CN214998724U

CN214998724U - Wear-resisting type bolt

Info

Publication number: CN214998724U
Application number: CN202023266391.1U
Authority: CN
Inventors: 王秋月
Original assignee: Jiangsu Ruiqiang Fastener Co ltd
Current assignee: Jiangsu Ruiqiang Fastener Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-12-03
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses a wear-resisting type bolt, concretely relates to bolt field, including screw rod body, nut and interior formula nut that sinks, interior hexagonal thread groove has been seted up to the top surface of nut, and the cap has been dismantled to cup joints in the outside of nut, and the top surface fixed mounting that can dismantle the cap inner chamber has the inner gearing to the piece, and the inner gearing supports the outside of piece and the inboard interference fit in interior hexagonal thread groove, and protection zinc post is installed in the bottom embedding of screw rod body, and the bottom fixedly connected with of protection zinc post protects the film, and a plurality of dismantlements are seted up on the surface of interior formula nut and are nibbled the mouth. Above-mentioned scheme, this bolt construction protects nut and interior formula nut through the nut structure that can dismantle block and interior formula installation respectively, utilizes can dismantle the removable cap structure of changing and can dismantle the block structure with the screw rod body protection in inside isolated external environment corruption and the cavitation erosion and wear influence, can still can dismantle after nut and interior formula nut receive external wear, improves this bolt construction's wear-resisting effect.

Description

Wear-resisting type bolt

Technical Field

The utility model relates to a bolt technical field, more specifically say, the utility model specifically is a wear-resisting type bolt.

Background

The existing bolt is mainly widely used for connecting workpieces with different structures, a cylindrical threaded fastener for the bolt and a matched nut is a fastener consisting of a head part and a screw (a cylinder with external threads), needs to be matched with the nut and is used for fastening and connecting two parts with through holes, and the application market of the bolt is wider along with the continuous improvement of science and technology.

However, the existing bolt is simple in structure and mainly formed by casting, and the bolt is required to have corresponding protective performance in some special mercury liquid scenes or special instruments, for example, when the bolt is used for an overflowing part on a hydraulic turbine set or a hydraulic unit, the groove of the bolt head can undoubtedly form a cavitation phenomenon due to the scouring action of water flow, so that the bolt head is abraded and damaged, the service life of the surface of the overflowing part of the hydraulic unit is shortened, the running efficiency is reduced, the leakage amount is increased, and the economy, safety and stability of power generation and power supply are directly influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides a wear-resisting type bolt protects nut and interior formula nut through the nut structure that can dismantle block and interior formula installation, utilizes can dismantle the change formula and can dismantle the block structure and protect the screw rod body in inside isolated external environment corruption and the cavitation erosion and wear influence to solve the problem that proposes in the above-mentioned background art.

For realizing the above-mentioned purpose, the utility model provides a following technical scheme, a wear-resisting type bolt, including screw rod body, nut and interior formula nut that sinks, screw rod body and nut casting shaping structure as an organic whole, interior hexagonal thread groove has been seted up to the top surface of nut, the outside of nut can be dismantled and cup jointed and can be dismantled the block, the top surface fixed mounting that can dismantle the block inner chamber has the inner gearing to support the piece, the inner gearing supports the shape size and the interior hexagonal thread groove looks adaptation of piece, the inner gearing supports the outside of piece and the inboard interference fit in interior hexagonal thread groove, the protection zinc post is installed in the bottom embedding of screw rod body, the bottom fixedly connected with protection film of protection zinc post, a plurality of dismantlements nibble mouthful have been seted up on the surface of interior formula nut that sinks, and a plurality of dismantlement nibble mouthful is circumferencial direction evenly distributed in the surface of interior formula nut that sinks.

Preferably, the screw body, the nut and the internally-sunk nut are nodular cast iron components, the screw body is matched with the internal thread of the internally-sunk nut, and the surfaces of the screw body and the internally-sunk nut are subjected to hardening treatment.

Preferably, the inward sinking nut is of a cylindrical structure, and the outer surface of the inward sinking nut is of a smooth surface structure.

Preferably, the detachable cap is made of PA nylon or POM polyformaldehyde material, and the outer side of the detachable cap is of a smooth surface structure.

Preferably, the week side embedding of interior meshing support piece is installed a plurality of elasticity and is the circumferencial direction evenly distributed, elasticity support piece is the spring lever structure, the tip that elasticity supported the piece is equipped with anti-skidding line, the tip that elasticity supported the piece and the inner wall looks butt of interior hexagonal thread groove.

Preferably, the protection zinc column and the protection bottom sheet are of an integrally formed structure, and a Teflon coating is electroplated on the outer side of the screw body.

The utility model discloses a technological effect and advantage:

1. in the scheme, the nut cap and the internally-sunk nut are protected by the bolt structure through the detachable cap and the internally-sunk mounted nut structure respectively, the screw body is protected inside by the detachable and replaceable detachable cap structure to isolate the influence of corrosion of the external environment and cavitation abrasion, and the nut cap and the internally-sunk nut can still be detached after being worn by the external environment through the internal hexagonal thread groove and the detachable meshing structure on the surfaces of the nut cap and the internally-sunk nut, so that the wear-resisting effect of the bolt structure is improved;

2. in the above scheme, the bottom of screw rod body is through embedding installation protection film and protection zinc column structure, utilizes the stronger zinc metal of reducibility as the protective pole, links to each other with the bolt of being protected and constitutes galvanic cell, and the stronger metal of reducibility will regard as the negative pole to take place oxidation reaction and consume, and the metal of being protected just can avoid corroding as the positive pole, improves the corrosion resisting property of this bolt structure.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the detachable cap mounting structure of the present invention;

fig. 3 is a schematic structural diagram of the utility model at a in fig. 2;

FIG. 4 is a schematic view of the internal structure of the screw body of the present invention;

fig. 5 is a schematic structural view of the internally sinking nut of the present invention.

The reference signs are:

1. a screw body; 2. a nut; 3. an inwardly sunk nut; 4. a protective bottom sheet; 5. the cap can be disassembled; 6. an inner engagement piece; 7. an elastic ejecting member; 8. an inner hexagonal screw groove; 9. a Teflon coating; 10. disassembling the meshing port; 11. and (5) protecting the zinc column.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model provides a wear-resistant bolt as shown in the attached drawings 1 to 5, which comprises a screw body 1, a nut 2 and an inner sinking nut 3, wherein the screw body 1 and the nut 2 are of an integral casting structure, the top surface of the nut 2 is provided with an inner hexagonal thread groove 8, the outer side of the nut 2 is detachably sleeved with a detachable cap 5, the top surface of the inner cavity of the detachable cap 5 is fixedly provided with an inner meshing resisting sheet 6, the shape and the size of the inner meshing resisting sheet 6 are matched with the inner hexagonal thread groove 8, the outer side of the inner meshing resisting sheet 6 is in interference fit with the inner side of the inner hexagonal thread groove 8, the bottom end of the screw body 1 is embedded with a protective zinc column 11, the bottom end of the protective zinc column 11 is fixedly connected with a protective bottom sheet 4, the surface of the inner sinking nut 3 is provided with a plurality of detachable meshing openings 10, the plurality of detachable meshing openings 10 are uniformly distributed on the surface of the inner sinking nut 3 in the circumferential direction, a plurality of elastic ejecting pieces 7 are embedded in the circumferential side of the inner meshing resisting sheet 6 and are uniformly distributed in the circumferential direction, the elastic propping-out piece 7 is of a spring rod structure, the end part of the elastic propping-out piece 7 is provided with anti-skidding threads, and the end part of the elastic propping-out piece 7 is propped against the inner wall of the inner hexagonal screw groove 8.

In this embodiment, the screw body 1, the nut 2 and the internally-sunk nut 3 are made of nodular cast iron, the screw body 1 is matched with the internal thread of the internally-sunk nut 3, and the surfaces of the screw body 1 and the internally-sunk nut 3 are hardened, so that the structural strength of the bolt is improved, and the wear resistance of the structure of the bare bolt is improved by hardening.

In this embodiment, the internally sunk nut 3 is a cylindrical structure, the outer surface of the internally sunk nut 3 is a smooth surface structure, the detachable cap 5 is made of PA nylon or POM polyoxymethylene material, and the outer side of the detachable cap 5 is a smooth surface structure.

Specifically, utilize the circular slip face in sunken formula nut 3 and the removable cap 5 outside to reduce the erosive wear in the cavitation erosion environment, the resistant model ability of the removable cap 5 low cost of PA nylon or POM polyformaldehyde material is high, can dismantle the change and carry out permanent protection to bolt structure.

In this embodiment, the protective zinc column 11 and the protective bottom sheet 4 are of an integrally formed structure, and the outer side of the screw body 1 is electroplated with the teflon coating 9.

Specifically, the zinc metal with strong reducibility is used as a protective electrode of the bolt, the metal with strong reducibility is used as a negative electrode to be consumed due to oxidation reaction, corrosion of the bolt is avoided, the bolt is protected from corrosion, and the Teflon coating 9 can further protect the bolt.

The working process of the utility model is as follows:

this bolt is after the installation is accomplished, will dismantle cap 5 and cup joint in the outside of nut 2, support out 7 and the butt of interior hexagonal thread groove 8 inner wall through the internal gearing and support piece 6 and elasticity and can dismantle the fixed of cap 5, make can dismantle cap 5 and tightly cup joint in the surface of nut 2 and prevent to drop, protection through dismantling cap 5 makes nut 2 avoid external cavitation erosion and wear, in water liquid or humid environment, utilize the stronger zinc metal of reducibility as the protection utmost point, link to each other with the bolt of being protected and constitute the primary cell, the stronger metal of reducibility will regard as the negative pole to take place oxidation reaction and consume, the metal of being protected just can avoid corroding as the positive pole, carry out anticorrosive protection to the bolt.

According to the scheme, the bolt structure protects the nut 2 and the internally-sunk nut 3 through the detachable cap 5 and the internally-sunk mounted nut structure respectively, the screw body 1 is protected inside by the detachable replaceable detachable cap 5 structure to isolate the influence of corrosion of the external environment and cavitation abrasion, and the nut 2 and the internally-sunk nut 3 can still be detached after being worn by the external environment through the structures of the internal hexagonal thread groove 8 and the detachable engaging opening 10 on the surfaces of the nut 2 and the internally-sunk nut 3, so that the wear-resisting effect of the bolt structure is improved; in addition, the bottom end of the screw body 1 is embedded with a protective bottom sheet 4 and a protective zinc column 11 structure, so that the corrosion resistance of the bolt structure is improved.

Finally, it should be noted that, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate relative positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed;

secondly, in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to common designs, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

finally, the above description is only a preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The wear-resistant bolt comprises a screw body (1), a nut (2) and an inward-sinking nut (3), wherein the screw body (1) and the nut (2) are of an integrally cast structure, and is characterized in that the top surface of the nut (2) is provided with an inner hexagonal thread groove (8), the outer side of the nut (2) is detachably sleeved with a detachable cap (5), the top surface of the inner cavity of the detachable cap (5) is fixedly provided with an inner meshing resisting sheet (6), the shape and the size of the inner meshing resisting sheet (6) are matched with the inner hexagonal thread groove (8), the outer side of the inner meshing resisting sheet (6) is in interference fit with the inner side of the inner hexagonal thread groove (8), a protective zinc column (11) is embedded into the bottom end of the screw body (1), the bottom end of the protective zinc column (11) is fixedly connected with a protective bottom sheet (4), the surface of the inward-sinking nut (3) is provided with a plurality of detachable meshing openings (10), a plurality of the disassembly engaging openings (10) are uniformly distributed on the surface of the inward-sinking nut (3) in the circumferential direction.

2. A wear-resistant bolt according to claim 1, characterized in that the bolt body (1), the nut (2) and the internally-sunk nut (3) are made of nodular cast iron, the bolt body (1) is matched with the internal thread of the internally-sunk nut (3), and the surfaces of the bolt body (1) and the internally-sunk nut (3) are hardened.

3. A wear-resistant bolt according to claim 1, characterized in that the internally sunk nut (3) is of cylindrical configuration and the external surface of the internally sunk nut (3) is of smooth plain configuration.

4. A wear-resistant bolt according to claim 1, characterized in that the removable cap (5) is a member of PA nylon or POM polyoxymethylene, and the outside of the removable cap (5) is of smooth finish.

5. A wear-resistant bolt according to claim 1, wherein a plurality of elastic protruding members (7) are embedded and installed on the periphery of the inner engagement protruding piece (6) and are uniformly distributed in the circumferential direction, the elastic protruding members (7) are of a spring rod structure, the end of each elastic protruding member (7) is provided with an anti-slip thread, and the end of each elastic protruding member (7) abuts against the inner wall of the inner hexagonal thread groove (8).

6. A wear-resistant bolt according to claim 1 characterized in that the protective zinc column (11) and the protective base sheet (4) are of an integral structure, and the outer side of the screw body (1) is plated with a teflon coating (9).