CN201555758U - Three-point fretting testing assistive device - Google Patents
Three-point fretting testing assistive device Download PDFInfo
- Publication number
- CN201555758U CN201555758U CN2009202779749U CN200920277974U CN201555758U CN 201555758 U CN201555758 U CN 201555758U CN 2009202779749 U CN2009202779749 U CN 2009202779749U CN 200920277974 U CN200920277974 U CN 200920277974U CN 201555758 U CN201555758 U CN 201555758U
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- CN
- China
- Prior art keywords
- point
- placket
- charger
- fretting
- back tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a three-point fretting testing assistive device, which comprises loading devices (100) and a seat (200). The three loading devices (100) are fixed on the seat (200) via fixing bolts (4) and nuts (5); connection between the loading devices (100) and the seat (200) is an adjusting type structure; and two slot holes (7) are arranged in parallel on the seat (200), the fixing bolts (4) penetrate through the slot holes (7), and distances among the loading devices (100) H can be adjusted by adjusting positions of the fixing bolts (4). The three-point fretting testing assistive device is installed on a fatigue testing device for use, two three-point fretting testing assistive devices load a tested element symmetrically, and the fatigue testing device applies cyclic loading at two ends of the tested element. The three-point fretting assistive device can perform multi-point fretting testing with adjustable distances between contact points, and has simple structure and convenient utilization.
Description
Technical field
The utility model relates to a kind of 3 fine motions experiment servicing unit, is applicable to fatigue strength experiment field.
Background technology
Fine motion is two fixing surface mutual extrusion and produce the reciprocal relative motion of micron order under the normal pressure effect that are in contact with one another.In fields such as aviation, railway and machinery, can cause the parts fault, even the disaster accident occur because of fretting fatigue loses efficacy.A bit contact of fine motion contact, line contact contact three types with face.Because the stress difference during multiple spot contact fine motion between the each point, multiple spot contact fine motion experimental design has its necessity, but does not still have multiple spot fine motion experimental provision at present.
The utility model content
In order to carry out multiple spot contact fine motion experiment, the utility model provides a kind of 3 fine motions experiment servicing unit, and this device is installed on the fatigue tester and uses, and can carry out 3 fine motion experiments, and the distance between the contact point can be regulated.
The technical scheme that its technical matters that solves the utility model adopts is: 3 fine motion experiment servicing units comprise charger and base, and three chargers are fixed on the base by screw bolt and nut; Connection between charger and the base is the adjustable type structure: establish two slotted holes on the base side by side, bolt passes slotted hole, by the distance between whole each charger of the adjustable positions of adjusting bolt.
Charger comprises back tube, placket, pedestal, spring and loading head; Placket is fixed on the pedestal by screw bolt and nut, and back tube and placket link by screw thread, and spring and loading head are installed in the inside of back tube and placket, and spring one end withstands the back tube, and the other end withstands loading head, and loading head connects with the through hole on the pedestal is movable.And the back tube indicates the circumferencial direction scale, and placket indicates horizontal scale.
Charger is by rotation back tube compression spring imposed load, and the charger similar is in milscale, and magnitude of load can directly be read by the scale on back tube and the placket.3 fine motion experiment servicing units link by bolt and fatigue tester.
The beneficial effects of the utility model are, can carry out 3 fine motions experiments, and distance can be regulated between the contact point, and apparatus structure is simple, and is easy to use.
Description of drawings
Fig. 1 is 3 fine motion experiment servicing unit front views.
Fig. 2 is 3 fine motion experiment servicing unit vertical views.
Fig. 3 is the charger structural map.
Fig. 4 is the load mode synoptic diagram.
Among the above-mentioned figure: 100-charger, 200-base, tube behind the 1-, 2-placket, 3-pedestal, 4-set bolt, the 5-nut, 6-loading head, 7-slotted hole, 8-bolt hole, 9-screw thread, 10-spring, the 11-bolt, 12-nut, 13-through hole, 14-test specimen, the distance between the H-charger, M-fatigue tester.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
3 fine motions experiment servicing units, as at Fig. 1 and Fig. 2, it comprises: charger 100 and base 200.Three chargers 100 are fixed on the base 200 by set bolt 4 and nut 5, establish two slotted holes 7 on the base 200 side by side, and set bolt 4 passes slotted hole 7, by the distance H between whole each charger 100 of the adjustable positions of adjusting set bolt 4.Establish four bolts hole 8 on the base 200, be used for the connection of 3 fine motion experiment servicing units and fatigue tester.
In Fig. 4,3 fine motion experiment servicing units are installed on the fatigue tester M by bolt, and two 3 fine motions experiment servicing units carry out symmetry to test specimen 14 and load, and fatigue tester M applies cyclic loading to test specimen 14 two ends.
Claims (3)
1. servicing unit is tested in 3 fine motions, and it is characterized in that: comprise charger (100) and base (200), three chargers (100) are fixed on the base (200) by set bolt (4) and nut (5); Connection between charger (100) and the base (200) is the adjustable type structure: establish two slotted holes (7) on the base (200) side by side, set bolt (4) passes slotted hole (7), adjusts distance (H) between each charger (100) by the position of adjusting set bolt (4).
2. 3 fine motions experiment servicing unit according to claim 1 is characterized in that: charger (100) comprises back tube (1), placket (2), pedestal (3), spring (10) and loading head (6); Placket (2) is fixed on the pedestal (3) by bolt (11) and nut (12), back tube (1) and placket (2) link by screw thread (9), spring (10) and loading head (6) are installed in the inside of back tube (1) and placket (2), spring (10) one ends withstand back tube (1), the other end withstands loading head (6), and loading head (6) connects by through hole (13) and pedestal (3) are movable.
3. 3 fine motions experiment servicing unit according to claim 2, it is characterized in that: back tube (1) indicates the circumferencial direction scale, and placket (2) indicates horizontal scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202779749U CN201555758U (en) | 2009-12-17 | 2009-12-17 | Three-point fretting testing assistive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202779749U CN201555758U (en) | 2009-12-17 | 2009-12-17 | Three-point fretting testing assistive device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201555758U true CN201555758U (en) | 2010-08-18 |
Family
ID=42615446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202779749U Expired - Fee Related CN201555758U (en) | 2009-12-17 | 2009-12-17 | Three-point fretting testing assistive device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201555758U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879264A (en) * | 2012-10-30 | 2013-01-16 | 哈尔滨工业大学 | Clamp for testing interlaminar shear properties of pavement structure |
-
2009
- 2009-12-17 CN CN2009202779749U patent/CN201555758U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879264A (en) * | 2012-10-30 | 2013-01-16 | 哈尔滨工业大学 | Clamp for testing interlaminar shear properties of pavement structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20121217 |