CN212928462U

CN212928462U - Bolt with locking function

Info

Publication number: CN212928462U
Application number: CN202021789529.3U
Authority: CN
Inventors: 陈晓东; 方旭元
Original assignee: Anhui Gulian Fastener Co ltd
Current assignee: Anhui Gulian Fastener Co ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-04-09
Anticipated expiration: 2030-08-25

Abstract

The utility model discloses a bolt with anti-loosening function, which comprises a stud, a nut and a tightening mechanism, wherein the nut is arranged at the top end of the stud, the nut is screwed at the bottom of the stud, and the tightening mechanism is arranged inside the stud; a first pressing plate is arranged at the bottom of the side wall of the nut, a second pressing plate is arranged at the top of the side wall of the nut, first screw holes are formed in the first pressing plate and the second pressing plate, and locking bolts are screwed in the first screw holes; the tight mechanism in top is including pushing up tight bolt and tight round pin in top, and the tight bolt spiro union in top is offered on the lateral wall of pushing up tight bolt from top to bottom to pushing up the inside annular breach that extends of tight bolt gradually, is provided with the pinhole structure on the lateral wall of double-screw bolt, and the pinhole structure is including being no less than two pinholes, pinhole and third screw intercommunication, and the tight round pin in top sets up in the pinhole to the inner of pushing up the tight round pin is located the bottom of annular breach. The utility model discloses improve to the poor problem of current bolt locking performance, the utility model provides high bolt locking performance.

Description

Bolt with locking function

Technical Field

The utility model relates to a bolt technical field especially relates to a bolt with locking function.

Background

Bolt: mechanical parts, cylindrical threaded fasteners fitted with nuts. A fastener consisting of a head part and a screw (a cylinder with external threads) needs to be matched with a nut and is used for fastening and connecting two parts with through holes. This form of connection is known as a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated, so that the bolt connection belongs to detachable connection.

Spare part through bolted connection often can produce violent vibration at the in-process of work, and bolt locking performance among the prior art is poor, along with spare part long-time vibrations, appears not hard up condition between the bolt and the spare part easily, drops even.

To above technical problem, the utility model discloses a bolt with locking function, the utility model has the advantages of improve the locking performance of bolt, the difficult not hard up coming off of bolt.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome prior art not enough, provide a bolt with locking function to the locking performance of bolt is poor among the solution prior art, technical problem such as the easy not hard up drop that becomes flexible, the utility model has the advantages of improve the locking performance of bolt, the difficult not hard up drop of bolt.

The utility model discloses a following technical scheme realizes: the utility model discloses a bolt with anti-loosening function, which comprises a stud, a nut and a tightening mechanism, wherein the nut is fixedly arranged at the top end of the stud, the nut is screwed at the bottom of the stud, and the tightening mechanism is arranged inside the stud; the bottom of the side wall of the screw cap is provided with a first pressing plate outwards, the bottom end of the first pressing plate is flush with the bottom end of the screw cap, the top of the side wall of the screw cap is provided with a second pressing plate outwards, the top end of the second pressing plate is flush with the top end of the screw cap, the first pressing plate and the second pressing plate are provided with first screw holes at intervals, locking bolts are screwed in the first screw holes, the jacking mechanism comprises a jacking bolt and a jacking pin, the middle part of the screw cap is provided with a second screw hole, the middle part of the screw bolt is provided with a third screw hole which is communicated with the second screw hole, the jacking bolt is screwed in the second screw hole and the third screw hole, the top end of the jacking bolt is provided with a tightening groove, the side wall of the jacking bolt is provided with an annular gap, the annular gap gradually extends towards the inside of the jacking bolt from top to bottom, the side wall of the screw bolt is provided, the pinhole communicates with the third screw, and the setting of puller pin is in the pinhole to the inner of puller pin is located the bottom of annular breach, and when the puller pin was tied and is moved locking down gradually, the inner of puller pin was slided to the top of annular breach by the bottom of annular breach, and the pinhole is ejected gradually to the outer end of puller pin.

Further, in order to improve the tight effect in top of the tight mechanism in top, the number of pinhole structure and annular breach equals and all is not less than two, is no less than two annular breach and is no less than two pinhole structure and all sets up and the position is relative from top to bottom at the interval.

Furthermore, in order to accommodate the cap part at the top end of the tightening bolt, the top end of the screw cap is provided with an accommodating groove.

Furthermore, for better screwing the top tightening bolt, the screwing groove is in a shape like a Chinese character 'yi' or a 'cross'.

The utility model has the advantages of it is following: the utility model discloses a bottom outside at the nut lateral wall is provided with first clamp plate, top outside at the nut lateral wall is provided with the second clamp plate, first screw is provided with the interval on first clamp plate and the second clamp plate simultaneously, the spiro union has the lock pin in the first screw, after rethread bolt is connected two spare parts, again respectively through the lock pin with nut respectively with spare part fixed connection, in addition, the inside of bolt still is provided with the puller mechanism, the puller mechanism includes puller bolt and puller pin, the middle part of nut has seted up the second screw, the middle part of double-screw bolt has seted up the third screw, the third screw communicates with the second screw, puller bolt spiro union is in second screw and third screw, the lateral wall of puller bolt has seted up annular breach, the annular breach extends to the inside of puller bolt gradually from top to bottom, be provided with the pinhole structure on the lateral wall of double-screw bolt, the pinhole structure includes around double-screw bolt evenly distributed and transversely set up is no less than two, pinhole and third screw intercommunication, the setting of puller pin is in the pinhole to the inner of puller pin is located the bottom of annular breach, when the puller pin is tied and is moved locking down gradually, the inner of puller pin slides to the top of annular breach by the bottom of annular breach, and the outer end of puller pin is ejecting pinhole gradually, thereby can follow the inside of spare part and carry out the puller to the spare part, thereby has improved the locking performance of bolt, and the difficult not hard up of bolt drops.

Drawings

FIG. 1 is a cross-sectional view of the present invention when the tightening bolt is locked;

FIG. 2 is a cross-sectional view of a stud and nut connection;

FIG. 3 is a sectional view of the nut structure;

FIG. 4 is a cross-sectional view of the knock-up pin;

fig. 5 is a cross-sectional view of the present invention when the tightening bolt is not locked.

In the figure: 1. a stud; 11. a third screw hole; 2. a nut; 21. a first platen; 22. a second screw hole; 23. a containing groove; 3. a nut; 31. a second platen; 4. a jacking mechanism; 41. tightly pushing the bolt; 42. a puller pin; 5. a first screw hole; 6. a locking bolt; 7. screwing down the groove; 8. an annular gap; 9. a pin hole structure; 91. a pin hole; 10. and (4) parts.

Detailed Description

The following embodiments of the present invention are described in detail, and the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments, and in the description of the present invention, words like "front", "back", "left", "again" etc. indicating directions or position relations are only for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.

Example 1

Embodiment 1 discloses a bolt with an anti-loosening function, as shown in fig. 1, including a stud 1, a nut 2, a nut 3 and a tightening mechanism 4, wherein the nut 2 is fixedly installed at the top end of the stud 1, the nut 3 is screwed at the bottom of the stud 1, and the tightening mechanism 4 is arranged inside the stud 1; as shown in fig. 2 and 3, a first pressing plate 21 is arranged on the bottom of the side wall of the nut 2 towards the outside, the bottom end of the first pressing plate 21 is flush with the bottom end of the nut 2, a second pressing plate 31 is arranged on the top of the side wall of the nut 3 towards the outside, the top end of the second pressing plate 31 is flush with the top end of the nut 3, and first screw holes 5 are arranged on the first pressing plate 21 and the second pressing plate 31 at intervals; as shown in fig. 1, 2 and 3, a locking bolt 6 is screwed in the first screw hole 5; as shown in fig. 1, the tightening mechanism 4 includes a tightening bolt 41 and a tightening pin 42; as shown in fig. 2, a second screw hole 22 is formed in the middle of the nut 2, a third screw hole 11 is formed in the middle of the stud 1, and the third screw hole 11 is communicated with the second screw hole 22; as shown in fig. 1 and 2, the tightening bolt 41 is screwed into the second screw hole 22 and the third screw hole 11, the top end of the nut 2 is provided with a receiving groove 23, when the tightening bolt 41 moves downward and is locked, a cap portion at the top end of the tightening bolt 41 can enter the receiving groove 23, the top end of the tightening bolt 41 is provided with a tightening groove 7, and the tightening groove 7 is in a shape of a Chinese character 'yi' or 'cross'; as shown in fig. 4, an annular gap 8 is formed in the side wall of the tightening bolt 41, and the annular gap 8 gradually extends toward the inside of the tightening bolt 41 from top to bottom; as shown in fig. 2, a pin hole structure 9 is arranged on the side wall of the stud 1, the pin hole structure 9 includes at least two pin holes 91 which are uniformly distributed around the stud 1 and transversely arranged, and the pin holes 91 are communicated with the third screw hole 11; as shown in fig. 5, the tightening pin 42 is disposed in the pin hole 91, and the inner end of the tightening pin 42 is located at the bottom of the annular gap 8, when the tightening bolt 41 gradually moves downwards to be locked, as shown in fig. 1 and 5, the inner end of the tightening pin 42 slides from the bottom of the annular gap 8 to the top of the annular gap 8, the outer end of the tightening pin 42 gradually pushes out the pin hole 91, the number of the pin hole structures 9 is equal to that of the annular gap 8, and is not less than two, and the not less than two annular gaps 8 and the not less than two pin hole structures 9 are all arranged at an upper-lower interval and are opposite in position.

The working process of the utility model is as follows: in operation, as shown in fig. 5, the tightening bolt 41 is first screwed into the second screw hole 22 and the third screw hole 11, and the bottom of the annular gap 8 is aligned with the pin hole 91, and then the tightening pin 42 is inserted into the pin hole 91, and the inner end of the tightening pin 42 is positioned at the bottom of the annular gap 8, and the outer end of the tightening pin 42 is inserted into the pin hole 91; then, as shown in fig. 1, two parts 10 are fixedly connected through the matching of the stud 1 and the nut 3, then, a locking bolt 6 is screwed in a first screw hole 5 on the first pressing plate 21 and the second pressing plate 31, the nut 2 and the nut 3 are respectively locked with the parts 10 through the locking bolt 6, at this time, the tightening bolt 41 is screwed through the tightening groove 7, so that the tightening bolt 41 starts to move downwards, the inner end of the tightening pin 42 slides from the bottom of the annular notch 8 to the top of the annular notch 8, the outer end of the tightening pin 42 gradually pushes out the pin hole 91, the tightening pin 42 tightly pushes the parts 10 from the inside of the parts 10, and the anti-loosening performance of the bolt is improved through the matching of the locking bolt 6 and the tightening mechanism 4, and the bolt is not easy to loosen and fall off.

Claims

1. A bolt with a locking function is characterized by comprising a stud, a nut and a jacking mechanism, wherein the nut is fixedly arranged at the top end of the stud, the nut is in threaded connection with the bottom of the stud, and the jacking mechanism is arranged inside the stud;

a first pressing plate is arranged on the bottom of the side wall of the nut in an outward direction, the bottom end of the first pressing plate is flush with the bottom end of the nut, a second pressing plate is arranged on the top of the side wall of the nut in an outward direction, the top end of the second pressing plate is flush with the top end of the nut, first screw holes are formed in the first pressing plate and the second pressing plate at intervals, and locking bolts are screwed in the first screw holes;

the tightening mechanism comprises a tightening bolt and a tightening pin, a second screw hole is formed in the middle of the screw cap, a third screw hole is formed in the middle of the stud, the third screw hole is communicated with the second screw hole, the tightening bolt is screwed in the second screw hole and the third screw hole, a tightening groove is formed in the top end of the tightening bolt, an annular notch is formed in the side wall of the tightening bolt, the annular notch gradually extends towards the inside of the tightening bolt from top to bottom, a pin hole structure is arranged on the side wall of the stud, the pin hole structure comprises at least two pin holes which are uniformly distributed around the stud and transversely arranged, the pin holes are communicated with the third screw hole, the tightening pin is arranged in the pin holes, the inner end of the tightening pin is located at the bottom of the annular notch, and when the tightening bolt gradually moves downwards to be locked, the inner end of the tightening pin slides to the top of the annular notch from the bottom of the annular notch, the outer end of the jacking pin gradually ejects out of the pin hole.

2. The bolt with the anti-loosening function as claimed in claim 1, wherein the number of the pin hole structures and the annular notches is equal to or less than two, and the at least two annular notches and the at least two pin hole structures are arranged at intervals up and down and opposite in position.

3. The anti-loosening bolt according to claim 1, wherein the top end of the nut is provided with a receiving groove.

4. The anti-loosening bolt as defined in claim 1, wherein the tightening slot has a line shape or a cross shape.