CN111380752A - Segment bolt tensile test clamp and tensile property testing machine - Google Patents
Segment bolt tensile test clamp and tensile property testing machine Download PDFInfo
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- CN111380752A CN111380752A CN202010338514.3A CN202010338514A CN111380752A CN 111380752 A CN111380752 A CN 111380752A CN 202010338514 A CN202010338514 A CN 202010338514A CN 111380752 A CN111380752 A CN 111380752A
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0423—Chucks, fixtures, jaws, holders or anvils using screws
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a segment bolt tensile test fixture and a tensile property testing machine, wherein the segment bolt tensile test fixture comprises a first fixture component for fixing a nut end of an arc bolt to be tested and a second fixture component for fixing a thread end of the arc bolt to be tested, the first fixture component comprises a first base and a limiting sleeve, the first end of the limiting sleeve is movably connected with the first base and is internally provided with a first through hole for the nut end to pass through, and the second end of the limiting sleeve is internally provided with a second through hole for the thread end to pass through, wherein the first through hole is communicated with the second through hole, and the aperture of the first through hole is larger than that of the second through hole; the second clamp assembly comprises a second base and a threaded sleeve, wherein one end of the threaded sleeve is movably connected with the second base, and the other end of the threaded sleeve is provided with an internal threaded hole in threaded fit with the threaded end. The segment bolt tensile test clamp can improve the efficiency of a segment bolt tensile test and the accuracy of a test result.
Description
Technical Field
The invention belongs to the technical field of bolt tensile tests, and particularly relates to a clamp for a tube sheet bolt tensile test and a tensile property testing machine.
Background
Among the prior art, tunnel segment's concatenation generally adopts the arc bolt to connect each adjacent section of jurisdiction as the fastener, because the size and the specification of section of jurisdiction have the variety, the size and the shape of arc bolt are also different, consequently must straighten it according to the particular case of every kind of bolt before carrying out bolt tensile test to accord with follow-up tensile test's basic requirement.
The alignment process that adopts traditional screw thread anchor clamps to carry out section of jurisdiction bolt tensile properties to detect at present is comparatively complicated, and is inefficient, is difficult to once only straighten and targets in place, simultaneously, the following phenomenon can appear in actual alignment operation in-process:
(1) the bolt is easy to adjust excessively, so that the bolt is warped or deformed before a tensile test, and the accuracy of a test result is further influenced;
(2) the threaded end of the bolt is easily damaged, so that the integrity of the test sample is damaged, and the accuracy of the test result is further influenced.
Therefore, how to improve the efficiency of the test and the accuracy of the test result in the straightening process of the segment bolt tensile property detection is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a clamp for a segment bolt tensile test, which aims to improve the efficiency of the segment bolt tensile test and the accuracy of a test result.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a pipe slice bolt tensile test clamp comprises a first clamp assembly and a second clamp assembly, wherein the first clamp assembly is used for fixing a nut end of an arc bolt to be tested, the second clamp assembly is used for fixing a threaded end of the arc bolt to be tested, the first clamp assembly comprises a first base and a limiting sleeve, the first end of the limiting sleeve is movably connected with the first base and is internally provided with a first through hole through which the nut end can pass, the second end of the limiting sleeve is internally provided with a second through hole through which the threaded end can pass, the first through hole is communicated with the second through hole, and the aperture of the first through hole is larger than that of the second through hole; the second clamp assembly comprises a second base and a threaded sleeve, wherein one end of the threaded sleeve is movably connected with the second base, and the other end of the threaded sleeve is provided with an internal threaded hole matched with the threaded end in a threaded mode.
Furthermore, the first clamp assembly further comprises a first bolt, a first mounting vacancy is formed in one end of the first base, and the first end of the limiting sleeve is rotatably connected to the first mounting vacancy of the first base through the first bolt.
Further, first anchor clamps subassembly still includes first bolt and connecting rod, the one end of first base has first installation vacancy, stop collar's first end is passed through the connecting rod with first bolt rotate connect in first base in the first installation vacancy, wherein, the one end of connecting rod with stop collar's first end can be dismantled and be connected, the other end pass through first bolt rotate connect in first base in the first installation vacancy.
Further, one end of the connecting rod is in threaded fit connection with the first end of the limiting sleeve.
Further, the second clamp assembly further comprises a second bolt, a second mounting vacancy is formed in one end of the second base, and one end of the threaded sleeve is rotatably connected to the second mounting vacancy of the second base through the second bolt.
Further, the first clamp assembly further includes a washer positionable within the first through bore, wherein an inner diameter of the washer is greater than an outer diameter of the threaded end and less than an outer diameter of the nut end, and an outer diameter of the washer is greater than an aperture of the second through bore.
Correspondingly, the invention further provides a tensile property testing machine, which comprises a testing machine main body and the segment bolt tensile test clamp as claimed in any one of claims 1 to 6, wherein a first chuck and a second chuck which are oppositely arranged are arranged on the testing machine main body, one end of the first base, which is far away from the nut end, is clamped on the first chuck, and one end of the second base, which is far away from the threaded end, is clamped on the second chuck.
Compared with the prior art, the invention has the beneficial effects that:
when the segment bolt tensile test fixture is used, only the nut end of the arc bolt is inserted into the limiting sleeve and the threaded end of the arc bolt is screwed into the threaded sleeve, so that the operation is very simple and convenient, and the threaded sleeve can be arranged to prevent the threaded end of the arc bolt from being damaged in the test process; simultaneously, because spacing sleeve and the first base of mountable on tensile property testing machine are swing joint, and threaded sleeve and the second base of mountable on tensile property testing machine are swing joint too, consequently, can adjust the experimental angle of arc bolt in a flexible way in the experimentation, avoid appearing adjusting excessive problem. Therefore, the segment bolt tensile test fixture provided by the invention can realize the continuous operation of bolt sample alignment and tensile test, not only improves the test efficiency, but also can avoid the problems of excessive adjustment and thread damage in the test process, and effectively improves the accuracy of the test result.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a segment bolt tensile test fixture in an embodiment of the present invention;
FIG. 2 is a schematic structural view of a stop sleeve according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a first base according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a second base according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a segment bolt tensile test fixture in another embodiment of the present invention;
FIG. 6 is a schematic view of a stop sleeve according to another embodiment of the present invention (including a washer);
FIG. 7 is a schematic structural diagram of an arc bolt to be tested in the prior art;
fig. 8 is a schematic view illustrating a principle of use of the segment bolt tensile test fixture in an embodiment of the present invention.
Description of reference numerals:
1-a first clamp assembly, 11-a first base, 111-a first mounting vacancy, 12-a limiting sleeve, 121-a first through hole, 122-a second through hole, 13-a first bolt, 14-a connecting rod, 15-a gasket, 2-a second clamp assembly, 21-a second base, 211-a second mounting vacancy, 22-a threaded sleeve, 221-an internal threaded hole, 23-a second bolt, 3-an arc bolt to be tested, 31-a nut end, and 32-a threaded end.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, 2 and 7, an embodiment of the present invention provides a tube bolt tensile test fixture, including a first fixture assembly 1 for fixing a nut end 31 of an arc bolt 3 to be tested and a second fixture assembly 2 for fixing a threaded end 32 of the arc bolt 3 to be tested, where the first fixture assembly 1 encloses a first base 11 and a limiting sleeve 12, a first end of the limiting sleeve 12 is movably connected to the first base 11 and has a first through hole 121 therein through which the nut end 31 can pass, and a second end of the limiting sleeve 12 has a second through hole 122 therein through which the threaded end 32 can pass, where the first through hole 121 is communicated with the second through hole 122, and an aperture of the first through hole 121 is larger than an aperture of the second through hole 122; the second clamp assembly 2 comprises a second base 21 and a threaded sleeve 22, wherein one end of the threaded sleeve 22 is movably connected with the second base 21 and the other end has an internally threaded hole 221 in threaded engagement with the threaded end 32.
In the embodiment, when the segment bolt tensile test fixture is used, only the nut end 31 of the arc bolt is inserted into the limiting sleeve 12 and the threaded end 32 of the arc bolt is screwed into the threaded sleeve 22, so that the operation is very simple and convenient, and the threaded sleeve 22 can be arranged to prevent the threaded end 32 of the arc bolt from being damaged in the test process; meanwhile, the limiting sleeve 12 is movably connected with the first base 11 which can be installed on the tensile property testing machine, and the threaded sleeve 22 is movably connected with the second base 21 which can be installed on the tensile property testing machine, so that the testing angle of the arc-shaped bolt can be flexibly adjusted in the testing process, and the problem of excessive adjustment is avoided. Therefore, the segment bolt tensile test clamp can realize the continuous alignment of bolt samples and the continuous tensile test, not only improves the test efficiency, but also can avoid the problems of excessive adjustment and thread damage in the test process, and effectively improves the accuracy of test results.
Further, referring to fig. 1 to 3, in an exemplary embodiment, the first clamp assembly 1 further includes a first pin 13, one end of the first base 11 has a first mounting vacancy 111, and the first end of the limiting sleeve 12 is rotatably connected to the first mounting vacancy 111 of the first base 11 through the first pin 13.
In this embodiment, based on above-mentioned structural design for stop sleeve 12 can use first bolt 13 to rotate as the axle is nimble, and not only simple structure is reliable, can adjust the experimental angle of arc bolt in a flexible way in the process of the test moreover, thereby can avoid appearing adjusting excessive problem in the process of the test, is favorable to improving the accuracy of test result.
Further, referring to fig. 3 and 5, in another exemplary embodiment, the first clamp assembly 1 further includes a first pin 13 and a connecting rod 14, one end of the first base 11 has a first mounting vacancy 111, and a first end of the limiting sleeve 12 is rotatably connected to the first mounting vacancy 111 of the first base 11 through the connecting rod 14 and the first pin 13, wherein one end of the connecting rod 14 is detachably connected to the first end of the limiting sleeve 12, and the other end is rotatably connected to the first mounting vacancy 111 of the first base 11 through the first pin 13. Wherein, detachable connection can be realized through modes such as snap connection, screw-thread fit connection between connecting rod 14 and spacing sleeve 12.
In the embodiment, based on the above structural design, the whole limiting sleeve 12 and the connecting rod 14 can flexibly rotate around the first bolt 13, not only the structure is simple and reliable, but also the testing angle of the arc bolt can be flexibly adjusted in the testing process, thereby avoiding the problem of over adjustment in the test process, being beneficial to improving the accuracy of the test result, meanwhile, the nut end 31 of the arc bolt 3 to be measured can be conveniently arranged in the limiting sleeve 12 by additionally arranging the connecting rod 14, the first pin 13 does not need to be designed to be detachable (i.e. the connection between the first pin 13 and the first base 11 can be a fixed connection), and the pin hole matched with the first pin 13 does not need to be arranged on the limiting sleeve 12, thereby being beneficial to improving the strength of the limiting sleeve 12 and leading the tensile test of the bolt to be carried out more stably.
Further, referring to fig. 5-7, in an exemplary embodiment, one end of the connecting rod 14 is threadably engaged with the first end of the stop sleeve 12. Illustratively, an external thread is arranged at one end of the connecting rod 14, an internal thread is arranged in the first through hole 121, and one end of the connecting rod 14 can be in threaded fit in the first through hole 121 of the limiting sleeve 12.
In this embodiment, based on above-mentioned structural design, realized being connected dismantled between connecting rod 14 and the stop collar 12, moreover, during the installation, compress tightly the nut end 31 of the arc bolt 3 that awaits measuring in screwing into first through-hole 121 through connecting rod 14 for the nut end 31 of the arc bolt 3 that awaits measuring can fasten and stop collar 12 in, thereby be favorable to further improving tensile test's stability.
Further, referring to fig. 1 and 4, in an exemplary embodiment, the second clamp assembly 2 further includes a second pin 23, one end of the second base 21 has a second mounting void 211, and one end of the threaded sleeve 22 is rotatably coupled to the second base 21 in the second mounting void 211 via the second pin 23.
In this embodiment, based on above-mentioned structural design for threaded sleeve 22 can use second bolt 23 to rotate as the axle is nimble, and not only simple structure is reliable, can adjust the experimental angle of arc bolt in a flexible way in the process of the test moreover, thereby can avoid appearing adjusting excessive problem in the process of the test, is favorable to improving the accuracy of test result.
Further, referring to fig. 5-7, in an exemplary embodiment, the first clamp assembly 1 further includes a washer 15 positionable within the first throughbore 121, wherein an inner diameter of the washer 15 is greater than an outer diameter of the threaded end 32 and less than an outer diameter of the nut end 31, and an outer diameter of the washer 15 is greater than an aperture of the second throughbore 122. Illustratively, the washer 15 is annular.
In this embodiment, above-mentioned packing ring 15 can be customized according to the bolt of different specifications, so, when using, through the packing ring 15 of changing different diameter specifications for the spacing sleeve 12 of a specification can supply the bolt of multiple specification to test the use, makes the use of a whole set of anchor clamps can be more nimble, and the practicality is better.
In order to facilitate understanding of the duct piece bolt tensile test fixture disclosed by the invention, referring to fig. 3 to 8, in a specific embodiment, a straightening process for detecting the tensile property of a duct piece bolt by using the duct piece bolt tensile test fixture is as follows:
before use, selecting clamp parts with corresponding sizes according to the specification of the arc bolt 3 to be detected; when the device is used, the nut end 31 of the arc bolt 3 to be tested can be inserted into the limiting sleeve 12 by matching with the gasket 15, and the threaded end 32 is screwed into the threaded sleeve 22; then, the connecting rod 14 can be screwed into the first through hole 121 of the limiting sleeve 12, so that the nut end 31 of the arc bolt 3 to be tested can be fastened in the limiting sleeve 12; then, the tensile property testing machine can be started to clamp one end, far away from the connecting rod 14, of the first base 11 in an upper chuck of the tensile property testing machine, and the connecting rod 14 which is connected with the limiting sleeve 12 into a whole is installed in a first installation vacancy 111 of the first base 11 through a first bolt 13, so that the connecting rod 14 can flexibly rotate by taking the first bolt 13 as an axis; then, one end of the second base 21, which is far away from the threaded sleeve 22, can be clamped in a lower chuck of the tensile property testing machine, and the threaded sleeve 22 is screwed and installed on the threaded end 32 of the arc bolt 3 to be tested; the end of the threaded sleeve 22 remote from the threaded end 32 can then be mounted in the second mounting void 211 of the second base 21 by means of the second pin 23; and finally, starting the test according to the standard test speed, namely finishing the straightening of the bolt and the tensile test of the bolt in sequence.
It should be noted that other contents of the segment bolt tensile test fixture disclosed by the present invention can be referred to in the prior art, and are not described herein again.
Correspondingly, the embodiment of the invention also provides a tensile property testing machine, which comprises a testing machine main body and the segment bolt tensile test clamp in any embodiment, wherein the testing machine main body is provided with a first clamp and a second clamp which are oppositely arranged, one end of the first base 11, which is far away from the nut end 31, is clamped on the first clamp, and one end of the second base 21, which is far away from the threaded end 32, is clamped on the second clamp.
In this embodiment, benefit from the improvement of above-mentioned section of jurisdiction bolt tensile test anchor clamps, the tensile properties testing machine of this embodiment can reach the same technological effect with above-mentioned section of jurisdiction bolt tensile test anchor clamps, and it is no longer repeated here.
It should be noted that other contents of the tensile testing machine of the present embodiment can be referred to in the prior art, and are not described herein again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (7)
1. The clamp for the tensile test of the pipe bolt is characterized by comprising a first clamp assembly and a second clamp assembly, wherein the first clamp assembly is used for fixing a nut end of an arc bolt to be tested, the second clamp assembly is used for fixing a threaded end of the arc bolt to be tested, the first clamp assembly comprises a first base and a limiting sleeve, the first end of the limiting sleeve is movably connected with the first base, a first through hole for the nut end to pass through is formed in the first end of the limiting sleeve, a second through hole for the threaded end to pass through is formed in the second end of the limiting sleeve, the first through hole is communicated with the second through hole, and the aperture of the first through hole is larger than that of the second through hole; the second clamp assembly comprises a second base and a threaded sleeve, wherein one end of the threaded sleeve is movably connected with the second base, and the other end of the threaded sleeve is provided with an internal threaded hole matched with the threaded end in a threaded mode.
2. The segment bolt tensile test fixture of claim 1, wherein the first fixture assembly further comprises a first pin, wherein one end of the first base has a first mounting void, and the first end of the position sleeve is rotatably connected to the first base in the first mounting void via the first pin.
3. The segment bolt tensile test fixture of claim 1, wherein the first fixture assembly further comprises a first pin and a connecting rod, one end of the first base has a first mounting vacancy, the first end of the limiting sleeve is rotatably connected to the first base in the first mounting vacancy through the connecting rod and the first pin, wherein one end of the connecting rod is detachably connected to the first end of the limiting sleeve, and the other end of the connecting rod is rotatably connected to the first base in the first mounting vacancy through the first pin.
4. The segment bolt tensile test fixture of claim 3, wherein one end of the connecting rod is in threaded engagement with the first end of the limiting sleeve.
5. The segment bolt tensile test fixture of claim 1, wherein said second fixture assembly further comprises a second pin, one end of said second base having a second mounting void, one end of said threaded sleeve rotatably coupled to said second base in said second mounting void via said second pin.
6. The segment bolt tensile test fixture of any of claims 1-5, wherein the first fixture assembly further comprises a washer positionable within the first through bore, wherein an inner diameter of the washer is greater than an outer diameter of the threaded end and less than an outer diameter of the nut end, and wherein an outer diameter of the washer is greater than an aperture of the second through bore.
7. A tensile property testing machine is characterized by comprising a testing machine body and the segment bolt tensile test clamp as claimed in any one of claims 1 to 6, wherein a first chuck and a second chuck are oppositely arranged on the testing machine body, one end of the first base, far away from the nut end, is clamped on the first chuck, and one end of the second base, far away from the threaded end, is clamped on the second chuck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010338514.3A CN111380752A (en) | 2020-04-26 | 2020-04-26 | Segment bolt tensile test clamp and tensile property testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010338514.3A CN111380752A (en) | 2020-04-26 | 2020-04-26 | Segment bolt tensile test clamp and tensile property testing machine |
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| Publication Number | Publication Date |
|---|---|
| CN111380752A true CN111380752A (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010338514.3A Pending CN111380752A (en) | 2020-04-26 | 2020-04-26 | Segment bolt tensile test clamp and tensile property testing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112691990A (en) * | 2020-12-09 | 2021-04-23 | 深圳市富吉真空技术有限公司 | Automatic transfer device for milling cutter cleaning process |
-
2020
- 2020-04-26 CN CN202010338514.3A patent/CN111380752A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112691990A (en) * | 2020-12-09 | 2021-04-23 | 深圳市富吉真空技术有限公司 | Automatic transfer device for milling cutter cleaning process |
| CN112691990B (en) * | 2020-12-09 | 2022-05-03 | 深圳市富吉真空技术有限公司 | Automatic transfer device for milling cutter cleaning process |
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