CN220120729U - Fixed crack observation device and testing machine - Google Patents
Fixed crack observation device and testing machine Download PDFInfo
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- CN220120729U CN220120729U CN202321490508.5U CN202321490508U CN220120729U CN 220120729 U CN220120729 U CN 220120729U CN 202321490508 U CN202321490508 U CN 202321490508U CN 220120729 U CN220120729 U CN 220120729U
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- 238000012360 testing method Methods 0.000 title claims abstract description 76
- 239000002131 composite material Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
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Abstract
The utility model discloses a fixed crack observation device which is characterized by at least comprising a test camera and an adjusting bracket, wherein the test camera is arranged on the adjusting bracket; the adjusting bracket is provided with at least a first adjusting part and a second adjusting part, the first adjusting part and the second adjusting part are vertically arranged, and the first adjusting part is movably connected with the second adjusting part; the test camera is installed on the first adjusting part, and the second adjusting part is fixedly installed on a test fixture of the testing machine.
Description
Technical Field
The utility model relates to a composite material testing tool, in particular to a fixed crack observation device and a testing machine.
Background
The composite material plays a very important role in the development of modern science and technology. The research depth and application breadth of the composite material and the speed and scale of production and development of the composite material become one of important marks for measuring the advanced level of national science and technology. The composite material cannot be directly applied to actual life after being manufactured, a large number of experiments and a large number of data comparison are needed, and the composite material with the highest practical rate and the best safety is finally obtained through further improvement.
Composite type I interlaminar fracture toughness (Gic) is an important parameter in measuring the interlaminar failure resistance and evaluating damage to composites, and the Double Cantilever Beam (DCB) test method has been widely used to determine the Gic of composites. The technical scheme of the utility model aims at an observation device for cracks in the stretching process of a composite material. The traditional observation device usually adopts a camera to observe by matching with a tripod, and the mode is inconvenient to operate and has larger jitter; the used observation camera has smaller visual field, the crack of the needle-shaped glass fiber is irregularly expanded and unstable to expand, and the phenomenon that the camera cannot keep up with the crack frequently occurs.
Accordingly, there is a need for improvements in the art that address the above-described deficiencies.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present utility model is to provide a stationary crack observation device and a testing machine.
The fixed crack observation device is provided with at least a test camera and an adjusting bracket, wherein the test camera is arranged on the adjusting bracket; the adjusting bracket is provided with at least a first adjusting part and a second adjusting part, the first adjusting part and the second adjusting part are vertically arranged, and the first adjusting part is movably connected with the second adjusting part; the test camera is installed on the first adjusting part, and the second adjusting part is fixedly installed on a test fixture of the testing machine.
Preferably, the first adjusting part, the second adjusting part and the test fixture are mutually perpendicular.
Preferably, an adjusting support is arranged between the test camera and the first adjusting part, the adjusting support is at least provided with a base and an adjusting plate arranged on the base, the adjusting plate is vertically arranged between the base and the base, and the test camera is arranged on the adjusting plate.
Preferably, the adjusting plate is provided with an adjusting hole, the test camera is provided with an adjusting nut, and the adjusting nut is matched with the adjusting hole to realize the position adjustment of the test camera on the adjusting plate.
Preferably, the first adjusting part is provided with a first guide rail, and the adjusting plate is mounted on the first guide rail and can move along the extending direction of the first guide rail.
Preferably, a first clamping seat is arranged between the adjusting plate and the first guide rail, and the adjusting plate is arranged on the first guide rail through the first clamping seat.
Preferably, first limiting blocks are arranged at two ends of the first guide rail, and the first clamping seat is arranged between the first limiting blocks at two ends so as to avoid excessive moving stroke.
Preferably, the second adjusting part is provided with a second guide rail, a second clamping seat is arranged on the second guide rail, and one end of the first guide rail is fixed on the second clamping seat, so that the first guide rail can move along the extending direction of the second guide rail; the two ends of the second guide rail are provided with second limiting blocks, and the second clamping seats are arranged between the two ends of the second limiting blocks so as to avoid excessive moving travel.
Preferably, a fixing plate is arranged between the second guide rail and the test fixture, the fixing plate is in an L shape, the horizontal part of the L-shaped plate is fixed with the second guide rail, the vertical part is fixed with the test fixture through a rotary fixing shaft, and the vertical part can rotate by taking the rotary fixing shaft as a center, so that the second guide rail is driven to rotate at an angle.
Preferably, a fixture seat is arranged at the bottom of the test fixture, the fixing plate is fixed with the fixture seat, and the fixture seat is an lengthened fixture seat.
Preferably, the length of the rail mounting plate of the first rail in the first adjusting portion is greater than the length of the first rail, and the excess portion thereof extends to a side where the second rail fixes the clamp seat, so that the movement of the first rail on the second rail is restricted by the clamp seat and is defined between the second stopper and the clamp seat at one end.
Preferably, the clamp is used for clamping a sample, and the sample and the test camera are positioned in the same side direction of the test clamp.
Preferably, the extending direction of the adjusting plate is parallel to the mounting directions of the test fixture and the lengthened fixture seat.
Preferably, the test camera is a wide angle camera.
The technical scheme also provides a testing machine, and the crack observation device is fixedly arranged on one side of the clamp mounting seat of the testing machine.
By implementing the fixed crack observation device and the testing machine, the device has the following technical effects:
(1) According to the technical scheme, the first guide rail, the second guide rail and the adjusting plate are arranged, so that the test camera can be linearly adjusted in three directions of X/Y/Z axes, and the test camera can be ensured to effectively observe the crack condition in the stretching process of the sample;
(2) According to the technical scheme, the guide rail and the adjusting plate are arranged, so that the shooting position can be freely adjusted, and the operation is convenient and the shaking performance is low;
(3) According to the technical scheme, the wide-angle camera is adopted as the test camera, linear position adjustment in three directions is adopted, the observation visual field is wide, and tracking is convenient;
(4) The technical scheme of the utility model has the advantages of simple structure, convenient installation and wide application range.
Drawings
The conception, specific structure, and technical effects of the present utility model will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present utility model:
FIG. 1 is a schematic diagram of the structure of an observation device according to the technical scheme of the utility model;
FIG. 2 is a schematic view of one direction of FIG. 1;
FIG. 3 is another schematic view of FIG. 1;
FIG. 4 is a schematic view of the third orientation of FIG. 1;
FIG. 5 is a view of a sample scribe line and crack taken by the apparatus of FIG. 1;
in the figure:
1. testing a camera;
20. a first adjusting part; 200. a base; 201. an adjusting plate; 2010. an adjustment aperture; 2011. an adjusting nut; 202. a first guide rail; 203. a mounting plate; 2030. an extension; 204. a first clamping seat; 205. a first limiting block; 21. a second adjusting part; 210. a second guide rail; 211. a second clamping seat; 212. a second limiting block; 213. a fixing plate; 2130. a rotating fixed shaft 2130;
30. and a clamp seat.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The following describes the technical scheme of the present utility model in detail by adopting a specific embodiment and referring to fig. 1 to 4.
As shown in fig. 1-4, a fixed crack observing device at least comprises a test camera 1 and an adjusting bracket, wherein the test camera 1 is arranged on the adjusting bracket, and the test camera 1 adopts a wide-angle camera; the adjusting bracket is provided with at least a first adjusting part 20 and a second adjusting part 21, wherein the first adjusting part 20 and the second adjusting part 21 are vertically arranged, and the first adjusting part 20 is movably connected with the second adjusting part 21; the test camera 1 is mounted on the first adjusting part 20, and the second adjusting part 21 is fixedly mounted on a test fixture of the testing machine; and the first adjusting part 20, the second adjusting part 21 and the test fixture are mutually perpendicular.
Further, an adjusting support is disposed between the test camera 1 and the first adjusting portion 20, the adjusting support at least comprises a base 200 and an adjusting plate 201 mounted on the base 200, the adjusting plate 201 is vertically disposed between the base 200 and the base 200, and the test camera 1 is mounted on the adjusting plate 201.
An adjusting hole 2010 is formed in the adjusting plate 201, an adjusting nut 2011 is arranged on the test camera 1, and the adjusting nut 2011 is matched with the adjusting hole 2010 to achieve position adjustment of the test camera 1 on the adjusting plate 201.
The first adjusting portion 20 is provided with a first rail 202, and the adjusting plate 201 is mounted on the first rail 202 so as to be movable in the extending direction of the first rail 202.
A first clamping seat 204 is arranged between the adjusting plate 201 and the first guide rail 202, and the adjusting plate 201 is arranged on the first guide rail 202 through the first clamping seat 204.
The two ends of the first guide rail 202 are provided with first limiting blocks 205, and the first clamping seat 204 is arranged between the first limiting blocks 205 at the two ends so as to avoid excessive moving stroke.
The second adjusting part 21 is provided with a second guide rail 210, a second clamping seat 211 is arranged on the second guide rail 210, and one end of the first guide rail 202 is fixed on the second clamping seat 211, so that the first guide rail 202 can move along the extending direction of the second guide rail 210; the second limiting blocks 212 are arranged at two ends of the second guide rail 210, and the second clamping seat 211 is arranged between the second limiting blocks 212 at two ends so as to avoid excessive moving stroke.
A fixing plate 213 is arranged between the second guide rail 210 and the test fixture 3, the fixing plate 213 is in an L shape, the horizontal part of the L-shaped plate is fixed with the second guide rail, the vertical part is fixed with the test fixture 3 through a rotary fixing shaft 2130, and the vertical part can rotate by taking the rotary fixing shaft 2130 as the center, so that the second guide rail 210 is driven to rotate at an angle.
The bottom of the test fixture is provided with a fixture seat 30, the fixing plate 213 is fixed with the fixture seat 30, and the fixture seat 30 is an elongated fixture seat 30.
The length of the rail mounting plate 203 of the first rail 202 in the first adjusting portion 20 is greater than the length of the first rail 202, which extends beyond the partial positioning extension 2030 to one side of the second rail 210 where the clamp holder 30 is fixed, so that the movement of the first rail 202 on the second rail 210 is limited by the clamp holder 30 and is defined between the second stopper 212 and the clamp holder 30 at one end.
The clamp clamps the sample, and the sample and the test camera 1 are positioned at the same side direction of the test clamp.
The extending direction of the adjusting plate 201 is parallel to the mounting direction of the test jig and the extension jig base 30.
Based on the structure, the flow of using the device for crack observation is as follows:
s1: the lengthened clamp seat 30 can be connected with a testing machine in a bolt connection mode;
s2: the elongated jig base 30 is connected to the second rail 210 by the L-shaped fixing plate 213;
s3: mounting the first adjusting part 20 provided with the first guide rail 202 on the second guide rail 210, and mounting the test camera 1 on the adjusting plate 201 of the first adjusting part 20;
s4: the test specimen is held on the test jig and directed to one side of the test camera 1, the position of the test camera 1 is adjusted, the tester is executed, and the observation of the tensile crack is started to form a lens photographing result as shown in fig. 5.
It should be additionally noted that unless otherwise defined, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "connected" and "connected" as used in the specification and claims of this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "end", "side", etc. are used merely to indicate a relative positional relationship, which changes when the absolute position of the object to be described changes accordingly.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model herein. The utility model is intended to cover any adaptations or variations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.
It is to be understood that the utility model is not limited to the constructions herein above described and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (10)
1. The fixed crack observation device is characterized by at least comprising a test camera and an adjusting bracket, wherein the test camera is arranged on the adjusting bracket; the adjusting bracket is provided with at least a first adjusting part and a second adjusting part, the first adjusting part and the second adjusting part are vertically arranged, and the first adjusting part is movably connected with the second adjusting part; the test camera is installed on the first adjusting part, the second adjusting part is fixedly installed on a test fixture of the testing machine, and the first adjusting part, the second adjusting part and the test fixture are mutually perpendicular.
2. The stationary crack observation device according to claim 1, wherein an adjusting support is provided between the test camera and the first adjusting portion, the adjusting support having at least a base and an adjusting plate mounted on the base, the adjusting plate being vertically disposed between the adjusting plate and the base, the test camera being mounted on the adjusting plate;
the test camera adopts a wide-angle camera.
3. The stationary crack observation device according to claim 2, wherein the adjusting plate is provided with an adjusting hole, the test camera is provided with an adjusting nut, and the adjusting nut is matched with the adjusting hole to adjust the position of the test camera on the adjusting plate.
4. A stationary crack observation device as claimed in claim 3, characterized in that the first adjusting part is provided with a first guide rail, the adjusting plate being mounted on the first guide rail so as to be movable in the extending direction of the first guide rail;
a first clamping seat is arranged between the adjusting plate and the first guide rail, and the adjusting plate is arranged on the first guide rail through the first clamping seat;
the two ends of the first guide rail are provided with first limiting blocks, and the first clamping seats are arranged between the two ends of the first limiting blocks so as to avoid excessive moving travel.
5. The stationary crack observing device according to claim 4, wherein the second adjusting portion is provided with a second rail, a second holder is provided on the second rail, and one end of the first rail is fixed on the second holder so that the first rail can move along the extending direction of the second rail;
the two ends of the second guide rail are provided with second limiting blocks, and the second clamping seats are arranged between the two ends of the second limiting blocks so as to avoid excessive moving travel.
6. The stationary crack observing device according to claim 5, wherein a fixing plate is arranged between the second guide rail and the test fixture, the fixing plate is L-shaped, a horizontal portion of the L-shaped plate is fixed with the second guide rail, a vertical portion of the L-shaped plate is fixed with the test fixture through a rotating fixing shaft, and the vertical portion can rotate around the rotating fixing shaft, so that the second guide rail is driven to rotate angularly.
7. The stationary crack observation device according to claim 6, wherein a jig seat is provided at the bottom of the test jig, the fixing plate is fixed to the jig seat, and the jig seat is an elongated jig seat;
and the test clamp clamps a sample, and the sample and the test camera are positioned in the same side direction of the clamp.
8. The stationary crack observing device according to claim 7, wherein a length of the rail mounting plate of the first rail in the first adjusting portion is longer than a length of the first rail, and an excess portion thereof extends to a side of the second rail to which the clamp holder is fixed, such that movement of the first rail on the second rail is restricted by the clamp holder while being defined between the second stopper and the clamp holder at one end.
9. The stationary crack observing device according to claim 8, wherein the extending direction of the adjusting plate is parallel to the mounting directions of the test jig and the elongated jig base.
10. A testing machine, characterized in that a fixed crack observation device according to any one of the preceding claims 1-9 is fixedly arranged on one side of a test fixture mounting seat of the testing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321490508.5U CN220120729U (en) | 2023-06-12 | 2023-06-12 | Fixed crack observation device and testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321490508.5U CN220120729U (en) | 2023-06-12 | 2023-06-12 | Fixed crack observation device and testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220120729U true CN220120729U (en) | 2023-12-01 |
Family
ID=88889974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321490508.5U Active CN220120729U (en) | 2023-06-12 | 2023-06-12 | Fixed crack observation device and testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220120729U (en) |
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2023
- 2023-06-12 CN CN202321490508.5U patent/CN220120729U/en active Active
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