CN203432846U - Stretching device for steel fiber tensile strength test - Google Patents

Stretching device for steel fiber tensile strength test Download PDF

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Publication number
CN203432846U
CN203432846U CN201320568804.2U CN201320568804U CN203432846U CN 203432846 U CN203432846 U CN 203432846U CN 201320568804 U CN201320568804 U CN 201320568804U CN 203432846 U CN203432846 U CN 203432846U
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CN
China
Prior art keywords
lower pull
stretching device
steel fibre
plate
pull head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320568804.2U
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Chinese (zh)
Inventor
金游
郭松
刘坤
邵红勇
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Gezhouba Group Testing and Inspection Co Ltd
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Gezhouba Group Testing and Inspection Co Ltd
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Priority to CN201320568804.2U priority Critical patent/CN203432846U/en
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Publication of CN203432846U publication Critical patent/CN203432846U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a stretching device for a steel fiber tensile strength test. The stretching device comprises a lower pull plate, an upper pull plate symmetric to the lower pull plate, and upper and lower pull heads for fixing steel fibers, wherein the side surfaces of the lower pull plate and the upper pull plate are connected through positioning plates; one end of each positioning plate is fixedly connected with the lower pull plate, and a guide groove is formed in the other end of each positioning plate; guide columns are movably connected with the upper pull plate through the guide grooves; grooves for clamping the upper and lower pull heads respectively are formed in the upper and lower pull plates. According to the stretching device, the steel fibers are bonded onto the upper and lower pull heads by high-strength resin or a high-strength adhesive, so that the phenomenon of invalid test results caused by high possibility of slipping and even release of the steel fibers in a stretching test process is avoided; the steel fibers are prevented from being broken in a clamping region after being stressed due to stress concentration generated after the steel fibers are clamped by a rigid clamp; the upper and lower pull heads are mounted on the upper and lower pull plates, and a moving direction is limited through the positioning plates, so that deviating stretching is prevented, a test effect is ensured, and the working efficiency is improved.

Description

A kind of steel fibre test for tensile strength stretching device
Technical field
The utility model relates to a kind of test unit, is specifically related to a kind of steel fibre test for tensile strength stretching device.
Background technology
When steel fibre test for tensile strength is measured, steel fibre clamps more difficult on testing machine chuck, is prone to skidding and even tries to shirk responsibility in process of the test, causes test findings to be cancelled; Existing fixture mostly is rigidity fixture, is clamping steel fibre and is applying after pulling force, produces stress and concentrates, and the fracture location of steel fibre after stressed is generally all in clamp area, and if there is the situation that is less than tensile strength design load, test need re-start; For fibrous termination sample in irregular shape, with existing fixture, step up just more difficult.The clamp device of some testing machine is by testing staff, to apply torsion to tighten fixture, bad if the strength of tightening is grasped, and applies certain moment of torsion can to steel fibre test specimen, affects the accuracy of test findings; The general 50mm of length of steel fibre test specimen, needs the hand-held test specimen of a people, and an other detection person tightens fixture.
Summary of the invention
Technical problem to be solved in the utility model is to provide and a kind ofly can guarantees to clamp steel fibre until while breaking and do not try to shirk responsibility, and test specimen can the stretching clamp of centering in extended state.The utility model can improve the stressed fracture of steel fibre and break afterwards in the probability of non-clamp area, can effectively clamp the irregular steel fibre in termination, improves the accuracy that detects data, increases work efficiency simultaneously.
Technical problem to be solved in the utility model is to provide a kind of steel fibre test for tensile strength stretching device, guarantees that it is when being connected with equipment or track, can closed butt joint, and bottle can be moved stably on track or equipment.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of steel fibre test for tensile strength stretching device, comprise lower pulling plate and symmetrically arranged upper arm-tie, between lower pulling plate and upper arm-tie, by location-plate, from its side, connect, one end of location-plate is fixedly connected with lower pulling plate, the other end is provided with gathering sill, by gathering sill guidepost, realize and being flexibly connected of upper arm-tie, this stretching device is also provided with for fixedly lower pull head and the upper pull head of steel fibre, and lower pulling plate and upper arm-tie are provided with for the groove of the lower pull head of clamping and upper pull head respectively.
Described lower pull head and upper pull head are provided with for the fixing pickup groove at steel fibre two ends, steel fibre is placed in pickup groove, then with high-strength resin or glue by itself and lower pull head and upper pull head bonding, make lower pull head, upper pull head and steel fibre become as a whole.
In described pickup groove, be provided with and be convenient to the line of weakness that steel fibre is put on right position, when bonding steel fibre, can accurately locate by it, guarantee that steel fibre does not produce eccentric tension when tension.
Described guidepost is the bolt that is arranged on arm-tie both sides, and guidepost is positioned at gathering sill, and the diameter of guidepost is less than the width of gathering sill, in order to avoid produce frictional resistance in drawing process.By coordinating of guidepost and gathering sill, make arm-tie be merely able to the axially-movable along gathering sill, prevent that steel fibre draw direction in drawing process is offset.
On described lower pulling plate and upper arm-tie, be equipped with for it fixing pilot hole is installed, can this device be connected with testing machine by register pin.
Described upper pull head is identical with drop-down head shapes size, to symmetrical setting.
The utility model bonds to steel fibre between lower pull head and upper pull head by high-strength resin or glue, then descend pull head and upper pull head to snap fitted to respectively on lower pulling plate and upper arm-tie, going up the position-limiting action of arm-tie by lower pulling plate and location-plate can only move vertically, when making steel fibre at drawing process or breaking, do not try to shirk responsibility, the stress that effectively reduction causes due to clamp is concentrated and is broken in the phenomenon of clamp area; Avoid steel fibre test specimen depart in drawing process; Because steel fibre test specimen is by bonding on upper and lower pull head, avoid the torsion that produces when clamping test specimen, improve and detect data accuracy; The configurable lower pull heads that put of a set of stretching clamp, a detection person can prepare a plurality of samples and test simultaneously, and realizes a people test specimen is installed, and increases work efficiency more.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model location-plate.
Fig. 3 is the three-dimensional structure diagram of upper and lower pull head.
Embodiment
As Figure 1-3, a kind of steel fibre test for tensile strength stretching device, it is characterized in that: comprise lower pulling plate 1 and symmetrically arranged upper arm-tie 2, between lower pulling plate 1 and upper arm-tie 2, by location-plate 3, from its side, connect, one end of location-plate 3 is fixedly connected with lower pulling plate 1, the other end is provided with gathering sill 31, by gathering sill 31 guideposts 32, realize and being flexibly connected of upper arm-tie 2, this stretching device is also provided with for fixedly lower pull head 4 and the upper pull head 5 of steel fibre, and lower pulling plate 1 and upper arm-tie 2 are provided with for the groove 11 of the lower pull head 4 of clamping and upper pull head 5 respectively.
In described pickup groove, be provided with and be convenient to the line of weakness that steel fibre is put on right position.
Described guidepost 32 is for being arranged on the bolt of arm-tie 2 both sides, and guidepost 32 is positioned at gathering sill 31, and the diameter of guidepost is less than the width of gathering sill 31.
On described lower pulling plate 1 and upper arm-tie 2, be equipped with for it fixing pilot hole 12 is installed.
During use, first adopt high-strength resin or high-strength plastic to be fixed in the groove of lower pull head 4 and upper pull head 5 steel fibre test specimen, its one end is fixed to lower pull head 4, the other end is fixed to pull head 5, then lower pull head 4, upper pull head 5 are installed on respectively in the groove 11 of its corresponding arm-tie, complete the installation of whole device, finally this device is connected with testing machine by pilot hole 12, start to carry out tension test.

Claims (5)

1. a steel fibre test for tensile strength stretching device, it is characterized in that: comprise lower pulling plate (1) and symmetrically arranged upper arm-tie (2), between lower pulling plate (1) and upper arm-tie (2), by location-plate (3), from its side, connect, one end of location-plate (3) is fixedly connected with lower pulling plate (1), the other end is provided with gathering sill (31), by gathering sill (31) and guidepost (32), realize and being flexibly connected of upper arm-tie (2), this stretching device is also provided with for fixedly lower pull head (4) and the upper pull head (5) of steel fibre, lower pulling plate (1) and upper arm-tie (2) are provided with for clamping respectively the groove (11) of lower pull head (4) and upper pull head (5).
2. steel fibre test for tensile strength stretching device according to claim 1, is characterized in that: described lower pull head (4) and upper pull head (5) are provided with for the fixing pickup groove at steel fibre two ends.
3. steel fibre test for tensile strength stretching device according to claim 2, is characterized in that: in described pickup groove, be provided with and be convenient to the line of weakness that steel fibre is put on right position.
4. steel fibre test for tensile strength stretching device according to claim 1, it is characterized in that: described guidepost (32) is for being arranged on the bolt of arm-tie (2) both sides, guidepost (32) is positioned at gathering sill (31), and the diameter of guidepost is less than the width of gathering sill (31).
5. steel fibre test for tensile strength stretching device according to claim 1, is characterized in that: on described lower pulling plate (1) and upper arm-tie (2), be equipped with for it fixing pilot hole (12) is installed.
CN201320568804.2U 2013-09-13 2013-09-13 Stretching device for steel fiber tensile strength test Expired - Fee Related CN203432846U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320568804.2U CN203432846U (en) 2013-09-13 2013-09-13 Stretching device for steel fiber tensile strength test

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320568804.2U CN203432846U (en) 2013-09-13 2013-09-13 Stretching device for steel fiber tensile strength test

Publications (1)

Publication Number Publication Date
CN203432846U true CN203432846U (en) 2014-02-12

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CN201320568804.2U Expired - Fee Related CN203432846U (en) 2013-09-13 2013-09-13 Stretching device for steel fiber tensile strength test

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CN (1) CN203432846U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105334110A (en) * 2015-12-08 2016-02-17 南京航空航天大学 Loading device and method for testing tension strength of unidirectional fiber reinforced composite perpendicular to fiber direction
CN106153447A (en) * 2015-04-28 2016-11-23 博尔富(江苏)实业有限公司 Steel wire rope bonding strength detects special fixture
CN107884284A (en) * 2018-01-18 2018-04-06 惠州市远大电梯有限公司 A kind of elevator material shearing resistance detection device
CN109724870A (en) * 2017-10-27 2019-05-07 上海国上机电科技有限公司 A kind of device for the detection of automobile towing pin anti-fatigue test

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106153447A (en) * 2015-04-28 2016-11-23 博尔富(江苏)实业有限公司 Steel wire rope bonding strength detects special fixture
CN105334110A (en) * 2015-12-08 2016-02-17 南京航空航天大学 Loading device and method for testing tension strength of unidirectional fiber reinforced composite perpendicular to fiber direction
CN105334110B (en) * 2015-12-08 2017-12-22 南京航空航天大学 Extension test loading device and its method of testing of the Unidirectional Fiber-reinforced Composite perpendicular to machine direction
CN109724870A (en) * 2017-10-27 2019-05-07 上海国上机电科技有限公司 A kind of device for the detection of automobile towing pin anti-fatigue test
CN107884284A (en) * 2018-01-18 2018-04-06 惠州市远大电梯有限公司 A kind of elevator material shearing resistance detection device

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140212

Termination date: 20200913

CF01 Termination of patent right due to non-payment of annual fee