CN201575899U - Resonance type crankshaft bending fatigue tester based on strain control principle - Google Patents
Resonance type crankshaft bending fatigue tester based on strain control principle Download PDFInfo
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- CN201575899U CN201575899U CN2009202972040U CN200920297204U CN201575899U CN 201575899 U CN201575899 U CN 201575899U CN 2009202972040 U CN2009202972040 U CN 2009202972040U CN 200920297204 U CN200920297204 U CN 200920297204U CN 201575899 U CN201575899 U CN 201575899U
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- bending fatigue
- hoisting bracket
- strain control
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Abstract
A resonance type crankshaft bending fatigue tester based on a strain control principle comprises a fixed base, an upright post bracket and a hoisting bracket of a mechanical main frame; a height-adjusting basket, a suspension rigging, a tested crank throw, an inertial swinging arm and a crankshaft clamping device of a mechanical resonance system; and an electromagnetic vibration exciter, a power amplifier, an industrial control computer, a data acquisition card, a strain force transducer and a signal amplifier of a closed loop strain control system. The fixed base and the upright post bracket form the mechanical main frame of the tester; the hoisting bracket is mounted on the upright post bracket; the tested crank throw and the inertial swinging arm are connected into a whole through the crankshaft clamping device and is suspended on the height-adjusting basket by the suspension rigging; and the height-adjusting basket is hoisted on the hoisting bracket through a shaft and a bearing mounted at the upper end. The strain force transducer is stuck on the inertial swinging arm. The tester ensures that the test precision is greatly improved, test operations are simple and convenient, the consumption of easily damaged parts in the test is greatly reduced, test data are accurate and test software has high intellectualization.
Description
Technical field
The utility model belongs to product testing checkout equipment field, relates to a kind of resonant type crank bending fatigue testing machine based on the strain control principle.
Background technology
The resonant type crank bending fatigue testing machine is a kind of testing equipment commonly used in the mechanical industry, can carry out repeated bend test to bent axle or other axial workpiece.At present, domestic existing resonant type crank bending fatigue testing machine is divided into two kinds of strain control and Acceleration Control by control mode.Acceleration Control is subjected to the measuring accuracy that the restriction of sensor is difficult to reach higher (domestic acceleration transducer measuring accuracy generally only is ± 5%, external acceleration sensor accuracy also can only reach ± 3%).And need on the crank throw of each tested bent axle, to be provided with strainometer by domestic existing strain control method, and the bending load of each crank throw sample strain correspondence all will be through demarcating, suitable very complicated not only operates, need to consume a large amount of strainometers, and require also higher the technical merit of testing crew.
The utility model content
The purpose of this utility model is to provide a kind of simple in structure, easy to operate, resonant type crank bending fatigue testing machine based on the strain control principle that test accuracy is high.
The technical solution of the utility model is: based on the resonant type crank bending fatigue testing machine of strain control principle, comprise firm banking 1, column support 5, the hoisting bracket 8 of mechanical main frame; The height of mechanical resonance system is regulated and is spent orchid 7, suspention rigging 6, tested crank throw 2, inertia swing arm 3 and bent axle clamp device 4; The electromagnetic exciter 9 of closed loop strain control system, power amplifier 16, industrial computer 15, data collecting card 14, strain force cell 12, signal amplifier 13.It is characterized in that: firm banking 1 and column support 5 are formed the mechanical main frame that testing machine is installed the basis, and hoisting bracket 8 is housed on column support 5; Tested crank throw 2 is connected one with inertia swing arm 3 by bent axle clamp device 4 in the mechanical resonance system, is hung on highly to regulate by suspention rigging 6 and spends on blue 7, highly regulates and spends orchid 7 to be lifted on the hoisting bracket 8 by axle 10 and the bearing 11 that is installed in the upper end.Strain force cell 12 in the strain dynamometry control system sticks in the inertia swing arm 3.
The utility model can reach following beneficial effect: test accuracy improves greatly, and the precision of strain measurement can reach ± and 1%; Test operation is simple and convenient, and the consumption of test consumable accessory greatly reduces; Test figure is accurate, and test software is intelligent high.
Description of drawings
Accompanying drawing is the resonant type crank bending fatigue testing machine structure synoptic diagram of the utility model based on the strain control principle
Embodiment
As shown in drawings, the resonant type crank bending fatigue testing machine based on the strain control principle mainly comprises mechanical main frame, mechanical resonance system and closed loop strain control system three parts.Wherein mechanical main frame comprises firm banking 1, column support 5 and hoisting bracket 8; Resonator system comprises highly regulating spends orchid 7, suspention rigging 6, tested crank throw 2, inertia swing arm 3 and bent axle clamp device 4; Closed loop strain control system comprises electromagnetic exciter 9 and power amplifier 16 thereof, industrial computer 15, data collecting card 14, strain force cell 12, signal amplifier 13.Installation basic framework with firm banking 1 and column support 5 composition testing machines is equipped with hoisting bracket 8 on column support 5.Mechanical resonance system is lifted on the hoisting bracket 8.Wherein tested crank throw 2 is connected to form a mechanical resonant mechanism with inertia swing arm 3 by bent axle clamp device 4, this mechanical resonant mechanism is hung on highly to regulate by suspention rigging 6 and spends on blue 7, highly regulates and spends orchid 7 to be lifted on the hoisting bracket 8 by axle 10 and the bearing 11 that is installed in the upper end.Strain force cell 12 in the strain dynamometric system sticks in the inertia swing arm 3, becomes one with inertia swing arm 3.
Produce continual sinusoidal signal by test software control data capture card 14 when working based on the resonant type crank bending fatigue testing machine of strain control principle, power amplifier 16 amplifies signal, drive 15 pairs of inertia swing arms 3 of vibrator and apply sine excitation power, until the resonant frequency that reaches mechanical resonance system, this moment, tested crank throw 2 was subjected to the bend loading of positive and negative symmetry.Strain force cell 12 in the inertia swing arm 3 produces strain signal when 3 pairs of tested crank throws 2 of inertia swing arm load, transfer to industrial computer 15 and carry out data processing after signal amplifier 13 amplifies.Test software is tested crank throw 2 suffered moments of flexure with signal normalization, and this moment of flexure and testing requirements load are compared, judged, exciting force, excited frequency etc. is made corresponding adjustment, realizes the closed-loop control that tested crank throw 2 is loaded.
Claims (2)
1. resonant type crank bending fatigue testing machine based on the strain control principle comprises firm banking (1), column support (5), the hoisting bracket (8) of mechanical main frame; The height of mechanical resonance system is regulated and is spent orchid (7), suspention rigging (6), tested crank throw (2), inertia swing arm (3) and bent axle clamp device (4); The electromagnetic exciter (9) of closed loop strain control system, power amplifier (16), industrial computer (15), data collecting card (14), strain force cell (12), signal amplifier (13); It is characterized in that: firm banking (1) and column support (5) are formed the mechanical main frame that testing machine is installed the basis, and hoisting bracket (8) is housed on column support (5); Tested crank throw (2) is connected one with inertia swing arm (3) by bent axle clamp device (4) in the mechanical resonance system, hang on highly adjusting by suspention rigging (6) and spend on the orchid (7), highly regulate and spend orchid (7) to be lifted on the hoisting bracket (8) by axle (10) and the bearing (11) that is installed in the upper end.
2. the resonant type crank bending fatigue testing machine based on the strain control principle according to claim 1 is characterized in that: the strain force cell (12) in the strain dynamometry control system sticks in the inertia swing arm (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202972040U CN201575899U (en) | 2009-12-24 | 2009-12-24 | Resonance type crankshaft bending fatigue tester based on strain control principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202972040U CN201575899U (en) | 2009-12-24 | 2009-12-24 | Resonance type crankshaft bending fatigue tester based on strain control principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201575899U true CN201575899U (en) | 2010-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202972040U Expired - Fee Related CN201575899U (en) | 2009-12-24 | 2009-12-24 | Resonance type crankshaft bending fatigue tester based on strain control principle |
Country Status (1)
| Country | Link |
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| CN (1) | CN201575899U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288406A (en) * | 2011-07-08 | 2011-12-21 | 天润曲轴股份有限公司 | Clamping vibration exciting device for integral torsion fatigue test of crankshaft |
| CN104792485A (en) * | 2015-04-18 | 2015-07-22 | 中国船舶重工集团公司第七一二研究所 | Testing method of motor damping feature recognition |
| CN106813981A (en) * | 2017-02-13 | 2017-06-09 | 哈尔滨工业大学 | A kind of tensile fatigue test machine |
| CN107179193A (en) * | 2017-06-02 | 2017-09-19 | 中国北方发动机研究所(天津) | Adjustable adaptive Crankshaft Bend Fatigue Test device |
| CN107894333A (en) * | 2017-11-30 | 2018-04-10 | 内江金鸿曲轴有限公司 | Bent axle bending fatigue life detector |
| CN110542525A (en) * | 2019-06-25 | 2019-12-06 | 上海航空材料结构检测股份有限公司 | Method for testing vibration fatigue performance of metal in axial resonance state |
| CN112284660A (en) * | 2020-09-28 | 2021-01-29 | 浙江大学 | Bent torsion composite load test device of bent axle |
-
2009
- 2009-12-24 CN CN2009202972040U patent/CN201575899U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288406A (en) * | 2011-07-08 | 2011-12-21 | 天润曲轴股份有限公司 | Clamping vibration exciting device for integral torsion fatigue test of crankshaft |
| CN104792485A (en) * | 2015-04-18 | 2015-07-22 | 中国船舶重工集团公司第七一二研究所 | Testing method of motor damping feature recognition |
| CN106813981A (en) * | 2017-02-13 | 2017-06-09 | 哈尔滨工业大学 | A kind of tensile fatigue test machine |
| CN106813981B (en) * | 2017-02-13 | 2017-12-12 | 哈尔滨工业大学 | A kind of tensile fatigue test machine |
| CN107179193A (en) * | 2017-06-02 | 2017-09-19 | 中国北方发动机研究所(天津) | Adjustable adaptive Crankshaft Bend Fatigue Test device |
| CN107894333A (en) * | 2017-11-30 | 2018-04-10 | 内江金鸿曲轴有限公司 | Bent axle bending fatigue life detector |
| CN110542525A (en) * | 2019-06-25 | 2019-12-06 | 上海航空材料结构检测股份有限公司 | Method for testing vibration fatigue performance of metal in axial resonance state |
| CN112284660A (en) * | 2020-09-28 | 2021-01-29 | 浙江大学 | Bent torsion composite load test device of bent axle |
| CN112284660B (en) * | 2020-09-28 | 2022-05-03 | 浙江大学 | Bent torsion composite load test device of bent axle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100908 Termination date: 20141224 |
|
| EXPY | Termination of patent right or utility model |