CN2285388Y - Surface-roughed expansion pin - Google Patents
Surface-roughed expansion pin Download PDFInfo
- Publication number
- CN2285388Y CN2285388Y CN 97202890 CN97202890U CN2285388Y CN 2285388 Y CN2285388 Y CN 2285388Y CN 97202890 CN97202890 CN 97202890 CN 97202890 U CN97202890 U CN 97202890U CN 2285388 Y CN2285388 Y CN 2285388Y
- Authority
- CN
- China
- Prior art keywords
- pin
- expansion
- expansion sleeve
- roughed
- sheath
- 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 a surface-roughed expansion pin for fixing rails in various buildings. The surface-roughed expansion pin is formed by inserting an expansion sheath and a pin, wherein, the expansion sheath is in a cylindrical shape, the upper edge of the expansion sheath is designed into a flanged edge, an opened groove is arranged on one side of the expansion sheath, and the peripheral surface of the expansion sheath is provided with a plurality of inner convexities according to certain interval; the pin is in a cylindrical shape, and the pin is forced to be pumped in the expansion sheath arranged in a ground hole and fixes the expansion sheath and the ground hole. The surface-roughed expansion pin has the advantages of simple structure, convenient installation, good fixing effect and low cost.
Description
The utility model relates to a kind of pitted skin expansion pin that is used for fixing banister when setting up railing on various building stair.
Now the general method that adopts is during the fixed hurdle roofbolt: make a call to a circular hole earlier on step surface, EXPANSION ANCHOR BOLTS is put into circular hole, use nut screwing clamping after putting plain cushion, banister is welded on the plain cushion.EXPANSION ANCHOR BOLTS is made of expansion sleeve and bolt, expansion sleeve is enclosed within on the bolt, the insertion ground Kong Yiduan external diameter of bolt is thicker than expansion sleeve internal diameter, the expansion sleeve appropriate section has vee gutter, when fastening nut, the bolt butt end is clamp-oned expansion sleeve, make expansion sleeve open with the ground internal surface of hole near forming interference fit, make plain cushion paste ground then and fix.This structure is owing to have only the part and the ground internal surface of hole that have groove on the expansion sleeve to form interference fit, so fixing not firm, even nut is tightened fully, its part of basseting also has loosening.
In order to address this problem common way is that EXPANSION ANCHOR BOLTS is installed in depths, the face of land, adopt this method EXPANSION ANCHOR BOLTS length that need extend, the ground hole depth also will be deepened, and on the step surface of forming by cement and cobble, beat deep hole, difficulty is very big, nutting also needs very big strength, makes troubles to construction, and construction cost also improves.
The purpose of this utility model provides a kind of pitted skin expansion pin that is used for fixing banister, and it can fix plain cushion and banister on the ground very securely, and construction is simple, cost is low.
The purpose of this utility model is achieved through the following technical solutions: a kind of pitted skin expansion pin is plugged by expansion sleeve and pin and constitutes, expansion sleeve is cylindric, and its top edge is set as flange, and the one side is provided with fluting, side face at it is provided with a plurality of internal projection at regular intervals, sells for cylindrical.Expansion sleeve is put into the hole of beating on step surface, ground after putting plain cushion, when pin being squeezed into expansion sleeve inside, pin withstands the internal projection of expansion sleeve inside, this moment is because expansion sleeve is provided with fluting, so expansion sleeve expands outwardly, and its whole outer surface and ground internal surface of hole are securely fixed on the ground plain cushion and the banister that is welded on the plain cushion near forming interference fit very much.
The utility model only needs to squeeze into a pin in expansion sleeve, just can make expansion sleeve whole outer surface and the ground internal surface of hole formation interference fit of combining closely, reach fixedly purpose, so only with once finishing construction to iron hammer, it is very convenient to construct, and fixed effect is simple in structure, make easily, cost is low.
Concrete structure of the present utility model is by following examples and description of drawings thereof.
Fig. 1 is an exploded perspective view of the present utility model.
Fig. 2 is an assembling section of the present utility model.
Fig. 3 is the A-A sectional drawing.
Fig. 4 is an installation sectional drawing of the present utility model.
Fig. 5 is embodiment's two an of the present utility model oblique drawing.
Fig. 6 is the B-B sectional drawing.
1, expansion sleeve 2, pin 3, flange 4, fluting 5, internal projection 6, annular groove 7, projection 8, friction projection 9, zigzag fashion 10, plain cushion 11, hole 12, banister
Embodiment one:
The utility model comprises expansion sleeve (1) and pin (2), expansion sleeve (1) is cylindric, its top edge is set as flange (3), the one side is provided with fluting (4), side face at it is provided with a plurality of internal projection (5) at regular intervals, pin (2) is cylindrical, the diameter of pin (2) can just be inserted in the expansion sleeve (1), the length of pin (2) equates with the distance of expansion sleeve (1) flange (3) upper-end surface to internal projection (5) lower edge, guarantee pin (2) as long as when to be driven into its upper-end surface with flange (3) upper-end surface fair, just can finish fitting operation.It is low that the strength of materials of pin (2) cans be compared to expansion sleeve (1) most, can make pin (2) absorb the inner radial force of giving expansion sleeve (1) in hole, ground (11) like this, avoids hole, ground (11) to produce the crack on every side, influences fixed effect.During installation, put in the hole, ground (11) after on expansion sleeve (1), putting earlier plain cushion (10), again pin (2) is driven in the expansion sleeve (1), pin this moment (2) withstands the internal projection (5) in the expansion sleeve (1), expansion sleeve (1) is expanded outwardly, its outer surface and ground hole (11) the internal surface formation interference fit of combining closely is securely fixed in plain cushion (10) on the ground, banister (12) is welded on the plain cushion (10) again.
Embodiment two:
Outer surface at expansion sleeve (1) is provided with a plurality of friction projectioies (8), relative both sides, fluting (4) connecting part on the expansion sleeve (1) are designed to zigzag fashion (9) respectively, make fixing more firm in expansion sleeve (1) and hole, ground (11), other structure is identical with embodiment one.
Embodiment three:
At the middle part of pin (2) annular groove (6) is set, upper inner at expansion sleeve (1) is provided with projection (7), when pin (2) being put into expansion sleeve (1) inside, and the internal projection (5) in the bottom that makes pin (2) and the expansion sleeve (1) is when the upper edge contacts, projection (7) just can be blocked the annular groove (6) at pin (2) middle part, to sell (2) and be stuck in the expansion sleeve (1), other structure is identical with embodiment one.
Claims (5)
1, a kind of pitted skin expansion pin is characterized in that plugging formation by expansion sleeve (1) and pin (2), and expansion sleeve (1) is cylindric, its top edge is set as flange (3), the one side is provided with fluting (4), is provided with internal projection (5) at regular intervals at its side face, and pin (2) is cylindrical.
2, pitted skin expansion pin according to claim 1 is characterized in that being provided with friction projection (8) at the outer surface of expansion sleeve (1).
3,, it is characterized in that the relative both sides, fluting (4) connecting part on the expansion sleeve (1) are designed to zigzag fashion (9) respectively according to claim 1,2 described pitted skin expansion pin.
4, pitted skin expansion pin according to claim 1 is characterized in that being provided with annular groove (6) at the middle part of pin (2), is provided with projection (7) in the upper inner of expansion sleeve (1).
5, pitted skin expansion pin according to claim 1 is characterized in that the length of pin (2) equates with the distance of expansion sleeve (1) flange (3) upper-end surface to internal projection (5) lower edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97202890 CN2285388Y (en) | 1997-03-31 | 1997-03-31 | Surface-roughed expansion pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97202890 CN2285388Y (en) | 1997-03-31 | 1997-03-31 | Surface-roughed expansion pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2285388Y true CN2285388Y (en) | 1998-07-01 |
Family
ID=33923915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97202890 Expired - Fee Related CN2285388Y (en) | 1997-03-31 | 1997-03-31 | Surface-roughed expansion pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2285388Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032252A (en) * | 2009-10-06 | 2011-04-27 | 喜利得股份公司 | Expansion anchor |
| CN105782194A (en) * | 2016-04-29 | 2016-07-20 | 嘉善固威紧固件有限公司 | Large-size expansion bolt |
| CN107223186A (en) * | 2014-12-19 | 2017-09-29 | 雷克斯诺德有限公司 | The clutching member transmitted for axial moment of torsion and clutch arrangement and polydisc arrangement used |
-
1997
- 1997-03-31 CN CN 97202890 patent/CN2285388Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032252A (en) * | 2009-10-06 | 2011-04-27 | 喜利得股份公司 | Expansion anchor |
| CN107223186A (en) * | 2014-12-19 | 2017-09-29 | 雷克斯诺德有限公司 | The clutching member transmitted for axial moment of torsion and clutch arrangement and polydisc arrangement used |
| US10359079B2 (en) | 2014-12-19 | 2019-07-23 | Rexnord Gmbh | Coupling element and coupling assembly for axial torque transmission, and disc assembly therefor |
| CN105782194A (en) * | 2016-04-29 | 2016-07-20 | 嘉善固威紧固件有限公司 | Large-size expansion bolt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |