CN102996601A

CN102996601A - Bolt for rapidly positioning bearing

Info

Publication number: CN102996601A
Application number: CN2012105217839A
Authority: CN
Inventors: 李华
Original assignee: NINGBO JINDING FASTENERS CO Ltd
Current assignee: NINGBO JINDING FASTENERS CO Ltd
Priority date: 2012-12-07
Filing date: 2012-12-07
Publication date: 2013-03-27

Abstract

The invention discloses a bolt for rapidly positioning bearing. The bolt comprises a screw, wherein an axial through hole is formed in the screw; a straight rod is arranged inside the through hole; the part on the screw with an outer thread is divided into a plurality of pieces; and the plurality of pieces are rotatably connected with the part of the screw without outer threads. The bolt can directly stretch into the deepest part of the thread hole when being installed, and the straight rod is pushed into the through hole formed by the plurality of pieces, and a long screw does not need to be screwed into the through hole step by step, so that the time for installation is reduced, and the installation is rapid and convenient.

Description

A kind of quick positioning bearing bolt

Technical field

The present invention relates to a kind of fastening piece, specifically a kind of quick positioning bearing bolt.

Background technique

Bolt is a kind of by head and screw rod (with an externally threaded cylindrical body) class fastening piece dimerous, needs to cooperate with nut or screw, is used for being fastenedly connected two with the part of through hole.This Connecting format claims bolt to connect.As nut is screwed off from bolt, can make again these two parts separately, be to belong to removably connect so bolt connects.

Traditional bolt when mounted, when running into internal thread in the tapped hole, just bolt need to be rotated into the outside thread on the screw rod, can not exert an influence for the firm degree of installing like this, and for the long bolt of outside thread on the screw rod, the rotation installation can expend a large amount of time of workman like this, so that installation efficiency is low, therefore, it is imperative that research and design goes out a kind of bolt easy for installation.

Summary of the invention

The present invention is directed to the prior art deficiency, a kind of quick positioning bearing bolt is provided, this kind bolt can improve the installation efficiency of bolt, saves the installation time, and good fastening effect.

In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals: a kind of quick positioning bearing bolt, comprise screw rod, described screw rod is provided with axial through hole, be provided with straight-bar in the described through hole, be with externally threaded part to be divided into some on the described screw rod, some described is rotationally connected with the not threaded place of screw rod.This kind bolt when mounted, be with externally threaded part owing to be arranged to some, in the time of in stretching into screw some described is concentrated in together, can directly extend into the bottom of screw, the throughhole portions that then straight-bar is stretched into some can realize fastening effect.

In the technique scheme, preferred, the below diameter in the described through hole is greater than the top diameter, and the corresponding lower diameter of described straight-bar is greater than upper diameter.Can prevent that like this straight-bar from dropping out from the top of through hole.

In the technique scheme, be provided with elastomer on some described.Like this can so that this kind bolt before use some all fit together, need not re-use other way during use some described is fit together, and then stretch in the screw, reduced the step of using, so that use convenient.

In the technique scheme, preferred, described elastomer is arranged on some described lower ends.Be arranged on some described belows and can prevent that elastomer from exerting an influence to the screw thread on some described.

The present invention compared with prior art, has following beneficial effect: the invention enables bolt to wait when mounted the bosom that directly can put in screw, again straight-bar is pushed in the through hole of some described compositions, need not rotate into very long screw rod is piecemeal, reduced the time of installing, become quick and convenient so that install.

Description of drawings

Fig. 1 is the worm's eye view of the embodiment of the invention one.

Fig. 2 is that the A-A of the embodiment of the invention one is to sectional view.

Fig. 3 is that straight-bar pushes phase diagram in some described among Fig. 2.

Fig. 4 is the bolt arrangement schematic representation of the embodiment of the invention two.

Fig. 5 is the enlarged view at A place among Fig. 4.

Fig. 6 is the first elastic component of the embodiment of the invention two and the schematic representation of the first fixture block.

Fig. 7 is the nut structure schematic representation of the embodiment of the invention three.

Fig. 8 is the enlarged view at B place among Fig. 7.

Fig. 9 is the second elastic component of the embodiment of the invention three and the schematic representation of the second fixture block.

Embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail: referring to Fig. 1 to Fig. 3, embodiment one, a kind of quick positioning bearing bolt, comprise screw rod 102, the centre of described screw rod 102 is provided with axial through hole 2, described through hole 2 is a step hole, the below of step hole is greater than the top, be provided with a straight-bar 3 in the described through hole 2, described straight-bar 3 also is provided with a step, the lower end diameter of straight-bar 3 is greater than upper end diameter, such cooperation can guarantee that straight-bar 3 does not drop out from the upper end of through hole 2, so that this bolt is also more convenient when installing, part with outside thread 4 on the described screw rod 102 is divided into four sheets 5, four sheets 5 are rotationally connected by roll pin 7 with the not threaded place of screw rod 102, these four sheets 5 can rotate in several angle, the maximum angle that these four sheets 5 open is for parallel with straight-bar 3, the in the same size of the through hole 2 the when lower end diameter of straight-bar 3 and four sheets 5 open maximum angle, the bottom in these four sheet 5 outsides is arranged with elastic ring 6, before the installation, elastic ring 6 with four sheet 5 bullets together like this can be so that this bolt 100 can directly extend into the bottom of screw.

This kind bolt when mounted, be with externally threaded part owing to be arranged to four sheets 5, elastic ring 6 concentrates in together four sheets 5 in the time of in stretching into screw, can directly extend into the bottom of screw, then straight-bar 3 is stretched into through hole 2 parts that four sheets 5 form, four sheets 5 open up into maximum angle, straight-bar 3 fills up the through hole 2 of four sheet 5 inside, for the through hole 2 that stretches into owing to straight-bar 3 in four sheets 5, same so that the air pressure increase in the through hole 2 of four sheet 5 compositions, four sheets 5 are pressed to internal thread, so also increased the fastening degree that internal and external threads cooperates, if for convenient disassembly, reduce the pressure between the internal and external threads, also can increase effect by the air pressure when straight-bar 3 increase exhaust ports insert in the through holes 2 in order to remove straight-bar 3.

Referring to Fig. 4 to Fig. 6, embodiment two, a kind of nut assembly, comprise that nut does not draw among bolt 100 and nut 200(Fig. 1 to Fig. 3), described bolt 100 and nut 200 are hexagon, described bolt 100 comprises bolt head 101 and screw rod 102, described bolt head 101 is provided with some the first grooves 103 near on the face of screw rod 102, be provided with the first inclined-plane 104 in described the first groove 103, also include the first elastic component 300, described the first elastic component 300 is connected with the first fixture block 400, be provided with the second inclined-plane 401 on described the first fixture block 400, described the first inclined-plane 104 cooperates slip with the second inclined-plane 401, in the present embodiment, be provided with described first groove 103 of several end-to-ends on the described bolt head 101, form ring, so that the position of blocking of the first fixture block 400 on bolt head 101 is more, so that precision is higher, like this when this nut 200 assembly is installed, projection place at mounting hole next door the first groove 103 arranges first mounting groove, the first elastic component 300 is packed in described the first mounting groove 103, the first fixture block 400 stretches out described the first mounting groove, when mounted, the nut 200 of hexagonal is stuck in the counterbore of hexagonal, bolt 100 is passed the mounting hole rotation be screwed into nut 200, the first inclined-plane 104 and the second inclined-plane 401 cooperate after touching the first fixture block 400, so that bolt 100 can only be twisted along a direction, facing directly of the second inclined-plane 401 can stop the first fixture block 400 backward rotation, continuation rotates into nut 200 until thoroughly tighten with bolt 100, just be difficult to like this unclamp after bolt 100 is tightened, the nut assembly of mobile position is not most suitable for this long-term use of offshore oil pipeline again.

Referring to Fig. 7 to Fig. 9, embodiment three, a kind of nut assembly, comprise that bolt does not draw among bolt 100(Fig. 4 to Fig. 6) and nut 200, described bolt 100 and nut 200 are hexagon, because when mounted can nut 200 motionless stubborn bolts 100 also can bolt 100 motionless nuttings 200, therefore similarly, also the structure that adopts on the bolt 100 can be used in and reach identical technique effect on the nut 200, be provided with at least one second groove 201 on described nut 200 at least one face, be provided with the 3rd inclined-plane 202 in described the second groove 201, also comprise the second elastic component 500, described the second elastic component 500 is connected with the second fixture block 600, be provided with the 4th inclined-plane 601 on described the second fixture block 600, described the 3rd inclined-plane 202 and the 4th inclined-plane 601 cooperate slip, in the present embodiment, be provided with the second groove 201 of several end-to-ends on described nut 200 at least one face, form ring.The second groove 201 of several end-to-ends is set so that the position of blocking of the second fixture block 600 on nut 200 is more, so that precision is higher, more effective nut 200 backward rotation that prevent.Like this when this nut 200 assembly is installed, projection place at mounting hole next door the second groove 201 arranges second mounting groove, the second elastic component 500 is packed in described the second mounting groove, the second fixture block 600 stretches out described the second mounting groove, when mounted, the bolt head 101 of hexagonal is stuck in the counterbore of hexagonal, nut 200 is screwed in the bolt 100, the 3rd inclined-plane 202 and the 4th inclined-plane 601 cooperate after touching the second fixture block 600, so that nut 200 can only be twisted along a direction, the second fixture block 600 can stop nut 200 backward rotation, continues nut 200 is rotated into bolt 100 until thoroughly tighten.

Claims

1. quick positioning bearing bolt, comprise screw rod (102), it is characterized in that: described screw rod (102) is provided with axial through hole (2), be provided with straight-bar (3) in the described through hole (2), the part of described screw rod (102) upper band outside thread (4) is divided into some (5), and some described (5) are rotationally connected with the not threaded place of screw rod (102).

2. a kind of quick positioning bearing bolt as claimed in claim 1 is characterized in that: the below diameter in the described through hole (2) is greater than the top diameter, and the corresponding lower diameter of described straight-bar (3) is greater than upper diameter.

3. a kind of quick positioning bearing bolt as claimed in claim 1 is characterized in that: be provided with elastomer (6) on some described (5).

4. a kind of quick positioning bearing bolt as claimed in claim 3, it is characterized in that: described elastomer (6) is arranged on the lower end of some described (5).