CN214173970U - Short sandwich bolt tensile test device - Google Patents
Short sandwich bolt tensile test device Download PDFInfo
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- CN214173970U CN214173970U CN202023049855.3U CN202023049855U CN214173970U CN 214173970 U CN214173970 U CN 214173970U CN 202023049855 U CN202023049855 U CN 202023049855U CN 214173970 U CN214173970 U CN 214173970U
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Abstract
The utility model provides a short intermediate layer bolt tensile test device, it includes upper bracket, guide pin, goes up test board, undersetting, nut and lower test board. The upper support and the lower support are the same in structure and are both U-shaped structures, the upper test plate and the lower test plate are the same in structure and are both rectangular structures, and the lower test plate is placed below the upper test plate and is perpendicular to the upper test plate to form a cross arrangement; the central positions of the upper test plate and the lower test plate are respectively provided with a through hole for the bolt to be tested to pass through, and the lower end of the bolt to be tested is fixed by means of a nut after sequentially passing through the central through holes at the central positions of the upper test plate and the lower test plate. The utility model discloses simple structure can carry out tensile test to short intermediate layer bolt to experimental precision is high, convenient to use.
Description
Technical Field
The utility model relates to a bolt tensile test field, concretely relates to short intermediate layer bolt tensile test device.
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. Creep data can be obtained from tensile tests conducted at elevated temperatures.
A bolt is a connecting member commonly used in the field of machinery and the like, and a conventional bolt tensile test jig generally only can apply tension to a common bolt, and as shown in fig. 1, in a conventional bolt tensile test apparatus, two identical jigs are generally used to apply a load to a bolt. But because the aviation field has the bolt fastener of many short intermediate layers, traditional bolt tensile test anchor clamps can't satisfy short intermediate layer bolt tensile test and require that the bolt distance that awaits measuring is little and the little condition of axiality error, consequently need develop a tensile test device that can carry out tensile test to short intermediate layer bolt.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned prior art not enough, provide a short intermediate layer bolt tensile test device, it is in through lower test board setting go up the below of test board and with go up the perpendicular crisscross form setting that forms of test board to and the upper bracket and the undersetting that are crisscross setting equally set up respectively with the built-up mounting setting of lower test board and last test board, can carry out tensile test to short intermediate layer bolt, and experimental axiality error is little.
Specifically, the utility model provides a short sandwich bolt tensile test device, which comprises an upper support, an upper test plate, a lower support and a lower test plate; the upper support and the lower support are of the same structure and are both U-shaped structures, the upper test plate and the lower test plate are of the same structure and are both rectangular structures, the long edge of the upper test plate is parallel to the transverse edge of the U-shaped structure of the lower support, and the two ends of the upper test plate are respectively connected with the upper end of the U-shaped end part of the lower support by means of guide pins; the lower test plate is arranged below the upper test plate and is perpendicular to the upper test plate to form a cross-shaped arrangement, the transverse edge of the U-shaped structure of the upper support is parallel to the long edge of the lower test plate, and the two ends of the lower test plate are respectively connected with the lower end of the U-shaped end part of the upper support through guide pins; the central positions of the upper test plate and the lower test plate are respectively provided with a central through hole for the bolt to be tested to pass through, and the lower end of the bolt to be tested sequentially penetrates through the central through holes of the upper test plate and the lower test plate and then is fastened by means of nuts.
Preferably, the upper support, the lower support, the upper test plate and the lower test plate are respectively provided at both ends thereof with guide pin holes through which the guide pins pass.
Preferably, the upper test plate has a thickness smaller than a height of the U-shaped opening of the upper holder, and the lower test plate has a thickness smaller than a height of the U-shaped opening of the lower holder.
Preferably, the sum of the thicknesses of the upper test plate and the lower test plate is slightly smaller than the interlayer length of the bolt to be tested.
Preferably, the upper surface of the upper support is provided with a mounting hole for connecting a tensile testing machine applied by a load.
Compared with the prior art, the utility model discloses an effect as follows:
the utility model provides a short intermediate layer bolt tensile test device, its simple structure can carry out tensile test to short intermediate layer bolt to experimental precision is high, easy operation, convenient to use. The utility model discloses an anchor clamps compare with traditional bolt tensile test anchor clamps, and the cost is lower, and the operation is more convenient, and tensile test's axiality error is littleer.
Drawings
FIG. 1 is a schematic structural diagram of a bolt tensile testing apparatus in the prior art;
fig. 2 is a schematic perspective view of the short sandwich bolt tensile test apparatus of the present invention;
fig. 3 is a front view of the present invention;
fig. 4 is a schematic structural view of the lower support of the present invention;
FIG. 5 is a schematic structural diagram of an upper test plate according to the present invention;
fig. 6 is a schematic view of the guide pin of the present invention.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The utility model provides a short intermediate layer bolt tensile test device, as shown in figure 2 and figure 3, it includes upper bracket 1, guide pin 2, goes up test board 3, undersetting 4, nut 5 and lower test board 6. The lower support 4, the lower test plate 6, the upper test plate 3 and the upper support 1 are sequentially arranged from bottom to top.
The upper support 1 and the lower support 4 are the same in structure and are both U-shaped structures, the upper test plate 3 and the lower test plate 6 are the same in structure and are both rectangular structures, the long edge 30 of the upper test plate 3 is parallel to the transverse edge 40 of the U-shaped structure of the lower support 4, and the two ends of the upper test plate 3 are respectively connected with the upper ends of the two U-shaped end parts of the U-shaped structure of the lower support 4 by means of the guide pins 2; the lower test plate 6 is placed below the upper test plate 3 and is perpendicular to the upper test plate 3 to form a cross-shaped arrangement, the transverse edge 11 of the U-shaped structure of the upper support 1 is parallel to the long edge 61 of the lower test plate 6, and the two ends of the lower test plate 6 are respectively connected with the lower ends of the two U-shaped end portions of the U-shaped structure of the upper support 1 by means of the guide pins 2.
The central positions of the upper test plate 3 and the lower test plate 6 are respectively provided with a central through hole 32 for the bolt 7 to be tested to pass through, and the lower end of the bolt 7 to be tested is fixed by means of the nut 5 after sequentially passing through the central through holes 32 of the upper test plate 3 and the lower test plate 6.
The two end faces of the two U-shaped end portions of the upper support 1 and the lower test plate 6 are respectively provided with guide pin holes through which the guide pins 2 pass, and similarly, the two end portions of the lower support 4 and the upper test plate 3 are respectively provided with guide pin holes through which the guide pins 2 pass. Specifically, fig. 4 shows a schematic structural diagram of the lower support 4, two end faces of the U-shaped end of the lower support 4 are respectively provided with a guide pin hole 41, and the structure of the upper support 1 is the same as that of the lower support 4, which is not described herein again.
Fig. 5 shows a schematic structural diagram of the upper test plate 3, two end portions of the upper test plate 3 are respectively provided with a guide pin hole 31, a central through hole 32 for the bolt 7 to be tested to pass through is formed in the central position of the upper test plate 3, and the structure of the lower test plate 6 is the same as that of the upper test plate 3, which is not described herein again.
Fig. 6 shows a schematic view of the structure of the guide pin 2, the guide pin 2 being a smooth cylinder as a whole for connecting the lower holder 4 with the upper test plate 3 or for connecting the upper holder 1 with the lower test plate 6.
The thickness of upper test plate 3 and lower test plate 6 is smaller than the height of the U-shaped openings of upper holder 1 and lower holder 4, respectively. That is, the thickness of upper test plate 3 is smaller than the height of the U-shaped opening of upper holder 1, and the thickness of lower test plate 6 is smaller than the height of the U-shaped opening of lower holder 4.
Preferably, the sum of the thicknesses of the upper test plate 3 and the lower test plate 6 is slightly smaller than the interlayer length of the bolt 7 to be tested. The interlayer length of the bolt 7 to be tested is the length between the head of the bolt 7 to be tested and the nut 5 after the lower end of the bolt 7 to be tested sequentially passes through the central through holes 32 of the upper test plate 3 and the lower test plate 6 and is fastened by the nut 5.
The upper surface of the upper support 1 is provided with a mounting hole 13 for connecting a load applying tensile tester.
The following further explains the operation method of the tensile testing apparatus of the present invention:
first, the bolt 7 to be tested is inserted through the central through hole 32 of the upper test plate 3 and the lower test plate 6 and coupled to the nut 5.
Next, the upper test plate 3 and the lower test plate 6 were adjusted so that the upper test plate 3 and the lower test plate 6 were arranged in a crisscross manner.
Then, an upper test plate 3 is placed on a lower support 4, the upper test plate 3 and the lower support 4 are connected together by using a guide pin 2, and the lower support 4 is arranged on the working table of the tensile testing machine; and the upper mount 1 is placed on the lower test plate 6, and the upper mount 1 and the lower test plate 6 are coupled using the guide pins 2.
Finally, the mounted testing device is arranged on the working table of the tensile testing machine through the mounting hole 13; starting a tensile testing machine, and applying a working load to an upper support 1 of the testing device in a downward pressing mode; and loading the assembly of the bolt 7 and the nut 5 to be tested until the assembly is broken, and finishing the test.
The utility model provides a short intermediate layer bolt tensile test device, its simple structure can carry out tensile test to short intermediate layer bolt to experimental precision is high, easy operation, convenient to use. The utility model discloses an anchor clamps compare with traditional bolt tensile test anchor clamps, through the last test board 3 and lower test board 6 of cross setting to and the upper bracket 1 and the undersetting 4 that are the cross setting equally set up respectively with the combination setting of lower test board 6 and last test board 3, make tensile test's axiality error littleer, more be suitable for to the tensile of short intermediate layer bolt.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (5)
1. The utility model provides a short intermediate layer bolt tensile test device which characterized in that: the device comprises an upper support, an upper test plate, a lower support and a lower test plate;
the upper support and the lower support are of the same structure and are both U-shaped structures, the upper test plate and the lower test plate are of the same structure and are both rectangular structures, the long edge of the upper test plate is parallel to the transverse edge of the U-shaped structure of the lower support, and the two ends of the upper test plate are respectively connected with the upper end of the U-shaped end part of the lower support by means of guide pins; the lower test plate is arranged below the upper test plate and is perpendicular to the upper test plate to form a cross-shaped arrangement, the transverse edge of the U-shaped structure of the upper support is parallel to the long edge of the lower test plate, and the two ends of the lower test plate are respectively connected with the lower end of the U-shaped end part of the upper support through guide pins;
the central positions of the upper test plate and the lower test plate are respectively provided with a central through hole for the bolt to be tested to pass through, and the lower end of the bolt to be tested sequentially penetrates through the central through holes of the upper test plate and the lower test plate and then is fastened by means of nuts.
2. The short sandwich bolt tensile test device of claim 1, characterized in that: and two end parts of the upper support, the lower support, the upper test plate and the lower test plate are respectively provided with a guide pin hole for a guide pin to pass through.
3. The short sandwich bolt tensile test device of claim 2, characterized in that: the thickness of the upper test plate is smaller than the height of the U-shaped opening part of the upper support, and the thickness of the lower test plate is smaller than the height of the U-shaped opening part of the lower support.
4. The short sandwich bolt tensile test device of claim 3, characterized in that: the sum of the thicknesses of the upper test plate and the lower test plate is slightly smaller than the length of the interlayer of the bolt to be tested.
5. The short sandwich bolt tensile test device of claim 1, characterized in that: and the upper surface of the upper support is provided with a mounting hole for connecting a tensile testing machine applied by load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023049855.3U CN214173970U (en) | 2020-12-17 | 2020-12-17 | Short sandwich bolt tensile test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023049855.3U CN214173970U (en) | 2020-12-17 | 2020-12-17 | Short sandwich bolt tensile test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214173970U true CN214173970U (en) | 2021-09-10 |
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ID=77606718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023049855.3U Active CN214173970U (en) | 2020-12-17 | 2020-12-17 | Short sandwich bolt tensile test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214173970U (en) |
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2020
- 2020-12-17 CN CN202023049855.3U patent/CN214173970U/en active Active
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