CN211370953U

CN211370953U - Anti-follow-up hexagon head bolt

Info

Publication number: CN211370953U
Application number: CN202020037313.5U
Authority: CN
Inventors: 张小刚; 李安国; 于智州; 李涛; 刘志刚; 石金鑫; 郭庆忠
Original assignee: Huadian Weifang Power Generation Co Ltd
Current assignee: Huadian Weifang Power Generation Co Ltd
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2020-08-28
Anticipated expiration: 2030-01-09

Abstract

The utility model relates to a prevent follow-up hexagon head bolt, including hexagon bolt head and threaded rod, the threaded rod is close to hexagon bolt head one end and has one section smooth rod the smooth rod outside is equipped with the flexure strip, and the flexure strip both ends are fixed on smooth rod, and is protruding to smooth rod's outside in the middle of the flexure strip the threaded rod is kept away from hexagon bolt head one end and is set up and prevent follow-up part. The elastic piece is arranged so that when the anti-follow-up bolt penetrates through the bolt hole of the to-be-fastened piece, the anti-follow-up bolt and the to-be-fastened piece are fixed by means of elastic restoring force of the elastic piece, and when the nut is screwed, the bolt is not easy to rotate along with the nut; when the hexagonal bolt head is located the below, the setting of flexure strip is difficult for making and prevents that follow-up bolt from falling down, easy to assemble. The design of the follow-up prevention part effectively solves the follow-up phenomenon caused by the fact that the position of the hexagonal bolt head cannot be fixed by a wrench due to the limitation of the installation position, the space and the like of equipment, and ensures that the to-be-fastened piece obtains enough fastening force.

Description

Anti-follow-up hexagon head bolt

Technical Field

The utility model relates to a bolt, specifically speaking are anti-following hexagon head bolt.

Background

When the fastener is fastened by using the hexagon head bolt, if only the nut is fastened, the bolt can rotate along with the nut, so that the tightening force is insufficient. The conventional method for preventing the bolt from following is to simultaneously fasten the bolt and the nut by two wrenches, but in reality, due to the limitation of the installation position and space of equipment, the hexagonal head position of the bolt can not be braked by the wrench, so that the problem of insufficient fastening force of the fastener is caused, and the safe operation of the equipment is influenced.

Disclosure of Invention

In order to solve the problem, the utility model provides a prevent follow-up hexagon head bolt when twisting the nut and treating the fastener and fasten, the bolt is difficult to rotate along with the nut and guarantees to treat that the fastener obtains sufficient fastening power, and then guarantees the safe operation of equipment.

Including hexagonal bolt head and threaded rod, the threaded rod has one section smooth slide bar, its characterized in that near hexagonal bolt head one end: the outer side of the smooth rod is provided with an elastic sheet, two ends of the elastic sheet are fixed on the smooth rod, the middle of the elastic sheet protrudes towards the outer part of the smooth rod, the maximum diameter of the protruding part is larger than the diameter of a corresponding bolt hole on a to-be-fastened piece, and one end, far away from a hexagonal bolt head, of the threaded rod is provided with an anti-follow-up component.

Preferably, the anti-follow-up component is formed by processing an outer hexagonal structure at the end part of the threaded rod, and the diameter of a circumscribed circle of the outer hexagonal structure is smaller than the inner diameter of the thread of the bolt.

Preferably, the anti-follow-up part is a hexagonal structure machined at the end of the threaded rod.

Preferably, the anti-follow-up component is formed by processing two symmetrical planes at the thread of the end part of the threaded rod, and the two symmetrical planes are parallel to the central axis of the threaded rod.

Preferably, the anti-follow-up component is a through hole arranged at the end part of the threaded rod.

Preferably, the elastic pieces are of bent long strip structures, the number of the elastic pieces is not less than two, and the elastic pieces are uniformly arranged around the circumference direction outside the smooth rod.

Preferably, the elastic piece is a cylindrical structure surrounding the outer side of the smooth rod, and the middle part of the cylindrical structure protrudes outwards.

Drawings

The invention will be further explained with reference to the accompanying drawings, which are simplified schematic drawings and are only schematic illustrations of the basic structure of the invention and do not constitute a limitation of the invention:

FIG. 1 is a block diagram of a first embodiment of an anti-follow-up bolt of the present invention;

FIG. 2 is a view showing a state of the utility model when the nut is engaged with a fastener;

FIG. 3 is a schematic view of an anti-follow up feature of a second embodiment of the present invention;

FIG. 4 is a schematic view of an anti-follow up feature of a third embodiment of the present invention;

FIG. 5 is a left side view of FIG. 4;

fig. 6 is a schematic view of an anti-follow-up member according to a fourth embodiment of the present invention;

in the figure, 1, a hexagonal bolt head, 2, a threaded rod, 3, an elastic sheet, 4, a nut, 5, a to-be-fastened piece, 11, an outer hexagonal structure, 12, an inner hexagonal structure, 13, a fixed plane, 14 and a through hole are shown.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure, as the terms used are used to describe particular embodiments only, and are not intended to limit the exemplary embodiments based on the disclosure.

Fig. 1 shows, the utility model relates to an anti-following bolt, including hexagonal bolt head 1 and threaded rod 2. The upper part of the threaded rod 2 is provided with a smooth rod, the outer side of the smooth rod is provided with an elastic sheet 3, two ends of the elastic sheet 3 are fixed on the smooth rod, the middle of the elastic sheet 3 protrudes to the outer side of the smooth rod, and the maximum diameter of the protruding part is larger than the diameter of a corresponding bolt hole on the fastener 5. The elastic pieces 3 can be of a bent strip-shaped structure, the number of the elastic pieces is not less than two, and the elastic pieces are uniformly arranged on the outer side of the smooth rod in the circumferential direction; the elastic piece 3 can also be a cylindrical structure surrounding the smooth rod, and the middle part of the cylindrical structure protrudes outwards. And an anti-follow-up part of the outer hexagonal structure 11 is arranged at the top end of the lower part of the threaded rod 2.

Example 1: as shown in fig. 2, when the following-up preventing bolt is matched with the nut 4 to fasten the to-be-fastened member 5, the following-up preventing bolt penetrates into a hole of the to-be-fastened member 5, the to-be-fastened member 5 generates an extrusion force to the elastic sheet 3 toward the inside of the bolt, so that the elastic sheet 3 deforms, the elastic restoring force towards the outside of the bolt is generated after the elastic sheet 3 deforms, and the following-up preventing bolt and the to-be-fastened member 5 are fixed by the elastic restoring force of the elastic sheet 3, so that the bolt is not easy to rotate together with the nut 4 when the nut 4 is screwed to fasten the to-be-fastened member 5; use the utility model discloses when the fixed fastener 5 of treating, when hexagonal bolt head 1 was located the below, the setting of flexure strip 3 was difficult for making and is prevented follow-up bolt and fall, easy to assemble. Meanwhile, due to the limitation of the installation position and the space of the equipment in the working process, the position of the hexagonal bolt head 1 can not be fixed by a practical wrench, if only the nut 4 is fastened, the bolt can rotate along with the nut 4, therefore, the anti-follow-up component of the outer hexagonal structure 11 is fixed by the wrench, and then the nut 4 is screwed, so that the bolt can be effectively prevented from rotating along with the nut 4, and the fastener 5 is guaranteed to obtain enough fastening force.

Example 2: on the basis of the embodiment 1, as shown in fig. 3, the anti-follow-up component is an inner hexagonal structure 12, and when the fastener 5 is fastened, an inner hexagonal wrench is used to fix the anti-follow-up component of the inner hexagonal structure 12, and then the nut 4 is screwed, so that the bolt can be effectively prevented from rotating along with the nut 4.

Example 3: on the basis of the embodiment 1, as shown in fig. 4 and 5, the follow-up prevention component is that two symmetrical fixing planes 13 are processed at the thread position of the end part of the threaded rod 2, the two symmetrical fixing planes 13 are parallel to the central axis of the threaded rod 2, when the fastener 5 is fastened, a wrench is used for clamping the fastener on the two fixing planes 13, and then the nut 4 is screwed, so that the bolt can be effectively prevented from rotating along with the nut 4.

Example 4: in addition to the embodiment 1, as shown in fig. 6, the follow-up preventing member is a through hole 14 formed below the threaded rod 2, and when the fastening member 5 is fastened, round steel having a diameter matching the through hole 14 is inserted into the through hole 14, the round steel outside the through hole 14 is held by hand to fix the bolt, and the nut 4 is screwed.

In the utility model, when the elastic sheet 3 is arranged to enable the anti-follow-up bolt to penetrate into the bolt hole of the fastener 5, the anti-follow-up bolt and the fastener 5 are fixed by the elastic restoring force of the elastic sheet 3, therefore, when the nut 4 is screwed to fasten the fastener 5, the bolt is not easy to rotate along with the nut 4; use the utility model discloses when the fixed fastener 5 of treating, when hexagonal bolt head 1 was located the below, the setting of flexure strip 3 was difficult for making and is prevented follow-up bolt and fall, easy to assemble. The design of the follow-up prevention part effectively solves the follow-up phenomenon caused by the fact that the position of the hexagonal bolt head 1 cannot be fixed by a wrench due to the limitation of the installation position, space and the like of the equipment, and ensures that the fastener 5 to be fastened obtains enough fastening force, thereby ensuring the safe operation of the equipment.

In light of the above two preferred embodiments of the present invention, it is clear that various changes and modifications can be made by persons skilled in the art without departing from the scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides an prevent follow-up hexagon head bolt, includes hexagon head bolt and threaded rod, and the threaded rod has one section smooth rod near hexagon head bolt one end, its characterized in that: the outer side of the smooth rod is provided with an elastic sheet, two ends of the elastic sheet are fixed on the smooth rod, the middle of the elastic sheet protrudes towards the outer side of the smooth rod, the maximum diameter of the protruding part is larger than the diameter of a corresponding bolt hole on a to-be-fastened piece, and one end, far away from a hexagonal bolt head, of the threaded rod is provided with an anti-follow-up component.

2. The anti-follow-up hexagon head bolt according to claim 1, characterized in that: the anti-follow-up component is formed by processing an outer hexagonal structure at the end part of the threaded rod, and the diameter of a circumscribed circle of the outer hexagonal structure is smaller than the inner diameter of a thread of the bolt.

3. The anti-follow-up hexagon head bolt according to claim 1, characterized in that: the anti-follow-up component is an inner hexagonal structure processed at the end part of the threaded rod.

4. The anti-follow-up hexagon head bolt according to claim 1, characterized in that: the anti-follow-up component is characterized in that two symmetrical fixing planes are processed at the thread position of the end part of the threaded rod, and the two symmetrical fixing planes are parallel to the central axis of the threaded rod.

5. The anti-follow-up hexagon head bolt according to claim 1, characterized in that: the anti-follow-up component is formed by arranging a through hole at the end part of the threaded rod.

6. An anti-follow-up hexagon head bolt according to any one of claims 1-5, wherein: the elastic pieces are of bent long strip-shaped structures, the number of the elastic pieces is not less than two, and the elastic pieces are uniformly arranged around the circumferential direction outside the smooth rod.

7. An anti-follow-up hexagon head bolt according to any one of claims 1-5, wherein: the elastic piece is a cylindrical structure surrounding the outer side of the smooth rod, and the middle part of the cylindrical structure protrudes outwards.