CN103954498A - Clamping device for bent axle fatigue test - Google Patents
Clamping device for bent axle fatigue test Download PDFInfo
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- CN103954498A CN103954498A CN201410220888.XA CN201410220888A CN103954498A CN 103954498 A CN103954498 A CN 103954498A CN 201410220888 A CN201410220888 A CN 201410220888A CN 103954498 A CN103954498 A CN 103954498A
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- sleeve
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- inner sleeve
- conical
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Abstract
The invention relates to a clamping device for a bent axle fatigue test. The clamping device comprises an inner sleeve, an outer sleeve, a compaction sleeve and a vibrating plate, wherein a main journal of a bend axle is arranged in the inner sleeve, the outer sleeve is located in a through hole of the vibrating plate, two conical surfaces which bulge towards the middle are respectively arranged on the outer surface of the inner sleeve and the inner surface of the outer sleeve, two conical surfaces corresponding to the conical surfaces of the inner sleeve and the outer sleeve are correspondingly arranged on the compaction sleeve, the compaction sleeve is symmetrically arranged between the inner sleeve and the outer sleeve from two sides, a connecting bolt is arranged in the middle of the compaction sleeve, the two compaction sleeves move towards the middle through tensioning the connecting bolt on the compaction sleeve so as to extrude the inner sleeve to compact the main journal of the bent axle, the outer sleeve compacts the pore wall of the vibrating plate, and thus the purpose of firmly clamping a bent axle sample on the vibrating plate is realized. The clamping device is reasonable in structure, large in firmness of clamping the sample, and easy to dismantle, and is an ideal clamping device for the bent axle fatigue test.
Description
Technical field
The present invention relates to a kind of crankshaft strength test unit, specifically a kind of crankshaft fatigue test clamping device.
Background technology
The torture test of bent axle all adopts special fixtures that test bent axle or crank throw are clamped, then by vibrator or eccentric wheel to fixture imposed load repeatedly a bit, the fatigue strength of check bent axle.Expansion sleeve is a kind of keyless joint device, and it makes to produce normal pressure between expansion set and axle or cover female surface by tightening high-strength bolt, produces together friction force, realizes a kind of keyless joint that load transmits.Expansion set connection mainly contains following advantage: without high-precision manufacturing tolerance; Intensity is high, and connective stability is reliable; Be easy to installing/dismounting; There is good interchangeability.
At present, domestic crankshaft fatigue test clamping mode all adopt single in the mode of external conical sleeve swelling step up sample, this installation way is difficult for stepping up to large load test, and the threaded hole on external conical sleeve adds larger axial force and easily damage because often bearing, utilization factor is low.Crankshaft fatigue test often cannot not carried out because specimen clamping does not tightly cause test.
Summary of the invention
Technical matters to be solved by this invention is the deficiency that overcomes above-mentioned test fixture device, provides a kind of simple and reasonable for structure, easy to operate, and clamping is fastening, reliable operation, the crankshaft fatigue test clamping device that efficiency is high.
The technical scheme that the present invention solves the problems of the technologies described above employing is: a kind of crankshaft fatigue test clamping device, it includes inner sleeve, overcoat, clamping sleeve, vibration plate, the king journal of bent axle is contained in inner sleeve, overcoat is positioned at the through hole of vibration plate, it is characterized in that: described lining the outer surface of and overcoat inside surface are respectively equipped with two to the conical surface of median rise, on described clamping sleeve, be correspondingly provided with the Double-conical-surface with inner sleeve and overcoat conical surface corresponding matching, two clamping sleeves are arranged between inner sleeve and overcoat from symmetria bilateralis, in the middle of two clamping sleeves, be provided with coupling bolt, by the coupling bolt on tension clamping sleeve, two clamping sleeves move to centre, extruding inner sleeve compresses main bearing journal, overcoat compresses the hole wall of vibration plate, realize the firm grip of bent axle sample on vibration plate.
Inner sleeve of the present invention is axially arranged with an opening groove, and the conical degree of conical surface of lining the outer surface of is consistent with the conical degree of conical surface that clamping sleeve inner side is provided with, the two tight fit connection.Inner sleeve internal diameter is consistent with bent axle sample king journal diameter.
Overcoat of the present invention is axially arranged with an opening groove, and the conical degree of conical surface of overcoat inside surface is consistent with the conical degree of conical surface that clamping sleeve outside is provided with, the two tight fit connection.The diameter of overcoat is consistent with the diameter of the through hole of vibration plate.
On compression jacket wall of the present invention, be axially arranged with through hole and threaded hole, circumferentially sealing.
When the present invention uses, test crankshaft two end king journal is respectively charged in two inner sleeves.Two inner sleeves on main bearing journal are respectively charged in two overcoats, have Double-conical-surface clamping sleeve to connect between jacket and inner sleeve.Crank throw and a whole set of inner-outer sleeve are put into the through hole of vibration plate, by the coupling bolt on tension clamping sleeve, make inner sleeve compress main bearing journal, overcoat compresses the hole wall of vibration plate, like this, the coupling bolt of tightening on clamping sleeve can firmly be clamped in sample bent axle on vibration plate.Against existing technologies, the same snap-in force of the present invention can produce larger radial pressure, transmits larger load, can guarantee the tautness of crankshaft fatigue test sample, and is easy to dismounting, is not easy damaged screw hole, improves fixture utilization factor.It is simple and reasonable for structure, easy to operate, and clamping is fastening, reliable operation, the crankshaft fatigue test clamping device that efficiency is high.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is that the present invention forms structural representation.
Fig. 2 is the structural representation of overcoat in the present invention.
Fig. 3 is that the A-A of Fig. 2 is to schematic diagram.
Fig. 4 is the structural representation of inner sleeve in the present invention.
Fig. 5 is that the B-B of Fig. 4 is to schematic diagram.
Fig. 6 is the structural representation of clamping sleeve in the present invention.
Fig. 7 is that the C-C of Fig. 6 is to schematic diagram.
Label in figure is: 1. vibration plate, 2. overcoat, 3. coupling bolt, 4. clamping sleeve, 5. inner sleeve, 6. king journal.
Embodiment
As can be seen from Figure 1, a kind of crankshaft fatigue test clamping device, it includes inner sleeve 5, overcoat 2, clamping sleeve 4, vibration plate 1, and the king journal 6 of bent axle is contained in inner sleeve 5, and overcoat 2 is positioned at the through hole of vibration plate 1.
Described inner sleeve 5 outside surfaces and overcoat 2 inside surfaces are respectively equipped with two to the conical surface of median rise, and two conical surfaces of lining the outer surface of are symmetrical arranged, and form Double-conical-surface inner sleeve; Two conical surfaces of overcoat inside surface are symmetrical arranged, and form Double-conical-surface overcoat.On described clamping sleeve 4 medial surfaces and lateral surface, be correspondingly provided with the conical surface with inner sleeve and overcoat conical surface corresponding matching, clamping sleeve 4 is Double-conical-surface clamping sleeve, two clamping sleeves 4 are arranged between inner sleeve 5 and overcoat 2 from symmetria bilateralis, in the middle of two clamping sleeves, be provided with coupling bolt 3, by 3, two clamping sleeves 4 of coupling bolt on tension clamping sleeve 4, to centre, move, extruding inner sleeve 5 compresses main bearing journal 6, overcoat 2 compresses the hole wall of vibration plate 1, realizes the firm grip of bent axle sample on vibration plate.
Inner sleeve 5 of the present invention is axially arranged with an opening groove, and the conical degree of conical surface of inner sleeve 5 outside surfaces is consistent with the conical degree of conical surface of clamping sleeve 4 medial surfaces, the two tight fit connection.Inner sleeve 5 internal diameters are consistent with bent axle sample king journal 6 diameters.As shown in Figure 1, Figure 4, Figure 5.
Overcoat 2 of the present invention is axially arranged with an opening groove, and the conical degree of conical surface of overcoat 2 inside surfaces is consistent with the conical degree of conical surface of clamping sleeve 4 lateral surfaces, the two tight fit connection.The diameter of overcoat is consistent with the diameter of the through hole of vibration plate.As shown in Figure 1, Figure 2, Figure 3 shows.
On clamping sleeve 4 walls of the present invention, be axially arranged with through hole and threaded hole, circumferentially sealing, imperforation groove.As shown in Figure 6, Figure 7.
The present invention is by screwing two clamping sleeves 4 of coupling bolt 3 tensions, and during clamping sleeve tension, overcoat 2 distendings and vibration plate 1 firmly connect as one, inner sleeve 5 effect of the being squeezed king journal 6 of embracing test bent axle tightly.Like this, bent axle sample, inner sleeve, clamping sleeve, overcoat and vibration plate firmly connect as one.
When the present invention assembles, with instrument, the opening groove in inner sleeve 5 is strutted gently, then the two ends king journal 6 of test bent axle is respectively charged in two inner sleeves 5.The inner sleeve that installs main bearing journal is respectively charged in two overcoats 2, and bipyramid clamping sleeve 4 is assemblied between overcoat 2 and inner sleeve 5 from both sides.Crank throw and a whole set of inner sleeve, overcoat are put into the hole of vibration plate 1, by the coupling bolt 3 on tension clamping sleeve 4, made inner sleeve 5 compress main bearing journals, overcoat 2 compresses the hole wall of vibration plates, tightens coupling bolt 3, sample bent axle firmly can be clamped on vibration plate 1.The test bent axle having clamped can carry out torture test by pilot system.Can guarantee the tautness of crankshaft fatigue test sample, and be easy to dismounting, be not easy damaged screw hole, improve fixture utilization factor.It is simple and reasonable for structure, easy to operate, and clamping is fastening, reliable operation, the crankshaft fatigue test clamping device that efficiency is high.
Claims (4)
1. a crankshaft fatigue is tested clamping device, it includes inner sleeve, overcoat, clamping sleeve, vibration plate, the king journal of bent axle is contained in inner sleeve, overcoat is positioned at the through hole of vibration plate, it is characterized in that: described lining the outer surface of and overcoat inside surface are respectively equipped with two to the conical surface of median rise, on described clamping sleeve, be correspondingly provided with the Double-conical-surface with inner sleeve and overcoat conical surface corresponding matching, two clamping sleeves are arranged between inner sleeve and overcoat from symmetria bilateralis, in the middle of two clamping sleeves, be provided with coupling bolt, by the coupling bolt on tension clamping sleeve, two clamping sleeves move to centre, extruding inner sleeve compresses main bearing journal, overcoat compresses the hole wall of vibration plate, realize the firm grip of bent axle sample on vibration plate.
2. crankshaft fatigue test clamping device according to claim 1, is characterized in that: described inner sleeve is axially arranged with an opening groove, and the conical degree of conical surface of lining the outer surface of is consistent with the conical degree of conical surface that clamping sleeve inner side is provided with, the two tight fit connection.
3. crankshaft fatigue test clamping device according to claim 1, is characterized in that: described overcoat is axially arranged with an opening groove, and the conical degree of conical surface of overcoat inside surface is consistent with the conical degree of conical surface that clamping sleeve outside is provided with, the two tight fit connection.
4. crankshaft fatigue test clamping device according to claim 1, is characterized in that: on described compression jacket wall, be axially arranged with through hole and threaded hole, circumferentially sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410220888.XA CN103954498B (en) | 2014-05-23 | 2014-05-23 | Crankshaft fatigue test clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410220888.XA CN103954498B (en) | 2014-05-23 | 2014-05-23 | Crankshaft fatigue test clamping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103954498A true CN103954498A (en) | 2014-07-30 |
| CN103954498B CN103954498B (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410220888.XA Active CN103954498B (en) | 2014-05-23 | 2014-05-23 | Crankshaft fatigue test clamping device |
Country Status (1)
| Country | Link |
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| CN (1) | CN103954498B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372067A (en) * | 2015-12-28 | 2016-03-02 | 中北大学 | Torsional fatigue test device for crankshaft |
| CN105372066A (en) * | 2015-12-28 | 2016-03-02 | 中北大学 | Overall torsional fatigue tester for crankshaft |
| CN106290022A (en) * | 2016-09-19 | 2017-01-04 | 上海海洋大学 | One has undercut nature section bar testing method of endurance performance |
| CN113588460A (en) * | 2021-07-27 | 2021-11-02 | 中南大学 | High-temperature triaxial SHPB device for rock and assembling method and testing method thereof |
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| RU2097735C1 (en) * | 1995-07-25 | 1997-11-27 | Алтайский государственный технический университет им.И.И.Ползунова | Specimen for determination of strength when stretching the magnetized dispersed materials |
| CN201364312Y (en) * | 2009-03-18 | 2009-12-16 | 福州灵点光学仪器有限公司 | Locking mechanism of endoscope shaping pipe |
| CN101672717A (en) * | 2009-08-28 | 2010-03-17 | 无锡海源重工股份有限公司 | Water pressure inner expansion plug device |
| CN102156067A (en) * | 2011-03-01 | 2011-08-17 | 中国石油集团工程设计有限责任公司 | Clamping device used in tensile test |
| 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 |
| CN103278403A (en) * | 2013-05-09 | 2013-09-04 | 江苏恒神纤维材料有限公司 | Composite core rod torsion tester |
| CN203838011U (en) * | 2014-05-23 | 2014-09-17 | 天润曲轴股份有限公司 | Crankshaft fatigue test clamping device |
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2014
- 2014-05-23 CN CN201410220888.XA patent/CN103954498B/en active Active
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| RU2097735C1 (en) * | 1995-07-25 | 1997-11-27 | Алтайский государственный технический университет им.И.И.Ползунова | Specimen for determination of strength when stretching the magnetized dispersed materials |
| CN201364312Y (en) * | 2009-03-18 | 2009-12-16 | 福州灵点光学仪器有限公司 | Locking mechanism of endoscope shaping pipe |
| CN101672717A (en) * | 2009-08-28 | 2010-03-17 | 无锡海源重工股份有限公司 | Water pressure inner expansion plug device |
| CN102156067A (en) * | 2011-03-01 | 2011-08-17 | 中国石油集团工程设计有限责任公司 | Clamping device used in tensile test |
| 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 |
| CN103278403A (en) * | 2013-05-09 | 2013-09-04 | 江苏恒神纤维材料有限公司 | Composite core rod torsion tester |
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| 冯美斌: "曲轴扭转疲劳试验方法评述", 《车用发动机》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372067A (en) * | 2015-12-28 | 2016-03-02 | 中北大学 | Torsional fatigue test device for crankshaft |
| CN105372066A (en) * | 2015-12-28 | 2016-03-02 | 中北大学 | Overall torsional fatigue tester for crankshaft |
| CN105372067B (en) * | 2015-12-28 | 2016-08-17 | 中北大学 | Crankshaft torsion fatigue experimental device |
| CN106290022A (en) * | 2016-09-19 | 2017-01-04 | 上海海洋大学 | One has undercut nature section bar testing method of endurance performance |
| CN113588460A (en) * | 2021-07-27 | 2021-11-02 | 中南大学 | High-temperature triaxial SHPB device for rock and assembling method and testing method thereof |
| CN113588460B (en) * | 2021-07-27 | 2022-09-16 | 中南大学 | High-temperature triaxial SHPB device for rock and assembling method and testing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103954498B (en) | 2016-05-18 |
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Address after: Tianrun road Wendeng District of Weihai City, Shandong Province, No. 264400 2-13 Patentee after: Tianrun Industrial Technology Co., Ltd Address before: Wendeng City, Weihai City, Shandong province 264400 Tianrun Road No. 2-13 Patentee before: TIANRUN CRANKSHAFT Co.,Ltd. |