CN216867261U

CN216867261U - Locking bolt

Info

Publication number: CN216867261U
Application number: CN202220181113.6U
Authority: CN
Inventors: 陆优明
Original assignee: Shanghai Qunli Fastener Manufacturing Co ltd
Current assignee: Shanghai Qunli Fastener Manufacturing Co ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-07-01
Anticipated expiration: 2032-01-24

Abstract

The application relates to the technical field of fasteners and discloses a locking bolt, which comprises a screw rod, one end of the screw rod is fixed with a tight end piece for supporting a tight gasket, the tight end piece is kept away from one side of the screw rod is integrally fixed with a cylindrical bolt head, and an insertion hole for inserting a rotating tool is formed in the outer wall of the cylindrical bolt head. This application has the effect that improves the tightness of bolt after screwing.

Description

Locking bolt

Technical Field

The application relates to the technical field of fasteners, in particular to a locking bolt.

Background

Bolts are fasteners that connect mechanical structures together and secure the associated joint by engaging threads on the bolts.

The existing bolt comprises a screw rod with a full thread section, wherein a cylindrical bolt head is integrally fixed at one end of the screw rod, the cylindrical bolt head is rotated by the bolt when the bolt is used, and a mechanical structure is connected together through thread matching.

In view of the above-mentioned related technologies, the inventor believes that most machines use bolts that need to be fully tightened, and that a cylindrical bolt head is inconvenient to use a tool to tighten the bolt, so that the bolt cannot be fully tightened, and the mechanical structure cannot be completely sealed.

SUMMERY OF THE UTILITY MODEL

In order to improve the tightness of bolt after screwing, this application provides a locking bolt.

The application provides a locking bolt adopts following technical scheme:

the locking bolt comprises a screw rod, wherein one end of the screw rod is fixed with a tightly supporting end piece used for tightly supporting a gasket, a cylindrical bolt head is integrally fixed on one side of the tightly supporting end piece far away from the screw rod, and an insertion hole used for inserting a rotating tool is formed in the outer wall of the cylindrical bolt head.

By adopting the technical scheme, the round stick tool with the diameter smaller than that of the inserting hole is inserted into the inserting hole, and the bolt is rotated, so that the abutting end piece abuts against the connecting surface; by adopting the design, the cylindrical bolt can be screwed by using a tool more conveniently, the fastening performance of the bolt is improved, and the sealing performance of the bolt connection machine is improved.

Preferably, the outer wall of the cylindrical bolt head is provided with a plurality of anti-slip grooves in a crossed manner for increasing the surface friction.

Through adopting above-mentioned technical scheme, use the convenient cylindric bolt head of rotation that anti-skidding groove can be more to take place to skid when having avoided using hand to rotate the bolt, improved the convenience with the bolt screw in.

Preferably, the inserting hole is formed along the radial direction of the cylindrical bolt head in a penetrating mode, and chamfers convenient for inserting tools are formed in openings at two ends of the cylindrical bolt head.

Through adopting above-mentioned technical scheme, through using the chamfer, can make more accurate the inserting the spliced eye of round rod instrument to the convenience in round rod instrument inserting the spliced eye has been improved.

Preferably, one side of the abutting end piece close to the screw rod is integrally fixed with a plurality of self-locking teeth for preventing the cylindrical bolt head from loosening.

Through adopting above-mentioned technical scheme, through the surface contact of self-locking tooth and junction and support tightly to can avoid the bolt that screws to appear becoming flexible and even droing, can make the bolt keep high fastening degree always, thereby improved the leakproofness of bolted connection machinery.

Preferably, a screwing section for matching with a spanner to rotate is integrally fixed between the abutting end piece and the cylindrical bolt head.

Through adopting above-mentioned technical scheme, use to twist the section and can appear damaged unable round bar and install when dismantling in the inserting groove, twist the section through using the spanner rotation to the installation that makes the bolt has the commonality with the dismantlement, ensures to use convenience that can be more when the bolt uses.

Preferably, a sealing ring for increasing the sealing performance of the abutting end piece is integrally fixed on one side of the abutting end piece, which is far away from the screwing section.

By adopting the technical scheme, under the same pressure, the contact area between the abutting end piece and the machine is reduced, and the pressure intensity of the abutting end piece at the contact position can be improved, so that the contact area is reduced by using the sealing ring, and the sealing property of the bolt can be improved.

Preferably, the sealing ring is provided with a plurality of sealing rings, and the plurality of sealing rings are coaxially distributed on the peripheral side of the screw rod.

By adopting the technical scheme, the contact area between the abutting end piece and the mechanical surface can be reduced by arranging the plurality of coaxially arranged sealing rings, so that the sealing performance of the bolt is further improved.

Preferably, a reinforcing rib is integrally fixed between the abutting end piece and the screw rod in the circumferential direction, and the thickness of the reinforcing rib gradually increases along the axial direction close to the screw rod.

Through adopting above-mentioned technical scheme, use the strengthening rib can increase and support the joint strength between tight end piece and the spliced pole to can bear higher moment of flexure by the screw rod, improve the tightness of bolt.

In summary, the present application includes at least one of the following beneficial technical effects:

by using the inserting hole, a tool can be inserted into the inserting hole, so that the cylindrical bolt head can be rotated, the bolt can be screwed better, and the fastening degree of the bolt is improved;

the anti-slip groove can prevent the cylindrical bolt head from slipping when being rotated by hands, so that the bolt can be rotated by hands more tightly, and the convenience of using the bolt is improved;

the self-locking teeth are used, so that the abutting end pieces are not easy to back up after abutting against the surface of the joint, the problem of looseness of the bolt is avoided, the bolt can keep high firmness, and the sealing performance of a mechanical structure of bolt connection is improved.

Drawings

Fig. 1 is a schematic structural view of a lock bolt according to embodiment 1 of the present application.

Fig. 2 is a sectional view of a lock bolt according to embodiment 1 of the present application.

Fig. 3 is a schematic structural view of a lock bolt according to embodiment 2 of the present application.

Fig. 4 is a sectional view of a lock bolt according to embodiment 3 of the present application.

Reference numerals: 1. a cylindrical bolt head; 2. an anti-slip groove; 3. inserting holes; 4. chamfering; 5. abutting the end piece; 6. a screw; 61. connecting columns; 62. a stud; 7. self-locking teeth; 8. a seal ring; 9. reinforcing ribs; 10. screwing the section.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a locking bolt.

Example 1:

referring to fig. 1 and 2, a locking bolt comprises a screw rod 6, a tightly-abutting end piece 5 for abutting against a joint is integrally fixed at one end of the screw rod 6, the tightly-abutting end piece 5 is cylindrical, a cylindrical bolt head 1 is integrally fixed at one side of the tightly-abutting end piece 5 far away from the screw rod 6, the cylindrical bolt head 1 is cylindrical, the diameter of the tightly-abutting end piece 5 is larger than that of the cylindrical bolt head 1, a plurality of anti-slip grooves 2 for preventing the cylindrical bolt head 1 from slipping are crosswise arranged on the outer wall of the cylindrical bolt head 1, the anti-slip grooves 2 are obliquely connected with the upper side and the lower side of the cylindrical bolt head 1, and through the formation of circumference array type, the cylindric bolt head 1 is interior to run through along its radial the grafting hole 3 of seting up the instrument that is used for pegging graft to rotate cylindric bolt head 1, and grafting hole 3 is cylindricly, and cylindric bolt head 1 is seted up chamfer 4 convenient for with the instrument male in the open end of grafting hole 3. By adopting the design, a round stick tool with the radius less than or equal to that of the inserting hole 3 can be inserted into the inserting hole 3, so that the bolt can be rotated more firmly under the action of torque, the fastening performance of the nut is improved, and the mechanical connection of the bolt can be better sealed.

Referring to fig. 1, the screw rod 6 is cylindrical, the screw rod 6 includes a stud 62 fixed with a threaded section, a connecting column 61 with a smooth surface is integrally fixed at one end of the stud 62 close to the abutting end piece 5, the connecting column 61 and the abutting end piece 5 are integrally fixed, and the diameter of the connecting column 61 is equal to that of the stud 62. By adopting the sectional design, the connecting column 61 close to the abutting end piece 5 needs to bear larger torque than the stud 62 far away from the abutting end piece 5, the connecting column 61 with the smooth surface is used, the stress concentration can be effectively avoided, the probability of damage to the screw 6 is reduced, the overall strength of the screw 6 is improved, the bolt can be screwed better, and the fastening performance of the nut is improved.

The implementation principle of the embodiment 1 is as follows: firstly, the bolt is screwed into the machine through the anti-skid groove 2 on the surface, a round stick tool with the diameter less than or equal to that of the inserting hole 3 is inserted into the inserting hole 3, the bolt is screwed by rotating the round stick tool, so that the abutting end piece 5 and the mechanical structure are completely abutted, the screwing of the bolt is completed, and the sealing of the mechanical structure is realized.

Example 2:

referring to fig. 3, a locking bolt is different from embodiment 1 in that one end of a resisting end piece 5 close to a screw 6 is provided with a plurality of self-locking teeth 7 for preventing the bolt from loosening, the cross section of each self-locking tooth 7 is triangular and gradually decreases along the direction close to the screw 6, and the self-locking teeth are formed along the circumferential array of the outer wall of the resisting end piece 5.

The implementation principle of the embodiment 2 is as follows: compared with the embodiment 1, in use, after the bolt is screwed tightly, the plurality of self-locking teeth 7 are abutted against the surface of the joint, so that the problem that the bolt is loosened and even falls off is avoided, and the bolt can be kept well fastened all the time.

Example 3:

referring to fig. 4, a locking bolt is different from embodiment 1 in that a screwing section 10 for rotating with a wrench is integrally fixed on one side of a resisting end piece 5 away from a self-locking tooth 7, and the screwing section 10 is in a regular hexagon shape; a plurality of sealing rings 8 for increasing the sealing performance of the abutting end piece 5 are coaxially and integrally fixed on one side, away from the cylindrical bolt head 1, of the abutting end piece 5, the sealing rings 8 are annular and coaxially distributed on the periphery of the screw 6, the longitudinal section of each sealing block 8 is isosceles trapezoid, and the wall thickness of each sealing ring 8 is gradually reduced along the direction away from the abutting end piece 5; one side of the abutting end piece 5 close to the sealing ring 8 is integrally fixed with a reinforcing rib 9, and the thickness of the reinforcing rib 9 is gradually increased along the axial direction close to the screw 6.

The implementation principle of the embodiment 3 is as follows: compared with the embodiment 1, during the use, can use the round rod to insert and rotate the bolt in the spliced eye 3, also can use the spanner to rotate and twist section 10, thereby the commonality of rotating the bolt has been improved, it is more convenient to make the bolt use, support sealing ring 8 tightly in the connecting surface, when the atress condition is the same, reduce the lifting surface area, the principle that pressure intensity increases has increased the leakproofness of supporting tight end piece 5 in the junction, the intensity of supporting the hookup location of tight end piece 5 and spliced pole 61 has been strengthened through strengthening rib 9, thereby the holistic structural strength of bolt has been improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A locking bolt, characterized in that: the bolt comprises a screw rod (6), wherein one end of the screw rod (6) is fixed with a tight end piece (5) for abutting against a gasket, a cylindrical bolt head (1) is integrally fixed on one side, away from the screw rod (6), of the tight end piece (5), and an inserting hole (3) for inserting a rotating tool is formed in the outer wall of the cylindrical bolt head (1).

2. A locking bolt according to claim 1, characterised in that: the outer wall of the cylindrical bolt head (1) is provided with a plurality of anti-slip grooves (2) in a crossed manner, and the anti-slip grooves are used for increasing the surface friction force.

3. A locking bolt according to claim 1, characterised in that: the inserting hole (3) is formed along the radial direction of the cylindrical bolt head (1), and chamfers (4) convenient for inserting tools are formed at openings at two ends of the cylindrical bolt head (1) of the inserting hole (3).

4. A locking bolt according to claim 1, characterised in that: one side of the abutting end piece (5) close to the screw rod (6) is integrally fixed with a plurality of self-locking teeth (7) for preventing the cylindrical bolt head (1) from loosening.

5. A locking bolt according to claim 1, characterised in that: a screwing section (10) which is used for matching with a spanner to rotate is integrally fixed between the abutting end piece (5) and the cylindrical bolt head (1).

6. A locking bolt according to claim 5, characterised in that: and a sealing ring (8) used for increasing the sealing performance of the abutting end piece (5) is integrally fixed on one side of the abutting end piece (5) far away from the screwing section (10).

7. A locking bolt according to claim 6, characterised in that: the sealing ring (8) is provided with a plurality of, and a plurality of sealing ring (8) coaxial distribution in screw rod (6) week side.

8. A locking bolt according to claim 7, wherein: and reinforcing ribs (9) are integrally fixed between the abutting end piece (5) and the screw (6) in the circumferential direction, and the thickness of each reinforcing rib (9) is gradually increased along the axial direction close to the screw (6).