CN201705770U

CN201705770U - Novel expansion bolt with spring washer

Info

Publication number: CN201705770U
Application number: CN2010201525038U
Authority: CN
Inventors: 邱妈争
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-04-08
Filing date: 2010-04-08
Publication date: 2011-01-12
Anticipated expiration: 2020-04-08

Abstract

The utility model discloses a novel expansion bolt with a spring washer, which comprises a stud, the spring washer, an expansion sleeve, a gasket, a spring ring and a nut. A conical head is formed at the top end of the stud; the spring washer, the expansion sleeve, the gasket, the spring ring and the nut are sequentially sleeved on the stud; the spring washer corresponds to the conical head of the stud; the conical head consists of two oblique conical surfaces; and a conical edge is formed between the oblique conical surfaces. The novel expansion bolt with the spring washer has the advantages that at least two oblique conical surfaces are formed on the conical head of the stud, the conical edge is formed between the oblique conical surfaces, the conical edge is embedded into the spring washer to avoid slip of the stud when the spring washer is sleeved into the conical edge, the pressure bearing area of the stud is increased, the expansion sleeve is arranged below the spring washer, and the expansion sleeve can be abutted onto the spring washer when the nut is screwed up, thereby realizing a fastening effect. Simultaneously, as stripes or corrugations are arranged on the outer surface of the expansion sleeve, the expansion sleeve is prevented from rotating and slipping, and additionally the novel expansion bolt performs the function of expansion.

Description

A kind of upset bolt that has the bullet pad

Technical field

The utility model relates to a kind of EXPANSION ANCHOR BOLTS, specifically, relate to a kind of EXPANSION ANCHOR BOLTS that has the bullet pad, can be used for the EXPANSION ANCHOR BOLTS that wall, ground etc. in the construction engineering are located fixed installation object and rigidity friable plate materials such as stone material, stupalith and crystal glass in the pre-drilled.

Background technique

EXPANSION ANCHOR BOLTS is a kind of metal fixing, mainly is extensive use of on equipments such as industry, building industry, agricultural, transport facility, bridge, waterpower and electric power, and in the prior art, EXPANSION ANCHOR BOLTS is made up of double-screw bolt, expansion sleeve, pad, spring ring and nut.The subject matter that existing bolt exists is loosening easily, and compressive resistance is little, and is fixing not firm, particularly at some vibrations positions, and the counterrotating that the bolt of tightening can nature and become flexible, thus bring fault and hidden danger for mechanical operation.Owing to worry nut loosening, the workman often the nut overtorquing, gently then makes relevant parts elasticity disappear when construction, and is heavy then cause screw thread damage or screw rod to rupture.In order to address this problem, people have developed spring ring and retainingf key cover, and wherein spring washer is one not in one plane part of opening and opening both sides, utilize self elasticity that both sides are formed pressure and prevent to become flexible.The key cover is a kind of annulus that is enclosed within on the screw rod, and nut is pressed on key and puts during work, is limited the counteragent of nut by mutual friction, no matter is spring washer or key cover, all can not thoroughly solve the problem of nut loosening.Its reason is that helical itself is to tilt, and exists under the situation of extrapolability, and the inclined-plane of two contacts must have the possibility that retreats.And spring washer also provides this thrust backward for becoming flexible when forming end-face friction.Though the key cover can compulsoryly prevent to rotate, and can not block outside thrust, be plane contact between key cover and the nut in addition, can not effectively prevent the derotation of nut.

Summary of the invention

Technical problem to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of and can prevent nut counterrotating, compressive resistance, avoids the loosening novel bolt that has the bullet pad of nature.

The technological scheme that the utility model adopted is: a kind of EXPANSION ANCHOR BOLTS that has the bullet pad, comprise double-screw bolt, bullet pad, expansion sleeve, pad, spring ring and nut, the double-screw bolt top is formed with coniform head, described bullet pad, expansion sleeve, pad, spring ring, nut are placed on the double-screw bolt successively, the bullet pad is corresponding to the coniform head of double-screw bolt, the conical surface of coniform head is made up of two tilted conical surfaces, is formed with the awl rib between the tilted conical surface.Expansion sleeve is corresponding to playing rebasing one side, and outer surface is provided with striped or ripple, it is characterized in that, the conical surface of described coniform head is made up of two tilted conical surfaces, be formed with the awl rib between the tilted conical surface, play cushion cover and go in the awl rib of coniform head, expansion sleeve is arranged at the bottom of bullet pad.

The upset bolt that has the bullet pad that the utility model provides, its beneficial effect is, coniform head at double-screw bolt is formed with at least two tilted conical surfaces, form the awl rib between tilted conical surface, cushion cover is fashionable when playing, the awl rib embeds in the bullet pad, double-screw bolt just can not skid, and increases the compression area of double-screw bolt, and expansion sleeve is arranged at bullet pad below, when the nut screw-in is tightened, expansion sleeve will push up on the bullet pad, thereby plays fastening effect, simultaneously because the outer surface of expansion sleeve is provided with striped or ripple, prevent that expansion sleeve rotation from skidding, also play the effect of expansion in addition.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model STRUCTURE DECOMPOSITION schematic representation.

Among the figure: 1, double-screw bolt 2, tilted conical surface 3, awl rib 4, cone head 5, expansion sleeve 6, spring ring 7, pad 8, nut 9, bullet pad

Embodiment

Practical formula is novel is further described in detail to this below in conjunction with accompanying drawing:

As shown in Figure 1 and Figure 2, the technological scheme that the utility model adopted is: a kind of EXPANSION ANCHOR BOLTS that has the bullet pad, comprise double-screw bolt 1, bullet pad 9, expansion sleeve 5, pad 7, spring ring 6 and nut 8, double-screw bolt 1 top is formed with coniform head 4, described bullet pad 9, expansion sleeve 5, pad 7, nut 8 are placed on the double-screw bolt 1 successively, bullet pad 9 is corresponding to double-screw bolt 1 coniform head 4, and the conical surface of coniform head 4 is made up of two tilted conical surfaces 2, is formed with awl rib 3 between the tilted conical surface 2.Expansion sleeve 5 is corresponding to bullet pad 9 bottoms one side, and outer surface is provided with striped or ripple.

The EXPANSION ANCHOR BOLTS that model utility provides, its beneficial effect is, coniform head at double-screw bolt is formed with at least two tilted conical surfaces, form the awl rib between tilted conical surface, cushion cover is fashionable when playing, the awl rib embeds in the bullet pad, double-screw bolt just can not skid, and increases the compression area of double-screw bolt, and expansion sleeve is arranged at bullet pad below, when the nut screw-in is tightened, expansion sleeve will push up on the bullet pad, thereby plays fastening effect, simultaneously because the outer surface of expansion sleeve is provided with striped or ripple, prevent that expansion sleeve rotation from skidding, also play the effect of expansion in addition.

Claims

1. upset bolt that has the bullet pad, comprise double-screw bolt, the bullet pad, expansion sleeve, pad, spring ring and nut, the double-screw bolt top is formed with coniform head, described bullet pad, expansion sleeve, pad, spring ring, nut is placed on the double-screw bolt successively, the bullet pad is corresponding to the coniform head of double-screw bolt, the conical surface of coniform head is made up of two tilted conical surfaces, be formed with the awl rib between the tilted conical surface, expansion sleeve is corresponding to playing rebasing one side, and outer surface is provided with striped or ripple, it is characterized in that, the conical surface of described coniform head is made up of two tilted conical surfaces, be formed with the awl rib between the tilted conical surface, play cushion cover and go in the awl rib of coniform head, expansion sleeve is arranged at the bottom of bullet pad.