CN216247494U - Clamping device suitable for long-term test under high temperature - Google Patents
Clamping device suitable for long-term test under high temperature Download PDFInfo
- Publication number
- CN216247494U CN216247494U CN202122432772.0U CN202122432772U CN216247494U CN 216247494 U CN216247494 U CN 216247494U CN 202122432772 U CN202122432772 U CN 202122432772U CN 216247494 U CN216247494 U CN 216247494U
- Authority
- CN
- China
- Prior art keywords
- conical column
- conical
- long
- sample
- device suitable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model provides a clamping device suitable for a long-time test at high temperature, which comprises two sample fastening clamps which have the same structure and are arranged in an up-down symmetrical mode, wherein each fastening clamp comprises a clamping piece and a clamping block which are oppositely arranged to fit into a conical column, a positioning groove with internal threads is formed in the center of a small-diameter opening of the conical column and is clamped in a conical hole of a sleeve, a hanging joint is welded in the center of a large-diameter opening of the conical column, and the hanging joint and the conical column are integrally formed. The device is simple in structure, convenient to operate, convenient to install and detach between the sample and the clamp, and capable of improving the test rate of the sample and the utilization rate of the clamp.
Description
Technical Field
The utility model belongs to the technical field of material detection, and particularly relates to a clamping device suitable for a long-time test at a high temperature.
Background
In recent years, with the continuous development of the fields of aerospace, petroleum, chemical engineering, nuclear power and the like, high-temperature materials are more and more widely applied. As is known to all, the high-temperature performance of the material is an important measurement index for ensuring that the material can normally work under severe working conditions, so that the research on the high-temperature mechanical property of the high-temperature alloy material is very important. At present, the high-temperature mechanical property of the wire is researched by mainly adopting a high-temperature tensile test fixture to open a hole to fix a wire sample, and the high-temperature tensile test machine is used for detecting the tensile property of the wire sample on the fixture.
However, once the clamp and the sample exceed the vacuum sealing range under high temperature for a long time, the clamp and the wire sample can be seriously oxidized when being continuously tested, so that the clamp and the sample are damaged, and the sample cannot be disassembled. Or after the high-temperature tensile test is finished, the wire material sample clamped by the clamp cannot be detached, so that the clamp is finally scrapped or the internal thread of the clamp cannot be used continuously due to damage, the utilization rate of the clamp is reduced, and the difficulty in sample analysis is increased.
Disclosure of Invention
The utility model aims to provide a clamping device which is simple in structure, convenient to operate and suitable for long-time tests at high temperature.
In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model relates to a clamping device suitable for a long-time test at high temperature, which comprises two sample fastening clamps which have the same structure and are arranged in an up-and-down symmetrical manner, and is characterized in that: the fastening clamp comprises a clamping piece and a clamping block which are oppositely matched to form a conical column, a positioning groove with internal threads is formed in the center of a small-diameter opening of the conical column and is clamped in a conical hole of a sleeve, a hanging joint is welded in the center of a large-diameter opening of the conical column, and the hanging joint and the conical column are integrally formed.
Furthermore, the semi-cone clamping block is cut out from the small-diameter opening of the conical column along the diameter, a cavity for placing the clamping block is arranged at the position corresponding to the clamping piece, and the length of the clamping block is smaller than that of the positioning groove.
Further, the shape of the positioning groove is the same as that of the end part of the wire sample, and the diameter of the positioning groove is equal to that of the wire sample.
Furthermore, the small-diameter opening of the conical column is provided with an external thread, the conical hole of the sleeve is provided with an internal thread, the conical column and the sleeve are connected through the threads to fasten a wire material sample in the positioning groove, and the end face of the small-diameter opening of the conical column is flush with the end face of the sleeve.
Further, the taper design angle range of the conical cylinder is 5-15 degrees.
Furthermore, the hanging joint of the large-diameter opening of the conical column is a cylinder, and the outer wall of the hanging joint is provided with an external thread connected with the internal thread of the high-temperature testing machine.
Compared with the prior art, the clamping device suitable for the long-term test at high temperature has the beneficial effects that:
the clamping blocks of the fastening clamp can be arranged in the cavity of the clamping piece, and the fastening clamp has adjustability, is not only favorable for mounting and dismounting a wire material sample, but also has the advantages that the larger the extrusion force applied by the conical column formed by combining the two clamping blocks by the conical hole of the sleeve is, the larger the clamping force on the wire material sample is, and the position of the wire material sample can be accurately fixed. Because the constant head tank diameter of circular cone post equals the diameter of silk material, when experimental, on the basis of keeping the clamping-force, there is not the space in the constant head tank to let the air get into, effectively avoids the oxidation of high temperature to anchor clamps and silk material sample, improves the utilization ratio of sample and anchor clamps. Meanwhile, the hanging connector is fixed on the high-temperature tensile test fixture in a threaded fit mode, and smooth performance of a high-temperature alloy wire tensile test is guaranteed.
The device is simple in structure, convenient to operate, convenient to install and detach between the sample and the clamp, and capable of improving the test rate of the sample and the utilization rate of the clamp.
Drawings
FIG. 1 is a longitudinal cross-sectional view of the assembly of the present invention in operation;
FIG. 2 is a front view of the fastening clip of the present invention;
FIG. 3 is a top view of the fastening clip of the present invention;
FIG. 4 is an exploded view of the fastening clip of the present invention;
FIG. 5 is a schematic longitudinal cross-sectional view of the sleeve of the present invention;
in the figure: a holder 1; a clamping block 2; a positioning groove 3; hanging a connector 4; a sleeve 5; a conical bore 6; wire sample 7.
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1-5, the clamping device suitable for the long-term test at high temperature of the utility model comprises two sample fastening clamps which have the same structure and are arranged symmetrically up and down, each fastening clamp comprises a clamping piece 1 and a clamping block 2 which are matched with each other in an opposite manner to form a conical column, a positioning groove 3 with internal threads is arranged in the center of a small-diameter opening of the conical column, a semi-cone clamping block 2 is cut from the small-diameter opening of the conical column along the diameter, a cavity for placing the clamping block 2 is arranged at a position corresponding to the clamping piece 1, the small-diameter opening of the conical column is in threaded connection with a conical hole 6 of a sleeve 5, the end surface of the small-diameter opening of the conical column is flush with the end surface of the sleeve 5, and the optimal length of the external threads of the small-diameter opening of the conical column is 15 cm. The shape of the positioning groove 3 is the same as that of the end of the wire sample 7. Because the extrusion force that the conical bore 6 of sleeve 5 applyed to the conical column is big more, just big to the clamping-force of silk material sample 7, can the position of accurate fixed silk material sample 7, because the constant head tank 3 diameter of conical column equals the diameter of silk material sample 7, when experimental, on the basis of keeping the clamping-force, do not have the space in the constant head tank and let the air get into, effectively avoid the high temperature to the oxidation of anchor clamps and silk material sample 7, improve the utilization ratio of silk material sample 7 and anchor clamps. The optimal length of the positioning groove 3 is 20 cm, and the length of the clamping block 2 is less than that of the positioning groove 3.
The center of the large-diameter opening of the conical column is welded with a cylindrical hanging joint 4, the hanging joint 4 and the conical column are integrally formed, and the outer wall of the hanging joint 4 is provided with an external thread connected with the internal thread of the high-temperature testing machine.
The taper design angle range of the conical cylinder is 5-15 degrees. Set up holder 1 and grip block 2 into the circular cone post, lighter than the cylinder weight reduction when guaranteeing fastening clamp bulk strength, also save material, the easier seal installation and the rotatory dismantlement of the circular cone hole 6 of sleeve 5 moreover.
The utility model relates to a working principle of a clamping device suitable for long-term test at high temperature, which comprises the following steps:
as shown in figure 1, before a fastening device detects the high-temperature tensile property of a wire sample 7, two ends of the wire sample 7 are respectively inserted into the notches of the upper clamping piece 1 and the lower clamping piece 1, the clamping block 2 is arranged in the cavity of the clamping piece 1, the notch of the clamping block 2 is attached to the wire sample 7, as the clamping block 2 is one part of a conical column, larger pressure can be generated on the wire sample 7, then the sleeve 5 is screwed with the small diameter opening of the conical column, the end part of the wire sample 7 can be tightly attached, and therefore the stabilizing effect on the wire sample 7 is further guaranteed. When the high-temperature tensile property is detected, the high-temperature tensile testing machine is connected with the hanging connector 4, so that the tensile test of the high-temperature alloy wire is smoothly carried out.
Because two hitching heads 4 are opposite to the experimental device, and the screw rod sample 7 and the hitching heads 4 are positioned on the coaxial central line and are symmetrically distributed up and down, the fastening device and the wire material sample 7 in the stretching detection process can be always kept in the coaxial state, and the stability of the whole device is improved.
The device for the test is made of high-temperature alloy steel which has high-temperature resistance and is stable and does not deform at high temperature for a long time.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the spirit of the present invention, and these modifications and improvements should also be considered as within the scope of the present invention.
Claims (6)
1. The utility model provides a clamping device suitable for long term test under high temperature, includes the sample fastening jig that two structures are the same and the longitudinal symmetry sets up, its characterized in that: the fastening clamp comprises a clamping piece and a clamping block which are oppositely matched to form a conical column, a positioning groove with internal threads is formed in the center of a small-diameter opening of the conical column and is clamped in a conical hole of a sleeve, a hanging joint is welded in the center of a large-diameter opening of the conical column, and the hanging joint and the conical column are integrally formed.
2. A clamping device suitable for long-term testing at high temperatures according to claim 1, wherein: the semi-cone clamping block is cut out of the small-diameter opening of the conical column along the diameter, a cavity for placing the clamping block is formed in the position corresponding to the clamping piece, and the length of the clamping block is smaller than that of the positioning groove.
3. A clamping device suitable for long-term tests at high temperatures according to claim 2, characterized in that: the shape of the positioning groove is the same as that of the end part of the wire sample, and the diameter of the positioning groove is equal to that of the wire sample.
4. A holding device suitable for long-term tests at high temperatures according to any of claims 1 to 3, characterized in that: the small-diameter opening of the conical column is provided with an external thread, the conical hole of the sleeve is provided with an internal thread, the conical column and the sleeve are connected through the threads to fasten a wire material sample in the positioning groove, and the end face of the small-diameter opening of the conical column is flush with the end face of the sleeve.
5. A clamping device suitable for long-term test at high temperature according to claim 4, characterized in that: the taper design angle range of the conical cylinder is 5-15 degrees.
6. A clamping device suitable for long-term testing at high temperatures according to claim 1, wherein: the hanging joint of the large-diameter opening of the conical column is a cylinder, and the outer wall of the hanging joint is provided with external threads matched with the threads of the high-temperature testing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122432772.0U CN216247494U (en) | 2021-10-09 | 2021-10-09 | Clamping device suitable for long-term test under high temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122432772.0U CN216247494U (en) | 2021-10-09 | 2021-10-09 | Clamping device suitable for long-term test under high temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216247494U true CN216247494U (en) | 2022-04-08 |
Family
ID=80986914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122432772.0U Active CN216247494U (en) | 2021-10-09 | 2021-10-09 | Clamping device suitable for long-term test under high temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216247494U (en) |
-
2021
- 2021-10-09 CN CN202122432772.0U patent/CN216247494U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202221394U (en) | Multifunctional tensile test fixture | |
| CN102841011A (en) | Test fixture for testing low-temperature mechanical tensile property of fiber reinforced composite material | |
| CN202735158U (en) | Tensile strength detecting clamp of double thread screw | |
| CN202735159U (en) | Detecting clamp for high strength bolt fastener load-guarantee | |
| CN104931342A (en) | Multifunctional high-temperature stretching clamp | |
| CN216247494U (en) | Clamping device suitable for long-term test under high temperature | |
| CN103528884A (en) | Sample clamping device for low-temperature tensile property test | |
| CN202974758U (en) | Combination fixture for measuring tensile strength of bolt | |
| CN202735160U (en) | Tensile strength detecting clamp of high strength bolt | |
| CN205352833U (en) | Bolt tensile test universal fixturing | |
| CN115901433A (en) | Thin-wall circular tube sample fatigue test fixture and automatic centering and clamping method | |
| CN203479610U (en) | Clamping structure of tension test | |
| CN201535737U (en) | Cylindrical threaded clamp | |
| CN212674623U (en) | Load loading device for steel constant-load delayed fracture test | |
| CN210954120U (en) | Diode electrical property detection device | |
| CN220568543U (en) | High-temperature stretching clamp for high-temperature alloy ultrathin material | |
| CN216869626U (en) | Smooth dotting detection tool for pipeline | |
| CN204705541U (en) | A kind of multifunctional high-temperature stretching clamp | |
| CN207570904U (en) | A kind of steel plate stretching test fixture | |
| CN212379163U (en) | Combined tool for detecting H-shaped cylindrical embedded part in drawing test | |
| CN208520557U (en) | One kind can be used for more diameter lag bolt tensile strength detection clamps | |
| CN217452483U (en) | Pipe anchor clamps on wire cutting machine | |
| CN110044720A (en) | A kind of multi-functional clamp suitable for nonstandard small sample creep performance test | |
| CN215677876U (en) | Tensile detection instrument of bolt | |
| CN201368826Y (en) | Wire rod stretching clamp for material testing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |