CN201083659Y - Tension tester - Google Patents

Abstract

The utility model discloses a tensile testing machine, wherein at least one column body is arranged on a base, one or more than one group of liftable yoke plates are arranged on the column body, one group of upper clamp assemblies are arranged on the lower side of the yoke plates, the lower clamp assemblies comprise upper clamp chucks, bolts and force sensors, and the lower clamp assemblies which are correspondingly arranged at the relative positions of the base and are in the number of the upper clamp assemblies comprise lower clamp chucks and bolts; the base is provided with a motor and a speed reducer which are connected with two or more groups of yoke plates through one or more groups of screw rods, and the transmission yoke plates are lifted through the rotation of the motor; a signal processor is connected with a microcomputer trial computer or a force display and a force sensor, and a motor rotates to lift the transmission connecting plate to drive the upper clamp chuck, the bolt and the force sensor. The structure can carry out a plurality of groups of tests and increase the span of the connecting plate, thereby achieving the balance of testing force. The tensile strength, the elongation and the elastic coefficient of the material to be measured are accurately measured, the experimental efficiency is improved, and the manufacturing cost is reduced.

Description

Tensile testing machine

technical field

The utility model relates to a testing instrument, in particular to a tensile testing machine.

Background technique

As shown in Figure 1-2, it is a kind of existing tensile testing machine. The existing tensile testing machine is equipped with a single column 100 in Figure 1-2 on a base 106, and a liftable column can be installed on the column body. The connecting plate 108 is equipped with an upper clamp 104 on the lower side of the connecting plate 108, which is composed of an upper clamp chuck 102, a latch 103 and a force sensor 101, and a lower clamp 105 is installed on the relative position of the base 106, which Including the lower clamp chuck 107 and the bolt 103, the force sensor 101 can be used to know the variation of the force.

A set of motor and reduction gear (not shown in the figure) is arranged on the base 106, which are connected with the connecting plate 108 through a screw (implying the inside of the single column 100), and the connecting plate 108 is driven up and down by the rotation of the motor.

Through the above structure, when the required experimental conditions in the experiment are set, the material to be tested is fixed between the upper clamp 104 and the lower clamp 105, and when the distance between the upper clamp 104 and the lower clamp 105 gradually increases, the material to be tested is Slowly bear the pulling force, and when the material to be tested breaks because it cannot bear the gradually increasing pulling force, the force sensor 101 can measure the force value.

But above-mentioned existing tensile testing machine, it all is to have only one group of upper fixture 104, lower fixture 105 and a group of force sensor 101 simply, so when doing experiment, can only do one test piece at a time, and this The data of the test piece is analyzed, resulting in low work efficiency.

Moreover, the above-mentioned existing tensile testing machine belongs to the unbalanced design method because its force application point is not on the axis, so the span of the connecting plate 108 of this kind of machine cannot be too long, because the span of the connecting plate 108 is too long. Excessive torque affects the life of the machine itself, and because the span of the connecting plate 108 cannot be too long, the test space is too small, which is only suitable for testing small test pieces.

Utility model content

In view of this, the main purpose of the present utility model is to provide a tensile testing machine that simultaneously performs multiple sets of tensile tests and increases the span of connecting plates to achieve a balance of testing forces.

In order to achieve the above object, the technical solution of the utility model is realized as follows: a tensile testing machine, at least one cylinder is installed on a base, and one group or more than one group of liftable connecting plates are installed on the cylinder. A set of upper fixture assembly is installed on the lower side of the board. The upper fixture assembly includes the upper fixture chuck, latch and force sensor. The lower fixture assembly and the lower fixture assembly are installed on the relative position of the base. Including the lower fixture chuck and pin;

There is a motor and a deceleration device on the base, which are connected with two or more sets of connecting plates through one or more sets of screws, and the transmission connecting plates are lifted and lowered by the rotation of the motor; a set of signal processors and a microcomputer are used for trial calculation The computer or force display is connected with the force sensor to calculate, analyze and display the measured value; one motor rotates to drive two or more sets of connecting plates up and down, and then drives two or more sets of upper clamps head, latch and force sensor.

The above two or more sets of upper and lower fixture assemblies and connecting plates are used to place and fix the object to be tested;

The above-mentioned force sensors corresponding to the upper and lower fixture assemblies and the number of connecting plate groups are respectively connected to the corresponding upper fixture assemblies to measure the tension change of the fixture on which the object to be tested is placed, so as to know the to-be-tested object. The degree of tensile strength of the test object;

The above-mentioned signal processor is connected with a microcomputer computer or a force display and the force sensor to calculate, analyze and display the values measured by the tensile testing machine;

The above-mentioned motor device is used to drive the two or more sets of lower clamp assemblies and connecting plates.

The technical effect that the utility model reaches is as follows:

With the tensile testing machine of the present invention, at least one column is installed on the base, and one or more sets of liftable connecting plates are installed on the column, and a set of upper clamp assemblies can be installed on the lower side of multiple sets of connecting plates. , can carry out multiple sets of tensile tests at the same time and increase the span of the connecting plate to achieve a balance of test forces. Therefore, the tensile testing machine can accurately measure the tensile strength, elongation, elastic coefficient, etc. of the material to be tested, and greatly improve the experimental efficiency and reduce the manufacturing cost.

Description of drawings

Fig. 1 is a schematic diagram of the external structure of an existing tensile testing machine;

Fig. 2 is the schematic diagram of the enlarged structure of part A in Fig. 1;

Fig. 3 is a schematic diagram of the external structure of the single-column type of the tensile testing machine of the present invention;

Fig. 4 is a schematic diagram of an enlarged structure of part A in Fig. 3;

Fig. 5 is a schematic diagram of the external structure of another embodiment of the tensile testing machine of the present invention;

FIG. 6 is a schematic diagram of an enlarged structure of part A in FIG. 5 .

Explanation of reference signs:

100-single column

101-force sensor 102-upper fixture chuck 103-bolt

104-upper fixture 105-lower fixture 106-base

107-Lower fixture chuck 108-Connection plate

200-column

201-force sensor

202-Upper Fixture Chuck 203-Lock 204-Upper Fixture

205-Lower Fixture 206-Base 207-Lower Fixture Chuck

208-Connection board 209-Signal processor and microcomputer test computer

212-Upper fixture assembly 213-Lower fixture assembly

Detailed ways

As shown in Figure 3-4, the tensile testing machine of the utility model is that at least one column 200 is installed above a base 206, and two connecting plates 208 that can be lifted are installed on the column 200, and the two connecting plates 208 More than one set of upper clamp assemblies 212 are respectively installed on the lower side, and the upper clamp assemblies 212 include upper clamp chucks 202, latch pins 203 and force sensors 201, and two sets of lower clamp assemblies are correspondingly installed on the relative positions of the base 206 213 , the lower clamp assembly 213 includes the lower clamp chuck 207 and the latch 203 . A motor and a reduction gear (not shown) are arranged below the base 206, which are connected to the connecting plate 208 through a screw (implicitly contained in the cylinder 200), and are driven by the rotation of the motor to lift the connecting plate 208 up and down.

After the above structure, after setting the required experimental conditions in the experiment, the material to be tested is fixedly placed between the upper fixture 204 and the lower fixture 205. When the distance between the upper fixture 204 and the lower fixture 205 gradually increases, the material to be tested is Slowly bear the pulling force, when the material to be tested breaks because it cannot bear the gradually increasing pulling force, the multiple groups of force sensors 201 are connected to a signal processor and a microcomputer test computer 209 or a force display (not shown in the figure) , used to calculate, analyze and display the values measured by the tensile testing machine, and measure the force value; to achieve the purpose of fixing the materials to be tested together, achieving the effect of substantially increasing the span of the joint plate, and achieving the purpose of testing force balance.

Since there are two or more sets of force sensors 201 and the upper fixture 204 and the lower fixture 205, two or more sets of materials to be tested can be placed at the same time for experiments.

The utility model tensile testing machine also can have other embodiments, as shown in Figure 5 and Figure 6 (double columns), two or more cylinders 200 are installed above a base 206, and can be installed on the cylinders 200. The lifting connecting plate 208, and the upper fixture assembly 212 and the lower fixture assembly 213 in the space below it, make it pass through two or more sets of connecting plates 208, the upper fixture assembly 212, and the lower fixture assembly 213. The multiple groups of force sensors 201 are connected to a signal processor and a microcomputer test computer 209 or a force display (not shown in the figure) so that they can jointly fix the materials to be tested and achieve the purpose of actually doing multiple groups of tests at one time.

It can be seen from the above description that the above-mentioned structure of the tensile testing machine of the utility model can not only accurately measure the tensile strength, elongation, elastic coefficient, etc. of the material to be tested, but also greatly improve the experimental efficiency and reduce the manufacturing cost.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model.

Claims (2)

1. tension tester, it is characterized in that, at least one cylinder is installed on one base, a group or more liftable yoke plate is installed at cylinder, at the yoke plate downside anchor clamps assembly on a group is installed, last anchor clamps assembly comprises clamping fixture head, latch and strength sensor, is equipped with and the total lower clamp assembly of counting in groups of last anchor clamps in base relative position correspondence, and the lower clamp assembly comprises lower clamp chuck, latch;

Be provided with a motor and a reduction gear at this base, be connected with two groups or more yoke plate by a group or more screw rod, through revolution with the lifting of transmission yoke plate; One group of signal processor is connected with described strength sensor with micro computer tentative calculation machine or strength display, in order to the numerical value that calculates, analyzes and demonstration records; One revolution is two groups or more yoke plate lifting of transmission, and then drives two groups or more last clamping fixture head, latch and strength sensor.

2. tension tester as claimed in claim 1 is characterized in that, described two or more sets upper and lower anchor clamps assembly and yoke plates, and it is in order to place fixing thing to be tested;

Described and upper and lower anchor clamps assembly, the strength sensor that yoke plate group number is corresponding, it connects with corresponding last anchor clamps assembly respectively, in order to measure the tension variations of these anchor clamps of placing this thing to be tested, to learn the tension intensity degree of this thing to be tested;

Described signal processor is connected with described strength sensor with a micro computer computing machine or strength display, in order to the numerical value that calculates, analyzes and the demonstration tension tester records;

Described motor apparatus is in order to drive described two or more sets lower clamp assemblies, yoke plate.

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