CN210034131U

CN210034131U - Axial locking piece

Info

Publication number: CN210034131U
Application number: CN201920817399.0U
Authority: CN
Inventors: 王守川
Original assignee: Nanjing Helick Engineering Technology Service Co Ltd
Current assignee: Nanjing Helick Engineering Technology Service Co Ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-02-07
Anticipated expiration: 2029-05-31

Abstract

The utility model discloses an axial locking piece, including locking piece main part, spiral shell ring sum outer loop, locking piece main part comprises spiral shell ring sum outer loop, the guide way has been seted up at the outer loop middle part, and the inner wall of guide way is provided with the annular knurl, the spiral shell ring sets up in the guide way that the outer loop was seted up, the bolt spread groove has been seted up at the middle part of spiral shell ring one end, and the bolt spread groove inner wall is provided with bolted connection screw thread, the other end of spiral shell ring is fixed with the nut spliced pole. The utility model discloses can effectively promote bolt pretightning force accuracy, the pretightning force that makes every bolt in fastening process is accurate, has solved because of the bolt-up not in place or exceed the bolt that the yield strength fastening caused not hard up, and axial lock solid screw thread ring is anti-tooth design, and the bolt-up finishes the back and becomes positive and negative tooth lock dead state with the nut, has solved the phenomenon that the nut returns back, realizes that the bolt pretightning force is accurate, solves the bolt not hard up, repetitious usage, reduce cost.

Description

Axial locking piece

Technical Field

The utility model relates to a bolt lock solid technical field specifically is an axial locking piece.

Background

A bolt is a mechanical part, a cylindrical threaded fastener matched with a nut, a fastener composed of a head part and a screw (a cylinder with an external thread) needs to be matched with the nut and is used for fastening and connecting two parts with through holes, the connection form is called bolt connection, if the nut is screwed off from the bolt, the two parts can be separated, so the bolt connection belongs to detachable connection, at present, in the production of most products, a bolt fastening process is provided, an operator fastens the bolt in a way of pulling up and fastening the bolt through a fastening tool until all bolts on the product are screwed completely, but the operator does not know the stress change and deformation condition of the bolt in the fastening process, the main reason of bolt loosening is that the nut returns or the bolt is over-pulled and fails in the operation process of equipment, and the operator fastens the bolt completely by experience, therefore, the bolts on the product are easily damaged due to excessive deformation of the bolts, or the bolts are not fastened, so that the product is easily detached.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art's defect, provide an axial locking piece, solved the phenomenon that the nut rolled back, it is accurate to realize the bolt pretightning force, and it is not hard up to solve the bolt, repetitious usage, reduce cost.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides an axial locking piece, includes locking piece main part, spiral shell ring sum outer loop, locking piece main part comprises spiral shell ring sum outer loop, the guide way has been seted up at the outer loop middle part, and the inner wall of guide way is provided with the annular knurl, the spiral shell ring sets up in the guide way that the outer loop was seted up, the bolt spread groove has been seted up at the middle part of spiral shell ring one end, and the bolt spread groove inner wall is provided with bolted connection screw thread, the other end of spiral shell ring is fixed with the nut spliced pole, and nut spliced pole outer wall is provided with anti-thread.

Preferably, a second chamfer angle is formed at the bottom of the screw thread ring, and the outer diameter of the screw thread ring is consistent with the diameter of the guide groove.

Preferably, the thread ring is fixed inside a guide groove formed in the outer ring through extrusion of a press machine.

Preferably, the reverse thread is provided with three threads.

Preferably, the diameter of the nut connecting column is consistent with that of the bolt connecting groove.

Preferably, the middle parts of the two surfaces of the outer ring are provided with first chamfers.

The utility model discloses the beneficial effect who reaches is: the first chamfer and the second chamfer are convenient to connect and position, the locking piece main body is connected with the bolt through the guide groove with the bolt connecting thread, the nut is fastened outside the nut connecting column with the reverse thread according to required torque during nut installation, the nut is fastened to form positive and negative thread occlusion after fastening is finished, the nut cannot roll back when the pretightening force is accurate, and the problem of bolt looseness is fundamentally solved.

Drawings

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

FIG. 2 is a schematic diagram of the outer ring structure of the present invention;

fig. 3 is a front sectional view of the screw ring of the present invention.

In the figure: 1. a locking piece main body; 2. a thread ring; 3. the bolt is connected with a thread; 4. a reverse thread; 5. a nut connecting column; 6. an outer ring; 7. knurling; 8. a first chamfer; 9. connecting a groove by a bolt; 10. a second chamfer; 11. a guide groove.

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: an axial locking piece comprises a locking piece main body 1, a thread ring 2 and an outer ring 6, wherein the locking piece main body 1 is composed of the thread ring 2 and the outer ring 6, the locking piece main body 1 is connected with a bolt through a guide groove 11 with a bolt connecting thread 3, through setting pretightening force for pretightening, the connection pretightening force is accurate, a guide groove 11 is arranged in the middle of the outer ring 6, and the inner wall of the guide groove 11 is provided with knurls 7, the thread ring 2 is arranged in the guide groove 11 arranged on the outer ring 6, the middle part of one end of the thread ring 2 is provided with a bolt connecting groove 9, and the inner wall of the bolt connecting groove 9 is provided with a bolt connecting thread 3, the other end of the screw thread ring 2 is fixed with a screw cap connecting post 5, the outer wall of the screw cap connecting post 5 is provided with a reverse thread 4, the nut is fastened outside the nut connecting column 5 with the reverse thread 4 according to the required torque, the forward and reverse threads are meshed after the nut is fastened, the pretightening force is accurate, and the nut cannot return.

Specifically, the second chamfer 10 has been seted up to 2 bottoms of screw thread ring, and 2 external diameters of screw thread ring are unanimous with guide way 11 diameter, and the screw thread ring 2 of being convenient for is fixed with outer loop 6.

Specifically, the thread ring 2 is fixed in a guide groove 11 formed in the outer ring 6 through extrusion of a press machine, and the thread ring 2 is firmly connected with the outer ring 6.

Specifically, the reverse thread 4 is provided with three locking threads for locking the nut connecting column 5 and the nut.

Specifically, the diameter of the nut connecting column 5 is consistent with that of the bolt connecting groove 9, so that the connection of bolts and nuts is facilitated.

Specifically, first chamfers 8 are all seted up at 6 two sides middle parts of outer loop, and the screw ring of being convenient for 2 is connected with outer loop 6.

The working principle is as follows: the screw thread ring 2 is extruded into a guide groove 11 formed in an outer ring 6 through a press machine, the connection and positioning are facilitated through a first chamfer 8 and a second chamfer 10, the locking piece main body 1 is connected with a bolt through the guide groove 11 with a bolt connecting thread 3, the nut is pre-tightened by using a set pre-tightening force, the connection pre-tightening force is accurate, during nut installation, the nut is fastened outside a nut connecting column 5 with a reverse thread 4 according to required torque, positive and negative thread occlusion is formed after fastening is finished, the nut cannot back when the pre-tightening force is accurate, and the problem of bolt looseness is fundamentally solved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an axial locking piece, includes locking piece main part (1), thread ring (2) and outer loop (6), its characterized in that: the locking piece main part (1) comprises thread ring (2) and outer loop (6), guide way (11) have been seted up at outer loop (6) middle part, and the inner wall of guide way (11) is provided with annular knurl (7), thread ring (2) set up in guide way (11) that outer loop (6) were seted up, bolt spread groove (9) have been seted up at the middle part of thread ring (2) one end, and bolt spread groove (9) inner wall is provided with bolted connection screw thread (3), the other end of thread ring (2) is fixed with nut spliced pole (5), and nut spliced pole (5) outer wall is provided with anti-tooth screw thread (4).

2. The axial locking tab of claim 1, further comprising: a second chamfer (10) is formed in the bottom of the screw thread ring (2), and the outer diameter of the screw thread ring (2) is consistent with the diameter of the guide groove (11).

3. The axial locking tab of claim 1, further comprising: the thread ring (2) is extruded and fixed inside a guide groove (11) formed in the outer ring (6) through a press machine.

4. The axial locking tab of claim 1, further comprising: the reverse thread (4) is provided with three threads.

5. The axial locking tab of claim 1, further comprising: the diameter of the nut connecting column (5) is consistent with that of the bolt connecting groove (9).

6. The axial locking tab of claim 1, further comprising: the middle parts of two surfaces of the outer ring (6) are provided with first chamfers (8).