CN205298213U - Stop nut - Google Patents

Abstract

The utility model discloses an anti-loosening nut, which comprises a body and a central threaded hole. The outer wall of the body is radially provided with a mold cavity, and the bottom end of the mold cavity is provided with a locking threaded hole. The locking threaded hole and the There is a locking groove between the central threaded holes, and the end of the locking groove is connected with a cutting seam extending radially to the central threaded hole; the utility model improves the processing on the basis of the size of the existing fastening nut. It does not need to add materials and rework. The fastening and loosening is based on the structural form of an integral nut, which can not only realize the nut tightening function, but also ensure the axial locking. The structure is simple, simple and easy, and can A very good stopping effect is achieved.

Description

A locknut

technical field

The utility model relates to an anti-loosening nut which can solve the problem of loosening of the fastening nut.

Background technique

The existing 2294CI composite antenna upper insulator processing mandrel tooling mainly relies on the upper insulator tooling mandrel, and uses the upper and lower nuts and the threads at both ends of the mandrel to screw and compress the upper end of the insulator and the lower end of the PTFE jacket. , the friction generated to ensure the fastening state.

This kind of fastening state, under the condition of no inertial impact force, can reach a fastened state without loosening, but in the case of the above-mentioned situation, the fastening nut will loosen. Only relying on friction to realize the processing of large workpieces without anti-loosening or anti-loosening measures can not effectively guarantee the processing of large workpieces. Its main problem is that there are no good anti-loosening or anti-loosening measures.

Utility model content

The purpose of the utility model is to provide an anti-loosening nut to solve the problem of loosening of the fastening nut under the inertial impact force during the processing of large workpieces.

The technical solution adopted by the utility model to solve the technical problem is: a locknut, including a body and a central threaded hole, the outer wall of the body is radially provided with a cavity, and the bottom end of the cavity is provided with a locking threaded hole A locking groove is provided between the locking threaded hole and the central threaded hole, and the end of the locking groove is connected with a cutting slit extending radially to the central threaded hole.

The locknut described above has two cavities and is located on the parallel line of the axis.

The lock nut described above has a rectangular cross-section of the locking groove.

The lock nut described above has an arc-shaped cross section of the locking groove.

The anti-loosening nut further includes anti-skid grooves symmetrically arranged on the outer wall of the body along the axial direction.

The said locknut has four anti-skid grooves.

The lock nut described above has a locking groove thickness of 3 mm.

In the aforementioned locknut, the distance between the locking groove and the inner wall of the central threaded hole is 8mm.

The locknut described above has a cavity of Φ13.5x8mm.

The locknut described above has a locking threaded hole of M6 specification.

The beneficial effect of the utility model is that: it is improved and processed on the basis of the size of the existing fastening nut, and does not need to increase material and rework, and the fastening and anti-loosening are in the structural form of an integral nut, both The nut tightening function can be realized, and the axial loosening can be guaranteed. The structure is simple, simple and easy to operate, and can achieve a very good stopping effect.

Description of drawings

Fig. 1 is a side view of the utility model;

Fig. 2 is a sectional view along A-A direction in Fig. 1 .

The names of the marks in the figure are: 1—body, 2—central threaded hole, 3—anti-skid groove, 4—locking groove, 5—cavity, 6—locking threaded hole.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Referring to Fig. 1 and Fig. 2, the utility model discloses a lock nut, comprising a body 1 and a central threaded hole 2, the outer wall of the body 1 is radially provided with a circular or rectangular cavity 5, the The above cavity 5 has two and is located on the parallel line of the axis, the bottom of the cavity 5 is provided with a locking threaded hole 6, and a locking groove 4 is opened between the locking threaded hole 6 and the central threaded hole 2 , because there is a locking groove 4 as a movable gap between the locking threaded hole 6 and the central threaded hole 2, when the locknut is tightened on the mandrel shaft, it is put into the M8 in the two cavities 5 The hexagonal screw is screwed into the locking threaded hole 6, and the movable part of the fastening nut will form a no-gap compression and loosening state with the external thread of the mandrel shaft after being pressured by the screw, while the locking groove 4 The cutting seam at the end can make the part between the locking groove 4 and the central threaded hole 2 float under the force, so that the fastening nut will not loosen. The application of this locknut can not only achieve a very good stopping effect, but also It is simple and easy to operate, has particularly high efficiency, and saves a lot of manpower and financial resources.

Wherein, the cross-section of the locking groove 4 can be rectangular, and the cross-section of the locking groove 4 can also be an arc falling into the arc of the concentric circle of the central threaded hole 2. As a specific embodiment, the locking The thickness of slot 4 is 3mm, the distance between locking slot 4 and the inner wall of central threaded hole 2 is 8mm, the cavity 5 is Φ13.5x8mm, and the locking threaded hole 6 is of M6 specification. There are four anti-skid grooves 3, and there are four anti-skid grooves 3.

The utility model is improved and processed on the basis of the size of the existing fastening nut, and does not need to add materials and rework. The fastening and anti-loosening is based on the structural form of an integral nut, which can realize the tightening of the nut Function, but also to ensure axial loosening.

When in use, process the fastening nut into shape, then clean the inner hole of the upper insulator that needs to be processed, put the mandrel of the tooling into the center hole of the upper insulator from the lower end of the upper insulator, and tighten the upper end of the upper insulator after pressing it in place Then screw the modified anti-loosening fastening nut onto the external thread of the mandrel. After fully tightening, screw two M8 screws into the threaded holes on the outer diameter of the fastening nut until Compress the threaded part of the anti-loosening fastening nut with the movable gap on the external thread of the mandrel to form the maximum force of the fastening nut on the entire width of the tightening state between each thread tooth. After the above work is completed, It is possible to process the outer dimensions of the PTFE jacket of the upper insulator by the lathe worker. No matter the frequent start and stop during lathe processing, the fastening nut will not loosen again, and it combines fastening and loosening as a whole.

The above-mentioned embodiments only illustrate the principles and effects of the present utility model, as well as the partially used embodiments. For those of ordinary skill in the art, without departing from the inventive concept of the present utility model, some Deformation and improvement, these all belong to the protection domain of the present utility model.

Claims (10)

1. A locknut, comprising a body (1) and a central threaded hole (2), characterized in that: the outer wall of the body (1) is provided with a cavity (5) in the radial direction, and the bottom of the cavity (5) There is a locking threaded hole (6) at the end, and a locking groove (4) is opened between the locking threaded hole (6) and the central threaded hole (2), and the end of the locking groove (4) is connected to There are cut slots extending radially to the central threaded hole (2). 2. A locknut according to claim 1, characterized in that there are two cavities (5) and they are located on parallel lines to the axes. 3. The anti-loosening nut according to claim 2, characterized in that, the section of the locking groove (4) is rectangular. 4. The anti-loosening nut according to claim 2, characterized in that, the section of the locking groove (4) is arc-shaped. 5. The anti-loosening nut according to claim 1, 2, 3 or 4, further comprising an anti-slip groove (3) symmetrically arranged on the outer wall of the body (1) along the axial direction. 6. An anti-loosening nut according to claim 5, characterized in that there are four anti-slip grooves (3). 7. The anti-loosening nut according to claim 6, characterized in that, the thickness of the locking groove (4) is 3 mm. 8 . The anti-loosening nut according to claim 7 , wherein the distance between the locking groove ( 4 ) and the inner wall of the central threaded hole ( 2 ) is 8 mm. 9. A locknut according to claim 8, characterized in that, the cavity (5) is Φ13.5x8mm. 10. The anti-loosening nut according to claim 9, characterized in that, the locking threaded hole (6) is of M6 specification.