CN112683703A - Crankshaft bending fatigue test fixture capable of being connected with universal fatigue machine - Google Patents
Crankshaft bending fatigue test fixture capable of being connected with universal fatigue machine Download PDFInfo
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- CN112683703A CN112683703A CN202011585485.7A CN202011585485A CN112683703A CN 112683703 A CN112683703 A CN 112683703A CN 202011585485 A CN202011585485 A CN 202011585485A CN 112683703 A CN112683703 A CN 112683703A
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- clamping block
- fixedly connected
- crankshaft
- test fixture
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- 238000005452 bending Methods 0.000 title claims abstract description 38
- 238000009661 fatigue test Methods 0.000 title claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 7
- 238000010008 shearing Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The invention discloses a crankshaft bending fatigue test fixture capable of being connected with a universal fatigue machine, wherein a first clamping block is connected inside a sliding rail in a sliding mode, a rotating frame is fixedly connected to one side of a fixture base, a mounting hole is formed in one side of a second clamping block, a connecting sleeve is inserted into the mounting hole, and one end of a rotating shaft is in transmission connection with a power mechanism. The invention has the advantages that the clamp can stably move and the crankshaft is convenient to install by arranging the hydraulic cylinder, the pulley and the gear rack, the aim of improving the accuracy of test data is fulfilled by arranging the transmission chain, the small chain wheel and the large chain wheel in a matching way, the effect of solving the problem that the thread is broken by the shearing force is achieved by arranging the magnetorheological fluid device, and the aim of prolonging the service life of the clamp is fulfilled.
Description
Technical Field
The invention belongs to the technical field of crankshaft bending fatigue tests, and relates to a crankshaft bending fatigue test clamp capable of being connected with a universal fatigue machine.
Background
Crankshaft is an important component of an automotive engine, and during actual engine operation, bending fatigue failure is the most common form of crankshaft failure. The crankshaft bending fatigue test is the most dominant form of testing crankshaft fatigue strength. And static calibration loading is required in the test process. At present, static calibration loading equipment is dispersedly arranged, the device is complex, the number of unstable factors is large, the sample is easily damaged, the error of a calibration numerical value is large, and the increasing test tasks cannot be met.
The existing crankshaft bending fatigue test clamp has the following problems: firstly, the clamping is inconvenient with the dismantlement, and two, joint department adopt threaded connection mostly, receive the shearing force influence easily and cause the screw thread fracture, lead to anchor clamps to damage, and three, power transmission are unstable, lead to the data of detection to have the error.
Disclosure of Invention
Objects of the invention
The purpose of the invention is: the utility model provides a bent axle bending fatigue test anchor clamps of connecting omnipotent fatigue machine solves the problem that proposes among the above-mentioned background art.
(II) technical scheme
In order to solve the technical problems, the invention provides a crankshaft bending fatigue test fixture capable of being connected with a universal fatigue machine, which comprises a fixture base 1, wherein the upper surface of the fixture base 1 is fixedly connected with slide rails 2, a support table 3 is arranged between the slide rails 2, a first clamping block 4 is slidably connected inside the slide rails 2, one side of the support table 3 is fixedly connected with a fixed seat 11, the surface of the fixed seat 11 is fixedly connected with a hydraulic cylinder 12, one end of the hydraulic cylinder 12 is fixedly connected with one side of the first clamping block 4, the upper part of the outer side wall of the first clamping block 4 is provided with a chute, the lower part of the outer side wall of the first clamping block 4 is fixedly connected with a rack 13, one side of the first clamping block 4 is fixedly connected with a bending load inductor 14, one side of the upper surface of the fixture base 1 is fixedly connected with a limit column 5, the inner side wall of, the pulley 16 is arranged inside the sliding groove of the first clamping block 4, the rotating seat 17 is arranged below the sliding wheel frame 15, a rotating shaft is inserted inside the rotating seat 17, one end of the rotating shaft is sleeved with a gear 18, the gear 18 is meshed with the rack 13, one side of the clamp base 1 is fixedly connected with a rotating frame 6, a rotating shaft 7 is inserted inside the rotating frame 6, the outer surface of the rotating shaft 7 is fixedly connected with a second clamping block 8, one side of the second clamping block 8 is provided with a mounting hole, the inside of the mounting hole is inserted with a connecting sleeve 9, one end of the crankshaft 10 is inserted inside the connecting sleeve 9, the outer surface of the connecting sleeve 9 is fixedly connected with a through hole, one side of the second clamping block 8 is provided with a mounting hole, the inside of the mounting hole is inserted with a fixing pin 23, the inside of the fixing pin 23 is provided with a magnetorheological fluid device, the magnetorheological fluid device is composed of a magnetorheological fluid rubber ring 24 and, outer fixed surface of kicking block 26 is connected with the boss, the recess has been seted up to connecting sleeve 9's inside, the boss of kicking block 26 is pegged graft in the inside of connecting sleeve 9 recess, the other end of bent axle 10 is pegged graft in the inside of first clamp splice 4, the one end transmission of axis of rotation 7 is connected with power unit, power unit is by motor 19, little sprocket 20, transmission chain 21 and big sprocket 22 are constituteed, big sprocket 22's hole is connected with the one end transmission of axis of rotation 7, motor 19's bottom and anchor clamps base 1's last fixed surface are connected, the output at motor 19 is installed to little sprocket 20, little sprocket 20 is connected with big sprocket 22 transmission through transmission chain 21.
(III) advantageous effects
The crankshaft bending fatigue test clamp for connecting the universal fatigue machine, provided by the technical scheme, has the following beneficial effects:
(1) this can connect universal fatigue machine's bent axle bending fatigue test anchor clamps, through the pneumatic cylinder, the pulley, rack and pinion's setting, it removes to drive first clamp splice through the pneumatic cylinder when using, setting through rack and pinion and pulley and spout, make the removal that first clamp splice can be steady, make the inside of inserting at first clamp splice of the one end of bent axle, accomplish fixed mounting, what make this can connect universal fatigue machine's bent axle bending fatigue test anchor clamps possessed can steady movement and bent axle simple to operate effect, through the transmission chain, the cooperation setting of little sprocket and big sprocket, the in-process that uses can realize the stable rotation of second clamp splice through chain drive's mode, thereby played the effect that makes bending torque can steadily slowly increase, reached the purpose that improves the precision of test data.
(2) This can connect bent axle bending fatigue test anchor clamps of omnipotent fatigue machine, through magnetorheological suspensions device's setting, make connecting sleeve and second clamp splice press from both sides tightly fixedly through magnetorheological suspensions when using, make this can connect bent axle bending fatigue test anchor clamps of omnipotent fatigue machine possess the paradigm that need not use threaded connection and fix, solved the effect that the screw thread receives the cracked problem of two shearing forces, reached the purpose that improves the life of this anchor clamps.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic side view of the present invention;
3 FIG. 3 3 3 is 3 a 3 schematic 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 1 3 in 3 accordance 3 with 3 the 3 present 3 invention 3; 3
FIG. 4 is a schematic cross-sectional view of portion A of FIG. 1 according to the present invention;
fig. 5 is a schematic three-dimensional structure diagram of the limiting column and the first clamping block of the invention.
In the figure: 1. a clamp base; 2. a slide rail; 3. a support table; 4. a first clamping block; 5. a limiting column; 6. a rotating frame; 7. a rotating shaft; 8. a second clamp block; 9. a connecting sleeve; 10. a crankshaft; 11. a fixed seat; 12. a hydraulic cylinder; 13. a rack; 14. a bending load sensor; 15. a sliding wheel carrier; 16. a pulley; 17. a rotating seat; 18. a gear; 19. an electric motor; 20. a small sprocket; 21. a transmission chain; 22. a large sprocket; 23. a fixing pin; 24. magnetorheological fluid rubber rings; 25. an electromagnet; 26. and (7) a top block.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
Referring to fig. 1 to 5, the crankshaft bending fatigue test fixture capable of connecting a universal fatigue machine of the invention comprises a fixture base 1, a slide rail 2 is fixedly connected to the upper surface of the fixture base 1, a support table 3 is arranged between the slide rails 2, a first clamping block 4 is slidably connected to the interior of the slide rail 2, a fixed seat 11 is fixedly connected to one side of the support table 3, a hydraulic cylinder 12 is fixedly connected to the surface of the fixed seat 11, one end of the hydraulic cylinder 12 is fixedly connected to one side of the first clamping block 4, a chute is arranged at the upper part of the outer side wall of the first clamping block 4, a rack 13 is fixedly connected to the lower part of the outer side wall of the first clamping block 4, a bending load sensor 14 is fixedly connected to one side of the upper surface of the fixture base 1, a limit column 5 is fixedly connected to one side of the inner side wall of the limit column 5, the pulley 16 is arranged inside the sliding groove of the first clamping block 4, the rotating seat 17 is arranged below the sliding wheel frame 15, a rotating shaft is inserted inside the rotating seat 17, one end of the rotating shaft is sleeved with a gear 18, the gear 18 is meshed with the rack 13, one side of the clamp base 1 is fixedly connected with a rotating frame 6, a rotating shaft 7 is inserted inside the rotating frame 6, the outer surface of the rotating shaft 7 is fixedly connected with a second clamping block 8, one side of the second clamping block 8 is provided with a mounting hole, the inside of the mounting hole is inserted with a connecting sleeve 9, one end of the crankshaft 10 is inserted inside the connecting sleeve 9, the outer surface of the connecting sleeve 9 is fixedly connected with a through hole, one side of the second clamping block 8 is provided with a mounting hole, the inside of the mounting hole is inserted with a fixing pin 23, the inside of the fixing pin 23 is provided with a magnetorheological fluid device, the magnetorheological fluid device is composed of a magnetorheological fluid rubber ring 24 and, outer fixed surface of kicking block 26 is connected with the boss, the recess has been seted up to connecting sleeve 9's inside, the boss of kicking block 26 is pegged graft in the inside of connecting sleeve 9 recess, the other end of bent axle 10 is pegged graft in the inside of first clamp splice 4, the one end transmission of axis of rotation 7 is connected with power unit, power unit is by motor 19, little sprocket 20, transmission chain 21 and big sprocket 22 are constituteed, big sprocket 22's hole is connected with the one end transmission of axis of rotation 7, motor 19's bottom and anchor clamps base 1's last fixed surface are connected, the output at motor 19 is installed to little sprocket 20, little sprocket 20 is connected with big sprocket 22 transmission through transmission chain 21.
When the magnetorheological fluid fixing device is used, the connecting sleeve 9 is inserted into one side of the second clamping block 8, when the fixing pin 23 is inserted into one side of the connecting sleeve 9, an external power supply is started, the electromagnet 25 is electrified and is magnetized, magnetorheological fluid in the magnetorheological fluid rubber ring 24 is changed from liquid to solid, the diameter of one end of the fixing pin 23 is reduced, the fixing pin 23 is inserted into the second clamping block 8, the power supply is disconnected, the magnetorheological fluid is changed into liquid, the volume of the fixing pin 23 is increased, the connecting sleeve 9 and the second clamping block 8 are fixed, the crankshaft 10 is inserted into the connecting sleeve 9, the hydraulic cylinder 12 is started, the first clamping block 4 is stably moved under the transmission of the sliding groove of the pulley 16 and the rack 13 of the gear 18, the first clamping block 4 and the other end of the crankshaft 10 are fixed, the motor 19 is started, the motor 19 drives the small chain wheel 20 to rotate, and the small chain wheel 20 drives the large chain wheel 22 to rotate, finally, the second clamping block 8 is driven to rotate, bending load is applied to the crankshaft 10, data are transmitted to the terminal through the bending load sensor 14, and test detection is completed.
The working principle of the invention is as follows: the crankshaft bending fatigue test fixture capable of being connected with the universal fatigue machine drives the first clamping block 4 to move through the hydraulic cylinder 12 through the arrangement of the hydraulic cylinder 12, the pulley 16 and the gear 18 rack 13 when in use, enables the first clamping block 4 to stably move through the arrangement of the gear 18 rack 13, the pulley 16 and the sliding groove, enables one end of the crankshaft 10 to be inserted into the first clamping block 4 to complete fixed installation, enables the crankshaft bending fatigue test fixture capable of being connected with the universal fatigue machine to have the effects of stable movement and convenient installation of the crankshaft 10, realizes stable rotation of the second clamping block 8 through a chain transmission mode in the use process through the matching arrangement of the transmission chain 21, the small chain wheel 20 and the large chain wheel 22, thereby playing the role of enabling the bending torque to be stably and slowly increased, achieving the purpose of improving the accuracy of test data, and through the arrangement of the magnetorheological fluid device, when the connecting clamp is used, the connecting sleeve 9 and the second clamping block 8 are clamped and fixed through magnetorheological fluid, so that the crankshaft bending fatigue test clamp capable of being connected with the universal fatigue machine has a paradigm that threaded connection is not needed for fixing, the effect that the threads are broken by the shearing force II is solved, and the purpose of prolonging the service life of the clamp is achieved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a can connect bent axle bending fatigue test anchor clamps of omnipotent fatigue machine which characterized in that, includes anchor clamps base (1), its characterized in that: the upper surface of the clamp base (1) is fixedly connected with slide rails (2), a support table (3) is arranged between the slide rails (2), a first clamping block (4) is connected inside the sliding rail (2) in a sliding manner, a limiting column (5) is fixedly connected with one side of the upper surface of the clamp base (1), one side of the clamp base (1) is fixedly connected with a rotating frame (6), a rotating shaft (7) is inserted in the rotating frame (6), the outer surface of the rotating shaft (7) is fixedly connected with a second clamping block (8), one side of the second clamping block (8) is provided with a mounting hole, a connecting sleeve (9) is inserted in the mounting hole, one end of a crankshaft (10) is inserted in the connecting sleeve (9), the other end of the crankshaft (10) is inserted in the first clamping block (4), and one end of the rotating shaft (7) is in transmission connection with a power mechanism.
2. The crankshaft bending fatigue test fixture capable of being connected with the universal fatigue machine as claimed in claim 1, wherein a fixed seat (11) is fixedly connected to one side of the support platform (3), a hydraulic cylinder (12) is fixedly connected to the surface of the fixed seat (11), and one end of the hydraulic cylinder (12) is fixedly connected with one side of the first clamping block (4).
3. The crankshaft bending fatigue test fixture capable of being connected with the universal fatigue machine as claimed in claim 2, wherein: the upper portion of the outer side wall of the first clamping block (4) is provided with a sliding groove, and the lower portion of the outer side wall of the first clamping block (4) is fixedly connected with a rack (13).
4. The crankshaft bending fatigue test fixture capable of being connected with the universal fatigue machine as claimed in claim 3, wherein: and one side of the first clamping block (4) is fixedly connected with a bending load sensor (14).
5. The crankshaft bending fatigue test fixture capable of being connected with the universal fatigue machine as claimed in claim 4, wherein: the inner side wall of the limiting column (5) is fixedly connected with a sliding wheel carrier (15), a pulley (16) is rotatably connected inside the sliding wheel carrier (15), and the pulley (16) is arranged inside a sliding groove of the first clamping block (4).
6. The crankshaft bending fatigue test fixture capable of being connected with the universal fatigue machine as claimed in claim 5, wherein: a rotating seat (17) is arranged below the sliding wheel carrier (15), a rotating shaft is inserted into the rotating seat (17), a gear (18) is sleeved at one end of the rotating shaft, and the gear (18) is meshed with the rack (13).
7. The crankshaft bending fatigue test fixture capable of being connected with the universal fatigue machine as claimed in claim 6, wherein: the power mechanism comprises a motor (19), a small chain wheel (20), a transmission chain (21) and a large chain wheel (22), an inner hole of the large chain wheel (22) is in transmission connection with one end of a rotating shaft (7), the bottom of the motor (19) is fixedly connected with the upper surface of the clamp base (1), the small chain wheel (20) is installed at the output end of the motor (19), and the small chain wheel (20) is in transmission connection with the large chain wheel (22) through the transmission chain (21).
8. The crankshaft bending fatigue test fixture capable of being connected with the universal fatigue machine as claimed in claim 7, wherein: the magnetorheological fluid device is characterized in that a through hole is formed in an annular flange ring on the outer end face of the connecting sleeve (9), a mounting hole is formed in one side of the second clamping block (8), the through hole and the mounting hole are coaxial, a fixing pin (23) is inserted inside the through hole, a magnetorheological fluid device is arranged inside the fixing pin (23), and the magnetorheological fluid device comprises a magnetorheological fluid rubber ring (24) and an inner electromagnet (25).
9. The crankshaft bending fatigue test fixture capable of being connected with the universal fatigue machine as claimed in claim 8, wherein: the inner end face of the connecting sleeve (9) is abutted to the top block (26), a boss is arranged on the outer surface of the top block (26), a groove is formed in the inner end face of the connecting sleeve (9), and the boss of the top block (26) is inserted into the groove of the connecting sleeve (9).
10. Use of the crankshaft bending fatigue test fixture connectable to a universal fatigue machine according to any one of claims 1 to 9 in the technical field of crankshaft bending fatigue tests.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011585485.7A CN112683703A (en) | 2020-12-28 | 2020-12-28 | Crankshaft bending fatigue test fixture capable of being connected with universal fatigue machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011585485.7A CN112683703A (en) | 2020-12-28 | 2020-12-28 | Crankshaft bending fatigue test fixture capable of being connected with universal fatigue machine |
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| Publication Number | Publication Date |
|---|---|
| CN112683703A true CN112683703A (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011585485.7A Pending CN112683703A (en) | 2020-12-28 | 2020-12-28 | Crankshaft bending fatigue test fixture capable of being connected with universal fatigue machine |
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| CN (1) | CN112683703A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN116296925A (en) * | 2023-03-02 | 2023-06-23 | 无锡市恒鼎智能装备科技有限公司 | Metal fatigue life prediction equipment and use method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1922334A (en) * | 2004-02-23 | 2007-02-28 | 阿尔芬·凯斯勒机械制造有限责任公司 | Method and device for increasing the endurance limit, in particular the bending strength and torsional strength of crankshafts |
| CN104359670A (en) * | 2014-12-01 | 2015-02-18 | 天润曲轴股份有限公司 | Static load calibration device for bending fatigue test of crankshaft |
| CN109590776A (en) * | 2018-12-12 | 2019-04-09 | 成都飞机工业（集团）有限责任公司 | A kind of flexible fixture and clamping method based on magnetorheological fluid |
| JP2020046405A (en) * | 2018-09-21 | 2020-03-26 | いすゞ自動車株式会社 | Fatigue test device of crank shaft |
| CN211439710U (en) * | 2019-12-13 | 2020-09-08 | 嘉兴市立丰机械制造有限公司 | Axial positioning device for crankshaft installation |
-
2020
- 2020-12-28 CN CN202011585485.7A patent/CN112683703A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1922334A (en) * | 2004-02-23 | 2007-02-28 | 阿尔芬·凯斯勒机械制造有限责任公司 | Method and device for increasing the endurance limit, in particular the bending strength and torsional strength of crankshafts |
| CN104359670A (en) * | 2014-12-01 | 2015-02-18 | 天润曲轴股份有限公司 | Static load calibration device for bending fatigue test of crankshaft |
| JP2020046405A (en) * | 2018-09-21 | 2020-03-26 | いすゞ自動車株式会社 | Fatigue test device of crank shaft |
| CN109590776A (en) * | 2018-12-12 | 2019-04-09 | 成都飞机工业（集团）有限责任公司 | A kind of flexible fixture and clamping method based on magnetorheological fluid |
| CN211439710U (en) * | 2019-12-13 | 2020-09-08 | 嘉兴市立丰机械制造有限公司 | Axial positioning device for crankshaft installation |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN116296925A (en) * | 2023-03-02 | 2023-06-23 | 无锡市恒鼎智能装备科技有限公司 | Metal fatigue life prediction equipment and use method |
| CN116296925B (en) * | 2023-03-02 | 2024-01-12 | 无锡市恒鼎智能装备科技有限公司 | Metal fatigue life prediction equipment and use method |
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