CN102661893A - Camera mounting and regulating mechanism for fatigue crack propagation experiment - Google Patents
Camera mounting and regulating mechanism for fatigue crack propagation experiment Download PDFInfo
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- CN102661893A CN102661893A CN2012101405896A CN201210140589A CN102661893A CN 102661893 A CN102661893 A CN 102661893A CN 2012101405896 A CN2012101405896 A CN 2012101405896A CN 201210140589 A CN201210140589 A CN 201210140589A CN 102661893 A CN102661893 A CN 102661893A
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Abstract
The invention discloses a camera mounting and regulating mechanism for a fatigue crack propagation experiment. The camera mounting and regulating mechanism comprises a camera light source mounting mechanism, a height position regulating mechanism and a connecting mechanism; a main body of the camera light source mounting mechanism is made of a polyvinyl chloride (PVC) plastic-steel door and window section; the camera light source mounting mechanism is provided with a camera and a light source component; the height position regulating mechanism consists of a horizontal connecting frame and a vertical connecting plate; one end of the camera light source mounting mechanism is connected with the horizontal connecting frame; the horizontal connecting frame is arranged in a chute guide rail of the vertical connecting plate in a sliding mode; positioning screw holes are formed in the chute guide rail of the vertical connecting plate; the vertical connecting plate is connected with one end of the connecting mechanism; and the other end of the connecting mechanism is connected with a camera motion driving mechanism. The camera mounting and regulating mechanism for the fatigue crack propagation experiment is simplified in structure, high in stability, low in cost and high in mounting accuracy.
Description
Technical field
The present invention relates to the camera installing mechanism, particularly design camera installing and adjusting mechanism used in a kind of metal material fatigue crack propagation test.
Background technology
Fatigue crack propagation test is a kind of a kind of test mode of studying the metal material Fatigue Fracture Characteristics through real-time measurement test specimen in the length of setting the following fatigue crack that produces of alternate load effect; Main fatigue crack propagation test form is the C that has precrack (T) the compact tension specimen test and the three-point bending crack expansion test of international standard regulation at present; In this case, fatigue crack extends along the direction straight line of precrack basically under the effect of setting alternate load.As the core content of fatigue crack propagation test is accurately to measure under the effect of setting test load each fatigue crack length constantly, thereby draws institute's material fatigue crack length material fracturing mechanics data such as rule and fatigue crack growth rate, FATIGUE CRACK GROWTH life-span over time of measuring and monitoring the growth of standing timber.
The germinating of fatigue crack and expansion are a complicacy and nonlinear Evolution process slowly; Traditional microscopic method detection is often accomplished by manual work or most of link needs artificial the participation; Inefficiency not only; And be vulnerable to the influence of testing staff's subjective factor, can not guarantee the efficiency and precision that detects can not satisfy the requirement of test.Adopt the crackle online test method of machine vision technique, can accomplish the detection and the further analyzing and processing of crackle intuitively, accurately, in real time.
The machine vision crack detecting method adopts the real-time testing agency of camera as fatigue crack; For guaranteeing that the accuracy that crackle test specimen IMAQ and crack length calculate improves the precision that crackle is measured; Position to camera has strict requirement, both must guarantee that the strictness of camera center line is perpendicular to crackle test specimen surface, in addition; For satisfying testing requirements, light source also there is strict position installation requirement.
Summary of the invention
The deficiency huge for the mechanism that overcomes the camera adjusting mechanism in the existing machine vision crack detecting method, that stability reduces, expense increases, the fatigue crack propagation test camera installing and adjusting mechanism that the present invention provides a kind of designs simplification, has good stability, expense reduces, installation accuracy is high.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of fatigue crack propagation test camera installing and adjusting mechanism; Comprise camera light source installing mechanism, height and position adjusting mechanism and bindiny mechanism; The main body of camera light source installing mechanism is the PVC plastics-steel shapes for door and window; On the said camera light source installing mechanism camera and light source assembly are installed, the height and position adjusting mechanism is made up of with vertical web joint horizontal link, and an end of camera light source installing mechanism links to each other with horizontal link; Horizontal link is slidably mounted in the chute guide rail of vertical web joint; Be processed with positioning screw hole in the said vertical web joint chute guide rail, vertical web joint links to each other with bindiny mechanism one end, and the other end of bindiny mechanism is connected with the cam movement driving mechanism.The fatigue crack propagation test camera installing and adjusting mechanism that the present invention provides a kind of designs simplification, has good stability, expense reduces, installation accuracy is high.
Further, said camera light source is an annular light source, and annular light source is enclosed within on the camera lens of camera and through dog screw annular light source is fixed on the light source bracing frame, and the other end of light source bracing frame is connected with the PVC plastics-steel shapes for door and window through plastic screw
Further again; The model of said PVC plastics-steel shapes for door and window is to confirm according to the size of selecting for use camera and camera lens; Dimensioned according to CCD camera and camera lens on the PVC plastics-steel shapes for door and window goes out the camera mounting positioning groove, and several cameras and light source connecting line geometrical clamp are installed.
Further; Said vertical web joint is the chute guide rail mechanism; Said chute guide rail is processed with several registration bolts hole along its length; Last row of positioning bolt hole or two rows are that half through hole is used for linking to each other with T type bindiny mechanism one end, and other positioning bolt hole is through hole and is used for linking to each other with horizontal link.
Said horizontal link comprises base and cover plate; Base comprise installation link that camera light source installing mechanism is installed with link to each other with vertical web joint be connected the location slide plate; Link is installed and is connected the location slide plate and can passes through the welding manner connection; Also can be made of one structure; It is guide groove mechanism that the link main body is installed, and is processed with camera on the cell wall and is connected positioning bolt hole with several with light source line fairlead and is used for linking to each other with cover plate, connects to locate to be processed with one on the slide plate and to arrange or two arrange the connection positioning bolt holes and be used for linking to each other with vertical web joint; Be inserted in the chute guide rail on the vertical web joint connecting the location slide plate, fix with vertical web joint through bolt after adjusting height and position.
The PVC plastics-steel shapes for door and window connecting link of said camera light source installing mechanism is inserted in the horizontal link base guide groove, covers to fix through bolt and base after cover plate compresses it.
Said bindiny mechanism is the web joint of T type or perpendicular type; Form with vertical link two parts by horizontal link; The two ends of web joint all are processed with positioning bolt hole; The vertical link of web joint links to each other with vertical web joint, and the horizontal link of web joint is inserted in the gathering sill of cam movement driving mechanism.
The web joint of said T type or perpendicular type, the positioning bolt hole of horizontal link of web joint and vertical link is symmetric offset spread.Can make progress also can be downward for the vertical link of bindiny mechanism during installation, to adapt to the fatigue tester of different bracket heights.
Technical conceive of the present invention is: fatigue crack propagation test can be carried out on the high and low frequency fatigue tester of various models; For mating various types, camera should can carry out the amplitude adjustment in short transverse, and the camera position adjusting mechanism is made up of cam movement driving mechanism and camera installing mechanism; The accurate adjustment of the little range of camera position drives driving mechanism by stepper motor and realizes; And the especially position adjustment of short transverse is adjusted in the position on a large scale, and huge as adopting step motor control to realize then causing mechanism, stability reduces; Problems such as expense increase, the present invention realizes through the installing mechanism of deft design
For guaranteeing the steady and audible of IMAQ, must insulate between the installation frame of camera and the camera, if specialized production in enormous quantities; Should adopt the plastic material injection mo(u)lding, but require that specialized apparatus and mould are arranged, cost is very high; Another kind of mode is to adopt metal material between camera and metal supporting frames, to increase insulating material but this mode complex structure, and insulativity is relatively poor, and the present invention adopts the PVC plastics-steel shapes for door and window through simply processing the back as the camera mounting bracket; Simply; Good insulating, cost is low, and the camera position installation accuracy is high.
Beneficial effect of the present invention mainly shows: simplified structure, have good stability, the reduction expense.
Description of drawings
Fig. 1 is a fatigue crack propagation test camera installing and adjusting mechanism one-piece construction synoptic diagram of the present invention, wherein, (a) is the structure front elevation, (b) is the structure vertical view.
Fig. 2 is a PVC plastics-steel shapes for door and window connecting link structural representation of the present invention, wherein, (a) is the structure front elevation, (c) is the structure vertical view, (b) is PVC plastics-steel shapes for door and window sectional view.
Fig. 3 is a light source bracket structural representation of the present invention, wherein, (a) is the structure front elevation, (c) is the structure vertical view, (b) is that structure A is to sectional view.
Fig. 4 connects synoptic diagram for camera light source assembly of the present invention.
Fig. 5 for the vertical web joint of the present invention with T type web joint structure and be connected synoptic diagram, wherein, (b) be the structure left view, (a) be B to the structural section view, be that structure C is to view (c).
Fig. 6 is the horizontal link understructure of a present invention synoptic diagram, wherein, (a) is structural front view, (b) be A to topology view, (c) be the structure vertical view.
Fig. 7 is the horizontal link covering plate structure of a present invention synoptic diagram, wherein, (a) is structural front view, (b) be A to cross sectional view, (c) be the structure vertical view.
Fig. 8 is connected synoptic diagram for the vertical web joint of the present invention with the horizontal connecting plate base, wherein, a) be structural front view, (b) be B to topology view, (c) be the structure vertical view.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
With reference to Fig. 1～Fig. 8, a kind of fatigue crack propagation test camera installing and adjusting mechanism (a) is the structure front elevation; (b) be the structure vertical view; Camera installing and adjusting mechanism one-piece construction as shown in the figure is by camera light source installing mechanism 1, height and position adjusting mechanism 2 and 3 and bindiny mechanism 4 form, the main body of camera light source installing mechanism 1 is certain PVC plastics-steel shapes for door and window 11; The PVC plastics-steel shapes for door and window is simply processed; With camera 12 installing and locating, through light source bracing frame 14 and dog screw annular light source 15 is installed, the 13rd, the camera lens that is complementary with camera.The height and position adjusting mechanism is made up of with vertical web joint 3 horizontal link 2; One end of camera light source installing mechanism 1 links to each other with horizontal link 2; Horizontal link 2 can be in the chute guide rail of vertical web joint 3 motion adjustment position, the back, location is through screw retention, vertical web joint 3 links to each other with bindiny mechanism 4 one ends; The other end of bindiny mechanism 4 is inserted in the gathering sill of cam movement driving mechanism, locatees through bolt.
Fig. 2 is a PVC plastics-steel shapes for door and window connecting link structural representation of the present invention, (a) is the structure front elevation, (c) is the structure vertical view, (b) is PVC plastics-steel shapes for door and window sectional view.PVC plastics-steel shapes for door and window 11 according to the suitable types of size Selection cross sectional shape shown in Fig. 2 b of camera and camera lens; Dimensioned according to the CCD camera on PVC plastics-steel shapes for door and window 11 goes out camera locating slot 111; 112 is camera locating slot bottom surface, and 113 is camera and light source connecting line geometrical clamp.
Fig. 3: for light source bracket 14 structural representations of the present invention, (a) being the structure front elevation, (c) is the structure vertical view; (b) be that structure A is to sectional view; The selected light source of this patent is an annular light source, and 141 is light source bracket and annular light source link, is processed with the center hole 1412 that allows camera lens to pass through is connected the location with light source screw 1411 above; The size of center hole 1412 and the institute's camera lens of selecting for use coupling, light source connects the screw 1411 and the annular light source size match of selecting for use of location.142 is the link of light source bracket and camera and PVC plastics-steel shapes for door and window, and the screw 1421 of location should mate with selecting for use camera.
Fig. 4 connects synoptic diagram for camera light source assembly of the present invention; Camera 12 with mate camera lens 13 and be connected to form CCD camera assembly through standard interface; CCD camera assembly is put into the camera locating slot 111 of plastics-steel shapes for door and window connecting link 11 as shown in Figure 2; The link 141 of annular light source 15 and light source bracket 14 is through dog screw 1411 light source assembly that is composed of a fixed connection; Form light source assembly and be enclosed within on the camera lens through center pit 1412, light source bracket link 142 links to each other with camera through the locating surface that 4 plastics dog screws 1421 pass the PVC plastics-steel shapes for door and window.
Fig. 5: for the vertical web joint 3 of the present invention with T type web joint 4 structures and be connected synoptic diagram; (b) be the structure left view; (a) be that B is to the structural section view; (c) be structure C to view, T type web joint 4 is made up of with vertical link 42 horizontal link 41, is processed with several positioning screw holes 411 on the horizontal link 41; Locate through bolt in the gathering sill with the horizontal link 41 insertion cam movement driving mechanism worktable of T type web joint; Be processed with a row or two registration screws on the vertical link 42 of T type web joint 4 and be connected the location with vertical web joint 3 through bolt 421, can make progress also can be downward for the vertical link 42 of bindiny mechanism 4 during installation, to adapt to the fatigue tester of different bracket heights.Be processed with guiding and positioning runner 31 on the vertical web joint 3, positioning screw hole 32 and 33, positioning screw hole 32 are that a row or two rows are used for linking to each other with T type web joint 4, are half through hole, and positioning screw hole 33 is used for linking to each other with horizontal link 2 for number row, is through hole.
Camera installing and adjusting mechanism one-piece construction is by camera light source installing mechanism 1; Height and position adjusting mechanism 2 and 3 and bindiny mechanism 4 form; The main body of camera light source installing mechanism 1 is certain PVC plastics-steel shapes for door and window 11; The PVC plastics-steel shapes for door and window is simply processed,, and annular light source 15 is installed through light source bracing frame 14 and dog screw with camera 12 installing and locating.The height and position adjusting mechanism is made up of with vertical web joint 3 horizontal link 2; One end of camera light source installing mechanism 1 links to each other with horizontal link 2; Horizontal link 2 can be in the chute guide rail of vertical web joint 3 motion adjustment position, the back, location is through screw retention, vertical web joint 3 links to each other with bindiny mechanism 4 one ends; The other end of bindiny mechanism 4 is inserted in the gathering sill of cam movement driving mechanism, locatees through bolt.
, simple after the present invention adopts the PVC plastics-steel shapes for door and window through simple processing as the camera mounting bracket, good insulating, cost is low, and the camera position installation accuracy is high.
Claims (8)
1. fatigue crack propagation test camera installing and adjusting mechanism; It is characterized in that: said camera installing and adjusting mechanism comprises camera light source installing mechanism, height and position adjusting mechanism and bindiny mechanism; The main body of camera light source installing mechanism is the PVC plastics-steel shapes for door and window; Camera and light source assembly are installed on the said camera light source installing mechanism, and the height and position adjusting mechanism is made up of with vertical web joint horizontal link, and an end of camera light source installing mechanism links to each other with horizontal link; Horizontal link is slidably mounted in the chute guide rail of vertical web joint; Be processed with the connection positioning screw hole in the chute guide rail of said vertical web joint, vertical web joint links to each other with bindiny mechanism one end, and the other end of bindiny mechanism is connected with the cam movement driving mechanism.
2. fatigue crack propagation test camera installing and adjusting mechanism as claimed in claim 1; It is characterized in that: said camera light source is an annular light source; Annular light source is enclosed within on the camera lens of camera and through dog screw annular light source is fixed on the light source bracing frame, and the other end of light source bracing frame is connected with the PVC plastics-steel shapes for door and window through plastic screw.
3. according to claim 1 or claim 2 fatigue crack propagation test camera installing and adjusting mechanism; It is characterized in that: the dimensioned according to CCD camera and camera lens on the PVC plastics-steel shapes for door and window goes out the camera mounting positioning groove, and several cameras and light source connecting line geometrical clamp are installed.
4. according to claim 1 or claim 2 fatigue crack propagation test camera installing and adjusting mechanism; It is characterized in that: said vertical web joint is the chute guide rail mechanism; The chute guide rail is processed with several registration bolts hole along its length; Last row of positioning bolt hole or two rows are that half through hole is used for linking to each other with T type bindiny mechanism one end, and other positioning bolt hole is through hole and is used for linking to each other with horizontal link.
5. according to claim 1 or claim 2 fatigue crack propagation test camera installing and adjusting mechanism; It is characterized in that: said horizontal link comprises base and cover plate; Base comprises to be installed link and is connected the location slide plate, link is installed and is connected location slide plate connection, and it is guide groove mechanism that the link main body is installed; Being processed with camera on the cell wall is connected positioning bolt hole with light source line fairlead and is used for linking to each other with cover plate with several; Connect and to be processed with a row on the slide plate of location or two row's bolts hole are used for linking to each other with vertical web joint, slide plate is located in connection be inserted in the chute guide rail on the vertical web joint, fix with vertical web joint through bolt after adjusting height and position.
6. according to claim 1 or claim 2 fatigue crack propagation test camera installing and adjusting mechanism; It is characterized in that: the PVC plastics-steel shapes for door and window connecting link of said camera light source installing mechanism is inserted into horizontal link base and installs in the guide groove of link, covers through bolt cover plate and base to be fixed after cover plate compresses it.
7. according to claim 1 or claim 2 fatigue crack propagation test camera installing and adjusting mechanism; It is characterized in that: said bindiny mechanism is the web joint of T type or perpendicular type; Form with vertical link two parts by horizontal link; The two ends of web joint all are processed with positioning bolt hole, and the vertical link of web joint links to each other with vertical web joint, and the horizontal link of web joint is inserted in the gathering sill of cam movement driving mechanism and links to each other with driving mechanism.
8. fatigue crack propagation test camera installing and adjusting mechanism as claimed in claim 7 is characterized in that: the web joint of said T type or perpendicular type, the positioning bolt hole of horizontal link of web joint and vertical link is symmetric offset spread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101405896A CN102661893A (en) | 2012-05-08 | 2012-05-08 | Camera mounting and regulating mechanism for fatigue crack propagation experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101405896A CN102661893A (en) | 2012-05-08 | 2012-05-08 | Camera mounting and regulating mechanism for fatigue crack propagation experiment |
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| Publication Number | Publication Date |
|---|---|
| CN102661893A true CN102661893A (en) | 2012-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101405896A Pending CN102661893A (en) | 2012-05-08 | 2012-05-08 | Camera mounting and regulating mechanism for fatigue crack propagation experiment |
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| CN (1) | CN102661893A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108924394A (en) * | 2018-07-18 | 2018-11-30 | 耐世特凌云驱动系统（芜湖）有限公司 | The monitoring controlled camera of production |
| CN111208024A (en) * | 2020-03-05 | 2020-05-29 | 长江大学 | Dynamic crack detection experimental device and method for high-pressure pipe |
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| US4364113A (en) * | 1979-08-23 | 1982-12-14 | Deutsche Forschungs- Und Versuchsanstalt Fur Luft- Und Raumfahrt E.V. | Crack development measuring equipment |
| US4716459A (en) * | 1985-01-25 | 1987-12-29 | Nippon Kokan Kabushiki Kaisha | Fatigue crack position detection apparatus |
| JP2001281119A (en) * | 2000-03-28 | 2001-10-10 | Japan Tobacco Inc | Fatigue crack testing device |
| CN2856995Y (en) * | 2005-12-09 | 2007-01-10 | 中国科学院金属研究所 | Surface observer under conditions of dynamic loading |
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2012
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4364113A (en) * | 1979-08-23 | 1982-12-14 | Deutsche Forschungs- Und Versuchsanstalt Fur Luft- Und Raumfahrt E.V. | Crack development measuring equipment |
| US4716459A (en) * | 1985-01-25 | 1987-12-29 | Nippon Kokan Kabushiki Kaisha | Fatigue crack position detection apparatus |
| JP2001281119A (en) * | 2000-03-28 | 2001-10-10 | Japan Tobacco Inc | Fatigue crack testing device |
| CN2856995Y (en) * | 2005-12-09 | 2007-01-10 | 中国科学院金属研究所 | Surface observer under conditions of dynamic loading |
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| 周寅 等: "基于NI的疲劳裂纹扩展试验摄像头运动控制系统", 《机电工程》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108924394A (en) * | 2018-07-18 | 2018-11-30 | 耐世特凌云驱动系统（芜湖）有限公司 | The monitoring controlled camera of production |
| CN111208024A (en) * | 2020-03-05 | 2020-05-29 | 长江大学 | Dynamic crack detection experimental device and method for high-pressure pipe |
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Application publication date: 20120912 |