CN204789113U - Edge of a knife stop device and have its extensometer for extensometer - Google Patents
Edge of a knife stop device and have its extensometer for extensometer Download PDFInfo
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- CN204789113U CN204789113U CN201520307704.3U CN201520307704U CN204789113U CN 204789113 U CN204789113 U CN 204789113U CN 201520307704 U CN201520307704 U CN 201520307704U CN 204789113 U CN204789113 U CN 204789113U
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- 239000000463 material Substances 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
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Abstract
The utility model discloses an edge of a knife stop device and have its extensometer for extensometer. The extensometer includes that the first extensometer edge of a knife and the second extensometer edge of a knife support a face that leans on the testpieces to form the measurement moving direction of extensometer, edge of a knife stop device includes for the extensometer: first spacing recess has on the stop device, the spacing recess of second has on the 2nd stop device, first spacing recess is used for supplying the testpieces simultaneously to leaning on with the spacing recess of second to make the atress direction of testpieces when experimental and the first extensometer edge of a knife and the effect of the second extensometer edge of a knife in this power down formation measurement moving direction unanimously. The utility model provides a requirement that the atress direction is unanimous of the direction of measurement and the testpieces of extensometer is satisfied in the installation that edge of a knife stop device can guarantee the extensometer for the extensometer, not standard operation when effectively avoiding operating personnel installation extensometer, and artificial measurement and installation error when reducing the extensometer and using realize pinpointing of extensometer.
Description
Technical Field
The utility model relates to a material capability test's experimental technical field especially relates to an extensometer is with edge of a knife stop device and have its extensometer.
Background
Extensometers are the most commonly used deformation measuring devices in tensile tests of mechanical properties of metals or composite materials. When the extensometer is used for measuring the deformation of a test piece along the stress direction, the measurement moving direction 5 'of the extensometer shown in figure 1 is required, namely the connecting line direction of the middle points of the first extensometer edge 1' and the second extensometer edge 2 'in the extensometer is required to be consistent with the stress direction of the test piece 3'. However, due to the irregular installation of the extensometer, the measuring direction 5 ' of the extensometer shown in fig. 2 is inconsistent with the force-bearing direction 4 ' of the test piece, so that the deformation measured by the extensometer has a certain deviation from the actual deformation of the test piece 3 '. The deviation is the most important artificial measurement error in the extensometer measurement process.
When these extensometers are used to measure the deformation of the test piece 3 'under the action of an axial tensile load, a tester needs to ensure that the installation of the extensometer meets the requirement that the measuring direction 5' of the extensometer is consistent with the stress direction 4 'of the test piece by means of dimensional measurement (i.e. whether the distances from the first extensometer edge 1' and the second extensometer edge 2 'in the extensometer to the side edge of the test piece 3' are equal or not). When carrying out high temperature or low temperature tensile test in the environment case, because environment case inner space is narrow and small, testing personnel can't carry out dimensional measurement usually, can only roughly inspect the installation of extensometer through the mode of eyeballing whether satisfy the measurement direction 5 ' of extensometer and the unanimous requirement of the atress direction 4 ' of testpieces, cause the artificial measurement error of extensometer great.
Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an edge of a knife stop device for extensometer overcomes or alleviates at least one above-mentioned defect of prior art at least.
In order to achieve the purpose, the utility model provides a knife edge limiting device for an extensometer. The extensometer includes the extensometer main part, by the extensometer main part extend, be separated by and parallel first extensometer edge of a knife support and second extensometer edge of a knife support, and set up first extensometer edge on the first extensometer edge of a knife support, set up second extensometer edge on the second extensometer edge of a knife support, first extensometer edge with the second extensometer edge of a knife supports a face that leans on the test piece, and follow during the test piece atress the test piece removes, forms the measurement moving direction of extensometer, the edge of a knife stop device for the extensometer includes: the first limiting device is arranged on the first extensometer knife edge bracket and is provided with a first limiting groove; the second limiting device is arranged on the second extensometer knife edge bracket and is provided with a second limiting groove; the first limiting groove and the second limiting groove are used for enabling the test piece to be abutted, and the stress direction of the test piece abutted against the first limiting groove and the second limiting groove simultaneously in the test is consistent with the measuring moving direction formed by the first extensometer knife edge and the second extensometer knife edge under the action of force.
Preferably, the first limiting device and the second limiting device are the same limiting device.
Preferably, the first limiting device comprises a first limiting piece, the first limiting piece comprises a first limiting strip and a second limiting strip which are perpendicular to each other and arranged on the same plane, and an included angle formed by the first limiting strip and the second limiting strip and adjacent to the test piece is the first limiting groove; the second limiting device comprises a second limiting part, the second limiting part comprises a third limiting strip and a fourth limiting strip which are perpendicular to each other and arranged on the same plane, and an included angle formed by the third limiting strip and the fourth limiting strip and adjacent to the test piece is the second limiting groove.
Preferably, the first limiting device further comprises a first limiting base, the first limiting base is fixed to the first extensometer knife-edge support, and the first limiting member is arranged on the first limiting base;
the second limiting device further comprises a second limiting base which is fixed to the second extensometer knife-edge support, and the second limiting piece is arranged on the second limiting base, wherein the first limiting piece can move relative to the first limiting base and can be fixed to the first limiting base; the second limiting member can move relative to the second limiting base and can be fixed to the second limiting base.
Preferably, the first limiting base comprises a first base subsection and a second base subsection which are perpendicular to each other, and a first mounting hole is formed in the first base subsection; the second base subsection is sleeved on the first extensometer knife edge support, a second mounting hole is formed in the second base subsection, and a first screw is matched with the second mounting hole to screw the first limiting base to the first extensometer knife edge support; the second limiting base comprises a third base subsection and a fourth base subsection which are perpendicular to each other, and a third mounting hole is formed in the third base subsection; the fourth base subsection is sleeved on the second extensometer knife edge support, a fourth mounting hole is formed in the fourth base subsection, and a second screw is matched with the fourth mounting hole to screw the second limiting base to the second extensometer knife edge support.
Preferably, the cross-sectional shape of the second seat subsection in the first limiting seat is a U-shape; the cross-sectional shape of the fourth base subsection in the second limiting base is U-shaped.
Preferably, a first sliding groove is formed in the first limiting strip of the first limiting member, and a third screw can pass through the first sliding groove and the first mounting hole in the first limiting base, so that the first limiting strip can slide along the extending direction of the first sliding groove and fix the first limiting member to the first limiting base at any position in the first sliding groove; a second sliding groove is formed in the third limiting strip in the second limiting part, and a fourth screw can penetrate through the second sliding groove and the third mounting hole in the second limiting base, so that the second limiting strip can slide along the extending direction of the second sliding groove and fix the second limiting part to the second limiting base at any position in the second sliding groove.
Preferably, the extending direction of the first sliding groove extends from one end of the first limiting strip to the other end; the extending direction of the second sliding groove extends from one end of the second limiting strip to the other end of the second limiting strip.
The utility model also provides an extensometer, the extensometer includes extensometer main part, first extensometer edge of a knife support, second extensometer edge of a knife support, first extensometer edge of a knife and second extensometer edge of a knife, still includes as above edge of a knife stop device for the extensometer.
The utility model provides an edge of a knife stop device for extensometer can guarantee that the installation of extensometer satisfies the measurement direction of extensometer and the unanimous requirement of the atress direction of test piece, effectively avoids the non-standard operation of operating personnel installation extensometer, reduces artificial measurement and installation error when the extensometer uses, realizes the accurate positioning of extensometer.
Drawings
FIG. 1 is a schematic view of a prior art extensometer measurement.
Fig. 2 is a schematic illustration of the extensometer shown in fig. 1 installed without standardization.
Fig. 3 is a schematic view showing an installation state of the knife edge stopper for an extensometer according to the first embodiment of the present invention.
Fig. 4 is a perspective exploded view schematically showing an installation state of the knife edge stopper for an extensometer shown in fig. 3.
Fig. 5 is a schematic view of a first limit stop in the knife edge stop device for an extensometer shown in fig. 3.
Fig. 6 is a schematic view of a first limit seat in the knife edge limiting device for an extensometer shown in fig. 3.
Reference numerals:
| 1’ | first extensometer edge | 911 | First limit strip |
| 2’ | Second extensometer edge | 9111 | First chute |
| 3’ | Test piece | 912 | Second limit strip |
| 4’ | Stress direction of test piece | 913 | First limit groove |
| 5’ | Measuring direction of extensometer | 92 | First limit base |
| 1 | Extensometer main body | 921 | First base subsection |
| 2 | First extensometer knife edge support | 9211 | First mounting hole |
| 3 | Second extensometer knife edge support | 922 | Second base subsection |
| 4 | First extensometer edge | 9221 | Second mounting hole |
| 5 | Second extensometerKnife edge | 10 | Second limiting device |
| 6 | Test piece | 101 | Second position limiting part |
| 7 | Direction of force application | 102 | Second limit base |
| 8 | Measuring direction of movement of extensometer | 11 | First screw |
| 9 | First limiting device | 12 | Second screw |
| 91 | First position limiting part | 13 | Third screw |
Detailed Description
In order to make the purpose, technical solution and advantages of the present invention clearer, the following will combine the drawings in the embodiments of the present invention to perform more detailed description on the technical solution in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the invention.
Fig. 3 is a schematic view showing an installation state of the knife edge stopper for an extensometer according to the first embodiment of the present invention. Fig. 4 is a perspective exploded view schematically showing an installation state of the knife edge stopper for an extensometer shown in fig. 3. Fig. 5 is a schematic view of a first limit stop in the knife edge stop device for an extensometer shown in fig. 3. Fig. 6 is a schematic view of a first limit seat in the knife edge limiting device for an extensometer shown in fig. 3.
The utility model provides a knife edge limiting device for extensometer includes first stop device 9 and second stop device 10. The first limiting device 9 is composed of a first limiting member 91 and a first limiting base 92. The second limiting device 10 is composed of a second limiting member 101 and a second limiting base 102.
The utility model also provides an extensometer, the extensometer includes extensometer main part 1, first extensometer edge of a knife support 2, second extensometer edge of a knife support 3, first extensometer edge of a knife 4 and second extensometer edge of a knife 5. The first extensometer blade holder 2 and the second extensometer blade holder 3 shown in fig. 3 extend from the extensometer body 1, are spaced apart and are arranged in parallel. The first extensometer knife edge 4 is arranged on the first extensometer knife edge bracket 2, and the second extensometer knife edge 5 is arranged on the second extensometer knife edge bracket 3. The first extensometer edge 4 and the second extensometer edge 5 abut against one face of the test piece 6 (i.e. the front end face of the test piece 6 shown in fig. 3) and move along with the test piece 6 when the test piece 6 is stressed, forming a measuring moving direction 8 of the extensometer. The test piece 6 in this embodiment is subjected to tensile force in the longitudinal direction, and the first extensometer edge 4 and the second extensometer edge 5 move in the longitudinal direction along with the test piece 6. It is to be noted that the extensometer measurement movement direction 8 refers to the direction of the line connecting the midpoints of the first extensometer edge 4 and the second extensometer edge 5. The extensometer also comprises the knife edge limiting device for the extensometer.
Referring to fig. 3 and 5, a first stop means 9 is provided on the first extensometer edge holder 2. The first limiting device 9 has a first limiting groove 913 thereon. The second limiting device 10 is arranged on the second extensometer knife-edge support 3. The second limiting device 10 is provided with a second limiting groove. Wherein, first spacing recess 913 and second spacing recess are used for supplying test piece 6 to support and lean on to make the atress direction 7 that supports simultaneously test piece 6 who supports first spacing recess 913 and second spacing recess when experimental unanimous with the measurement moving direction 8 that first extensometer edge of a knife 4 and second extensometer edge of a knife 5 formed under the effect of this force.
It is to be noted that the first stop means 9 and the second stop means 10 are identical stop means. That is, the first position-limiting device 9 and the second position-limiting device 10 are identical in terms of size, material, composition, etc., so that the processing and manufacturing are simple and convenient, and the functions and the achieved effects are consistent. It is further noted that the first stop means 9 and the second stop means 10 are arranged opposite to each other for the convenience of installation and measurement.
Specifically, referring to fig. 4, the first limiting member 91 of the first limiting device 9 includes a first limiting strip 911 and a second limiting strip 912, and the first limiting strip 911 and the second limiting strip 912 are perpendicular to each other and are disposed on the same plane. The included angle formed by the first and second spacing bars 911 and 912 adjacent to the test piece 6 is the first spacing groove 913, i.e., the angle formed by the inner side surfaces of the first and second spacing bars 911 and 912 shown in fig. 5. It should be noted that the plane of the first stop strip 911 and the second stop strip 912 is perpendicular to the plane of the test piece 6. The medial surface of first spacing strip 911 corresponds the left end face of test piece 6, and the medial surface of first spacing strip 911 is on a parallel with the left end face of test piece 6. The inner side surface of the second limiting strip 912 corresponds to the front end surface of the test piece 6, and the inner side surface of the second limiting strip 912 is parallel to the front end surface of the test piece 6. Therefore, the first limiting device 9 arranged on the first extensometer knife edge bracket 2 can accurately position the first extensometer knife edge 4 simultaneously arranged on the first extensometer knife edge bracket 2, thereby limiting the position of the first extensometer knife edge 4 and keeping the first extensometer knife edge 4 horizontal without inclination.
The second limiting member 101 in the second limiting device 10 includes a third limiting strip and a fourth limiting strip, and the third limiting strip and the fourth limiting strip are perpendicular to each other and are disposed on the same plane. The included angle formed by the third limiting strip and the fourth limiting strip and adjacent to the test piece 6 is a second limiting groove, namely the angle formed by the inner side surfaces of the third limiting strip and the fourth limiting strip. It should be noted that the plane of the third and fourth position-limiting strips is perpendicular to the plane of the test piece 6. The medial surface of third spacing strip corresponds the left end face of test piece 6, and the medial surface of third spacing strip is on a parallel with the left end face of test piece 6. The inner side surface of the fourth limiting strip corresponds to the front end surface of the test piece 6, and the inner side surface of the fourth limiting strip is parallel to the front end surface of the test piece 6. Therefore, the second limiting device 10 arranged on the second extensometer knife edge bracket 3 can accurately position the second extensometer knife edge 5 simultaneously arranged on the second extensometer knife edge bracket 3, thereby limiting the position of the second extensometer knife edge bracket 3, keeping the second extensometer knife edge 5 horizontal without inclination and ensuring that the distances from the first extensometer knife edge 4 and the second extensometer knife edge 5 to the side edge of the test piece 6 are equal. The mutual matching of the first limiting groove 913 in the first limiting part 91 and the second limiting groove in the second limiting part 101 can ensure that the installation of the first extensometer knife edge 4 and the second extensometer knife edge 5 meets the requirement that the measurement displacement direction of the extensometer is consistent with the stress direction of the test piece 6, the nonstandard operation of the installation of the extensometer by operators is effectively avoided, the artificial measurement and installation errors during the use of the extensometer are reduced, the accurate positioning of the extensometer is realized, and the workload of the installation of the extensometer by the testers is reduced.
A first limit base 92 in the first limit device 9 is fixed to the first extensometer blade holder 2, and a first limit piece 91 is disposed on the first limit base 92. And the first limiting member 91 can move relative to the first limiting base 92 and can be fixed to the first limiting base 92, so that the first limiting device 9 can be adjusted according to the width of the front end face of the test piece 6 and is fixed in the adjusting process.
Specifically, the first limit stop 92 includes a first stop sub-section 921 and a second stop sub-section 922. The first base sub-section 921 and the second base sub-section 922 are disposed perpendicular to each other. The first base sub-section 921 has a first mounting hole 9211. The second base subsection 922 is sleeved on the first extensometer knife-edge support 2, a second mounting hole 9221 is formed in the second base subsection 922, and the first limiting base 92 is screwed to the first extensometer knife-edge support 2 through the cooperation of the first screw 11 and the second mounting hole 9221.
It should be noted that the cross-sectional shape of the second seat sub-section 922 of the first limiting seat 92 is generally U-shaped and has no circular arc transition, which is convenient to machine and cost-effective. Meanwhile, the requirement that the second base subsection 922 is directly sleeved on the first extensometer knife edge support 2 without processing a mounting hole on the first extensometer knife edge support 2 can be met, and the strength of the first extensometer knife edge support 2 is guaranteed.
A second limiting base 102 in the second limiting device 10 is fixed to the second extensometer blade holder 3, and a second limiting member 101 is disposed on the second limiting base 102. And the second limiting member 101 can move relative to the second limiting base 102 and can be fixed to the second limiting base 102, so that the second limiting device 10 can also be adjusted according to the width of the front end face of the test piece 6 and is fixed in the adjusting process.
Specifically, the second limiting base 102 includes a third base sub-section and a fourth base sub-section, which are arranged perpendicular to each other. And a third mounting hole is formed in the third base subsection. The fourth base subsection is sleeved on the second extensometer knife-edge support 3, a fourth mounting hole is formed in the fourth base subsection, and a second screw 12 is matched with the fourth mounting hole to screw the second limiting base 102 to the second extensometer knife-edge support 3.
It should be noted that the cross-sectional shape of the fourth base sub-section in the second limiting base 102 is generally U-shaped, and there is no arc transition, and this shape is convenient to machine and saves cost. Meanwhile, the requirements that the fourth base section is directly sleeved on the second extensometer knife edge support 3 without processing a mounting hole on the second extensometer knife edge support 3 and the strength of the second extensometer knife edge support 3 is ensured can be met.
Referring to fig. 3 and 6, a first sliding groove 9111 is disposed on the first limiting strip 911 of the first limiting member 91. The third screw 13 can pass through the first sliding groove 9111 and the first mounting hole 9211 arranged on the first limiting base 92, so that the first limiting strip 911 can slide along the extending direction of the first sliding groove 9111, and the first limiting member 91 is fixedly screwed to the first limiting base 92 at any position in the first sliding groove 9111.
A second sliding groove is formed in a third limiting strip of the second limiting member 101, and a fourth screw can pass through the second sliding groove and a third mounting hole in the second limiting base 102, so that the second limiting strip 912 can slide along the extending direction of the second sliding groove, and the second limiting member 101 is fixed to the second limiting base 102 at any position in the second sliding groove.
It should be noted that the extending direction of the first sliding groove 9111 is from one end of the first stopper 911 (i.e., the left end or the right end of the first stopper 911 shown in fig. 5) to the direction of the other end of the first stopper 911, so that the first stopper 911 can slide in the direction parallel to the width direction of the front end surface of the test piece 6. It should be noted that the extending direction of the second sliding groove is from one end of the second limiting bar 912 to the other end. So that the second stopper 912 can slide in a direction parallel to the width direction of the front end surface of the test piece 6. When the test piece 6 with the same width is subjected to deformation measurement, the knife edge limiting device for the extensometer is not required to be adjusted when other test pieces 6 are measured except the first test piece, so that the test piece is ready to use after being assembled, is convenient and quick, and greatly improves the working efficiency.
The mounting steps and the test process of the knife edge limiting device for the extensometer are specifically shown as follows.
Before the deformation test of the test piece 6 under the axial tensile load is carried out by using the extensometer, the two third screws 13 on the first limiting device 9 are firstly loosened, and the position of the first limiting piece 91 is adjusted according to the width of the test piece 6. After the position of the first limiting member 91 is adjusted, the two third screws 13 are screwed tightly, and the first limiting member 91 is fixed on the first limiting base 92. The first limit base 92 is sleeved on the first extensometer knife-edge support 2, and the two second screws 12 on the side surface are screwed tightly so that the first limit base 92 is fixed on the first extensometer knife-edge support 2. The same procedure can be followed for mounting the second stop means 10.
After the first limiting device 9 and the second limiting device 10 are installed, tests can be carried out according to the normal experimental steps of the extensometer. During testing, two adjacent sides of the test piece 6 only need to lean against the first limiting groove 913 and the second limiting groove of the knife edge limiting device for the extensometer, so that the distances from the first extensometer knife edge 4 and the second extensometer knife edge 5 to the sides of the test piece 6 are equal. Then the test piece 6 is clamped according to the installation method of the common extensometer, so that the measuring direction of the extensometer can be ensured to be consistent with the stress direction of the test piece 6.
The utility model provides an edge of a knife stop device for extensometer can guarantee that the installation of extensometer satisfies the measurement direction of extensometer and the unanimous requirement of the atress direction of test piece, effectively avoids the non-standard operation of operating personnel installation extensometer, reduces artificial measurement and installation error when the extensometer uses, realizes the accurate positioning of extensometer.
Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (9)
1. The utility model provides a knife edge stop device for extensometer, the extensometer includes extensometer main part (1), by first extensometer edge support (2) and second extensometer edge support (3) that extend, be separated by and be parallel in extensometer main part (1), and set up first extensometer edge (4) on first extensometer edge support (2), set up and be in second extensometer edge (5) on second extensometer edge support (3), first extensometer edge (4) with second extensometer edge (5) support and lean on a face of test piece (6), and follow when test piece (6) atress test piece (6) remove, form the measurement moving direction (8) of extensometer, its characterized in that, edge stop device for extensometer includes:
the first limiting device (9) is arranged on the first extensometer knife-edge bracket (2), and a first limiting groove (913) is formed in the first limiting device (9); and
the second limiting device (10) is arranged on the second extensometer knife-edge support (3), and a second limiting groove is formed in the second limiting device (10); wherein,
the first limiting groove (913) and the second limiting groove are used for enabling the test piece (6) to abut against, and the stress direction (7) of the test piece (6) abutting against the first limiting groove (913) and the second limiting groove simultaneously in the test is consistent with the measuring moving direction formed by the first extensometer knife edge (4) and the second extensometer knife edge (5) under the action of the force.
2. The knife-edge stop for an extensometer as claimed in claim 1, characterized in that the first stop means (9) and the second stop means (10) are identical stop means.
3. The knife-edge stop for an extensometer as set forth in claim 2,
the first limiting device (9) comprises a first limiting part (91), the first limiting part (91) comprises a first limiting strip (911) and a second limiting strip (912) which are perpendicular to each other and arranged on the same plane, and an included angle formed by the first limiting strip (911) and the second limiting strip (912) and adjacent to the test piece (6) is a first limiting groove (913);
the second limiting device (10) comprises a second limiting part (101), the second limiting part (101) comprises a third limiting strip and a fourth limiting strip which are perpendicular to each other and arranged on the same plane, and an included angle formed by the third limiting strip and the fourth limiting strip and adjacent to the test piece (6) is the second limiting groove.
4. The knife-edge stop for an extensometer as set forth in claim 3,
the first limiting device (9) further comprises a first limiting base (92), the first limiting base (92) is fixed to the first extensometer blade support (2), and the first limiting piece (91) is arranged on the first limiting base (92);
the second limiting device (10) further comprises a second limiting base (102), the second limiting base (102) is fixed to the second extensometer blade holder (3), the second limiting member (101) is arranged on the second limiting base (102),
wherein the first limiting member (91) is movable relative to the first limiting base (92) and is fixable to the first limiting base (92); the second limiting member (101) can move relative to the second limiting base (102) and can be fixed to the second limiting base (102).
5. The knife-edge stop for an extensometer as set forth in claim 4,
the first limiting base (92) comprises a first base subsection (921) and a second base subsection (922) which are perpendicular to each other, and a first mounting hole (9211) is formed in the first base subsection (921); the second base subsection (922) is sleeved on the first extensometer knife edge support (2), a second mounting hole (9221) is formed in the second base subsection (922), and a first screw (11) is matched with the second mounting hole (9221) to screw the first limiting base (92) to the first extensometer knife edge support (2);
the second limiting base (102) comprises a third base subsection and a fourth base subsection which are perpendicular to each other, and a third mounting hole is formed in the third base subsection; the fourth base subsection is sleeved on the second extensometer knife-edge support (3), a fourth mounting hole is formed in the fourth base subsection, and a second screw (12) is matched with the fourth mounting hole to screw the second limiting base (102) to the second extensometer knife-edge support (3).
6. The extensometer knife-edge limiting device of claim 5 wherein the cross-sectional shape of the second base sub-section (922) in the first limiting base (92) is U-shaped; the cross-sectional shape of the fourth base subsection in the second limiting base (102) is U-shaped.
7. The knife-edge stop for an extensometer as set forth in claim 5,
a first sliding groove (9111) is formed in the first limiting strip (911) of the first limiting piece (91), and a third screw (13) can penetrate through the first sliding groove (9111) and the first mounting hole (9211) of the first limiting base (92), so that the first limiting strip (911) can slide along the extending direction of the first sliding groove (9111) and fix the first limiting piece (91) to the first limiting base (92) at any position in the first sliding groove (9111);
a second sliding groove is formed in the third limiting strip of the second limiting part (101), and a fourth screw can penetrate through the second sliding groove and the third mounting hole in the second limiting base (102), so that the second limiting strip (912) can slide along the extending direction of the second sliding groove and fix the second limiting part (101) to the second limiting base (102) at any position in the second sliding groove.
8. The knife-edge limiting device for the extensometer as claimed in claim 7, characterized in that the first sliding groove (9111) extends in a direction from one end of the first limiting strip (911) to the other end; the extending direction of the second sliding groove extends from one end of the second limiting strip (912) to the other end.
9. An extensometer, which comprises an extensometer main body (1), a first extensometer edge support (2), a second extensometer edge support (3), a first extensometer edge (4) and a second extensometer edge (5), and is characterized by further comprising the edge limiting device for an extensometer according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520307704.3U CN204789113U (en) | 2015-05-13 | 2015-05-13 | Edge of a knife stop device and have its extensometer for extensometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520307704.3U CN204789113U (en) | 2015-05-13 | 2015-05-13 | Edge of a knife stop device and have its extensometer for extensometer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352792A (en) * | 2015-12-13 | 2016-02-24 | 中国飞机强度研究所 | Single-bolt double-shear squeezing test device for laminated composite plate |
| CN107764649A (en) * | 2017-11-28 | 2018-03-06 | 郑州大学 | Tensile deformation test device and its deformation-sensor fixture in concrete sample high temperature |
| CN112710559A (en) * | 2019-10-25 | 2021-04-27 | 中国航发商用航空发动机有限责任公司 | High-temperature mechanical test device and extensometer auxiliary assembly thereof |
-
2015
- 2015-05-13 CN CN201520307704.3U patent/CN204789113U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352792A (en) * | 2015-12-13 | 2016-02-24 | 中国飞机强度研究所 | Single-bolt double-shear squeezing test device for laminated composite plate |
| CN107764649A (en) * | 2017-11-28 | 2018-03-06 | 郑州大学 | Tensile deformation test device and its deformation-sensor fixture in concrete sample high temperature |
| CN107764649B (en) * | 2017-11-28 | 2024-01-30 | 郑州大学 | Tensile deformation testing device for concrete test piece at high temperature and deformation sensor clamp thereof |
| CN112710559A (en) * | 2019-10-25 | 2021-04-27 | 中国航发商用航空发动机有限责任公司 | High-temperature mechanical test device and extensometer auxiliary assembly thereof |
| CN112710559B (en) * | 2019-10-25 | 2022-06-24 | 中国航发商用航空发动机有限责任公司 | High-temperature mechanical test device and extensometer auxiliary assembly thereof |
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