CN202091307U - Butt joint fastener - Google Patents
Butt joint fastener Download PDFInfo
- Publication number
- CN202091307U CN202091307U CN2011201917503U CN201120191750U CN202091307U CN 202091307 U CN202091307 U CN 202091307U CN 2011201917503 U CN2011201917503 U CN 2011201917503U CN 201120191750 U CN201120191750 U CN 201120191750U CN 202091307 U CN202091307 U CN 202091307U
- Authority
- CN
- China
- Prior art keywords
- cover plate
- upper cover
- mandrel
- lower cover
- clasp
- 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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Abstract
The utility model relates to the technical field of butt joint fasteners, and discloses a butt joint fastener, which is used for realizing connection of steel pipes and comprises an upper cover plate, a lower cover plate and a spindle. The upper cover plate, the lower cover plate and the spindle are serially connected by movable hinge pins, the spindle is disposed between the upper cover plate and the lower cover plate, bolt holes and opening grooves are respectively arranged on the upper cover plate and the lower cover plate, the upper cover plate is connected with the lower cover plate by bolts penetrating through the bolt holes and the opening grooves, and the spindle is a long strip-shaped groove structure. The butt joint fastener has the advantages that the butt joint fastener has few potential safety hazards and is not easy to be broken and damaged.
Description
Technical field
The utility model relates to and is used for the butt joint fastener technology field that steel pipe connects.
Background technique
In the prior art, steel pipe commonly used adopts common foundry goods to clasp is general, by the bolt on it enclosing cover to clasp is carried out fastening, thereby reach the purpose that steel pipe is stepped up.Because the enclosing cover to clasp needs to contact for a long time with steel pipe, so be easy to produce loosening and slip, sometimes since bolt to step up dynamics excessive, also can cause enclosing cover distortion and damage to clasp, thereby cause the loosening of steel pipe or come off, bring very big inconvenience, sometimes even can cause bad accident to use, existing common mandrel strength deficiency to clasp damages easily.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art and provides a kind of non-damageable to clasp.
The purpose of this utility model is achieved in that clasp, comprise the upper cover plate, lower cover plate and the mandrel that form serial connection by active pin shaft, mandrel is arranged between upper cover plate and the lower cover plate, be respectively arranged with bolt hole and opening slot on upper cover plate and the lower cover plate, upper cover plate is connected by the bolt that passes bolt hole and opening slot with lower cover plate, and described mandrel is a long strip groove shape structure.
Both sides at the groove of the mandrel of long strip groove shape structure are provided with outside bending section.
Described mandrel is connected with active pin shaft by the link of sector structure.
The link of described sector structure is fixedly installed on the intermediate portion of mandrel.
Described mandrel is an one-step die casting.
The utlity model has following advantage: described in the utility model to clasp, by improvement, thereby improved the intensity of mandrel, because the mandrel of groove shape structure is not easy fracture to a certain extent or damages to cover plate and mandrel.What China used at present is the cast iron fastener to the clasp major part, and its production technology falls behind, and is difficult to control from technology such as moulding, steel-making, heat treatment, assemblings, unstable product quality, and potential safety hazard is big.Described in the utility model to clasp, outer plate steel plate shaped by fluid pressure, mandrel is with cast steel or steel plate shaped by fluid pressure, thoroughly solved the defective of cast iron fastener, improved intensity, ruptured easily as the past fastener to clasp, the connected element strength deficiency, potential safety hazard is big.The all steel of development is not to existing the damage phenomenon under the normal use condition of clasp now.
Description of drawings
Fig. 1 is an overall structure schematic representation of the present utility model.
Fig. 2 is the structural representation of upper cover plate of the present utility model.
Fig. 3 is the cross section structure schematic representation of mandrel of the present utility model.
Embodiment
As shown in Figure 1, 2, 3, the utility model comprises upper cover plate 1, lower cover plate 3 and the mandrel 4 that forms serial connection by active pin shaft 2, mandrel 4 is arranged between upper cover plate 1 and the lower cover plate 3, be respectively arranged with bolt hole 6 and opening slot 7 on upper cover plate 1 and the lower cover plate 3, upper cover plate 1 is connected by the bolt that passes bolt hole 6 and opening slot 7 with lower cover plate 3, and described mandrel 4 is a long strip groove shape structure.
Both sides at the groove of the mandrel 4 of long strip groove shape structure are provided with outside bending section 8.
Described mandrel 4 is connected with active pin shaft 2 by the link 5 of sector structure.
The link 5 of described sector structure is fixedly installed on the intermediate portion of mandrel 4.
Described mandrel 4 is an one-step die casting.
Claims (5)
1. to clasp, comprise the upper cover plate (1), lower cover plate (3) and the mandrel (4) that form serial connection by active pin shaft (2), mandrel (4) is arranged between upper cover plate (1) and the lower cover plate (3), be respectively arranged with bolt hole (6) and opening slot (7) on upper cover plate (1) and the lower cover plate (3), upper cover plate (1) is connected by the bolt that passes bolt hole (6) and opening slot (7) with lower cover plate (3), it is characterized in that: described mandrel (4) is a long strip groove shape structure.
2. according to claim 1 to clasp, it is characterized in that: the both sides at the groove of the mandrel (4) of long strip groove shape structure are provided with outside bending section (8).
3. according to claim 1 to clasp, it is characterized in that: described mandrel (4) is connected with active pin shaft (2) by the link (5) of sector structure.
4. according to claim 3 to clasp, it is characterized in that: the link of described sector structure (5) is fixedly installed on the intermediate portion of mandrel (4).
5. according to claim 1 to clasp, it is characterized in that: described mandrel (4) is an one-step die casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201917503U CN202091307U (en) | 2011-06-09 | 2011-06-09 | Butt joint fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201917503U CN202091307U (en) | 2011-06-09 | 2011-06-09 | Butt joint fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202091307U true CN202091307U (en) | 2011-12-28 |
Family
ID=45366376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201917503U Expired - Fee Related CN202091307U (en) | 2011-06-09 | 2011-06-09 | Butt joint fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202091307U (en) |
-
2011
- 2011-06-09 CN CN2011201917503U patent/CN202091307U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20150609 |
|
| EXPY | Termination of patent right or utility model |