High temperature extensometer ceramic rod mounting device

Abstract

The utility model discloses a high temperature extensometer ceramic rod installation device, comprising a slide rail 1, a first slider and a second slider are arranged on the slide rail, an extensometer fixing platform is arranged on the first slider, a ceramic rod fixing platform is arranged on the second slider, a mounting plate is vertically arranged on the ceramic rod fixing platform, two mounting grooves are longitudinally provided on the mounting plate, and two horizontally arranged ceramic rod mounting cylinders are also included, and the two ceramic rod mounting cylinders are installed on the two mounting grooves. The device can make the installation depth accurate and can protect the ceramic rod from being easily damaged. While ensuring the stability of the installation, the installation accuracy is also guaranteed, and the accuracy of the subsequent tests is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of fatigue testing devices, and in particular relates to a high-temperature extensometer ceramic rod installation device. Background Art

[0002] In the tensile test and fatigue test in mechanical test, the extensometer should be extended into the high temperature furnace for control, so the design of the extensometer should not be too small. At present, the most popular high temperature extensometer is to install two high temperature ceramic rods on the extensometer device, and fix the ceramic rods on the specimen. During the test, as the specimen is stretched or compressed, the ceramic rod will also stretch or compress accordingly. Through the extensometer device at the rear end of the ceramic rod, the deformation of the ceramic rod is sensed and fed back to the testing machine to control the deformation of the specimen for testing. When in use, the front end of the ceramic rod contacts the test specimen, and the front end is designed to be cone-shaped to achieve the point-surface effect of the contact surface. Therefore, when installing the ceramic rod, the installation length of the two ceramic rods is consistent. If not, it is easy to break due to uneven force when the specimen deforms. And in many precision tests, test specimens of 25mm or even less in length are required, that is, 25mm specimens, and deformation of less than 0.5mm occurs back and forth. Therefore, in order to ensure the accuracy of the test, it is necessary to ensure that the two cones at the front end of the ceramic rod are parallel, perpendicular to the surface of the specimen and parallel to the ground. However, during actual installation, the only way for the tester to determine whether the length of the ceramic rods is consistent and whether the two cones are parallel is to use a tester, and there is no standard for measurement. Utility Model Content

[0003] The utility model aims to provide a high temperature extensometer ceramic rod installation device, which can ensure that the length of the ceramic rod is consistent and the cone mouth is flush after the ceramic rod is installed.

[0004] The technical solution adopted by the utility model is that the high-temperature extensometer ceramic rod installation device comprises a slide rail, a first slide block and a second slide block are arranged on the slide rail, an extensometer fixing platform is arranged on the first slide block, a ceramic rod fixing platform is arranged on the second slide block, a mounting plate is vertically arranged on the ceramic rod fixing platform, two mounting grooves are longitudinally provided on the mounting plate, and two horizontally arranged ceramic rod mounting cylinders are also included, and the two ceramic rod mounting cylinders are both installed on the mounting grooves.

[0005] The utility model is also characterized in that:

[0006] The extensometer fixing platform and the first sliding block are fixed by bolts.

[0007] The ceramic rod fixing platform and the second sliding block are fixed by bolts.

[0008] Two thread grooves are arranged on the sides of the two ceramic rod mounting cylinders, and the two ceramic rod mounting cylinders are horizontally fixed on the two mounting grooves by inserting bolts into the thread grooves.

[0009] The two ceramic rod installation tubes are arranged in parallel, and one end of the ceramic rod installation tube is in a cone shape, and the other end is in an open shape.

[0010] The beneficial effects of the utility model are:

[0011] (1) The device can ensure accurate installation depth and protect the ceramic rod from damage. While ensuring stable installation, it also ensures installation accuracy and the accuracy of subsequent tests;

[0012] (2) When using this device, the ceramic rod can move freely and be fixed, and it can adapt to extensometers of all gauge lengths, and it will not be unable to be installed because the metal protective shell of the extensometer is too large. At the same time, the fixed tooling can be used to install the ceramic rod at any time when changing different gauge lengths for testing, saving working time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the ceramic rod installation device of the high temperature extensometer of the utility model;

[0014] Figure 2 It is a schematic diagram of the connection structure of the mounting groove and the ceramic rod mounting tube in the ceramic rod mounting device of the high temperature extensometer of the utility model;

[0015] Figure 3 This is a schematic diagram of the use of the ceramic rod installation device of the utility model for high temperature extensometer (I);

[0016] Figure 4 This is a schematic diagram of the use of the ceramic rod installation device of the utility model for high temperature extensometer (II);

[0017] Figure 5 This is a schematic diagram (III) of the use of the ceramic rod installation device of the high temperature extensometer of the utility model.

[0018] In the figure, 1. slide rail, 2. extensometer fixing platform, 3. first slider, 4. mounting plate, 5. ceramic rod fixing platform, 6. mounting groove, 7. second slider, 8. ceramic rod mounting tube, 9. ceramic rod, 10. extensometer base. DETAILED DESCRIPTION

[0019] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0020] Example 1

[0021] The utility model high temperature extensometer ceramic rod installation device, such as Figure 1As shown, it comprises a slide rail 1, a first slider 3 and a second slider 7 are arranged on the slide rail 1, an extensometer fixing platform 2 is arranged on the first slider 3, a ceramic rod fixing platform 5 is arranged on the second slider 7, and the extensometer fixing platform 2 and the first slider 3, the ceramic rod fixing platform 5 and the second slider 7 are all fixed by bolts;

[0022] A mounting plate 4 is vertically arranged on the ceramic rod fixing platform 5, and two mounting grooves 6 are longitudinally opened on the mounting plate 4, and two horizontally arranged ceramic rod mounting tubes 8 are also included. One end of the ceramic rod mounting tube 8 is conical, and the size is consistent with the conical end of the ceramic rod 9, and the other end is open; if the front end cone of the ceramic rod 9 is not level with the ground after entering, it will be stuck at the front end and cannot go deeper. If it goes deep into the deepest part of the tube, the ceramic rod 9 is completely fitted with the ceramic rod mounting tube 8 and cannot move, so as to ensure that the front end cones of the two ceramic rods 9 are level and the depth is consistent.

[0023] Example 2

[0024] like Figure 2 As shown, two threaded grooves are provided on the side of the ceramic rod mounting tube 8, and the ceramic rod mounting tube 8 is fixed to the mounting groove 6 by bolts, and the two bolts are respectively inserted into the two threaded grooves and the two ends of the ceramic rod mounting tube 8 are horizontally fixed on the two mounting grooves 6; because the side of the ceramic rod mounting tube 8 has two threaded grooves and there are two mounting grooves 6, only when the ceramic rod mounting tube 8 is parallel to the ground can the two bolts be installed, otherwise only one bolt can be installed. After the two bolts are installed at the same time, the structure of the ceramic rod mounting tube 8 is stable and cannot be easily moved, and the ceramic rod mounting tube 8 is parallel to the ground to ensure that the ceramic rod is horizontal to the ground after installation.

[0025] While ensuring that the ceramic rod mounting tube 8 is parallel to the ground, loosen the bolts and slide the ceramic rod mounting tube 8 longitudinally on the side of the mounting groove 6 to achieve the installation of high-temperature extensometer ceramic rods of different sizes. After adapting the high-temperature extensometer ceramic rod gauge length, tighten the bolts.

[0026] Example 3

[0027] The specific working principle of the high temperature extensometer ceramic rod installation device of the utility model is:

[0028] like Figure 3-Figure 5As shown, when in use, the extensometer base 10 is fixed by the extensometer fixing platform 2, and the two ceramic rods 9 on the extensometer base 10 are extended into the two ceramic rod mounting tubes 8, and the ceramic rods 9 are to be extended into the tapered ends. At this time, it can be determined that the tapered ends of the two ceramic rods 9 are parallel and perpendicular to the ground, and the exposed parts of the two ceramic rods 9 are of the same length. Then, the ceramic rods 9 are withdrawn from the ceramic rod mounting tubes 8, and the ceramic rods 9 are fixed on the extensometer base 10. The high-temperature extensometer is withdrawn from the extensometer base 10 and the extensometer fixing platform 2 together. The high-temperature extensometer can be used for testing. Even if the extensometer base 10 remains on the high-temperature extensometer, it will not affect the test results. If the ceramic rod is damaged during subsequent use, the ceramic rod can be reinstalled by simply repeating the above steps, and it is ensured that after the ceramic rod is replaced, the depth is consistent and the cone mouth is parallel and perpendicular to the ground.

[0029] The utility model high temperature extensometer ceramic rod installation device can make the installation depth accurate and protect the ceramic rod from damage. And because the high temperature extensometer is mainly used for precision test tooling, whether the tapered mouth is straight or not has a great influence, the device ensures the installation stability while also ensuring the installation accuracy and the accuracy of subsequent tests.

[0030] Since the ceramic rod fixing platform 5 and the ceramic rod mounting tube 8 are flexible, they can be adapted to different extensometer gauge lengths. If there are multiple high-temperature extensometers, it is only necessary to install the extensometer fixing platform 2 at the lower ends of all high-temperature extensometers, and ceramic rods can be installed for multiple extensometers through one device; in addition, the device has a simple structure, low cost, and is easy to promote.

Claims

1. High temperature extensometer ceramic rod installation device, characterized in that: The invention comprises a slide rail (1), wherein a first slider (3) and a second slider (7) are arranged on the slide rail (1), an extensometer fixing platform (2) is arranged on the first slider (3), a ceramic rod fixing platform (5) is arranged on the second slider (7), a mounting plate (4) is vertically arranged on the ceramic rod fixing platform (5), two mounting grooves (6) are longitudinally provided on the mounting plate (4), and two horizontally arranged ceramic rod mounting cylinders (8) are installed on the two mounting grooves (6).

2. The high temperature extensometer ceramic rod mounting device according to claim 1, characterized in that: The extensometer fixing platform (2) and the first sliding block (3) are fixed by bolts.

3. The high temperature extensometer ceramic rod mounting device according to claim 1, characterized in that: The ceramic rod fixing platform (5) and the second sliding block (7) are fixed by bolts.

4. The high temperature extensometer ceramic rod mounting device according to claim 1, characterized in that: Two thread grooves are arranged on the sides of the two ceramic rod mounting cylinders (8), and the two ceramic rod mounting cylinders (8) are horizontally fixed on the two mounting grooves (6) by inserting bolts into the thread grooves.

5. The high temperature extensometer ceramic rod mounting device according to claim 4, characterized in that: The two ceramic rod mounting tubes (8) are arranged in parallel, and one end of the ceramic rod mounting tube (8) is in a cone shape, and the other end is in an open shape.

Images