CN201819850U - Tensile tester - Google Patents
Tensile tester Download PDFInfo
- Publication number
- CN201819850U CN201819850U CN 201020573971 CN201020573971U CN201819850U CN 201819850 U CN201819850 U CN 201819850U CN 201020573971 CN201020573971 CN 201020573971 CN 201020573971 U CN201020573971 U CN 201020573971U CN 201819850 U CN201819850 U CN 201819850U
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- China
- Prior art keywords
- lever
- extensiometer
- anchor clamps
- screw
- load
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides a tensile tester which comprises a frame, a pair of fixtures, a lead screw, a nut and a lever, wherein, one fixture in the pair of fixtures is connected with the frame, and the other fixture is connected with the lever; the lead screw is rotationally connected to the frame; the nut is matched with the lead screw; and one end of the lever is hinged with the nut. By utilizing the tensile tester provided by the utility model, the nut can be enabled to move up and down on the lead screw by rotating the lead screw, thereby regulating the position of one end of the lever, enabling the force applying lever to keep horizontal always, ensuring that the tensile force applied by a load on a test sample through the lever is constant and accurate in the whole testing process, and further guaranteeing the accuracy of the material performance data acquired from a tensile test.
Description
Technical field
The utility model relates to mechanical property of materials proving installation, more specifically, relates to a kind of extensiometer.
Background technology
Tension test is a kind of test of measuring the series of characteristics of material under the tensile load effect, claims tensile test again.Whether up to specification tension test is one of basic skills of mechanical property of materials test, be mainly used in experimental material the standard and the performance of research material.
At present, when material is carried out tension test, impose constant pulling force,, adopt the lever application of force usually because this constant pulling force is bigger to sample.But it is long to run into test period, and during the bigger situation of sample creep compliance, application of force lever will have bigger inclination, not only influence measuring accuracy, even can cause test to carry out.
Thereby, need a kind of application of force lever that can make to use the maintenance level, to guarantee in experimentation, to be loaded into the constant device of pulling force on the sample.
The utility model content
At the above-mentioned problems in the prior art, a kind of extensiometer has been proposed, be used for creep elongation amount, thereby make application of force lever apply constant pulling force to sample all the time from the motion tracking sample.
The utility model provides a kind of extensiometer, comprising frame, a pair of anchor clamps, leading screw, screw and lever, anchor clamps in the described a pair of anchor clamps are connected with described frame, another anchor clamps are connected with described lever, described leading screw is rotatably connected on the described frame, described screw matches with described leading screw, and an end and the described screw of described lever are hinged.
Wherein, this extensiometer can also comprise the load thing, and this load thing is arranged on the described lever.
Wherein, described load thing can be arranged at the other end of described lever, and described another anchor clamps can be connected on the position between described screw and the described load thing.
Wherein, this extensiometer can also comprise motor, and the output shaft of described motor is connected with described lead screw transmission.
Wherein, this extensiometer can also comprise controller, and described controller is electrically connected with described motor.
Wherein, this extensiometer can also comprise the displacement transducer of the displacement that is used to detect described another anchor clamps.Described displacement transducer can be connected with described another anchor clamps.
Wherein, described controller also is connected with described load sensor to receive the stress value of described anchor clamps from described load sensor.
Wherein, described controller can also be electrically connected with described displacement transducer to receive the shift value of described another anchor clamps from described displacement transducer.
Wherein, this extensiometer also comprises the stressed load sensor that is used to detect described anchor clamps, and described load sensor is connected between described frame and the described anchor clamps.
The extensiometer that utilizes the utility model to provide, can screw be moved up and down on leading screw by rotating threaded shaft, thereby the position of an end of adjustment (adjusting) lever, so that application of force lever remains level, thereby guarantee in entire test, the load thing all is accurately constant by the pulling force that lever is applied on the sample, and then has guaranteed to utilize the accuracy of the performance data of the material that tension test obtains.
Description of drawings
Fig. 1 is the structural drawing according to the extensiometer of preferred implementation of the present utility model.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Fig. 1 shows the structural drawing according to the extensiometer of preferred implementation of the present utility model.With reference to figure 1, the utility model provides a kind of extensiometer, comprising frame 1, a pair of anchor clamps 6, leading screw 2, screw 4 and lever 5, anchor clamps in the described a pair of anchor clamps 6 are connected with described frame 1, another anchor clamps are connected with described lever 5, described leading screw 2 is rotatably connected on the described frame 1, and described screw 4 matches with described leading screw 2, and an end and the described screw 4 of described lever 5 are hinged.
Two anchor clamps in the described a pair of anchor clamps 6 are clamped in the two ends of sample 3 respectively, being used for to sample 3 application of forces, thereby sample 3 are stretched.Usually, the sample 3 that carries out tension test can be plastics and metal etc.Can have latch mechanism on the described anchor clamps 3,, prevent that to be used for fixing sample 3 sample 3 from coming off such as screw thread, projection and latch or the like.
Described leading screw 2 is rotatably connected on the described frame 1, and screw 4 is complementary on leading screw 2 and with leading screw 2, and screw 4 can move up and down when leading screw 2 rotations.Because screw 4 is hinged with an end of lever 5, when screw 4 moved up and down, an end that then can drive lever 5 moved up and down.
This extensiometer can also comprise load thing 7, described load thing 7 is arranged on the lever 5, be used for lever 5 is applied downward pressure, lever 5 thing 7 applied pressures of will loading are delivered on another anchor clamps in the described a pair of anchor clamps 6 then, make these another anchor clamps sample 3 that stretches downwards.The sample 3 that is stretched can produce creeping displacement, and then another anchor clamps of the sample 3 that stretches downwards also produce displacement downwards.Described load thing 7 can be arranged at the other end of described lever 5, and described another anchor clamps can be connected on the position between described screw 4 and the described load thing 7.Also described another anchor clamps can be connected the other end of described lever 5, and described load thing 7 is arranged on the position between screw 4 and the lever 5.Preferably, described another anchor clamps can be connected with described lever 5 by connecting rod.Wherein, described load thing 7 can be the load weight, also can adopt the load thing 7 that other can the application of force.
When load thing 7 is loaded into when making on the lever 5 that 5 pairs of samples 3 of lever apply downward pulling force, the sample 3 that is stretched can produce creeping displacement, make another anchor clamps of downward stretching sample 3 also produce displacement downwards, the lever 5 that be connected with described another anchor clamps this moment may will produce, at this moment can screw 4 be moved down by rotating lever 5, thereby make lever 5 keep balance.Continue to increase the quality of load thing 7, perhaps by adjusting the application of force that the position of load thing 7 on lever 5 continues to increase 5 pairs of samples 3 of lever, and then the creeping displacement that sample 3 produces increases, at this moment can continue rotating lever 5, make screw 4 continue to move downward, and then make lever 5 remain equilibrium state.
Can come rotating lever 5 by manual operation.Preferably, this extensiometer also can comprise motor, and the output shaft of this motor and leading screw 2 are in transmission connection, and drives leading screw 2 rotation thereby rotate by motor.Described motor can be stepper motor.
Preferably, described extensiometer can also comprise displacement transducer 8, and this displacement transducer 8 is used to detect the displacement of described another anchor clamps.This displacement transducer 8 can be as required measuring accuracy etc. adopt inductive displacement transducer, capacitive displacement transducer and optical displacement sensor or the like, as long as the displacement of described another anchor clamps of energy measurement.Displacement transducer 8 can be connected with described another anchor clamps.
This extensiometer can also comprise controller, and described controller is electrically connected with described motor, is used to control the operation of described motor.Described controller can also be electrically connected with described displacement transducer 8, receiving the shift value of described another anchor clamps from described displacement transducer 8, thereby controls the operation of described motor according to the shift value of described another anchor clamps.Preferably, the described controller control motor rotation distance that makes screw 4 on the described leading screw 2 move down equals the shift value of described another anchor clamps.
Preferably, this extensiometer can also comprise load sensor 9, and described load sensor 9 is connected between described frame 1 and the described anchor clamps, is used to detect the stressed of described anchor clamps, promptly detects the stressed of sample 3.Described load sensor 9 can adopt sensors such as photo-electric, electromagnetic type, condenser type, magnetic pole deformation type.Usually, tension test also needs to demonstrate the stressed of sample 3, so, this extensiometer can also comprise display unit, this display unit is connected with load sensor 9, be used to receive the detection signal of load sensor 9, the stress value of the sample 3 that is promptly detected, thus the stress value of sample 3 is shown.
Described symbol load sensor 9 and can being electrically connected with described controller, with the stressed controller that sends to anchor clamps, thereby controller can also be controlled the operation of described motor according to the stress value of described anchor clamps.
For example, the stress value of described anchor clamps that receive when described controller is during greater than a predetermined threshold (such as 100g), can no longer increase the quality of load thing 7 or the application of force of 7 pairs of levers 5 of load thing, thereby stop sample 3 is stretched further, and controller was controlled described motor and was stopped this moment, so that the screw 4 on the described leading screw 2 stops to move.Replacedly, also can continue to increase the quality of load thing 7 or adjust the application of force that the position of load thing 7 on lever 5 continues to increase 5 pairs of samples 3 of lever, in this manner, described controller can be controlled described motor and continue rotation, when sample disconnects or destroy (this moment, load sensor 9 detected described anchor clamps stressed become suddenly 0 and send this stress value to controller) just control motor and stop.Perhaps replacedly, the shift value of described another anchor clamps that receive when described controller is during greater than a predetermined threshold (such as 5mm), can no longer increase the quality of load thing 7 or the application of force of 7 pairs of levers 5 of load thing, thereby stop sample 3 is stretched further, and controller was controlled described motor and was stopped this moment, so that the screw 4 on the described leading screw 2 stops to move.
Below, the preferred implementation in is described the course of work of the present utility model in detail in conjunction with the accompanying drawings.
At first sample is installed between a pair of anchor clamps 6, and fixes.Rotate manually or by motor and to make leading screw 2 rotations, thereby adjust the position of screw 4, so that 5 one-tenth horizontalitys of lever.Adjustment is such as the position of load thing 7 on lever 5 of load weight, and sample 3 is applied the pulling force of Pass Test requirement, this can be shown to the user by load sensor 9 detections and by display unit to the pulling force that sample 3 applies.The position of the anchor clamps below this moment can be set at initial position, and the anchor clamps below displacement transducer 8 detects at this moment are in 0 displacement place.Can adjust the load position of thing 7 on lever 5 gradually increases the pulling force that sample 3 is applied, and sample 3 is elongated gradually, and displacement transducer 8 detects the shift value n of the anchor clamps of below, i.e. the amount of elongation of sample 3, and this shift value n exported to controller.Thereby the rotation of control motor drove leading screw 2 rotations after controller received this shift value n, made that the screw 4 on the leading screw 2 moves down displacement n, thus lever 5 maintenance levels, and the thing 7 of loading so all is accurately constant by the pulling force that lever 5 is applied on the sample.
The extensiometer that utilizes the utility model to provide, can screw be moved up and down on leading screw by rotating threaded shaft, thereby the position of an end of adjustment (adjusting) lever, so that application of force lever remains level, thereby guarantee in entire test, the load thing all is accurately constant by the pulling force that lever is applied on the sample, and then has guaranteed to utilize the accuracy of the performance data of the material that tension test obtains.
Claims (10)
1. extensiometer, it is characterized in that, this extensiometer comprises frame (1), a pair of anchor clamps (6), leading screw (2), screw (4) and lever (5), anchor clamps in the described a pair of anchor clamps (6) are connected with described frame (1), another anchor clamps are connected with described lever (5), described leading screw (2) is rotatably connected on the described frame (1), and described screw (4) matches with described leading screw (2), and an end of described lever (5) and described screw (4) are hinged.
2. extensiometer according to claim 1 is characterized in that, this extensiometer also comprises load thing (7), and this load thing (7) is arranged on the described lever (5).
3. extensiometer according to claim 2 is characterized in that, described load thing (7) is arranged at the other end of described lever (5), and described another anchor clamps are connected on the position between described screw (4) and the described load thing (7).
4. extensiometer according to claim 1 is characterized in that this extensiometer also comprises motor, and the output shaft of described motor and described leading screw (2) are in transmission connection.
5. extensiometer according to claim 4 is characterized in that this extensiometer also comprises controller, and described controller is electrically connected with described motor.
6. extensiometer according to claim 5 is characterized in that, this extensiometer also comprises the displacement transducer (8) of the displacement that is used to detect described another anchor clamps.
7. extensiometer according to claim 6 is characterized in that, described displacement transducer (8) is connected with described another anchor clamps.
8. extensiometer according to claim 6 is characterized in that, described controller also is electrically connected with described displacement transducer (8) to receive the shift value of described another anchor clamps from described displacement transducer (8).
9. according to the described extensiometer of each claim among the claim 5-8, it is characterized in that, this extensiometer also comprises the stressed load sensor (9) that is used to detect described anchor clamps, and described load sensor (9) is connected between described frame (1) and the described anchor clamps.
10. extensiometer according to claim 9 is characterized in that, described controller also is connected with described load sensor (9) to receive the stress value of described anchor clamps from described load sensor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020573971 CN201819850U (en) | 2010-10-15 | 2010-10-15 | Tensile tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020573971 CN201819850U (en) | 2010-10-15 | 2010-10-15 | Tensile tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201819850U true CN201819850U (en) | 2011-05-04 |
Family
ID=43917800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020573971 Expired - Lifetime CN201819850U (en) | 2010-10-15 | 2010-10-15 | Tensile tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201819850U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706274A (en) * | 2016-12-22 | 2017-05-24 | 莱茵技术（上海）有限公司 | Device and method used for optical fiber splice tensile force testing |
| CN107101765A (en) * | 2017-06-23 | 2017-08-29 | 李祥露 | A kind of prestress detection device of bridge special steel wire |
| CN108801330A (en) * | 2018-07-25 | 2018-11-13 | 南京航空航天大学 | A kind of device for detecting harness installation quality |
| CN111189704A (en) * | 2020-01-14 | 2020-05-22 | 长安大学 | Concrete tension and compression dual-power creep test device and test method |
-
2010
- 2010-10-15 CN CN 201020573971 patent/CN201819850U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706274A (en) * | 2016-12-22 | 2017-05-24 | 莱茵技术（上海）有限公司 | Device and method used for optical fiber splice tensile force testing |
| CN107101765A (en) * | 2017-06-23 | 2017-08-29 | 李祥露 | A kind of prestress detection device of bridge special steel wire |
| CN108801330A (en) * | 2018-07-25 | 2018-11-13 | 南京航空航天大学 | A kind of device for detecting harness installation quality |
| CN111189704A (en) * | 2020-01-14 | 2020-05-22 | 长安大学 | Concrete tension and compression dual-power creep test device and test method |
| CN111189704B (en) * | 2020-01-14 | 2022-08-09 | 长安大学 | Concrete tension and compression dual-power creep test device and test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110504 |