CN216618208U

CN216618208U - Anti-drop anti-loosening adjusting bolt

Info

Publication number: CN216618208U
Application number: CN202123088168.7U
Authority: CN
Inventors: 马合生
Original assignee: Suzhou Thalenda Engine Parts Co ltd
Current assignee: Suzhou Thalenda Engine Parts Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-05-27
Anticipated expiration: 2031-12-09

Abstract

The application provides an anti-drop anti-loosening adjusting bolt belongs to bolt technical field. The anti-drop anti-loose adjusting bolt comprises a bolt body, a nut component and a second nut. The boss is provided with an eccentric hole, the eccentric hole is communicated with the screw hole of the first nut, the bottom of the second nut is provided with a groove, and the groove is movably sleeved at the top of the boss. This anti-drop locking adjusting bolt passes through boss eccentric design, the central skew of a lateral screw rod that drives first nut in receiving crowded process, make the screw thread of first nut and the screw thread of screw rod laminate more, first nut installation is more firm, boss and second nut bottom recess form the wedge structure simultaneously, thereby make second nut and the opposite one side of first nut partial pressure screw rod center, it is more firm to make the second nut installation, there is interact's pressure between first nut top and the second nut bottom contact surface all the time, consequently, can play locking effect.

Description

Anti-drop anti-loosening adjusting bolt

Technical Field

The application relates to the technical field of bolts, in particular to an anti-drop anti-loosening adjusting bolt.

Background

Adjusting bolt is a general fastener, in machinery fields such as boats and ships, motor vehicle, lift, often can use adjusting bolt, in the use, the vibration that equipment produced, situations such as the nut is not screwed up during the installation all can lead to nut and screw rod to be connected badly, and for a long time with the fixed easy activity of object drop, bolted connection in case lax among the mechanical equipment, can cause the bolt to drop and lead to great potential safety hazard, the decline of bolt pretension that relaxes simultaneously leads to bolted connection fatigue life to shorten greatly. Therefore, how to invent the anti-drop and anti-loose adjusting bolt selects proper anti-loose measures in the design to ensure that the bolt is not loosened in the actual use.

SUMMERY OF THE UTILITY MODEL

In order to compensate for the defects, the application provides an anti-drop and anti-loose adjusting bolt, which aims to solve the problem that the adjusting bolt is easy to move and drop in the using process and has great potential safety hazard.

The embodiment of the application provides an anti-drop anti-loose adjusting bolt, including bolt body, nut component and second nut

The bolt body comprises a nut and a screw rod, and the nut and the screw rod are integrally arranged.

The nut component comprises a first nut and a boss, the first nut is sleeved on the screw rod in a threaded manner, the boss is fixedly installed at the top of the first nut, an eccentric hole is formed in the boss and communicated with a screw hole of the first nut, and the internal thread of the eccentric hole is connected with the internal thread of the first nut.

The second nut is in threaded sleeve joint with the screw rod, a groove is formed in the bottom of the second nut, and the groove is movably sleeved on the top of the boss.

In the implementation process, a first nut with a boss at the top and a second bolt with a groove at the bottom are arranged on a screw rod of a bolt body together, after the first nut is arranged in place, the second nut is continuously rotated, so that the groove at the bottom of the second nut extrudes the boss at the top of the first nut, due to the eccentric design of the boss, one side of the first nut is driven to deviate towards the center of the screw rod in the extrusion process, the thread of the first nut is more attached to the thread of the screw rod, the first nut is more firmly installed, meanwhile, the boss and the groove at the bottom of the second nut form a wedge-shaped structure, so that the side, opposite to the first nut, of the second nut deviates towards the center of the screw rod, the second nut is more firmly installed, the contact surface between the top of the first nut and the bottom of the second nut always has interactive pressure, and any one of the first nut and the second nut needs to overcome the friction force between the screwing threads when rotating, even if the external load changes, the pressure between the first nut and the second nut is always kept, so that the anti-loosening effect can be achieved.

In a specific embodiment, the nut has a through hole, and the through hole penetrates through the side wall of the nut.

In the above implementation process, the through hole has been seted up to the nut, and when a plurality of adjusting bolt were installed to the coplanar of equipment, can penetrate the through hole of nut with the steel wire in proper order, establish ties a plurality of adjusting bolt, played the effect of mutual containment.

In a specific embodiment, the top surface of the nut is provided with anti-slip threads.

In the implementation process, the anti-slip lines are arranged at the top of the nut, the friction force between the nut and the contact surface of the equipment is increased by the anti-slip lines, the phenomenon of slipping after the adjusting bolt is installed can be effectively prevented, and the adjusting bolt is convenient to install and detach.

In a specific embodiment, the bolt body further comprises a gasket, and the gasket is movably sleeved on the screw rod.

In the implementation process, the gasket is movably sleeved on the screw rod and arranged between the bottom of the first nut and the equipment, so that the contact area between the first nut and the equipment is increased, and the first nut is effectively prevented from loosening.

In a specific embodiment, two sets of edge lugs are symmetrically arranged on two sides of the gasket, and the edge lugs and the gasket are integrally arranged.

In the implementation process, the two sides of the gasket are provided with the edge lugs, and after the first nut is screwed down, the two groups of edge lugs are respectively bent towards the side surfaces of the first nut and the equipment and are tightly attached to the side surfaces of the first nut and the equipment, so that the first nut can be locked through the edge lugs.

In a specific embodiment, the second nut is provided with a nylon self-locking ring which is embedded at one end of the screw hole of the second nut.

In the implementation process, the screw hole of the second nut is embedded with the nylon self-locking ring, the nylon self-locking ring is in an initial state without an internal thread, the internal thread is carved on the inner wall of the nylon self-locking ring by the thread on the surface of the screw rod in the installation process of the second nut, and the internal thread is high in surface fitting degree with the screw rod, so that the second nut is more stable in installation.

In a specific embodiment, the nylon self-locking ring is disposed with an inner diameter that is less than the disposed diameter of the screw.

In the implementation process, the inner diameter of the nylon self-locking ring is smaller than that of the screw, so that the nylon self-locking ring can be fully contacted with the screw, and the threads on the surface of the screw can be completely embedded into the nylon self-locking ring.

In a specific embodiment, the screw rod further comprises a third nut, the third nut is sleeved on the screw rod in a threaded manner, and the bottom of the third nut is abutted against the top of the second nut.

In the implementation process, the third nut is arranged at the top of the second nut, the third nut and the second nut form an opposite-top anti-loosening structure, and the friction force which needs to be overcome when the second nut rotates is increased, so that the second nut is prevented from loosening.

In a specific embodiment, a limiting groove is formed in the top of the third nut, a limiting hole is formed in the side wall of the screw, a limiting pin is slidably mounted in the limiting groove, and the limiting pin movably penetrates through the limiting hole.

In the implementation process, after the third nut is tightened, the limiting pin is inserted into the limiting groove of the third nut and the limiting hole at the tail part of the screw rod, and the tail part of the limiting pin is pulled open to prevent the third nut and the screw rod from rotating relatively.

In a specific embodiment, the limiting grooves are provided with a plurality of groups, and the plurality of groups of limiting grooves are arranged on the top surface of the third nut in an annular array.

In the implementation process, the surface of the third nut is provided with a plurality of groups of limiting grooves, and the limiting pins can be mounted by selecting proper limiting grooves, so that the situation that the limiting pins cannot be mounted due to the fact that the limiting grooves are not aligned with the limiting holes after the third nut is screwed down is avoided.

Drawings

In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural view of an anti-drop and anti-loose adjusting bolt provided in the embodiment of the present application;

fig. 2 is a schematic structural diagram of a bolt body according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural view of a nut assembly according to an embodiment of the present disclosure;

FIG. 4 is a first perspective view of a second nut provided in accordance with an embodiment of the present application;

FIG. 5 is a second perspective view of a second nut provided in accordance with an embodiment of the present application;

FIG. 6 is a schematic structural view of a third nut according to an embodiment of the present disclosure;

fig. 7 is a second perspective view of the anti-drop and anti-loose adjusting bolt according to the embodiment of the present application.

In the figure: 100-bolt body; 110-screw cap; 111-a via; 112-non-slip pattern; 120-screw rod; 121-a limiting hole; 130-a gasket; 131-a lug; 200-a nut assembly; 210-a first nut; 220-boss; 221-eccentric hole; 300-a second nut; 310-a groove; 320-nylon self-locking ring; 400-a third nut; 410-a limit groove; 420-limit pin.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Referring to fig. 1, the present application provides an anti-drop and anti-loose adjusting bolt, which includes a bolt body 100, a nut assembly 200 and a second nut 300.

Referring to fig. 2, the bolt body 100 includes a nut 110 and a bolt 120, and the nut 110 and the bolt 120 are integrally disposed.

Referring to fig. 3, the nut assembly 200 includes a first nut 210 and a boss 220, the first nut 210 is screwed on the screw rod 120, the boss 220 is fixedly installed on the top of the first nut 210, the boss 220 is provided with an eccentric hole 221, the eccentric hole 221 is communicated with a screw hole of the first nut 210, and an internal thread of the eccentric hole 221 is connected with an internal thread of the first nut 210.

Referring to fig. 4, the second nut 300 is threadedly sleeved on the screw rod 120, the bottom of the second nut 300 is provided with a groove 310, and the groove 310 is movably sleeved on the top of the boss 220.

In other embodiments, the nut 110 is provided with a through hole 111, the through hole 111 penetrates through the side wall of the nut 110, when a plurality of adjusting bolts are installed on the same plane of the equipment, the steel wire can sequentially penetrate through the through holes 111 of the nut 110, and the plurality of adjusting bolts are connected in series to play a role of mutual containment.

In other embodiments, the anti-slip pattern 112 is formed on the top surface of the nut 110, and the anti-slip pattern 112 increases the friction force between the nut 110 and the contact surface of the device, so that the slip phenomenon after the adjustment bolt is installed can be effectively prevented, and the adjustment bolt can be conveniently installed and detached.

In other embodiments, bolt body 100 further includes washer 130, and washer 130 is movably sleeved on screw 120, and washer 130 sets up and increases between first nut 210 bottom and the equipment, and the area of contact between first nut 210 and the equipment effectively prevents first nut 210 from becoming flexible.

In other embodiments, two sets of lugs 131 are symmetrically disposed on two sides of the gasket 130, the lugs 131 and the gasket 130 are integrally disposed, and after the first nut 210 is tightened, the two sets of lugs 131 are respectively bent and attached to the first nut 210 and the side surface of the device, so that the first nut 210 can be locked by the lugs 131.

Referring to fig. 5, the second nut 300 is provided with a nylon self-locking ring 320, the nylon self-locking ring 320 is embedded in one end of a screw hole of the second nut 300, the nylon self-locking ring 320 has no internal thread in an initial state, an internal thread is carved on the inner wall of the nylon self-locking ring 320 by the thread on the surface of the screw rod 120 in the installation process of the second nut 300, and the internal thread is highly attached to the surface of the screw rod 120, so that the second nut 300 is more stably installed.

In other embodiments, the nylon self-locking ring 320 is configured with an inner diameter smaller than the configured diameter of the screw 120, which ensures that the nylon self-locking ring 320 can be in sufficient contact with the screw 120, thereby allowing the threads on the surface of the screw 120 to be fully embedded into the nylon self-locking ring 320.

Referring to fig. 6 and 7, the anti-loosening device further includes a third nut 400, the third nut 400 is sleeved on the screw rod 120 in a threaded manner, the bottom of the third nut 400 is abutted against the top of the second nut 300, and the third nut 400 and the second nut 300 form an anti-loosening structure, so that the friction force to be overcome when the second nut 300 rotates is increased, and the anti-loosening effect is achieved on the second nut 300.

In other embodiments, the top of the third nut 400 is provided with a limiting groove 410, the side wall of the screw rod 120 is provided with a limiting hole 121, a limiting pin 420 is slidably mounted in the limiting groove 410, the limiting pin 420 movably penetrates through the limiting hole 121, after the third nut 400 is tightened, the limiting pin 420 is inserted into the limiting groove 410 of the third nut 400 and the limiting hole 121 at the tail of the screw rod 120, and the tail of the limiting pin 420 is pulled open to prevent the third nut 400 and the screw rod 120 from rotating relatively.

In other embodiments, the plurality of sets of limiting grooves 410 are provided, the plurality of sets of limiting grooves 410 are arranged on the top surface of the third nut 400 in an annular array, and the situation that the limiting pin 420 cannot be installed due to the fact that the limiting grooves 410 are not aligned with the limiting holes 121 after the third nut 400 is screwed down is avoided by selecting the proper limiting grooves 410 for installing the limiting pin 420.

The working principle of the anti-drop and anti-loose adjusting bolt is as follows: when the device is used, the screw 120 penetrates through a connecting piece of the device, the gasket 130 is placed on the surface of the connecting piece of the device and sleeved on the screw 120, the first nut 210 is sleeved on the screw 120 in a threaded manner and screwed down, the bottom of the first nut 210 is contacted with the gasket 130, the lug 131 of the gasket 130 is bent, the lug 131 on one side is close to the side surface of the first nut 210, the lug 131 on the other side is close to the side surface of the connecting piece of the device, the first nut 210 is locked, the first nut 210 cannot rotate continuously, the second nut 300 is sleeved on the screw 120 in a threaded manner, the second nut 300 is screwed down until the groove 310 on the bottom is contacted with the surface of the boss 220, the second nut 300 is screwed down continuously, because the edge thickness of the boss 220 is inconsistent, the thicker side of the boss 220 is firstly contacted with the surface of the groove 310 so as to extrude the boss 220 towards the center of the screw 120, the boss 220 and the first nut 210 are driven to deviate towards the center of the screw 120, therefore, the screw threads of the inner walls of the boss 220 and the first nut 210 are attached to the screw threads of the surface of the screw rod 120, so that the first nut 210 is limited to move, at the moment, the boss 220 extrudes one side of the inner wall of the groove 310 at the bottom of the second nut 300, and drives the other side of the second nut 300 to deviate towards the center of the screw rod 120, so that the internal threads of the second nut 300 are attached to the screw threads of the surface of the screw rod 120, so that the second nut 300 is limited to move, meanwhile, the top surface of the first nut 210 is attached to the top surface of the second nut 300, so that the interaction pressure exists between the contact surfaces of the top of the first nut 210 and the bottom of the second nut 300 all the time, the rotation of the first nut 210 and the second nut 300 is limited, and the anti-loosening effect is achieved.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An anti-drop and anti-loose adjusting bolt is characterized by comprising

The bolt comprises a bolt body (100), wherein the bolt body (100) comprises a nut (110) and a screw (120), and the nut (110) and the screw (120) are integrally arranged;

the nut component (200) comprises a first nut (210) and a boss (220), the first nut (210) is sleeved on the screw rod (120) in a threaded manner, the boss (220) is fixedly mounted at the top of the first nut (210), the boss (220) is provided with an eccentric hole (221), the eccentric hole (221) is communicated with a screw hole of the first nut (210), and an internal thread of the eccentric hole (221) is connected with an internal thread of the first nut (210);

the second nut (300) is sleeved on the screw rod (120) in a threaded manner, a groove (310) is formed in the bottom of the second nut (300), and the groove (310) is movably sleeved on the top of the boss (220).

2. The adjusting bolt of claim 1, wherein the nut (110) has a through hole (111), and the through hole (111) penetrates through the sidewall of the nut (110).

3. The adjusting bolt of claim 1, wherein the top surface of the nut (110) is provided with anti-slip threads (112).

4. The anti-drop and anti-loose adjusting bolt as claimed in claim 1, wherein the bolt body (100) further comprises a gasket (130), and the gasket (130) is movably sleeved on the screw rod (120).

5. A fall-off preventing and loosening adjusting bolt according to claim 4, wherein two sets of lugs (131) are symmetrically arranged on two sides of the gasket (130), and the lugs (131) are integrally arranged with the gasket (130).

6. The anti-drop and anti-loose adjusting bolt as claimed in claim 1, wherein the second nut (300) is provided with a nylon self-locking ring (320), and the nylon self-locking ring (320) is embedded in one end of a screw hole of the second nut (300).

7. The fall-off preventing, looseness-preventing, adjustment bolt, according to claim 6, wherein the nylon self-locking ring (320) is provided with an inner diameter smaller than an arrangement diameter of the screw (120).

8. The anti-drop and anti-loose adjusting bolt according to claim 1, further comprising a third nut (400), wherein the third nut (400) is threadedly sleeved on the screw (120), and the bottom of the third nut (400) abuts against the top of the second nut (300).

9. The anti-drop and anti-loose adjusting bolt as claimed in claim 8, wherein a limiting groove (410) is formed at the top of the third nut (400), a limiting hole (121) is formed on the side wall of the screw (120), a limiting pin (420) is slidably mounted in the limiting groove (410), and the limiting pin (420) movably penetrates through the limiting hole (121).

10. The anti-drop, anti-loose and adjusting bolt according to claim 9, characterized in that the limiting grooves (410) are provided with a plurality of sets, and the plurality of sets of limiting grooves (410) are arranged in an annular array on the top surface of the third nut (400).