CN104359670A - Static load calibration device for bending fatigue test of crankshaft - Google Patents
Static load calibration device for bending fatigue test of crankshaft Download PDFInfo
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- CN104359670A CN104359670A CN201410711094.3A CN201410711094A CN104359670A CN 104359670 A CN104359670 A CN 104359670A CN 201410711094 A CN201410711094 A CN 201410711094A CN 104359670 A CN104359670 A CN 104359670A
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- load
- crankshaft
- load sensor
- fatigue test
- fixture
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Abstract
The invention discloses a static load calibration device for a bending fatigue test of a crankshaft. The device comprises a support framework, a load sensor, a digital display standard load measuring instrument, a turbine lead screw lifter, a crankshaft sample and a fixture, wherein the load sensor and the turbine lead screw lifter are respectively arranged on fixing plates at two sides of the support framework; the crankshaft sample is clamped in the fixture, and the crankshaft sample and the fixture are suspended in the support framework together; two swing arms of the fixture are positioned between the turbine lead screw lifter and the load sensor; a lead screw of the turbine lead screw lifter is contacted with one swing arm; an ejector pin of the load sensor is contacted with the other swing arm; and the load sensor transmits the received pressure to the digital display standard load measuring instrument, and the loading force value is displayed; and meanwhile, a strain value is obtained by virtue of a strain gage arranged on the top of the crankshaft sample, so that the static load calibration for the bending fatigue test of the crankshaft is realized. The device disclosed by the invention is reasonable in structure, easy and convenient to operate, stable in numerical value calibration linearity and high in working efficiency and is an ideal static load calibration device for the bending fatigue test of the crankshaft.
Description
Technical field
The present invention relates to the bending fatigue testing device of bent axle, specifically a kind of Crankshaft Bend Fatigue Test static load caliberating device.
Background technology
Bent axle is the vitals of motor car engine, and in engine actual moving process, it is that bent axle lost efficacy modal form that bending fatigue is destroyed.Crankshaft Bend Fatigue Test is the main form of inspection crankshaft fatigue strength.Needing in process of the test carries out static demarcating loading.At present, static demarcating loading equipemtn scattering device, device is complicated, and labile factor is many, easily causes damage to sample, demarcates numerical error greatly, can not meet increasing test mission.Up to now, yet there are no the bibliographical information of special Crankshaft Bend Fatigue Test static load caliberating device.
Summary of the invention
Technical matters to be solved by this invention is to overcome above-mentioned the deficiencies in the prior art, provides a kind of rational in infrastructure, simple to operate, time saving and energy saving, demarcates numerical linear and stablize, the Crankshaft Bend Fatigue Test static load caliberating device that work efficiency is high.
The present invention solve the problem adopt technical scheme be: a kind of Crankshaft Bend Fatigue Test static load caliberating device, it is characterized in that: it comprises support frame, load sensor, digital display scale load measuring instrument, worm screw lifter, bent axle sample, fixture, described load sensor and worm screw lifter are arranged on the fixed head of support frame both sides respectively, load sensor is connected with digital display scale load measuring instrument, described bent axle specimen clamping is in fixture, and hang on together in support frame, two swing arms of fixture are between worm screw lifter and load sensor, the leading screw of described worm screw lifter contacts with a swing arm, for loading force, the thimble of described load sensor contacts with another swing arm, load sensor by the pressure transmission that receives to digital display scale load measuring instrument, display loads force value, foil gauge simultaneously by being arranged on bent axle sample top obtains a strain value, the static load realizing Crankshaft Bend Fatigue Test is demarcated.
Further, between the fixed head of described support frame both sides, be provided with four crossbeams, composition framed structure.
Further, the center line of described load sensor thimble and worm screw lifter leading screw is positioned on same axis.
When the present invention uses, the hand rotating disk of rotary turbine screw-threaded shaft elevator, the leading screw of screw-threaded shaft elevator stretches out, bent axle sample and fixture are loaded, loading force is transferred to digital display scale load measuring instrument by load sensor, the display of digital display scale load measuring instrument loads force value, and the foil gauge simultaneously by being arranged on bent axle sample top obtains a strain value, and the static load realizing Crankshaft Bend Fatigue Test is demarcated.Against existing technologies, the present invention is rational in infrastructure, greatly reduces the working strength of testing crew, easy and simple to handle, and demarcate numerical linear and stablize, work efficiency is high, is a kind of desirable Crankshaft Bend Fatigue Test static load caliberating device.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is assembly structure schematic diagram of the present invention.
Fig. 2 is that schematic diagram is looked on the right side of Fig. 1.
Label in figure is: 1. load sensor, 2. worm screw lifter, 3. support frame, 4. hand rotating disk, 5. fixture, 6. digital display scale load measuring instrument, 7. bent axle sample.
Embodiment
As can be seen from Fig. 1, Fig. 2, a kind of Crankshaft Bend Fatigue Test static load caliberating device, it comprises support frame 3, load sensor 1, digital display scale load measuring instrument 6, worm screw lifter 2, bent axle sample 7, fixture 5 etc.Described load sensor 1 and worm screw lifter 2 are arranged on the fixed head of support frame 3 both sides respectively, and load sensor 1 is connected with digital display scale load measuring instrument 6.Four crossbeams are provided with, composition framed structure between the fixed head of described support frame 3 both sides.This Stability Analysis of Structures, is positioned on fixing platform, can not produces and rock during test.The accuracy measured can be ensured like this.
Described bent axle sample 7 clamping in fixture 5, and hangs in support frame 3 together, and two swing arms of fixture 5 are between worm screw lifter 2 and load sensor 1.The leading screw of described worm screw lifter 2 contacts with a swing arm, and leading screw is top to be withstood on the specified point of swing arm, for loading force.The hand rotating disk 4 of rotary turbine screw-threaded shaft elevator 2, the leading screw in worm screw lifter can stretch.The thimble of described load sensor 1 contacts with another swing arm, by load sensor 1 by the pressure transmission that receives to digital display scale load measuring instrument 6, the display of digital display scale load measuring instrument 6 loads force value, and the foil gauge simultaneously by being arranged on bent axle sample 7 top obtains a strain value.Carry out repetition according to test procedure to this operation, until complete static load rating test, the static load realizing Crankshaft Bend Fatigue Test is demarcated.
The center line of described load sensor 1 thimble and worm screw lifter 2 leading screw is positioned on same axis, accurately to transmit loading force, ensures the error of each loading force in allowed limits.In addition, load sensor and digital display scale load measuring instrument will be calibrated, to ensure the accuracy measured.
When the present invention works, support frame 3 is placed on platform, rotates hand rotating disk 4, the leading screw retraction of screw-threaded shaft elevator, then puts into the bent axle sample hung on crossbeam and fixture between load sensor and worm screw lifter.After all preliminary works are ready, rotate backward hand rotating disk, the leading screw of worm screw lifter stretches out, and loads bent axle sample and fixture, and loading force is transferred to digital display scale load measuring instrument by load sensor.Testing crew obtains a true force value by measuring instrument, obtains a strain value by the foil gauge on bent axle top simultaneously.The static load realizing Crankshaft Bend Fatigue Test is demarcated.
The present invention is rational in infrastructure, greatly reduces the working strength of testing crew, easy and simple to handle, and demarcate numerical linear and stablize, work efficiency is high, is a kind of desirable Crankshaft Bend Fatigue Test static load caliberating device.
Claims (3)
1. a Crankshaft Bend Fatigue Test static load caliberating device, it is characterized in that: it comprises support frame, load sensor, digital display scale load measuring instrument, worm screw lifter, bent axle sample, fixture, described load sensor and worm screw lifter are arranged on the fixed head of support frame both sides respectively, load sensor is connected with digital display scale load measuring instrument, described bent axle specimen clamping is in fixture, and hang on together in support frame, two swing arms of fixture are between worm screw lifter and load sensor, the leading screw of described worm screw lifter contacts with a swing arm, for loading force, the thimble of described load sensor contacts with another swing arm, load sensor by the pressure transmission that receives to digital display scale load measuring instrument, display loads force value, foil gauge simultaneously by being arranged on bent axle sample top obtains a strain value, the static load realizing Crankshaft Bend Fatigue Test is demarcated.
2. Crankshaft Bend Fatigue Test static load caliberating device according to claim 1, is characterized in that: be provided with four crossbeams between the fixed head of described support frame both sides, composition framed structure.
3. Crankshaft Bend Fatigue Test static load caliberating device according to claim 1, is characterized in that: the center line of described load sensor thimble and worm screw lifter leading screw is positioned on same axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410711094.3A CN104359670A (en) | 2014-12-01 | 2014-12-01 | Static load calibration device for bending fatigue test of crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410711094.3A CN104359670A (en) | 2014-12-01 | 2014-12-01 | Static load calibration device for bending fatigue test of crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104359670A true CN104359670A (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410711094.3A Pending CN104359670A (en) | 2014-12-01 | 2014-12-01 | Static load calibration device for bending fatigue test of crankshaft |
Country Status (1)
| Country | Link |
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| CN (1) | CN104359670A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683703A (en) * | 2020-12-28 | 2021-04-20 | 国营第六一六厂 | Crankshaft bending fatigue test fixture capable of being connected with universal fatigue machine |
| CN113848049A (en) * | 2021-10-09 | 2021-12-28 | 长春仟邦测试设备有限公司 | Digital large-range high-precision multifunctional crankshaft fatigue testing machine |
-
2014
- 2014-12-01 CN CN201410711094.3A patent/CN104359670A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683703A (en) * | 2020-12-28 | 2021-04-20 | 国营第六一六厂 | Crankshaft bending fatigue test fixture capable of being connected with universal fatigue machine |
| CN113848049A (en) * | 2021-10-09 | 2021-12-28 | 长春仟邦测试设备有限公司 | Digital large-range high-precision multifunctional crankshaft fatigue testing machine |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150218 |
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| WD01 | Invention patent application deemed withdrawn after publication |