CN212055462U

CN212055462U - Never-loosening screw

Info

Publication number: CN212055462U
Application number: CN202020310088.8U
Authority: CN
Inventors: 马开广
Original assignee: Individual
Current assignee: Ma Kaiguang
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-12-01
Anticipated expiration: 2030-03-13

Abstract

The utility model discloses a never-loosening screw, which belongs to the technical field of assembly fastening, and comprises a bolt, wherein the outer side of the bolt is in threaded connection with a fixed nut and a locking screw cylinder from left to right, the right end face of the bolt is provided with an opposite groove, the front side wall and the rear side wall of the locking screw cylinder are both provided with locking holes, the two locking holes are respectively positioned at the front side and the rear side of the opposite groove, a locking iron wire is connected between the two locking holes in a penetrating way, and the locking iron wire is positioned inside the opposite groove; after the screw is simply assembled, the locking screw barrel increases huge longitudinal resistance to the fixing nut, prevents the fixing nut from moving transversely, locks the fixing nut and thoroughly avoids the looseness of the fixing nut, so that the screw can never be loosened in a real sense.

Description

Never-loosening screw

Technical Field

The utility model relates to an assembly fastening technical field, in particular to never become flexible screw.

Background

A large number of fastening screws are required in high-speed rail construction, and because the high-speed rail runs very fast, the train contacts with a rail to generate huge vibration when running, the fastening screws can loosen quickly, and great potential safety hazards are provided, so that the running safety of the train must ensure that the screws cannot loosen, and at present, the screws which never loosen in the world mainly comprise Japanese Hadelock screws which never loosen and Chinese screws which are not easy to loosen; the Japanese Hard-lock anti-loose nut combines the anti-loose principle of double nuts and concave-convex nuts and is improved, two nuts in a concave shape and a convex shape are used on one screw, the lower part of the nut is in a convex shape, the center is slightly dislocated (eccentrically processed) during processing to play a role of a wedge, the upper part of the nut is in a concave shape, processing (circular processing) deviating from the center is not carried out, thus forming the function of wedging the wedge by a hammer, and combining the two nuts into a whole; a spring or a concave-convex gasket is added between two nuts to fasten the two nuts in the Chinese screw which is not easy to loosen, so that the friction force between the nuts and the bolts is increased, and the effect of not easy to loosen is achieved.

The japanese Hard-lock locknut has the following disadvantages: 1. the upper concave nut is easy to burst, the potential safety hazard is great, when external force is applied, the thread engagement of the nut and the bolt is necessarily deflected to one side, the eccentric pressure is increased along with the deflection, and the thread stress is uneven. Meanwhile, the bolt is added with bending stress besides normal tensile stress when in use, so that the fatigue strength damage to the nut, the bolt and the thread is greatly increased, the upper concave nut is easy to crack, the screw is loosened, and the potential safety hazard is great. 2. The deformation easily has not hard up hidden danger, needs in time to overhaul, and the periodic replacement, so-called "never not hard up" really only have stronger locking performance, have not hard up hidden danger in fact, according to the test, use torque wrench to screw up when being 180 nm, begin not hard up. Therefore, the maintenance is required in time and the replacement is required at regular intervals; 3. the requirements on the manufacturing process and the metal material are extremely high, a fine machine tool and a precise technology are required, and the requirements on the selection of the metal material and the expansion coefficient of the metal material are also extremely high; 4. the price is high, the application range is narrow, and the method is mainly applied to industries such as high-speed rails and the like; the Chinese screws are not easy to loosen, are easy to deform, are easy to loosen, have larger potential safety hazards, and need to be overhauled and replaced regularly.

SUMMERY OF THE UTILITY MODEL

The utility model provides a never become flexible screw aims at solving the problem of the bursting of current difficult not hard up screw and not hard up hidden danger, realizes the real never not hard up screw, reaches simple manufacture craft's effect simultaneously, is convenient for improve current various easily not hard up screws.

The utility model discloses a realize like this, a never not hard up screw, the screw comprises a bolt, there are fixation nut and locking barrel in the outside of bolt from a left side to right side threaded connection, the right-hand member face of bolt has been seted up to the opposite slot, the locking hole has all been seted up, two to both sides around the locking barrel the locking hole is located both sides around the opposite slot respectively, two the distance of 2 ~ 4 millimeters is left with 3 right side edges of locking barrel, two through connection has the iron wire of locking between the locking hole, the iron wire of locking is located the inside of opposite slot.

In order to increase the frictional force between hand and the locking barrel, conduct the utility model discloses a never become flexible screw is preferred, the lateral wall of locking barrel is provided with anti-skidding line, anti-skidding line is located the left side in two locking holes.

In order to facilitate the staff with the position of the alignment of locking hole to the fluting, conduct the utility model discloses a never not hard up screw is preferred, the length of to the fluting is greater than the length 4 ~ 6mm of locking barrel.

In order to facilitate the drilling production of the mill, as the utility model discloses a never become flexible screw is preferred, two the shape in locking hole is circular.

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

1. the front side wall and the rear side wall of the locking barrel are provided with locking holes, locking iron wires are used for penetrating between the two locking holes, the locking iron wires are positioned in the opposite grooves, and then the two ends of the locking iron wires are bent and screwed, so that the locking barrel increases huge longitudinal resistance for the fixing nut, prevents the transverse movement of the fixing nut, achieves the effect of locking the fixing nut, thoroughly avoids the loosening of the fixing nut, and realizes a screw which is never loosened in a real sense;

2. the bolt, the fixing nut and the locking barrel are all concentric circular structures, so that the locking barrel does not bear eccentric pressure, cannot burst and has no potential safety hazard;

3. the improved steps of the screw are simplified in the mode of drilling the groove and the locking screw cylinder, the production in a factory is facilitated, meanwhile, the device has low requirements on materials, the production cost of products is reduced, and the effect of wide application is achieved.

Drawings

FIG. 1 is an overall structure diagram of the present invention;

FIG. 2 is a view of the structure of the bolt and nut of the present invention;

FIG. 3 is a structural view of the locking screw barrel of the present invention;

FIG. 4 is a view of the structure of the bolt of the present invention;

fig. 5 is a structure view of the fixing nut of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a never not hard up screw, includes bolt 1, and there are fixation nut 2 and locking barrel 3 in the outside of bolt 1 from a left side to right threaded connection, and slotted 101 has been seted up to the right-hand member face of bolt 1, and locking hole 301 has all been seted up to the both sides wall around the locking barrel 3, and two locking holes 301 are located the both sides around slotted 101 respectively, and run through between two locking holes 301 and be connected with the dead iron wire 4 of lock, and the dead iron wire 4 of lock is located the inside of slotted 101.

In this embodiment: the right end of a bolt 1 penetrates through an object to be fixed, then a fixing nut 2 is screwed on the outer side of the bolt 1, then a locking barrel 3 is in threaded connection with the bolt 1, the locking barrel 3 is positioned on the right side of the fixing nut 2 at the moment, two locking holes 301 are drilled on the locking barrel 3 according to the position of an opposite slot 101, the two locking holes 301 are respectively positioned on the front side and the rear side of the opposite slot 101, a distance of 2-4 mm is reserved between the two locking holes 301 and the opposite slot 101, a locking iron wire 4 penetrates through the two locking holes 301 and the opposite slot 101, two ends of the locking iron wire 4 are bent and screwed, the locking barrel 3 adds huge longitudinal resistance to the fixing nut 2, prevents the fixing nut 2 from moving transversely, avoids the fixing nut 2 from loosening, realizes real perpetual screw loosening, and simplifies the improvement steps of the bolt through a slotting and drilling mode, the production in factory is convenient, the production cost of the product is reduced, and the effect of wide application is achieved.

As a technical optimization scheme of the utility model, the lateral wall of locking barrel 3 is provided with anti-skidding line 302, and anti-skidding line 302 is located the left side of two locking holes 301.

In this embodiment: when the worker twists the locking barrel 3, the anti-slip threads 302 on the outer side of the locking barrel 3 can increase the friction force between the hand and the locking barrel 3, thereby facilitating the screwing of the locking barrel 3.

As a technical optimization scheme of the utility model, to the length of groove 101 be greater than the length 4 ~ 6mm of locking barrel 3.

In this embodiment: after the locking barrel 3 is connected in a threaded mode, the split groove 101 in the right end of the bolt is exposed from the right side of the locking barrel 3 by 4-6 mm in length, and therefore a worker can conveniently drill two locking holes 301 in the position, aligned with the split groove 101, of the bolt.

As a technical optimization scheme of the present invention, the shapes of the two locking holes 301 are circular.

In this embodiment: for circularly through setting up two locking holes 301, and lock dead iron wire 4 also for cylindric, and then the mill of being convenient for carries out drilling production, has also made things convenient for lock dead iron wire 4 to run through simultaneously.

The working principle is as follows: the right end of the bolt 1 penetrates through an object to be fixed, then the fixing nut 2 is screwed on the outer side of the bolt 1, then the locking barrel 3 is in threaded connection with the bolt 1, two locking holes 301 are drilled on the locking barrel 3 according to the positions of the opposite slots 101, the two locking holes 301 are respectively located on the front side and the rear side of the opposite slots 101, a distance of 2-4 mm is reserved between the two locking holes 301 and the opposite slots 101 and the locking iron wire 4 penetrates through the two locking holes 301 and the opposite slots 101, the two ends of the locking iron wire 4 are bent and screwed, the locking barrel 3 adds huge longitudinal resistance to the fixing nut 2, the transverse movement of the fixing nut 2 is prevented, the fixing nut 2 is prevented from loosening, and accordingly the fact that the screw is not loosened is achieved.

The above is only a preferred embodiment of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention, no matter what form is adopted, as long as the locking barrel is locked to prevent the fixing nut from moving right, so as to achieve the purpose of never loosening, should be included in the protection scope of the present invention.

Claims

1. The utility model provides a never not become flexible screw, includes bolt (1), its characterized in that: the outside of bolt (1) has fixation nut (2) and locking barrel (3) from a left side to right side threaded connection, the right end face of bolt (1) has been seted up to split groove (101), locking hole (301), two have all been seted up to the front and back both sides wall of locking barrel (3) locking hole (301) are located the front and back both sides to split groove (101) respectively, two through connection has locking iron wire (4) between locking hole (301), locking iron wire (4) are located the inside to split groove (101).

2. A never-loose screw as claimed in claim 1, wherein: the outer side wall of the locking screw cylinder (3) is provided with anti-skidding threads (302), and the anti-skidding threads (302) are located on the left sides of the two locking holes (301).

3. A never-loose screw as claimed in any one of claims 1 or 2, wherein: the length of the split groove (101) is 4-6 mm longer than that of the locking screw barrel (3).

4. A never-loose screw as claimed in claim 1, wherein: the shape of the two locking holes (301) is circular.