CN202649049U - Simple device applicable to fiber reinforcement tensile strength test - Google Patents
Simple device applicable to fiber reinforcement tensile strength test Download PDFInfo
- Publication number
- CN202649049U CN202649049U CN 201220335171 CN201220335171U CN202649049U CN 202649049 U CN202649049 U CN 202649049U CN 201220335171 CN201220335171 CN 201220335171 CN 201220335171 U CN201220335171 U CN 201220335171U CN 202649049 U CN202649049 U CN 202649049U
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- Prior art keywords
- fiber bar
- steel sleeve
- block
- tensile strength
- strength test
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- Expired - Fee Related
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Abstract
The utility model discloses a simple device applicable to fiber reinforcement tensile strength test. The device comprises a strain gauge, a strain indicator, a fiber reinforcement, two sideboards, two supporting boards or two supporting blocks, two steel sleeves, a hydraulic jack and gaskets, the strain gauge is arranged in the middle of the fiber reinforcement and connected with the strain indicator, two ends of the fiber reinforcement are fixed into the steel sleeves, threads are arranged outside the steel sleeves, steel sleeve installing holes are symmetrically arranged on the two sideboards, the fiber reinforcement is positioned in a gap between the two supporting boards or the two supporting blocks, two ends of each supporting board or each supporting block are tightly attached on the two sideboards respectively, the steel sleeves arranged at the two ends of the fiber reinforcement respectively penetrate through the steel sleeve installing holes of the two sideboards, the extending end of the steel sleeve at one end is locked on the corresponding sideboard by the aid of a nut and a gasket, the extending end of the steel sleeve at the other end is provided with the jack, the jack is locked by the aid of a gasket and a nut, and a mechanical digital sensor is arranged on an oil hydraulic pump of the jack. The simple device is reasonable in design and simple in structure, materials can be easily obtained, and the test is convenient.
Description
Technical field
The utility model relates to a kind of device of fiber bar performance test, particularly a kind of device that is applicable to easily the fiber bar tensile strength test.
Background technology
At present universal testing machine is mainly still adopted in the test of pulling strengrth, but universal testing machine generally is used for the test of the reinforcing bar of high-modulus etc., test with its pulling strengrth to the fiber bar muscle and to have following defective: 1, because the fiber bar anisotropy, the easy brittle failure of material, be easy to destroy at collet segment, therefore can not use the pliers of universal testing machine upper and lower sides, otherwise fiber bar can be crushed; 2, the stroke of universal testing machine only has 1m, and the fiber bar testing length requirement is 40 times of its diameter, add the sleeve anchorage length at two ends, and because the bullet mould of fiber bar is lower, have larger extension, cause its length will be greater than 1m, thereby so that the test of the pulling strengrth of fiber bar be not suitable for using universal testing machine.
At present, domestic when generally carrying out the tension test of fiber bar, the method for employing is the minor diameter test specimen that test specimen is processed into " dumbbell " shape, then stretch, directly be converted into raw-material mechanical property by test findings, such test does not often meet actual conditions, and error is large.
The utility model content
In order to solve the problems of the technologies described above the simple and easy device that is applicable to the fiber bar tensile strength test that the utility model provides a kind of material to be easy to get, conveniently to test.
To achieve these goals, the technical solution of the utility model is as follows: a kind of simple and easy device that is applicable to the fiber bar tensile strength test, comprise foil gauge (1), strainmeter (2) and fiber bar (8), also comprise two side plates (3), two back up pads or back-up block (4), two steel sleeves (5), fluid pressure type lifting jack (6) and pad (7), foil gauge (1) is equipped with at the middle part of described fiber bar (8), the signal output part of this foil gauge (1) is connected with the signal input part of strainmeter (2), the two ends of described fiber bar (8) are separately fixed in the steel sleeve (5), described steel sleeve (5) is provided with external thread, the upper symmetry of two side plates (3) has the steel sleeve mounting hole, two back up pads or back-up block (4) be arranged in parallel and two back up pads or back-up block (4) between gapped, two back up pads or back-up block (4) are linked to be an integral body by screw rod (4a), the two ends of described back up pad or back-up block (4) are close to respectively on two side plates (3), described fiber bar (8) is positioned at the gap between two back up pads or the back-up block (4), and described fiber bar (8) is positioned on the screw rod (4a), the steel sleeve (5) at described fiber bar (8) two ends passes respectively the steel sleeve mounting hole of two side plates (3), wherein the external part of the steel sleeve of an end (5) is locked on the side plate (3) by nut and pad (7), lifting jack (6) is housed on the external part of the steel sleeve of the other end (5), by pad (7) and nut lifting jack (6) is locked on the side plate (3) again, on the oil pressure pump (6a) of described lifting jack (6) mechanics digital sensing instrument (9) is housed.
Adopt technique scheme, lifting jack outwards applies acting force, drives fiber bar and elongates, foil gauge also elongates thereupon, by reading the numerical value of strainmeter, just can obtain the strain of fiber bar, simultaneously, mechanics digital sensing instrument shows the size of used stress, and stress obtains its modulus divided by strain.This experimental provision goes for the test of various fiber bars, and this test unit is simple in structure, side plate, support plate or back-up block, lifting jack etc. all are the test articles for use that are easy to get, and the back up pad of this device or the length of back-up block can be adjusted, therefore the length that can measure fiber bar also can be adjusted convenient test.Device of the present utility model also can be used for long-term testing experiment simultaneously, can be used for doing the relaxation test of fiber bar.
In technique scheme: be filled with the agent of epoxy resin riveted between the fiber bar (8) in described steel sleeve (5) and the steel sleeve (5).
In technique scheme, for the Measurement accuracy strain, described foil gauge (1) is two, and two foil gauges (1) are arranged on the centre of fiber bar (8).
In technique scheme: the length of the steel sleeve (5) at described fiber bar (8) two ends is more than or equal to 30 centimetres, and the length of the exposed fiber bar (8) in middle part is 40 times of fiber bar (8) self diameter.The length of both sides riveted is long like this, the situation of slippage can not occur, and strain and force measurement are more accurate.
In technique scheme, described back up pad or back-up block (4) are two channel-section steels of opposing setting.Channel-section steel is available material everywhere, embodied material of the present utility model be simple and easy to characteristics.
In technique scheme, described channel-section steel adopts telescopic channel-section steel.Can adjust easily according to the length of fiber bar like this length of test unit.
In technique scheme, described two back up pads or back-up block (4) are linked to be an integral body by three equally distributed screw rods (4a).
Beneficial effect: the utility model is reasonable in design, simple in structure, material is easy to get, convenient test.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the wiring layout of fiber bar of the present utility model and steel sleeve.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
The length of the steel sleeve 5 at described fiber bar 8 two ends is more than or equal to 30 centimetres, that is to say that the riveted length on fiber bar 8 both sides greater than 30 centimetres, can avoid slippage like this, and the exposed length in fiber bar 8 middle parts is 40 times of self diameter.
In order conveniently to draw materials, described back up pad or back-up block 4 are two channel-section steels of opposing setting.And in order to make things convenient for the length of adjustment equipment self, to adapt to different fiber bars, described channel-section steel can adopt telescopic channel-section steel.
During installation, at first all being tightened by bolts at the device two ends to move it, first pre-pretensioning 10KN, each part closely connects, lax again, tight a bolt this moment again, eliminates systematic error, at last by loading lifting jack 6, namely can read the power that is carried on the fiber bar 8, at this moment, because lifting jack 6 stretches out outward, drive fiber bar 8 and elongate, the foil gauge 1 that is connected with strainmeter 2 is also thereupon elongated, by reading the strain on the strainmeter 2, can obtain the strain of fiber bar 8, namely obtain again the modulus of fiber bar divided by strain with stress.
Claims (7)
1. simple and easy device that is applicable to the fiber bar tensile strength test, comprise foil gauge (1), strainmeter (2) and fiber bar (8), it is characterized in that: also comprise two side plates (3), two back up pads or back-up block (4), two steel sleeves (5), fluid pressure type lifting jack (6) and pad (7), foil gauge (1) is equipped with at the middle part of described fiber bar (8), the signal output part of this foil gauge (1) is connected with the signal input part of strainmeter (2), the two ends of described fiber bar (8) are separately fixed in the steel sleeve (5), described steel sleeve (5) is provided with external thread, the upper symmetry of two side plates (3) has the steel sleeve mounting hole, two back up pads or back-up block (4) be arranged in parallel and two back up pads or back-up block (4) between gapped, two back up pads or back-up block (4) are linked to be an integral body by screw rod (4a), the two ends of described back up pad or back-up block (4) are close to respectively on two side plates (3), described fiber bar (8) is positioned at the gap between two back up pads or the back-up block (4), and described fiber bar (8) is positioned on the screw rod (4a), the steel sleeve (5) at described fiber bar (8) two ends passes respectively the steel sleeve mounting hole of two side plates (3), wherein the external part of the steel sleeve of an end (5) is locked on the side plate (3) by nut and pad (7), lifting jack (6) is housed on the external part of the steel sleeve of the other end (5), by pad (7) and nut lifting jack (6) is locked on the side plate (3) again, on the oil pressure pump (6a) of described lifting jack (6) mechanics digital sensing instrument (9) is housed.
2. the described simple and easy device that is applicable to the fiber bar tensile strength test according to claim 1 is characterized in that: be filled with the agent of epoxy resin riveted between the fiber bar (8) in described steel sleeve (5) and the steel sleeve (5).
3. the described simple and easy device that is applicable to the fiber bar tensile strength test according to claim 1, it is characterized in that: described foil gauge (1) is two, two foil gauges (1) are arranged on the centre of fiber bar (8).
4. each described simple and easy device that is applicable to the fiber bar tensile strength test according to claim 1-3, it is characterized in that: the length of the steel sleeve (5) at described fiber bar (8) two ends is more than or equal to 30 centimetres, and the length of the exposed fiber bar (8) in middle part is 40 times of fiber bar (8) self diameter.
5. each described simple and easy device that is applicable to the fiber bar tensile strength test according to claim 1-3, it is characterized in that: described back up pad or back-up block (4) are two channel-section steels of opposing setting.
6. the described simple and easy device that is applicable to the fiber bar tensile strength test according to claim 5, it is characterized in that: described channel-section steel adopts telescopic channel-section steel.
7. each described simple and easy device that is applicable to the fiber bar tensile strength test according to claim 1-3, it is characterized in that: described two back up pads or back-up block (4) are linked to be an integral body by three equally distributed screw rods (4a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220335171 CN202649049U (en) | 2012-07-11 | 2012-07-11 | Simple device applicable to fiber reinforcement tensile strength test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220335171 CN202649049U (en) | 2012-07-11 | 2012-07-11 | Simple device applicable to fiber reinforcement tensile strength test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202649049U true CN202649049U (en) | 2013-01-02 |
Family
ID=47418141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220335171 Expired - Fee Related CN202649049U (en) | 2012-07-11 | 2012-07-11 | Simple device applicable to fiber reinforcement tensile strength test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202649049U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251797A (en) * | 2014-09-30 | 2014-12-31 | 任红 | Tensile test fixture for ribbed glass material |
| CN109470568A (en) * | 2018-09-18 | 2019-03-15 | 中国石油天然气集团有限公司 | A kind of easy device for testing tubing string Sensitivity of Stress Corrosion in kind |
| CN110320107A (en) * | 2019-08-05 | 2019-10-11 | 洛阳恒诺锚固技术有限公司 | Horizontal tensile testing machine |
-
2012
- 2012-07-11 CN CN 201220335171 patent/CN202649049U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251797A (en) * | 2014-09-30 | 2014-12-31 | 任红 | Tensile test fixture for ribbed glass material |
| CN109470568A (en) * | 2018-09-18 | 2019-03-15 | 中国石油天然气集团有限公司 | A kind of easy device for testing tubing string Sensitivity of Stress Corrosion in kind |
| CN110320107A (en) * | 2019-08-05 | 2019-10-11 | 洛阳恒诺锚固技术有限公司 | Horizontal tensile testing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130102 Termination date: 20150711 |
|
| EXPY | Termination of patent right or utility model |