CN201198861Y

CN201198861Y - Anti-theft and anti-loose bolt

Info

Publication number: CN201198861Y
Application number: CNU2008200345562U
Authority: CN
Inventors: 唐树林
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-25
Filing date: 2008-04-25
Publication date: 2009-02-25
Anticipated expiration: 2018-04-25

Abstract

The utility model provides an anti-theft and anti-loose bolt which relates to an anti-theft and anti-loose bolt for connecting highway guardrail steel plates (hereinafter called guardrail). The guardrail which can overcome the problems that the prior bolt connecting guardrails can be stolen and loosened easily and can not be rotated reversely when being screwed; the anti-theft and anti-loose bolt comprises a bolt, a gasket and a nut which are connected with the connecting hole of the highway guardrail steel plate in order; the root of the bolt is provided with a protrude platform matching with the waist hole of the highway guardrail; the side of the gasket, which is opposite to the nut, is provided with four elastic ratchet-shape bulges which are separated from the gasket; the side of the gasket, which is opposite to the head of the bolt, is provided with two solid ratchet-shape bulges; and the side of the nut, which is opposite to the gasket, is provided with grooves matching with the elastic ratchet-shape bulges of the gasket. The anti-theft and anti-loose bolt has the advantages of anti-theft, anti-loose, and simple structure.

Description

Antitheft chek bolt

Technical field

The utility model relates to the antitheft chek bolt of freeway guardrail steel plate (hereinafter to be referred as guardrail) connection.

Background technique

It is by screw that divider current connects with bolt, and packing ring and nut are formed.But this connect to belong to plain bolt and connects, and is subjected to vibrations easily loosening for a long time, and tool using is just by demolition, thus easily stolen, owing to the stolen turnpike driving that makes of guardrail causes potential safety hazard.

The model utility content

Existingly protect that to block connecting bolt easily stolen for overcoming, easily loosening deficiency, the utility model provides a kind of to be made up of screw, packing ring, nut, after screwing, antitheft chek bolt that can not counter-rotating.

The technical solution of the utility model is: be made up of screw, packing ring, nut, screw, packing ring, nut are linked in sequence on the attachment hole of freeway guardrail steel plate, the screw root be provided with freeway guardrail on the adaptive outstanding platform in waist hole; Packing ring is provided with the elasticity ratchet-like projection that four parts and spacer ring body break away from towards the one side of nut, is provided with two solid ratchet-like projectioies towards the one side of screw head; Nut is provided with the groove that the elasticity ratchet-like projection with packing ring is complementary towards the one side of packing ring.

The outstanding platform of screw root has the long side of pair of parallel; Elasticity ratchet-like projection, the solid ratchet-like projection on packing ring two sides are equipped with positive rotation direction inclined-plane; Groove on the nut is established the inclined-plane of positive rotation direction.

Screw of the present utility model (as Fig. 1,2,3,4) places guardrail that waist hole 29*19 is installed, and it is adaptive that the outstanding platform part of screw root and guardrail are installed the waist hole, with respect to guardrail the waist hole is installed and do not turn.Packing ring (as Fig. 5,6,7) material selection spring steel 65Mn, the one side towards screw head of packing ring has two solid ratchet-like projectioies, this projection has the inclined-plane of positive rotation direction, solid ratchet-like convex portion is when being subjected to the nut clamping force, installation waist hole (Fig. 1) derotation that falls into guardrail is not to rotatable, the elasticity ratchet-like projection of the another side of packing ring, a part and the packing ring of projection partly break away from, and elasticity is protruded.Nut (as Fig. 8,9) is established groove towards the one side of packing ring, establishes the inclined-plane of positive rotation direction in the groove; The nut rotation, and after clamping between packing ring, elasticity ratchet-like projection on the packing ring and the mutual interlock of groove on the nut also clamp guardrail, and be oppositely rotatable.The outstanding platform of spline on the screw, packing ring is simultaneously gone up a pair of projection of spline, have the groove that is complementary with the packing ring elastic bumps on the elastic bumps of rotation direction and the nut on the packing ring another side, form reverse spline, locking mechanism jointly, to reach antitheft locking purpose.

The beneficial effects of the utility model are: antitheft locking, simple in structure.

Description of drawings

Fig. 1 is a structural representation of the present utility model

1 is screw among the figure, the 2nd, and packing ring, the 3rd, nut, the 4th, outstanding platform, the 5th, freeway guardrail;

Fig. 2 is the right elevation of Fig. 1

Fig. 3 is the structural representation of screw in the utility model

Fig. 4 is the right elevation of Fig. 3

Fig. 5 is the structural representation of the utility model middle washer

6 is elasticity ratchet-like projectioies among the figure, the 7th, and solid ratchet-like projection;

Fig. 6 be among Fig. 5 A to view

Fig. 7 be among Fig. 5 B to view

Fig. 8 is the structural representation of nut in the utility model

8 is grooves among the figure

Fig. 9 is the sectional view of Fig. 8

Embodiment

As shown in Figure 1, 2, the utility model is made up of screw 1, packing ring 2, nut 3, and screw 1, packing ring 2, nut 3 are linked in sequence on the attachment hole of freeway guardrail 5 steel plates.Shown in Fig. 3,4, screw 1 root be provided with freeway guardrail 5 on the adaptive outstanding platform 4 in waist hole.Shown in Fig. 5,6,7, packing ring 2 is provided with the elasticity ratchet-like projection 6 that four parts and packing ring 2 bodies break away from towards the one side of nut 3, is provided with two solid ratchet-like projectioies 7 towards the one side of screw 1 head; Shown in Fig. 8,9, nut 3 is provided with the groove 8 that the elasticity ratchet-like projection 6 with packing ring 2 is complementary towards the one side of packing ring 2.

The long side that the outstanding platform 4 of screw 1 root has pair of parallel; Elasticity ratchet-like projection 6, the solid ratchet-like projection 7 on packing ring 2 two sides are equipped with positive rotation direction inclined-plane; Groove 8 on the nut 3 is established the inclined-plane of positive rotation direction.

Using method of the present utility model is: screw 1 (as Fig. 3,4) is loaded in the waist hole of positive 29*19 of guardrail 5, its outstanding platform 4 drops in the waist shaped hole of guardrails 5; Packing ring 2 (as Fig. 5,6,7) is placed at the another side of guardrail 5 and makes the waist hole that places the 29*19 of guardrail 5 towards a pair of solid ratchet-like projection 7 of screw head one side on the bolt 1; The one side that nut 3 (as Fig. 8,9) is established groove 8, corresponding packing ring 2 is established the one side of elasticity ratchet-like projection 6, with instrument nut 3 is screwed to enough clamping forces with respect to screw 1.

This model utility substitutes present freeway guardrail connecting bolt in sum, makes expressway safer, and easy to use and reliable.

When the clamping guardrail is installed, be subjected to nut 3 forward clamping forces the one side of the elasticity ratchet-like projection 6 of packing ring 2 to be squeezed into and be planar end surface as the time spent, nut 3 end faces are subjected to the resilient force of packing ring 2 elasticity ratchet-like projectioies 6, make screw retention.During as reverse demolition in the protruding groove that advances nut 3 of the elasticity ratchet-like of packing ring 2 projection 6 elasticity, can not change during backward rotation in the solid ratchet-like projection 7 of packing ring 2 another sides and the guardrail 5 waist holes, so design is to reach antitheft locking purpose.

Claims

1. antitheft chek bolt is made up of screw, packing ring, nut, and screw, packing ring, nut are linked in sequence on the attachment hole of freeway guardrail steel plate, it is characterized in that, the screw root be provided with freeway guardrail on the adaptive outstanding platform in waist hole; Packing ring is provided with the elasticity ratchet-like projection that four parts and spacer ring body break away from towards the one side of nut, is provided with two solid ratchet-like projectioies towards the one side of screw head; Nut is provided with the groove that the elasticity ratchet-like projection with packing ring is complementary towards the one side of packing ring.

2. antitheft chek bolt according to claim 1 is characterized in that the outstanding platform of screw root has the long side of pair of parallel; Elasticity ratchet-like projection, the solid ratchet-like projection on packing ring two sides are equipped with positive rotation direction inclined-plane; Groove on the nut is established the inclined-plane of positive rotation direction.