CN207848134U - A kind of anti-transfer anchor bolt - Google Patents

Abstract

The utility model is related to a kind of anti-transfer anchor bolts, including bolt, expansion tube, expansion tube includes expansion piece, expansion tube tail portion is equipped with circumferential band, expansion tube head inner sleeve has expansion nut, expansion piece head on both sides are equipped with oblique contraction front, oblique contraction front on two neighboring expansion piece forms V-notch, it is convex that expansion nut outer wall is equipped with point, expansion piece both sides are equipped with antiskid claw, i.e. sharp convex point convex both sides when travelling forward are equipped with limiting plate outwardly against antiskid claw, expansion piece front end, and the expansion tube of V-notch tail portion is cased with quoit.The utility model pieces together expansion tube using the expansion piece of four splits and circumferential band and quoit is respectively set in expansion tube tail portion and head, ensure the stability of expansion tube, it is simple in structure, it is easy to process, it is at low cost, on antiskid claw and expansion nut point it is convex convenient for when expansion nut travels forward jack up block mounting hole inner wall effectively prevent installation when expansion tube and expansion nut transfer, limiting plate effectively prevent expansion bolt that expansion nut is ejected expansion tube.

Description

A kind of anti-transfer anchor bolt

Technical field

The utility model is related to fastener, more particularly to a kind of anti-transfer anchor bolt.

Background technology

Anchor bolt is usually made of bolt, expansion tube and nut as common fastener, and when installation expands tube swelling Block mounting hole, screw bolt and nut, which must relatively rotate, when installation could open expansion tube swelling, and anchor bolt is usually deposited when mounted Expansion tube is caused to be difficult to expansion issues in expansion tube and nut transfer.

Utility model content

In view of the deficiencies of the prior art, the technical solution of the utility model attempts to solve at least portion in above-mentioned technical problem Point defect at least partly overcomes the problems of prior art.

Technical solution adopted by the utility model to solve its technical problems is：A kind of anti-transfer anchor bolt, including bolt, set Expansion tube on the bolt, accompanies gasket between the bolt and the expansion tube, the expansion tube includes the swollen of arc Swollen, for the expansion piece along the bolt circumferential skewing, the expansion piece pieces together the expansion tube of tubular, the expansion tube tail portion Equipped with circumferential band, the circumferential band inner wall is bonded with the expansion piece outer wall, and the expansion tube head inner sleeve has and the bolt The expansion nut of threaded connection, the expansion piece head on both sides are equipped with the oblique contraction front shunk to the expansion piece head center, Oblique contraction front on the two neighboring expansion piece forms V-notch, and the expansion nut outer wall is convex equipped with point, before the point is convex Both sides and the left and right sides are inclined-plane afterwards, and the expansion piece both sides are equipped with the antiskid claw extended to expansion piece both sides, and the V-arrangement lacks The distance between mouth both sides antiskid claw is less than on expansion nut the convex both sides width of point with diameter with antiskid claw, i.e., before the described point is convex to When movement the convex both sides of point are outwardly against the antiskid claw, and the expansion piece front end is equipped with to be extended to expansion tube front end center The internal diameter of limiting plate, limiting plate end institute split is less than the expansion nut outer diameter, the expansion tube of the V-notch tail portion On be cased with quoit.

Expansion tube is pieced together using the expansion piece of four splits and set respectively on expansion tube tail portion and head in above-mentioned design Circumferential band and quoit are set, ensures the stability of expansion tube, simple in structure, easy to process, at low cost, antiskid claw and expanding screw Point is convex on mother blocks expansion tube and expansion when mounting hole inner wall effectively prevent installing convenient for being jacked up when expansion nut travels forward Nut transfer, limiting plate effectively prevent expansion bolt that expansion nut is ejected expansion tube.

As being further improved for the design, the expansion tube is equipped with the annular groove for accommodating the quoit, the gold Belong to circle both ends to be not attached to, convenient for fixing expansion piece and expanding convenient for expansion piece.

As being further improved for the design, the antiskid claw is equipped with the expansion piece junction along expansion tube mother The deformation slot that line direction extends deforms convenient for antiskid claw.

As being further improved for the design, the expansion nut tail end is equipped with the cone circumferentially extended along the expansion nut Face, the conical surface are less than the other end towards expansion tube tail portion one end outer diameter, are convenient for bolt to sinciput expansion nut.

As being further improved for the design, the circumferential band tail portion is collapsed to the expansion tube hub, adjacent described swollen A v notch v is equipped between swollen tail portion, to expansion piece good limit effect.

As being further improved for the design, plastic hoop, the plastic hoop outer wall and institute are equipped in the expansion tube tail portion Expansion inside pipe wall fitting is stated, prevents expansion piece from inwardly caving in.

As being further improved for the design, the circumferential band outer wall is equipped with to be prevented along what the circumferential band generatrix direction extended Sliding line, further prevents expansion tube transfer.

The utility model has the beneficial effects that：The utility model using the expansion piece of four splits piece together expansion tube and Circumferential band and quoit is respectively set in expansion tube tail portion and head, ensures the stability of expansion tube, simple in structure, easy to process, At low cost, convex convenient for being jacked up when expansion nut travels forward, to block mounting hole inner wall effective for point on antiskid claw and expansion nut Prevent expansion tube and expansion nut transfer, limiting plate when installation from effectivelying prevent expansion bolt that expansion nut is ejected expansion tube.

Description of the drawings

The utility model is further illustrated with reference to the accompanying drawings and examples.

Fig. 1 is the overall structure diagram of the utility model.

Fig. 2 is the expansion tube head position diagrammatic cross-section of the utility model.

Fig. 3 is the expansion nut longitudinal profile schematic diagram of the utility model.

Fig. 4 is the expansion tube tail portion diagrammatic cross-section of the utility model.

1. bolt in figure, 2. gaskets, 3. circumferential bands, 4. expansion tubes, 5. annular grooves, 6.V v notch vs, 7. oblique contraction fronts, 8. expansion nut, 9. quoits, 10. anti-skid chequers, 11. limiting plates, 12. antiskid claws, 13. expansion pieces, 14. deformation slots, 15. points It is convex, 16. plastic hoops, 17. v notch vs, 18. conical surfaces.

Specific implementation mode

Be described in detail the utility model below in conjunction with attached drawing and specific embodiment, illustrative examples therein with And explanation is only used for explaining the utility model, but be not intended to limit the scope of the present invention.

Embodiment：A kind of anti-transfer anchor bolt, including bolt 1, the expansion tube 4 that is sleeved on the bolt 1, the bolt 1 with Gasket 2 is accompanied between the expansion tube 4, the expansion tube 4 includes the expansion piece 13 of arc, and the expansion piece 13 is along the bolt 1 circumferential skewing, the expansion piece 13 piece together the expansion tube 4 of tubular, and 4 tail portion of the expansion tube is equipped with circumferential band 3, the annular It binds round 3 inner walls to be bonded with 13 outer wall of the expansion piece, the expansion tube is cased with the expansion being threadedly coupled with the bolt 1 in 4 head Nut 8,13 head on both sides of the expansion piece are equipped with the oblique contraction front 7 shunk to 13 head center of the expansion piece, two neighboring Oblique contraction front 7 on the expansion piece 13 forms V-notch 6, and 8 outer wall of the expansion nut is equipped with point convex 15, the point convex 15 Front and rear sides and the left and right sides are inclined-plane, and 13 both sides of the expansion piece are equipped with the antiskid claw 12 extended to 13 both sides of expansion piece, The distance between 6 both sides antiskid claw 12 of the V-notch is less than on expansion nut 8 wide with convex 15 both sides of point of diameter with antiskid claw 12 Degree, i.e., convex 15 both sides of point are outwardly against the antiskid claw 12,13 front end of the expansion piece when point convex 15 travels forward Equipped with the limiting plate 11 extended to 4 front end center of expansion tube, the internal diameter of 11 end institutes of limiting plate split is less than the expansion 8 outer diameter of nut is cased with quoit 9 on the expansion tube 4 of 6 tail portion of the V-notch.

Expansion tube 4 is pieced together using the expansion piece 13 of four splits and divide in 4 tail portion of expansion tube and head in above-mentioned design Not She Zhi circumferential band 3 and quoit 9, ensure expansion tube 4 stability, simple in structure, easy to process, at low cost, antiskid claw 12 And point convex 15 blocks mounting hole inner wall and effectively prevent installing convenient for being jacked up when expansion nut 8 travels forward on expansion nut 8 When 8 transfer of expansion tube 4 and expansion nut, limiting plate 11 effectively prevent expansion bolt 1 by expansion nut 8 eject expansion tube 4.

As being further improved for the design, the expansion tube 4 is equipped with the annular groove 5 for accommodating the quoit 9, described 9 both ends of quoit are not attached to, convenient for fixing to expansion piece 13 and being expanded convenient for expansion piece 13.

As being further improved for the design, the antiskid claw 12 is equipped with 13 junction of the expansion piece along the expansion The deformation slot 14 that 4 generatrix direction of pipe extends deforms convenient for antiskid claw 12.

As being further improved for the design, 8 tail end of the expansion nut, which is equipped with, to be circumferentially extended along the expansion nut 8 The conical surface 18, the conical surface 18 are less than the other end towards 4 tail portion one end outer diameter of the expansion tube, are convenient for bolt 1 to sinciput expanding screw Mother 8.

As being further improved for the design, 3 tail portion of the circumferential band is collapsed to 4 center of the expansion tube, adjacent described A v notch v 17 is equipped between 13 tail portion of expansion piece, to 13 good limit effect of expansion piece.

As being further improved for the design, plastic hoop 16,16 outer wall of the plastic hoop are equipped in 4 tail portion of the expansion tube It is bonded with 4 inner wall of the expansion tube, prevents expansion piece 13 from inwardly caving in.

As being further improved for the design, 3 outer wall of the circumferential band, which is equipped with, to be extended along 3 generatrix direction of the circumferential band Anti-skid chequer 10 further prevents 4 transfer of expansion tube.

The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in Other related technical areas are equally included in the patent within the scope of the utility model.

Claims (7)

1. a kind of anti-transfer anchor bolt, including bolt, the expansion tube that is sleeved on the bolt, which is characterized in that the bolt and institute State and accompany gasket between expansion tube, the expansion tube includes the expansion piece of arc, the expansion piece along the bolt circumferential skewing, The expansion piece pieces together the expansion tube of tubular, and the expansion tube tail portion is equipped with circumferential band, the circumferential band inner wall with it is described swollen Swollen outer wall fitting, the expansion tube head inner sleeve have the expansion nut being connect with the bolt thread, the expansion sheet head Both sides are equipped with the oblique contraction front shunk to the expansion piece head center, the oblique contraction front composition on the two neighboring expansion piece V-notch, the expansion nut outer wall are equipped with that point is convex, and the convex front and rear sides of the point and the left and right sides are inclined-plane, the expansion Piece both sides are equipped with the antiskid claw extended to expansion piece both sides, and the distance between V-notch both sides antiskid claw is less than expanding screw With antiskid claw with the convex both sides width of point of diameter on mother, i.e., the described point is convex when travelling forward, and the convex both sides of point are prevented outwardly against described Sliding pawl, the expansion piece front end are equipped with the limiting plate extended to expansion tube front end center, limiting plate end institute split it is interior Diameter is less than the expansion nut outer diameter, and quoit is cased on the expansion tube of the V-notch tail portion.

2. a kind of anti-transfer anchor bolt according to claim 1, characterized in that the expansion tube, which is equipped with, accommodates the metal The annular groove of circle, the quoit both ends are not attached to.

3. a kind of anti-transfer anchor bolt according to claim 1, characterized in that the antiskid claw and the expansion piece junction Equipped with the deformation slot extended along the expansion tube generatrix direction.

4. a kind of anti-transfer anchor bolt according to claim 1, characterized in that the expansion nut tail end is equipped with along described swollen The conical surface of expansion nut circumferentially extending, the conical surface are less than the other end towards expansion tube tail portion one end outer diameter.

5. a kind of anti-transfer anchor bolt according to claim 1, characterized in that the circumferential band tail portion is into the expansion tube The heart collapses, and a v notch v is equipped between the adjacent expansion piece tail portion.

6. a kind of anti-transfer anchor bolt according to claim 1, characterized in that plastic hoop is equipped in the expansion tube tail portion, The plastic hoop outer wall is bonded with the expansion inside pipe wall.

7. a kind of anti-transfer anchor bolt according to claim 1, characterized in that the circumferential band outer wall is equipped with along the annular Bind round the anti-skid chequer that generatrix direction extends.