CN211778427U

CN211778427U - Double-nut shockproof stacked combination bolt

Info

Publication number: CN211778427U
Application number: CN201921836386.4U
Authority: CN
Inventors: 李翔
Original assignee: Sichuan Aen Aviation Metal Equipment Co ltd
Current assignee: Sichuan Aen Aviation Metal Equipment Co ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-10-27
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses a two nuts's stack combination bolt that takes precautions against earthquakes, which comprises a bolt, the bolt is by the nut, and first screw rod and second screw rod are constituteed, the nut is located first screw rod upside, first screw rod is located second screw rod upside, first screw rod bottom is provided with interior screw rod, interior screw rod sets up as an organic whole with first screw rod, the inside interior screw hole that is provided with in second screw rod upper end, interior screw rod passes through screw thread swivelling joint with interior screw hole, first screw rod upper end position outside cover has the spring, the welding of spring upside is in upper end dish board bottom, the welding of upper end dish board upside is in the nut bottom, the welding of spring bottom is at bottom dish board upside, bottom dish board cover is in first screw rod bottom. The utility model discloses bolt when the installation, the spring receives pressure to produce the shrink, and the bolt is after the installation is accomplished, and the spring will shrink to the limit, and when the organism vibrations, slight extension will take place for the spring, and the bolt after avoiding the installation produces not hard up.

Description

Double-nut shockproof stacked combination bolt

Technical Field

The utility model relates to a bolt equipment technical field specifically is a two nuts's stack combination bolt that takes precautions against earthquakes.

Background

The bolt is a mechanical part and is a cylindrical threaded fastener matched with a nut. 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 screwed off from the bolt, the two parts can be separated, so that the bolt connection belongs to detachable connection, in the actual use process, the types of the bolts are more, the combined bolt is just one type of the bolt, the existing combined bolt has poor damping effect when in use, and is easy to loosen when a machine body is vibrated.

Therefore, the double-nut shockproof overlapping combination bolt is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two nuts's stack composite bolt that takes precautions against earthquakes, the bolt when the installation, the spring will receive pressure and produce the shrink, and the bolt is after the installation is accomplished, and the spring will shrink to the limit, and when the organism vibrations, slight extension will take place for the spring, and the bolt after avoiding the installation produces not hard up to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a two nuts's stack combination bolt that takes precautions against earthquakes, includes the bolt, the bolt comprises nut, first screw rod and second screw rod, the nut is located first screw rod upside, the nut sets up as an organic whole with first screw rod, first screw rod is located second screw rod upside, first screw rod bottom is provided with interior screw rod, interior screw rod sets up as an organic whole with first screw rod, the inside interior screw hole that is provided with in second screw rod upper end, interior screw rod passes through screw thread swivelling joint with interior screw hole, first screw rod upper end position outside cover has the spring, the welding of spring upside is in upper end dish board bottom, the welding of upper end dish board upside is in the nut bottom, the welding of spring bottom is in bottom dish board upside, bottom dish board cover is in first screw rod bottom.

The bolt is used for fixing the organism, and the nut is used for carrying out the centre gripping, and first screw rod is used for using the nut cooperation, and interior screw rod is used for installing inside the inner screw hole, and the second screw rod is used for assembling first screw rod, and the inner screw hole is used for installing the inner screw rod, and the upper end dish board is used for welding with the spring, and the bottom dish board is used for contacting with the spring bottom, and the spring is used for contracting.

Preferably, the bottom end of the inner screw rod is provided with a bending head, and the upper end of the bending head is welded at the bottom end of the inner screw rod.

When the internal screw is installed in the internal screw hole, the bending head is extruded to deform, and the deformed bending head is full of the bottom end of the internal screw hole, so that the first screw and the second screw are not easy to separate.

Preferably, the nut is provided with a hexagon socket on the upper side.

Interior hexagonal hole sets up for the bolt not only can be dismantled through ordinary spanner, can also be dismantled through hexagonal spanner.

Preferably, a soft metal pad is arranged at the bottom end of the bottom end disc plate, and the upper end of the soft metal pad is welded at the bottom end of the bottom end disc plate.

The soft metal pad 13 is soft in texture and can deform when compressed, allowing for increased tightening of the bolt installation.

Preferably, the bottom end of the second screw is provided with a flat head, and the upper end of the flat head is welded at the bottom end of the second screw.

When assembling first screw rod and second screw rod, the flat head makes things convenient for the staff to fix the second screw rod, can improve the equipment speed of first screw rod and second screw rod.

Preferably, the corrosion-resistant layer is arranged on the outer side of the nut, and the corrosion-resistant layer is a chromium-plated layer.

The chromium coating used by the corrosion-resistant layer has good chemical stability, does not act in alkali, sulfide, nitric acid and most of organic acids, has strong corrosion resistance, is used for increasing the corrosion-resistant execution of the screw cap and avoiding the phenomenon of rusting of the screw cap.

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

1. the utility model discloses, when the bolt is installed, the spring will receive pressure to produce the shrink, and after the bolt is installed, the spring will shrink to the limit, and when the organism shakes, the spring will take place slight extension, avoids the bolt after the installation to produce not hard up;

2. the utility model discloses, the chromium coating that the corrosion resistant coating used has good chemical stability, does not take place the effect in alkali, sulphide, nitric acid and most of organic acids and has stronger corrosion resistance, is used for increasing the corrosion resistant execution of nut, avoids the nut to appear rusty phenomenon;

3. the utility model discloses, when assembling first screw rod and second screw rod, the flat head makes things convenient for the staff to fix the second screw rod, can improve the equipment speed of first screw rod and second screw rod.

Drawings

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

FIG. 2 is a schematic view of a first screw structure of the present invention;

fig. 3 is a schematic view of a second screw structure of the present invention.

In the figure: 1. a bolt; 2. a corrosion-resistant layer; 3. a nut; 4. a first screw; 5. an inner screw rod; 6. a second screw; 7. a flat head; 8. an inner threaded hole; 9. an inner hexagonal hole; 10. an upper end dish plate; 11. a bottom end disc plate; 12. a bending head; 13. a soft metal pad; 14. a spring.

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.

Referring to fig. 1-3, the present invention provides a technical solution: a shockproof overlapping combination bolt with two nuts is shown in figures 1-3 and comprises a bolt 1, wherein the bolt 1 is composed of a nut 3, a first screw rod 4 and a second screw rod 6, the nut 3 is positioned on the upper side of the first screw rod 4, the nut 3 and the first screw rod 4 are integrally arranged, the first screw rod 4 is positioned on the upper side of the second screw rod 6, an inner screw rod 5 is arranged at the bottom end of the first screw rod 4, the inner screw rod 5 and the first screw rod 4 are integrally arranged, an inner screw hole 8 is arranged inside the upper end of the second screw rod 6, the inner screw rod 5 and the inner screw hole 8 are in threaded rotary connection, a spring 14 is sleeved outside the upper end position of the first screw rod 4, the upper side of the spring 14 is welded at the bottom end of an upper end disc plate 10, the upper side of the upper end disc plate 10 is welded at the bottom end of the nut 3, the.

Through above-mentioned technical scheme, bolt 1 is used for fixing the organism, and nut 3 is used for carrying out the centre gripping, and first screw rod 4 is used for using the nut cooperation, and interior screw rod 5 is used for installing inside interior screw hole 8, and second screw rod 6 is used for assembling first screw rod 4, and interior screw hole 8 is used for installing interior screw rod 5, and upper end dish board 10 is used for welding with spring 14, and bottom dish board 11 is used for contacting with spring 14 bottom, and spring 14 is used for contracting.

Specifically, as shown in fig. 2, a bending head 12 is disposed at the bottom end of the inner screw 5, and the upper end of the bending head 12 is welded at the bottom end of the inner screw 5.

Through the technical scheme, when the inner screw 5 is installed inside the inner screw hole 8, the bending head 12 is extruded to deform, and the deformed bending head 12 is filled in the bottom end of the inner screw hole 8, so that the first screw 4 and the second screw 6 are not easy to separate.

Specifically, as shown in fig. 2, a hexagon socket 9 is provided on the upper side of the nut 3.

Through above-mentioned technical scheme, interior hexagonal hole 9 sets up for bolt 1 not only can be dismantled through ordinary spanner, can also be dismantled through hexagonal spanner.

Specifically, as shown in fig. 2, a soft metal pad 13 is disposed at the bottom end of the bottom end plate 11, and the upper end of the soft metal pad 13 is welded to the bottom end of the bottom end plate 11.

Through the technical scheme, the soft metal pad 13 is soft in texture and can deform when being pressed, so that the bolt 1 is additionally fastened.

Specifically, as shown in fig. 3, a flat head 7 is arranged at the bottom end of the second screw rod 6, and the upper end of the flat head 7 is welded at the bottom end of the second screw rod 6.

Through the technical scheme, when the first screw rod 4 and the second screw rod 6 are assembled, the flat head 7 facilitates the fixing of the second screw rod 6 by a worker, and the assembling speed of the first screw rod 4 and the second screw rod 6 can be improved.

Specifically, as shown in fig. 1, the corrosion-resistant layer 2 is provided outside the nut 3, and the corrosion-resistant layer 2 is provided as a chromium plating layer.

Through the technical scheme, the chromium coating used by the corrosion-resistant layer 2 has good chemical stability, does not act in alkali, sulfide, nitric acid and most of organic acids, has strong corrosion resistance, is used for increasing the corrosion resistance of the screw cap 3 and avoiding the phenomenon that the screw cap 3 rusts.

The working principle is as follows: during the use, assemble first screw rod 4 and second screw rod 6, when organizing long, inside screw rod 5 of first screw rod 4 bottom inserts the interior screw hole 8 of second screw rod 6 upside, together through screw thread rotary installation between interior screw rod 5 and the interior screw hole 8, first screw rod 4 and the back of second screw rod 6 equipment completion, through cooperating with the nut, install the organism fixedly, bolt 1 when the installation, spring 14 will receive pressure to produce the shrink, bolt 1 is after the installation is accomplished, spring 14 will shrink to the limit, when the organism shakes, slight extension will take place for spring 14, bolt 1 after avoiding installing produces not hard up.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a two nuts's stack assembling bolt that takes precautions against earthquakes which characterized in that: comprises a bolt (1), the bolt (1) is composed of a nut (3), a first screw rod (4) and a second screw rod (6), the nut (3) is positioned at the upper side of the first screw rod (4), the nut (3) and the first screw rod (4) are arranged into a whole, the first screw rod (4) is positioned at the upper side of the second screw rod (6), an inner screw rod (5) is arranged at the bottom end of the first screw rod (4), the inner screw rod (5) and the first screw rod (4) are arranged into a whole, an inner screw hole (8) is arranged inside the upper end of the second screw rod (6), the inner screw rod (5) and the inner screw hole (8) are in threaded rotary connection, a spring (14) is sleeved at the outer side of the upper end of the first screw rod (4), the upper side of the spring (14) is welded at the bottom end of an upper end disc plate (10), and the upper side of the upper end disc plate (10, the bottom end of the spring (14) is welded on the upper side of the bottom end disc plate (11), and the bottom end disc plate (11) is sleeved at the bottom end of the first screw rod (4).

2. A double nut anti-vibration stacked assembling bolt according to claim 1, characterized in that: the bottom end of the inner screw rod (5) is provided with a bending head (12), and the upper end of the bending head (12) is welded at the bottom end of the inner screw rod (5).

3. A double nut anti-vibration stacked assembling bolt according to claim 1, characterized in that: and an inner hexagonal hole (9) is formed in the upper side of the screw cap (3).

4. A double nut anti-vibration stacked assembling bolt according to claim 1, characterized in that: the bottom end of the bottom end disc plate (11) is provided with a soft metal pad (13), and the upper end of the soft metal pad (13) is welded at the bottom end of the bottom end disc plate (11).

5. A double nut anti-vibration stacked assembling bolt according to claim 1, characterized in that: the bottom end of the second screw rod (6) is provided with a flat head (7), and the upper end of the flat head (7) is welded at the bottom end of the second screw rod (6).

6. A double nut anti-vibration stacked assembling bolt according to claim 1, characterized in that: the corrosion-resistant layer (2) is arranged on the outer side of the nut (3), and the corrosion-resistant layer (2) is a chromium-plated layer.