CN215812139U

CN215812139U - Multi-head tensile testing machine for material mechanics test

Info

Publication number: CN215812139U
Application number: CN202122092895.4U
Authority: CN
Inventors: 张东京
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2022-02-11
Anticipated expiration: 2031-09-01

Abstract

The utility model provides a multi-head tensile testing machine for a material mechanics test, which comprises a machine base, a left arm shell, a right arm shell, a cross beam, an upright post, extensometers and clamps, wherein the left arm shell and the right arm shell are respectively arranged on the left side and the right side of the machine base, screw rods are arranged in the left arm shell and the right arm, two ends of the cross beam are respectively connected with the screw rods, the upright post is arranged on a panel of the machine base, an encoder module is arranged on the upright post, a plurality of tension sensors are arranged on the lower side of the cross beam and are connected with a first clamp, a plurality of second clamps are arranged on the panel of the machine base, and a first extensometer and a second extensometer are arranged between the first clamp and the second clamps, so that the design can simultaneously test and compare a plurality of samples, and can simultaneously collect and analyze difference data among different materials, the efficiency of the test is improved.

Description

Multi-head tensile testing machine for material mechanics test

Technical Field

The utility model relates to the technical field of material mechanics tensile testing machines, in particular to a multi-head tensile testing machine for a material mechanics test.

Background

At present, in the field of mechanical testing of materials, a tensile testing machine is a single-head single column or a double column, the technology of the tensile testing machine is mature, and the tensile testing machine can be used for basic mechanical testing of materials. However, with the development and innovation of the technology, the defects are increasingly obvious.

Traditional tensile testing machine is limited in the test of single-end single sample, then can't be competent when testing the contrast simultaneously to a plurality of samples of needs, to the demand of testing a large amount of samples, often need to test simultaneously through purchasing many equipment thereby improve the efficiency of test, but this method can cause the cost of purchasing equipment to improve, the improvement of cost of labor, the area increase of equipment, equipment power consumption increase scheduling problem, simultaneously to the difference data between the different materials, many independent test equipment more can't gather and analysis test data, and generate data display in same test report, the event can't carry out data, parameter and curve comparison analysis, research and development and quality analysis for the product have led to the fact the obstacle. Therefore, a multi-head tensile test device is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a multi-head tensile testing machine for a material mechanics test, which comprises a machine base, a left arm shell, a right arm shell, a cross beam and an upright post, wherein the left arm shell and the right arm shell are respectively arranged on the left side and the right side of the machine base, screw rods are arranged in the left arm shell and the right arm, two ends of the cross beam are respectively connected with the screw rods, the upright post is arranged on a panel of the machine base, an encoder module is arranged on the upright post, a plurality of tension sensors are arranged on the lower side of the cross beam and connected with a first clamp, a plurality of second clamps are arranged on the panel of the machine base, and a first extensometer and a second extensometer are arranged between the first clamp and the second clamps.

The base is provided with a servo motor, the servo motor is connected with the screw rod inside the left arm shell and the right arm shell through a transmission gear and a synchronous belt, a first guide rod is arranged in front of the stand column, the first extensometer and the second extensometer are installed on the first guide rod, and the first extensometer and the second extensometer are respectively connected with the encoder module through steel wires.

Preferably, the first extensometer comprises a handle, a first clamping block, a second clamping block, a sliding bearing, an O-shaped rubber ring and a steel wire interface.

Preferably, the encoder module includes first encoder, second encoder, fixed pulley, follows driving wheel, brake external member, support, steel wire and gravity awl.

Preferably, the first clamp comprises a shell, a gear and a compression roller, the compression roller is arranged in the shell and connected with the gear arranged on the outer side of the shell, and a wrench is arranged on the gear.

Preferably, a second guide rod is arranged outside the left arm shell, a limit stop ring and an induction stop block are sleeved on the second guide rod, and one end of the induction stop block is connected with the cross beam.

Preferably, the first clamp is connected with the panel of the base through a first connector, and the second clamp is connected with the tension sensor through a second connector.

Drawings

FIG. 1 is a schematic perspective view of a tensile testing machine according to the present invention;

FIG. 2 is a schematic structural view of a main view of the tensile tester of the present invention;

FIG. 3 is an enlarged view of the structure at B in FIG. 2;

FIG. 4 is an enlarged schematic structural view of the clamp and extensometer portions of the tensile testing machine of the present invention;

FIG. 5 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 6 is a schematic diagram of the internal structure of an encoder module according to the present invention;

fig. 7 is a schematic structural view of a fixed pulley portion in the encoder module of the present invention.

1-a machine base, 2-a left arm shell, 3-a right arm shell, 4-a crossbeam, 5-a screw rod, 6-an encoder module, 7-a first clamp, 8-a second clamp, 9-a first extensometer, 10-a second extensometer, 11-a vertical column, 12-a first guide rod, 13-a second guide rod, 14-a limit stop ring, 15-a sensing stop block, 16-a first connector, 17-a second connector, 18-a tension sensor, 19-a servo motor, 20-a sensor group, 21-a handle, 22-a first clamping block, 23-a second clamping block, 24-a sliding bearing, 25-O-shaped rubber ring, 26-a steel wire interface, 601-a first encoder, 602-a second encoder, 603-a driven wheel and 604-a bracket, 605-steel wire, 606-gravity cone, 607 brake kit, 608-fixed pulley, 609-baffle, 701-shell, 702 gear, 703-compression roller and 704-wrench.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1-5, a bull tensile testing machine for mechanics of materials test, includes frame 1, left arm shell 2, right arm shell 3, crossbeam 4 and stand 11, left arm shell 2 with right arm shell 3 sets up respectively the both sides about frame 1, left arm shell 2 with be provided with lead screw 5 in the right arm 4, the both ends of crossbeam 4 respectively with lead screw 5 is connected, stand 11 sets up on the frame 1 panel, be provided with encoder module 6 on the stand 1, crossbeam 4 downside is provided with a plurality of force sensors 18, force sensor 18 is connected with first anchor clamps 7, set up second anchor clamps 8 on the panel of frame 1, first anchor clamps 7 with be provided with first extensometer 9 and second extensometer 10 between second anchor clamps 8.

Wherein, frame 1 is provided with servo motor 19, servo motor 19 is through setting up drive gear and the hold-in range drive under frame 1 panel left arm shell 2 and the inside lead screw 5 of right arm shell 3, it needs to explain that, how the motor is through gear and hold-in range drive lead screw is the conventional technical knowledge in this field, no longer gives details to its specific structure here, stand 11 the place ahead is provided with first guide arm 12, first extensometer 9 with second extensometer 10 installs on first guide arm 12, first extensometer 9 with second extensometer 10 respectively through steel wire 605 with encoder module 6 is connected.

In this embodiment, the number of the upright columns 11 is 7, the bottoms of the 7 upright columns 11 are fixed on the panel of the base 1, the top of each upright column 11 is provided with a set of encoder modules 6, a first guide rod 12 is arranged in front of each upright column 11, the lower side of the cross beam 4 is provided with 7

corresponding tension sensors

18 and 7 corresponding first clamps 7, second clamps 8, first extensometers 9 and second extensometers 10, and the arrangement can enable the device to simultaneously meet the independent test of 7 samples.

In an alternative embodiment, the first extensometer 9 comprises a handle 21, a first clamping block 22, a second clamping block 23, a sliding bearing 24, 2O-shaped rubber rings 25 and a steel wire interface 26, wherein the sliding bearing 24 is connected with the first guide rod 12, so that the first extensometer 9 can slide up and down in the first guide rod 12, and the steel wire interface 26 is used for connecting a steel wire in the encoder module 6; the 2O-shaped rubber rings are respectively arranged on the first clamping block 22 and the second clamping block 23, the handle 21 penetrates through the first clamping block 22 and is connected with the second clamping block 23, a spring is arranged on the handle 21, the 2O-shaped rubber rings are mutually extruded to be in a clamping state in a normal state, when the handle 21 is pushed forwards, the first clamping block 22 and the second clamping block 23 can be loosened, a sample is placed between the two O-shaped rubber rings at the moment, and then the handle 21 is loosened, so that the sample can be clamped.

It should be noted that the structure and function of the second extensometer 10 are the same as those of the first extensometer 9, and therefore, the structure of the second extensometer 10 will not be described again here.

As shown in fig. 6, in an alternative embodiment, the encoder module 6 includes a first encoder 601, a second encoder 602, a driven wheel 603, a bracket 604, a steel wire 605, a gravity cone 606, a brake sleeve 607, a fixed pulley 608 and a baffle 609, wherein 2 baffles 609 are provided on the bracket 604, the first encoder 601 and the second encoder 602 are respectively installed on one side of the two baffles 609 and connected with the fixed pulley 608 installed on the other side of the baffles 609, the fixed pulley 608 is externally sleeved with the brake sleeve 607, when the extensometer is ascended at an excessive speed, the steel wire 605 deviates from the fixed pulley 608 due to a certain rigidity, and at this time, the brake sleeve 607 is arranged to contact with the steel wire and generate a friction force, so as to prevent the steel wire 605 from deviating from the fixed pulley 608 by an excessive distance, the steel wire (605) passes through the fixed pulley 608 and the driven wheel 603, one end of the steel wire 605 is connected with the gravity cone 606, the other end is connected with the steel wire interface 26 of the first extensometer 9, the upright post 11 is of a hollow structure, the gravity cone 606 is suspended inside the hollow upright post 11 through a steel wire 605, and when the first extensometer 9 ascends or descends, the fixed pulley group 603 can rotate forward or backward under the action of the gravity cone 606, so that the first encoder 601 is driven to rotate forward or backward.

In an alternative embodiment, the first clamp includes a

housing

701, 2

gears

702 and 2 compression rollers 703, the compression rollers 703 are disposed inside the housing 701 and connected to the gears 702 disposed outside the housing 701, the gears 702 are eccentrically connected to the compression rollers 703, a wrench 704 is disposed on the gears 702, when the wrench 704 is rotated clockwise or counterclockwise, the distance between the 2 compression rollers can be controlled, so as to achieve the purpose of loosening or clamping, and patterns can be disposed on the compression rollers 703 to increase friction when clamping the sample.

In an alternative embodiment, a second guide rod 13 is arranged outside the left arm shell 2, the second guide rod 13 is sleeved with a limit stop ring 14 and an induction stop 15, one end of the induction stop 15 is connected with the cross beam 4, and the second guide rod 13 is connected with a sensor group 20.

In an alternative embodiment, the first clamp 7 is connected to the panel of the base 1 through a first connector 16, and the second clamp 8 is connected to the tension sensor 18 through a second connector 17.

The working principle is as follows:

two ends of a test sample are respectively fixed in a first clamp 7 and a second clamp 8, a first extensometer 9 and a second extensometer 10 respectively clamp the middle position of the sample, when a plurality of samples need to be tested simultaneously, the above operations are repeated to fix the samples on different test stations, then, a software system of a control host sends an action instruction to a test device, a servo motor 19 drives a gear and a synchronous belt to rotate so as to transmit power to a screw rod 5 in a left shell arm 2 and a right shell arm 3, the screw rod 5 rotates so as to drive a cross beam 4 to ascend or descend, when the cross beam 4 ascends, the second clamp 8 ascends along with the rotation, the samples are stretched, the first extensometer 9 and the second extensometer 10 also ascend along with the stretching of the samples, under the action of a steel wire 605 and a fixed pulley block 603, a gravity cone 606 in an upright post 11 descends so as to drive the fixed pulley block 603 to rotate, thereby drive and correspond two encoders and rotate, the control host computer is to the power value of pulling force sensor 18 feedback and 2 extensometer encoders, servo motor 19, the displacement data continuous collection of crossbeam 4, through software statistics and the analysis of control host computer to show on the software interface of control host computer through modes such as power value, peak value, deflection, displacement, maximum value, minimum value, average value and corresponding curve, real-time numerical value.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the utility model and are not to be construed as limiting the utility model. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The utility model provides a bull tensile test machine for mechanics of materials is experimental, includes frame (1), left arm shell (2), right arm shell (3), crossbeam (4) and stand (11), its characterized in that, left side arm shell (2) with right side arm shell (3) set up respectively the left and right sides of frame (1), left side arm shell (2) with be provided with lead screw (5) in right side arm shell (3), the both ends of crossbeam (4) respectively with lead screw (5) are connected, stand (11) set up on frame (1) panel, be provided with encoder module (6) on stand (11), crossbeam (4) downside is provided with force transducer (18), force transducer (18) are connected with first anchor clamps (7), be provided with second anchor clamps (8) on the panel of frame (1), first anchor clamps (7) with be provided with first extensometer (9) and second extensometer (8) between second anchor clamps (8) (10).

2. The multi-head tensile testing machine for the material mechanics test according to claim 1, wherein the machine base (1) is provided with a servo motor (19), the servo motor (19) drives the screw rods (5) inside the left arm shell (2) and the right arm shell (3) through a transmission gear and a synchronous belt which are arranged below a panel of the machine base (1), a first guide rod (12) is arranged in front of the upright post (11), the first extensometer (9) and the second extensometer (10) are installed on the first guide rod (12), and the first extensometer (9) and the second extensometer (10) are respectively connected with the encoder module (6) through a steel wire (605).

3. The multi-head tensile testing machine for mechanical material tests according to claim 2, wherein the first extensometer (9) comprises a handle (21), a first clamping block (22), a second clamping block (23), a sliding bearing (24), an O-shaped rubber ring (25) and a steel wire interface (26), and the sliding bearing (24) is connected with the first guide rod (12).

4. The multi-head tensile testing machine for the material mechanics test according to claim 3, wherein the number of the O-shaped rubber rings is two, the O-shaped rubber rings are respectively installed on the first clamping block (22) and the second clamping block (23), the handle (21) penetrates through the first clamping block (22) and is connected with the second clamping block (23), and the handle (21) is provided with a spring.

5. The multi-head tensile testing machine for the material mechanics test according to claim 1, wherein the encoder module (6) comprises a first encoder (601), a second encoder (602), a fixed pulley (608), a bracket (604), a steel wire (605) and a gravity cone (606), the upright post (11) is of a hollow structure, the gravity cone (606) is suspended inside the hollow upright post (11) through the steel wire (605), two baffles (609) are arranged on the bracket (604), the first encoder (601) and the second encoder (602) are respectively installed on one side of the two baffles (609) and connected with the fixed pulley (608) installed on the other side of the baffle (609), a brake sleeve (607) is sleeved outside the fixed pulley (608), the steel wire (605) passes through the fixed pulley (608) and a driven pulley (603), and one end of the steel wire (605) is connected with the gravity cone (606), the other end is connected with a steel wire interface (26) of the first extensometer (9).

6. The multi-head tensile testing machine for the material mechanics test according to claim 1, characterized in that the first clamp (7) comprises a housing (701), two gears (702) and two compression rollers (703), the compression rollers (703) are arranged inside the housing (701) and connected with the gears (702) arranged outside the housing (701), the gears (702) are eccentrically connected with the compression rollers (703), and a wrench (704) is arranged on the gears (702).

7. The multi-head tensile testing machine for the material mechanics test according to claim 1, wherein a second guide rod (13) is arranged outside the left arm shell (2), a limit stop ring (14) and an induction stop block (15) are sleeved on the second guide rod (13), one end of the induction stop block (15) is connected with the cross beam (4), and the second guide rod (13) is connected with a sensor group (20).

8. The multi-head tensile testing machine for the material mechanics test according to claim 1, wherein the first clamp (7) is connected with the panel of the machine base (1) through a first connector (16), and the second clamp (8) is connected with the tension sensor (18) through a second connector (17).

9. The multi-head tensile testing machine for mechanical material tests according to any one of claims 1 to 8, wherein the number of the upright (11), the encoder module (6), the tension sensor (18), the first fixture (7), the second fixture (8), the first extensometer (9) and the second extensometer (10) is 7.