and being connected to being used on the second slide block 141 clamping the second securing member 142, the second stationary fixtures 14 in clip slot 140 of sample slidably is engaged on guide rail 101 by the second slide block 141.Clip slot 140 is the groove of opening towards the first stationary fixture 12, or connects the groove of the second slide block 141 relative both sides towards the first stationary fixture 12.The second securing member 142 is located in wherein and is through to clip slot 140 from the second slide block 141 tops, during use, sample one end, along for accommodation in clip slot 140, is pushed against the second securing member 142 on the interior sample of clip slot 140, thereby sample is fixed on the second stationary fixture 14.This second securing member 142 also can be bolt, is threaded connection on the second slide block 141.
When this device for testing tensile force uses, to be placed between first, second stationary fixture 12,14 as samples such as barrier film, pole piece or Foamed Nickels, and the two ends of sample are respectively fixed on first, second stationary fixture 12,14, then rotating rotating disk 132 rotates screw rod 131, driving the first stationary fixture 12 after screw rod 131 rotates slides to the direction away from tautness meter 11, sample is pullled by the first stationary fixture 12 slips, the second stationary fixture 14 that drives the other end slides, and then pull tautness meter 11, show pulling force data by tautness meter 11.Be rotated further screw rod 131 and drive the first stationary fixture 12 slips, until sample disconnects, the shown data of that tautness meter 11 at quarter that sample disconnects are maximum pull data that sample can bear, thereby just can obtain the tensile strength of sample.Should slide and pull sample to carry out the mode of the tensile strength of specimen by stationary fixture, avoid manually drawing the problem that causes measurement error, improve the accuracy of test.And, by with this device for testing tensile force horizontal positioned, with horizontal direction, pull sample to survey its tensile strength, can avoid the impact of gravity on vertical direction, further improve the accuracy of test.
As shown in Figure 2, the device for testing tensile force of another embodiment of the utility model, comprise pedestal 20, be fixed on tautness meter 21 on pedestal 20, relatively tautness meter 21 slidably be arranged on the first stationary fixture 22 on pedestal 20 and drive the first stationary fixture 22 on pedestal 20 near or the driving mechanism 23 that slides away from tautness meter 21 directions.The first stationary fixture 22 is positioned at measuring junction one side of tautness meter 21, and the glide direction of the first stationary fixture 22 is parallel with the flexible direction of measuring junction 211 of tautness meter 21.During test, sample is fixed between tautness meter 21 and the first stationary fixture 22, by the first stationary fixture 22, slides and pull sample on pedestal 20, can obtain the suffered pulling force data of sample by tautness meter 21.
What this embodiment was different from above-described embodiment is: the first stationary fixture 22 comprises that relatively folded being used for of establishing clamp two first clamping plate 221 of sample and with the two first separable connections of clamping plate 221 and regulate the first securing member 222 of distance between two first clamping plate 221.The first stationary fixture 22 slidably is engaged on guide rail 201 by one first clamping plate 221 near pedestal 20.In this embodiment, by the two first clamping samples of clamping plate 221, to make contacting between sample and the first stationary fixture 22 be face and the contacting of face, and avoided the contact of sample spot is easily caused the problem of damage to sample.
When the first stationary fixture 22 uses, sample one end, along for accommodation between two first clamping plate 221, is penetrated and pushes against on the first clamping plate 221 of below on the first clamping plate that are positioned at top by the first securing member 222, sample one end is clamping between two first clamping plate 221.Gap length between two first clamping plate 221 is variation in thickness per sample.This first securing member 222 can be bolt.
This device for testing tensile force also comprises the second stationary fixture 24, slidably is arranged on pedestal 20, is used for the other end of clamping sample, and sample is connected with tautness meter 21 by this second stationary fixture 24.The second stationary fixture 24 can comprise that equally relatively folded being used for of establishing clamp two second clamping plate 241 of sample and with the two second separable connections of clamping plate 241 and regulate the second securing member 242 of distance between two second clamping plate 241.The second stationary fixture 24 slidably is engaged on guide rail 201 by one second clamping plate 241 near pedestal 20.This second securing member 242 can be bolt.This second stationary fixture 24 equally by with sample face and face contact clamping sample, the damage of minimizing to sample.Understandably, this second stationary fixture 24 also can adopt the structure of the second stationary fixture 24 as shown in Figure 1.
Other structure of device for testing tensile force can, with reference to above-described embodiment, not repeat them here.
When this device for testing tensile force uses, to be placed between first, second stationary fixture 22,24 as samples such as barrier film, pole piece or Foamed Nickels, and the two ends of sample are respectively fixed on first, second stationary fixture 22,24, then rotating rotating disk 232 rotates screw rod 231, driving the first stationary fixture 22 after screw rod 231 rotates slides to the direction away from tautness meter 21, sample is pullled by the first stationary fixture 22 slips, the second stationary fixture 24 that drives the other end slides, and then pull tautness meter 21, show pulling force data by tautness meter 21.Be rotated further screw rod 231 and drive the first stationary fixture 22 slips, until sample disconnects, the shown data of that tautness meter 21 at quarter that sample disconnects are maximum pull data that sample can bear, thereby just can obtain the tensile strength of sample.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present utility model.

Claims (10)

1. device for testing tensile force, it is characterized in that, comprise pedestal, be fixed on the tautness meter on described pedestal, relatively described tautness meter slidably be arranged on the first stationary fixture on described pedestal and drive described the first stationary fixture on described pedestal near or the driving mechanism that slides away from described tautness meter direction; Described the first stationary fixture is positioned at measuring junction one side of described tautness meter, and the glide direction of described the first stationary fixture is parallel with the flexible direction of the measuring junction of described tautness meter.
2. device for testing tensile force according to claim 1, is characterized in that, described pedestal is provided with at least one guide rail, and described guide rail is parallel with the flexible direction of the measuring junction of described tautness meter; Described the first stationary fixture slidably is engaged on described guide rail.
3. device for testing tensile force according to claim 2, it is characterized in that, described the first stationary fixture comprises having be used to the first slide block of the clip slot of clamping sample and be connected to being used for clamping the first securing member in described clip slot of described sample on described the first slide block, and described clip slot is opening towards the groove of described tautness meter or connects the groove of described the first relative both sides of slide block towards described tautness meter; Described the first stationary fixture slidably is engaged on described guide rail by described the first slide block; Or,
Described the first stationary fixture comprises that relatively folded being used for of establishing clamp two first clamping plate of sample and with two described the first separable connections of clamping plate and regulate the first securing member of distance between two described the first clamping plate, described the first stationary fixture slidably is engaged on described guide rail by described first clamping plate near described pedestal.
4. device for testing tensile force according to claim 3, is characterized in that, described the first securing member is bolt.
5. device for testing tensile force according to claim 1, is characterized in that, described driving mechanism comprises by rotation and drives described the first stationary fixture slides on described pedestal screw rod; Described screw rod is positioned at the side of described pedestal away from described tautness meter, and described screw rod passes successively described pedestal and the first stationary fixture and is flexibly connected described the first stationary fixture.
6. device for testing tensile force according to claim 5, is characterized in that, described driving mechanism also comprises the rotating disk that is fixedly connected with described screw rod and drives described bolt rotary by rotation; Described screw rod passes successively described pedestal and the first stationary fixture and is flexibly connected described the first stationary fixture with an end, and described rotating disk is fixedly connected on the described screw rod other end.
7. device for testing tensile force according to claim 2, it is characterized in that, described device for testing tensile force also comprises the second stationary fixture, described the second stationary fixture slidably is engaged on described guide rail between described tautness meter and the first stationary fixture, and described the second stationary fixture is connected with the measuring junction of described tautness meter.
8. device for testing tensile force according to claim 7, is characterized in that, described the second stationary fixture is provided with the buckling parts of the measuring junction connection that supplies described tautness meter in the face of a side of described tautness meter; Described buckling parts is convexly equipped with or is arranged with on described the second stationary fixture.
9. device for testing tensile force according to claim 7, it is characterized in that, described the second stationary fixture comprises having be used to the second slide block of the clip slot of clamping sample and be connected to being used for clamping the second securing member in described clip slot of described sample on described the second slide block, and described clip slot is opening towards the groove of described the first stationary fixture or connects the groove of described the second relative both sides of slide block towards described the first stationary fixture; Described the second stationary fixture slidably is engaged on described guide rail by described the second slide block; Or,
Described the second stationary fixture comprises that relatively folded being used for of establishing clamp two second clamping plate of sample and with two described the second separable connections of clamping plate and regulate the second securing member of distance between two described the second clamping plate, described the second stationary fixture slidably is engaged on described guide rail by described second clamping plate near described pedestal.
10. device for testing tensile force according to claim 9, is characterized in that, described the second securing member is bolt.
CN2013203650939U 2013-06-24 2013-06-24 Tension testing device CN203287255U (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103994812A (en) * 2014-06-09 2014-08-20 北京航空航天大学 Inherent frequency comprehensive testing platform capable of applying pretightening force
CN104729990A (en) * 2015-03-10 2015-06-24 东莞华贝电子科技有限公司 Device for testing pull-out force of push-pull battery cover of mobile phone and method for testing handfeel of push-pull battery cover of mobile phone
CN104931351A (en) * 2015-06-24 2015-09-23 歌尔声学股份有限公司 Tensile test device and tensile test method
CN105043872A (en) * 2015-07-14 2015-11-11 河南科技大学 Test board for tensile characteristic of flue-cured tobacco leaf
CN105181438A (en) * 2015-07-21 2015-12-23 安徽江威精密制造有限公司 Pulling force tester used for capacitor
CN105466781A (en) * 2016-01-29 2016-04-06 太仓椿盟链传动有限公司 General chain straightening device
CN105547830A (en) * 2015-12-29 2016-05-04 太仓椿盟链传动有限公司 Tensile force adjusting device for chain detection device
CN105842071A (en) * 2016-01-11 2016-08-10 浙江吉利汽车有限公司 PSW welding test plate automatic detection device
CN105973705A (en) * 2016-05-30 2016-09-28 芜湖富春染织有限公司 Cotton yarn extension testing device
CN106289986A (en) * 2016-09-21 2017-01-04 深圳市力可兴电池有限公司 The method of testing of nickel-hydrogen battery separator antioxygenic property
CN110133461A (en) * 2019-06-19 2019-08-16 国网河北省电力有限公司电力科学研究院 The ageing test apparatus and application method of transformer insulated oilpaper
CN110726610A (en) * 2018-07-17 2020-01-24 宁国市中英橡胶有限公司 Tensile machine clamp

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103994812A (en) * 2014-06-09 2014-08-20 北京航空航天大学 Inherent frequency comprehensive testing platform capable of applying pretightening force
CN104729990A (en) * 2015-03-10 2015-06-24 东莞华贝电子科技有限公司 Device for testing pull-out force of push-pull battery cover of mobile phone and method for testing handfeel of push-pull battery cover of mobile phone
CN104931351A (en) * 2015-06-24 2015-09-23 歌尔声学股份有限公司 Tensile test device and tensile test method
CN104931351B (en) * 2015-06-24 2018-06-12 歌尔股份有限公司 Device for testing tensile force and its test method
CN105043872A (en) * 2015-07-14 2015-11-11 河南科技大学 Test board for tensile characteristic of flue-cured tobacco leaf
CN105181438A (en) * 2015-07-21 2015-12-23 安徽江威精密制造有限公司 Pulling force tester used for capacitor
CN105547830A (en) * 2015-12-29 2016-05-04 太仓椿盟链传动有限公司 Tensile force adjusting device for chain detection device
CN105842071A (en) * 2016-01-11 2016-08-10 浙江吉利汽车有限公司 PSW welding test plate automatic detection device
CN105466781A (en) * 2016-01-29 2016-04-06 太仓椿盟链传动有限公司 General chain straightening device
CN105973705A (en) * 2016-05-30 2016-09-28 芜湖富春染织有限公司 Cotton yarn extension testing device
CN106289986A (en) * 2016-09-21 2017-01-04 深圳市力可兴电池有限公司 The method of testing of nickel-hydrogen battery separator antioxygenic property
CN106289986B (en) * 2016-09-21 2019-02-05 深圳市力可兴电池有限公司 The test method of nickel-hydrogen battery separator antioxygenic property
CN110726610A (en) * 2018-07-17 2020-01-24 宁国市中英橡胶有限公司 Tensile machine clamp
CN110133461A (en) * 2019-06-19 2019-08-16 国网河北省电力有限公司电力科学研究院 The ageing test apparatus and application method of transformer insulated oilpaper

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