CN211697236U - High-efficient high-temperature stretching clamping device - Google Patents
High-efficient high-temperature stretching clamping device Download PDFInfo
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- CN211697236U CN211697236U CN201922246172.8U CN201922246172U CN211697236U CN 211697236 U CN211697236 U CN 211697236U CN 201922246172 U CN201922246172 U CN 201922246172U CN 211697236 U CN211697236 U CN 211697236U
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Abstract
The utility model relates to a tensile clamping device of high-efficient high temperature belongs to testing machine and precision instrument technical field. Contain anchor clamps, lower anchor clamps and centre gripping subassembly and constitute, wherein go up anchor clamps and be connected with high temperature tensile test device (external equipment) through universal joint I, universal joint II respectively with lower anchor clamps, the centre gripping subassembly is connected with last fluting chuck, lower fluting chuck through last ball pivot I, lower ball pivot I respectively. The clamping assembly comprises a rod-shaped sample clamping assembly and a plate-shaped sample clamping assembly, and can clamp plate-shaped and rod-shaped samples of various materials and sizes. Has the advantages that: simple structure, sample clamping convenience, centering nature are good, and this device can ensure many samples parallel test, has improved test efficiency greatly, provides technical guarantee for fields such as aerospace, automobile manufacturing and national defense military project key structure material high temperature mechanical properties test.
Description
Technical Field
The utility model relates to a testing machine and precision instrument technical field, in particular to tensile clamping device of high-efficient high temperature. The device can once centre gripping many samples at the test in-process, has improved experimental efficiency greatly. The method provides technical support for testing the high-temperature mechanical property of the key structural material in the fields of aerospace, automobile manufacturing, national defense, military industry and the like.
Background
With the continuous development of science and technology, the requirement of mechanical property test of key structural materials in various fields is increasing day by day. In the fields of aerospace, automobile manufacturing, national defense war industry and the like, certain key structures such as blades of an aircraft engine, automobile crankshafts, skins of aircraft rockets and the like are often subjected to the coupling action of high temperature and mechanical load, so that failure damage caused by the coupling action of high temperature and mechanical load occurs occasionally, great loss is brought to national economy, and the root of the failure damage is that the deformation damage and the failure damage mechanism of key materials under the coupling action of high temperature and mechanical load are not understood clearly. Therefore, the performance test of the simulation material under the actual service working condition is significant.
The development of high-temperature tensile test is the most direct method for obtaining the deformation damage and failure mechanism of the material under the coupling action of high temperature and mechanical load. To high temperature tensile test, numerous scholars at home and abroad have developed a large amount of research, have developed numerous testing arrangement and sample clamping device, patent CN201510344645.1 of the invention proposes a high temperature tensile anchor clamps, can realize sample quick centre gripping and take out, utility model patent CN201320116368.5 proposes a plate sample high temperature tensile anchor clamps, has realized the accurate centering of plate sample, utility model patent CN201820032001.8 proposes a high temperature tensile anchor clamps of bar sample, has solved the problem that the sample warp bonding anchor clamps under the high temperature. The sample clamping device can effectively carry out high-temperature tensile test on materials, and test precision is guaranteed. However, the method has the disadvantages that only one sample can be tested at a time in the test process, so that the test time is long, the energy utilization rate is low, and the test efficiency is low. How to improve the efficiency of the high-temperature tensile test and ensure the test precision is a problem to be solved urgently.
Disclosure of Invention
An object of the utility model is to provide a tensile clamping device of high-efficient high temperature has solved the above-mentioned problem that prior art exists, satisfies the major demand of material mechanical properties test under the national high temperature environment, provides technical guarantee for fields key structure material high temperature mechanical properties tests such as aerospace, automobile manufacturing and national defense military project. The utility model discloses simple structure, sample clamping make things convenient for, good to the neutrality, and this device can ensure many parallel tests of sample, has improved test efficiency greatly, provides technical guarantee for fields key structural material high temperature mechanical properties tests such as aerospace, automobile manufacturing and national defense military project.
The above object of the utility model is realized through following technical scheme:
the high-efficiency high-temperature tensile clamping device comprises an upper clamp 1, a lower clamp 2 and a clamping assembly 3, wherein the upper clamp 1 and the lower clamp 2 are respectively connected with a high-temperature tensile testing device through a universal joint I105 and a universal joint II 203, and the integral centering of the clamping device in the testing process is realized; the clamping component 3 is respectively connected with the upper slotting chuck 103 of the upper clamp 1 and the lower slotting chuck 201 of the lower clamp 2 through an upper spherical hinge I30101 and a lower spherical hinge I30103, and automatic centering in the test process of each sample is realized.
The clamping component 3 comprises a rod-shaped sample clamping component 301 and a plate-shaped sample clamping component 302 which can be replaced, wherein the rod-shaped sample 30102 of the rod-shaped sample clamping component 301 is in rigid connection with internal threads of an upper thread chuck I30105 and a lower thread chuck I30104 through external threads at the end parts, the external cylindrical surface of the upper thread chuck I30105 is matched with the internal cylindrical surface of an upper spherical hinge I30101, and the external cylindrical surface of the lower thread chuck I30104 is matched with the internal cylindrical surface of a lower spherical hinge I30103; the upper end of a plate-shaped sample 30203 of the plate-shaped sample clamping assembly 302 is rigidly connected with an upper plate-shaped chuck 30202 through a bolt 30208 and a nut 30207, the lower end of the plate-shaped sample clamping assembly is rigidly connected with a lower plate-shaped chuck 30204 through a bolt 30208 and a nut 30207, the upper plate-shaped chuck 30202 is in threaded connection with an upper threaded chuck II 30209, the lower plate-shaped chuck 30204 is in threaded connection with a lower threaded chuck II 30205, the outer cylindrical surface of the upper threaded chuck 30209 II is matched with the inner cylindrical surface of an upper spherical hinge II 30201, the outer cylindrical surface of the lower threaded chuck II 30205 is matched with the inner cylindrical surface of a lower spherical hinge II 30206, the upper spherical hinge II 30201 is matched with the upper slotted chuck 103 through a spherical surface; the rod-like sample holding means 301 and the plate-like sample holding means 302 are used interchangeably, and firmly hold plate-like and rod-like samples of various materials and sizes.
The upper clamp 1 comprises a universal joint I105, an upper clamping plate 101, a force sensor 102, a high-temperature connecting rod I104 and an upper slotting chuck 103, the upper end of the upper clamping plate 101 is locked with the universal joint I105, the lower end of the upper clamping plate is connected with the force sensor 102 through a stud, the upper end of the high-temperature connecting rod I104 is in threaded connection with the force sensor 102, and the lower end of the high-temperature connecting rod I104 is in threaded connection with the upper slotting chuck 103.
The lower clamp 2 comprises a universal joint II 203, a lower clamping plate 202, a high-temperature connecting rod II 204 and a lower grooving clamping head 201, the lower end of the lower clamping plate 202 is locked with the universal joint II 203, the upper end of the lower clamping plate is in threaded connection with the high-temperature connecting rod II 204, and the upper end of the high-temperature connecting rod II 204 is in threaded connection with the lower grooving clamping head 201.
The beneficial effects of the utility model reside in that: the utility model discloses a device contains anchor clamps, lower anchor clamps and centre gripping subassembly and constitutes, wherein goes up anchor clamps and is connected with high temperature tensile test device (external equipment) through universal joint I, universal joint II respectively with lower anchor clamps, and the centre gripping subassembly is connected with last fluting chuck, lower fluting chuck through last ball pivot I, lower ball pivot I respectively. The clamping assembly comprises a rod-shaped sample clamping assembly and a plate-shaped sample clamping assembly, and can clamp plate-shaped and rod-shaped samples of various materials and sizes. The utility model discloses simple structure, sample clamping make things convenient for, good to the neutrality, and this device can ensure many parallel tests of sample, has improved test efficiency greatly, provides technical guarantee for fields key structural material high temperature mechanical properties tests such as aerospace, automobile manufacturing and national defense military project.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate example embodiments of the invention and together with the description serve to explain the invention without limitation.
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural view of the upper clamp of the present invention;
fig. 3 is a schematic structural view of the lower clamp of the present invention;
fig. 4 is a schematic structural view of the clamping assembly of the present invention;
FIG. 5 is a schematic view of a rod-shaped sample holding assembly according to the present invention;
FIG. 6 is a schematic view of a plate sample clamping assembly according to the present invention;
FIG. 7 is a partial schematic view of the fitting portion between the spherical hinge and the slotted chuck according to the present invention;
fig. 8 is a schematic view of the installation of the rod-like sample holding unit according to the present invention.
In the figure: 1. an upper clamp; 2. a lower clamp; 3. a clamping assembly; 101. an upper clamping plate; 102. a force sensor; 103. an upper slotting chuck; 104. a high-temperature connecting rod I; 105. a universal joint I; 201. a lower grooving clamping head; 202. a lower clamping plate; 203. a universal joint II; 204. a high-temperature connecting rod II; 301. a rod-like sample holding member; 302. a plate-like sample holding assembly; 30101. a spherical hinge I is arranged; 30102. a rod-like sample; 30103. a lower spherical hinge I; 30104. a lower thread chuck I; 30105. an upper thread chuck I; 30201. an upper spherical hinge II; 30202. an upper plate-shaped chuck; 30203. a plate-like sample; 30204. a lower plate-shaped chuck; 30205. a lower thread chuck II; 30206. a lower spherical hinge II; 30207. a nut; 30208. a bolt; 30209. and (4) an upper thread chuck II.
Detailed Description
The details of the present invention and its embodiments are further described below with reference to the accompanying drawings.
Referring to fig. 1 to 8, the high-efficiency high-temperature tensile clamping device of the present invention comprises an upper clamp 1, a lower clamp 2 and a clamping assembly 3, wherein the upper clamp 1 and the lower clamp 2 are respectively connected with a high-temperature tensile testing device (external device) through a universal joint i 105 and a universal joint ii 203, and the overall centering of the clamping device in the testing process is realized; the clamping component 3 is respectively connected with the upper slotting chuck 103 of the upper clamp 1 and the lower slotting chuck 201 of the lower clamp 2 through an upper spherical hinge I30101 and a lower spherical hinge I30103, and automatic centering in the test process of each sample is realized. The ball hinge material is made of high-temperature alloy with small thermal expansion coefficient, high temperature resistance and good wear resistance.
Referring to fig. 4 to 6, the clamping assembly 3 comprises a rod-shaped sample clamping assembly 301 and a plate-shaped sample clamping assembly 302 which can be replaced, wherein the rod-shaped sample clamping assembly 301 comprises an upper threaded chuck i 30105, a lower threaded chuck i 30104, an upper spherical hinge i 30101, a lower spherical hinge i 30103 and a rod-shaped sample 30102, the rod-shaped sample 30102 is rigidly connected with the upper threaded chuck i 30105 and the lower threaded chuck i 30104 through the matching of external threads at the end parts with internal threads of the upper threaded chuck i 30105 and the lower threaded chuck i 30104, the external cylindrical surface of the upper threaded chuck i 30105 is matched with the internal cylindrical surface of the upper spherical hinge i 30101, and the external cylindrical surface of the lower threaded chuck i 30104 is matched with the internal; the plate specimen clamping assembly 302 comprises an upper screw chuck II 30209, a lower screw chuck II 30205, an upper spherical hinge II 30201, a lower spherical hinge II 30206, an upper plate chuck 30202, a lower plate chuck 30204, a bolt 30208, a nut 30207, and a plate specimen 30203, wherein the upper end of the plate specimen 30203 is rigidly connected to the upper plate chuck 30202 via a bolt 30208 and a nut 30207, the lower end of the plate specimen 30204 is rigidly connected to the lower plate chuck 30204 via a bolt 30208 and a nut 30207, the upper plate chuck 30202 is threadedly connected to the upper screw chuck II 30209, the lower plate chuck 30204 is threadedly connected to the lower screw chuck II 30205, the outer cylindrical surface of the upper screw chuck 30209 II is fitted to the inner cylindrical surface of the upper spherical hinge 30201, the outer cylindrical surface of the lower screw chuck II 30205 is fitted to the inner cylindrical surface of the lower spherical hinge II 30206, the upper spherical hinge II 30201 is fitted to the upper slotted chuck 103 via a spherical surface, and the lower spherical hinge II; the rod-like sample holding means 301 and the plate-like sample holding means 302 are used interchangeably, and firmly hold plate-like and rod-like samples of various materials and sizes.
Referring to fig. 2, the upper clamp 1 comprises a universal joint i 105, an upper clamping plate 101, a force sensor 102, a high-temperature connecting rod i 104 and an upper slotted clamp 103, wherein the upper end of the upper clamping plate 101 is locked with the universal joint i 105, the lower end of the upper clamping plate is connected with the force sensor 102 through a stud, the upper end of the high-temperature connecting rod i 104 is in threaded connection with the force sensor 102, and the lower end of the high-temperature connecting rod i 104 is in threaded connection with the upper slotted clamp 103.
Referring to fig. 3, the lower clamp 2 comprises a universal joint ii 203, a lower clamping plate 202, a high-temperature connecting rod ii 204 and a lower slotting clamp 201, wherein the lower end of the lower clamping plate 202 is locked with the universal joint ii 203, the upper end of the lower clamping plate is in threaded connection with the high-temperature connecting rod ii 204, and the upper end of the high-temperature connecting rod ii 204 is in threaded connection with the lower slotting clamp 201.
Referring to fig. 1 to 8, the specific process of the present invention when performing the high temperature tensile test on the bar-shaped sample is as follows:
and (3) mounting a clamp: an upper clamp 1 and a lower clamp 2 are respectively arranged at the upper end and the lower end of a universal tester (external equipment) through a universal joint I105 and a universal joint II 203;
and (3) installing a clamping assembly: installing an upper thread chuck 30105 and an upper spherical hinge I30101 of a rod-shaped sample clamping assembly 301, installing a lower thread chuck I30104 and a lower spherical hinge I30103 of the rod-shaped sample clamping assembly 301, then respectively connecting two ends of the rod-shaped sample 30102 sprayed with high-temperature speckles with the upper thread chuck I30105 and the lower thread chuck I30104 in a threaded manner, and connecting the rod-shaped sample clamping assembly 301 with an upper slotting chuck 103 of an upper clamp 1 and a lower slotting chuck 201 of a lower clamp 2 through the upper spherical hinge I30101 and the lower spherical hinge I30103 to complete installation of the rod-shaped sample clamping assembly 301;
starting the high-temperature non-contact strain gauge: starting the high-temperature non-contact strain measuring instrument, and carrying out high-temperature strain measurement on the four rod-shaped samples 30102;
loading a high-temperature tensile load: starting high-temperature loading equipment (external equipment), heating to a specified temperature, and keeping the temperature for 10 min; starting a static tensile loading unit of a universal testing machine (external equipment), and performing static tensile loading on a tested sample by adopting displacement control so as to finish the loading of a high-temperature tensile load; and obtaining a stress-strain curve of each sample through subsequent data processing according to a real force value measured by the force sensor 102 and a strain value measured by the high-temperature non-contact strain measuring instrument.
The above description is only a preferred example of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made to the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a tensile clamping device of high-efficient high temperature which characterized in that: the device comprises an upper clamp (1), a lower clamp (2) and a clamping assembly (3), wherein the upper clamp (1) and the lower clamp (2) are respectively connected with a high-temperature tensile testing device through a universal joint I (105) and a universal joint II (203), and the integral centering of the clamping device in the test process is realized; the clamping component (3) is connected with the upper slotting chuck (103) of the upper clamp (1) and the lower slotting chuck (201) of the lower clamp (2) through the upper spherical hinge I (30101) and the lower spherical hinge I (30103) respectively, and automatic centering in the test process of each sample is achieved.
2. The high efficiency high temperature tensile clamping apparatus of claim 1, wherein: the clamping assembly (3) comprises a rod-shaped sample clamping assembly (301) and a plate-shaped sample clamping assembly (302) which can be replaced, wherein a rod-shaped sample (30102) of the rod-shaped sample clamping assembly (301) is in rigid connection with internal threads of an upper threaded chuck I (30105) and a lower threaded chuck I (30104) through external threads at the end parts, the external cylindrical surface of the upper threaded chuck I (30105) is matched with the internal cylindrical surface of an upper spherical hinge I (30101), and the external cylindrical surface of the lower threaded chuck I (30104) is matched with the internal cylindrical surface of a lower spherical hinge I (30103); the upper end of a plate-shaped sample (30203) of the plate-shaped sample clamping assembly (302) is rigidly connected with an upper plate-shaped chuck (30202) through a bolt (30208) and a nut (30207), the lower end of the plate-shaped sample clamping assembly is rigidly connected with a lower plate-shaped chuck (30204) through a bolt (30208) and a nut (30207), the upper plate-shaped chuck (30202) is in threaded connection with an upper threaded chuck II (30209), the lower plate-shaped chuck (30204) is in threaded connection with a lower threaded chuck II (30205), the outer cylindrical surface of the upper threaded chuck II (30209) is matched with the inner cylindrical surface of an upper spherical hinge II (30201), the outer cylindrical surface of the lower threaded chuck II (30205) is matched with the inner cylindrical surface of a lower spherical hinge II (30206), the upper spherical hinge II (30201) is matched with an upper slotted chuck (103) through a spherical surface, and the lower spherical hinge II (30206); the rod-shaped sample clamping assembly (301) and the plate-shaped sample clamping assembly (302) are mutually replaced and used, so that the plate-shaped and rod-shaped samples of different materials and sizes can be firmly clamped.
3. The high efficiency high temperature tensile clamping apparatus of claim 1, wherein: go up anchor clamps (1) include universal joint I (105), go up grip block (101), force sensor (102), high temperature connecting rod I (104), go up fluting chuck (103), go up grip block (101) upper end and I (105) locking of universal joint, the lower extreme passes through stud and links to each other with force sensor (102), high temperature connecting rod I (104) upper end and force sensor (102) threaded connection, lower extreme and last fluting chuck (103) threaded connection.
4. The high efficiency high temperature tensile clamping apparatus of claim 1, wherein: lower anchor clamps (2) include universal joint II (203), lower grip block (202), high temperature connecting rod II (204), lower fluting chuck (201), grip block (202) lower extreme and universal joint II (203) locking down, upper end and high temperature connecting rod II (204) threaded connection, high temperature connecting rod II (204) upper end and lower fluting chuck (201) threaded connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922246172.8U CN211697236U (en) | 2019-12-16 | 2019-12-16 | High-efficient high-temperature stretching clamping device |
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| CN201922246172.8U CN211697236U (en) | 2019-12-16 | 2019-12-16 | High-efficient high-temperature stretching clamping device |
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| CN211697236U true CN211697236U (en) | 2020-10-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111060390A (en) * | 2019-12-16 | 2020-04-24 | 吉林大学 | High-efficiency high-temperature stretching clamping device and testing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111060390A (en) * | 2019-12-16 | 2020-04-24 | 吉林大学 | High-efficiency high-temperature stretching clamping device and testing method |
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