CN209745691U

CN209745691U - Measurement and control system of universal testing machine

Info

Publication number: CN209745691U
Application number: CN201920233884.3U
Authority: CN
Inventors: 陈阳鑫
Original assignee: Xiamen Xintu Engineering Technology Co Ltd
Current assignee: Xiamen Xintu Engineering Technology Co Ltd
Priority date: 2019-02-23
Filing date: 2019-02-23
Publication date: 2019-12-06
Anticipated expiration: 2029-02-23

Abstract

The utility model discloses an universal tester's system of observing and controling relates to mechanical properties test technical field, and its technical scheme main points are: including hydraulic pressure universal tester, the sensor module who is connected with hydraulic pressure universal tester, the controller of being connected with the sensor module and the computer of being connected with the controller, the sensor module includes oil pressure sensor, extensometer and laser displacement sensor, oil pressure sensor, extensometer and laser displacement sensor all are connected to on the controller through signal conditioning module, hydraulic pressure universal tester includes the base, set up stand on the base and the anchor clamps that are used for centre gripping test piece, be provided with the mount pad on the stand, laser displacement sensor installs on the mount pad and counterpoints with the test piece mutually, the extensometer is installed on anchor clamps and is connected with the test piece. The deformation of the test piece is measured in real time by adopting the laser displacement sensor, and the test is carried out by combining the extensometer, so that the measurement accuracy in instantaneous fracture is improved, and the method has the advantage of improving the measurement accuracy.

Description

Measurement and control system of universal testing machine

Technical Field

the utility model relates to a mechanical properties tests technical field, and more specifically says, it relates to an universal tester's system of observing and controling.

background

A universal testing machine is a material testing machine integrating the functions of stretching, bending, compressing, shearing, ring stiffness and the like, is mainly used for mechanical property tests of metal and nonmetal materials, and is ideal detection equipment for departments such as industrial and mining enterprises, scientific research units, universities and colleges, engineering quality supervision stations and the like.

When the existing universal testing machine is used for testing a test piece, the clamp is controlled to lift through the hydraulic cylinder so as to stretch the test piece, the lifting degree of the clamp is controlled by the size of the oil quantity sent into the hydraulic cylinder, so that the deformation quantity of the test piece is measured through the extensometer, the extensometer is installed on the clamp, the micro deformation of the test piece during stretching is measured through the extensometer, and after the measurement, data are fed back to the controller and are conveyed to the computer to record test data. However, when the maximum deformation of the test piece during fracture is measured, the maximum deformation of different test pieces is different, and the fracture occurs in an instant process, and in the process of testing by using the extensometer, the instantaneous deformation is not measured accurately enough, so that the measurement precision is not enough.

SUMMERY OF THE UTILITY MODEL

To current technical problem, the utility model aims to provide a universal tester's system of observing and controling combines laser to carry out the deflection of real-time measurement test piece, improves the measuring accuracy nature when instantaneous fracture, has the advantage that improves measurement accuracy.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a measurement and control system of a universal testing machine comprises a hydraulic universal testing machine, a sensor module connected with the hydraulic universal testing machine, a controller connected with the sensor module and a computer connected with the controller, the sensor module comprises an oil pressure sensor for measuring the oil pressure of the hydraulic universal testing machine, an extensometer for measuring the tensile deformation of the test piece and a laser displacement sensor for measuring the real-time length and the strain of the test piece, the oil pressure sensor, the extensometer and the laser displacement sensor are all connected to the controller through the signal conditioning module, the hydraulic universal testing machine comprises a base, an upright post arranged on the base and a clamp used for clamping a test piece, the laser displacement sensor is arranged on the mounting seat and is opposite to the test piece, and the extensometer is arranged on the clamp and is connected with the test piece.

By arranging the laser displacement sensor on the mounting seat, the mounting seat is arranged on the upright post, so that the laser displacement sensor is aligned to the test piece, then the extensometer is arranged on the clamp and connected with the test piece, thereby measuring the length change and the strain condition of the test piece in real time by using the laser displacement sensor, measuring the tensile deformation of the test piece by using the extensometer, the measured result is sent to the controller through the signal conditioning module and is transmitted to the computer by the controller, so as to combine the test result of the extensometer and the analysis of the laser displacement sensor to obtain the deformation of the test piece, and the deformation of the instantaneous fracture of the test piece can be measured in real time by the laser displacement sensor, therefore, the maximum deformation of the test piece is measured, the deformation of the test piece is measured in real time by combining laser, the measurement accuracy in instantaneous fracture is improved, and the method has the advantage of improving the measurement accuracy.

Further setting: the vertical column is internally provided with a sliding groove along the axial direction, the mounting seat is fixedly provided with a sliding block which can slide in the sliding groove in a lifting manner, and the sliding groove is internally provided with an adjusting device which is used for controlling the sliding block to slide in a lifting manner.

So set up, through control adjusting device, can adjust the sliding block and go up and down to slide in the sliding tray to the height of adjustment mount pad, so that laser displacement sensor can be suitable high to being located the test piece, so that adjust laser displacement sensor's height according to test piece test demand, improve the accuracy nature that records the test piece deflection in real time, improve measurement accuracy.

Further setting: adjusting device including wear to establish the lead screw of sliding block, be fixed in the worm wheel of lead screw bottom and with worm wheel complex worm, set up the chamber that holds that is used for holding worm wheel and worm in the base, the one end of lead screw is rotated and is connected in the top of sliding tray, and the other end is rotated and is worn to establish the base and stretch into and hold intracavity and worm wheel fixed connection, just lead screw and sliding block threaded connection, the one end of worm is rotated and is connected on the lateral wall that holds the chamber, and the other end is worn to appear and is held the chamber and form the operation end.

So set up, rotate through the control operation end, drive the worm and rotate to drive the worm wheel and rotate, drive the lead screw by the worm wheel and rotate, make and go up and down to slide with lead screw threaded connection's sliding block, slide to required position after, loosen the operation end can, improve the convenience of adjustment laser displacement sensor height, so that to be located measuring on the test piece, improve measuring accuracy.

further setting: the sliding groove is a T-shaped groove, and the sliding block is a T-shaped block.

So set up, the sliding block receives the restriction of T shape at the gliding in-process of sliding tray, can only slide along the direction that the sliding tray extends to improve the gliding stability of sliding block.

further setting: the operation end is provided with an operation hand wheel.

So set up, grip the operation hand wheel rotatable worm promptly, the staff application of force of being convenient for improves the convenience of adjustment laser displacement sensor height position.

Further setting: and a graduated scale is arranged at the position of the upright column close to the notch of the sliding groove.

So set up, the mount pad can judge the high position of mount pad through the scale along with the sliding back of sliding block to in the high position according to measurement demand restriction laser displacement sensor, improve measuring accuracy nature.

Further setting: oil pressure sensor installs in hydraulic cylinder oil inlet department of hydraulic pressure universal tester, just hydraulic cylinder oil inlet department of hydraulic pressure universal tester is provided with the pressure inlet valve, and oil-out department is provided with the relief valve, the pressure inlet valve all with controller signal connection with the relief valve, oil pressure sensor detects into oil pressure when too big, controller control pressure inlet valve closes, opens the relief valve.

So set up, through the oil pressure size in the hydraulic cylinder of oil pressure sensor response, too big as the pressure value, oil pressure sensor transmission signal gives the controller, will advance the pressure valve by the controller and close to open relief valve discharge pressure, with balanced oil pressure. When the oil pressure is too small, the pressure inlet valve is opened by the controller, the pressure release valve is closed, the safety performance is guaranteed by balancing the oil pressure, the oil pressure is measured in real time, and real-time control is conducted according to the oil pressure.

Further setting: the controller still is connected with the alarm, be provided with the threshold value in the oil pressure sensor, send signal when oil pressure sensor detects the oil pressure and surpasss the threshold value, the controller accepts the signal and controls the admission valve to close, the relief valve is opened and start the alarm.

So set up, through the alarm that sets up, when the oil pressure exceeded the threshold value, can start the alarm and send the warning to signal the staff in time to make emergency measures, improve the security.

By adopting the technical scheme, the utility model discloses relative prior art compares, has following advantage:

1. The deformation of the test piece is measured in real time by adopting the laser displacement sensor, and the test is carried out by combining with the extensometer, so that the measurement accuracy during instantaneous fracture is improved, and the method has the advantage of improving the measurement accuracy;

2. The height of the laser displacement sensor can be adjusted by controlling the adjusting device, so that the laser displacement sensor can be accurately aligned to the position of the test piece, and the measurement precision is improved;

3. The oil pressure is sensed through the oil pressure sensor, and the controller controls the opening and closing of the pressure inlet valve and the pressure release valve according to requirements, so that the oil pressure is controlled in real time, and the safety performance is improved.

Drawings

FIG. 1 is a schematic structural diagram of a measurement and control system of a universal tester;

FIG. 2 is a schematic structural view of a hydraulic universal testing machine;

FIG. 3 is a schematic cross-sectional view of FIG. 2;

FIG. 4 is a schematic cross-sectional view of the column in the direction of force;

FIG. 5 is a schematic cross-sectional view of the connection of the screw and worm gear.

In the figure: 1. a hydraulic universal testing machine; 11. a base; 111. an accommodating chamber; 12. a column; 121. a sliding groove; 13. a clamp; 2. a sensor module; 21. an oil pressure sensor; 22. an extensometer; 23. a laser displacement sensor; 3. a controller; 4. a computer; 5. a mounting seat; 51. a slider; 6. an adjustment device; 61. a screw rod; 62. a worm gear; 63. a worm; 631. an operation end; 7. a pressure inlet valve; 8. a pressure relief valve; 9. an alarm.

Detailed Description

The measurement and control system of the universal tester is further described with reference to fig. 1 to 5.

The utility model provides a universal tester's system of observing and controling, as shown in figure 1, including hydraulic pressure universal tester 1, the sensor module 2 of being connected with hydraulic pressure universal tester 1, controller 3 of being connected with sensor module 2 and computer 4 of being connected with controller 3, each data when being tested by sensor module 2 to universal tester tests and the record, and transmit real-time control to controller 3, send to the record on computer 4 by controller 3, thereby be convenient for read test data through computer 4, so that the staff carries out the analysis.

As shown in fig. 1 and 2, the hydraulic universal testing machine 1 includes a base 11, a column 12 provided on the base 11, and a clamp 13 for clamping a test piece, wherein the clamp 13 is controlled to be lifted by a hydraulic cylinder. Sensor module 2 installs on universal tester, it is concrete, sensor module 2 is including the oil pressure sensor 21 that is used for measuring 1 oil pressure of hydraulic universal tester, a laser displacement sensor 23 that is used for measuring the real-time length of test piece and meets an emergency of test piece for measuring extensometer 22 of test piece tensile deformation, wherein, oil pressure sensor 21 installs in hydraulic cylinder oil inlet department of hydraulic universal tester 1, extensometer 22 installs on anchor clamps 13 and is connected with the test piece, be provided with mount pad 5 on stand 12, laser displacement sensor 23 is installed on mount pad 5 and is counterpointed with the test piece, and oil pressure sensor 21, extensometer 22 and laser displacement sensor 23 all are connected to controller 3 through signal conditioning module, so that intelligent control.

As shown in fig. 1, wherein, a pressure inlet valve 7 is arranged at the hydraulic cylinder oil inlet of the hydraulic universal testing machine 1, a pressure release valve 8 is arranged at the oil outlet, and the pressure inlet valve 7 and the pressure release valve 8 are both in signal connection with the controller 3. Further, the controller 3 is also connected with an alarm 9, a threshold value is arranged in the oil pressure sensor 21, when the oil pressure sensor 21 detects that the oil inlet pressure is too large, a signal is sent to the controller 3, the controller 3 controls the inlet pressure valve 7 to be closed, the pressure release valve 8 is opened to balance the oil pressure, and the alarm 9 is started to start alarming; when the oil pressure sensor 21 detects that the oil pressure is too small, the controller 3 controls the relief valve 8 to close and the inlet valve 7 to open to balance the oil pressure. Further, the pressure inlet valve 7 and the pressure release valve 8 are both provided with electric control valves, so that the controller 3 can control in real time, and the operation safety is improved.

As shown in fig. 2 and 3, a sliding groove 121 is formed in the column 12 along the axial direction thereof, a sliding block 51 that slides up and down in the sliding groove 121 is fixedly disposed on the mounting base 5, the sliding groove 121 is a T-shaped groove, and the sliding block 51 is a T-shaped block, thereby improving the stability of the sliding block 51 in the sliding groove 121. An adjusting device 6 for controlling the sliding block 51 to slide up and down is arranged in the sliding groove 121, so that the height of the mounting seat 5 can be adjusted, and the laser displacement sensor 23 can detect the position of the test piece at a proper angle. Further, the position of the column 12 near the notch of the sliding groove 121 is provided with a scale so as to control the laser displacement sensor 23 to move to a required height position, thereby improving the convenience of adjustment.

As shown in fig. 3, 4 and 5, specifically, the adjusting device 6 includes a screw 61 penetrating through the sliding block 51, a worm wheel 62 fixed at the bottom end of the screw 61, and a worm 63 engaged with the worm wheel 62, wherein a containing cavity 111 for containing the worm wheel 62 and the worm 63 is formed in the base 11, one end of the screw 61 is rotatably connected to the top of the sliding groove 121, the other end of the screw is rotatably penetrating through the base 11 and extending into the containing cavity 111 to be fixedly connected with the worm wheel 62, and the screw 61 is in threaded connection with the sliding block 51; one end of the worm 63 is rotatably connected to the side wall of the accommodating cavity 111, the other end of the worm 63 penetrates through the accommodating cavity 111 and forms an operating end 631, the operating end 631 is specifically arranged as an operating hand wheel fixedly connected with the worm 63, the worm 63 can be controlled to rotate by holding the operating hand wheel, and therefore the worm wheel 62 is driven to rotate so as to drive the screw rod 61 to rotate, adjustment of the height position of the sliding block 51 is achieved, and the height of the laser displacement sensor 23 can be adjusted conveniently.

the working principle is as follows: in the test, the extensometer 22 is attached to the test piece while the test piece is placed in the jig 13. And then the laser displacement sensor 23 is installed on the installation seat 5, the operation hand wheel is controlled to rotate, the worm 63 is driven to rotate, the worm 63 drives the worm wheel 62 and the screw rod 61 to rotate, the sliding block 51 is lifted and slid in the sliding groove 121, the installation seat 5 and the laser displacement sensor 23 are driven to lift until the required height position is adjusted, and the laser displacement sensor 23 and the test piece are aligned conveniently. And then starting the hydraulic universal testing machine 1 for testing, wherein in the testing process, the extensometer 22 is used for testing the tensile deformation of the test piece, the laser displacement sensor 23 is used for testing the real-time length change and the strain condition of the test piece in real time, the testing value is sent to the controller 3 through the signal conditioning module, the controller 3 feeds back the testing value to the computer 4 for recording and analyzing, the deformation of the test piece is measured, and the laser displacement sensor 23 is used for testing and recording in real time at the moment of breaking the test piece. Through the scheme, the deformation of the test piece can be measured in real time by combining laser, the accuracy of instantaneous deformation measurement when the test piece is broken is improved, and the method has the advantage of improving the measurement accuracy.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a universal tester's system of observing and controling, includes hydraulic pressure universal tester (1), sensor module (2) of being connected with hydraulic pressure universal tester (1), controller (3) of being connected with sensor module (2) and computer (4) of being connected with controller (3), its characterized in that: sensor module (2) including oil pressure sensor (21) that is used for measuring hydraulic pressure universal tester (1) oil pressure, extensometer (22) that is used for measuring test piece tensile deformation and be used for measuring laser displacement sensor (23) that real-time length of test piece reaches meeting an emergency, oil pressure sensor (21), extensometer (22) and laser displacement sensor (23) are all connected to controller (3) through signal conditioning module on, hydraulic pressure universal tester (1) includes base (11), sets up stand (12) on base (11) and anchor clamps (13) that are used for the centre gripping test piece, be provided with mount pad (5) on stand (12), laser displacement sensor (23) are installed on mount pad (5) and are counterpointed with the test piece, extensometer (22) are installed on anchor clamps (13) and are connected with the test piece.

2. The measurement and control system of the universal tester of claim 1, wherein: a sliding groove (121) is formed in the vertical column (12) along the axial direction of the vertical column, a sliding block (51) which can slide in the sliding groove (121) in a lifting mode is fixedly arranged on the mounting seat (5), and an adjusting device (6) used for controlling the sliding block (51) to slide in the lifting mode is arranged in the sliding groove (121).

3. the measurement and control system of the universal tester of claim 2, wherein: adjusting device (6) including wearing to establish lead screw (61) of sliding block (51), be fixed in worm wheel (62) of lead screw (61) bottom and with worm wheel (62) complex worm (63), set up chamber (111) that holds that is used for holding worm wheel (62) and worm (63) in base (11), the one end of lead screw (61) is rotated and is connected in the top of sliding tray (121), and the other end rotates and wears to establish base (11) and stretch into and hold chamber (111) in with worm wheel (62) fixed connection, just lead screw (61) and sliding block (51) threaded connection, the one end of worm (63) is rotated and is connected on the lateral wall that holds chamber (111), and the other end wears to appear and holds chamber (111) outer and form operation end (631).

4. The measurement and control system of the universal tester of claim 3, wherein: the sliding groove (121) is a T-shaped groove, and the sliding block (51) is a T-shaped block.

5. The measurement and control system of the universal tester of claim 3, wherein: the operating end (631) is configured to operate a hand wheel.

6. The measurement and control system of the universal tester of claim 2, wherein: and a graduated scale is arranged at the position of the upright post (12) close to the notch of the sliding groove (121).

7. the measurement and control system of the universal tester of claim 1, wherein: oil pressure sensor (21) are installed in the pneumatic cylinder oil inlet department of hydraulic pressure universal tester (1), just the pneumatic cylinder oil inlet department of hydraulic pressure universal tester (1) is provided with pressure inlet valve (7), and oil-out department is provided with relief valve (8), pressure inlet valve (7) all with controller (3) signal connection with relief valve (8), oil pressure sensor (21) detect the oil feed and press when too big, controller (3) control pressure inlet valve (7) are closed, open relief valve (8).

8. The measurement and control system of the universal tester of claim 7, wherein: the controller (3) still is connected with alarm (9), be provided with the threshold value in oil pressure sensor (21), send signal when oil pressure sensor (21) detect the oil pressure and exceed the threshold value, controller (3) received the signal and control admission valve (7) and close, relief valve (8) are opened and start alarm (9).