CN219416978U - Light-load combined stretching and compressing experimental device - Google Patents

Abstract

The utility model provides a light-load combined stretching and compression experimental device which comprises a combined rack, a stretching and compression experimental assembly, a computer and a strain gauge, wherein the combined rack is arranged on the combined rack; the top surface of the combined rack is provided with two first guide rails and two second guide rails which are parallel to each other; the bottom surface of the combined rack is provided with a third guide rail corresponding to the first guide rail and a fourth guide rail corresponding to the second guide rail; the two stretching and compression experiment components are adjustably and detachably connected between the first guide rail and the third guide rail, and the other stretching and compression experiment component is adjustably connected between the second guide rail and the fourth guide rail; the computer is connected with the strain gauge, and the computer and the strain gauge are connected with the tensile compression experimental assembly. The light-load combined stretching and compressing experimental device provided by the utility model has the advantages that the load is below 5kN, stretching and compressing experiments of materials such as metal and nonmetal of nonstandard samples can be performed, the stretching experiment testing function in the material mechanics experiment is especially met, the structure of the experimental bench is simple, the weight is light, the operation is convenient, and the cost is low.

Description

Light-load combined stretching and compressing experimental device

Technical Field

The utility model relates to the technical field of stretching and compression experimental devices, in particular to a light-load combined stretching and compression experimental device.

Background

The load of an electronic universal testing machine used for a stretching experiment and a compression experiment in a material mechanics experiment is generally 100kN, a national standard sample with the diameter of 10mm is adopted, the testing machine is generally large in size, heavy in weight, high in price and unequal in price of tens of thousands or hundreds of thousands. Popularity is not fully realized at various universities.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a light-load combined stretching and compressing experimental device, wherein the load is below 5kN, stretching and compressing experiments of materials such as metal, nonmetal and the like of non-standard samples can be performed, and particularly the stretching experiment testing function in the material mechanics experiment is met, and the experimental bench has the advantages of simple structure, light weight, convenience in operation and low cost.

In order to achieve the above purpose, the utility model provides a light load combined stretching and compression experimental device, which comprises a combined frame, a three stretching and compression experimental assembly, a computer and a strain gauge; the combined rack is cuboid, and two first guide rails and two second guide rails which are parallel to each other are arranged on the top surface of the combined rack; a third guide rail corresponding to the first guide rail and a fourth guide rail corresponding to the second guide rail are arranged on the bottom surface of the combined rack; the two tensile compression experiment components are adjustably and detachably connected between the first guide rail and the third guide rail, and the other tensile compression experiment component is adjustably connected between the second guide rail and the fourth guide rail; the computer is connected with the strain gauge, and the computer and the strain gauge are connected with the tensile compression experiment assembly.

Preferably, each tensile compression experimental assembly comprises a loading device, a tensile pressure sensor, two tensile clamps, a displacement measuring clamp, a mechanical displacement sensor, a laser displacement sensor and a clamp platform; the upper part of the loading device is adjustably and detachably connected with the first guide rail or the second guide rail; the bottom of the loading device is connected with the stretching clamp through the tension pressure sensor; the clamp platform is connected to the third guide rail or the fourth guide rail in a position-adjustable manner corresponding to the loading device; the other stretching clamp is connected to the clamp platform, and the positions of the two stretching clamps correspond to each other; one end of the displacement measuring clamp is connected with one stretching clamp above the displacement measuring clamp; the laser displacement sensor and the mechanical displacement sensor are arranged on the clamp platform; the laser displacement sensor is arranged towards the displacement measuring clamp; the pointer of the mechanical displacement sensor is propped against the lower surface of the displacement measuring clamp.

Preferably, the loading device is a screw elevator.

Preferably, the device further comprises an extensometer; a sample is clamped between the two stretching clamps of the stretching and compressing experimental assembly; the extensometer is clamped on the sample.

Preferably, the computer connects the screw elevator and the strain gauge; the strain gauge is connected with the tension pressure sensor, the laser displacement sensor, the mechanical displacement sensor and the extensometer.

The utility model adopts the technical proposal, which has the following beneficial effects:

the combination rack is matched with the stretching and compression experiment assembly, can carry out various stretching and compression experiments, and is a small-sized electronic universal tester. The test bed mainly carries out experiments with the load below 5KN, particularly meets the tensile test function in the material mechanics experiments, and has the advantages of simple structure, lighter weight, convenient operation and lower cost. The cooperation of the tensile compression experimental assembly, the computer and the strain gauge can realize the computer processing of experimental data, and provides a hardware basis for obtaining a required force displacement curve, a required force deformation curve and a required stress strain curve.

Drawings

FIG. 1 is a schematic structural diagram of a light-load combined tensile compression experimental device according to an embodiment of the utility model;

FIG. 2 is a top view of a light load combined tensile compression experimental apparatus according to an embodiment of the utility model;

fig. 3 is a cross-sectional view of a structural aluminum profile according to an embodiment of the present utility model.

Detailed Description

The following description of the preferred embodiments of the present utility model will be given with reference to fig. 1 to 3 of the accompanying drawings, so that the functions and features of the present utility model can be better understood.

Referring to fig. 1 to 3, a light load combined stretching and compression experimental device in an embodiment of the utility model includes a combined frame 1, a three stretching and compression experimental assembly, a computer and a strain gauge; the combined rack 1 is in a cuboid shape, and the top surface of the combined rack 1 is provided with two first guide rails 11 and two second guide rails 12 which are parallel to each other; the bottom surface of the combined rack 1 is provided with a third guide rail corresponding to the first guide rail 11 and a fourth guide rail corresponding to the second guide rail 12; the two tensile compression experiment components are adjustably and detachably connected between the first guide rail 11 and the third guide rail, and the other tensile compression experiment component is adjustably connected between the second guide rail 12 and the fourth guide rail; the computer is connected with the strain gauge, and the computer and the strain gauge are connected with the tensile compression experimental assembly.

Each tensile compression experimental assembly comprises a loading device 2, a tensile pressure sensor 3, two tensile clamps, a displacement measuring clamp 9, a mechanical displacement sensor 6, a laser displacement sensor 5 and a clamp platform 4; the upper part of the loading device 2 is adjustably and detachably connected to the first guide rail 11 or the second guide rail 12; the bottom of the loading device 2 is connected with a stretching clamp through a stretching pressure sensor 3; the clamp platform 4 is connected to the third guide rail or the fourth guide rail in a position-adjustable manner corresponding to the position of the loading device 2; the other stretching clamp is connected to the clamp platform 4, and the positions of the two stretching clamps correspond to each other; one end of the displacement measuring clamp 9 is connected with a stretching clamp above; the fixture platform 4 is provided with a laser displacement sensor 5 and a mechanical displacement sensor 6; the laser displacement sensor 5 is arranged towards the displacement measuring clamp 9; the pointer of the mechanical displacement sensor 6 is pushed against the lower surface of the displacement measuring jig 9.

The loading device 2 adopts a screw lifter.

Also comprises an extensometer 7; a sample 8 is clamped between two stretching clamps of the stretching and compressing experimental assembly; the extensometer 7 is clamped on the sample 8.

The computer is connected with the screw lifter and the strain gauge; the strain gauge is connected with a tension pressure sensor 3, a laser displacement sensor 5, a mechanical displacement sensor 6 and an extensometer 7.

According to the light-load combined stretching and compressing experimental device provided by the embodiment of the utility model, the combined frame 1 is formed by splicing and fixing a plurality of structural aluminum profiles, is fixedly connected through bolt corner connectors, and can be reinforced by steel plates. The embodiment adopts a cuboid frame structure, and the frames can be freely combined according to requirements. The cross section of the structural aluminum profile is shown in fig. 3, and grooves on each side of the structural aluminum profile can be used for fixing bolts.

The screw lifter is fixed with the structural aluminum profile through bolts, and can slide along the first guide rail 11 or the second guide rail 12 formed by the grooves after the bolts are loosened. The screw lifter can be placed in a plurality according to the requirements and the length of the combined frame 1. The structural aluminum profiles are preferably 4040 and 4080 in combination, or 3030 and 3060 in combination.

The clamp platform 4 is of a steel plate structure, and a threaded hole for fixing the stretching clamp is formed in the clamp platform. The clamp platform 4 can slide on the combined frame 1 to adjust the position when the bolts are loosened by being fixed on the two structural aluminum profiles through the bolts.

The displacement measuring jig 9 is a rectangular steel plate having a hole at one end.

When the light-load combined tensile compression experimental device is used, the lifting displacement speed of the screw lifter is controlled by the computer, the computer is connected with the strain gauge, the strain gauge dynamically acquires the tensile pressure data of the tensile pressure sensor 3, the displacement data of the laser displacement sensor 5, the displacement data of the mechanical displacement sensor 6 and the deformation data of the extensometer 7, and the strain gauge transmits the data to the computer for data processing, so that a force-displacement curve, a force-deformation curve and a stress-strain curve can be obtained.

The test pieces 8 such as plates, steel wires, copper wires and the like can be stretched by changing different stretching clamps, and functions such as compression experiments, bending experiments and the like can also be performed.

The present utility model has been described in detail with reference to the embodiments of the drawings, and those skilled in the art can make various modifications to the utility model based on the above description. Accordingly, certain details of the illustrated embodiments are not to be taken as limiting the utility model, which is defined by the appended claims.

Claims (5)

1. The light-load combined stretching and compressing experimental device is characterized by comprising a combined frame, three stretching and compressing experimental components, a computer and a strain gauge; the combined rack is cuboid, and two first guide rails and two second guide rails which are parallel to each other are arranged on the top surface of the combined rack; a third guide rail corresponding to the first guide rail and a fourth guide rail corresponding to the second guide rail are arranged on the bottom surface of the combined rack; the two tensile compression experiment components are adjustably and detachably connected between the first guide rail and the third guide rail, and the other tensile compression experiment component is adjustably connected between the second guide rail and the fourth guide rail; the computer is connected with the strain gauge, and the computer and the strain gauge are connected with the tensile compression experiment assembly.

2. The light-load combined tensile compression experimental device according to claim 1, wherein each tensile compression experimental component comprises a loading device, a tensile pressure sensor, two tensile clamps, a displacement measuring clamp, a mechanical displacement sensor, a laser displacement sensor and a clamp platform; the upper part of the loading device is adjustably and detachably connected with the first guide rail or the second guide rail; the bottom of the loading device is connected with the stretching clamp through the tension pressure sensor; the clamp platform is connected to the third guide rail or the fourth guide rail in a position-adjustable manner corresponding to the loading device; the other stretching clamp is connected to the clamp platform, and the positions of the two stretching clamps correspond to each other; one end of the displacement measuring clamp is connected with one stretching clamp above the displacement measuring clamp; the laser displacement sensor and the mechanical displacement sensor are arranged on the clamp platform; the laser displacement sensor is arranged towards the displacement measuring clamp; the pointer of the mechanical displacement sensor is propped against the lower surface of the displacement measuring clamp.

3. The light-load combined stretching and compressing experimental device according to claim 2, wherein the loading device adopts a screw lifter.

4. A light load combined tensile compression experimental device according to claim 3, further comprising an extensometer; a sample is clamped between the two stretching clamps of the stretching and compressing experimental assembly; the extensometer is clamped on the sample.

5. The light-load combined tensile compression experimental device according to claim 4, wherein the computer is connected with the screw lifter and the strain gauge; the strain gauge is connected with the tension pressure sensor, the laser displacement sensor, the mechanical displacement sensor and the extensometer.