CN209745724U - T-shaped joint shear test device - Google Patents
T-shaped joint shear test device Download PDFInfo
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- CN209745724U CN209745724U CN201822050245.1U CN201822050245U CN209745724U CN 209745724 U CN209745724 U CN 209745724U CN 201822050245 U CN201822050245 U CN 201822050245U CN 209745724 U CN209745724 U CN 209745724U
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- sliding groove
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- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000010008 shearing Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a T-shaped joint shearing test device, which belongs to the technical field of material shearing strength detection, wherein supporting plates are arranged on two sides of a base, supporting clamping plates are symmetrically arranged above the base, a sample is arranged between the supporting clamping plates, a pressure head is transversely arranged above the supporting clamping plates, a base sliding groove is arranged on the base, a supporting clamping plate sliding groove is arranged on the lower side of the supporting clamping plate, the base sliding groove corresponds to the supporting clamping plate sliding groove in position, and a tightening handle is utilized to pass through the supporting clamping plate sliding groove and the base sliding groove to connect the base and the supporting clamping plate; a positioning cushion block is also arranged above the base; the device of the utility model can meet the requirements of web samples with different thicknesses in the T-shaped joint by utilizing the distance adjustment of the supporting clamping plate, thereby improving the universality of the testing device; meanwhile, the clamping mode of the clamping plate can ensure that the loading pressure head applies pure shearing load to the sample along the vertical direction, so that no additional bending moment is generated to the sample in the test process, and the reliability of the shearing test is improved.
Description
Technical Field
the utility model belongs to the technical field of material shear strength detects, especially, T type connects shear test device.
Background
The T-shaped joint structure is a connecting structure widely used in the fields of aerospace, automobiles and the like, and research on the strength of the T-shaped joint structure under different load conditions is an important research subject of designers. The shear is the main loading form of the T-shaped joint structure, and the shear strength of the T-shaped joint is obtained through tests, so that a basis is provided for engineering design. However, the existing T-shaped joint shear test device cannot well simulate the action of pure shear load, non-pure shear damage may be caused, and the T-shaped joint shear performance test result is often inaccurate, so that a satisfactory test result cannot be obtained.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a T type connects shear test device is disclosed to the problem that exists among the prior art, and the device supports splint about through setting up, and can the distance adjustment, satisfies the web sample of different thickness in the T type connects, can guarantee the production of no additional moment of flexure simultaneously through the centre gripping mode of splint, has solved the effect that can not simulate pure shear load well that exists among the prior art, causes the technical defect that non-pure shear failure destroys.
the utility model discloses a realize like this:
The utility model provides a T type connects shear test device, includes the base, and the base both sides are provided with the backup pad, and the backup pad can be prevented to test device because of the inhomogeneous production slope of atress by placing respectively in the both sides of base. The supporting plate is a flat plate structure designed based on equal rigidity. Base top bilateral symmetry is provided with two and supports the splint, and the T type that awaits measuring connects the sample and arranges in between the splint that support, utilizes the distance adjustment that supports the splint, can satisfy the web sample of different thickness in the T type connects, has greatly improved test device's commonality.
A pressure head is transversely arranged above the supporting clamping plate; a base sliding groove is formed in the base, a supporting clamping plate sliding groove is formed in the lower side of the supporting clamping plate, and the base sliding groove corresponds to the supporting clamping plate sliding groove in position; the base and the supporting clamping plate are connected by a screwing handle penetrating through the supporting clamping plate sliding groove and the base sliding groove; supporting clamp plate bolt holes are correspondingly formed in the peripheries of the supporting clamp plate and the contact web plate of the sample, and the sample is locked and fixed by penetrating locking bolts through the supporting clamp plate bolt holes; the base top still be provided with the location cushion, the location cushion left and right sides face support splint laminating with both sides.
Furthermore, the support plate is provided with a support plate bolt hole, the two sides of the base are provided with base bolt holes, the support plate bolt hole corresponds to the base bolt hole in position, and the support plate and the base are fixed with each other by respectively penetrating the support plate bolt hole and the base bolt hole through locking bolts.
Further, the supporting plate is a flat plate structure designed based on equal rigidity.
furthermore, the contact surface of the support clamping plate and the sample is a sample contact surface, and the sample contact surface (9) is provided with knurling for increasing the friction force between the support clamping plate and the sample.
Further, the top of pressure head set up the screw rod, be connected pressure head and testing machine chuck through the screw rod, shear load is applyed and is realized through the pressure head.
furthermore, an inwards concave cavity is formed below the base.
Furthermore, the positioning cushion block is in a step shape. The positioning cushion block is placed on the upper surface of the base, the left side surface and the right side surface of the cushion block are attached to the supporting clamping plates on the two sides, the situation that the side surfaces of the left supporting clamping plate and the right supporting clamping plate are not parallel any more due to the fact that a gap exists between the supporting clamping plates when the locking bolt is screwed in is prevented, the positioning cushion block is in a step shape, and the requirements of various thickness samples can be met.
Furthermore, a lateral web plate is arranged on the supporting clamping plate.
compared with the prior art, the beneficial effects of the utility model are that:
1) The shear test device is characterized in that supporting clamping plates are symmetrically arranged above a base, a sample is arranged between the supporting clamping plates, no additional bending moment is generated in a clamping mode of the clamping plates, and meanwhile, a shear load is applied through a pressure head transversely arranged above the supporting clamping plates; the device of the utility model solves the problem of additional bending moment of the existing T-shaped shear test device, and improves the accuracy of the test result;
2) By utilizing the device of the utility model, the sample to be tested can be directly arranged on the device, thereby solving the problem that the sample needs to be punched and assembled in the prior test process and simplifying the test steps;
3) The locking bolt and the tightening handle are adopted, so that the installation of the sample is simplified, and the sample efficiency is improved;
4) The sliding grooves are formed in the base, so that the distance between the supporting clamping plates can be adjusted, the testing device is suitable for T-shaped connecting joints with different edge strip thicknesses, the universality of the testing device is stronger, and the arranged positioning cushion blocks prevent the side surfaces of the left and right supporting clamping plates from being parallel due to gaps existing at the lower ends of the supporting clamping plates, so that the accuracy of a testing result is improved; in addition, the positioning cushion block is in a step shape, and the requirements of samples with various thicknesses can be met.
Drawings
FIG. 1 is a schematic structural view of the T-joint shear test device of the present invention;
FIG. 2 is a schematic view of the base structure of the T-joint shear test device of the present invention;
FIG. 3 is a schematic view of a locking bolt of the T-joint shear test device of the present invention;
FIG. 4 is a schematic view of a tightening handle of the T-joint shear test apparatus of the present invention;
FIG. 5 is a schematic view of a positioning block of the T-joint shear test apparatus of the present invention; wherein 5(a) is a front view of the positioning pad, 5(b) is a side view of the positioning pad, and 5(c) is a top view of the positioning pad.
Wherein, 1-base, 2-supporting splint, 3-pressure head, 4-screw, 5-supporting plate, 6-supporting plate bolt hole, 7-supporting splint sliding groove, 8-supporting splint bolt hole, 9-sample contact surface, 10-base sliding groove, 11-base bolt hole, 12-concave cavity, 13-locking bolt, 14-tightening handle, 15-positioning cushion block and 16-lateral web plate.
Detailed Description
In order to make the purpose, technical solution and effect of the present invention clearer and more clear, it is clear that the following list examples are to the present invention for further detailed description. It should be noted that the embodiments described herein are only for explaining the present invention and are not used to limit the present invention.
as shown in fig. 1-2, the utility model discloses main device includes base 1, and the backup pad 5 that is used for preventing test device from producing the slope because of the atress is inhomogeneous is placed respectively to the both sides of base, backup pad 5 is the flat structure based on design of rigidity such as. The supporting plate 5 is provided with a supporting plate bolt hole 6, the two sides of the base 1 are provided with base bolt holes 11, the supporting plate bolt hole 6 corresponds to the base bolt hole 11 in position, and the supporting plate 5 and the base 1 are fixed to each other by respectively penetrating the supporting plate bolt hole 6 and the base bolt hole 11 through a locking bolt 13 shown in fig. 3.
Two supporting clamping plates 2 are symmetrically arranged on the left and right above the base 1, and a sample to be tested is arranged between the supporting clamping plates 2; the supporting splints 2 are arranged symmetrically left and right and used for clamping a sample; the contact surface 9 of the supporting clamping plate 2 and the sample is provided with knurls to increase the friction force between the supporting clamping plate 2 and the sample, the supporting clamping plate 2 is provided with a lateral web 16 to enhance the supporting rigidity, and the distance between the supporting clamping plates is determined according to the size of the sample.
A base sliding groove 10 is formed in the base 1, a supporting clamping plate sliding groove 7 is formed in the lower side of the supporting clamping plate 2, and the base sliding groove 10 corresponds to the supporting clamping plate sliding groove 7 in position; the base 1 and the support clamp 2 are connected by a tightening handle 14 shown in fig. 4 through the support clamp sliding grooves 7 and the base sliding grooves 10. Supporting splint bolt holes 8 are correspondingly formed in the peripheries of the supporting splint 2 and the contact web of the sample, and the sample is locked and fixed by penetrating the supporting splint bolt holes 8 through locking bolts 13.
As shown in fig. 5, a positioning pad 15 is further disposed above the base 1, and fig. 5(a), 5(b), and 5(c) are a front view, a side view, and a plan view of the positioning pad 15, respectively. The left and right sides of the positioning cushion block 15 are jointed with the supporting splints 2 at the two sides. The middle part of the lower end of the base is provided with a concave cavity 12. The shear load application is realized through a pressure head 3, and the pressure head is connected with a chuck of the tester through a screw rod 4.
The mounting mode of the T-shaped joint shear sample is as follows:
the handle 14 is loosened and screwed, the sample is horizontally placed in a T shape, the side surfaces of a web plate of the sample are respectively attached to the contact surfaces 9 of the sample on the left side and the sample on the right side, and the position between the sample and the supporting splint 2 is ensured not to change in the loading process by screwing the locking bolts 13 at the top and the bottom of the supporting splint 2. Place locating pad 15 in the base upper surface, the side is laminated with the support splint 2 of both sides about locating pad 15, prevents to screw in locking bolt 13 in-process, because of the space that the lower extreme exists between two support splint 2 and support splint side no longer keep parallel about leading to, locating pad 15 is the echelonment, can satisfy multiple thickness sample demand. After the support clamp 2 and the sample are properly positioned, the tightening handle 14 is rotated to connect the support clamp to the base.
After the steps are completed, whether gaps exist between each surface of the sample and the shearing clamp or not is checked, after the adjustment is completed, the position of the base is adjusted, the pressure head 3 is ensured to be in contact with the side face of the edge strip of the T-shaped joint sample when falling, a load in the vertical direction is applied to the sample, a shearing test is carried out, and the test result is analyzed.
the foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.
Claims (8)
1. a T-shaped joint shear test device comprises a base (1), and is characterized in that supporting plates (5) are arranged on two sides of the base (1); two supporting clamping plates (2) are symmetrically arranged on the left and right above the base (1), and a T-shaped joint sample to be tested is arranged between the supporting clamping plates (2); a pressure head (3) is transversely arranged above the supporting splint (2); a base sliding groove (10) is formed in the base (1), a supporting clamping plate sliding groove (7) is formed in the lower side of the supporting clamping plate (2), and the position of the base sliding groove (10) corresponds to that of the supporting clamping plate sliding groove (7); the base (1) and the supporting splint (2) are connected by a tightening handle (14) which passes through the supporting splint sliding groove (7) and the base sliding groove (10); the periphery of the supporting clamping plate (2) and the periphery of the contact web plate of the sample are correspondingly provided with supporting clamping plate bolt holes (8), and the sample is locked and fixed by a locking bolt (13) penetrating through the supporting clamping plate bolt holes (8); the base (1) top still be provided with location cushion (15), location cushion (15) left and right sides face and the support splint (2) laminating of both sides.
2. The T-shaped joint shear test device of claim 1, wherein the support plate (5) is provided with support plate bolt holes (6), the base (1) is provided with base bolt holes (11) at two sides, the support plate bolt holes (6) correspond to the base bolt holes (11), and the support plate (5) and the base (1) are fixed to each other by respectively penetrating the support plate bolt holes (6) and the base bolt holes (11) through locking bolts (13).
3. A T-joint shear test device according to claim 2, characterized in that the support plate (5) is a flat plate structure based on equal stiffness design.
4. A T-joint shear test device as claimed in claim 1, wherein the contact surface of said holding clamp (2) with the test specimen is a test specimen contact surface (9), and said test specimen contact surface (9) is knurled.
5. The T-shaped joint shear test device of claim 1, wherein a screw (4) is arranged above the pressure head (3), and the pressure head (3) is connected with a chuck of the tester through the screw (4).
6. the T-shaped joint shear test device according to claim 1, wherein an inwardly concave cavity (12) is formed below the base (1).
7. A T-joint shear test device as claimed in claim 1, wherein said spacer block (15) is stepped.
8. A T-joint shear test device according to claim 1, wherein said holding clamp (2) is provided with a lateral web (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822050245.1U CN209745724U (en) | 2018-12-07 | 2018-12-07 | T-shaped joint shear test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822050245.1U CN209745724U (en) | 2018-12-07 | 2018-12-07 | T-shaped joint shear test device |
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| Publication Number | Publication Date |
|---|---|
| CN209745724U true CN209745724U (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822050245.1U Active CN209745724U (en) | 2018-12-07 | 2018-12-07 | T-shaped joint shear test device |
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| CN (1) | CN209745724U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443952A (en) * | 2018-12-07 | 2019-03-08 | 南京航空航天大学 | A kind of T connector shearing test device |
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2018
- 2018-12-07 CN CN201822050245.1U patent/CN209745724U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443952A (en) * | 2018-12-07 | 2019-03-08 | 南京航空航天大学 | A kind of T connector shearing test device |
| CN109443952B (en) * | 2018-12-07 | 2024-05-24 | 南京航空航天大学 | T-shaped joint shear test device |
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