CN216361098U

CN216361098U - Unsmooth double thread anti loosening structure

Info

Publication number: CN216361098U
Application number: CN202123292961.9U
Authority: CN
Inventors: 谢旭良; 张璐阳; 邓朝阳
Original assignee: Changan University
Current assignee: Changan University
Priority date: 2021-12-25
Filing date: 2021-12-25
Publication date: 2022-04-22
Anticipated expiration: 2031-12-25

Abstract

The utility model discloses a concave-convex double-thread anti-loosening structure which comprises a main rod, wherein an outer convex thread and an inner concave thread are arranged on the outer portion of the main rod, the outer convex thread is positioned below the inner concave thread, a fastening nut is connected to the outer convex thread through a thread, an anti-loosening nut is connected to the outer concave thread through a thread, and a fixing assembly for preventing relative rotation between the fastening nut and the anti-loosening nut is jointly arranged on the outer portions of the fastening nut and the anti-loosening nut. In the utility model: the fastening nut and the locknut which are in threaded connection in opposite directions can be fixedly connected, so that the locking effect of the concave-convex double-thread locking structure can be prevented from being influenced by the relative rotation of the fastening nut and the locknut; the locknut fixedly connected with the short barrel cannot rotate, and the fastening nut and the locknut cannot loosen due to the fact that the locknut cannot rotate, so that the anti-loosening locking effect of the concave-convex double-thread anti-loosening structure is further improved.

Description

Unsmooth double thread anti loosening structure

Technical Field

The utility model relates to the technical field of double-thread anti-loosening, in particular to a concave-convex double-thread anti-loosening structure.

Background

The bolt is a fastener indispensable to mechanical equipment, one of the advantages of bolt connection compared with other connecting pieces is that the bolt connection is detachable and easy to maintain, but the bolt connection is also a weakness of the bolt connection, and particularly in large-scale mechanical equipment such as trains, automobiles, airplanes and tanks which run at high speed and have strong vibration, vicious incidents of vehicle rollover and vehicle damage and human death caused by loosening and loosening of threaded connection, fatigue fracture and the like are numerous. The thread friction anti-loosening is one of the most widely applied thread anti-loosening methods at present, and the anti-loosening effect is achieved by means of friction force between nut threads and screw threads.

At present, double-nut looseness prevention is widely applied technology, but in some more important or strong vibration occasions, a common double-nut still cannot achieve a satisfactory looseness prevention effect, double-nut looseness prevention increases the looseness prevention effect, but relative rotation between the double-nut cannot be prevented, and therefore a concave-convex double-thread looseness prevention structure is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defect that double nuts cannot prevent relative rotation between the double nuts although the anti-loosening effect is increased in the prior art, and provides a concave-convex double-thread anti-loosening structure.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a unsmooth double thread anti loosening structure, includes the mobile jib, the outside of mobile jib is provided with evagination screw thread and indent screw thread, the evagination screw thread is located the below of indent screw thread, the outside threaded connection of evagination screw thread has fastening nut, the outside threaded connection of indent screw thread has locknut, fastening nut with locknut's outside is provided with jointly and is used for preventing fastening nut with take place relative pivoted fixed subassembly between the locknut.

The above technical solution further comprises:

the fixing assembly comprises a main flange disc fixedly connected with the fastening nut, and four main nuts are fixedly connected to one side, far away from the anti-loose nut, of the main flange disc.

The fixing assembly further comprises an auxiliary flange plate fixedly connected to the outer portion of the locknut, and four auxiliary nuts are fixedly connected to one side, far away from the fastening nut, of the auxiliary flange plate.

The four main nuts are fixedly connected to the outer portion of the main flange plate in an axial symmetry mode, the four auxiliary nuts are fixedly connected to the outer portion of the auxiliary flange plate in an axial symmetry mode, and screws are connected between each main nut and each auxiliary nut in a threaded mode.

The outer portion of the concave thread is further connected with a short barrel in a threaded mode, the outer portion of the short barrel is fixedly connected with the outer portion of the locknut, four insertion holes are formed in the outer portion of the short barrel, and the four insertion holes are axially symmetrically formed in the outer portion of the short barrel.

Four equal swing joint in inside of jack has the bolt, four the bolt is kept away from four the common fixedly connected with connecting cylinder of the inside one end of jack, the internal diameter of connecting cylinder is greater than the diameter of master rod.

The external portion of mobile jib has seted up the cross recess, the inside fixedly connected with of connecting cylinder with the cross pole of cross recess adaptation.

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

1. according to the utility model, the fastening nut, the locknut and the fixing component are used in a matched manner, so that the fastening nut and the locknut which are in threaded connection in opposite directions can be fixedly connected, and the locking effect of the concave-convex double-thread locking structure is prevented from being influenced by the relative rotation of the fastening nut and the locknut.

2. According to the utility model, the short barrel, the bolt, the connecting barrel and the cross rod are matched for use, so that the locknut fixedly connected with the short barrel cannot rotate, and the locknut cannot be loosened due to the fact that the locknut cannot rotate, thereby further improving the anti-loosening and locking effects of the concave-convex double-thread anti-loosening structure.

Drawings

Fig. 1 is a schematic view of a first three-dimensional structure of a male-female double-thread anti-loose structure according to the present invention;

fig. 2 is a schematic diagram of a second three-dimensional structure of a male-female double-thread anti-loose structure according to the present invention;

FIG. 3 is a schematic view of a split structure of a concavo-convex double-thread anti-loose structure provided by the utility model;

FIG. 4 is a schematic structural view of a short cylinder according to the present invention;

fig. 5 is a schematic structural view of the connector barrel of the present invention.

In the figure: 1. a main rod; 2. a convex thread; 3. concave screw threads; 4. fastening a nut; 5. a locknut; 6. a fixing assembly; 61. a main flange plate; 62. a main nut; 63. an auxiliary flange plate; 64. a secondary nut; 65. a screw; 7. a short cylinder; 8. a jack; 9. a bolt; 10. a connecting cylinder; 11. a cross groove; 12. a cross bar.

Detailed Description

The technical solution of the present invention is further explained with reference to the accompanying drawings and specific embodiments.

Example one

As shown in fig. 1-3, the anti-loosening structure with double concave-convex threads provided by the utility model comprises a main rod 1, wherein the outer part of the main rod 1 is provided with a convex thread 2 and a concave thread 3, the convex thread 2 is positioned below the concave thread 3, the outer thread of the convex thread 2 is connected with a fastening nut 4, the outer thread of the concave thread 3 is connected with an anti-loosening nut 5, and the outer parts of the fastening nut 4 and the anti-loosening nut 5 are provided with a fixing component 6 for preventing relative rotation between the fastening nut 4 and the anti-loosening nut 5;

the fixing assembly 6 comprises a main flange plate 61 fixedly connected to the fastening nut 4, four main nuts 62 are fixedly connected to one side, away from the locknut 5, of the main flange plate 61, the four main nuts 62 are fixedly connected to the outer portion of the main flange plate 61 in an axial symmetry mode, the fixing assembly 6 further comprises an auxiliary flange plate 63 fixedly connected to the outer portion of the locknut 5, four auxiliary nuts 64 are fixedly connected to the outer portion of the auxiliary flange plate 63 in an axial symmetry mode, four auxiliary nuts 64 are fixedly connected to one side, away from the fastening nut 4, of the auxiliary flange plate 63, and a screw 65 is in threaded connection between each main nut 62 and each auxiliary nut 64;

through the cooperation of the fastening nut 4, the locknut 5 and the fixing group 6, the fastening nut 4 and the locknut 5 which are connected by threads in opposite directions can be fixedly connected, and the fastening nut 4 and the locknut 5 are prevented from rotating relatively.

In the embodiment, the assembly part is firstly sleeved on the main rod 1, then the fastening nut 4 is screwed on the outer convex thread 2, the fastening nut 4 is ensured to be tightly abutted against the assembly part, the inner part of the fastening nut 4 is not separated from the outer convex thread 2, if the thickness of the assembly part is not accordant, spring gaskets can be added on the upper side and the lower side of the assembly part, and then the locknut 5 is screwed on the inner concave thread 3 until the locknut 5 is tightly abutted against the fastening nut 4;

and then, the screws 65 between each main nut 62 and each auxiliary nut 64 are sequentially installed, so that the main flange plate 61 and the auxiliary flange plate 63 are fastened and connected, the fastening nut 4 and the locknut 5 are fastened and connected, and the locking effect of the concave-convex double-thread locking structure is prevented from being influenced by the relative rotation of the fastening nut 4 and the locknut 5.

Example two

As shown in fig. 1-5, based on the first embodiment, a short barrel 7 is further connected to the outside of the concave thread 3 through a thread, the outside of the short barrel 7 is fixedly connected to the outside of the locknut 5, four insertion holes 8 are formed in the outside of the short barrel 7, the four insertion holes 8 are axially symmetrically formed in the outside of the short barrel 7, the insides of the four insertion holes 8 are movably connected with pins 9, one ends of the four pins 9 far away from the insides of the four insertion holes 8 are fixedly connected with a connecting barrel 10, the inner diameter of the connecting barrel 10 is larger than the diameter of the main rod 1, a cross groove 11 is formed in the outside of the main rod 1, and a cross rod 12 matched with the cross groove 11 is fixedly connected to the inside of the connecting barrel 10;

through the cooperation use of short section of thick bamboo 7, bolt 9, connecting cylinder 10 and cross bar 12 for locknut 5 with short section of thick bamboo 7 fixed connection can't take place to rotate, because locknut 5 can't rotate, fastening nut 4 and locknut 5 just can not become flexible.

In this embodiment, at first align the cross recess 11 on the mobile jib 1 with the cross bar 12 on the connecting cylinder 10, then press down the connecting cylinder 10 hard, make four bolts 9 insert the inside of four jacks 8 respectively completely, because the joint of cross bar 12 and cross recess 11, connecting cylinder 10 and four bolts 9 can't rotate, make the connecting cylinder 10 can't rotate, the jam nut 5 with connecting cylinder 10 fixed connection just also can't take place to rotate, because jam nut 5 can't rotate, fastening nut 4 and jam nut 5 just can not become flexible, thereby further improved this unsmooth double thread locking structure's locking effect.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a unsmooth double thread locking structure, includes mobile jib (1), its characterized in that, the outside of mobile jib (1) is provided with evagination screw thread (2) and indent screw thread (3), evagination screw thread (2) are located the below of indent screw thread (3), the outside threaded connection of evagination screw thread (2) has fastening nut (4), the outside threaded connection of indent screw thread (3) has locknut (5), fastening nut (4) with the outside of locknut (5) is provided with jointly and is used for preventing fastening nut (4) with relative pivoted fixed subassembly (6) takes place between locknut (5).

2. A male-female double-thread anti-loosening structure according to claim 1, wherein the fixing assembly (6) comprises a main flange (61) fixedly connected to the fastening nut (4), and four main nuts (62) are fixedly connected to one side of the main flange (61) far away from the anti-loosening nut (5).

3. A male and female double thread lock arrangement as claimed in claim 2, wherein said fixing assembly (6) further comprises a secondary flange (63) fixedly attached to the exterior of said lock nut (5), four secondary nuts (64) being fixedly attached to the side of said secondary flange (63) remote from said fastening nut (4).

4. A male-female double-thread anti-loosening structure as claimed in claim 3, wherein four main nuts (62) are fixedly connected to the outside of the main flange plate (61) in an axisymmetric manner, four auxiliary nuts (64) are fixedly connected to the outside of the auxiliary flange plate (63) in an axisymmetric manner, and a screw (65) is screwed between each main nut (62) and each auxiliary nut (64).

5. The anti-loosening structure with double concave-convex threads as claimed in claim 1, wherein a short barrel (7) is further connected to the outside of the concave-convex threads (3) in a threaded manner, the outside of the short barrel (7) is fixedly connected with the outside of the anti-loosening nut (5), four insertion holes (8) are formed in the outside of the short barrel (7), and the four insertion holes (8) are axially symmetrically formed in the outside of the short barrel (7).

6. The anti-loosening structure with double concave-convex threads as claimed in claim 5, wherein the four insertion holes (8) are movably connected with the inserted pins (9), one ends of the four inserted pins (9) far away from the four insertion holes (8) are fixedly connected with the connecting cylinders (10) together, and the inner diameter of the connecting cylinders (10) is larger than the diameter of the main rod (1).

7. The anti-loosening structure with double concave-convex threads as claimed in claim 6, wherein a cross-shaped groove (11) is formed in the outer portion of the main rod (1), and a cross rod (12) matched with the cross-shaped groove (11) is fixedly connected to the inner portion of the connecting cylinder (10).