CN214794234U

CN214794234U - Special strain test device of high accuracy tubular ceramic membrane

Info

Publication number: CN214794234U
Application number: CN202120838366.1U
Authority: CN
Inventors: 姚勇志
Original assignee: Zhuhai Sust Electrical Equipment Co ltd
Current assignee: Zhuhai Sust Electrical Equipment Co ltd
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-11-19
Anticipated expiration: 2031-04-23

Abstract

The utility model discloses a special strain test device of high accuracy tubular ceramic membrane relates to ceramic membrane test technical field, including test fixture, compression roller, anchor clamps support, strain gauge, backing roll, dog and buffer spring. The utility model discloses in with bending test and survey the tensile properties of bending fracture deformation indirect survey ceramic membrane, mechanical properties data such as fracture toughness, the lower extreme supports the sample with two backing rolls, in order to guarantee that the sample can fix, and satisfy the centering requirement, there are two backing rolls side department design sample dogs, the dog can be according to different grade type sample quick replacement, be suitable for whole ceramic membrane specification, the upper end uses the round bar as the compression roller, can general all specification samples; to the bending fracture deformation of surveying brittle material, there is certain impact force after experimental disconnected, can damage the strainometer, and buffer spring carries out elastic buffer between strainometer and sample, alleviates the impact force, prevents to damage.

Description

Special strain test device of high accuracy tubular ceramic membrane

Technical Field

The utility model relates to a ceramic membrane test technical field specifically is a special strain test device of high accuracy tubular ceramic membrane.

Background

The material testing technology of China is accumulated for many years, and the material testing technology is actively developed in the fields of measuring technology, control technology, computer application technology, DSP technology, testing tools and the like, but the testing technology related to the testing machine is an integrated system, relates to a multi-door multi-layer technology threshold, and the development and production of the testing machine are not only for simply solving the equipment production problem, but also for designing an integrated system meeting the field testing requirements according to the testing working condition requirements. The knowledge of multiple disciplines such as mechanics, electricity, software, optics, materials, high and low temperature environments, medium environments and the like is involved, and the method has considerable difficulty. The ceramic membrane has the characteristics of good chemical stability, acid resistance, alkali resistance, organic solvent resistance and the like, and is widely applied to the fields of food industry, bioengineering, environmental engineering, chemical industry, petrochemical industry, metallurgical industry and the like. After the ceramic membrane is produced and processed, the performance of the ceramic membrane needs to be detected.

The existing ceramic membrane performance testing device is difficult to clamp and easy to slip during testing due to the characteristic that the ceramic membrane finished product has high hardness and brittleness, so that the performance testing accuracy is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a special strain test device of high accuracy tubular ceramic membrane to solve the problem that proposes in the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme: a special strain testing device for a high-precision tubular ceramic membrane comprises a three-point bending testing machine body, wherein lifting frames are symmetrically arranged on two sides of the top of the three-point bending testing machine body, a testing tool is arranged between two lifting frames at the center of the top of the three-point bending testing machine body, a same pressure sensor is arranged between the two lifting frames and above the testing tool, the testing tool comprises a lower clamp connector and an upper clamp connector, the upper clamp connector is fixedly connected with the center of the bottom of the pressure sensor, an upper clamp pressure head is vertically arranged at the bottom of the upper clamp connector, a compression roller in rotary connection is arranged at the bottom of the upper clamp pressure head, the cross section of the compression roller is of a circular structure, the lower clamp connector is fixedly connected with the center of the top of the three-point bending testing machine body, a lower clamp base is horizontally arranged at the top of the lower clamp connector, the fixture comprises a fixture lower base and is characterized in that fixture supports are symmetrically arranged on two sides of the top of the fixture lower base, a strain gauge which is movably connected is vertically arranged in the center of the top of the fixture lower base, a buffer spring is arranged at the top of the strain gauge, a supporting roller is arranged at the top of the fixture support, and a stop block which is movably connected is arranged on the outer wall of the fixture support and outside the supporting roller.

Furthermore, the pressure sensor is FA in model, so that the detection range and the detection precision of the pressure sensor are ensured.

Furthermore, the outer wall of the lower base of the fixture is provided with a scale which is used for reference of a three-point bending test, and the compression roller and the test piece are ensured to be in the middle position.

Furthermore, the outer wall of the compression roller is arranged on the outer side of the pressing head on the clamp, the supporting plate is fixedly connected with the pressing head on the clamp, and the supporting plate is used for reinforcing the compression roller to enhance the stability of the compression roller.

Furthermore, the compression roller and two the equal parallel arrangement of backing roll guarantees that two backing rolls support test piece both ends, and the compression roller pushes down from the test piece is middle, and stability is better.

Further, a slide rail is arranged at the center of the top of the lower base of the fixture, a slide groove matched with the slide rail is arranged at the bottom of the strain gauge, the lower base of the fixture is movably connected with the strain gauge through the slide rail and the slide groove, and the strain gauge is convenient to install and replace.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is:

1. the utility model discloses a set up the test fixture, the compression roller, the anchor clamps support, the strain gauge, the backing roller, dog and buffer spring, the compression roller is pressurized with the ceramic membrane product top contact of examination of awaiting measuring, two backing rollers and a compression roller form three point bending test structure, ceramic membrane product to the examination of awaiting measuring is tested and is handled, with the tensile properties of bending test with survey bending fracture deformation in addition indirectly survey ceramic membrane, mechanical properties data such as fracture toughness, the sample is supported with two backing rollers to the lower extreme, for guaranteeing that the sample can fix, and satisfy the centering nature requirement, there are two backing roller side department design sample dogs, the dog can be according to different grade type sample quick replacement, be suitable for whole ceramic membrane specifications.

2. The round rod is used as the compression roller at the upper end of the utility model, and all the specification samples can be used universally; to the bending fracture deformation of surveying brittle material, there is certain impact force after experimental disconnected, can damage the strainometer, and buffer spring carries out elastic buffer between strainometer and sample, alleviates the impact force, prevents to damage.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a front view of the present invention as a whole;

FIG. 2 is a front view of the testing tool of the present invention;

in the figure: 1. a three-point bending tester body; 2. a lifting frame; 3. testing the tool; 4. a pressure sensor; 5. connecting the clamp; 6. pressing heads on the clamps; 7. a compression roller; 8. a clamp lower joint; 9. a clamp lower base; 10. a clamp support; 11. a strain gauge; 12. a support roller; 13. a stopper; 14. a buffer spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The special strain testing device for the high-precision tubular ceramic membrane comprises a three-point bending testing machine body 1, wherein lifting frames 2 are symmetrically arranged on two sides of the top of the three-point bending testing machine body 1, a testing tool 3 is arranged between the two lifting frames 2 at the top center of the three-point bending testing machine body 1, the same pressure sensor 4 is arranged above the testing tool 3 between the two lifting frames 2, the testing tool 3 comprises a lower clamp connector 8 and an upper clamp connector 5, the upper clamp connector 5 is fixedly connected with the bottom center of the pressure sensor 4, an upper clamp pressure head 6 is vertically arranged at the bottom of the upper clamp connector 5, a compression roller 7 in rotary connection is arranged at the bottom of the upper clamp pressure head 6, the cross section of the compression roller 7 is of a circular structure, and the lower clamp connector 8 is fixedly connected with the top center of the three-point bending

testing machine body

1, 8 top levels of anchor clamps lower clutch are equipped with anchor clamps

lower base

9, 9 top bilateral symmetry are equipped with anchor clamps support 10 under the anchor clamps, 9 top centers of base are vertical to be equipped with swing joint's strain gauge 11 under the anchor clamps, 11 tops of strain gauge are equipped with buffer spring 14, 10 tops of anchor clamps support are equipped with

backing roll

12, 10 outer walls of anchor clamps support in the backing roll 12 outside is equipped with swing joint's dog 13.

The type of the pressure sensor 4 is FA408, so that the detection range and the detection precision of the pressure sensor 4 are ensured.

The outer wall of the clamp lower base 9 is provided with a scale which contrasts and refers to a three-point bending test, and the compression roller 7 and the test piece are ensured to be in the middle position.

The outer wall of the compression roller 7 is arranged on the outer side of the pressing head 6 on the clamp, the supporting plate is fixedly connected with the pressing head 6 on the clamp, and the supporting plate is used for reinforcing the compression roller 7 to enhance the stability of the compression roller 7.

Compression roller 7 and two the equal parallel arrangement of backing roll 12 guarantees that two backing rolls 12 support test piece both ends, and compression roller 7 pushes down from the test piece is middle, and stability is better.

The center of the top of the lower fixture base 9 is provided with a sliding rail, the bottom of the strain gauge 11 is provided with a sliding groove matched with the sliding rail, the movable connection between the lower fixture base 9 and the strain gauge 11 is realized through the sliding rail and the sliding groove, and the strain gauge 11 is convenient to install and replace.

The implementation mode is specifically as follows: when the ceramic film testing fixture is used, a ceramic film is tested by the aid of the three-point bending testing machine body 1 through the testing fixture 3, the compression roller 7, the fixture support 10, the strain gauge 11, the supporting roller 12, the stop block 13 and the buffer spring 14, a ceramic film product to be tested is placed on the inner side of the testing fixture 3, the supporting roller 12 supports two ends of the bottom of the ceramic film product to be tested, the compression roller 7 is located at the central position above the top of the ceramic film product to be tested, the fixture support 10 supports the bottom of the supporting roller 12, the fixture lower base 9 supports the fixture support 10 and the strain gauge 11, the fixture lower connector 8 supports the fixture lower base 9, the strain gauge 11 detects the strain state of the bottom of the ceramic film product to be tested, the lifting frame 2 drives the pressure sensor 4 to move up and down, and the fixture upper connector 5 moves up and down along with the pressure sensor 4, the method comprises the following steps that an upper clamp pressure head 6 moves up and down along with an upper clamp connector 5, a compression roller 7 moves up and down along with the upper clamp pressure head 6, the compression roller 7 is in contact with the top of a ceramic membrane product to be tested and is pressurized, a three-point bending test structure is formed by two supporting rollers 12 and the compression roller 7, the ceramic membrane product to be tested is subjected to test treatment, the tensile property of the ceramic membrane is indirectly measured by using a bending test and bending fracture deformation measurement, mechanical property data such as fracture toughness and the like are obtained, the lower end of the ceramic membrane is provided with two supporting rollers 12 to support a sample, in order to ensure that the sample can be fixed and meet the centering requirement, a sample stop block 13 is designed at the side edge of the two supporting rollers 12, the stop block 13 can be quickly replaced according to different types of samples, and the ceramic membrane test block is suitable for all ceramic membrane specifications; the upper end uses a round rod as a compression roller 7, and all specification samples can be used universally; for measuring the bending fracture deformation of the brittle material, certain impact force is generated after the test fracture, the strain gauge 11 can be damaged, and the buffer spring 14 performs elastic buffer between the strain gauge 11 and the test sample, so that the impact force is relieved, and the damage is prevented.

The utility model discloses the theory of operation:

referring to the attached drawings 1-2 of the specification, the utility model discloses in through setting up test fixture 3, compression roller 7, anchor clamps support 10, strain gauge 11, backing roll 12, dog 13 and buffer spring 14, compression roller 7 pressurizes with the ceramic membrane product top contact that awaits measuring, two backing rolls 12 and a compression roller 7 form three point bending test structure, test treatment is carried out to the ceramic membrane product that awaits measuring, the tensile properties of ceramic membrane is surveyed indirectly with bending test plus survey bending fracture deformation, mechanical properties data such as fracture toughness, the lower extreme supports the sample with two backing rolls 12, in order to guarantee that the sample can be fixed, and satisfy centering nature requirement, there are two backing rolls 12 side design sample dog 13, dog 13 can be according to different grade type sample quick replacement, be suitable for all ceramic membrane specifications; the upper end uses a round rod as a compression roller 7, and all specification samples can be used universally; for measuring the bending fracture deformation of the brittle material, certain impact force is generated after the test fracture, the strain gauge 11 can be damaged, and the buffer spring 14 performs elastic buffer between the strain gauge 11 and the test sample, so that the impact force is relieved, and the damage is prevented.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a special strain test device of high accuracy tubular ceramic membrane, includes three point bending test machine body (1), its characterized in that: the testing device is characterized in that lifting frames (2) are symmetrically arranged on two sides of the top of the three-point bending testing machine body (1), a testing tool (3) is arranged between the two lifting frames (2) at the top center of the three-point bending testing machine body (1), a same pressure sensor (4) is arranged above the testing tool (3) between the two lifting frames (2), the testing tool (3) comprises a lower clamp connector (8) and an upper clamp connector (5), the upper clamp connector (5) is fixedly connected with the center of the bottom of the pressure sensor (4), an upper clamp pressure head (6) is vertically arranged at the bottom of the upper clamp connector (5), a compression roller (7) which is rotatably connected is arranged at the bottom of the upper clamp pressure head (6), the cross section of the compression roller (7) is of a circular structure, and the lower clamp connector (8) is fixedly connected with the center of the top of the three-point bending testing machine body (1), anchor clamps lower clutch (8) top level is equipped with base (9) under the anchor clamps, base (9) top bilateral symmetry is equipped with anchor clamps support (10) under the anchor clamps, base (9) top center is vertical to be equipped with swing joint's strain gauge (11) under the anchor clamps, strain gauge (11) top is equipped with buffer spring (14), anchor clamps support (10) top is equipped with backing roll (12), anchor clamps support (10) outer wall in the backing roll (12) outside is equipped with swing joint's dog (13).

2. The high-precision strain testing device special for the tubular ceramic membrane according to claim 1, wherein the strain testing device comprises: the type of the pressure sensor (4) is FA 408.

3. The high-precision strain testing device special for the tubular ceramic membrane according to claim 1, wherein the strain testing device comprises: and a scale is arranged on the outer wall of the lower clamp base (9).

4. The high-precision strain testing device special for the tubular ceramic membrane according to claim 1, wherein the strain testing device comprises: the outer wall of the compression roller (7) is provided with a supporting plate outside the upper pressing head (6) of the clamp, and the supporting plate is fixedly connected with the upper pressing head (6) of the clamp.

5. The high-precision strain testing device special for the tubular ceramic membrane according to claim 1, wherein the strain testing device comprises: the compression roller (7) and the two supporting rollers (12) are arranged in parallel.

6. The high-precision strain testing device special for the tubular ceramic membrane according to claim 1, wherein the strain testing device comprises: the center of the top of the lower clamp base (9) is provided with a sliding rail, and the bottom of the strain gauge (11) is provided with a sliding groove matched with the sliding rail.