CN107560933A - A kind of device and method of big load testing machine loading and measurement - Google Patents
A kind of device and method of big load testing machine loading and measurement Download PDFInfo
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- CN107560933A CN107560933A CN201711010170.8A CN201711010170A CN107560933A CN 107560933 A CN107560933 A CN 107560933A CN 201711010170 A CN201711010170 A CN 201711010170A CN 107560933 A CN107560933 A CN 107560933A
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Abstract
The invention provides the device and method of a kind of loading of big load testing machine and measurement, device includes：Big load loading device, it is connected with servo-control system, including Hydraulic servo system, testing machine actuator, test tool；Also include displacement transducer and load transducer, displacement transducer and load transducer are connected with testing machine actuator；Servo-control system includes servo control software and controller.Method includes：According to the load transducer that different test load configurations is suitable；The test tool that design matches with original big load sensor；The load transducer of large-tonnage and small tonnage is measured respectively, the sensor of different size is selected according to content of the test；Side crops industry experiment is carried out by big load test machine loader and servo control unit.The device can realize that big load testing machine carries out small tonnage load test, and in the case where not increasing equipment investment, the measurement accuracy and control that make experiment are greatly improved, and have widened the application of equipment significantly.
Description
Technical field
The present invention relates to large-tonnage test scale load to test field, is carried out in particular to a kind of big load testing machine
The device and method of side crops industry experiment.
Background technology
Generally, the testing machines of different loading tonnage grades are used for appropriate level load test, here it is why
There are 10 tons, 20 tons, 30 tons, 50 tons, the reason for 100 tons of all size testing machines.If done using 100 tons of testing machine only several
The load test of ton, although can also implement to test, the precision of experiment can not meet requirement, be commonly called as low load with strong power
It is exactly this reason.
Present testing machine is generally demarcated according to the full scale of test scale load by way of stepping, often
Rule are demarcated and measured according to 1,2,5,10 four gear, and 1 corresponds to full scale, and 2 correspond to the 50% of full scale, and 5 correspond to
The 20 of full scale, 10 correspond to the 10% of full scale, and the equipment dispatched from the factory of producer also having has more grade scales, but we
It is the technical indicator for having certain linearity and repeatability to know load transducer, if the linearity is weaker, can be passed through
The method of nonlinear compensation is corrected, if but repeatability is not all right, a point gear more again is not also used.Especially domestic production
Load transducer, also produced in batches without the load transducer of certain model, made based on the order with user
Determine the production schedule, therefore the sensor manufactured its material property does not obtain sufficient actual effect.Sensor when in use,
If any change occurs for temperature or humidity, it can all bring influence to characteristic, especially be influenceed most in the change of 10% gear
Greatly, although can also measure, test data does not have due precision by measuring discovery, that is to say, that experiment
Do not possess legal benefit.Therefore, it is just necessary if user needs to carry out side crops industry experiment using the testing machine of large-tonnage really
Inquire into correct test method.
In view of this, it is special to propose the present invention.
The content of the invention
The first object of the present invention is to provide the device of a kind of big load testing machine loading and measurement, and described device can be with
Realize the method that big load testing machine carries out side crops industry experiment.
The second object of the present invention is a kind of method for providing big load testing machine loading and measurement, and methods described is realized
Big load testing machine completes the accurate measurement and control of side crops industry experiment, can make in the case where not increasing equipment investment
The scope of equipment application greatly improves, and realizing different size of load test can meet that test specification and precision refer to
Mark.
In order to realize the above-mentioned purpose of the present invention, spy uses following technical scheme：
The embodiments of the invention provide the device of a kind of loading of big load testing machine and measurement, including：
Big load loading device, it is connected with servo-control system, including Hydraulic servo system, testing machine actuator, experiment work
Dress；
Hydraulic servo system is sequentially connected with testing machine actuator and test tool；
Big load loading device also includes displacement transducer and load transducer, displacement transducer and load transducer and examination
Test the connection of machine actuator；
Servo-control system includes servo control software and controller, and controller connects with displacement transducer and load transducer
Connect, servo control software is arranged in the host computer being connected with controller.
It is made up of said apparatus, power can be exported by Hydraulic servo system, be transferred to testing machine actuator, test specimen is pacified
On test tool, the servo loading that testing machine is completed by loading of the actuator to test tool is tested, and SERVO CONTROL is soft
Part and controller carry out the control of overall servo loading experiment.
Further, load transducer is set as the load transducer of different size.
According to the concrete condition of testing machine, when the small tonnage for doing different loads is tested, configuration is fitted with specific test load
The load transducer of conjunction.
Further, the specification of load transducer is 1.5-2 times of maximum test load.
During big load pilot system does the experiment of side crops industry, the range of selected load transducer must meet small load
The loading demand of lotus experiment, transducer range is generally 1.5-2 times of maximum finder charge, such as the maximum load tested is
2 tons, we generally match 3 tons of load transducer.
Further, test tool is set as the test tool of different size.
When carrying out side crops industry experiment with big load testing machine, although having selected the load transducer of different size,
It is or designs a set of test tool to match with original big load sensor, is conveniently replaceable.
Further, the measuring range control of displacement transducer is controlled in 2500 times/s in more than 4000mm, operating rate
More than.
The measuring range of displacement transducer is directly related to the movement travel of testing machine actuator；Operating rate FREQUENCY CONTROL
It can ensure the measurement accuracy of load test in 2500 times/more than s.
Further, the Bit andits control precision controlling of servo-control system is in below 0.2%Fs.
The Bit andits control precision of servo-control system is higher, and during being tested for side crops industry, the actuator of testing machine is defeated
Accurate control could be carried out by going out displacement, the control accuracy for improving side crops industry loading output.
Further, the displacement Loading Control speed of servo-control system is 0~1.0mm/s.
Because displacement Loading Control speed is 0~1.0mm/s, under the relatively low situation of this loading speed, big load is enhanced
The stability of lotus testing machine load output.
For the device of a kind of loading of big load testing machine and measurement that are provided in the present invention, there is simple in construction, operation
Conveniently, the features such as stability is high, enables the testing machine of large-tonnage to carry out the servo loading control of side crops industry, can effectively improve
Test accuracy.
A kind of device except providing big load testing machine loading and measurement, the present embodiment are additionally provided using the big load
Lotus testing machine carries out loading and the measuring method of side crops industry experiment.Comprise the following steps：
(A) suitable load transducer is configured according to different test loads；
(B) test tool that design matches with original big load sensor；
(C) big load sensor and small-load sensor are measured respectively, different size is selected according to content of the test
Sensor；
(D) side crops industry experiment is carried out by big load test machine loader and servo control unit.
By such improvement, big load testing machine can also carry out the loading and measurement of side crops industry experiment, result of the test
Precision be greatly improved.Suitable load transducer is equipped with for different test loads, meets the actual need of different loads
Ask, measured using the load transducer being consistent, itself is not influenceed by big load testing machine and big load sensor.
The test tool that design matches with original big load sensor, starting point is, when carrying out load test, needs
Big load sensor and small-load sensor are measured respectively, this just needs big load sensor being arranged at matches with it
Test tool on；And small-load sensor is then arranged on experiment test specimen, meet the actual demand measured respectively.
Load transducer is measured respectively, the sensor of different size is selected according to content of the test.The master of the step
Syllabus is, for the load test of different content, primarily determines that the range ability for testing required load transducer, pin
Selection small-load sensor to property, device guarantee is provided to improve test accuracy and control.
By big load test machine loader and servo control unit, tried on the premise of effective control accuracy
Test, the scope of equipment application is greatly improved.
Further, the highest test pressure difference that servo control software exports to test load, displacement and Hydraulic servo system
Carry out the setting of spacing value.During experiment, safeguard measure is carried out according to different experimental enviroments, above-mentioned parameters
Limit and the protection to equipment and test specimen to a certain extent, prevent that load that test specimen is born is excessive and deformed damaged,
Or the accident such as testing machine device fails.
Further, when the highest test pressure of test load, displacement and Hydraulic servo system output reaches spacing value, control
Device triggering interlocking, experiment stop, and experimental rig is shut down.
Experimental rig shut down can effective protection test process each component, improve the loading of big load testing machine with measuring
The security performance of method.
It is provided in an embodiment of the present invention to carry out the loading of big load testing machine with the method for measurement, the beneficial effect stated in realization
Fruit carries out load test at the same time it can also test specimens accurately different to rigidity using displacement-control mode；Test specimen can be realized
The Whole Process Control of rigidity, and extra measuring equipment need not be increased；It can realize that structural test uses displacement-control mode
The pseudo of progress.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described.
Fig. 1 is the loading of big load testing machine and the structural representation of measurement apparatus in the embodiment of the present invention 1；
Reference：
1- Hydraulic servo systems；2- testing machine actuator；
3- test tools；4- servo-control systems；
5- displacement transducers；6- small-load sensors.
Embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the present invention.It is unreceipted specific in embodiment
Condition person, the condition suggested according to normal condition or manufacturer are carried out.Agents useful for same or the unreceipted production firm person of instrument, it is
The conventional products that can be obtained by commercially available purchase.
Embodiment 1
The loading of big load testing machine is as follows with the carrying out practically process of measurement apparatus：
The Hydraulic servo system 1 of big load loading device, testing machine actuator 2 and test tool 3 are assembled successively, and will be watched
Control system 4 is taken to be connected with big load testing machine.The big load sensor of big load testing machine is connected with test tool 3, position
Displacement sensor 5 and small-load sensor 6 are connected with testing machine actuator, and servo control software is upper installed in being connected with controller
In the machine of position.The loading tonnage grade of big load testing machine is 100 tons, and the maximum test load of test specimen is 10 tons, and selected load passes
The maximum range of sensor is 20 tons, and test tool matches with 100 tons of load transducers.
The measuring range of displacement transducer is 4500mm, and operating rate is controlled in 3000 times/s；The position of servo-control system
Control accuracy control is moved in 0.15%Fs；Displacement Loading Control speed is 0.5mm/s.
Servo control software value spacing to the highest of test load is 35 tons, and displacement position-limiting value is 2000mm, Hydraulic servo system
The highest test pressure of output is 10MPa, during experiment, after the limitation more than above-mentioned each parameter, and testing machine stoppage protection,
Concrete structure is as shown in Figure 1.
Embodiment 2
The loading of big load testing machine is as follows with the carrying out practically process of measurement apparatus：
The Hydraulic servo system of big load loading device, testing machine actuator and test tool are assembled successively, and by servo
Control system is connected with big load testing machine.The load transducer of big load testing machine is connected with test tool, displacement sensing
Device and small-load sensor are connected with testing machine actuator, and servo control software is arranged in the host computer being connected with controller.
The loading tonnage grade of big load testing machine is 50 tons, and the maximum test load of test specimen is 5 tons, the maximum of selected load transducer
Range is 8 tons, and test tool matches with 50 tons of load transducers.
The measuring range of displacement transducer is 4200mm, and operating rate is controlled in 2800 times/s；The position of servo-control system
Control accuracy control is moved in 0.1%Fs；Displacement Loading Control speed is 0.3mm/s.
Servo control software value spacing to the highest of test load is 15 tons, and displacement position-limiting value is 1000mm, Hydraulic servo system
The highest test pressure of output is 5MPa, during experiment, after the limitation more than above-mentioned each parameter, and testing machine stoppage protection.
Embodiment 3
The loading of big load testing machine is as follows with the carrying out practically process of measurement apparatus：
The Hydraulic servo system of big load loading device, testing machine actuator and test tool are assembled successively, and by servo
Control system is connected with big load testing machine.The load transducer of big load testing machine is connected with test tool, displacement sensing
Device and small-load sensor are connected with testing machine actuator, and servo control software is arranged in the host computer being connected with controller.
The loading tonnage grade of big load testing machine is 150 tons, and the maximum test load of test specimen is 15 tons, and selected load transducer is most
Wide range is 30 tons, and test tool matches with 150 tons of load transducers.
The measuring range of displacement transducer is 4800mm, and operating rate is controlled in 3500 times/s；The position of servo-control system
Control accuracy control is moved in 0.08%Fs；Displacement Loading Control speed is 0.8mm/s.
Servo control software value spacing to the highest of test load is 50 tons, and displacement position-limiting value is 1500mm, Hydraulic servo system
The highest test pressure of output is 20MPa, during experiment, after the limitation more than above-mentioned each parameter, and testing machine stoppage protection.
Although illustrate and describing the present invention with specific embodiment, but will be appreciated that without departing substantially from the present invention's
Many other change and modification can be made in the case of spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (10)
- A kind of 1. device of big load testing machine loading and measurement, it is characterised in that including：Big load loading device, the big load loading device are connected with servo-control system, the big load loading device bag Include Hydraulic servo system, testing machine actuator, test tool；The Hydraulic servo system is sequentially connected with the testing machine actuator and the test tool；The big load loading device also includes displacement transducer and load transducer, institute's displacement sensors and load transducer It is connected with the testing machine actuator；The servo-control system includes servo control software and controller, the controller and institute's displacement sensors and load Sensor is connected, and the servo control software is arranged in the host computer being connected with controller.
- 2. device according to claim 1, it is characterised in that the load transducer is set as that the load of different size passes Sensor.
- 3. device according to claim 2, it is characterised in that the specification of the load transducer is maximum test load 1.5-2 again.
- 4. device according to claim 1, it is characterised in that the test tool is set as the experiment work of different size Dress.
- 5. device according to claim 1, it is characterised in that the measuring range of institute's displacement sensors is controlled in 4000mm More than；Preferably, the operating rate of institute's displacement sensors is controlled in 2500 times/more than s.
- 6. device according to claim 1, it is characterised in that the Bit andits control precision controlling of the servo-control system exists Below 0.2%Fs.
- 7. device according to claim 1, it is characterised in that the displacement Loading Control speed of the servo-control system is 0~1.0mm/s.
- 8. the loading of big load testing machine and the method for measurement, its feature are carried out using the device described in claim any one of 1-7 It is, comprises the following steps：(A) suitable load transducer is configured according to different test loads；(B) test tool that design matches with original big load sensor；(C) big load sensor and small-load sensor are measured respectively, the biography of different size is selected according to content of the test Sensor；(D) side crops industry experiment is carried out by big load test machine loader and servo control unit, you can.
- 9. according to the method for claim 8, it is characterised in that the servo control software is to test load, displacement and institute The highest test pressure for stating Hydraulic servo system output carries out the setting of spacing value respectively.
- 10. according to the method for claim 8, it is characterised in that when the highest of test load, displacement and Hydraulic servo system output When test pressure reaches spacing value, controller triggering interlocking, experiment stops, and experimental rig is shut down.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109573099A (en) * | 2018-12-17 | 2019-04-05 | 上海精密计量测试研究所 | Flight control simulator Tensile or Compressive Loading pilot system field calibration device |
| CN112857639A (en) * | 2021-02-18 | 2021-05-28 | 哈尔滨工业大学 | Servo incremental high-precision pressure sensor and application method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335900A (en) * | 2013-07-22 | 2013-10-02 | 长江水利委员会长江科学院 | Field servo control rock mass rheological tester |
| CN106908313A (en) * | 2017-04-13 | 2017-06-30 | 西安交通大学 | The small load control system of big load testing machine and control method |
| CN207396187U (en) * | 2017-10-25 | 2018-05-22 | 北京富力通达科技有限公司 | A kind of device of big load testing machine loading and measurement |
-
2017
- 2017-10-25 CN CN201711010170.8A patent/CN107560933A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335900A (en) * | 2013-07-22 | 2013-10-02 | 长江水利委员会长江科学院 | Field servo control rock mass rheological tester |
| CN106908313A (en) * | 2017-04-13 | 2017-06-30 | 西安交通大学 | The small load control system of big load testing machine and control method |
| CN207396187U (en) * | 2017-10-25 | 2018-05-22 | 北京富力通达科技有限公司 | A kind of device of big load testing machine loading and measurement |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109573099A (en) * | 2018-12-17 | 2019-04-05 | 上海精密计量测试研究所 | Flight control simulator Tensile or Compressive Loading pilot system field calibration device |
| CN112857639A (en) * | 2021-02-18 | 2021-05-28 | 哈尔滨工业大学 | Servo incremental high-precision pressure sensor and application method thereof |
| CN112857639B (en) * | 2021-02-18 | 2022-10-11 | 哈尔滨工业大学 | Servo incremental high-precision pressure sensor and using method thereof |
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Application publication date: 20180109 |