CN114088515A - Monocular vision multi-view crack propagation monitoring device - Google Patents

Monocular vision multi-view crack propagation monitoring device Download PDF

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Publication number
CN114088515A
CN114088515A CN202111290854.4A CN202111290854A CN114088515A CN 114088515 A CN114088515 A CN 114088515A CN 202111290854 A CN202111290854 A CN 202111290854A CN 114088515 A CN114088515 A CN 114088515A
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CN
China
Prior art keywords
bottom support
base
crack propagation
monitoring device
stay tube
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Pending
Application number
CN202111290854.4A
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Chinese (zh)
Inventor
韩斌
赵威
黄珊
宋坤林
徐博
王嘉宁
张涛
牛得田
施风华
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National High Speed Train Qingdao Technology Innovation Center
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National High Speed Train Qingdao Technology Innovation Center
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Priority to CN202111290854.4A priority Critical patent/CN114088515A/en
Publication of CN114088515A publication Critical patent/CN114088515A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G01N3/06—Special adaptations of indicating or recording means
    • G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/043—Allowing translations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/2007—Undercarriages with or without wheels comprising means allowing pivoting adjustment
    • F16M11/2014—Undercarriages with or without wheels comprising means allowing pivoting adjustment around a vertical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
    • F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
    • F16M11/28—Undercarriages for supports with one single telescoping pillar
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/08—Railway vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0001—Type of application of the stress
    • G01N2203/0005—Repeated or cyclic
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058—Kind of property studied
    • G01N2203/006—Crack, flaws, fracture or rupture
    • G01N2203/0062—Crack or flaws
    • G01N2203/0066—Propagation of crack
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/067—Parameter measured for estimating the property
    • G01N2203/0682—Spatial dimension, e.g. length, area, angle

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

The utility model belongs to the technical field of rail vehicle crack monitoring technology and specifically relates to a monocular vision multi-view crack growth monitoring devices is related to, the on-line screen storage device comprises a base, install the test bench that is used for testing the sample on the base, still be provided with a plurality of camera group, a plurality of that are used for surveying the sample on the base the camera group all can remove around the test bench and survey, mobile camera group to the realization is walked around to the sample and is detected, and whole process can realize the diversified detection of multi-angle, and easy operation detects the convenience.

Description

Monocular vision multi-view crack propagation monitoring device
Technical Field
The application relates to the technical field of rail vehicle crack monitoring, in particular to a monocular vision multi-view crack propagation monitoring device.
Background
At present, the rail transit in China is in a rapid development stage, and the quantity of rail vehicles kept in China is continuously increased. By the end of 2020, the number of railway locomotives in the country is 2.2 ten thousand, wherein 0.80 ten thousand diesel locomotives and 1.38 ten thousand electric locomotives. The number of the railway passenger cars in the country is 7.6 thousands, wherein the motor train unit is 3918 standard group and 31340. 49424 rail transit attached vehicles are owned in urban rail transit, which is increased by 20.6% in the last year.
However, due to the complex working environment and the severe operating conditions of the rail vehicle, many critical structures or parts of the vehicle frequently have failure accidents during service, wherein the failure is most prominent in the fatigue cracks of the structures. However, with the complication of service conditions and line conditions of modern vehicles, the running safety of the vehicles is challenged, and welding defects are brought into the welding process inevitably, so that welding seams become a main area for crack initiation. It has been found that crack-containing parts under alternating loads, even when the load is below the fatigue strength limit of the material itself, will rapidly propagate and fracture, resulting in catastrophic failure.
Therefore, the crack resistance and the fracture resistance of a rail vehicle structure need to be tested, but for a large-scale welding framework such as a rail vehicle framework, the processing technology is quite complex, a plurality of welding parts exist in a local area of the structure, at present, a monitoring device capable of carrying out crack propagation testing and analysis on a plurality of crack areas in the local part of the framework is lacked, and the traditional device is influenced by vibration energy transmitted by a fatigue testing machine, so that the fatigue mechanical behavior of the crack area of the framework under the external load action cannot be accurately monitored.
In view of the above-mentioned related technologies, the inventor considers that it is very important to develop a rail vehicle frame crack propagation monitoring device with multi-view synchronous monitoring and excellent test precision.
Disclosure of Invention
In order to provide a simple structure, can accurately monitor the fatigue mechanics action of framework crackle under the external load effect, the application provides a monocular vision multi-view crack propagation monitoring devices.
The application provides a many visual angles of monocular vision crack propagation monitoring devices adopts following technical scheme:
the utility model provides a monocular vision multi-view crack propagation monitoring devices, includes the base, install the test bench that is used for testing the sample on the base, still be provided with a plurality of camera group that is used for surveying the sample on the base, a plurality of camera group all can round the test bench removal detection.
Through adopting above-mentioned technical scheme, the in-process of detecting the sample is placed the sample in advance and is carried out the loading on the test bench, and the camera group is the industry camera, is connected with external image processor through wireless transmission's mode, removes the camera group to the realization is moved the sample and is detected, and whole process can realize the diversified exploration of multi-angle, easy operation, and it is convenient to detect.
Optionally, the ring channel has been seted up on the upper surface of base, the below of camera group is provided with the bottom support, the bottom support slides in the ring channel, the top of bottom support is provided with the mounting panel, the connection can be dismantled to the camera group and the mounting panel deviates from bottom support one side, still be provided with the adjusting part that is used for adjusting camera group height between bottom support and the mounting panel.
Through adopting above-mentioned technical scheme, through the interval between the adjustable mounting panel of adjusting part and the bottom support, also can dismantle between camera unit and the mounting panel and be connected simultaneously, promoted the convenience of camera group installation, through setting up the ring channel, the bottom support of being convenient for rotates round the test bench in the ring channel.
Optionally, the adjusting part comprises a supporting tube arranged on the bottom support, an adjusting rod sliding on the supporting tube, an adjusting bolt in threaded connection with the outer wall of the upper end of the supporting tube, and a limiting protrusion arranged on the outer wall of the end, extending into the inner cavity of the supporting tube, of the adjusting rod, a limiting groove is formed in the inner wall of the supporting tube along the axial direction of the limiting groove, the limiting protrusion slides in the limiting groove, and a connecting piece is arranged between one end, extending out of the supporting tube, of the adjusting rod and the mounting plate.
Through adopting above-mentioned technical scheme, when adjusting the height of whole camera group, it is vertical upwards to pull out the regulation pole for spacing arch is vertical upwards to slide under the effect of spacing groove, and when the bracing piece stretches out appointed height, rotates adjusting bolt, makes adjusting bolt's tip support tightly on the outer wall of adjusting the pole, thereby realizes the altitude mixture control of camera group.
Optionally, the supporting tube is rotatably connected to the bottom support, the bottom support is arranged in a hollow mode, the lower end of the bottom support is communicated with the outside, the lower end of the supporting tube is located in an inner cavity of the bottom support, and a driving assembly which drives the supporting tube to rotate synchronously in the sliding process of the bottom support is arranged in the inner cavity of the bottom support.
Through adopting above-mentioned technical scheme, the in-process of rotating the bottom support under drive assembly's effect for stay tube and camera group take place simultaneously and rotate, thereby realize that the camera group moves along with the bottom support and rotates, the camera of guarantee camera always towards the position that the test piece detected, the in-process of removal bottom support need not adjust the orientation of camera group camera for the later stage completely.
Optionally, the drive assembly includes driven gear, the reversing gear of rotation connection on bottom support inner chamber lateral wall that the coaxial driven gear of fixing on stay tube lower extreme outer wall, coaxial driving gear, the ring gear of setting on the base of fixing in the reversing gear is changeing epaxial, reversing gear and driven gear meshing, the annular caulking groove has been seted up on the upper surface of base, the ring gear is fixed in the annular caulking groove, the driving gear meshes with the ring gear.
Through adopting above-mentioned technical scheme, the in-process of artificial whole bottom support of removal for the driving gear rotates under the effect of ring gear, thereby the driving gear is synchronous and coaxial rotation with the reversing gear, and the diameter of driving gear is greater than the diameter of reversing gear, and reversing gear and driven gear mesh, the diameter of driven gear is greater than the diameter of reversing gear, through foretell setting, thereby makes the stay tube rotate slowly along with the removal of whole bottom support.
Optionally, the connecting piece includes a connecting pipe fixed on one side of the mounting plate, which is away from the camera set, and a locking bolt in threaded connection with the connecting pipe, one end of the adjusting rod extending out of the supporting pipe is inserted into an inner cavity of the connecting pipe, and one end of the locking bolt extending into the inner cavity of the connecting pipe is abutted against the outer wall of the adjusting rod.
Through adopting above-mentioned technical scheme, the in-process of connecting mounting panel and regulation pole is inserted the one end that stretches out the support tube outside with the regulation pole and is established in the inner chamber of connecting pipe, rotates the locking bolt for the locking bolt supports tightly on the outer wall of adjusting the pole, thereby makes regulation pole and stay tube be difficult to separate.
Optionally, the mounting panel is kept away from bottom support one side and is seted up the spout, the mounting panel is provided with the connecting plate towards one side of camera group, be fixed with the slider that slides in the spout on the connecting plate, threaded connection has spacing bolt on the slider, set up the waist shape hole with the spout inner chamber intercommunication on the lateral wall of mounting panel, spacing bolt slides in waist shape downthehole, camera group fixed connection is on the connecting plate.
Through adopting above-mentioned technical scheme, can adjust the interval between camera unit and the test piece to the defect of more clear detection test piece, in the accommodation process, rotate limit bolt in advance for limit bolt slides along the length direction of mounting panel, when sliding the camera unit to appointed position, the spacing bolt of antiport, thereby make the connecting plate be difficult to slide on the mounting panel.
Optionally, the base is a circular truncated cone-shaped vibration isolation foundation, the test bed is a fatigue testing machine, and the test bed is located at the center of the base.
Through adopting above-mentioned technical scheme for whole base has certain shock attenuation performance, has promoted test testing process's stability.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the sample is subjected to the orbiting detection, the whole process can realize multi-angle and multi-direction detection, the operation is simple, and the detection is convenient;
2. the camera group rotates along with the movement of the bottom support, and in the testing and adjusting process, the direction of a lens of the camera group does not need to be adjusted independently, so that the detection convenience is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present embodiment.
Fig. 2 is an exploded view of the structure at the mounting plate portion in the present embodiment.
Fig. 3 is an exploded view of the overall structure of the adjusting assembly in this embodiment, which is mainly used to show the lumen structure of the support tube.
Fig. 4 is a schematic view of the inner cavity structure of the bottom support in the embodiment.
Reference numerals: 1. a base; 2. a test bed; 3. a camera set; 11. an annular groove; 5. a bottom support; 6. mounting a plate; 7. an adjustment assembly; 71. supporting a tube; 72. adjusting a rod; 73. adjusting the bolt; 721. a limiting bulge; 711. a limiting groove; 8. a connecting member; 9. a drive assembly; 91. a driven gear; 92. a reversing gear; 93. a driving gear; 94. a ring gear; 12. an annular caulking groove; 81. a connecting pipe; 82. locking the bolt; 61. a chute; 62. a connecting plate; 63. a slider; 64. a limit bolt; 65. a waist-shaped hole.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a monocular vision multi-view crack propagation monitoring device.
Referring to fig. 1, a monocular vision multi-view crack growth monitoring device comprises a base 1, wherein the base 1 is a truncated cone-shaped vibration isolation foundation, in the manufacturing process of the vibration isolation foundation, a groove is formed in a foundation body in advance, vibration isolation sand and vibration isolation carbon flowers are laid at the bottom of the vibration isolation foundation, a layer of cement is laid on the upper surface of each vibration isolation carbon flower, a concrete foundation is laid, and meanwhile, a polystyrene vibration isolation plate is buried in the concrete foundation, so that the base 1 with the vibration isolation performance is formed.
Referring to fig. 1, a test bed 2 is arranged at the center of a base 1, the test bed 2 is a fatigue testing machine, an external sample is placed on the fatigue testing machine to perform an outer wall loading test, and at least one camera set 3 is arranged on the periphery of the test bed 2.
Referring to fig. 1, a camera group 3 is an industrial camera and belongs to a vision sensor, the camera group 3 is connected with an external image processor and a PLC device in a wireless connection manner, so that the camera group 3 monitors a test part in real time, the camera group 3 adopts a monocular multi-view measurement method in the monitoring process, and a monocular vision measurement method can obtain displacement strain information of a crack area by monitoring speckle images on the surface of a sample, and further synchronously monitor and record surface field information of the crack area.
Referring to fig. 1, two camera groups 3 all can carry out three hundred sixty degrees around the test bench 2 and encircle the removal detection to the realization is provided with bottom support 5 to the all-round monitoring of sample, and camera group 3's below, base 1 has annular groove 11 in the fashioned in-process reservation, has buried ring rail in advance in the annular groove 11, and bottom support 5 slides on ring rail through the mode of gyro wheel.
Referring to fig. 2, the mounting plate 6 is arranged above the base 1, the dovetail-shaped sliding groove 61 is formed in the upper surface of the mounting plate 6, the connecting plate 62 is arranged on one side of the mounting plate 6, which is away from the bottom support 5, the sliding block 63 which slides in the sliding groove 61 is integrally formed on one side of the connecting plate 62, which faces the mounting plate 6, and the connecting plate 62 can slide along the radial direction of the base 1.
Referring to fig. 1 and 2, waist shape hole 65 has been seted up on the lateral wall of mounting panel 6, waist shape hole 65 is the intercommunication setting with the inner chamber of spout 61, threaded connection has limit bolt 64 on the lateral wall of slider 63, thereby it is connected with connecting plate 62 to pass through the fixed or bolt fastening's of joint with camera group 3, rotate limit bolt 64 and stir, make connecting plate 62 slide to the designated distance after reverse limit bolt 64, thereby alright adjust the interval between camera group 3 and the sample, monitoring function's nimble variety has been promoted.
Referring to fig. 1 and 3, an adjusting component 7 for adjusting the height of the camera set 3 is arranged between the bottom support 5 and the mounting plate 6, the adjusting component 7 includes a support tube 71, the support tube 71 is vertically arranged and rotatably connected to the bottom support 5, the bottom support 5 is hollow and has a lower end communicated with the outside, and the lower end of the support tube 71 extends into the inner cavity of the bottom support 5.
Referring to fig. 1 and 4, a driving assembly 9 for synchronously driving the supporting tube 71 to rotate during the sliding process of the bottom support 5 is disposed in the inner cavity of the bottom support 5, the driving assembly 9 may be an electric motor or a hydraulic motor, it is most preferable in this application that the driving assembly 9 includes a driven gear 91, a reversing gear 92, a driving gear 93 and a gear ring 94, the driven gear 91 is coaxially fixed on an outer wall of one end of the supporting tube 71 extending into the inner cavity of the bottom support 5, the reversing gear 92 is rotatably connected in the inner cavity of the bottom support 5 and engaged with the driven gear 91, and the diameter of the driven gear 91 is larger than that of the reversing gear 92.
Referring to fig. 1 and 4, the driving gear 93 is coaxially fixed on the rotating shaft of the reversing gear 92, the diameter of the driving gear 93 is larger than that of the reversing gear 92, an annular caulking groove 12 is reserved on the upper surface of the base 1 in advance in the manufacturing process of the base 1, and the gear ring 94 is embedded and fixed in the annular caulking groove 12.
Referring to fig. 3 and 4, the adjusting assembly 7 further includes an adjusting rod 72, an adjusting bolt 73 and a limiting protrusion 721, the adjusting rod 72 is vertically disposed, the limiting protrusion 721 is fixed on a side wall of a lower end of the adjusting rod 72, a limiting groove 711 is axially formed in an inner wall of the supporting tube 71 along the inner wall, the limiting protrusion 721 vertically slides in the limiting groove 711, and the adjusting bolt 73 is threadedly connected to a side wall of an outlet portion of an upper end of the supporting tube 71. In an initial state, the adjusting bolt 73 abuts against the outer wall of the adjusting rod 72, and when the height of the camera set 3 needs to be increased, the adjusting bolt 73 is rotated to enable the end portion of the adjusting bolt 73 to be away from the adjusting rod 72, the adjusting rod 72 is pulled vertically upwards, and when the camera set 3 is adjusted to a specified height, the adjusting bolt 73 is reversed, so that the supporting tube 71 and the adjusting rod 72 are difficult to slide relatively.
Referring to fig. 3 and 4, a connecting member 8 is disposed between one end of the adjusting rod 72 extending out of the supporting tube 71 and the mounting plate 6, the connecting member 8 includes a connecting tube 81 and a locking bolt 82, the connecting tube 81 is fixed on one side of the mounting plate 6 away from the camera group 3, the upper end of the adjusting rod 72 is inserted into an inner cavity of the connecting tube 81, and the locking bolt 82 is rotated, so that the mounting plate 6 and the adjusting rod 72 are difficult to be separated from each other.
The implementation principle of the monocular vision multi-view crack propagation monitoring device in the embodiment of the application is as follows: in-process of detecting the sample, place the sample and carry out outside loading on fatigue testing machine, then promote through manpower or external equipment's mode and support base 1 and rotate, under driving gear 93 and ring gear 94's effect, make camera group 3 rotate slowly along with the removal of bottom support 5, the industrial camera on the camera group 3 can be surveyed the sample position in real time, send the testing result to on the external image processor through wireless transmission's mode, thereby the realization is to the monitoring analysis of sample.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a monocular vision multi-view crack propagation monitoring devices which characterized in that: including base (1), install test bench (2) that are used for testing the sample on base (1), still be provided with a plurality of camera group (3) that are used for surveying the sample on base (1), a plurality of camera group (3) all can be around test bench (2) removal detection.
2. The monocular visual multi-perspective crack propagation monitoring device of claim 1, wherein: the camera set is characterized in that an annular groove (11) is formed in the upper surface of the base (1), a bottom support (5) is arranged below the camera set (3), the bottom support (5) slides in the annular groove (11), a mounting plate (6) is arranged above the bottom support (5), the camera set (3) can be detachably connected to the mounting plate (6) and deviates from one side of the bottom support (5), and an adjusting component (7) used for adjusting the height of the camera set (3) is further arranged between the bottom support (5) and the mounting plate (6).
3. A monocular visual multi-view crack propagation monitoring device according to claim 2, wherein: adjusting part (7) including setting up stay tube (71) on bottom support (5), adjusting pole (72), threaded connection adjusting bolt (73) on stay tube (71) upper end outer wall, setting up spacing arch (721) on adjusting pole (72) stretch into stay tube (71) inner chamber one end outer wall, spacing groove (711) have been seted up along its self axial direction on the inner wall of stay tube (71), spacing arch (721) slide in spacing groove (711), it is provided with connecting piece (8) to adjust pole (72) and stretch out between outer one end of stay tube (71) and mounting panel (6).
4. A monocular visual multi-view crack propagation monitoring device according to claim 3, wherein: stay tube (71) rotate connect in on bottom support (5), bottom support (5) are the cavity setting, the lower extreme of bottom support (5) is the intercommunication setting with the external world, the lower extreme of stay tube (71) is located the inner chamber of bottom support (5), the intracavity of bottom support (5) is provided with in bottom support (5) the in-process of sliding, orders about stay tube (71) synchronous pivoted drive assembly (9).
5. The monocular visual multi-perspective crack propagation monitoring device of claim 4, wherein: drive assembly (9) including coaxial fixed driven gear (91), the rotation connection reversing gear (92) on bottom support (5) inner chamber lateral wall, coaxial fixed reversing gear (92) pivot driving gear (93), set up ring gear (94) on base (1) on supporting tube (71) lower extreme outer wall, reversing gear (92) and driven gear (91) meshing, annular caulking groove (12) have been seted up on the upper surface of base (1), ring gear (94) are fixed in annular caulking groove (12), driving gear (93) and ring gear (94) meshing.
6. A monocular visual multi-view crack propagation monitoring device according to claim 3, wherein: connecting piece (8) are including fixing connecting pipe (81), the locking bolt (82) of threaded connection on connecting pipe (81) of mounting panel (6) back to camera group (3) one side, adjust pole (72) and stretch out the outer one end of stay tube (71) and insert the intracavity of establishing at connecting pipe (81), one end butt that locking bolt (82) stretched into connecting pipe (81) intracavity is on the outer wall of adjusting pole (72).
7. A monocular visual multi-view crack propagation monitoring device according to claim 2, wherein: mounting panel (6) are kept away from bottom support (5) one side and have been seted up spout (61), mounting panel (6) are provided with connecting plate (62) towards one side of camera group (3), be fixed with slider (63) of sliding in spout (61) on connecting plate (62), threaded connection has spacing bolt (64) on slider (63), set up waist shape hole (65) with spout (61) inner chamber intercommunication on the lateral wall of mounting panel (6), spacing bolt (64) slide in waist shape hole (65), camera group (3) fixed connection is on connecting plate (62).
8. The monocular visual multi-perspective crack propagation monitoring device of claim 1, wherein: the base (1) is the vibration isolation foundation that is round platform shape, test bench (2) are fatigue testing machine, test bench (2) are located the central point of base (1) and put.
CN202111290854.4A 2021-11-02 2021-11-02 Monocular vision multi-view crack propagation monitoring device Pending CN114088515A (en)

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CN202111290854.4A CN114088515A (en) 2021-11-02 2021-11-02 Monocular vision multi-view crack propagation monitoring device

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Cited By (1)

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