CN211648733U

CN211648733U - Anti-loosening bolt

Info

Publication number: CN211648733U
Application number: CN202020295591.0U
Authority: CN
Inventors: 谭明偲; 廖守仁; 江礼金
Original assignee: China Metallurgical Construction Engineering Group Co Ltd
Current assignee: China Metallurgical Construction Engineering Group Co Ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-10-09
Anticipated expiration: 2030-03-11

Abstract

The utility model discloses an anti-loosening bolt, including screw and nut, the screw includes screwhead and the screw pole above that, the interval is provided with fixed thread section and lock thread section on the screw pole, the screw of fixed thread section revolves to setting up to opposite with lock thread section's screw, the quantity of nut is two and is fixation nut and lock nut respectively, fixation nut screw-thread fit is on fixed thread section, lock nut screw-thread fit is on lock thread section, the position that just is located on the screw pole between fixation nut and the lock nut still overlaps and is equipped with stop collar I and stop collar II, stop collar I and stop collar II can carry on spacingly to fixation nut and lock nut respectively, can connect so that stop collar I and stop collar II butt respectively on fixation nut and lock nut through the screw rod between stop collar I and the stop collar II. The utility model discloses simple structure, convenience simple to use guarantees bolted connection's steadiness to can also used repeatedly.

Description

Anti-loosening bolt

Technical Field

The utility model relates to a bolt, concretely relates to locking bolt that moves.

Background

A bolt is a common fastener used to fasten two mechanical parts with a through hole. If the bolt is screwed out, the two parts can be separated, so that the bolt connection belongs to detachable connection and is widely applied to the fields of plate fastening, equipment assembly, part connection and the like. When mechanical equipment moves, mechanical vibration is not avoided, long-term mechanical vibration leads to the bolt to rock, leads to the nut not hard up for the fastening effect variation of bolt has influenced mechanical equipment's working property and stability, and the phenomenon that the screw hole was deviate from to the bolt can take place in addition, thereby causes mechanical failure.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a locking bolt that moves that convenience simple to use, stability are good.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a locking bolt comprises a bolt and a nut, wherein the bolt comprises a screw head and a screw rod arranged on the screw head, a fixed thread section and a locking thread section are arranged on the screw rod at intervals along the direction of the central line of the screw rod respectively, the fixed thread section is positioned close to the position of the screw head, the thread turning direction of the fixed thread section is opposite to the thread turning direction of the locking thread section, the number of the nuts is two, namely, the fixed nut and the locking nut respectively, the fixed nut is in thread fit on the fixed thread section, the locking nut is in thread fit on the locking thread section, the distance length between the fixed thread section and the locking thread section is larger than the thickness of the fixed nut, a position on the screw rod between the fixed nut and the locking nut is further sleeved with a limiting sleeve I and a limiting sleeve II, the distance length between the fixed nut and the locking nut is larger than the sum of the lengths of the limiting sleeve I and, the limiting sleeve II is close to the locking nut, the limiting sleeve I and the limiting sleeve II can be respectively in sliding fit with the screw rod along the central line direction of the screw rod, a limiting concave hole I which is arranged along the same central line as the limiting sleeve I is concavely arranged on the end surface of one end of the limiting sleeve I facing the fixing nut, the cross section of the limiting concave hole I is consistent with that of the fixing nut, the depth of the limiting concave hole I is smaller than that of the fixing nut, the fixing nut extends into the limiting concave hole I, the limiting concave hole I can limit the rotation of the fixing nut along the central line direction of the fixing nut, a limiting concave hole II which is arranged along the same central line as the limiting sleeve II is concavely arranged on the end surface of one end of the limiting sleeve II facing the locking nut, the cross section of the limiting concave hole II is consistent with that of the locking nut, the depth of the limiting concave hole II is smaller than that of the locking nut, the locking nut extends into, the cover of stop collar I is provided with a plurality of free bearings around the even interval of its central line direction on one's body, be connected with connecting screw through the hinge is articulated on the free bearing, the central line of stop collar I is located connecting screw around hinge pivoted rotation plane, the cover of stop collar II is provided with a plurality of cassettes around the even interval of its central line direction on one's body, the quantity of cassette is unanimous with the quantity of free bearing, set up the bayonet socket that can make connecting screw's pole body card go into on the cassette and keep away from one side of stop collar II, connecting screw's pole body card is gone into in the bayonet socket, the screw-thread fit has coupling nut on the connecting screw and the pole body that is located between free bearing and the cassette, the coupling nut butt is on its corresponding cassette so that stop collar I and stop collar II butt respectively on fixation nut and lock nut.

In the utility model, when in use, the fixing nut is firstly screwed through the part to be fixed by a screw, then the fixing nut is screwed, the fixing nut firstly passes through the locking thread section and then is screwed on the fixing thread section to fix the part to be fixed, then the screw rod is sleeved with the spacing sleeve I, the spacing concave hole I on the spacing sleeve I faces the fixing nut and is sleeved on the fixing nut by the spacing concave hole I, then the screw rod is sleeved with the spacing sleeve II, the spacing concave hole II on the spacing sleeve II faces to one side far away from the spacing sleeve I, then the locking nut is screwed on the locking thread section, the position of the locking nut is adjusted to be corresponding to the spacing concave hole II, the sliding spacing sleeve II is sleeved on the locking nut by the spacing concave hole II, the spacing sleeve II is rotated again to enable the clamping seat on the spacing sleeve to be corresponding to each connecting screw rod, the connecting screw rod is rotated to enable the rod, then the connecting nut is screwed to enable the connecting nut to be abutted against the clamping seat, and the limiting sleeve I and the limiting sleeve II are respectively pressed on the fixing nut and the locking nut through the extrusion of the connecting nut to the clamping seat, so that the fixing nut and the locking nut are connected into a whole. Because the thread turning directions of the fixed thread section and the locking thread section are opposite, the fixed nut and the locking nut are turned towards the same direction and move towards opposite and opposite directions respectively, so that the fixed nut and the locking nut form a mutually locking structure, and the looseness of the fixed nut is avoided.

As optimization, a layer of elastic rubber is adhered to the hole bottom surfaces of the limiting concave hole I and the limiting concave hole II, and a plurality of salient points are arranged on the surface of the elastic rubber in a protruding mode. The fixing nut and the locking nut are well pressed, and the stability is improved.

Preferably, the hinge shaft is sleeved with a torsion spring, and the torsion spring can provide spring force for the connection screw rod to rotate towards the direction of the locking nut. The connecting screw rod is prevented from being pulled out of the opening.

Preferably, a rubber gasket is sleeved on the rod body which is positioned between the connecting nut and the clamping seat and on the connecting screw rod, a rubber convex block is convexly formed on the side surface of one side of the rubber gasket corresponding to the clamping seat, and when the connecting nut presses the rubber gasket on the clamping seat, the rubber convex block can be arranged at the opening of the clamping seat to seal the connecting screw rod and the rod body positioned at the clamping seat in the clamping seat. The connecting screw rod is prevented from being pulled out of the opening.

To sum up, the beneficial effects of the utility model reside in that: the utility model discloses simple structure, convenience simple to use guarantees bolted connection's steadiness to can also used repeatedly.

Drawings

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the anti-loosening bolt in this embodiment includes a bolt and a nut, the bolt includes a bolt head 1 and a bolt rod 2 thereon, the bolt rod 2 is respectively provided with a fixed thread section and a locking thread section at intervals along a central line direction thereof, the fixed thread section is located at a position close to the bolt head 1, a thread turning direction of the fixed thread section is opposite to a thread turning direction of the locking thread section, the number of the nuts is two, and the nuts are respectively a fixed nut 3 and a locking nut 4, the fixed nut 3 is in thread fit on the fixed thread section, the locking nut 4 is in thread fit on the locking thread section, a distance length between the fixed thread section and the locking thread section is greater than a thickness of the fixed nut 3, a position on the bolt rod 2 and between the fixed nut 3 and the locking nut 4 is further sleeved with a stop collar i 5 and a stop collar ii 6, a distance length between the fixed nut 3 and the locking nut 4 is greater than a sum of lengths of the stop collar, the limiting sleeve I5 is close to the fixed nut 3, the limiting sleeve II 6 is close to the locking nut 4, the limiting sleeve I5 and the limiting sleeve II 6 can be in sliding fit with the screw rod 2 along the direction of the central line of the screw rod 2 respectively, a limiting concave hole I which is arranged along the same central line as the limiting sleeve I5 is concavely arranged on the end face of the limiting sleeve I5 facing to one end of the fixed nut 3, the cross section of the limiting concave hole I is consistent with that of the fixed nut 3, the depth of the limiting concave hole I is smaller than that of the fixed nut 3, the fixed nut 3 extends into the limiting concave hole I, the limiting concave hole I can limit the rotation of the fixed nut 3 along the direction of the central line thereof, a limiting concave hole II which is arranged along the same central line as the limiting sleeve II 6 is concavely arranged on the end face of the limiting sleeve II 6 facing to one end of the locking nut 4, the cross section of the limiting concave hole II is, the locking nut 4 stretches into the limiting concave hole II, the limiting concave hole II can limit the rotation of the locking nut 4 along the direction of the central line of the limiting nut, a plurality of hinged seats 7 are uniformly arranged on the sleeve body of the limiting sleeve I5 at intervals along the direction of the central line of the limiting sleeve, connecting screws 8 are connected to the hinged seats 7 in a hinged mode through hinged shafts, the central line of the limiting sleeve I5 is located on a rotating plane of the connecting screws 8 rotating around the hinged shafts, a plurality of clamping seats 9 are uniformly arranged on the sleeve body of the limiting sleeve II 6 at intervals along the direction of the central line of the limiting sleeve, the number of the clamping seats 9 is consistent with the number of the hinged seats 7, a clamping opening capable of enabling the rod body of the connecting screws 8 to be clamped in is formed in one side face, away from the limiting sleeve II 6, the rod body of the connecting screws 8 is clamped in the clamping opening, connecting nuts 10 are matched with the threads on the rod body of the connecting screws 8 and located between the hinged seats 7 and the clamping seats 9 in a threaded mode, and the connecting nuts And the locking nut 4.

In this embodiment, the hole bottom surfaces of the limiting concave hole I and the limiting concave hole II are respectively adhered with a layer of elastic rubber, and the surface of the elastic rubber is provided with a plurality of convex points in a protruding manner.

In this embodiment, the hinge shaft is sleeved with a torsion spring, and the torsion spring can provide a spring force for the connection screw rod 8 to move towards the direction of the locking nut 4.

In this specific embodiment, a rubber gasket 11 is sleeved on the shank of the connecting screw rod 8 between the connecting nut 10 and the clamping seat 9, a rubber convex stopper 12 is convexly formed on the side surface of one side of the rubber gasket 11 corresponding to the clamping seat, and when the connecting nut 10 presses the rubber gasket 11 on the clamping seat 9, the rubber convex stopper 12 can be arranged at the opening of the clamping seat to seal the shank of the connecting screw rod 8 at the clamping seat in the clamping seat.

In the specific implementation process, the rolling patterns are fully distributed on the sleeve body of the limiting sleeve I and the limiting sleeve II so as to increase the friction force between the limiting sleeve I and the finger of an operator and facilitate the rotation and the position adjustment.

Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that, while the invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a locking bolt that moves, includes screw and nut, and the screw includes the screw head and the screw pole on it which characterized in that: the screw rod is respectively provided with a fixed thread section and a locking thread section at intervals along the central line direction thereof, the fixed thread section is positioned at a position close to the screw head, the thread turning direction of the fixed thread section is opposite to the thread turning direction of the locking thread section, the number of the nuts is two, and the nuts are respectively provided with a fixed nut and a locking nut, the fixed nut is in thread fit on the fixed thread section, the locking nut is in thread fit on the locking thread section, the distance length between the fixed thread section and the locking thread section is greater than the thickness of the fixed nut, the position on the screw rod between the fixed nut and the locking nut is also sleeved with a limit sleeve I and a limit sleeve II, the distance length between the fixed nut and the locking nut is greater than the sum of the lengths of the limit sleeve I and the limit sleeve II, the limit sleeve I is close to the fixed nut, the limit sleeve II is close to the locking nut, the limit sleeve I and the limit sleeve, the end face, facing the fixing nut, of the limiting sleeve I is concavely provided with a limiting concave hole I which is arranged on the same central line as the limiting sleeve I, the cross section of the limiting concave hole I is consistent with that of the fixing nut, the depth of the limiting concave hole I is smaller than that of the fixing nut, the fixing nut extends into the limiting concave hole I, the limiting concave hole I can limit the rotation of the fixing nut along the direction of the central line of the limiting concave hole I, the end face, facing the locking nut, of the limiting sleeve II is concavely provided with a limiting concave hole II which is arranged on the same central line as the limiting sleeve II, the cross section of the limiting concave hole II is consistent with that of the locking nut, the depth of the limiting concave hole II is smaller than that of the locking nut, the locking nut extends into the limiting concave hole II, the limiting concave hole II can limit the rotation of the locking nut along the direction of the central line of the locking nut, the hinged support is connected with a connecting screw rod through a hinged shaft in a hinged mode, the central line of the limiting sleeve I is located on a rotating plane of the connecting screw rod rotating around the hinged shaft, a plurality of clamping seats are evenly arranged on the sleeve body of the limiting sleeve II around the central line direction at intervals, the number of the clamping seats is consistent with that of the hinged support, a bayonet capable of enabling the rod body of the connecting screw rod to be clamped is arranged on the side face, away from the limiting sleeve II, of the clamping seat, the rod body of the connecting screw rod is clamped into the bayonet, a connecting nut is in threaded fit on the connecting screw rod and located between the hinged support and the clamping seats, and the connecting nut abuts against the corresponding clamping seats to enable the limiting sleeve I and the limiting sleeve II to abut against the fixing nut and the.

2. The anti-loosening bolt according to claim 1, wherein: spacing shrinkage pool I with all paste on the hole bottom surface of spacing shrinkage pool II and have the one deck elasticity rubber, the protruding a plurality of bumps that have on the surface of elasticity rubber.

3. The anti-loosening bolt according to claim 1, wherein: the hinge is sleeved with a torsion spring, and the torsion spring can provide spring force for the connection screw rod to face towards the locking nut to rotate in the direction.

4. The anti-loosening bolt according to claim 1, wherein: the connecting screw is characterized in that a rubber gasket is sleeved on the rod body between the connecting nut and the clamping seat, a rubber convex block is formed on the side face of one side, corresponding to the clamping seat, of the rubber gasket in a protruding mode, and when the connecting nut presses the rubber gasket on the clamping seat, the rubber convex block can be arranged at the opening of the clamping seat to seal the rod body, located at the clamping seat, of the connecting screw in the clamping seat.