CN108844736A - dynamic load loading control system - Google Patents
dynamic load loading control system Download PDFInfo
- Publication number
- CN108844736A CN108844736A CN201810795989.8A CN201810795989A CN108844736A CN 108844736 A CN108844736 A CN 108844736A CN 201810795989 A CN201810795989 A CN 201810795989A CN 108844736 A CN108844736 A CN 108844736A
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- China
- Prior art keywords
- dynamic load
- control system
- loading control
- controller
- acquisition device
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/021—Gearings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention belongs to the technical fields such as the fatigue test of gear, and in particular to a kind of dynamic load Loading Control System.Dynamic load Loading Control System provided by the invention, force snesor is equipped between the connecting rod and the crossbeam, dynamic load acquisition device is equipped on the electromagnetic exciter, the signal receiving end of the controller is separately connected the signal sending end of the force snesor, the signal sending end of the dynamic load acquisition device, after the controller obtains the practical dynamic load that dynamic load acquisition device is sent, the practical dynamic load is compared with default dynamic load, if the difference of the two is greater than preset value, controller control electromagnetic exciter is acted accordingly, so that the dynamic load that electromagnetic exciter is applied is in default range.
Description
Technical field
The invention belongs to the technical fields such as the fatigue test of gear, and in particular to a kind of dynamic load Loading Control System.
Background technique
With the development of mechanical industry and the continuous improvement of scientific research level, experiment and detection means to engineering goods are not
It is disconnected that more stringent requirements are proposed.
In design of gears, especially for relatively high gear is required in terms of reliability, according to reliability theory pair
The result for the assessment that safety coefficient carries out can not almost reflect the reliability level of gear.It is thus typically necessary to gear
Fatigue test is carried out, to examine the reliability and durability of gear, especially.
The fatigue test of gear, metal material and its component needs to measure gear, metal material and its component and is drawing, pressing
Or the fatigue properties under tension and compression alternating load, fracture mechanics, the test and detection of crack growth rate etc..It is corresponding being equipped with
When fixture, fixture is able to carry out gear life test, bar samples drawingand pressing fatigue, plate tensile sample drawingand pressing fatigue, at 3 points/4 points
Flexural fatigue.
When being loaded using dynamic load to gear, metal material and its component, the size of dynamic load is not easily-controllable
System, therefore, when carrying out dynamic load load to test specimens such as gear, metal material and its components, how in required range
The size for controlling dynamic load, becomes those skilled in the art's technical problem urgently to be resolved.
Summary of the invention
The present invention is directed at least solve the technical problems existing in the prior art, a kind of dynamic load load control is proposed
System processed can improve the problem of the existing technology.
Provide a kind of dynamic load Loading Control System to achieve the purpose of the present invention, including controller, pedestal,
Electromagnetic exciter, testing stand, fixture, connecting rod, force snesor, crossbeam, the electromagnetic exciter are set on the pedestal,
The testing stand is arranged in the top of the electromagnetic exciter, the fixture is fixed on the testing stand, the fixture is for solid
Determine test specimen, the fixture is connected to the crossbeam by connecting rod, and power is equipped between the connecting rod and the crossbeam and is sensed
Device, the electromagnetic exciter are equipped with dynamic load acquisition device, and the signal receiving end of the controller is separately connected the power
The signal sending end of the signal sending end of sensor, the dynamic load acquisition device, the controller obtain dynamic load and adopt
After the practical dynamic load that acquisition means are sent, which is compared with default dynamic load, if the difference of the two
Value is greater than preset value, and controller control electromagnetic exciter is acted accordingly.
Preferably, the controller is PC machine, and the force snesor, the dynamic load acquisition device are all made of monolithic
Machine, the controller are communicated with the force snesor, the dynamic load acquisition device by RS-23 2C interface.
Preferably, the electromagnetic exciter further includes turbine box, Balance Iron, electromagnet, and the turbine box is set to described
On pedestal, the upper end of the turbine box connects the Balance Iron, and the turbine box is used to adjust the height of the Balance Iron, institute
The upper end for stating Balance Iron is provided with the electromagnet, and the testing stand is arranged in the top of the electromagnet.
Preferably, ball screw, stepper motor are provided in the turbine box；The lower end of the ball screw connects whirlpool
Roller box, upper end connect the Balance Iron, and the stepper motor drives the ball screw stretching motion with the height of adjustment iron
Degree.
Preferably, the junction of the stepper motor and the ball screw is equipped with lubricating cup.
Preferably, heel post is equipped between the crossbeam and the pedestal, the heel post is used to support the crossbeam.
The invention has the advantages that：
Dynamic load Loading Control System provided by the invention is equipped with power between the connecting rod and the crossbeam and passes
Sensor, is equipped with dynamic load acquisition device on the electromagnetic exciter, and the signal receiving end of the controller is separately connected institute
The signal sending end of force snesor, the signal sending end of the dynamic load acquisition device are stated, the controller obtains dynamic and carries
After the practical dynamic load that lotus acquisition device is sent, which is compared with default dynamic load, if the two
Difference be greater than preset value, controller control electromagnetic exciter acted accordingly so that electromagnetic exciter was applied
Dynamic load is in default range.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the dynamic load Loading Control System that embodiment of the present invention provides.
Wherein, description of symbols：
Pedestal spring 1, pedestal 2, turbine box 3, ball screw 4, travel switch 5, guide post 6, stepper motor 7, lubricating cup 8,
Nut 9, Balance Iron 10, electromagnet 11, button box 12, weight tray 13, frequency modulation counterweight 14, screw 15, turbine 16, worm screw 17,
Testing stand 18, lower collet 19, test specimen 20, upper grip 21, connecting rod 22, force snesor 23, crossbeam 24, big semielliptic spring 25.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to
The embodiment of attached drawing description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
The present invention provides dynamic load Loading Control System, including controller, pedestal, electromagnetic exciter, test
Platform, fixture, connecting rod, force snesor, crossbeam, the electromagnetic exciter are set on the pedestal, the electromagnetic exciter
The testing stand is arranged in top, the fixture is fixed on the testing stand, the fixture is for fixing test specimen, the fixture
It is connected to the crossbeam by connecting rod, force snesor, the electromagnetic exciter are equipped between the connecting rod and the crossbeam
It is equipped with dynamic load acquisition device, the signal that the signal receiving end of the controller is separately connected the force snesor is sent
It holds, the signal sending end of the dynamic load acquisition device, the controller obtains the reality that dynamic load acquisition device is sent
After dynamic load, which is compared with default dynamic load, if the difference of the two is greater than preset value, control
Device control electromagnetic exciter processed is acted accordingly.
Dynamic load Loading Control System provided by the invention is equipped with power between the connecting rod and the crossbeam and passes
Sensor, is equipped with dynamic load acquisition device on the electromagnetic exciter, and the signal receiving end of the controller is separately connected institute
The signal sending end of force snesor, the signal sending end of the dynamic load acquisition device are stated, the controller obtains dynamic and carries
After the practical dynamic load that lotus acquisition device is sent, which is compared with default dynamic load, if the two
Difference be greater than preset value, controller control electromagnetic exciter acted accordingly so that electromagnetic exciter was applied
Dynamic load is in default range.
Referring to FIG. 1, Fig. 1 is the structural schematic diagram for the dynamic load Loading Control System that embodiment of the present invention provides.
As shown in Figure 1, it includes pedestal 2, turbine box 3, Balance Iron that the present invention, which provides a kind of dynamic load Loading Control System,
10, electromagnet 11, testing stand 18, lower collet 19, upper grip 21, connecting rod 22, crossbeam 24, the turbine box 3 are set to described
On pedestal 2, the upper end of the turbine box 3 connects the Balance Iron 10, and the turbine box 3 is for adjusting the Balance Iron 10
Highly, the upper end of the Balance Iron 10 is provided with the electromagnet 11, and the testing stand is arranged in the top of the electromagnet 11
18, it is equipped with magnetic gap regulating device between the testing stand 18 and the electromagnet 11, is fixed on the testing stand 18 described
Lower collet 19, for fixing test specimen 20 between the lower collet 19 and the upper grip 21, the upper grip 21 passes through connecting rod
22 are connected to the crossbeam 24.
Dynamic load Loading Control System provided by the invention, load driving is based on electromagentic resonance, folded by dynamic load
It is added on static load, applies stress to test specimen 20, dynamic load makes test specimen 20 have fixed frequency, and loss of energy is very
It is small, it opens vibration and is easy, electrification systems may be implemented and search resonance point automatically without any adjustment；Test load is without abrasion, equipment
Maintenance is simple；The frequency of load is high, and the test period is short, and test period is greatly saved.
In preferred scheme, ball screw 4, stepper motor 7 are provided in the turbine box 3；The ball screw 4
Lower end connects turbine box 3, and upper end connects the Balance Iron 10, and the stepper motor 7 drives 4 stretching motion of ball screw
With the height of adjustment iron 10.Ball screw 4 is driven to carry out stretching motion by stepper motor 7, with adjustment iron 10
Highly, the stepless speed regulation of 10 height of Balance Iron may be implemented.
In specific scheme, the upper end of ball screw 4 is set with nut 9, passes through the adjustable nut 9 of special spanner
With the gap between ball screw 4.
In preferred scheme, the junction of the stepper motor 7 and the ball screw 4 is equipped with lubricating cup 8, passes through lubricating cup 8
Lubricating oil can be added to ball screw 4, ball screw 4 is lubricated.
It further include the frequency modulation counterweight 14 for adjusting resonant frequency, the frequency modulation counterweight 14 is symmetrically set in preferred scheme
In the two sides of the electromagnet 11.Frequency modulation counterweight 14 is asymmetrical load, and frequency modulation counterweight 14 is connected to examination by big semielliptic spring 25
It tests on the main screw rod between platform 18 and electromagnet 11, excitation system is constituted by frequency modulation counterweight 14 and big semielliptic spring 25, by changing
The quantity of modified tone frequency counterweight 14 can change running frequency.
In preferred scheme, the lower section of the frequency modulation counterweight 14 is equipped with the counterweight support for being used to support extra frequency modulation counterweight 14
Disk 13.Extra frequency modulation counterweight 14 can be placed on weight tray 13.
It further include the screw 15 for passing through the frequency modulation counterweight 14 in preferred scheme.For the ease of placing frequency modulation weight
Code 14, frequency modulation counterweight 14 can pass through the screw 15, and the screw of different length can be selected according to the quantity of frequency modulation counterweight 14
15。
In preferred scheme, the magnetic gap regulating device includes turbine 16 and worm screw 17, the turbine 16 and the worm screw
17 engagements, the main screw rod between the 16 joint test platform 18 of turbine and electromagnet 11 can rotate snail by special handle
Bar 17, and then pass through the length that revolving wormgear 16 adjusts main screw rod, to adjust magnetic air gap.
In preferred scheme, heel post is equipped between the crossbeam 24 and the pedestal 2, the heel post is used to support
The crossbeam 24.
In further embodiment, the predeterminated position of the heel post is equipped with close to switch, and the close switch is for detecting
Whether the testing stand 18 arrives at predeterminated position, if the testing stand 18 arrives at predeterminated position, controls and reduces the electromagnet
Supply current described in 11 supply current or terminal.Mechanical position limitation protection may be implemented or load occur more than full scale
When the abnormal conditions such as 110% or over-and under-voltage, overcurrent, communication mistake, to realize mandatory protection.
In preferred scheme, the heel post is equipped with button box 12, and the button box 12 manually controls letter for receiving
Number, it is acted with controlling the stepper motor 7.
In preferred scheme, it is equipped with force snesor 23 between the connecting rod 22 and the crossbeam 24, passes through force snesor
23 can detecte the pulling force or pressure that the test specimen 20 is born.
In preferred scheme, the pedestal 2 is fixed on the basis of cement floor by 2 spring 1 of pedestal.
It is located at 3 two sides of turbine box in preferred scheme, on the pedestal 2 and is equipped with guide post 6, the turbine box 3
Two sides are bonded with the guide post 6, and the turbine box 3 moves up and down along the guide post 6.Guide post 6 plays guiding and limit
Effect.
In specific embodiment, the both ends of test specimen 20 are clamped in respectively in the grasping part of upper grip 21 and lower collet 19.
Structure, feature and effect of the invention, the above institute are described in detail based on the embodiments shown in the drawings
Only presently preferred embodiments of the present invention is stated, but the present invention does not limit the scope of implementation as shown in the drawings, it is all according to structure of the invention
Think made change or equivalent example modified to equivalent change, does not go beyond the spirit of the description and the drawings
When, it should all be within the scope of the present invention.
Claims (7)
1. a kind of dynamic load Loading Control System, which is characterized in that including controller, pedestal, electromagnetic exciter, testing stand,
Fixture, connecting rod, force snesor, crossbeam, the electromagnetic exciter are set on the pedestal, the top of the electromagnetic exciter
The testing stand is set, the fixture is fixed on the testing stand, for the fixture for fixing test specimen, the fixture passes through company
Extension bar is connected to the crossbeam, and force snesor is equipped between the connecting rod and the crossbeam, and the electromagnetic exciter is equipped with
Dynamic load acquisition device, the signal receiving end of the controller are separately connected the signal sending end, described of the force snesor
The signal sending end of dynamic load acquisition device, the controller obtain the practical dynamic load that dynamic load acquisition device is sent
Afterwards, which is compared with default dynamic load, if the difference of the two is greater than preset value, controller control electricity
Magnet exciter is acted accordingly.
2. dynamic load Loading Control System according to claim 1, which is characterized in that the controller is PC machine, institute
State force snesor, the dynamic load acquisition device is all made of single-chip microcontroller, the controller and the force snesor, the dynamic
Load acquisition device is communicated by RS-232C interface.
3. dynamic load Loading Control System according to claim 1, which is characterized in that the electromagnetic exciter further includes
Turbine box, Balance Iron, electromagnet, the turbine box are set on the pedestal, and the upper end of the turbine box connects the balance
Iron, the turbine box are used to adjust the height of the Balance Iron, and the upper end of the Balance Iron is provided with the electromagnet, the electricity
The testing stand is arranged in the top of magnet.
4. dynamic load Loading Control System according to claim 3, which is characterized in that be provided with rolling in the turbine box
Ballscrew, stepper motor；The lower end of the ball screw connects turbine box, and upper end connects the Balance Iron, the stepper motor
Drive the ball screw stretching motion with the height of adjustment iron.
5. dynamic load Loading Control System according to claim 4, which is characterized in that the stepper motor and the rolling
The junction of ballscrew is equipped with lubricating cup.
6. dynamic load Loading Control System according to claim 1 or 2, which is characterized in that the crossbeam and the bottom
Heel post is equipped between seat, the heel post is used to support the crossbeam.
7. dynamic load Loading Control System according to claim 1, which is characterized in that the pedestal passes through pedestal spring
It is fixed on the basis of cement floor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810795989.8A CN108844736A (en) | 2018-07-19 | 2018-07-19 | dynamic load loading control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810795989.8A CN108844736A (en) | 2018-07-19 | 2018-07-19 | dynamic load loading control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108844736A true CN108844736A (en) | 2018-11-20 |
Family
ID=64196571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810795989.8A Pending CN108844736A (en) | 2018-07-19 | 2018-07-19 | dynamic load loading control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108844736A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108565A (en) * | 2019-06-05 | 2019-08-09 | 长春浩园试验机有限公司 | High frequency composite electron universal testing machine |
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| CN105004620A (en) * | 2015-07-16 | 2015-10-28 | 浙江工业大学 | High-frequency fatigue testing machine dynamic load error compensation method |
| CN206725368U (en) * | 2017-05-16 | 2017-12-08 | 吉林大学 | A kind of high-frequency electrical magnetic-type vibrator |
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2018
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Patent Citations (5)
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|---|---|---|---|---|
| JP2011038817A (en) * | 2009-08-07 | 2011-02-24 | Railway Technical Res Inst | Frequency variable fatigue testing device using electrically operated vibration generator |
| CN204142592U (en) * | 2014-05-12 | 2015-02-04 | 常州市旭坤包装材料有限公司 | Electromagnetic exciting shaking table |
| CN104777054A (en) * | 2015-05-18 | 2015-07-15 | 浙江工业大学 | Method for identifying parameters of resonant fatigue crack propagation test vibration system based on soft sensing technology |
| CN105004620A (en) * | 2015-07-16 | 2015-10-28 | 浙江工业大学 | High-frequency fatigue testing machine dynamic load error compensation method |
| CN206725368U (en) * | 2017-05-16 | 2017-12-08 | 吉林大学 | A kind of high-frequency electrical magnetic-type vibrator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108565A (en) * | 2019-06-05 | 2019-08-09 | 长春浩园试验机有限公司 | High frequency composite electron universal testing machine |
| CN110108565B (en) * | 2019-06-05 | 2024-02-09 | 长春浩园试验机有限公司 | High-frequency composite electronic universal testing machine |
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Application publication date: 20181120 |