Auxiliary tool for ECC stretching detection
By using auxiliary tools of dial meters and detection fixtures in ECC tensile detection, the problem of low precision and accuracy of ECC specimens in the prior art is solved, and a higher detection accuracy and rapid detection process is achieved.
Patent Information
- Application Number
- CN202420553884.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-21
AI Technical Summary
In the prior art, when performing tensile testing of ECC specimens, the accuracy and accuracy of the detection are not high, and the results may be inaccurate due to the relative sliding of the tensile clamp when fixed.
It provides an auxiliary tool for ECC stretch detection, including a dial meter, an upper detection fixture and a lower detection fixture. The tensile displacement in the middle of the ECC specimen is detected through the dial meter, and data is transmitted to the computer to achieve accurate tensile detection.
The tensile detection accuracy and accuracy of the ECC specimen are improved, and the entire detection process is convenient and fast, and the stretching fingers of the cuboid segment in the ECC specimen can be accurately obtained.
Smart Images
Figure CN222579797U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of stretching detection, in particular to an auxiliary tool for ECC stretching detection. Background Art
[0002] High ductility cement-based composite material, referred to as ECC, is a fiber-reinforced composite material based on the principles of micromechanics, with cement, quartz sand, etc. as the matrix. It has the characteristics of strain hardening and multi-crack cracking, and has high strength, high ductility, high crack resistance and high damage resistance. Its tensile and bending properties can reach more than 300 times that of ordinary concrete, and it is called "bent concrete". In order to study the tensile properties of ECC, a universal testing machine is usually used to perform tensile tests to detect its performance. However, when the existing universal testing machine is used for testing, tensile clamps 1 and 2 are fixed at the two ends of the ECC specimen, and relative sliding may occur during stretching, resulting in inaccurate tensile test results.
[0003] The applicant has found that the prior art has at least the following technical problems:
[0004] In the prior art, when tensile testing is performed on ECC specimens, the testing precision and accuracy are not high. Utility Model Content
[0005] The purpose of the utility model is to provide an auxiliary tool for ECC tensile testing to solve the technical problem that the detection precision and accuracy are not high when performing tensile testing on ECC specimens in the prior art. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] The utility model provides an auxiliary tool for ECC tensile testing, comprising a micrometer, an upper testing fixture installed at the top of a rectangular parallelepiped section in the ECC specimen, and a lower testing fixture installed at the bottom of the rectangular parallelepiped section in the ECC specimen; wherein,
[0008] The upper detection fixture and the lower detection fixture are both adapted to the size of the rectangular parallelepiped section in the ECC test piece;
[0009] When a tensile test is required, the micrometer is installed on the upper test fixture, and the measuring head of the micrometer abuts against the upper surface of the lower test fixture;
[0010] It also includes a control computer, and the micrometer is electrically connected to the control computer.
[0011] Optionally or preferably, the upper detection fixture includes a detection fixture one and a detection fixture two that are movably connected, and a cavity one that is adapted to the size of the rectangular parallelepiped section in the ECC specimen is left between the detection fixture one and the detection fixture two; the lower detection fixture includes a detection fixture three and a detection fixture four that are movably connected, and a cavity two that is adapted to the size of the rectangular parallelepiped section in the ECC specimen is left between the detection fixture three and the detection fixture four.
[0012] Optionally or preferably, a mounting hole for mounting a micrometer is provided on the detection fixture 1 and / or the detection fixture 2, and a locking screw 1 for locking the micrometer is provided on the side wall of the mounting hole.
[0013] Optionally or preferably, the detection fixture 1 and the detection fixture 2 are both provided with locking screws 2 for locking the ECC specimen at positions corresponding to the cavity 1.
[0014] Optionally or preferably, the detection fixture three and the detection fixture four are both provided with locking screws three for locking the ECC specimen at positions corresponding to the cavity two.
[0015] Optionally or preferably, the detection fixture one and the detection fixture two are movably connected via a connecting screw one; the detection fixture three and the detection fixture four are movably connected via a connecting screw two.
[0016] Based on the above technical solution, the embodiment of the utility model can at least produce the following technical effects:
[0017] The utility model provides an auxiliary tool for ECC tensile testing. When the tensile testing of the ECC specimen is required, the two ends of the ECC specimen are firstly fixed on the first tensile fixture and the second tensile fixture respectively, and then the upper testing fixture and the lower testing fixture are installed, and finally the micrometer is installed; the tensile testing is carried out, the universal testing machine is turned on, and the ECC specimen is stretched. During the stretching process of the ECC specimen, the micrometer will detect the tensile displacement of the middle part of the ECC specimen, and the micrometer will transmit the detected data to the computer to complete the tensile testing; the whole testing process is convenient and fast, and the tensile index of the rectangular parallelepiped section in the middle of the ECC specimen can be accurately obtained through the micrometer, thereby improving the precision and accuracy of the ECC tensile testing. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1It is a structural schematic diagram of an ECC specimen in the prior art;
[0020] Figure 2 It is the installation diagram of the ECC specimen fixed on the tensile fixture 1 and the tensile fixture 2;
[0021] Figure 3 It is a schematic diagram of the use state of the utility model embodiment;
[0022] Figure 4 It is a schematic diagram of the structure of the detection fixture 1 and the detection fixture 2 in the embodiment of the utility model;
[0023] Figure 5 It is a structural schematic diagram of the upper detection fixture in the embodiment of the utility model;
[0024] Figure 6 It is a schematic diagram of the structure of the detection fixture three and the detection fixture four in the embodiment of the utility model;
[0025] Figure 7 It is a structural schematic diagram of the lower detection fixture in the embodiment of the utility model.
[0026] In the figure: 1, ECC test piece; 101, rectangular section; 102, outer rectangular section; 103, slope section; 2, upper detection fixture; 3, lower detection fixture; 4, micrometer; 401, measuring head; 5, detection fixture one; 6, detection fixture two; 7, detection fixture three; 8, detection fixture four; 9, cavity one; 10, cavity two; 11, locking screw one; 12, mounting hole; 13, locking hole one; 14, stretching fixture two; 15, locking hole two; 16, locking screw two; 17, locking hole three; 18, locking screw three; 19, connecting screw one; 20, connecting hole one; 21, connecting screw two; 22, connecting hole two; 23, stretching fixture one. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.
[0028] like Figure 1-Figure 7 As shown:
[0029] The utility model provides an auxiliary tool for ECC tensile testing, comprising a micrometer 4, an upper testing fixture 2 installed at the top of a rectangular parallelepiped section 101 in an ECC specimen 1, and a lower testing fixture 3 installed at the bottom of the rectangular parallelepiped section 101 in the ECC specimen 1; wherein,
[0030] The upper inspection fixture 2 and the lower inspection fixture 3 are both adapted to the size of the rectangular parallelepiped section 101 in the ECC test piece 1;
[0031] When a tensile test is required, the micrometer 4 is installed on the upper test fixture 2, and the measuring head 401 of the micrometer 4 abuts against the upper surface of the lower test fixture 3;
[0032] It also includes a control computer, and the micrometer 4 is electrically connected to the control computer.
[0033] The auxiliary tool for ECC tensile testing provided by the utility model, when it is necessary to perform tensile testing on an ECC specimen 1, firstly, the two ends of the ECC specimen 1 are respectively fixed on a tensile fixture 1 23 and a tensile fixture 2 14, then the upper testing fixture 2 and the lower testing fixture 3 are installed, and finally the micrometer 4 is installed; to perform tensile testing, the universal testing machine is turned on, and the ECC specimen 1 is stretched, and during the stretching process of the ECC specimen 1, the micrometer 4 will detect the tensile displacement of the middle part of the ECC specimen 1, and the micrometer 4 will transmit the detected data to a computer to complete the tensile testing; the entire testing process is convenient and fast, and the tensile index of the rectangular parallelepiped section 101 in the middle of the ECC specimen 1 can be accurately obtained through the micrometer 4, thereby improving the precision and accuracy of the ECC tensile testing.
[0034] As an optional embodiment, the upper detection fixture includes a detection fixture 1 5 and a detection fixture 2 6 which are movably connected, and a cavity 9 which is adapted to the size of the rectangular parallelepiped section 101 in the ECC specimen 1 is reserved between the detection fixture 1 5 and the detection fixture 2 6; the lower detection fixture includes a detection fixture 3 7 and a detection fixture 4 8 which are movably connected, and a cavity 2 10 which is adapted to the size of the rectangular parallelepiped section 101 in the ECC specimen 1 is reserved between the detection fixture 3 7 and the detection fixture 4 8.
[0035] As an optional embodiment, the detection fixture 1 5 and / or the detection fixture 2 6 is provided with a mounting hole 12 for mounting the micrometer 4, and a locking screw 11 for locking the micrometer 4 is provided on the side wall of the mounting hole 12. Specifically, a locking hole 13 matching the locking screw 11 is provided on the side wall of the mounting hole 12 for installing the locking screw 11.
[0036] As an optional implementation, the detection fixture 1 5 and the detection fixture 2 6 are both provided with locking screws 2 16 for locking the ECC test piece 1 at positions corresponding to the cavity 1 9. Specifically, a locking hole 2 15 matching the locking screw 2 16 is provided on the detection fixture 1 5 and the detection fixture 2 6 for installing the locking screw 2 16.
[0037] As an optional implementation, the detection fixture 3 7 and the detection fixture 4 8 are both provided with locking screws 3 18 for locking the ECC test piece 1 at positions corresponding to the cavity 2 10. Specifically, locking holes 3 17 matching the locking screws 3 18 are provided on the detection fixture 3 7 and the detection fixture 4 8 for installing the locking screws 3 18.
[0038] As an optional embodiment, the detection fixture 1 5 and the detection fixture 2 6 are movably connected by a connecting screw 19; the detection fixture 3 7 and the detection fixture 4 8 are movably connected by a connecting screw 21. Specifically, a connecting hole 20 matching the connecting screw 19 is provided at the connection position of the detection fixture 1 5 and the detection fixture 2 6 for installing the connecting screw 19; a connecting hole 22 matching the connecting screw 21 is provided at the connection position of the detection fixture 3 7 and the detection fixture 4 8 for installing the connecting screw 21. Of course, the detection fixture 1 5 and the detection fixture 2 6, as well as the detection fixture 3 7 and the detection fixture 4 8, can also be connected by other movable connection methods, and the movable connection method between the detection fixture 1 5 and the detection fixture 2 6, as well as the detection fixture 3 7 and the detection fixture 4 8 is not limited to the method disclosed in the present utility model.
[0039] The method of using the auxiliary tool for ECC tensile testing in the utility model is:
[0040] ① When the tensile test of ECC specimen 1 is required, the auxiliary tools for ECC tensile test should be installed first. Figure 1 As shown, the ECC specimen 1 generally includes outer rectangular parallelepiped sections 102 at both ends and a rectangular parallelepiped section 101 in the middle, and also includes a slope section 103 between the outer rectangular parallelepiped sections 102 at both ends and the rectangular parallelepiped section 101 in the middle. When installing, first fix the two ends of the ECC specimen 1 on the tensile fixture 1 23 and the tensile fixture 2 14 respectively, as shown in FIG. Figure 2 As shown, then install the upper detection fixture 2 and the lower detection fixture 3, and finally install the micrometer 4, abut the measuring head 401 of the micrometer 4 against the upper surface of the lower detection fixture 3, and electrically connect the micrometer 4 to the control computer; complete the installation of the ECC tensile detection auxiliary tool, as shown in FIG. Figure 3 As shown ( Figure 3 The control computer is not shown).
[0041] ② Perform tensile testing, start the universal testing machine, and stretch the ECC specimen 1. During the stretching process of the ECC specimen 1, the micrometer 4 will detect the tensile displacement of the middle part of the ECC specimen 1. At the same time, the micrometer 4 will transmit the detected data to the control computer to complete the tensile test.
[0042] The above description is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention.
Claims
1. An auxiliary tool for ECC tensile testing, characterized in that: It comprises a micrometer (4), an upper detection fixture installed at the top end of the rectangular parallelepiped section (101) in the middle of the ECC test piece (1), and a lower detection fixture installed at the bottom end of the rectangular parallelepiped section (101) in the middle of the ECC test piece (1); wherein: The upper detection fixture and the lower detection fixture are both adapted to the size of the rectangular parallelepiped section (101) in the middle of the ECC test piece (1); When a tensile test is required, the micrometer (4) is mounted on the upper testing fixture, and the measuring head (401) of the micrometer (4) abuts against the upper surface of the lower testing fixture; It also includes a control computer, and the micrometer (4) is electrically connected to the control computer.
2. The ECC tensile testing auxiliary tool according to claim 1, characterized in that: The upper detection fixture comprises a detection fixture 1 (5) and a detection fixture 2 (6) which are movably connected, and a cavity 1 (9) which is adapted to the size of the rectangular parallelepiped section (101) in the middle of the ECC test piece (1) is reserved between the detection fixture 1 (5) and the detection fixture 2 (6); the lower detection fixture comprises a detection fixture 3 (7) and a detection fixture 4 (8) which are movably connected, and a cavity 2 (10) which is adapted to the size of the rectangular parallelepiped section (101) in the middle of the ECC test piece (1) is reserved between the detection fixture 3 (7) and the detection fixture 4 (8).
3. The ECC tensile testing auxiliary tool according to claim 2, characterized in that: The detection fixture 1 (5) and / or the detection fixture 2 (6) is provided with a mounting hole (12) for mounting a micrometer (4), and a locking screw 1 (11) for locking the micrometer (4) is provided on the side wall of the mounting hole (12).
4. The ECC tensile testing auxiliary tool according to claim 3, characterized in that: The detection fixture 1 (5) and the detection fixture 2 (6) are both provided with locking screws 2 (16) for locking the ECC test piece (1) at positions corresponding to the cavity 1 (9).
5. The ECC tensile testing auxiliary tool according to claim 4, characterized in that: The detection fixture three (7) and the detection fixture four (8) are both provided with locking screws three (18) for locking the ECC test piece (1) at positions corresponding to the cavity two (10).
6. The ECC tensile testing auxiliary tool according to claim 5, characterized in that: The detection fixture 1 (5) and the detection fixture 2 (6) are movably connected via a connecting screw 1 (19); the detection fixture 3 (7) and the detection fixture 4 (8) are movably connected via a connecting screw 2 (21).