CN211262980U - Elasticity modulus measuring apparatu - Google Patents

Abstract

The utility model relates to the technical field of physical experiment devices, in particular to an elastic modulus measuring instrument. It includes a modulus display connector and a medium container filled with liquid medium, which are arranged in parallel along the vertical direction, a piston that is sheathed in the medium container by the top port of the medium container and is in sliding contact with the inner peripheral wall of the medium container. A weight holder with the upper surface in contact for connection with the bottom end of the measured object, a measured object holder placed just above the weight holder for connection with the top end of the measured object, and a measured object holder for connecting the modulus A medium communication pipe is shown in which the bottom port of the communication device communicates with the bottom port of the medium container. The utility model can perform intuitive, convenient, fast and accurate measurement of the elastic modulus of the measured object according to the principle of the connector; the utility model has the advantages of simple structure, convenient disassembly and assembly operation, low cost, and can effectively satisfy the measurement of the elastic modulus in various fields. need.

Description

A kind of elastic modulus measuring instrument

technical field

The utility model relates to the technical field of physical experiment devices, in particular to an elastic modulus measuring instrument.

Background technique

Elastic modulus (also known as Young's modulus) is an important physical quantity that reflects the ability of solid materials to resist deformation, and is also an important basis for selecting engineering materials. At present, both in the process of physical experiment teaching or in the process of engineering technology experiments, the optical lever measurement system (or device) is usually used to measure the elastic modulus of materials by the optical lever method; among them, the optical lever measurement system (or device) It is mainly composed of a telescope, a bracket, a small reflecting plane mirror, a wire fixing piece, a ruler, a weight, a vernier caliper, a meter ruler, etc. During the measurement process, the telescope is used to observe the image of the ruler, and then the weight is gradually added to make the wire elongated. Then, the Young's modulus of elasticity of the metal wire is measured according to the relationship between the small elongation of the metal wire, the rotation angle of the small reflecting plane mirror and the reading difference of the scale in the telescope image. However, this device generally has the following defects: 1. The structure is complex, the cost is high, the operation is cumbersome, and the magnification is small; 2. The force applied each time the weight is increased is prone to sudden changes, which has a greater impact on the measured object. , which affects the measurement accuracy; 3. It is difficult to maintain the balance of the force during the operation, and the continuous operability is poor.

Utility model content

Aiming at the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide an elastic modulus measuring instrument.

In order to achieve the above purpose, the utility model adopts the following technical solutions:

An elastic modulus measuring instrument, which comprises a modulus display communication device arranged along the vertical direction, a medium container arranged in parallel with the modulus display communication device and filled with a liquid medium, and a top port sleeve of the medium container. A piston in the medium container and in sliding contact with the inner peripheral wall of the medium container; A test object holder for connecting with the top end of the test object and a medium communication pipe for connecting the bottom port of the modulus display communication device with the bottom port of the medium container.

Preferably, the liquid medium is castor oil.

Preferably, the modulus display communicating device includes a scale plate arranged in a vertical direction and a communication pipe installed on the scale plate in a vertical direction, and a scale table arranged in parallel with the communication pipe is arranged on the scale plate, The bottom port of the communication pipe is connected with the bottom port of the medium container through the medium communication pipe, and the top port is communicated with the outside.

Preferably, the communication pipe is a tubular structure made of transparent material.

Preferably, the inner diameter of the medium container is an integer multiple of the inner diameter of the communication pipe.

Due to the adoption of the above scheme, the present invention can display the volume and modulus of the medium container through the selection and configuration of the volume of the communication connector, so that the tester can intuitively, conveniently and quickly conduct an intuitive, convenient and rapid analysis of the elastic modulus of the tested object according to the principle of the communication device. Accurate measurement; its structure is simple and compact, easy to disassemble and operate, low cost, can effectively meet the measurement needs of elastic modulus in various fields, and has strong practical value and market promotion value.

Description of drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention.

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

As shown in Figure 1, the present embodiment provides an elastic modulus measuring instrument, which includes:

a modulus display connector a, which has a top port and a bottom port, and is arranged in a vertical direction;

A medium container b, which is arranged in parallel with the modulus display communication device a, and the overall shape of the medium container b adopts the same shape as the main part of the modulus display communication device a (such as a cylindrical shape or a circular tube shape, etc. , and has a top port and a bottom port), and the interior of the medium container b is filled with a liquid medium (not marked in the figure);

a piston c, which is sheathed in the medium container b by the top port of the medium container b and is in sliding contact with the inner peripheral wall of the medium container b;

a weight holder d, which is in contact with the upper surface of the piston c for connecting with the bottom end of the measured object A such as a steel wire;

A measured object holder e, which is placed just above the weight holder d for connecting with the top of the measured object A such as steel wire, and its specific structure can be selected according to actual needs, such as clamps, hanging appliances, etc. Wait;

and a medium communication pipe f, which can be made of materials such as plastics for connecting the bottom port of the modulus display connector a with the bottom port of the medium container b.

The measuring instrument of this embodiment can measure the elastic modulus of the measured object A intuitively, conveniently, quickly and accurately according to the principle of the connector; specifically: take the measured object A as a steel wire as an example, hang the steel wire on the measured object After adding the weight B to the weight holder d between the object holder e and the weight holder d, the weight holder d will push the piston c to move down (at the same time, the steel wire will be stretched), Therefore, the liquid medium in the medium container b is squeezed into the modulus display communication device a through the medium communication pipe f. Since the amount of the piston c moving down is the elongation of the steel wire, and this elongation will pass through the The modulus shows that the amount of liquid medium in the connector a is directly reflected. In the specific design, the volume and modulus of the medium container b can be used to display the selected configuration of the volume of the connector a (such as the inner diameter of the medium container b and the The modulus displays the inner diameter of the connector a (set a fixed multiple relationship), and the tester can obtain the elastic modulus value accurately, quickly and intuitively; at the same time, the whole measuring instrument has a simple structure, convenient disassembly and assembly operations, and low cost, which can effectively meet various fields. Internal requirements for the measurement of elastic modulus.

As a preferred solution, the liquid medium in this embodiment is preferably castor oil, so that the castor oil has the characteristics of good fluidity, low friction coefficient and certain color, which can effectively reduce the friction between the piston c and the medium container b. Friction, and it is convenient for testers to read the test value. Of course, other liquids with similar properties can also be used as the liquid medium.

In order to simplify the structure of the entire measuring instrument to the greatest extent, and to provide favorable conditions for testers to read the test values intuitively, quickly and accurately, the modulus display connector a of this embodiment includes a scale plate 10 arranged in the vertical direction and The communication pipe 20 installed on the scale plate 10 along the vertical direction, the scale plate 10 is provided with a scale 30 distributed in parallel with the communication pipe 20, and the bottom port of the communication pipe 20 is connected to the medium container through the medium communication pipe f The bottom port of b is connected, and the top port is communicated with the outside. Therefore, after the liquid medium is squeezed into the communication pipe 20, the tester can quickly obtain the test value through the scale 30 corresponding to the liquid level of the communication pipe 20, so as to pass the gap between the medium container b and the communication pipe 20. The inner diameter configuration relationship can finally obtain the elastic modulus value of the steel wire.

As a preferred solution, the communication pipe 20 in this embodiment may adopt a tubular structure made of transparent materials such as plastic and glass according to specific conditions.

In addition, in order to increase the magnification, the inner diameter of the medium container b in this embodiment is an integer multiple (eg, 10 times, etc.) of the inner diameter of the communication pipe 20 . Therefore, when the piston c pushes the liquid medium to move down a small amount in the medium container b, according to the principle of the communicating device, the liquid level in the communicating pipe 20 will rise by a larger amount. The multiple relationship between the inner diameters can multiply the elongation of the steel wire, which is convenient for the tester to obtain the corresponding test value.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and accompanying drawings of the present invention, or directly or indirectly applied to Other related technical fields are similarly included in the scope of patent protection of the present invention.

Claims (4)

1. An elasticity modulus measuring instrument, characterized in that: the modulus display communicating device comprises a modulus display communicating device arranged along the vertical direction, a medium container which is arranged in parallel with the modulus display communicating device and is filled with liquid medium, a piston which is sleeved in the medium container through a top end opening of the medium container and is in sliding contact with the inner peripheral wall of the medium container, a weight support which is in contact with the upper surface of the piston and is used for being connected with the bottom end of a measured object, a measured object fixing device which is arranged right above the weight support and is used for being connected with the top end of the measured object, and a medium communicating pipe which is used for communicating the bottom end opening of the modulus display communicating device with the bottom end opening of the medium container, wherein the medium communicating pipe is made of rubber materials, and the liquid medium is castor oil.

2. An elastic modulus measuring instrument as claimed in claim 1, wherein: the modulus display communicating vessel comprises a scale plate arranged in the vertical direction and a communicating pipe arranged on the scale plate in the vertical direction, a scale meter which is distributed in parallel with the communicating pipe is arranged on the scale plate, the bottom port of the communicating pipe is connected with the bottom port of the medium container through the medium communicating pipe, and the top port of the communicating pipe is communicated with the outside.

3. An elastic modulus measuring instrument as claimed in claim 2, wherein: the communicating pipe is a tubular structure body made of transparent materials.

4. An elastic modulus measuring instrument as claimed in claim 2, wherein: the inner diameter of the medium container is integral multiple of the inner diameter of the communicating pipe.

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