CN203643264U - Maximum force elongation measuring device for steel strands - Google Patents
Maximum force elongation measuring device for steel strands Download PDFInfo
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- CN203643264U CN203643264U CN201420022420.5U CN201420022420U CN203643264U CN 203643264 U CN203643264 U CN 203643264U CN 201420022420 U CN201420022420 U CN 201420022420U CN 203643264 U CN203643264 U CN 203643264U
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- fixed arm
- lower edge
- knife
- knife fixed
- steel strand
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Abstract
The utility model discloses a maximum force elongation measuring device for a steel strand. The maximum force elongation measuring device for steel strands comprises a slide guide rod, an upper edge fixing arm, a lower edge fixing arm, an upper edge, a lower edge, a placement measuring plate and a displacement sensor, wherein the upper edge fixing arm is fixedly sleeved at the upper part of the slide guide rod, and the lower edge fixing arm is sleeved at the lower part of the slide guide rod; the upper edge and the lower edge are respectively arranged at the front ends of the upper edge fixing arm and the lower edge fixing arm; steel strand specimens are embedded in the upper edge and the lower edge; one end of the displacement measuring plate is sleeved on the slide guide rod; the displacement sensor is vertically installed between the placement measuring plate and the lower edge fixing arm. The maximum force elongation measuring device for steel strands can effectively track the specimen stress in the whole process and the crack deformation quantity from extending until breaking the critical point, limits specimens when specimens are cracked, protects the measuring device to prevent from damaging the measuring device, is simple in structure, and measures maximum force elongation accurately.
Description
Technical field
The utility model relates to Material Testing Machine field, relates in particular to a kind of steel strand wires Stretching measurement mechanism.
Background technology
As everyone knows, steel strand wires are by the many stranded steel products that form of steel wire, are usually used in bridge, building, water conservancy, energy Geotechnical Engineering etc.
Measure whether steel strand wires are qualified a many index, wherein steel strand wires Stretching is an important mechanical performance index weighing its material behavior.
At present in testing machine field, the method of measuring length growth rate is mainly to use contact extensometer, its measuring principle is: two edges of a knife are installed on extensometer sounding rod, contact by these two edges of a knife the elongation of responding to sample in two edge of a knife spacing with sample, further make flexible member produce strain by deformed rod, change and be finally converted into displacement through multiple signal, thereby measure the deflection of sample in drawing process.
But traditional measurement method also exists many defects, because steel strand wires sample can produce fracture in test after 1 boundary's point, the vibrations and the impact that in the time of fracture, produce can cause the edge of a knife to be subject to grievous injury.The more important thing is, steel strand wires are that steel wire strand is stranded, when fracture, can blow moment, bring a lot of difficulties can to contact method of clamping.Thereby, in the time using contact extensometer to measure material tensile deformation amount, must before Materials Fracture, extensometer be unloaded down, like this since, just cannot measure the whole process of material extending.
In addition, in the time measuring sample Stretching, before sample is disrumpent feelings, take off after extensometer, need to replace extensometer to carry out surveying work with being arranged on testing machine worktable top offset meter.But, what this displacement meter was measured is actually the relative displacement between testing machine worktable, the distortion of the slippage between the relative sliding between the extension that it comprises sample and sample and fixture and fixture and crossbeam and fixture and crossbeam, above factor all can have influence on the accuracy of final data.
To have for a long time a difficult problem to be solved so how accurately to measure steel strand wires Stretching index always.
Utility model content
The utility model discloses a kind of steel strand wires Stretching measurement mechanism, loaded down with trivial details in order to solve in prior art measuring process, the serious and inaccurate problem of measurement data of specimen fails.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of steel strand wires Stretching measurement mechanism, described measurement mechanism is arranged on steel strand wires sample, wherein, comprising:
Sliding guide, upper edge of a knife fixed arm and lower edge of a knife fixed arm, described upper edge of a knife fixed arm fixed cover is located at the top with described sliding guide, and described lower edge of a knife fixed arm is sheathed on the bottom of described sliding guide;
The upper edge of a knife and the lower edge of a knife, the described upper edge of a knife and the described lower edge of a knife are arranged at respectively the front end of described upper edge of a knife fixed arm and the front end of described lower edge of a knife fixed arm, and described steel strand wires sample is embedded in the described upper edge of a knife and the described lower edge of a knife;
Displacement measurement plate, one end of described displacement measurement plate is sheathed on described sliding guide, and between described displacement measurement plate and described upper edge of a knife fixed arm for being rigidly connected;
Displacement transducer, described displacement transducer is vertically arranged between described displacement measurement plate and described lower edge of a knife fixed arm, and described displacement transducer and described sliding guide be arranged in parallel.
Preferably, described displacement transducer comprises probe, and the head of described probe is connected with described displacement measurement plate contact.
Preferably, also comprise seat bar, described seat bar is vertical on described lower edge of a knife fixed arm.
More preferably, lower edge of a knife fixed arm orienting lug, one end of described lower edge of a knife fixed arm orienting lug is sheathed on the upper end of described seat bar, and described lower edge of a knife fixed arm orienting lug is sheathed on described sliding guide outside surface away from one end of described seat bar.
More preferably, also comprise rotation-preventing mechanism, described rotation-preventing mechanism is sheathed on described sliding guide outside surface, and described rotation-preventing mechanism is between described lower edge of a knife fixed arm orienting lug and described lower edge of a knife fixed arm.
Preferably, also comprise displacement transducer orienting lug, one end of described displacement transducer orienting lug is set in the outside surface of described sliding guide, described displacement transducer orienting lug is sheathed on the outside surface of described displacement transducer away from one end of described sliding guide, described displacement transducer orienting lug is between described displacement measurement plate and described lower edge of a knife fixed arm orienting lug.
Preferably, the knife-edge part of described upper edge of a knife fixed arm and described lower edge of a knife fixed arm is equipped with fastener.
More preferably, described fastener is elastic hook.
Preferably, along being provided with a strip gab in described upper edge of a knife fixed arm longitudinal direction, described sliding guide is positioned at described strip gab, the upper end of described sliding guide is arranged in opening, the part that leans out described opening at described sliding guide is provided with stop nut, stretches out described lower edge of a knife fixed arm lower end be provided with a limit bolt at described sliding guide.
Preferably, the described upper edge of a knife is arranged in described the first nylon jacket assembly, and the described lower edge of a knife is arranged in described the second nylon jacket assembly, sheathed the first nylon jacket assembly and the second nylon jacket assembly on described steel strand wires sample.
Compared with prior art, a kind of steel strand wires Stretching measurement mechanism of the present utility model, has adopted scheme as above to have following technique effect:
The first, all-the-way tracking sample is stressed effectively, from extending until break through the deformation displacement amount rupturing critical point;
The second, in the time of sample fracture, sample is limited, measurement mechanism protection is avoided damaging;
The 3rd, the utility model is simple in structure, measures accurately.
Brief description of the drawings
By reading the detailed description of non-limiting example being done with reference to following accompanying drawing, the further feature of utility model, it is more obvious that object and advantage will become.
Fig. 1 is the perspective view of a kind of steel strand wires Stretching measurement mechanism of the present utility model.
Fig. 2 is A place structure for amplifying schematic diagram in Fig. 1.
Fig. 3 is another structure intention of a kind of steel strand wires Stretching measurement mechanism of the present utility model.
In figure, Reference numeral is as follows with the corresponding relation that refers to element:
Edge of a knife fixed arm 4-steel strand wires sample under the upper edge of a knife fixed arm 3-of 1-sliding guide 2-
7-displacement measurement plate 8-displacement transducer 9-rotation-preventing mechanism 10-displacement transducer guiding
The edge of a knife under the upper edge of a knife 52-of 11-first nylon jacket assembly 12-the second nylon jacket assembly 51-
61-first fastener 62-the second fastener 101-stop nut 102-limit bolt
Edge of a knife fixed arm orienting lug 801-probe under 201-opening 301-seat bar 302-
Embodiment
For technological means that utility model is realized, create feature, reach object and effect is easy to understand, lower combination specifically illustrates, and further sets forth the utility model.
As shown in Fig. 1-2, a kind of steel strand wires Stretching measurement mechanism, this measurement mechanism is arranged on steel strand wires sample 4, wherein, comprise: sliding guide 1, upper edge of a knife fixed arm 2 and lower edge of a knife fixed arm 3, upper edge of a knife fixed arm 2 fixed covers are located at the top of sliding guide 1, and lower edge of a knife fixed arm 3 is sheathed on the bottom of sliding guide 1.
Further, upper edge of a knife fixed arm 2 slides along sliding guide 1 axial direction with lower edge of a knife fixed arm 3.
Further, be provided with the edge of a knife 51 at the front end of upper edge of a knife fixed arm 2, be provided with the lower edge of a knife 52 at the front end of the lower edge of a knife 52 fixed arms 3, and, on the upper edge of a knife 51 and the lower edge of a knife 52, be respectively arranged with the first fastener 61, the second fastener 62.
In enforcement, steel strand wires sample 4 is embedded in the edge of a knife 51 and the lower edge of a knife 52, by fixing of the first fastener 61 and the second fastener 62, edge of a knife fixed arm 2 and lower edge of a knife fixed arm 3 is separately fixed on steel strand wires sample 4.
In a specific embodiment of the present utility model, the first fastener 61 and the second fastener 62 are elastic hook, hook steel strand wires sample 4 by hook, it is fastened on respectively in the edge of a knife 51 and the lower edge of a knife 52, locate upper edge of a knife fixed arm 2 and lower edge of a knife fixed arm 3 with this.
In specific embodiment of the utility model, one end of displacement measurement plate 7 is sheathed on sliding guide 1, further, displacement measurement plate 7 can carry out displacement along the axial direction of sliding guide 1, and between displacement measurement plate 7 and upper edge of a knife fixed arm 2 for being rigidly connected.
In specific embodiment of the utility model, also comprise displacement transducer 8, displacement transducer 8 is vertically arranged between displacement measurement plate 7 and lower edge of a knife fixed arm 3; Displacement transducer 8 be arranged in parallel with sliding guide 1, thereby guarantees that displacement transducer 8 is parallel with steel strand wires sample 4.
Further, displacement transducer 8 comprises probe 801, and the head of probe 801 is connected with displacement measurement plate 7 contacts, and probe 801 can stretch at displacement transducer 8.
In enforcement, displacement measurement plate 7 is for confining in sliding guide 1, and displacement measurement plate 7 can, along the axial direction displacement of sliding guide 1, still not be subject to eject in displacement transducer 8 impact of probe 801.
In a specific embodiment of the present embodiment, the utility model also comprises seat bar 301, seat bar 301 is vertical on lower edge of a knife fixed arm 3, one end of lower edge of a knife fixed arm orienting lug 302 is sheathed on the upper end of seat bar 301, and lower edge of a knife fixed arm orienting lug 302 is sheathed on sliding guide 1 outside surface away from one end of seat bar 301.
Further, between seat bar 301 and one end of lower edge of a knife fixed arm orienting lug 302 for being fixedly connected with, between seat bar 301 and sliding guide 1 for being slidably connected; Further, while utilizing seat bar 301 and coordinating of lower edge of a knife fixed arm orienting lug 302 that lower edge of a knife fixed arm 3 is slided on sliding guide 1, play guide effect.
In a specific embodiment of the present embodiment, the utility model also comprises rotation-preventing mechanism 9, rotation-preventing mechanism 9 is sheathed on sliding guide 1 outside surface, and rotation-preventing mechanism 9, between lower edge of a knife fixed arm orienting lug 302 and lower edge of a knife fixed arm 3, utilizes rotation-preventing mechanism 9 to prevent that the lower edge of a knife fixed arm 3 from rotating in sliding guide 1 outside.
In the specific embodiment of the present embodiment, also comprise displacement transducer orienting lug 10, one end of displacement transducer orienting lug 10 is set in the outside surface of sliding guide 1, displacement transducer orienting lug 10 is sheathed on the outside surface of displacement transducer 8 away from one end of sliding guide 1, displacement transducer orienting lug 10 is between displacement measurement plate 7 and lower edge of a knife fixed arm orienting lug 302.
In the specific embodiment of the present embodiment, along being provided with a strip gab 201 in upper edge of a knife fixed arm 2 longitudinal directions, sliding guide 1 is positioned at strip gab 201, and the upper end of sliding guide 1 is arranged in opening 201, and the part that leans out opening 201 at sliding guide 1 is provided with stop nut 101; Sliding guide 1 stretches out lower edge of a knife fixed arm 3 lower ends and is provided with a limit bolt 102.In enforcement, stop nut 101 is for limiting the displacement range of upper edge of a knife fixed arm 2 on sliding guide 1, and limit bolt 102 is for limiting the displacement range of lower edge of a knife fixed arm 3.
In the specific embodiment of the present embodiment, the outside of steel strand wires sample 4 is arranged with two groups of nylon jacket, the first nylon jacket assembly 11 comprises a pair of nylon jacket, it is arranged at respectively top and the below of edge of a knife fixed arm 2, similarly, the second nylon jacket assembly 12 comprises a pair of nylon jacket, it lays respectively at top and the below of lower edge of a knife fixed arm 3, preferably, between every pair of nylon jacket, being respectively equipped with web member connects, preferably, this the first nylon jacket assembly 11 can adopt mechanical connection manner of the prior art to be connected respectively at upper edge of a knife fixed arm 2 and lower edge of a knife fixed arm 3 with the second nylon jacket assembly 12.
In concrete enforcement of the present utility model, first this measurement mechanism is carried out to school tune, displacement measurement plate 7, displacement transducer orienting lug 10, lower edge of a knife fixed arm orienting lug 302, rotation-preventing mechanism 9, upper edge of a knife fixed arm 2, lower edge of a knife fixed arm 3 and stop nut 101 are enclosed within on sliding guide 1 successively.
Then in sliding guide 1 lower end and be positioned at lower edge of a knife fixed arm 3 downsides and pack limit bolt 102 into, lower edge of a knife fixed arm 3 moves down until touch limit bolt 102, is limited the position of lower edge of a knife fixed arm 3 by limit bolt 102.
Complete upper edge of a knife fixed arm 2 and lower edge of a knife fixed arm 3 spacing adjustment by above step, this spacing is steel strand wires sample 4 and measures gauge length (spacing is recorded).Next, regulate the position of displacement measurement plate 7 on sliding guide 1, the probe 801 on displacement transducer 8 is pressed into, and makes the end that is pressed into rear probe 801 withstand displacement measurement plate 7, need to ensure that probe 801 positions are near null position simultaneously.
Meanwhile, in the upper and lower jaw of testing machine, and utilize testing machine to apply pretightning force to steel strand wires sample 4 the two ends clamping of steel strand wires sample 4, make 4 alignments of steel strand wires sample.Then load onto the first nylon jacket 11 and the second nylon jacket 12 at steel strand wires sample 4 two ends and near gauge length measurement point.Then, the clamping force of utilizing the edge of a knife 5 and fastener 6 to form is fixed on measurement mechanism entirety on steel strand wires sample 4, needs to take off the limit bolt 102 being contained on sliding guide 1 after installing.
When test, after steel strand wires sample 4 is subject to axial tension, sample is elongated, because upper edge of a knife fixed arm 2 and the upper edge of a knife 51 and the lower edge of a knife 52 in lower edge of a knife fixed arm 3 are pressed on specimen surface, upper edge of a knife fixed arm 2 can withstand stop nut 101 sliding guide 1 is moved up along with the distortion of sample, plate 7 is measured in simultaneous displacement also can be along with sliding guide 1 moves up, stretch out gradually along with the displacement of displacement measurement plate 7 makes the probe 801 in displacement transducer 8, the displacement of probe 801 is the anamorphic stretching amount of steel strand wires sample 4.Displacement transducer orienting lug 10 is housed on sliding guide 1 and plays guide effect for displacement transducer 8, can contribute to interior probe 801 displacement of displacement transducer 8 time, reduce sliding friction and guarantee displacement stability.
When steel strand wires sample 4 is subject to maximum, force when disrumpent feelings, the first nylon jacket 11 and the second nylon jacket 12 that are contained in sample two ends can prevent the 4 large area expansions of steel strand wires sample, and the protection edge of a knife is avoided damage, and therefore this measurement mechanism energy all-the-way tracking is measured the elongation of sample.And the displacement that when steel strand wires sample 4 is disrumpent feelings, displacement transducer 8 records is the maximum, force elongation of steel strand wires sample 4, the original length before this numerical value stretches divided by examination, can draw Stretching.
In sum; a kind of steel strand wires Stretching of the utility model measurement mechanism; all-the-way tracking sample is stressed effectively; from extending until break through the deformation displacement amount rupturing critical point; in the time of sample fracture, sample is limited; measurement mechanism protection is avoided damaging, and it is simple in structure, measures accurately.
Above the specific embodiment of utility model is described.It will be appreciated that, utility model is not limited to above-mentioned specific implementations, and the equipment of wherein not describing in detail to the greatest extent and structure are construed as to be implemented with the common mode in this area; Those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect the flesh and blood of utility model.
Claims (10)
1. a steel strand wires Stretching measurement mechanism, described measurement mechanism is arranged on steel strand wires sample, it is characterized in that, comprising:
Sliding guide, upper edge of a knife fixed arm and lower edge of a knife fixed arm, described upper edge of a knife fixed arm fixed cover is located at the top with described sliding guide, and described lower edge of a knife fixed arm is sheathed on the bottom of described sliding guide;
The upper edge of a knife and the lower edge of a knife, the described upper edge of a knife and the described lower edge of a knife are arranged at respectively the front end of described upper edge of a knife fixed arm and the front end of described lower edge of a knife fixed arm, and described steel strand wires sample is embedded in the described upper edge of a knife and the described lower edge of a knife;
Displacement measurement plate, one end of described displacement measurement plate is sheathed on described sliding guide, and between described displacement measurement plate and described upper edge of a knife fixed arm for being rigidly connected;
Displacement transducer, described displacement transducer is vertically arranged between described displacement measurement plate and described lower edge of a knife fixed arm, and described displacement transducer and described sliding guide be arranged in parallel.
2. steel strand wires Stretching measurement mechanism according to claim 1, is characterized in that, described displacement transducer comprises probe, and the head of described probe is connected with described displacement measurement plate contact.
3. steel strand wires Stretching measurement mechanism according to claim 1, is characterized in that, also comprises seat bar, and described seat bar is vertical on described lower edge of a knife fixed arm.
4. steel strand wires Stretching measurement mechanism according to claim 3, it is characterized in that, lower edge of a knife fixed arm orienting lug, one end of described lower edge of a knife fixed arm orienting lug is sheathed on the upper end of described seat bar, and described lower edge of a knife fixed arm orienting lug is sheathed on described sliding guide outside surface away from one end of described seat bar.
5. steel strand wires Stretching measurement mechanism according to claim 4, it is characterized in that, also comprise rotation-preventing mechanism, described rotation-preventing mechanism is sheathed on described sliding guide outside surface, and described rotation-preventing mechanism is between described lower edge of a knife fixed arm orienting lug and described lower edge of a knife fixed arm.
6. steel strand wires Stretching measurement mechanism according to claim 1, it is characterized in that, also comprise displacement transducer orienting lug, one end of described displacement transducer orienting lug is set in the outside surface of described sliding guide, described displacement transducer orienting lug is sheathed on the outside surface of described displacement transducer away from one end of described sliding guide, described displacement transducer orienting lug is between described displacement measurement plate and described lower edge of a knife fixed arm orienting lug.
7. steel strand wires Stretching measurement mechanism according to claim 1, is characterized in that, the knife-edge part of described upper edge of a knife fixed arm and described lower edge of a knife fixed arm is equipped with fastener.
8. steel strand wires Stretching measurement mechanism according to claim 7, is characterized in that, described fastener is elastic hook.
9. according to the steel strand wires Stretching measurement mechanism described in claim 1-8 any one, it is characterized in that, along being provided with a strip gab in described upper edge of a knife fixed arm longitudinal direction, described sliding guide is positioned at described strip gab, the upper end of described sliding guide is arranged in opening, the part that leans out described opening at described sliding guide is provided with stop nut, stretches out described lower edge of a knife fixed arm lower end be provided with a limit bolt at described sliding guide.
10. according to the steel strand wires Stretching measurement mechanism described in claim 9, it is characterized in that, also comprise the first nylon external member and the second nylon external member, the described upper edge of a knife is arranged in described the first nylon jacket assembly, the described lower edge of a knife is arranged in described the second nylon jacket assembly, and described the first nylon external member and described the second nylon external member are sheathed on respectively on described steel strand wires sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420022420.5U CN203643264U (en) | 2014-01-14 | 2014-01-14 | Maximum force elongation measuring device for steel strands |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420022420.5U CN203643264U (en) | 2014-01-14 | 2014-01-14 | Maximum force elongation measuring device for steel strands |
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| Publication Number | Publication Date |
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| CN203643264U true CN203643264U (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420022420.5U Expired - Fee Related CN203643264U (en) | 2014-01-14 | 2014-01-14 | Maximum force elongation measuring device for steel strands |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067425A (en) * | 2015-09-11 | 2015-11-18 | 上海电气核电设备有限公司 | Extensometer guide rod system and method for high-temperature tension test by using system |
| CN105277427A (en) * | 2014-07-14 | 2016-01-27 | 宝钢集团南通线材制品有限公司 | Low frequency fatigue detection method of pre-stressed steel strand |
| CN107963556A (en) * | 2017-11-22 | 2018-04-27 | 蓝旭辉 | A kind of boom hoisting cable wire prior-warning device |
| CN108020466A (en) * | 2017-12-21 | 2018-05-11 | 吉林大学 | For the split type miniature extensometer of small-sized original position stretching instrument stretcher strain measurement |
| CN109764845A (en) * | 2019-03-12 | 2019-05-17 | 四川升拓检测技术股份有限公司 | One kind being based on reverse drawing method front end steel strand wires displacement detector |
-
2014
- 2014-01-14 CN CN201420022420.5U patent/CN203643264U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277427A (en) * | 2014-07-14 | 2016-01-27 | 宝钢集团南通线材制品有限公司 | Low frequency fatigue detection method of pre-stressed steel strand |
| CN105067425A (en) * | 2015-09-11 | 2015-11-18 | 上海电气核电设备有限公司 | Extensometer guide rod system and method for high-temperature tension test by using system |
| CN107963556A (en) * | 2017-11-22 | 2018-04-27 | 蓝旭辉 | A kind of boom hoisting cable wire prior-warning device |
| CN108020466A (en) * | 2017-12-21 | 2018-05-11 | 吉林大学 | For the split type miniature extensometer of small-sized original position stretching instrument stretcher strain measurement |
| CN108020466B (en) * | 2017-12-21 | 2024-02-02 | 吉林大学 | Split type miniature extensometer for measuring stretching deformation of small-sized in-situ stretching instrument |
| CN109764845A (en) * | 2019-03-12 | 2019-05-17 | 四川升拓检测技术股份有限公司 | One kind being based on reverse drawing method front end steel strand wires displacement detector |
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Granted publication date: 20140611 Termination date: 20210114 |
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