CN213456385U - Tensile stress strain clamping device - Google Patents
Tensile stress strain clamping device Download PDFInfo
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- CN213456385U CN213456385U CN202022342272.3U CN202022342272U CN213456385U CN 213456385 U CN213456385 U CN 213456385U CN 202022342272 U CN202022342272 U CN 202022342272U CN 213456385 U CN213456385 U CN 213456385U
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Abstract
The utility model relates to the technical field of stress tests, in particular to a tensile stress strain clamping device, which comprises a fixed base fixedly arranged on a supporting seat of a tensile testing machine; the clamping device comprises a first clamping assembly and a second clamping assembly, wherein the first clamping assembly and the second clamping assembly are arranged in a cross manner and are arranged on the upper end face of the fixed base in a sliding manner, and a cross sample piece attached with a strain gauge is clamped between the first clamping assembly and the second clamping assembly; the pressure piece is positioned right above the center of the connecting line of the first clamping component and the second clamping component and connected with the upper end joint of the tensile testing machine, the pressure piece is hinged with the first clamping component and the second clamping component, and the pressure piece can drive the first clamping component and the second clamping component to stretch the cross sample piece under the driving of the tensile testing machine. The utility model discloses can carry out the cross to the material and stretch in order to investigate its mechanical properties.
Description
Technical Field
The utility model relates to a stress test technical field especially relates to a tensile stress clamping device that meets an emergency.
Background
With the development of digitization and intellectualization of the automobile industry, the automobile manufacturing industry is gradually improving the soft strength of virtual manufacturing, and the product period is shortened and the cost of real vehicle verification is reduced by using a CAE (Computer Aided Engineering) simulation mode. In order to better improve the calculation accuracy of CAE, it is necessary to provide data for the material performance calculated by CAE to truly reflect the stress-strain characteristics of the material. Therefore, the technical problem to be solved at present is that how to design a suitable test device by considering the mechanical property of the material, namely the cross tensile property, is urgently needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a tensile stress strain clamping device can carry out the cross to the material and stretch in order to investigate its mechanical properties.
To achieve the purpose, the utility model adopts the following technical proposal:
a tensile stress strain clamp comprising:
the fixed base is fixedly arranged on a supporting seat of the tensile testing machine;
the clamping device comprises a first clamping assembly and a second clamping assembly, wherein the first clamping assembly and the second clamping assembly are arranged in a cross manner and are arranged on the upper end face of the fixed base in a sliding manner, and a cross sample piece attached with a strain gauge is clamped between the first clamping assembly and the second clamping assembly;
the pressure piece is positioned right above the center of the connecting line of the first clamping component and the second clamping component and is connected with the upper end joint of the tensile testing machine, the pressure piece is hinged with the first clamping component and the second clamping component, and the pressure piece can drive the first clamping component and the second clamping component to stretch the cross sample piece under the driving of the tensile testing machine;
and one end of the cooling pipe is communicated with a cooling medium storage, and the other end of the cooling pipe is arranged at the central position of the cross sample piece and is used for cooling the cross sample piece.
Optionally, the first clamping assembly comprises a first clamping block and a second clamping block which are arranged at intervals, the first clamping block and the second clamping block are arranged on the fixed base in a sliding mode, a first connecting piece is hinged to the first clamping block, one end, away from the first clamping block, of the first connecting piece is hinged to the pressure piece, a second connecting piece is hinged to the second clamping block, and one end, away from the second clamping block, of the second connecting piece is hinged to the pressure piece.
Optionally, the first clamping block includes a first slider portion and a first fixing portion that are connected to each other, the first slider portion is slidably disposed on the fixing base, the first fixing portion is hinged to the first connecting member, and one end of the cross-shaped sample piece is sandwiched between the first slider portion and the first fixing portion.
Optionally, a first slide rail and a second slide rail are arranged on the fixed base, the first clamping assembly is arranged on the first slide rail, and the second clamping assembly is arranged on the second slide rail in a sliding manner.
Optionally, a plurality of rollers are uniformly distributed on the upper end surface of the first slide rail and the upper end surface of the second slide rail.
Optionally, the rollers are coated with grease.
Optionally, the second clamping assembly comprises a third clamping block and a fourth clamping block which are arranged at intervals, the third clamping block and the fourth clamping block are arranged on the fixed base in a sliding mode, a third connecting piece is hinged to the third clamping block, one end of the third clamping block is far away from the third connecting piece, the pressure piece is hinged to the third clamping block, a fourth connecting piece is hinged to the fourth clamping block, and one end of the fourth clamping block, the pressure piece is hinged to the fourth connecting piece.
Optionally, four hinge seats are uniformly distributed on the outer side of the pressure piece along the circumferential direction of the pressure piece, and the four hinge seats are hinged to the first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece in a one-to-one correspondence manner.
Optionally, the pressure piece is of a hemispherical structure, and the upper end face of the pressure piece is provided with a clamp joint.
Optionally, a through hole is formed in the fixed base, and the cooling pipe is arranged in the through hole in a penetrating manner.
The utility model has the advantages that:
the utility model provides a tensile stress strain clamping device, supporting seat fixed connection with unable adjustment base and tensile test machine, it sets up first clamping subassembly and the second clamping subassembly that press from both sides the cross sample spare to slide to be provided with on unable adjustment base, pressure spare and first clamping subassembly and second clamping subassembly are all articulated, can drive the tensile cross sample spare of first clamping subassembly and second clamping subassembly under tensile test machine's drive, thereby can carry out the cross to the material and stretch, gather the stress-strain data of cross sample spare, with expecting its mechanical properties, guarantee for the stress-strain characteristic that the material properties that CAE calculated provided data can be true reaction material. Through the arrangement of the cooling pipe, the cross sample piece can be precooled through the cooling medium, so that the mechanical property of the cross sample piece at low temperature can be tested.
Drawings
Fig. 1 is a schematic view of a tensile stress strain clamping device of the present invention;
fig. 2 is a schematic diagram of the pressure member removing device in the tensile stress strain clamping device of the present invention.
In the figure:
1. a fixed base; 11. a first slide rail; 12. a second slide rail; 13. a through hole; 14. a roller; 2. a first clamping block; 21. a first slider portion; 22. a first fixed part; 23. a first connecting member; 3. a second clamp block; 31. a second connecting member; 4. a third clamping block; 41. a third connecting member; 5. a fourth clamping block; 51. a fourth connecting member; 6. a pressure member; 61. a clamp joint; 62. a hinge mount; 7. a cross-shaped sample piece.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1-2, the utility model provides a tensile stress strain clamping device, include: the device comprises a fixed base 1, a first clamping assembly, a second clamping assembly, a pressure piece 6 and a cooling pipe, wherein the fixed base 1 is fixedly arranged on a supporting seat of a tensile testing machine; the first clamping assembly and the second clamping assembly are arranged in a cross shape and are arranged on the upper end face of the fixed base 1 in a sliding mode, and the cross-shaped sample piece 7 attached with the strain gauge is clamped between the first clamping assembly and the second clamping assembly; the pressure piece 6 is positioned right above the center of the connecting line of the first clamping component and the second clamping component and is connected with the upper end joint of the tensile testing machine, the pressure piece 6 is hinged with the first clamping component and the second clamping component, and the pressure piece 6 can drive the first clamping component and the second clamping component to stretch the cross-shaped sample piece 7 under the driving of the tensile testing machine; one end of the cooling pipe is communicated with the cooling medium storage, and the other end is arranged at the central position of the cross sample piece 7 and used for cooling the cross sample piece 7.
Through fixedly connecting the fixed base 1 with a supporting seat of a tensile testing machine, a first clamping component and a second clamping component which are used for clamping a cross sample piece 7 are arranged on the fixed base 1 in a sliding mode, and the pressure piece 6 is hinged to the first clamping component and the second clamping component and can drive the first clamping component and the second clamping component to stretch the cross sample piece 7 under the driving of the tensile testing machine, so that cross stretching can be performed on a material, stress-strain data of the cross sample piece 7 are collected to investigate the mechanical property of the cross sample piece, and the stress-strain characteristic of the reaction material, which can be real, of data provided for the material property calculated by CAE, is guaranteed. By providing the cooling tube, the cross-shaped sample piece 7 can be precooled by the cooling medium, so that the mechanical properties of the cross-shaped sample piece 7 at low temperature can be tested.
Further, in order to fix the cooling pipe, a through hole 13 is formed in the fixing base 1, and the cooling pipe is inserted into the through hole 13. The cooling medium introduced into the cooling pipe can be gas or liquid, and the flow of the cooling medium is adjusted according to different required test temperatures so as to ensure that the temperature of the tested sample meets the test requirements. For some pressure containers used for automobiles, the using environment is 0-100 ℃ below zero (even lower), and the mechanical properties of the sample pieces of the pressure containers at low temperature can be examined by introducing liquid nitrogen into a cooling pipe.
Further, first clamping subassembly includes first clamp splice 2 and the second clamp splice 3 that the interval set up, and first clamp splice 2 and second clamp splice 3 all slide to set up on unable adjustment base 1, and it has first connecting piece 23 to articulate on first clamp splice 2, and the one end that first clamp splice 2 was kept away from to first connecting piece 23 is articulated with pressure 6, and it has second connecting piece 31 to articulate on second clamp splice 3, and the one end that second clamp splice 3 was kept away from to second connecting piece 31 is articulated with pressure 6. The second clamping assembly comprises a third clamping block 4 and a fourth clamping block 5 which are arranged at intervals, the third clamping block 4 and the fourth clamping block 5 are arranged on the fixed base 1 in a sliding mode, a third connecting piece 41 is hinged to the third clamping block 4, one end, away from the third clamping block 4, of the third connecting piece 41 is hinged to the pressure piece 6, a fourth connecting piece 51 is hinged to the fourth clamping block 5, and one end, away from the fourth clamping block 5, of the fourth connecting piece 51 is hinged to the pressure piece 6.
Through the arrangement, the cross sample piece 7 is clamped between the first clamping block 2, the second clamping block 3, the third clamping block 4 and the fourth clamping block 5, the tensile testing machine applies downward acting force, the acting force is transmitted to the first clamping block 2, the second clamping block 3, the third clamping block 4 and the fourth clamping block 5 through the pressure piece 6, the first connecting piece 23, the second connecting piece 31, the third connecting piece 41 and the fourth connecting piece 51, the acting force applied by the tensile testing machine is converted into cross tensile force of the cross sample piece 7, and stress-strain measurement of the cross sample piece 7 is completed.
Furthermore, four hinge seats 62 are uniformly distributed on the outer side of the pressure member 6 along the circumferential direction of the pressure member 6, and the four hinge seats 62 are respectively hinged with the first connecting piece 23, the second connecting piece 31, the third connecting piece 41 and the fourth connecting piece 51 in a one-to-one correspondence manner. Through the arrangement, the difficulty of hinging the pressure piece 6 with the first clamping assembly and the second clamping assembly is reduced. In this embodiment, the pressure member 6 and the four hinge seats 62 are of a split structure, and the pressure member 6 and the four hinge seats 62 are all connected by bolts, in other embodiments, the pressure member 6 and the four hinge seats 62 may also be of an integrated structure, so as to reduce the installation process, which is not limited herein.
Further, the first clamping block 2 comprises a first sliding block portion 21 and a first fixing portion 22 which are connected with each other, the first sliding block portion 21 is slidably disposed on the fixed base 1, the first fixing portion 22 is hinged to the first connecting piece 23, and one end of the cross sample piece 7 is clamped between the first sliding block portion 21 and the first fixing portion 22. Specifically, the first fixing portion 22 and the first slider portion 21 are fixedly connected by a bolt. Through the arrangement, the cross-shaped sample piece 7 is convenient to fix. In this embodiment, the second clamping block 3, the third clamping block 4, and the fourth clamping block 5 have the same structure as the first clamping block 2, and are not described in detail herein.
Furthermore, a first slide rail 11 and a second slide rail 12 are arranged on the fixed base 1, the first clamping component is arranged on the first slide rail 11, and the second clamping component is arranged on the second slide rail 12 in a sliding manner. In this embodiment, the cross-sections of the first slide rail 11 and the second slide rail 12 are both T-shaped, the first clamping assembly is clamped on the first slide rail 11, and the second clamping assembly is clamped on the second slide rail 12, so that the first clamping assembly can only slide along the length direction of the first slide rail 11, and the second clamping assembly can only slide along the length direction of the second slide rail 12. The stability of the cross stretching of the cross sample piece 7 is ensured.
In other embodiments, the fixed base 1 may also be provided with a first sliding groove and a second sliding groove, the first clamping assembly is slidably disposed in the first sliding groove, and the second clamping assembly is slidably disposed in the second sliding groove.
Furthermore, a plurality of rollers 14 are uniformly distributed on the upper end surface of the first slide rail 11 and the upper end surface of the second slide rail 12. When the pressure piece 6 drives the first clamping assembly and the second clamping assembly to slide along the first slide rail 11 and the second slide rail 12 respectively, the friction force between the first clamping assembly and the first slide rail 11 is reduced, and meanwhile, the friction force between the second clamping assembly and the second slide rail 12 is reduced. The influence of the friction force on the tensile force applied to the cross-shaped sample piece 7 is reduced, so that the accuracy of the test result is improved.
Further, the roller 14 is coated with grease. By arranging the lubricating grease, the friction of the roller 14 can be further reduced, thereby ensuring the accuracy of the test result of the cross-shaped sample piece 7,
further, the pressure member 6 has a hemispherical structure, and the upper end surface thereof is provided with a clamp joint 61. The pressure piece 6 adopts a hemispherical structure, and can ensure that the forces exerted on the four hinge seats 62 are stable and consistent in size, so that the tensile test of the cross-shaped sample piece 7 is ensured to be smoothly carried out; be provided with anchor clamps joint 61 on pressure 6, be convenient for pressure 6 and tensile testing machine can dock fast.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. 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. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A tensile stress strain clamping device is characterized by comprising:
the fixed base (1) is fixedly arranged on a supporting seat of the tensile testing machine;
the clamping device comprises a first clamping assembly and a second clamping assembly, wherein the first clamping assembly and the second clamping assembly are arranged in a cross manner and are arranged on the upper end face of the fixed base (1) in a sliding manner, and a cross sample piece (7) attached with a strain gauge is clamped between the first clamping assembly and the second clamping assembly;
the pressure piece (6) is positioned right above the center of the connecting line of the first clamping component and the second clamping component and is connected with an upper end joint of the tensile testing machine, the pressure piece (6) is hinged with both the first clamping component and the second clamping component, and the pressure piece (6) can drive the first clamping component and the second clamping component to stretch the cross sample piece (7) under the driving of the tensile testing machine;
and one end of the cooling pipe is communicated with a cooling medium storage, and the other end of the cooling pipe is arranged at the central position of the cross sample piece (7) and is used for cooling the cross sample piece (7).
2. The tensile stress strain clamping device according to claim 1, wherein the first clamping assembly comprises a first clamping block (2) and a second clamping block (3) which are arranged at intervals, the first clamping block (2) and the second clamping block (3) are arranged on the fixed base (1) in a sliding mode, a first connecting piece (23) is hinged to the first clamping block (2), one end, far away from the first clamping block (2), of the first connecting piece (23) is hinged to the pressure piece (6), a second connecting piece (31) is hinged to the second clamping block (3), and one end, far away from the second clamping block (3), of the second connecting piece (31) is hinged to the pressure piece (6).
3. The clamping device for tensile stress strain according to claim 2, wherein the first clamping block (2) comprises a first sliding block part (21) and a first fixing part (22) which are connected with each other, the first sliding block part (21) is arranged on the fixed base (1) in a sliding mode, the first fixing part (22) is hinged with the first connecting piece (23), and one end of the cross sample piece (7) is clamped between the first sliding block part (21) and the first fixing part (22).
4. The clamping device for the tensile stress and strain according to claim 1, wherein a first sliding rail (11) and a second sliding rail (12) are arranged on the fixed base (1), the first clamping component is arranged on the first sliding rail (11), and the second clamping component is arranged on the second sliding rail (12) in a sliding manner.
5. The clamping device for tensile stress strain according to claim 4, wherein a plurality of rollers (14) are uniformly distributed on the upper end surface of the first slide rail (11) and the upper end surface of the second slide rail (12).
6. A tensile stress strain clamping device according to claim 5, wherein the rollers (14) are coated with grease.
7. The tensile stress strain clamping device according to claim 2, wherein the second clamping assembly comprises a third clamping block (4) and a fourth clamping block (5) which are arranged at intervals, the third clamping block (4) and the fourth clamping block (5) are arranged on the fixed base (1) in a sliding mode, a third connecting piece (41) is hinged to the third clamping block (4), one end, far away from the third clamping block (4), of the third connecting piece (41) is hinged to the pressure piece (6), a fourth connecting piece (51) is hinged to the fourth clamping block (5), and one end, far away from the fourth clamping block (5), of the fourth connecting piece (51) is hinged to the pressure piece (6).
8. The clamping device for the tensile stress strain according to claim 7, wherein four hinge seats (62) are uniformly distributed on the outer side of the pressure piece (6) along the circumferential direction of the pressure piece (6), and the four hinge seats (62) are respectively hinged with the first connecting piece (23), the second connecting piece (31), the third connecting piece (41) and the fourth connecting piece (51) in a one-to-one correspondence manner.
9. A tensile stress strain clamping device according to claim 1, wherein the pressure member (6) is of a hemispherical structure, and a clamp joint (61) is arranged on the upper end surface of the pressure member.
10. The clamping device for the tensile stress and strain as set forth in claim 1, wherein the fixing base (1) is provided with a through hole (13), and the cooling pipe is inserted into the through hole (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022342272.3U CN213456385U (en) | 2020-10-20 | 2020-10-20 | Tensile stress strain clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022342272.3U CN213456385U (en) | 2020-10-20 | 2020-10-20 | Tensile stress strain clamping device |
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| Publication Number | Publication Date |
|---|---|
| CN213456385U true CN213456385U (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022342272.3U Active CN213456385U (en) | 2020-10-20 | 2020-10-20 | Tensile stress strain clamping device |
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| Country | Link |
|---|---|
| CN (1) | CN213456385U (en) |
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- 2020-10-20 CN CN202022342272.3U patent/CN213456385U/en active Active
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