CN112881210B - Fatigue crack observation device and fatigue crack testing device - Google Patents
Fatigue crack observation device and fatigue crack testing device Download PDFInfo
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- CN112881210B CN112881210B CN202110064479.5A CN202110064479A CN112881210B CN 112881210 B CN112881210 B CN 112881210B CN 202110064479 A CN202110064479 A CN 202110064479A CN 112881210 B CN112881210 B CN 112881210B
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- 238000012360 testing method Methods 0.000 title claims abstract description 23
- 230000003014 reinforcing effect Effects 0.000 claims description 22
- 238000009661 fatigue test Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000001965 increasing effect Effects 0.000 description 9
- 230000003028 elevating effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 4
- 206010047513 Vision blurred Diseases 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/10—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting holders for tool or work
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
-
- 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
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present disclosure relates to a fatigue crack observation apparatus and test device, comprising: the bracket comprises a base and a supporting piece, wherein the base is connected with one end of the supporting piece; a mobile device, comprising: the first moving platform is connected with the other end of the supporting piece, and a first sliding rail set extending along a first direction is arranged on one side, away from the supporting piece, of the first moving platform; the second moving platform is positioned at one side of the first sliding rail set, which is far away from the supporting piece, and can slide on the first sliding rail set, and one side of the second moving platform, which is far away from the supporting piece, is provided with a second sliding rail set extending along a second direction; the third moving platform is positioned at one side of the second sliding rail set, which is far away from the supporting piece, and can slide on the second sliding rail set; the observation mirror is arranged on one side, far away from the supporting piece, of the third movable platform; wherein the first direction and the second direction intersect. The fatigue crack observation device can conveniently and accurately adjust the position of the observation mirror.
Description
Technical Field
The disclosure relates to the technical field of mechanical property testing, in particular to fatigue crack observation equipment and a fatigue crack testing device.
Background
At present, in the technical field of mechanical property test, a microscope observation method is generally adopted to observe fatigue cracks of a test piece. However, the field of view is inversely proportional to the magnification when observed by a microscope, and about 300-500 times magnification is required when observing the length of the crack initiation stage (generally less than 100 μm), and the field of view is generally small and cannot effectively track crack growth in time. In this case, the field of view is generally adjusted by directly carrying and moving the microscope. This approach is inconvenient to operate and can cause blurring of the field of view, thereby losing data.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The present disclosure aims to provide a fatigue crack observation device and a fatigue crack testing apparatus, which can adjust the position of an observation mirror conveniently and accurately.
The present disclosure provides a fatigue crack observation apparatus, comprising:
the bracket comprises a base and a supporting piece, wherein the base is connected with one end of the supporting piece;
A mobile device, comprising: the first moving platform is connected with the other end of the supporting piece, and a first sliding rail set extending along a first direction is arranged on one side, away from the supporting piece, of the first moving platform; the second moving platform is positioned on one side of the first sliding rail set, which is far away from the supporting piece, and can slide on the first sliding rail set, and a second sliding rail set extending along a second direction is arranged on one side of the second moving platform, which is far away from the supporting piece; the third moving platform is positioned on one side, far away from the supporting piece, of the second sliding rail set, and can slide on the second sliding rail set;
An observation mirror mounted on a side of the third moving platform away from the support;
wherein the first direction and the second direction intersect.
In an exemplary embodiment of the present disclosure, the mobile device further includes:
the first scale comprises a first chute and a first sliding piece, wherein the first chute is arranged on the first moving platform, an opening of the first chute faces the second moving platform, one end of the first sliding piece is positioned in the first chute, and one side, close to the supporting piece, of the second moving platform is connected with the other end of the first sliding piece.
In an exemplary embodiment of the present disclosure, the mobile device further includes:
The second scale comprises a second chute and a second sliding piece, the second chute is arranged on the second moving platform, an opening of the second chute faces the third moving platform, one end of the second sliding piece is located in the second chute, and one side, close to the supporting piece, of the third moving platform is connected with the other end of the second sliding piece.
In an exemplary embodiment of the present disclosure, the mobile device further includes:
the first adjusting mechanism comprises a first fixed block, a second fixed block, a first moving block and a first threaded rod, wherein the first fixed block and the second fixed block are fixedly arranged on two sides of the first moving platform along a first direction, one end of the first threaded rod penetrates through the first fixed block and is rotationally connected with the second fixed block, the first moving block is meshed with the first threaded rod, is connected with one side, close to the first moving platform, of the second moving platform, and is positioned between the first fixed block and the second fixed block;
The second adjusting mechanism comprises a third fixed block, a fourth fixed block, a second moving block and a second threaded rod, wherein the third fixed block and the fourth fixed block are fixedly installed on two sides of the second moving platform along a second direction, one end of the second threaded rod penetrates through the third fixed block and is rotationally connected with the fourth fixed block, the second moving block is meshed with the second threaded rod, and is connected with one side, close to the second moving platform, of the third moving platform, and the second moving block is located between the third fixed block and the fourth fixed block.
In an exemplary embodiment of the present disclosure, the first sliding rail set has two first sliding rails, the two first sliding rails are arranged at intervals along the second direction, the first scale and the first adjusting mechanism are located between the two first sliding rails, and the moving device further includes:
And each first sliding rail is provided with at least one first sliding block, the first sliding blocks can slide along a first direction on the first sliding rail, and one sides, far away from the supporting piece, of the first sliding blocks, of the first moving blocks and the first sliding pieces are positioned on the same horizontal plane.
In an exemplary embodiment of the present disclosure, the second sliding rail set has two second sliding rails, the two second sliding rails are arranged at intervals along the first direction, the second scale and the second adjusting mechanism are located between the two second sliding rails, and the moving device further includes:
And each second sliding block is respectively provided with at least one second sliding block, the second sliding blocks can slide on the second sliding rails along a second direction, and one sides, far away from the supporting piece, of the second sliding blocks, the second moving blocks and the second sliding pieces are positioned on the same horizontal plane.
In one exemplary embodiment of the present disclosure, the support includes:
the fixing rod is connected with the base at one end, a fixing hole is formed in the side face of the fixing rod, a containing cavity is formed in the fixing rod, and an opening is formed in one end, far away from the base, of the fixing rod;
The lifting rod is connected with the first moving platform at one end, the other end of the lifting rod penetrates through the opening and is positioned in the accommodating cavity, a groove is formed in the outer surface of the lifting rod, the groove is arranged on the same side as the fixing hole, and the groove extends along the moving direction of the lifting rod;
The fixing assembly comprises a threaded rod and a handle, and one end of the threaded rod can pass through the fixing hole and is abutted in the groove; the handle is provided with a mounting hole, and the other end of the threaded rod is fixed in the mounting hole.
In an exemplary embodiment of the present disclosure, the bracket further includes:
The one end of at least two diagonal bracing bars with the lifter is connected, the other end with first moving platform is close to one side of lifter is connected, at least two diagonal bracing bars are followed the outer peripheral face evenly distributed of lifter.
In an exemplary embodiment of the present disclosure, the base includes:
the first support rod and the second support rod are arranged at intervals, and extend along the same direction;
One end of the connecting rod is connected with the first supporting rod, the other end of the connecting rod is connected with the second supporting rod, a mounting groove is formed in the connecting rod, and one end, far away from the first moving platform, of the fixing rod is mounted in the mounting groove;
The first reinforcing rod and the second reinforcing rod are connected with one end of the connecting rod, which is close to the first supporting rod, and the other end of the first reinforcing rod is connected with the fixing rod; one end of the second reinforcing rod is connected with one end of the connecting rod, which is close to the second supporting rod, and the other end of the second reinforcing rod is connected with the fixing rod;
The at least four shock-absorbing members are located on one side, away from the first moving platform, of the first supporting rod and the second supporting rod respectively, and at least one shock-absorbing member is arranged at two ends of the first supporting rod and the second supporting rod.
Another aspect of the present disclosure provides a fatigue crack testing device, comprising:
the fatigue testing machine is used for testing fatigue cracks of the test piece;
at least one fatigue crack observation device, wherein the fatigue crack observation device is any one of the fatigue crack observation devices, the fatigue crack observation device is positioned on the observation side of the fatigue testing machine, and the observation mirror faces the fatigue testing machine.
The technical scheme provided by the disclosure can achieve the following beneficial effects:
The fatigue crack observation device provided by the present disclosure has a bracket, a moving device, and an observation mirror. The mobile device is provided with a first mobile platform, a second mobile platform and a third mobile platform. The first movable platform is connected with the supporting piece, so that the position of the observation mirror can be greatly adjusted through the whole movable support. In addition, the first sliding rail group extends along the first direction, so that the second moving platform can slide along the first direction, and the position of the observation mirror in the first direction can be finely adjusted after the whole moving platform is greatly adjusted. Further, since the second sliding rail set extends along the second direction, the third moving platform can slide along the second direction, and thus the position of the observation mirror in the second direction can be finely adjusted. Therefore, the fatigue crack observation device disclosed by the invention can be used for quickly and conveniently adjusting the position of the observation mirror. Meanwhile, the position of the observation mirror can be finely adjusted in the first direction and the second direction through the second moving platform and the third moving platform respectively, so that the position of the observation mirror is more accurate, and the problems of blurred vision and data loss are avoided.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.
FIG. 1 illustrates a schematic structural diagram of a fatigue crack observation apparatus according to an exemplary embodiment of the present disclosure;
FIG. 2 illustrates a schematic structural view of a support according to an exemplary embodiment of the present disclosure;
FIG. 3 illustrates a schematic structural view of a lifter according to an exemplary embodiment of the present disclosure;
FIG. 4 illustrates a structural schematic diagram of a securing assembly according to an exemplary embodiment of the present disclosure;
FIG. 5 illustrates an assembled schematic view of a base according to an exemplary embodiment of the present disclosure;
FIG. 6 illustrates a partial schematic structure of a fatigue crack observation apparatus according to an exemplary embodiment of the present disclosure;
FIG. 7 illustrates a schematic structural view of a diagonal brace according to an exemplary embodiment of the present disclosure;
fig. 8 illustrates a schematic structure of a fifth fixing block according to an exemplary embodiment of the present disclosure;
Fig. 9 illustrates a schematic structure of a mobile device according to an exemplary embodiment of the present disclosure;
FIG. 10 illustrates a schematic structural diagram of a first mobile platform according to an exemplary embodiment of the present disclosure;
FIG. 11 illustrates a schematic diagram of a second mobile platform according to an exemplary embodiment of the present disclosure;
FIG. 12 illustrates a schematic structural diagram of a fatigue crack observation device according to another exemplary embodiment of the present disclosure;
FIG. 13 illustrates a schematic structural diagram of fatigue crack testing equipment according to an exemplary embodiment of the present disclosure;
fig. 14 illustrates a schematic structural view of a high temperature furnace according to an exemplary embodiment of the present disclosure.
Reference numerals illustrate:
1. A bracket; 2. a mobile device; 3. an observation mirror; 4. a computer; 5. a grating scale display; 6. a stretching device; 7. a high temperature furnace; 8. a test piece; 11. a base; 12. a support; 21. a first mobile platform; 22. a first slide rail; 23. a second mobile platform; 24. a first slider; 25. a first scale; 26. a first adjustment mechanism; 27. a second slide rail; 28. a third mobile platform; 29. a second slider; 30. a second scale; 31. a second adjustment mechanism; 32. a fixing ring; 33. a pad table; 71. windowing; 111. a first support bar; 112. a second support bar; 113. a connecting rod; 114. a first reinforcing rod; 115. a second reinforcing rod; 116. a shock absorbing member; 121. a fixed rod; 122. a lifting rod; 123. a fixing assembly; 124. a diagonal support bar; 125. a fifth fixed block; 251. a first chute; 252. a first slider; 261. a first fixed block; 262. a second fixed block; 263. a first moving block; 264. a first threaded rod; 265. a first threaded knob; 301. a second chute; 302. a second slider; 311. a third fixed block; 312. a fourth fixed block; 313. a second moving block; 314. a second threaded rod; 315. a second threaded knob; 1131. a mounting groove; 1161. a three-angle brace; 1162. a foot support; 1163. a shock-proof boot; 1221. a groove; 1231. a third threaded rod; 1232. a handle; 1233. a cushion block; 1241. a first connection portion; 1251. a first connection plate; 1252. and a second connecting part.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.
Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification for convenience only, such as in terms of the orientation of the examples described in the figures. It will be appreciated that if the device of the icon is flipped upside down, the recited "up" component will become the "down" component. When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.
The terms "a," "an," "the," and "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.; the terms "first" and "second" and the like are used merely as labels, and are not intended to limit the number of their objects.
As shown in fig. 1, the present disclosure first provides a fatigue crack observation apparatus, which can quickly and conveniently adjust the position of an observation mirror 3, and make the position of the observation mirror 3 more accurate, so that the problems of blurred vision and data loss are not caused. Specifically: as shown in fig. 1 and 9, the fatigue crack observing apparatus may include a bracket 1, a moving device 2, and an observation mirror 3, wherein the moving device 2 may include a first moving platform 21, a second moving platform 23, and a third moving platform 28.
The above-mentioned stand 1 may include a base 11 and a support 12, wherein the base 11 may be connected to one end of the support 12, and the first moving platform 21 may be connected to the other end of the support 12. The support 1 is used for supporting a moving device 2 and a scope 3.
In one embodiment of the present disclosure, as shown in fig. 2, the support 12 may include: a fixing rod 121, a lifting rod 122 and a fixing assembly 123. Wherein, one end of the fixing rod 121 may be connected with the base 11, and a side surface of the fixing rod 121 may have a fixing hole for fixing the fixing device. The fixing rod 121 may have a hollow structure, that is: the inside of the fixing rod 121 may have a receiving cavity, while the end of the fixing rod 121 remote from the base 11 may have an opening, and the receiving cavity and the opening may communicate. So that the accommodating chamber can accommodate the lifting lever 122.
The cross-sectional shape of the fixing rod 121 may be rectangular, but is not limited thereto, and may be circular, triangular, etc., which are all within the scope of the present disclosure. In addition, the present disclosure does not limit the length and cross-sectional area of the fixing rod 121, and may be provided according to actual needs.
When the fixing rod 121 has a rectangular cross-sectional shape, the fixing hole may be formed at one side or opposite sides of the fixing rod 121, and the fixing hole may penetrate through a sidewall of the fixing rod 121. In one embodiment of the present disclosure, the fixing holes may be located at two opposite sides of the fixing rod 121, and it is understood that one fixing hole is provided at each of the two opposite sides of the fixing rod 121, so that one fixing assembly 123 may be provided at each of the two opposite sides of the fixing rod 121, thereby increasing the fixing force of the fixing assembly 123. Meanwhile, the centers of the two fixing holes can be positioned on the same horizontal line, so that the two fixing assemblies 123 are ensured to be positioned on the same horizontal line, and the fixing force of the fixing assemblies 123 is further increased.
In addition, the number of the fixing holes is not limited in the present disclosure, and may be other numbers, for example: the three sides of the fixing rod 121 may be provided with one fixing hole, respectively, or all sides of the fixing rod 121 may be provided with one fixing hole, etc.
Further, when the cross-sectional shape of the fixing rod 121 is circular, the fixing holes may be uniformly distributed on the outer circumferential surface of the fixing rod 121 and may penetrate the outer circumferential surface of the fixing rod 121, and it is understood that the included angle between every two adjacent fixing holes is the same, but the present invention is not limited thereto, and the fixing holes may be unevenly distributed on the outer circumferential surface of the fixing rod 121 and may be set according to actual needs.
As shown in fig. 6, one end of the lifting rod 122 may be connected to the first moving platform 21 of the moving device 2, so that the moving device 2 may be driven to move up and down by the up and down movement of the lifting rod 122. The other end of the elevating rod 122 may be located in the receiving chamber through the opening of the fixing rod 121. It should be noted that, in order to facilitate lifting the lifting rod 122, after the lifting rod 122 is located in the accommodating cavity, an end of the lifting rod 122 connected to the first moving platform 21 may be higher than an end of the fixing rod 121 away from the base 11. However, the end of the lifting rod 122 connected to the first moving platform 21 may be flush with the end of the fixing rod 121 remote from the base 11.
Further, the lifting lever 122 may be lifted manually or automatically by remote control. For example: the lifting rod 122 may be provided with an electrically controlled lifting device for remotely controlling the lifting of the lifting rod 122.
The cross-sectional area of the lifting rod 122 is smaller than that of the fixing rod 121 so that the lifting rod 122 can be located in the accommodating chamber. In addition, the cross-sectional shape of the elevating rod 122 may be the same as that of the fixing rod 121 so that the elevating rod 122 is more easily fixed, but not limited thereto, the cross-sectional shape of the elevating rod 122 may not be the same as that of the fixing rod 121, for example: the cross-sectional shape of the elevating rod 122 may be circular, the cross-sectional shape of the fixing rod 121 may be rectangular, and the cross-sectional diameter of the elevating rod 122 needs to be smaller than the shortest side length of the cross-section of the fixing rod 121.
In one embodiment of the present disclosure, as shown in fig. 3, the outer surface of the lifting rod 122 may have grooves 1221, the grooves 1221 may be disposed on the same side as the fixing holes, it is understood that the number of the grooves 1221 is the same as the fixing holes, and the positions of the grooves 1221 are the same as the fixing holes, and when the fixing rod 121 has two fixing holes, the lifting rod 122 also has two grooves 1221.
Further, each groove 1221 may extend in the moving direction of the lifter 122, for example: when the lifting lever 122 moves in the vertical direction, the extending direction of the groove 1221 may be the vertical direction.
In addition, one end of the lifting rod 122 connected to the first moving platform 21 may have a plurality of screw holes for fixing the lifting rod 122 to the first moving platform 21 by screws.
As shown in fig. 4, the above-mentioned fixing device may include a third threaded rod 1231 and a handle 1232, wherein one end of the third threaded rod 1231 can pass through the fixing hole and abut into the groove 1221. The third threaded rod 1231 may be engaged with the threads through the wall of the fixing hole to fix the fixing device. When one end of the third threaded rod 1231 abuts in the groove 1221 and the third threaded rod 1231 is fixed to the wall of the fixing hole, the lifting rod 122 can be clamped, so that the position of the lifting rod 122 can be fixed. When one end of the third threaded rod 1231 is loosened, i.e. not abutted in the groove 1221, the lifting rod 122 is in a loosened state, and the lifting rod 122 can move.
The handle 1232 may have a mounting hole, and the other end of the third threaded rod 1231 may be fixed in the mounting hole, so that the threaded rod may be screwed in or out more easily and conveniently by rotating the handle 1232.
In one embodiment of the present disclosure, the securing assembly 123 may further include a spacer 1233, the spacer 1233 having a through-hole, an inner surface of which may have threads capable of intermeshing with threads on the third threaded rod 1231. The spacer 1233 may be positioned between the handle 1232 and the fixing rod 121, and the third threaded rod 1231 may pass through the through-hole and be engaged with threads of the inner surface of the through-hole. The pad 1233 may be a square block, but is not limited thereto, and may be other shapes. By providing the spacer 1233, the portion where the third threaded rod 1231 is engaged can be increased to increase the fixing force of the third threaded rod 1231. Meanwhile, when the third threaded rod 1231 is abutted in the groove 1221, the pad 1233 may be closely abutted against the outer wall of the fixing rod 121, so that the stability of the fixing assembly 123 can be increased, while the fixing force of the third threaded rod 1231 can be further increased.
As shown in fig. 5, the base 11 may include: the first support bar 111 and the second support bar 112 may be disposed separately, and the first support bar 111 and the second support bar 112 may extend in the same direction. Further, the cross-sectional shapes of the first support bar 111 and the second support bar 112 may be rectangular, but are not limited thereto, and may be other shapes, which are within the scope of the present disclosure. In addition, in order to secure stability of the base 11, the first support bar 111 and the second support bar 112 may have the same length.
Still further, the base 11 may further include a connection rod 113, and one end of the connection rod 113 may be connected to the first support rod 111 and the other end may be connected to the second support rod 112. The first support bar 111 and the second support bar 112 are connected by the connection bar 113, so that the supporting force of the base 11 can be improved. In addition, two ends of the connecting rod 113 may be connected to the middle parts of the first connecting rod 113 and the second connecting rod 113, respectively, so that stability of the base 11 is further improved, and supporting force of the base 11 is further increased.
In one embodiment of the present disclosure, the connection rod 113 may have a mounting groove 1131 thereon, and an end of the fixing rod 121 remote from the first moving platform 21 may be mounted in the mounting groove 1131. Further, the bottom surface and the side surface of the mounting groove 1131 have screw holes, through which the fixing rod 121 can be mounted and fixed. By installing the fixing rod 121 in the installation groove 1131, the offset of the fixing rod 121 can be limited by the installation groove 1131, thereby preventing the fixing rod 121 from being offset, and improving the stability of the fixing rod 121.
In one embodiment of the present disclosure, the first support bar 111, the second support bar 112 and the connection bar 113 may be integrally manufactured, but not limited thereto, and the first support bar 111, the second support bar 112 and the connection bar 113 may be separately manufactured and then connected together by welding or the like, which is within the scope of the present disclosure.
In addition, the base 11 may further include a first reinforcing rod 114 and a second reinforcing rod 115, wherein one end of the first reinforcing rod 114 may be connected with one end of the connecting rod 113 near the first supporting rod 111, and the other end of the first reinforcing rod 114 may be connected with the fixing rod 121. One end of the second reinforcement bar 115 may be connected to one end of the connection bar 113 near the second support bar 112, and the other end of the second reinforcement bar 115 may be connected to the fixing bar 121. Further, the first reinforcing bar 114 and the second reinforcing bar 115 may be disposed obliquely, that is: the end of the first reinforcing rod 114 connected to the fixing rod 121 is higher than the end of the first reinforcing rod 114 connected to the connecting rod 113, and the end of the second reinforcing rod 115 connected to the fixing rod 121 is higher than the end of the second reinforcing rod 115 connected to the connecting rod 113.
In addition, the base 11 may further include at least four shock absorbing members 116, the at least four shock absorbing members 116 may be located at one side of the first support bar 111 and the second support bar 112 away from the first moving platform 21, respectively, and both ends of the first support bar 111 and the second support bar 112 are provided with at least one shock absorbing member 116.
In one embodiment of the present disclosure, the shock absorber 116 may include: a tri-gusset 1161, a foot support 1162, and a shock-resistant boot 1163. Wherein, the tripod 1161 may be connected with one side of the first support bar 111 and the second support bar 112 far from the first moving platform 21, the foot support 1162 may be connected with one side of the tripod 1161 far from the first support bar 111 and the second support bar 112, and the anti-skid shoe may be connected with one side of the foot support 1162 far from the tripod 1161. By providing the damper 116 in this structure, the influence of vibration in the environment on the scope 3 can be prevented.
As shown in fig. 6, the bracket 1 may further include at least two diagonal support bars 124, one end of the diagonal support bar 124 may be connected to the lifting bar 122, the other end may be connected to a side of the first moving platform 21 near the lifting bar 122, and the at least two diagonal support bars 124 may be uniformly distributed along the outer circumferential surface of the lifting bar 122. The supporting force and the stability of the support of the bracket 1 can be significantly increased by providing the diagonal support bar 124.
Further, as shown in fig. 7 and 8, both ends of the diagonal brace 124 may have first connection portions 1241, and each of the first connection portions 1241 may be provided with a through hole. The bracket 1 may further include a fifth fixing block 125, and the fifth fixing block 125 may have a first connection plate 1251 and a second connection portion 1252, the first connection plate 1251 may be connected with the second connection portion 1252, and the second connection portion 1252 may extend in a direction away from the first connection plate 1251, wherein the first connection plate 1251 has a through hole, the second connection portion 1252 has a fixing groove, and both sides of the fixing groove of the second connection portion 1252 are also provided with through holes.
Both ends of each of the diagonal braces 124 may be provided with a fifth fixing block 125. It is understood that the fifth fixing block 125 disposed at the end of the diagonal brace 124 connected to the first movable platform 21 may be connected to the first movable platform 21 through a through hole on the first connecting plate 1251, and the first connecting portion 1241 on the diagonal brace 124 may be located in the fixing groove and connected to the through hole through a screw. The fifth fixing block 125 provided at one end of the diagonal brace 124 connected with the lifting rod 122 may be connected with the lifting rod 122 through a through hole on the first connection plate 1251, and the first connection part 1241 on the diagonal brace 124 may be located in the fixing groove and connected with the through hole through a screw.
By providing the fifth fixing block 125, the contact area between the diagonal brace 124 and the first movable platform 21 and the elevating rod 122 can be increased, thereby improving the stability of the diagonal brace 124 support.
As shown in fig. 9 and 10, a side of the first moving platform 21 away from the support 12 may be provided with a first slide rail group extending in a first direction. The first sliding rail set may have two first sliding rails 22, and the two first sliding rails 22 may be arranged separately along the second direction. Through setting up two first slide rails 22, can increase the stability when second moving platform 23 slides, and then prevent that scope 3 from taking place to rock and displacement at gliding in-process to cause the positional deviation of scope 3, make the field of vision of scope 3 fuzzy, the problem of losing data.
The second moving platform 23 may be located at a side of the first sliding rail set remote from the support 12, and the second moving platform 23 is capable of sliding on the first sliding rail set.
Further, at least one first sliding block 24 is disposed on each first sliding rail 22, the first sliding block 24 may have a third sliding groove, the first sliding block 24 may be engaged on the first sliding rail 22 through the third sliding groove, and the first sliding block 24 may be capable of sliding on the first sliding rail 22. The first slider 24 may have at least one screw hole thereon, and the second moving platform 23 may be fixed to the first slider 24 through the screw hole, so that the second moving platform 23 can be moved by the movement of the first slider 24.
In one embodiment of the present disclosure, two first sliders 24 may be provided on each first slide rail 22. The interval between the two first sliders 24 is 3cm, but is not limited thereto, and the interval between the two first sliders 24 may be other distances, which is within the scope of the present disclosure. Through setting up two first sliders 24, can increase the bearing capacity and the stability of first slider 24 to make second moving platform 23 can not cause the damage to first slide rail 22 at the in-process that removes, can also improve the stationarity that second moving platform 23 removed.
Further, the mobile device 2 may further include: the first scale 25 may include a first sliding groove 251 and a first slider 252, wherein the first sliding groove 251 may be mounted on the first moving platform 21 and may be located between two first sliding rails 22, while an opening of the first sliding groove 251 may face the second moving platform 23. One end of the first slider 252 may be located in the first sliding groove 251, and one side of the second moving platform 23 adjacent to the support 12 may be connected to the other end of the first slider 252.
Further, the length of the first sliding groove 251 may be greater than or equal to the length of the first sliding rail 22, so as to ensure that the measuring range of the first scale 25 can meet the distance that the second moving platform 23 can move.
Further, the first scale 25 may be a grating scale, and the moving distance of the second moving platform 23 may be directly measured by the movement of the first slider 252, so as to accurately determine the moving position of the scope 3 in the first direction. In addition, when the first scale 25 is not a grating scale, the first sliding groove 251 may be provided with scales, and the position where the scope 3 moves may be determined by observing the scales.
In one embodiment of the present disclosure, the mobile device 2 may further include: the first adjusting mechanism 26 may include a first fixed block 261, a second fixed block 262, a first moving block 263 and a first threaded rod 264, wherein the first fixed block 261 and the second fixed block 262 may be fixedly installed at both sides of the first moving platform 21 along the first direction, and one end of the first threaded rod 264 may pass through the first fixed block 261 and be rotatably connected with the second fixed block 262. The first moving block 263 may be engaged with the first threaded rod 264, and the first moving block 263 may be located between the first fixed block 261 and the second fixed block 262.
Further, the first moving block 263 may be connected to a side of the second moving platform 23 adjacent to the first moving platform 21. The side of the first moving block 263 adjacent to the second moving platform 23 may be provided with a screw hole through which the second moving platform 23 can be coupled with the first moving block 263.
Further, at an end of the first threaded rod 264 remote from the second fixed block 262, a first screw knob 265 may be provided, through which the threaded rod 265 may be rotated. By rotating the threaded rod, the first moving block 263 can be driven to perform continuous displacement, so that the second moving platform 23 performs continuous displacement in the first direction. Meanwhile, since the first moving block 263 is continuously displaced, a minute and accurate adjustment of the position of the second moving platform 23 can be performed.
In one embodiment of the present disclosure, as shown in fig. 11, a side of the second moving platform 23 away from the support 12 may be provided with a second sliding rail set extending in a second direction, wherein the first direction may intersect the second direction. The second sliding rail set may have two second sliding rails 27, and the two second sliding rails 27 may be arranged at intervals along the first direction. By arranging the two second slide rails 27, the stability of the third moving platform 28 during sliding can be increased, and further the observation mirror 3 is prevented from shaking and displacing in the sliding process, so that the position deviation of the observation mirror 3 is caused, the field of view of the observation mirror 3 is fuzzy, and the data is lost.
The third moving platform 28 may be located on a side of the second set of sliding rails remote from the support 12, and the third moving platform 28 is capable of sliding on the second set of sliding rails.
Further, at least one second slider 29 is disposed on each second sliding rail 27, the second slider 29 may have a fourth sliding groove, the second slider 29 may be engaged on the second sliding rail 27 through the fourth sliding groove, and the second slider 29 may slide on the second sliding rail 27. The second slider 29 may have at least one screw hole thereon, and the third moving platform 28 may be fixed to the second slider 29 through the screw hole, so that the third moving platform 28 may be moved by the movement of the second slider 29.
In one embodiment of the present disclosure, two second sliders 29 may be provided on each of the second slide rails 27. The interval between the two second sliders 29 is 3cm, but is not limited thereto, and the interval between the two second sliders 29 may be other distances, which is within the scope of the present disclosure. Through setting up two second sliders 29, can increase the bearing capacity and the stability of second slider 29 to make third moving platform 28 can not cause the damage to second slide rail 27 at the in-process that removes, can also improve the stationarity that third moving platform 28 removed.
Further, the mobile device 2 may further include: the second scale 30 may include a second sliding chute 301 and a second slider 302, wherein the second sliding chute 301 may be mounted on the second moving platform 23 and may be located between the two second sliding rails 27, while the opening of the second sliding chute 301 may be directed towards the third moving platform 28. One end of the second sliding member 302 may be located in the second sliding groove 301, and a side of the third moving platform 28 near the supporting member 12 may be connected to the other end of the second sliding member 302.
Further, the length of the second sliding groove 301 may be greater than or equal to the length of the second sliding rail 27, so as to ensure that the measuring range of the second scale 30 can meet the distance that the third moving platform 28 can move.
Further, the second scale 30 may be a grating scale, and the moving distance of the third moving platform 28 may be directly measured by moving the second sliding member 302, so as to accurately determine the moving position of the scope 3 in the second direction. In addition, when the second scale 30 is not a grating scale, the second sliding groove 301 may be provided with a scale, and the position where the scope 3 moves may be determined by observing the scale.
In one embodiment of the present disclosure, the mobile device 2 may further include: the second adjusting mechanism 31 may include a third fixed block 311, a fourth fixed block 312, a second moving block 313 and a second threaded rod 314, wherein the third fixed block 311 and the fourth fixed block 312 may be fixedly installed at both sides of the second moving platform 23 along the second direction, and one end of the second threaded rod 314 may pass through the third fixed block 311 and be rotatably connected with the fourth fixed block 312. The second moving block 313 may be engaged with the second threaded rod 314, and the second moving block 313 may be located between the third fixed block 311 and the fourth fixed block 312.
Further, the second moving block 313 may be connected to a side of the third moving platform 28 adjacent to the second moving platform 23. The second moving block 313 may be provided with a screw hole at a side thereof adjacent to the third moving platform 28, and the third moving platform 28 may be connected to the second moving block 313 through the screw hole.
Further, at an end of the second threaded rod 314 remote from the fourth fixed block 312, a second threaded knob 315 may be provided, by which the threaded rod may be rotated. By rotating the threaded rod, the first moving block 263 can be driven to perform continuous displacement, so that the second moving platform 23 performs continuous displacement in the first direction. Meanwhile, since the first moving block 263 is continuously displaced, a minute and accurate adjustment of the position of the second moving platform 23 can be performed.
In one embodiment of the present disclosure, the side length of the second moving platform 23 may be smaller than the side length of the first moving platform 21, the side length of the third moving platform 28 may be smaller than the side length of the second moving platform 23, the length of the second slide rail 27 may be smaller than the length of the first slide rail 22, the length of the second scale 30 may be smaller than the length of the first scale 25, and the length of the second adjustment mechanism 31 may be smaller than the length of the first adjustment structure, for example: the side length of the second moving platform 23 may differ from the side length of the first moving platform 21 by 10cm, the side length of the third moving platform 28 may differ from the side length of the second moving platform 23 by 10cm, the length of the second sliding rail 27 may differ from the length of the first sliding rail 22 by 10cm, the length of the second scale 30 may differ from the length of the first scale 25 by 10cm, and the length of the second adjusting mechanism 31 may differ from the length of the first adjusting mechanism by 10cm, but not limited thereto, the specific values of the above-mentioned difference in length are not limited, and may be set according to actual needs, which are all within the scope of the present disclosure.
Further, the side of the first sliding rail 22 contacting the first moving platform 21 and the side of the second sliding rail 27 contacting the second moving platform 23 may be provided with a pad 33, and the side of each first sliding rail 22 contacting the first moving platform 21 and the side of each second sliding rail 27 contacting the second moving platform 23 may be provided with two pads 33, and the two pads 33 may be respectively located at two ends of the first sliding rail 22 and the second sliding rail 27 for supporting the first sliding rail 22 and the second sliding rail 27.
In addition, the first direction and the second direction may be perpendicular, so that the position of the observation mirror 3 may be adjusted in two perpendicular directions, and further, the position of the observation mirror 3 may be more conveniently adjusted.
As shown in fig. 1 and 9, the scope 3 may be mounted on a side of the third movable platform 28 remote from the support 12. The scope 3 may be a microscope, but is not limited thereto, and may be another scope 3 having an observation function.
In one embodiment of the present disclosure, the mobile device 2 may further comprise a fixing ring 32, which fixing ring 32 may be mounted on a side of the third mobile platform 28 remote from the support 12, and the scope 3 is located between the fixing ring 32 and the third mobile platform 28, such that the scope 3 is fastened to the third mobile platform 28 by the fixing ring 32.
Further, as shown in fig. 12, the fatigue crack observation apparatus may further include a computer 4, which is connectable to the observation mirror 3 through the computer 4 to receive the fatigue crack image observed by the observation mirror 3 in real time.
In addition, when the first scale 25 and the second scale 30 are grating scales, the fatigue crack observing device may further include a grating scale display 5. The grating scale display 5 may be connected to a grating scale for displaying specific values of the movements of the second and third movable stages 23 and 28 in real time, so as to record the length of the fatigue crack.
Another aspect of the present disclosure provides a fatigue crack testing device, which can quickly and conveniently adjust the position of an observation mirror 3, and make the position of the observation mirror 3 more accurate, so that the problems of blurred vision and data loss are not caused. Specifically, the fatigue crack testing device may include: a fatigue testing machine and at least one fatigue crack observing device. The fatigue crack observation device may be the fatigue crack observation device described above, and the fatigue crack observation device may be located on an observation side of the fatigue testing machine, and the observation mirror 3 may face the fatigue testing machine.
Further, as shown in fig. 13, the fatigue testing machine may have a stretching apparatus 6 and a high temperature furnace 7, wherein the high temperature furnace 7 may provide a high temperature environment for the fatigue test. As shown in fig. 14, the high temperature furnace 7 may have a hollow cavity for accommodating and holding the test piece 8, and the peripheral surface of the high temperature furnace 7 is provided with a window 71 for observing fatigue cracks of the test piece 8. The stretching apparatus 6 may have two upper and lower tie rods, which may be connected to both ends of the test piece 8, respectively, for stretching the test piece 8 in two directions at the same time.
In one embodiment of the present disclosure, as shown in fig. 14, the high temperature furnace 7 may have two fenestrations 71 disposed opposite to each other so as to simultaneously observe fatigue cracks of the test piece 8 from a plurality of angles. When the high temperature furnace 7 has two windows 71, the fatigue crack observing apparatus may have two fatigue crack observing devices, and the two fatigue crack observing devices may be located at the two windows 71 side of the high temperature furnace 7, respectively, and the two observation mirrors 3 may face the two windows 71, respectively. It should be noted that the number of the windows 71 and the fatigue crack observing devices in the present disclosure is not limited, and may be other numbers, and may be set according to actual needs, which are all within the scope of the present disclosure.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (7)
1. A fatigue crack observation apparatus, characterized by comprising:
the bracket comprises a base and a supporting piece, wherein the base is connected with one end of the supporting piece;
A mobile device, comprising: the device comprises a first moving platform, a second moving platform, a third moving platform, a first adjusting mechanism, a second adjusting mechanism, a first scale and a second scale, wherein the first moving platform is connected with the other end of the supporting piece, and a first sliding rail set extending along a first direction is arranged on one side, away from the supporting piece, of the first moving platform; the second moving platform is positioned on one side of the first sliding rail set, which is far away from the supporting piece, and can slide on the first sliding rail set, and a second sliding rail set extending along a second direction is arranged on one side of the second moving platform, which is far away from the supporting piece; the third moving platform is positioned on one side, far away from the supporting piece, of the second sliding rail set, and can slide on the second sliding rail set; the first adjusting mechanism comprises a first fixed block, a second fixed block, a first moving block and a first threaded rod, wherein the first fixed block and the second fixed block are fixedly arranged on two sides of the first moving platform along a first direction, one end of the first threaded rod penetrates through the first fixed block and is rotationally connected with the second fixed block, the first moving block is meshed with the first threaded rod, is connected with one side, close to the first moving platform, of the second moving platform, and is positioned between the first fixed block and the second fixed block; the second adjusting mechanism comprises a third fixed block, a fourth fixed block, a second moving block and a second threaded rod, wherein the third fixed block and the fourth fixed block are fixedly arranged on two sides of the second moving platform along a second direction, one end of the second threaded rod penetrates through the third fixed block and is rotationally connected with the fourth fixed block, the second moving block is meshed with the second threaded rod, is connected with one side, close to the second moving platform, of the third moving platform, and is positioned between the third fixed block and the fourth fixed block; the first scale comprises a first chute and a first sliding piece, the first chute is arranged on the first moving platform, an opening of the first chute faces the second moving platform, one end of the first sliding piece is positioned in the first chute, and one side, close to the supporting piece, of the second moving platform is connected with the other end of the first sliding piece; the second scale comprises a second chute and a second sliding piece, the second chute is arranged on the second moving platform, an opening of the second chute faces the third moving platform, one end of the second sliding piece is positioned in the second chute, and one side, close to the supporting piece, of the third moving platform is connected with the other end of the second sliding piece;
An observation mirror mounted on a side of the third moving platform away from the support;
wherein the first direction and the second direction intersect.
2. The fatigue crack observation device according to claim 1, wherein the first slide rail group has two first slide rails, the two first slide rails are arranged apart in the second direction, the first scale and the first adjustment mechanism are located between the two first slide rails, the moving apparatus further includes:
And each first sliding rail is provided with at least one first sliding block, the first sliding blocks can slide along a first direction on the first sliding rail, and one sides, far away from the supporting piece, of the first sliding blocks, of the first moving blocks and the first sliding pieces are positioned on the same horizontal plane.
3. The fatigue crack observation device according to claim 1, wherein the second slide rail group has two second slide rails, the two second slide rails being arranged apart along the first direction, the second scale and the second adjustment mechanism being located between the two second slide rails, the moving apparatus further comprising:
And each second sliding block is respectively provided with at least one second sliding block, the second sliding blocks can slide on the second sliding rails along a second direction, and one sides, far away from the supporting piece, of the second sliding blocks, the second moving blocks and the second sliding pieces are positioned on the same horizontal plane.
4. The fatigue crack observation device according to claim 1, wherein the support comprises:
the fixing rod is connected with the base at one end, a fixing hole is formed in the side face of the fixing rod, a containing cavity is formed in the fixing rod, and an opening is formed in one end, far away from the base, of the fixing rod;
The lifting rod is connected with the first moving platform at one end, the other end of the lifting rod penetrates through the opening and is positioned in the accommodating cavity, a groove is formed in the outer surface of the lifting rod, the groove is arranged on the same side as the fixing hole, and the groove extends along the moving direction of the lifting rod;
The fixing assembly comprises a threaded rod and a handle, and one end of the threaded rod can pass through the fixing hole and is abutted in the groove; the handle is provided with a mounting hole, and the other end of the threaded rod is fixed in the mounting hole.
5. The fatigue crack observation device according to claim 4, wherein the bracket further comprises:
The one end of at least two diagonal bracing bars with the lifter is connected, the other end with first moving platform is close to one side of lifter is connected, at least two diagonal bracing bars are followed the outer peripheral face evenly distributed of lifter.
6. The fatigue crack observation device according to claim 4, wherein the base comprises:
the first support rod and the second support rod are arranged at intervals, and extend along the same direction;
One end of the connecting rod is connected with the first supporting rod, the other end of the connecting rod is connected with the second supporting rod, a mounting groove is formed in the connecting rod, and one end, far away from the first moving platform, of the fixing rod is mounted in the mounting groove;
The first reinforcing rod and the second reinforcing rod are connected with one end of the connecting rod, which is close to the first supporting rod, and the other end of the first reinforcing rod is connected with the fixing rod; one end of the second reinforcing rod is connected with one end of the connecting rod, which is close to the second supporting rod, and the other end of the second reinforcing rod is connected with the fixing rod;
The at least four shock-absorbing members are located on one side, away from the first moving platform, of the first supporting rod and the second supporting rod respectively, and at least one shock-absorbing member is arranged at two ends of the first supporting rod and the second supporting rod.
7. A fatigue crack testing device, comprising:
the fatigue testing machine is used for testing fatigue cracks of the test piece;
at least one fatigue crack observation device according to any of the preceding claims 1-6, which is located on the observation side of the fatigue testing machine, the observation mirror being oriented towards the fatigue testing machine.
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| CN202110064479.5A CN112881210B (en) | 2021-01-18 | 2021-01-18 | Fatigue crack observation device and fatigue crack testing device |
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| CN113252674B (en) * | 2021-06-25 | 2021-09-21 | 山东省地质矿产勘查开发局第四地质大队(山东省第四地质矿产勘查院) | Auxiliary observation device convenient to disassemble and assemble for geological survey rock identification |
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