CN103954498B - Crankshaft fatigue test clamping device - Google Patents
Crankshaft fatigue test clamping device Download PDFInfo
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- CN103954498B CN103954498B CN201410220888.XA CN201410220888A CN103954498B CN 103954498 B CN103954498 B CN 103954498B CN 201410220888 A CN201410220888 A CN 201410220888A CN 103954498 B CN103954498 B CN 103954498B
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- overcoat
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Abstract
The present invention relates to a kind of crankshaft fatigue test clamping device, it includes inner sleeve, overcoat, clamping sleeve, vibration plate, the trunnion of bent axle is contained in inner sleeve, overcoat is positioned at the through hole of vibration plate, described lining the outer surface of and overcoat inner surface are respectively equipped with two conical surfaces to median rise, on described clamping sleeve, be correspondingly provided with the Double-conical-surface corresponding with inner sleeve and the overcoat conical surface, clamping sleeve is arranged between inner sleeve and overcoat from bilateral symmetry, centre is provided with connecting bolt, by the connecting 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. the present invention is rational in infrastructure, and clamping sample tautness is large, and is easy to dismounting, is a kind of desirable crankshaft fatigue test fixture device.
Description
Technical field
The present invention relates to a kind of crankshaft strength experimental rig, specifically a kind of crankshaft fatigue test clamping device.
Background technology
The fatigue test of bent axle all adopts special fixtures that test bent axle or crank throw are clamped, then by vibrator or eccentric wheel to some imposed load repeatedly of fixture, the fatigue strength of inspection 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 frictional 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 screwed hole on external conical sleeve adds larger axial force and easily damage because often bearing, utilization rate is low. Crankshaft fatigue test often cannot be carried out because specimen clamping does not tightly cause test.
Summary of the invention
Technical problem 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 trunnion 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 inner surface are respectively equipped with two conical surfaces to 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 bilateral symmetry, in the middle of two clamping sleeves, be provided with connecting bolt, by the connecting 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 trunnion diameter.
Overcoat of the present invention is axially arranged with an opening groove, and the conical degree of conical surface of overcoat inner 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 screwed hole, circumferentially sealing.
When the present invention uses, test crankshaft two end trunnion 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 connecting bolt on tension clamping sleeve, make inner sleeve compress main bearing journal, overcoat compresses the hole wall of vibration plate, like this, the connecting bolt of tightening on clamping sleeve can firmly be clamped in sample bent axle on vibration plate. Against existing technologies, the same thrust of the present invention can produce larger radial pressure, transmits larger load, can ensure the tautness of crankshaft fatigue test sample, and is easy to dismounting, is not easy damaged screw hole, improves fixture utilization rate. 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.
Brief description of the drawings
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. connecting bolt, 4. clamping sleeve, 5. inner sleeve, 6. trunnion.
Detailed description of the invention
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 trunnion 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 outer surfaces and overcoat 2 inner surfaces are respectively equipped with two conical surfaces to 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 inner 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 bilateral symmetry, in the middle of two clamping sleeves, be provided with connecting bolt 3, move to centre by 3, two clamping sleeves 4 of connecting bolt on tension clamping sleeve 4, 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 outer 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 trunnion 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 inner 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 screwed hole, circumferentially sealing, imperforation groove. As shown in Figure 6, Figure 7.
The present invention strains two clamping sleeves 4 by screwing connecting bolt 3, and when clamping sleeve tension, overcoat 2 distendings and vibration plate 1 firmly connect as one, inner sleeve 5 effect of the being squeezed trunnion 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, the opening groove in inner sleeve 5 is strutted gently with instrument, then the two ends trunnion 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 connecting bolt 3 on tension clamping sleeve 4, made inner sleeve 5 compress main bearing journal, overcoat 2 compresses the hole wall of vibration plate, tightens connecting bolt 3, sample bent axle firmly can be clamped on vibration plate 1. The test bent axle having clamped can carry out fatigue test by pilot system. Can ensure the tautness of crankshaft fatigue test sample, and be easy to dismounting, be not easy damaged screw hole, improve fixture utilization rate. 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 (2)
1. a crankshaft fatigue test clamping device, it includes inner sleeve, overcoat, clamping sleeve, vibration plate, the trunnion 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 inner surface are respectively equipped with two conical surfaces to median rise, on described clamping sleeve, be correspondingly provided with the Double-conical-surface with inner sleeve and overcoat conical surface corresponding matching, described inner sleeve is axially arranged with an opening groove, 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; Described overcoat is axially arranged with an opening groove, and the conical degree of conical surface of overcoat inner surface is consistent with the conical degree of conical surface that clamping sleeve outside is provided with, the two tight fit connection; Two clamping sleeves are arranged between inner sleeve and overcoat from bilateral symmetry, in the middle of two clamping sleeves, be provided with connecting bolt, by the connecting 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, realizes the firm grip of bent axle sample on vibration plate.
2. 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 screwed 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 CN103954498A (en) | 2014-07-30 |
| CN103954498B true 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 |
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| CN (1) | CN103954498B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372066B (en) * | 2015-12-28 | 2016-12-07 | 中北大学 | A kind of torsion fatigue test of whole crank shaft method |
| 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 |
| 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 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101672717B (en) * | 2009-08-28 | 2011-03-02 | 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 |
| CN102288406B (en) * | 2011-07-08 | 2012-10-17 | 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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| CN103954498A (en) | 2014-07-30 |
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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. |