CN209148448U - A kind of modulus measurer - Google Patents

A kind of modulus measurer Download PDF

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Publication number
CN209148448U
CN209148448U CN201821847192.XU CN201821847192U CN209148448U CN 209148448 U CN209148448 U CN 209148448U CN 201821847192 U CN201821847192 U CN 201821847192U CN 209148448 U CN209148448 U CN 209148448U
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CN
China
Prior art keywords
wire
hall element
measured
counterweight
glass plate
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Expired - Fee Related
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CN201821847192.XU
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Chinese (zh)
Inventor
刘丹
胡智伟
肖鹏程
熊伟钉
胡森
冯国强
李银银
汪晓琪
喻明杨
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Hubei University of Education
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Hubei University of Education
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Priority to CN201821847192.XU priority Critical patent/CN209148448U/en
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Publication of CN209148448U publication Critical patent/CN209148448U/en
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Abstract

The utility model relates to a kind of modulus measurers, including bracket, metal wire fixing device, wire to be measured, counterweight support, counterweight, level modulation screw platform and micro-displacement detection device, it is characterised in that: the metal wire fixing device is located at cantilever tip;One end of the wire to be measured is fixed by metal wire fixing device with bracket;The counterweight support is fixedly connected with the other end of wire to be measured;The counterweight can be placed in counterweight support, and pulling force suffered by wire to be measured is changed;The level modulation screw platform is located at position among bracket;The micro-displacement detection device is located on level modulation screw platform;When increasing counterweight into counterweight support, deformation occurs for wire to be measured, is changed into the displacement of Hall element by lever amplification, and displacement of the Hall element in magnet steel shows that cost is cheaper by digital voltage display, operates more simple.

Description

A kind of modulus measurer
Technical field
The utility model relates to a kind of modulus measurers.
Background technique
Under external force, the change in shape that solid is occurred becomes deformation.It can be divided into elastic deformation and plastic deformation Two kinds.In this experiment, wire elastic deformation is only studied, for this purpose, the size of external force should be controlled, after guaranteeing that external force is removed, Object resilient.
Simplest deformation is wire by the elongation and shortening after external force.Metal filament length L, sectional area S, along length Direction exerts a force after F, and the elongation Δ L of object has then in the elastic limit of wire:
E is called Young's modulus of elasticity by we.In physical test, often by stripe object (such as steel wire, metallic rod) edge Longitudinal elasticity modulus is Young's modulus.
Pulling method is that fixed counterweight is cooperated to apply pulling force to wire using hook, then amplifies wire using optical lever Chroococcus minutus and measure.Optical lever method tester is disadvantageous in that:
1, wire can all be swung after changing counterbalance mass every time, can be measured after must settling out to it, Therefore larger by environmental influence, some small vibrations and the flowing of biggish air can all impact experiment;
2, when being measured with optical lever, it is limited by the bright intensity of environment, while when finding graduated scale with telescope, operation Difficulty is larger, takes a long time.
Utility model content
The purpose of this utility model is to provide a kind of modulus measurers, at least one side to solve the above problems Face.
In order to realize that technical solution used by the purpose of this utility model is: a kind of modulus measurer, including branch Frame, metal wire fixing device, wire to be measured, counterweight support, counterweight, level modulation screw platform and micro-displacement detection device, It is characterized by: the metal wire fixing device is located at cantilever tip;One end of the wire to be measured is fixed by wire Device is fixed with bracket;The counterweight support is fixedly connected with the other end of wire to be measured;The counterweight can be placed and counterweight support It is interior, change pulling force suffered by wire to be measured;The level modulation screw platform is located at position among bracket;The micro-displacement inspection Survey device be located on level modulation screw platform, micro-displacement detection device include glass plate box, wire irony folder, lever, Hall element, digital voltage display and power supply with pressure stabilizing and boosting, the glass plate box are located at horizontal adjust On screw-making platform;Wire irony folder is located in glass plate box, for pass through the wire to be measured in glass plate box It is fixedly connected;The shorter one end of the lever arm of force is fixedly connected with wire irony folder;One end of the Hall element and thick stick The longer one end of stick force arm is fixedly connected, and the other end of Hall element is equipped with a magnet steel;The digital voltage display with suddenly You connect element, and digital voltage display includes digital voltmeter and Voltage stabilizing module, and the digital voltmeter and Hall element connect It connects;One end of the Voltage stabilizing module is connect with Hall element, and the other end of Voltage stabilizing module is connect with power supply;When to counterweight support When interior increase counterweight, deformation occurs for wire to be measured, is changed into the displacement of Hall element by lever amplification, Hall element is in magnetic Displacement in steel is shown by digital voltage display.
Further, the glass plate box is cuboid, and the front box face center of glass plate box is provided with rectangular window, size Just accommodating a digital voltage display inlays it wherein;There is its face bottom surface of an aperture to have at the top of glass plate box simultaneously One circular window, wherein there are also row's equidistant circular holes.
Further, the power supply is by two section 1.5V dry cell batteries at the battery is loaded on a battery case with switch It is interior.
Further, the lever, Hall element, digital voltage display and power supply are respectively positioned in glass plate box.
The utility model has the beneficial effects that the utility model is intended to improve the measurement method to Young's modulus, it only need to be in original On the basis of having laboratory apparatus, optical lever and telescope are removed, this laboratory apparatus is installed i.e. on level modulation screw platform It can.The big problem of optical lever operation difficulty before the utility model effective solution, at the same it is time-consuming less, and phenomenon is more straight It sees, the deformation quantity of wire to be measured is passed through into corresponding Hall element voltage in time and is shown by digital voltage display, Cost is cheaper, and operation is more simple, only needs swing weight-adding.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model pulling method modulus measurer.
Fig. 2 is that the internal structure of the utility model pulling method modulus measurer is intended to.
In figure, 1- metal wire fixing device, 2- bracket, 3- wire to be measured, 4- micro-displacement detection device, 5- rectangular window Mouthful, 6- level modulation screw platform, 7- counterweight, 8- counterweight support, 9- digital voltmeter, 10- wire irony folder, 11- lever, 12- Hall element, 13- Voltage stabilizing module, 14- magnet steel, 15- power supply.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
A kind of modulus measurer structure of embodiment of the utility model is schematically shown as shown in Figure 1, Figure 2.
As shown in Figure 1 and Figure 2, a kind of modulus measurer, including bracket (2), metal wire fixing device (1), gold to be measured Belong to silk (3), counterweight support (8), counterweight (7), level modulation screw platform (6) and micro-displacement detection device (4), feature exists In: the metal wire fixing device (1) is located at bracket (2) top;One end of the wire to be measured (3) is fixed by wire Device (1) and bracket (2) are fixed;The counterweight support (8) is fixedly connected with the other end of wire to be measured (3);The counterweight (7) It can place in counterweight support (8), change pulling force suffered by wire to be measured (3);The level modulation screw platform (6) is located at bracket (2) intermediate position;The micro-displacement detection device (4) is located on level modulation screw platform (6), micro-displacement detection device It (4) include glass plate box, wire irony folder (10), lever (11), Hall element (12), the number with pressure stabilizing and boosting Word voltage display and power supply (15), the glass plate box are located on level modulation screw platform (6);The wire iron Matter folder (10) is located in glass plate box, for being fixedly connected with by the wire to be measured (3) in glass plate box;The lever (11) the shorter one end of the arm of force is fixedly connected with wire irony folder (10);One end and lever (11) of the Hall element (12) The longer one end of the arm of force is fixedly connected, and the other end of Hall element (12) is equipped with a magnet steel (14);The digital voltage is shown Device is connect with Hall element (12), and digital voltage display includes digital voltmeter (9) and Voltage stabilizing module (13), the number electricity Pressure table (9) is connect with Hall element (12);One end of the Voltage stabilizing module (13) is connect with Hall element (12), Voltage stabilizing module (13) the other end is connect with power supply (15);When increasing counterweight (7) into counterweight support (8), wire (3) to be measured occurs Deformation, is changed into the displacement of Hall element (12) by lever (11) amplification, and Hall element (12) (generates uniform in magnet steel (14) Gradient magnetic) in displacement shown by digital voltage display, read digital voltage value can be obtained according to corresponding relation formula Wire deformation quantity out.
As shown in Figure 1 and Figure 2, the glass plate box is cuboid, and the front box face center of glass plate box is provided with rectangular window (5), size, which just accommodates a digital voltage display, inlays it wherein;Have at the top of glass plate box simultaneously an aperture its There is a circular window in face bottom surface, wherein there are also row's equidistant circular holes, makes wire to be measured (3) that can pass through glass plate box well It is fixedly connected with counterweight support (8) below bracket (2).
As shown in Figure 1 and Figure 2, power supply (15) the You Liangjie 1.5V dry cell batteries are at the battery has loaded on one and opens In the battery case of pass, the work for digital voltage display provides electric energy.
As shown in Figure 1 and Figure 2, the lever (11), Hall element (12), digital voltage display and power supply (15) It is respectively positioned in glass plate box.
When using the utility model, by increasing and decreasing counterweight (7) in counterweight support (8), and make wire to be measured (3) that shape occurs Become, the deformation of wire (3) to be measured is changed into the displacement of Hall element (12) by lever (11) amplification, and Hall element (12) exists Displacement in magnet steel (14) (generating uniform gradient magnetic field) is shown in digital voltage by corresponding Hall element (12) voltage and shows Show on device, then reads voltage value, according to corresponding relation formula, you can get it wire (3) deformation quantity to be measured.Whole process only needs Increase and decrease counterweight (7), it is easy to operate, it is time-consuming shorter, while phenomenon can be very intuitive.
It is worth noting that: the meaning of " plurality " is two or more in the description of the present invention, unless separately There is clearly specific restriction.In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", The terms such as " connection ", " fixation " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or one Ground connection;It can be mechanical connection, for the ordinary skill in the art, can understand above-mentioned art as the case may be The concrete meaning of language in the present invention.
It is obvious to a person skilled in the art that the utility model patent is not limited to the thin of above-mentioned exemplary embodiment Section, and without departing substantially from the spirit or essential attributes of the utility model patent, it can be real in other specific forms Existing the utility model patent.It therefore, in all respects, the embodiments should be taken as exemplary, and is non-limit Property processed, the range of the utility model patent is indicated by the appended claims rather than the foregoing description, it is intended that power will be fallen in Obtaining for benefit requirement is included in the utility model patent with all changes in the meaning and scope of important document.It should not be by claim In any appended drawing reference be construed as limiting the claims involved.

Claims (4)

1. a kind of modulus measurer, including bracket, metal wire fixing device, wire to be measured, counterweight support, counterweight, level Modulate screw platform and micro-displacement detection device, it is characterised in that: the metal wire fixing device is located at cantilever tip;It is described One end of wire to be measured is fixed by metal wire fixing device with bracket;The other end of the counterweight support and wire to be measured is solid Fixed connection;The counterweight can be placed in counterweight support, and pulling force suffered by wire to be measured is changed;The level modulation screw platform position The position among bracket;The micro-displacement detection device is located on level modulation screw platform, micro-displacement detection device packet Include glass plate box, wire irony folder, lever, Hall element, the digital voltage display with pressure stabilizing and boosting and confession Power supply, the glass plate box are located on level modulation screw platform;The wire irony folder is located in glass plate box, is used for It is fixedly connected with by the wire to be measured in glass plate box;The shorter one end of the lever arm of force and wire irony are clamping fixed Connection;One end of the Hall element is fixedly connected with the longer one end of lever arm of force, and the other end of Hall element is equipped with one Magnet steel;The digital voltage display is connect with Hall element, and digital voltage display includes digital voltmeter and Voltage stabilizing module, The digital voltmeter is connect with Hall element;One end of the Voltage stabilizing module is connect with Hall element, Voltage stabilizing module it is another End is connect with power supply;When increasing counterweight into counterweight support, deformation occurs for wire to be measured, is changed by lever amplification The displacement of Hall element, displacement of the Hall element in magnet steel are shown by digital voltage display.
2. a kind of modulus measurer according to claim 1, it is characterised in that: the glass plate box is cuboid, The front box face center of glass plate box is provided with rectangular window, and size, which just accommodates a digital voltage display, makes it inlay it In;There is its face bottom surface of an aperture to have a circular window at the top of glass plate box simultaneously, wherein there are also row's equidistant circular holes.
3. a kind of modulus measurer according to claim 1, it is characterised in that: the power supply is by two section 1.5V Dry cell batteries are at the battery is loaded in a battery case with switch.
4. a kind of modulus measurer according to claim 1, it is characterised in that: the lever, Hall element, number Voltage display and power supply are respectively positioned in glass plate box.
CN201821847192.XU 2018-11-10 2018-11-10 A kind of modulus measurer Expired - Fee Related CN209148448U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821847192.XU CN209148448U (en) 2018-11-10 2018-11-10 A kind of modulus measurer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821847192.XU CN209148448U (en) 2018-11-10 2018-11-10 A kind of modulus measurer

Publications (1)

Publication Number Publication Date
CN209148448U true CN209148448U (en) 2019-07-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110823944A (en) * 2019-10-18 2020-02-21 航天材料及工艺研究所 High-temperature thermal expansion performance testing device in high-heat-conduction high-modulus carbon fiber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110823944A (en) * 2019-10-18 2020-02-21 航天材料及工艺研究所 High-temperature thermal expansion performance testing device in high-heat-conduction high-modulus carbon fiber

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20190723

Termination date: 20201110