CN213714918U - Special centre gripping frock of glass steel embedded nut tensile test - Google Patents
Special centre gripping frock of glass steel embedded nut tensile test Download PDFInfo
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- CN213714918U CN213714918U CN202022892525.4U CN202022892525U CN213714918U CN 213714918 U CN213714918 U CN 213714918U CN 202022892525 U CN202022892525 U CN 202022892525U CN 213714918 U CN213714918 U CN 213714918U
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- clamping rod
- clamping
- tensile test
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Abstract
The utility model relates to a special centre gripping frock of glass steel embedded nut tensile test relates to embedded nut tensile test technical field, and the nut tensile test centre gripping frock of having solved among the prior art often because the nut terminal surface that is tested is not good with the straightness that hangs down of nut axis, and makes the not enough scientific accurate technical problem of test result. The technical characteristics include that the device comprises an upper clamping rod, one end of the upper clamping rod is fixedly connected with an upper chuck of a testing machine, and the lower end of the upper clamping rod is in threaded fit with a tested nut and penetrates through the tested nut; the lower clamping body is provided with a follow-up device adaptive to the end face of the tested nut, and the lower clamping body is provided with a lower clamping rod connected with the lower chuck of the testing machine. The method has the advantages that the end face of the tested nut can be stressed at any time and is adaptive to the shape of the tested nut.
Description
Technical Field
The utility model relates to a buried nut tensile test technical field in advance, in particular to special centre gripping frock of glass steel buried nut tensile test in advance.
Background
Tensile test refers to a test method for measuring material properties under an axial tensile load. The data obtained from the tensile test can be used to determine the elastic limit, elongation, elastic modulus, proportional limit, area reduction, tensile strength, yield point, yield strength and other tensile property indexes of the material.
The universal testing machine is also called a tensile machine, integrates the functions of stretching, bending, compressing, shearing and the like, and is mainly used for mechanical property tests of metal and nonmetal materials.
The nut tensile test clamping tool in the prior art is often poor in verticality between the end face of the nut to be tested and the axis of the nut, so that the test result is not scientific and accurate enough.
SUMMERY OF THE UTILITY MODEL
The utility model discloses solve the nut tensile test centre gripping frock among the prior art and often hang down straightness not good because of the nut terminal surface of being tested and nut axis, and make the not enough scientific accurate technical problem of test result, provide a special centre gripping frock of glass steel embedded nut tensile test.
In order to solve the technical problem, the technical scheme of the utility model is specifically as follows:
the utility model provides a special centre gripping frock of embedded nut tensile test of glass steel, includes:
one end of the upper clamping rod is fixedly connected with an upper chuck of the testing machine, and the lower end of the upper clamping rod is in threaded fit with the nut to be tested and penetrates through the nut to be tested;
the lower clamping body is provided with a follow-up device adaptive to the end face of the tested nut, and the lower clamping body is provided with a lower clamping rod connected with the lower chuck of the testing machine.
Further, the lower clamping body comprises:
the clamping cylinder comprises a placing cavity for placing the tested nut, a first through hole with the diameter larger than that of the upper clamping rod and smaller than that of the tested nut is arranged at the top end of the clamping cylinder, a follow-up device is arranged at the bottom of the first through hole, and the surface of the tested nut is attached to the follow-up device;
the one end of lower supporting stick, lower supporting stick and the lower chuck fixed connection of testing machine, the one end of lower supporting stick has set firmly the mounting panel, the bottom fixed connection of mounting panel and a centre gripping section of thick bamboo.
Further, the follow-up device comprises:
the spherical concave surface is arranged below the first through hole;
the bottom surface of the follow-up plate is attached to the end face of the tested nut, the upper surface of the follow-up plate is a spherical convex surface matched with the spherical concave surface, and a second through hole with the diameter equal to that of the first through hole is formed in the follow-up plate.
Furthermore, the circumference side of the clamping cylinder is also provided with an observation port for observing the test condition of the tested nut, and the observation port is embedded with an observation window.
Furthermore, the joint of the lower clamping rod and the mounting plate is in smooth transition.
The utility model discloses following beneficial effect has:
the utility model discloses a special centre gripping frock of pre-buried nut tensile test of glass steel, through setting up holding body and servo device down, when last chuck was through last holding rod pulling by test nut, the nut terminal surface of being tested can laminate with servo device constantly, and provide pressure to the nut of being tested, guarantee to test out the pulling force that can bear by the screw thread of test nut, even the axis of the nut of being tested is out of plumb with the terminal surface, the terminal surface that also can make the nut of being tested through servo device can receive pressure constantly, and the adaptation is by test nut's shape.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the utility model discloses a special centre gripping frock of glass steel embedded nut tensile test's schematic structure.
The reference numerals in the figures denote:
1. an upper clamping rod; 2. a lower clamping body; 201. a first through hole; 202. a clamping cylinder; 203. a follower plate; 204. mounting a plate; 205. a lower clamping rod; 206. an observation window; 207. a second through hole; 3. and a nut.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, a clamping tool special for a tensile test of a glass fiber reinforced plastic embedded nut includes:
one end of the upper clamping rod 1 is fixedly connected with an upper chuck of the testing machine, and the lower end of the upper clamping rod 1 is in threaded fit with the nut 3 to be tested and penetrates through the nut 3 to be tested;
the lower clamping body 2 is provided with a follow-up device adapted to the end face of the tested nut 3, and the lower clamping body 2 is provided with a lower clamping rod 205 connected with a lower chuck of the testing machine.
The working principle is as follows: through setting up holding body 2 and servo device down, when going up the chuck and carrying 1 pulling of holding stick and being tested nut 3, the nut 3 terminal surface of being tested can laminate with servo device constantly, and to the nut 3 pressure of being tested, guarantee to test the pulling force that can bear by the screw thread of being tested nut 3, even if the axis of the nut 3 of being tested is out of plumb with the terminal surface like this, also can make the terminal surface of the nut 3 of being tested receive pressure constantly through servo device, and adapt to the shape of being tested the nut, solve nut tensile test centre gripping frock among the prior art often because the nut terminal surface of being tested is not good with the straightness that hangs down of nut axis, and make the technical problem that the test result is accurate enough scientifically, the effect that has the test result more scientific and reasonable.
The lower grip body 2 includes:
the clamping device comprises a clamping cylinder 202, the clamping cylinder 202 comprises a placing cavity for placing a tested nut 3, a first through hole 201 with the diameter larger than that of an upper clamping rod 1 and smaller than that of the tested nut 3 is formed in the top end of the clamping cylinder 202, a follow-up device is arranged at the bottom of the first through hole 201, and the surface of the tested nut 3 is attached to the follow-up device;
and one end of the lower clamping rod 205 is fixedly connected with the lower chuck of the testing machine, one end of the lower clamping rod 205 is fixedly provided with a mounting plate 204, and the mounting plate 204 is fixedly connected with the bottom end of the clamping cylinder 202.
The servo device comprises:
a spherical concave surface disposed below the first through hole 201;
the bottom surface of the follow-up plate 203 is attached to the end surface of the tested nut 3, the upper surface of the follow-up plate 203 is a spherical convex surface matched with the spherical concave surface, and the follow-up plate 203 is provided with a second through hole 207 with the diameter equal to that of the first through hole 201.
Specifically, one end of the upper clamping rod 1 is in threaded fit with the nut 3, the depth of the upper clamping rod 1 screwed into the threads is larger than the thickness of the nut 3, namely the upper clamping rod 1 needs to penetrate through the nut 3, then the upper clamping rod 1 penetrates through the follower plate 203 along the second through hole 207, the bottom surface plane of the follower plate 203 is attached to the end surface of the nut 3, the spherical convex surface of the follower plate 203 is attached to the spherical concave surface below the first through hole 201, so that the upper end of the upper clamping rod 1 extends out of the clamping cylinder 202 and is fixedly connected with the upper chuck of the testing machine, then the mounting plate 204 is fixedly mounted, the lower clamping rod 205 is fixedly connected with the lower chuck of the testing machine, when the upper chuck pulls the upper clamping rod 1 to move upwards or the lower chuck pulls the lower clamping rod 205 to move downwards, as the spherical convex surface can swing in the spherical concave surface, the bottom surface of the follower plate 203 applies pressure to the end surface of the nut 3, and better adapts to the non, the shearing force generated due to non-perpendicularity is avoided, so that the tensile force born by the thread of the nut 3 can be detected, and the detection result is more scientific and reasonable; the top of a clamping cylinder 202 is provided with a first through hole 201, the diameter of which is larger than that of the upper clamping rod 1 and smaller than that of the tested nut 3, so that the upper clamping rod 1 can smoothly pass through the first through hole, normal force can be applied to the end face of the nut 3, and the accuracy of a test result is guaranteed.
The clamping cylinder 202 is also provided with an observation port at the circumference for observing the test condition of the tested nut 3, and an observation window 206 is embedded at the observation port.
Specifically, the observation window 206 can protect field workers from security threats, and the test condition that the workers observe the nut 3 is not delayed.
The joint of the lower holding rod 205 and the mounting plate 204 is in a smooth transition.
Specifically, if the lower clamping rod 205 and the mounting plate 204 are not in smooth transition, stress concentration occurs, so that the service life of the lower clamping rod 205 is greatly shortened, and after smooth transition, stress concentration can be avoided, thereby ensuring the normal service life of the lower clamping rod 205.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (5)
1. The utility model provides a special centre gripping frock of embedded nut tensile test of glass steel, its characterized in that includes:
one end of the upper clamping rod (1) is fixedly connected with an upper chuck of the testing machine, and the lower end of the upper clamping rod (1) is in threaded fit with the tested nut (3) and penetrates through the tested nut (3);
the lower clamping body (2), the lower clamping body (2) is provided with a servo device which is adapted to the end face of the tested nut (3), and the lower clamping body (2) is provided with a lower clamping rod (205) connected with a lower chuck of the testing machine.
2. The special clamping tool for the tensile test of the glass fiber reinforced plastic embedded nut as claimed in claim 1, wherein the lower clamping body (2) comprises:
the clamping device comprises a clamping cylinder (202), the clamping cylinder (202) comprises a placing cavity for placing a tested nut (3), a first through hole (201) with the diameter larger than that of the upper clamping rod (1) and smaller than that of the tested nut (3) is formed in the top end of the clamping cylinder (202), a follow-up device is arranged at the bottom of the first through hole (201), and the surface of the tested nut (3) is attached to the follow-up device;
the clamping device comprises a lower clamping rod (205), one end of the lower clamping rod (205) is fixedly connected with a lower chuck of the testing machine, a mounting plate (204) is fixedly arranged at one end of the lower clamping rod (205), and the mounting plate (204) is fixedly connected with the bottom end of a clamping cylinder (202).
3. The special clamping tool for the tensile test of the glass fiber reinforced plastic embedded nut as claimed in claim 2, wherein the follow-up device comprises:
a spherical concave surface arranged below the first through hole (201);
the bottom surface of the follow-up plate (203) is attached to the end surface of the tested nut (3), the upper surface of the follow-up plate (203) is a spherical convex surface matched with the spherical concave surface, and a second through hole (207) with the diameter equal to that of the first through hole (201) is formed in the follow-up plate (203).
4. The special clamping tool for the tensile test of the glass fiber reinforced plastic embedded nut as claimed in claim 2, wherein an observation port for observing the test condition of the tested nut (3) is further formed in the circumferential side of the clamping cylinder (202), and an observation window (206) is embedded in the observation port.
5. The special clamping tool for the tensile test of the glass fiber reinforced plastic embedded nut as claimed in claim 2, wherein the joint of the lower clamping rod (205) and the mounting plate (204) is in smooth transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022892525.4U CN213714918U (en) | 2020-12-03 | 2020-12-03 | Special centre gripping frock of glass steel embedded nut tensile test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022892525.4U CN213714918U (en) | 2020-12-03 | 2020-12-03 | Special centre gripping frock of glass steel embedded nut tensile test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213714918U true CN213714918U (en) | 2021-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022892525.4U Expired - Fee Related CN213714918U (en) | 2020-12-03 | 2020-12-03 | Special centre gripping frock of glass steel embedded nut tensile test |
Country Status (1)
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| CN (1) | CN213714918U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117309598A (en) * | 2023-10-17 | 2023-12-29 | 徐州新兴达克罗科技有限公司 | Bolt detection equipment |
-
2020
- 2020-12-03 CN CN202022892525.4U patent/CN213714918U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117309598A (en) * | 2023-10-17 | 2023-12-29 | 徐州新兴达克罗科技有限公司 | Bolt detection equipment |
| CN117309598B (en) * | 2023-10-17 | 2024-04-12 | 徐州新兴达克罗科技有限公司 | Bolt detection equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210716 Termination date: 20211203 |