CN108918139A - Dynamic load loading device with safety protection function - Google Patents
Dynamic load loading device with safety protection function Download PDFInfo
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- CN108918139A CN108918139A CN201810796283.3A CN201810796283A CN108918139A CN 108918139 A CN108918139 A CN 108918139A CN 201810796283 A CN201810796283 A CN 201810796283A CN 108918139 A CN108918139 A CN 108918139A
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- China
- Prior art keywords
- dynamic load
- protection function
- safety protection
- loading device
- testing stand
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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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (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 device with safety protection function.The dynamic load loading device with safety protection function includes pedestal, turbine box, Balance Iron, electromagnet, testing stand, fixture, connecting rod, crossbeam, and heel post is equipped between the crossbeam and the pedestal, and the heel post is used to support the crossbeam；The turbine box is set on the pedestal, and 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, and the upper end of the Balance Iron is provided with the electromagnet, and the testing stand is arranged in the top of the electromagnet；The predeterminated position of the heel post is equipped with close to switch, and the close switch, if the testing stand arrives at predeterminated position, controls supply current described in the supply current for reducing the electromagnet or terminal for detecting whether the testing stand arrives at predeterminated position.
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 with safety protection function
Load charger.
Background technique
It is continuous to the experiment and detection means of engineering goods with the development of mechanical industry and the continuous improvement of scientific research level
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 being equipped with corresponding folder
When tool, fixture is able to carry out gear life test, bar samples drawingand pressing fatigue, plate tensile sample drawingand pressing fatigue, 3 points/four-point bending
Fatigue.
During being loaded to gear, metal material and its component, since the size of the load of load is not easily-controllable
System, the load for being easy to appear load is excessive, in turn results in gear, metal material and its component failure.
Therefore, how dynamic load is carried out to test specimens such as gear, metal material and its components to be safely loaded with, become ability
Field technique personnel 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, propose a kind of with safety protection function
Dynamic load loading device, the problem of the existing technology can be improved.
A kind of dynamic load loading device with safety protection function is provided to achieve the purpose of the present invention, including
Pedestal, turbine box, Balance Iron, electromagnet, testing stand, fixture, connecting rod, crossbeam are equipped between the crossbeam and the pedestal
Heel post, the heel post are used to support the crossbeam；The turbine box is set on the pedestal, the upper end of the turbine box
The Balance Iron is connected, the turbine box is used to adjust the height of the Balance Iron, and the upper end of the Balance Iron is provided with described
Electromagnet, the top of the electromagnet are arranged the testing stand, are fixed with the fixture on the testing stand, the fixture is used for
Fixed test specimen, the fixture are connected to the crossbeam by connecting rod；The predeterminated position of the heel post is equipped with close to switch, institute
It states close to switch for detecting whether the testing stand arrives at predeterminated position, if the testing stand arrives at predeterminated position, controls
Reduce the electromagnet supply current or terminal described in supply current.
Preferably, ball screw, stepper motor are provided in the turbine box；The lower end of the ball screw connects turbine
Case, upper end connect the Balance Iron, and the stepper motor drives the ball screw stretching motion with the height of adjustment iron.
Preferably, the junction of the stepper motor and the ball screw is equipped with lubricating cup.
Preferably, the magnetic gap regulating device includes turbine and worm screw, and the turbine and the worm screw engage.
Preferably, force snesor is equipped between the connecting rod and the crossbeam.
Preferably, the pedestal is fixed on the basis of cement floor by pedestal spring.
The invention has the advantages that：
Dynamic load loading device provided by the invention with safety protection function is based on electromagnetism by load driving
Resonance, is superimposed upon on static load by dynamic load, applies stress to test specimen, dynamic load makes test specimen have fixed frequency
Rate, loss of energy is very small, opens vibration and is easy, and electrification systems may be implemented and search resonance point automatically without any adjustment；Test
Without abrasion, plant maintenance is simple for load；The frequency of load is high, and the test period is short, test period is greatly saved, in electromagnetic force pair
When test specimen is loaded, detect whether the testing stand arrives at predeterminated position close to switch by described, if the testing stand supports
Up to predeterminated position, then supply current described in the supply current for reducing the electromagnet or terminal is controlled.It is thus possible to realize machine
Tool position limitation protection or occur load more than full scale or when the abnormal conditions such as over-and under-voltage, overcurrent, communication mistake, to realize
Mandatory protection.
Detailed description of the invention
Fig. 1 is the structural representation for the dynamic load loading device with safety protection function that embodiment of the present invention provides
Figure.
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 attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
Referring to FIG. 1, Fig. 1 is the dynamic load loading device with safety protection function that embodiment of the present invention provides
Structural schematic diagram.
As shown in Figure 1, the present invention provide a kind of dynamic load loading device with safety protection function include pedestal 2,
Turbine box 3, Balance Iron 10, electromagnet 11, testing stand 18, fixture, 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 used to adjust the height of the Balance Iron 10
Degree, the upper end of the Balance Iron 10 are provided with the electromagnet 11, and the testing stand 18, institute is arranged in the top of the electromagnet 11
It states and is equipped with magnetic gap regulating device between testing stand 18 and the electromagnet 11, be fixed with fixture, the folder on the testing stand 18
Tool is connected to the crossbeam 24 by connecting rod 22 for fixing test specimen 20, the fixture.
Heel post is equipped between the crossbeam 24 and the pedestal 2, the heel post is used to support the crossbeam 24, described
The predeterminated position of heel post is equipped with close to switch, and the close switch is for detecting whether the testing stand 18 arrives at default position
It sets, if the testing stand 18 arrives at predeterminated position, controls and supplied described in the supply current for reducing the electromagnet 11 or terminal
Electric current.Mechanical position limitation protection may be implemented or 110% or over-and under-voltage of the load more than full scale, overcurrent, communication occur
When the abnormal conditions such as mistake, to realize mandatory protection.
Dynamic load loading device provided by the invention with safety protection function, load driving are based on electromagentic resonance,
It being superimposed upon on static load by dynamic load, applies stress to test specimen 20, dynamic load makes test specimen 20 have fixed frequency,
Loss of energy is very small, opens vibration and is easy, and electrification systems may be implemented and search resonance point automatically without any adjustment；Test load
Without abrasion, plant 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；Under the ball screw 4
End connection turbine box 3, upper end connect the Balance Iron 10, and the stepper motor 7 drives 4 stretching motion of ball screw to adjust
Save the height of Balance Iron 10.Ball screw 4 is driven to carry out stretching motion by stepper motor 7, with the height of adjustment iron 10,
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, by the adjustable nut 9 of special spanner with
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 weight tray for being used to support extra frequency modulation counterweight 14
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, 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 fixture includes upper grip 21 and lower collet 19, and 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, when not going beyond the spirit of the description and the drawings,
It should all be within the scope of the present invention.
Claims (6)
1. a kind of dynamic load loading device with safety protection function, which is characterized in that including pedestal, turbine box, balance
Iron, electromagnet, testing stand, fixture, connecting rod, crossbeam are equipped with heel post, the heel post between the crossbeam and the pedestal
It is used to support the crossbeam；The turbine box is set on the pedestal, and the upper end of the turbine box connects the Balance Iron, institute
Turbine box is stated for adjusting the height of the Balance Iron, the upper end of the Balance Iron is provided with the electromagnet, the electromagnet
Top the testing stand is set, the fixture is fixed on the testing stand, the fixture is for fixing test specimen, the fixture
The crossbeam is connected to by connecting rod；The predeterminated position of the heel post is equipped with close to switch, and the close switch is for examining
It surveys whether the testing stand arrives at predeterminated position, if the testing stand arrives at predeterminated position, controls and reduce the electromagnet
Supply current described in supply current or terminal.
2. the dynamic load loading device according to claim 1 with safety protection function, which is characterized in that the whirlpool
Ball screw, stepper motor are provided in roller box；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.
3. the dynamic load loading device according to claim 2 with safety protection function, which is characterized in that the step
Lubricating cup is equipped with into the junction of motor and the ball screw.
4. the dynamic load loading device according to claim 1 with safety protection function, which is characterized in that the magnetic
Gap regulating device includes turbine and worm screw, and the turbine and the worm screw engage.
5. the dynamic load loading device according to claim 1 with safety protection function, which is characterized in that the company
Force snesor is equipped between extension bar and the crossbeam.
6. the dynamic load loading device according to claim 1 with safety protection function, which is characterized in that the bottom
Seat is fixed on the basis of cement floor by pedestal spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810796283.3A CN108918139A (en) | 2018-07-19 | 2018-07-19 | Dynamic load loading device with safety protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810796283.3A CN108918139A (en) | 2018-07-19 | 2018-07-19 | Dynamic load loading device with safety protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108918139A true CN108918139A (en) | 2018-11-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201810796283.3A Pending CN108918139A (en) | 2018-07-19 | 2018-07-19 | Dynamic load loading device with safety protection function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117125441A (en) * | 2023-10-26 | 2023-11-28 | 江苏智锐博成能源科技有限公司 | Automatic feeding mechanism of PTC production line |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011038817A (en) * | 2009-08-07 | 2011-02-24 | Railway Technical Res Inst | Frequency variable fatigue testing device using electrically operated vibration generator |
| CN203965265U (en) * | 2014-05-29 | 2014-11-26 | 河海大学 | A kind of electromagnetic type suspension cable fatigue tester |
| 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 |
-
2018
- 2018-07-19 CN CN201810796283.3A patent/CN108918139A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN203965265U (en) * | 2014-05-29 | 2014-11-26 | 河海大学 | A kind of electromagnetic type suspension cable fatigue tester |
| 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 |
Non-Patent Citations (2)
| Title |
|---|
| 米亦农: "国外高频疲劳试验机的发展状况", 《材料试验机》 * |
| 郝岷: "《自动化生产线设备维修》", 31 August 2011 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117125441A (en) * | 2023-10-26 | 2023-11-28 | 江苏智锐博成能源科技有限公司 | Automatic feeding mechanism of PTC production line |
| CN117125441B (en) * | 2023-10-26 | 2024-01-26 | 江苏智锐博成能源科技有限公司 | Automatic feeding mechanism of PTC production line |
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Application publication date: 20181130 |