CN203037524U - Compression-resistant fixture for testing compression resistance of non-metal material - Google Patents
Compression-resistant fixture for testing compression resistance of non-metal material Download PDFInfo
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- CN203037524U CN203037524U CN 201220505725 CN201220505725U CN203037524U CN 203037524 U CN203037524 U CN 203037524U CN 201220505725 CN201220505725 CN 201220505725 CN 201220505725 U CN201220505725 U CN 201220505725U CN 203037524 U CN203037524 U CN 203037524U
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- bearing plate
- following
- anchor clamps
- position block
- holding rod
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Abstract
The utility model discloses a compression-resistant fixture for testing compression resistance of a non-metal material, and belongs to the technical field of material property testing. The compression-resistant fixture comprises an upper part and a lower part, wherein a structure of the upper part is that: an upper gripping rod is located at the upper part of an upper limiting block, and is fixedly connected with the upper limiting block; the diameter of the upper limiting block is greater than that of the upper gripping rod; and the upper limiting block is fixedly connected with an upper bearing plate; and a structure of the lower part is that: a lower gripping rod is located at the lower part of a lower limiting block, and is fixedly connected with the lower limiting block; the diameter of the lower limiting block is greater than that of the lower gripping rod; the lower limiting block is fixedly connected with a first lower bearing plate; the first lower bearing plate is connected with a second lower bearing plate through a spherical hinge; a lower bearing face is a face of the second lower bearing plate; and a scale mark used for positioning a sample is engraved on the lower bearing face. The fixture is high in testing accuracy; the bearing face is high in rigidity; the sample is accurate in placing and positioning; and a compression process and testing of the large-section non-metal material can be achieved.
Description
Technical field
The utility model belongs to the material properties test technical field, is specifically related to a kind of nonmetallic materials anti-compression properties test resistance to compression anchor clamps.
Background technology
(the Mechanical Testing ﹠amp of U.S.'s mechanical test and Analogic Corp.; Simulation MTS) be Material Testing Machine, the well-known manufacturer of dynamic state material testing machine particularly.MTS is the producer that first computer autocontrol technique of the whole world is introduced the testing machine field.Successful experience has for many years made MTS establish unshakable status in the mechanical test field.Since the eighties in last century, software engineering is widely used in the scientific research and testing territory, and MTS is again the producer that first full software-driven is introduced the testing machine field, and this measure has not only reduced the quantity of hardware, and has improved the reliability of complete machine.What is more important makes things convenient for friendly software interface, has significantly reduced the instability of personnel operation, has greatly improved reliability, repeatability and the repeatability of test figure.Now, the many well-known colleges and universities of China and enterprise have bought the MTS testing machine, are used for the test of material extending, compression and bending property.
The 647 type Wedge grippings that the MTS testing machine is supporting, as shown in Figure 1, after changing the voussoir of different model, the plane or the V-type groove that utilize voussoir to provide can be used for sheet or the cylindric sample of clamping different size.But this moment, sample thickness or the diameter of clamping were all less, and for example: 647 type Wedge grippings are behind supporting different voussoir, and the thickness of maximum grip is 25.9mm, and the diameter of maximum grip is 26.2mm, and wherein 647.25 type voussoir maximum grip diameters are 19.8mm.Therefore, as realizing that the heavy in section (is the compression test of 100 * 100mm) samples as sectional dimension, then need be equipped with independent anchor clamps.
For realizing the compression performance test to the heavy in section sample, be badly in need of resistance to compression anchor clamps a kind of and that 647.25 type voussoirs are supporting in the practice.
Do not retrieve the resistance to compression anchor clamps pertinent literature supporting with MTS company 647.25 type voussoirs.
The utility model content
At the shortcoming that above-mentioned prior art exists, the utility model proposes a kind of nonmetallic materials anti-compression properties test resistance to compression anchor clamps a kind of and that MTS testing machine 647.25 type voussoirs are supporting.
Described a kind of nonmetallic materials anti-compression properties test a kind of and that MTS testing machine 647.25 type voussoirs are supporting is as follows with the structure of resistance to compression anchor clamps:
Described anchor clamps comprise up and down two parts, and top comprises for by last holding rod 1-1, the upper limit position block 1-2 of testing machine voussoir clamping, last bearing plate 1-3 and last pressure-bearing surface 1-4.
Described upward holding rod 1-1 is positioned at the top of described upper limit position block 1-2, and the two is fixed together, and the diameter of upper limit position block 1-2 is bigger than last holding rod 1-1; Described upper limit position block 1-2 is fixedlyed connected with last bearing plate 1-3; The described pressure-bearing surface 1-4 of going up is a face going up bearing plate 1-3.
The lower part of described anchor clamps comprises for being twisted 2-5, following pressure-bearing surface 2-6 and scale mark 2-7 by following holding rod 2-1, the lower position block 2-2 of testing machine voussoir clamping, first following bearing plate 2-3, second following bearing plate 2-4, ball.
Described holding rod 2-1 down is positioned at the bottom of described lower position block 2-2, and the two is fixed together, and the diameter of lower position block 2-2 is bigger than following holding rod 2-1; Described lower position block 2-2 is fixedlyed connected with first following bearing plate 2-3; Described first following bearing plate 2-3 is connected by ball strand 2-5 with second following bearing plate 2-4; Following pressure-bearing surface 2-6 is the face of second following bearing plate 2-4, is carved with the scale mark 2-7 that locatees for sample at described pressure-bearing surface 2-6 down.
The described diameter of going up holding rod 1-1 is preferably 19mm, highly is preferably 80mm; The diameter of upper limit position block 1-2 is preferably 35mm, highly is preferably 20mm; The diameter of following holding rod 2-1 is preferably 19mm, highly is preferably 80mm; The diameter of lower position block 2-2 is preferably 35mm, highly is preferably 20mm.
The manufactured materials of described anchor clamps is selected carbon constructional quality steel for use except last bearing plate 1-3 and second following bearing plate 2-4, the following bearing plate 2-4 of last bearing plate 1-3 and second uses structural alloy steel or alloy tool steel, makes skin hardness be not less than 55HRC after being aided with suitable Technology for Heating Processing.
Pressure-bearing surface 1-4 and following pressure-bearing surface 2-6 are smooth, smooth on the described anchor clamps, and surface roughness parameter Ra is not more than 0.80 micron.
After the preparation of described anchor clamps is finished, should adopt and boil black method and handle, to improve its antirust ability.
Be positioned at the upper limit position block 1-2 on described anchor clamps top, can draw back the distance between voussoir end face 0-5 and the last bearing plate 1-3; Be positioned at the lower position block 2-2 of described resistance to compression anchor clamps lower part, can draw back the distance between voussoir end face 0-5 and the first following bearing plate 2-3; The reason that adopts this measure is because between the 647 type Wedge grippings and voussoir of MTS testing machine, relative motion can take place in the process of clamping, cause in the clamping process distance between the Wedge gripping end face and voussoir end face to be dwindled, distance in loosening process between two end faces increases, if there is not limited block, just may cause bearing plate 1-3 or first following bearing plate 2-3 too small towards face and the distance between the Wedge gripping end face of holding rod in the process of installation resistance to compression anchor clamps, make the end of test (EOT) back wedge can not unclamp the clamping of holding rod, cause test incident to take place.
Ball strand 2-5 between first following bearing plate 2-3 of described resistance to compression anchor clamps lower part and second following bearing plate 2-4 joins with two spheres with same curvature up and down, in the compression verification process of sample, by the relative motion between two spheres, can eliminate the eccentric compression phenomenon that causes owing to the deviation on the specimen size, improve the accuracy of test result.
The beneficial effects of the utility model are:
The nonmetallic materials anti-compression properties test that the utility model provides has pressure-bearing surface hardness height, the accurate positioning of sample put procedure, the rotation of ball strand flexibly with the resistance to compression anchor clamps and can eliminate the specimen size deviation to the test result influence and use safe characteristics, can realize the compression process of heavy in section nonmetallic materials, and in this process, realize the test of a series of material properties, as compressive strength, elastic modulus and Poisson ratio etc.
Description of drawings
Fig. 1 is 657 type Wedge grippings and the 647.25 voussoir synoptic diagram of MTS testing machine;
Among the figure, 0-1 is Wedge gripping, and 0-2 is voussoir, and 0-3 is piston, and 0-4 is the Wedge gripping end face, and 0-5 is the voussoir end face;
Fig. 2 a is the structural representation on described anchor clamps top;
Among the figure, 1-1 is last holding rod, and 1-2 is upper limit position block, and 1-3 is last bearing plate, and 1-4 is last pressure-bearing surface;
Fig. 2 b is the structural representation of described anchor clamps lower part;
Among the figure, 2-1 is following holding rod, and 2-2 is lower position block, and 2-3 is first following bearing plate, and 2-4 is second following bearing plate, and 2-5 is the ball strand, and 2-6 is pressure-bearing surface down, and 2-7 is scale mark;
The synoptic diagram that Fig. 3 a is 657 type Wedge grippings of MTS testing machine and 647.25 voussoirs under clamping resistance to compression anchor clamps state not;
Fig. 3 b is 657 type Wedge grippings and the synoptic diagram of 647.25 voussoirs under clamping resistance to compression anchor clamps state of MTS testing machine;
Fig. 4 a is the working state schematic representation of resistance to compression anchor clamps of the present utility model top on the MTS testing machine;
Fig. 4 b is the working state schematic representation of resistance to compression anchor clamps of the present utility model lower part on the MTS testing machine.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further:
Embodiment 1:
For example to test a block concrete compressive strength of specimens.
The clamping device that at first the MTS testing machine is respectively applied to clamping anchor clamps described in the utility model top and lower part draws suitable distance, this distance is with after installing resistance to compression anchor clamps described in the utility model, and remaining space can be placed sample to be tested and be had the surplus of 2-8mm to be as the criterion.
Respectively in the V-type groove of the voussoir 0-2 that top and the lower part of resistance to compression anchor clamps described in the utility model is installed to the MTS testing machine, and carry out clamping, shown in Fig. 4 a; Concrete installation process is as follows: at first the last holding rod 1-1 with resistance to compression anchor clamps top fills in the V-type groove of voussoir 0-2, contacts with the end face of voussoir 0-2 towards the face of last holding rod 1-1 until upper limit position block 1-2; Start corresponding hydraulic selector on the MTS testing machine then, make voussoir 0-2 hold with a firm grip and go up holding rod 1-1; In the process that grips, the distance between the Wedge gripping end face 0-4 of MTS testing machine and the voussoir end face 0-5 can be dwindled by relative motion; Lower part with the resistance to compression anchor clamps is installed on the MTS testing machine then, and its installation process is identical with the method that resistance to compression anchor clamps top is installed.
Concrete sample to be tested is placed on the following pressure-bearing surface 2-6 of resistance to compression anchor clamps lower part, and the sample to be tested of scale mark 2-7 on the pressure-bearing surface 2-6 positions under utilizing, and makes the axis of sample to be tested be positioned at the center of pressure-bearing surface 2-6 under the resistance to compression anchor clamps.
The test procedure that starts the MTS testing machine loads sample, obtains the loads change rule in its compression process.
After test is finished, sample after at first will testing removes, hydraulic selector by closing control clamping resistance to compression anchor clamps top successively and lower part then, the gripping of opening the holding rod of voussoir 0-2 disassembles top and the lower part of resistance to compression anchor clamps from the clamping device of testing machine.
Claims (4)
1. the resistance to compression anchor clamps are used in a nonmetallic materials anti-compression properties test, it is characterized in that described clamp structure is as follows:
Described anchor clamps comprise two parts up and down, and top comprises holding rod (1-1), upper limit position block (1-2), goes up bearing plate (1-3) and last pressure-bearing surface (1-4);
Described upward holding rod (1-1) is positioned at the top of described upper limit position block (1-2), and the two is fixed together, and the diameter of upper limit position block (1-2) is bigger than last holding rod (1-1); Described upper limit position block (1-2) is fixedlyed connected with last bearing plate (1-3); The described pressure-bearing surface (1-4) of going up is a face going up bearing plate (1-3);
The lower part of described anchor clamps comprises holding rod (2-1), lower position block (2-2), first following bearing plate (2-3), second following bearing plate (2-4), ball strand (2-5), following pressure-bearing surface (2-6) and scale mark (2-7) down;
Described holding rod (2-1) down is positioned at the bottom of described lower position block (2-2), and the two is fixed together, and the diameter of lower position block (2-2) is bigger than following holding rod (2-1); Described lower position block (2-2) is fixedlyed connected with first following bearing plate (2-3); Described first following bearing plate (2-3) is connected by ball strand (2-5) with second following bearing plate (2-4); Following pressure-bearing surface (2-6) is a face of second following bearing plate (2-4), is carved with the scale mark (2-7) of locating for sample at described pressure-bearing surface (2-6) down.
2. anchor clamps according to claim 1 is characterized in that, the described diameter of going up holding rod (1-1) is 19mm, highly is 80mm; The diameter of upper limit position block (1-2) is 35mm, highly is 20mm; The diameter of following holding rod (2-1) is 19mm, highly is 80mm; The diameter of lower position block (2-2) is 35mm, highly is 20mm.
3. anchor clamps according to claim 1, it is characterized in that, the manufactured materials of described anchor clamps is selected carbon constructional quality steel for use except last bearing plate (1-3) and second following bearing plate (2-4), last bearing plate (1-3) and second following bearing plate (2-4) use structural alloy steel or alloy tool steel.
4. anchor clamps according to claim 1 is characterized in that, last pressure-bearing surface (1-4) and the following pressure-bearing surface (2-6) of described anchor clamps are smooth, smooth, and surface roughness parameter Ra is not more than 0.80 micron, and hardness is not less than 55HRC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220505725 CN203037524U (en) | 2012-09-28 | 2012-09-28 | Compression-resistant fixture for testing compression resistance of non-metal material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220505725 CN203037524U (en) | 2012-09-28 | 2012-09-28 | Compression-resistant fixture for testing compression resistance of non-metal material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203037524U true CN203037524U (en) | 2013-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220505725 Expired - Lifetime CN203037524U (en) | 2012-09-28 | 2012-09-28 | Compression-resistant fixture for testing compression resistance of non-metal material |
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| CN (1) | CN203037524U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914468A (en) * | 2012-09-28 | 2013-02-06 | 清华大学 | Compression-resisting clamping tool for testing compression resistance of non-metallic materials |
-
2012
- 2012-09-28 CN CN 201220505725 patent/CN203037524U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914468A (en) * | 2012-09-28 | 2013-02-06 | 清华大学 | Compression-resisting clamping tool for testing compression resistance of non-metallic materials |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |