CN202471521U - Metal wire elastic modulus gauge - Google Patents

Abstract

The utility model discloses a metal wire elastic modulus measuring instrument, which comprises a base, on which a laser is arranged, and on the base in front of the laser, a beam expander, a beam splitter, a compensation plate and a base are sequentially arranged, and on the base A first reflector is installed through the slideway, a return spring is arranged between the first reflector and the bottom plate, a rotating rod is installed on the bottom plate through a rotating shaft, the first reflector is connected with a push rod, and the end of the push rod is connected to the rotating rod One side of the side of one end leans against each other, a fixed seat for clamping the measured metal wire is fixed on the base, a metal wire clamping block is provided on the rotating rod, and a force applying device and a force measuring device for the rotating rod are arranged on the base A second reflecting mirror matched with the beam splitter is arranged on the side of the base, and an observation screen is arranged on the side of the base opposite to the second reflecting mirror. Compared with the prior art, the utility model has the advantages of simple structure, convenient operation, balanced force application and good stability.

Description

Wire elastic modulus measuring instrument

technical field

The utility model relates to a measuring instrument, in particular to a metal wire elastic modulus measuring instrument. the

Background technique

The Young's modulus of elasticity of a material is an important physical quantity describing the deformation ability of a solid material, and it is also an important physical quantity for selecting materials in engineering technology. the

The measurement of Young's modulus of elasticity in the prior art mainly utilizes the optical lever method, and the optical lever method measuring device includes a telescope, a support, a small reflecting plane mirror, a wire fixture, a scale, a weight, a vernier caliper, a meter ruler, etc., and the measurement process Observe the image of the scale from the telescope, and then gradually add weights to make the wire stretch, and measure the value of the wire according to the relationship between the tiny elongation of the wire, the angle at which the small reflecting plane mirror turns, and the reading difference of the scale in the telescope image. Young's modulus of elasticity. The disadvantage is that it is not easy to maintain the balance of the spinning force during the operation, and the continuity is poor. Every time the weight is added, the applied force will change suddenly, which has a great impact on the measured object. the

Contents of the invention

The purpose of the utility model is to provide a metal wire elastic modulus measuring instrument with simple structure, easy operation, balanced force in the measurement process and good stability, so as to overcome the deficiencies of the prior art. the

The metal wire elastic modulus measuring instrument of the utility model includes a base, on which a laser is arranged, and a beam expander, a beam splitter, a compensation plate, and a base are sequentially arranged on the base in front of the laser, and a slideway is passed on the base. A first reflector is installed, a return spring is arranged between the first reflector and the base plate, and a rotating rod is installed on the base plate through a rotating shaft. There is a fixed base for clamping the measured metal wire on the base, a metal wire clamping block on the rotating rod, a force applying device and a force measuring device on the rotating rod on the base, and a force measuring device on the base. There is a second reflecting mirror matched with the beam splitter on the side of the second reflecting mirror, and an observation screen is arranged at the side of the base opposite to the second reflecting mirror. the

In the metal wire elastic modulus measuring instrument of the present utility model, the force applying device is fixed with a screw nut on the base, and the end of the screw rod matched with the screw nut leans against the other end side of the rotating rod; The force measuring device is provided with a clamping seat on the base, and a force measuring gauge is connected between the clamping seat and the rotating rod. the

The metal wire elastic modulus measuring instrument of the utility model, wherein said force applying device is that a pulley is installed on the base through a bracket, a pull rope is connected to the rotating rod, the pull rope bypasses the pulley and the other end is connected with a load-bearing box. the

Compared with the prior art, the metal wire elastic modulus measuring instrument of the utility model has the advantages of simple structure, convenient operation, balanced force application and good stability. the

Description of drawings

Fig. 1 is the structural representation of embodiment 1 of the upper body of the utility model;

Fig. 2 is a schematic structural view of Example 2 of the upper body embodiment of the utility model.

Detailed ways

Embodiment 1: As shown in Figure 1: 2 is a base, a laser 1 is installed on the base 2, and a beam expander 3, a beam splitter 6, a compensation plate 7, and a base 16 are sequentially arranged on the base 2 in front of the laser 1 , the beam expander 3, the beam splitter 6, and the compensation plate 7 are all installed on the base 2 through the connecting frame. The bottom plate 16 and the base 2 are bolted or welded. A slideway 19 is fixed on the base plate 16, the first reflector 18 is installed on the mirror frame, and a slide block matched with the slideway 19 is arranged below the mirror frame, so that the mirror frame and the first reflector 18 can slide relative to the base plate 16 . A return spring 17 is provided between the first reflector 18 and the bottom plate 16, and the return spring 17 always pulls the first reflector 18 to the right dead center position. A rotating rod 13 is installed on the base plate 16 through a rotating shaft 14 , and the rotating rod 13 can rotate relative to the base plate 16 through the rotating shaft 14 . The mirror frame connected with the first reflecting mirror 18 is connected with a push rod 15, and the end of the push rod 15 abuts against one end side of the rotating rod 13. When the rotating rod 13 is rotated, the rotating rod 13 can be pressed against the pushing rod 15. , so that the mirror frame and the first reflector 18 on the mirror frame slide on the slideway 19, at this time the return spring 17 is elongated, and when the rotating rod 13 returns to its original position, the first reflector 18 under the action of the return spring 17 reset. The base 2 is fixed with a fixing base 4 for clamping the metal wire to be tested. The fixing base 4 and the base 2 are fixedly connected by bolts. The fixing base 4 can be equipped with a top wire for clamping one end of the metal wire under test . A wire clamping block 28 is arranged on the rotating rod 13, and the wire clamping block 28 is fixedly connected with the rotating rod 13 and equipped with a top wire for clamping the end of the measured wire. The base 2 is provided with a force-applying device and a force-measuring device for the rotating rod 13. The force-applying device is that a screw nut 10 is fixed on the base 2, and the end of the screw rod 12 matched with the screw nut 10 leans against the rotating rod 13. side of the other end. The force-measuring device is that a clamping seat 9 is fixedly installed on the base 2, and a force-measuring gauge 11 is connected between the clamping seat 9 and the rotating rod 13. On the side of the base 2 there is a second reflector 5 matched with the beam splitter 6 , and an observation screen 20 is arranged on the side of the base 2 opposite to the second reflector 5 . the

The working process is as follows: fix one end of the measured metal wire 8 on the fixed seat 4, and fix the other end on the metal wire clamping block 28, turn the screw mandrel 12, the screw mandrel 12 moves to the right, and presses against the rotating rod 13, so that The rotating rod 13 rotates, and the other end of the rotating rod 13 leans against the push rod 15, so that the first reflector 18 moves to the left along the slideway 19, and the metal wire 8 is elongated at the same time, and the force gauge 11 can read the applied force. At this time, the light emitted by the laser 1 enters the beam splitter 6 through the beam expander 3, part of the light is reflected by the second mirror 5, and the other part of the light passes through the beam splitter 6 and is reflected by the second mirror 18 through the compensation plate 7. The observation screen 20 observes the "indentation" and "emergence" of the stripes, that is, the change of the halo number, and the Young's modulus of elasticity of the metal wire can be obtained according to the above parameters. the

Embodiment 2: As shown in Figure 2: the difference from Embodiment 1 is that the force applied to the rotating rod 13 is different, and a pulley 26 is installed on the end face of the base 2 through a connecting frame, and one end of the stay rope 25 is fixed to the rotating rod 13 Connection, the stay rope 25 goes around the pulley 26 and the other end is connected to the load-bearing box 27. When applying force, gradually add water or quicksand to the load-bearing box 27. purpose of each parameter. the

Claims (3)

1. elastic modulus of metal filament measuring instrument; It is characterized in that: comprise base (2); On base (2), be provided with laser instrument (1); Be positioned in the place ahead of laser instrument (1) and be provided with beam expanding lens (3), beam-splitter (6), compensating plate (7), base plate (16) on the base (2) successively, go up at base plate (16) and first catoptron (18) is installed, be provided with back-moving spring (17) between first catoptron (18) and the base plate (16) through slideway (19); Upward bull stick (13) is installed at base plate (16) through rotating shaft (14); First catoptron (18) is connected with push rod (15), and the termination of push rod (15) leans with an end side surface of bull stick (13) mutually, on base (2), is fixed with to clamp tested holder wiry (4); On bull stick (13), be provided with tinsel clamp (28); On base (2), be provided with force application apparatus and device for measuring force, second catoptron (5) that matches with beam-splitter (6) arranged, be provided with film viewing screen (20) in the side edge of the opposite base (2) of second catoptron (5) at the side of base (2) to bull stick (13).

2. elastic modulus of metal filament measuring instrument according to claim 1; It is characterized in that: described force application apparatus is on base (2), to be fixed with screw (10), and the termination of the screw mandrel (12) that matches with screw (10) leans the other end side at bull stick (13); Described device for measuring force is on base (2), to be provided with clamping seats (9), is connected to dynamometry table (11) between clamping seats (9) and the bull stick (13).

3. elastic modulus of metal filament measuring instrument according to claim 1; It is characterized in that: described force application apparatus is to go up at base (2) through support pulley (26) to be installed; Be connected to stay cord (25) at bull stick (13), pulley (26) walked around by stay cord (25) and the other end is connected to support box (27); Described device for measuring force is on base (2), to be provided with clamping seats (9), is connected to dynamometry table (11) between clamping seats (9) and the bull stick (13).

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