Underneath mounting structure of coaxiality ring
By designing a lower mounting structure for the coaxiality ring in the mechanical testing machine and utilizing the overall connection of components such as the base, transition flange, and tie rod, the coaxiality problem of the upper and lower clamps was solved, ensuring the accuracy of test data and addressing the shortage of operating space, thus achieving test reliability.
Patent Information
- Application Number
- CN202423217173.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2034-12-23
AI Technical Summary
In mechanical testing machines, manufacturing errors in the mechanical structure can cause misalignment between the upper and lower clamps, resulting in inaccurate specimen deformation and stress. Furthermore, under certain testing requirements, the lack of operating space when the coaxiality ring is installed at the bottom affects the accuracy of the test data.
A bottom mounting structure for a coaxiality ring is designed. By setting holes, transition flanges, tie rods, gaskets, high-strength nuts, and screws on the base, an integral connection is formed to ensure that one end of the coaxiality ring is connected to the lower base and the other end is connected to the lower clamp, providing sufficient operating space for tightening.
This technology enables the successful installation of coaxiality rings even in situations with limited operating space, ensuring the accuracy and reliability of test data and avoiding installation difficulties caused by insufficient space.
Smart Images
Figure CN223808228U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mechanics test technical field, concretely is a coaxial ring's under -the -installation structure. BACKGROUND
[0002] In the mechanical testing machine, each set of fixture is arranged on the upper and lower, and the two ends of the bar or plate sample are clamped and connected respectively. The upper and lower fixtures must have good coaxiality, and the sample is subjected to vertical axial pure tensile force value, so as to ensure the accuracy of test results. But the inevitable manufacturing error of mechanical structure will lead to the misalignment between the upper and lower fixtures, resulting in the C-type deformation, S-type deformation stress or the composite deformation of the sample, and the local stress / strain of the sample will be much larger than the design value, so that the final test data is inaccurate.
[0003] A coaxial ring is added on the loading chain of the testing machine, one end of the coaxial ring is connected with the upper base, and the other end is connected with the fixture. The coaxial ring can be used to accurately adjust the hydraulic clamp, so that the ideal coaxiality can be easily achieved, and the problem of inaccurate data caused by the coaxiality is avoided. In the installation process of the coaxial ring, the pull rod connected with the coaxial ring must be tightened by the force nut and screw. At this time, the force nut and screw must have a certain operation space. Therefore, the design in the industry is to install the coaxial ring on the top, that is, one end of the coaxial ring is connected with the upper base, and the force nut and screw are exposed on the upper side of the upper base, so that there is enough operation space to tighten the screw.
[0004] Some test requirements can achieve ideal test results only by installing the coaxial ring under, that is, one end of the coaxial ring is connected with the lower base, and the other end is connected with the lower fixture. The lower base is generally directly in contact with the ground or very close to the ground. After the coaxial ring is installed, the force nut and screw are downward, and the position is close to the ground on the side of the lower base. There is no operation space to tighten the force nut and screw. Moreover, the testing machine is heavy, and it is difficult for the installation workers to adjust the testing machine to lie down to leave operation space. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a coaxial ring's under -the -installation structure to solve the problems in the above background technology.
[0006] In order to achieve the above object, the utility model provides the following technical scheme: a coaxial ring's under -the -installation structure, including base, the hole is set up on the base, the excess flange is equipped in the hole, the pull rod is equipped in the excess flange, the gasket is equipped on the pull rod, the force nut is equipped below the gasket, the screw is equipped below the force nut, the coaxial ring is equipped above the excess flange, the force sensor is equipped above the coaxial ring, the detection end of the force sensor is fixedly connected with the hydraulic clamp, and the hydraulic clamp clamps the sample.
[0007] Preferably, one end of the pull rod penetrates the coaxial ring, and the pull rod is connected with the force sensor through a threaded connection.
[0008] Preferably, the excess flange is connected with the base through a fastening screw.
[0009] Preferably, the force sensor, the sample, the coaxial ring, the excess flange, the fastening screw, the pull rod, the gasket, the force nut and the screw form an integral whole.
[0010] Compared with the prior art, the coaxial ring is connected with the lower base at one end and connected with the lower clamp at the other end, and the problem of insufficient installation operation space is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is an overall structural schematic view of the utility model;
[0012] Figure 2 It is an enlarged schematic view of the excess flange structure of the utility model.
[0013] In the figure: 1, base; 2, force sensor; 3, hydraulic clamp; 4, sample; 5, coaxial ring; 6, excess flange; 7, fastening screw; 8, pull rod; 9, gasket; 10, force nut; 11, screw. DETAILED DESCRIPTION
[0014] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without making creative efforts fall within the protection scope of the utility model.
[0015] Please refer to 1-2, one embodiment provided by the utility model: a coaxial ring lower installation structure, comprising a base 1, a hole is formed in the base 1, an excess flange 6 is arranged in the hole, a pull rod 8 is arranged in the excess flange 6, a gasket 9 is arranged on the pull rod 8, a force nut 10 is arranged below the gasket 9, a screw 11 is arranged below the force nut 10, a coaxial ring 5 is arranged above the excess flange 6, a force sensor 2 is arranged above the coaxial ring 5, the detection end of the force sensor 2 is fixedly connected with a hydraulic clamp 3, a sample 4 is clamped on the hydraulic clamp 3, the coaxial ring 5 and the force sensor 2 are connected through the pull rod 8 first, then the excess flange 6 and the gasket 9 are connected at the bottom end of the pull rod 8 and connected with the force nut 10 through a threaded connection, and then the whole is installed on the base 1.
[0016] One end of the pull rod 8 penetrates the coaxial ring 5, the pull rod 8 is connected with the coaxial ring 5 and the force sensor 2 through the threaded connection, so as to form an integral whole; the excess flange 6 is connected with the base 1 through the fastening screw 7, and the integral whole can be installed on the base 1 after the connection is completed; the force sensor 2, the sample 4, the coaxial ring 5, the excess flange 6, the screw 7, the pull rod 8, the gasket 9, the heavy nut 10 and the screw 11 form an integral whole, and the integral whole has sufficient operation space for tightening the heavy nut 10 and the screw 11 before being installed in the base 1, so as to reduce the weight of the integral whole.
[0017] Working principle: when installing, the pull rod 8 is connected with the coaxial ring 5 and the force sensor 2, then the excess flange 6 and the gasket 9 are connected at the bottom end of the pull rod 8, and finally the threaded connection is connected with the heavy nut 10, so that the integral assembly is completed, and finally the fastening screw 7 is connected with the base 1 to complete the integral installation.
Claims
1. An undermounting structure of a coaxiality ring comprising a base (1), characterized in that: The base (1) is provided with a hole, the hole is provided with an excess flange (6), the excess flange (6) is provided with a pull rod (8), the pull rod (8) is provided with a gasket (9), the gasket (9) is provided with a heavy nut (10) below, the heavy nut (10) is provided with a screw (11) below, the excess flange (6) is provided with a coaxial ring (5) above, the coaxial ring (5) is provided with a force sensor (2) above, the detection end of the force sensor (2) is fixedly connected with a hydraulic clamp (3), and the hydraulic clamp (3) clamps a sample (4).
2. The undermount mounting structure for a concentricity ring of claim 1, wherein: One end of the pull rod (8) penetrates the coaxial ring (5), and the pull rod (8) is connected with the force sensor (2) through threads.
3. The undermount mounting structure for a concentricity ring of claim 1, wherein: The excess flange (6) is connected with the base (1) through a fastening screw (7).
4. The undermount mounting structure for a concentricity ring of claim 1, wherein: The force sensor (2), the sample (4), the coaxial ring (5), the excess flange (6), the fastening screw (7), the pull rod (8), the gasket (9), the heavy nut (10) and the screw (11) form an integral whole.