CN216343301U

CN216343301U - High-reliability ultra-long bolt

Info

Publication number: CN216343301U
Application number: CN202123068459.XU
Authority: CN
Inventors: 姚国燕
Original assignee: Zhejiang Zhonghang Laibao Hardware Manufactory Co ltd
Current assignee: Zhejiang Zhonghang Laibao Hardware Manufactory Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-04-19
Anticipated expiration: 2031-12-08

Abstract

The utility model discloses a high-reliability ultra-long bolt which comprises a nut, wherein the center of the bottom surface of the nut is fixedly connected with the top end of an upper rod body, the bottom end of the upper rod body is coaxially and fixedly connected with the top end of a lower rod body, the diameter of the upper rod body is consistent with that of the lower rod body, the nut, the upper rod body and the lower rod body are of an integrated structure, four reinforcing ribs are uniformly and fixedly connected between the bottom surface of the nut and the outer side wall of the top end of the upper rod body, the cross sections of the reinforcing ribs are triangular, a gasket ring seat is slidably sleeved on the upper rod body, a first sliding hole is vertically formed in the center of the gasket ring seat, the first sliding hole is slidably sleeved on the upper rod body, and four grooves are respectively formed in the top surface of the gasket ring seat corresponding to the positions of the four reinforcing ribs. The gasket ring seat is additionally arranged, the groove is formed in the gasket ring seat and can be clamped at the reinforcing rib, and the upper gasket is placed below the gasket ring seat when the gasket ring seat is used, so that the situation that the upper gasket is deformed due to the fact that the gasket directly contacts the reinforcing rib at the bottom of the nut when the gasket ring seat is installed is avoided.

Description

High-reliability ultra-long bolt

Technical Field

The utility model relates to the technical field of overlong bolts, in particular to an overlong bolt with high reliability.

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 unscrew the nut from the bolt, can make these two parts separate again, so bolted connection belongs to and can dismantle the connection, in-service use, need use the bolt of overlength type, fixes the higher position of thickness, and the overlength bolt can add a plurality of strengthening ribs and consolidate being connected between nut and the bolt body of rod in the intensity of nut department for guaranteeing the structure, and such overlength bolt has following defect when using:

when using, for increase area of contact, reduce pressure prevents not hard up reason, can embolia the packing ring on the bolt, the packing ring can contact the nut bottom surface, and when the atress, the gasket can receive the power of strengthening rib, produces the phenomenon of deformation for the effect of gasket reduces, is unfavorable for the use.

For this reason, we propose a high-reliability ultra-long bolt to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-reliability overlong bolt to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a high-reliability ultra-long bolt comprises a nut, wherein the center of the bottom surface of the nut is fixedly connected with the top end of an upper rod body, the bottom end of the upper rod body is coaxially and fixedly connected with the top end of a lower rod body, the diameter of the upper rod body is consistent with that of the lower rod body, and the nut, the upper rod body and the lower rod body are of an integrated structure;

four reinforcing ribs are uniformly and fixedly connected between the bottom surface of the nut and the outer side wall of the top end of the upper rod body, the cross section of each reinforcing rib is triangular, a gasket ring seat is slidably sleeved on the upper rod body, a first sliding hole is vertically formed in the center of the gasket ring seat, the first sliding hole is slidably sleeved on the upper rod body, four grooves are formed in the top surface of the gasket ring seat corresponding to the positions of the four reinforcing ribs respectively, the four grooves are communicated with the first sliding hole, and the reinforcing ribs are inserted into the grooves.

Preferably, strengthening rib, last body of rod and nut formula structure as an organic whole, the fluting inside wall is rubber construction, fluting and strengthening rib interference fit.

Preferably, the outer side wall of the lower rod body is fixedly connected with an external thread part, and the outer side of the external thread part is fixedly connected with a boronizing layer.

Preferably, the external thread part is in threaded sleeve connection with a nut, a lower gasket is movably sleeved at a position, above the nut, on the lower rod body, a third sliding hole is formed in the center of the lower gasket, and the third sliding hole is in clearance fit with the lower rod body.

Preferably, the upper rod body is movably sleeved with an upper gasket at a position below the gasket ring seat, a second sliding hole is formed in the center of the upper gasket, and the second sliding hole is in clearance fit with the upper rod body.

Compared with the prior art, the utility model has the beneficial effects that:

the gasket ring seat is additionally arranged, the groove is formed in the gasket ring seat and can be clamped at the reinforcing rib, and the upper gasket is placed below the gasket ring seat when the gasket ring seat is used, so that the situation that the upper gasket is deformed due to the fact that the gasket directly contacts the reinforcing rib at the bottom of the nut when the gasket ring seat is installed is avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of an explosive structure according to the present invention;

fig. 3 is a sectional view of the external thread portion of the lower rod body according to the present invention.

In the figure: 1. a nut; 2. a rod body is arranged; 3. a lower rod body; 4. a gasket ring seat; 5. an upper gasket; 6. a nut; 7. a lower gasket; 11. reinforcing ribs; 31. an external threaded portion; 32. a boronizing layer; 41. a first slide hole; 42. grooving; 51. a second slide hole; 71. and a third slide hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1-3, the present invention provides a technical solution: a high-reliability overlong bolt comprises a nut 1, wherein the center of the bottom surface of the nut 1 is fixedly connected with the top end of an upper rod body 2, the bottom end of the upper rod body 2 is coaxially and fixedly connected with the top end of a lower rod body 3, the diameter of the upper rod body 2 is consistent with that of the lower rod body 3, and the nut 1, the upper rod body 2 and the lower rod body 3 are of an integrated structure;

four reinforcing ribs 11 are uniformly and fixedly connected between the bottom surface of a nut 1 and the outer side wall of the top end of an upper rod body 2, the cross section of each reinforcing rib 11 is triangular, a gasket ring seat 4 is slidably sleeved on the upper rod body 2, a first sliding hole 41 is vertically formed in the center of the gasket ring seat 4, the first sliding hole 41 is slidably sleeved on the upper rod body 2, four grooves 42 are respectively formed in the positions, corresponding to the four reinforcing ribs 11, of the top surface of the gasket ring seat 4, the four grooves 42 are communicated with the first sliding hole 41, and the reinforcing ribs 11 are inserted into the grooves 42.

Example 2:

referring to fig. 2, the reinforcing rib 11, the upper rod body 2 and the nut 1 are of an integrated structure, the inner side wall of the slot 42 is of a rubber structure, the slot 42 is in interference fit with the reinforcing rib 11, the gasket ring seat 4 is inserted into the reinforcing rib 11 when the gasket ring seat is used, and the gasket ring seat 4 can be fixed due to the interference fit of the slot 42 and the reinforcing rib 11, so that the gasket ring seat 4 cannot slide freely, and the gasket ring seat is more convenient to use.

Referring to fig. 3, the outer side wall of the lower rod body 3 is fixedly connected with an external thread portion 31, the outer side of the external thread portion 31 is fixedly connected with a boronizing layer 32, and the boronizing layer 32 is formed by infiltrating active boron atoms into the surface of the external thread portion 31 by using a boronizing chemical heat treatment process, so as to improve the higher surface hardness and wear resistance.

Referring to fig. 2, the nut 6 is screwed on the external thread portion 31, the lower washer 7 is movably sleeved on the lower rod 3 above the nut 6, a third sliding hole 71 is formed in the center of the lower washer 7, and the third sliding hole 71 is in clearance fit with the lower rod 3.

Referring to fig. 2, the upper rod body 2 is movably sleeved with an upper pad 5 at a position below the pad ring seat 4, a second sliding hole 51 is formed in the center of the upper pad 5, and the second sliding hole 51 is in clearance fit with the upper rod body 2.

Example 3:

when a workpiece needs to be fixed, the gasket ring seat 4 is sleeved at the top end of the upper rod body 2, the groove 42 is inserted at the reinforcing rib 11 on the bottom surface of the nut 1, the upper gasket 5 is sleeved at the upper rod body 2, then the mounting hole is inserted, the lower gasket 7 is sleeved at the lower rod body 3, and the nut 6 is used for fixing.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high reliability overlength bolt, includes nut (1), its characterized in that:

the center of the bottom surface of the nut (1) is fixedly connected with the top end of an upper rod body (2), the bottom end of the upper rod body (2) is coaxially and fixedly connected with the top end of a lower rod body (3), the diameter of the upper rod body (2) is consistent with that of the lower rod body (3), and the nut (1), the upper rod body (2) and the lower rod body (3) are of an integrated structure;

nut (1) bottom surface and last body of rod (2) top lateral wall between four strengthening ribs (11) of even rigid coupling, strengthening rib (11) cross-section is the triangle-shaped shape, it cup joints gasket ring seat (4) to go up to slide on the body of rod (2), first slide opening (41) are seted up perpendicularly at gasket ring seat (4) center, first slide opening (41) slide and cup joint on last body of rod (2), four fluting (42), four are seted up respectively to gasket ring seat (4) top surface correspondence four strengthening rib (11) positions fluting (42) and first slide opening (41) intercommunication, strengthening rib (11) are pegged graft in fluting (42).

2. A high reliability ultra-long bolt according to claim 1, characterized in that: strengthening rib (11), the body of rod (2) and nut (1) formula structure as an organic whole of going up, fluting (42) inside wall is the rubber construction, fluting (42) and strengthening rib (11) interference fit.

3. A high reliability ultra-long bolt according to claim 1, characterized in that: the outer side wall of the lower rod body (3) is fixedly connected with an external thread part (31), and the outer side of the external thread part (31) is fixedly connected with a boronizing layer (32).

4. A high reliability ultra-long bolt according to claim 3, characterized in that: the nut (6) is sleeved on the outer thread portion (31) in a threaded mode, the lower gasket (7) is movably sleeved on the position, located above the nut (6), of the lower rod body (3), the third sliding hole (71) is formed in the center of the lower gasket (7), and the third sliding hole (71) is in clearance fit with the lower rod body (3).

5. A high reliability ultra-long bolt according to claim 1, characterized in that: an upper gasket (5) is movably sleeved at a position, below the gasket ring seat (4), of the upper rod body (2), a second sliding hole (51) is formed in the center of the upper gasket (5), and the second sliding hole (51) is in clearance fit with the upper rod body (2).