CN109340243B

CN109340243B - Lock bolt assembly

Info

Publication number: CN109340243B
Application number: CN201811440229.1A
Authority: CN
Inventors: 朱少杰; 张帆; 刘迪; 刚宪约; 单海瑞
Original assignee: Shandong University of Technology
Current assignee: Shandong University of Technology
Priority date: 2018-11-29
Filing date: 2018-11-29
Publication date: 2024-01-23
Anticipated expiration: 2038-11-29
Also published as: CN109340243A

Abstract

The invention discloses a novel lockbolt assembly, which comprises lockbolts, locknuts, claw discs (two groups), clamping rings and springs. Four limiting holes are formed in the lockbolt and the locknut, and the claw disc is connected with the lockbolt and the locknut through the limiting holes. Two circles of clamping grooves are formed in the upper portion of the claw disc, and one circle of teeth are arranged below the claw disc. And springs are arranged between the lockbolts, the locknuts and the claw discs. The clamping ring is arranged in the clamping groove of the claw disc and is used for limiting in a screwing state and a service state respectively. In the anti-loose bolt and the anti-loose nut, teeth at the lower part of the claw disc are collected in the bolt head and the nut in the screwing process; in the service state, the teeth on the claw disk are embedded into the surface of the workpiece through an external load. In addition, the cooperation of snap ring and spring is used also to guarantee that claw dish is closely laminated with the work piece all the time, and then guarantees the connecting component effective connection and safe normal work of operation under vibrating condition.

Description

Lock bolt assembly

Technical field:

the invention relates to the technical field of mechanical fastening, in particular to a lockbolt assembly.

The background technology is as follows:

the threaded fastener is widely applied to fastening connection among various mechanical structures, relates to numerous industries and fields such as ships, vehicles and the like, is easy and convenient to detach, and has a good fastening effect in a short time. However, in the working process, due to the influences of vibration, impact, working condition transformation and the like, loosening and falling always occur, so that the fastening force is reduced and the like, and huge potential safety hazards and even personal and property losses can be caused. In summary, it is important to design a lockbolt with a locking effect to ensure stable and reliable connection with workpieces under various working conditions.

The invention patent number CN201810433220.1 of China discloses a bolt anti-loosening structure. The main structure of the screw bolt comprises a screw bolt head and a screw rod, a groove and an expansion cutting groove are formed in the end face of the screw rod, internal threads are formed in the groove, and the screw rod is screwed into the groove through the internal threads to be matched with the screw rod. The invention can realize the anti-loosening effect but fails to solve the problem that after the service time is long, the internal deformation causes poor matching effect.

The invention comprises the following steps:

the invention aims to solve the technical problem of providing a bolt which can realize reliable connection, does not cause surface failure of a fastened piece and has a locking function.

In order to achieve the above object, the technical solution of the present invention is: a lockbolt assembly comprises a lockbolt, a locknut, a claw disc, a clamping ring and a spring. Four limiting holes are formed in the bolt head of the lockbolt and the locknut, and the claw disc is connected with the lockbolt and the locknut through the limiting holes respectively. Two circles of clamping grooves are formed in the upper portion of the claw disc, and one circle of teeth are arranged below the claw disc. A spring is arranged between the lockbolt and the claw disc. The clamping ring is arranged in the clamping groove of the claw disc and is used for limiting the screwing state and the service state respectively. In the screwing state, the teeth on the claw disc are collected inside the bolt head and the nut, and the clamping ring is used for limiting in the clamping groove below the claw disc; when in service, when the bolt head and the nut are both screwed up, the clamping ring is disassembled, the external load acts on the claw disc, so that teeth on the claw disc are embedded into the fastened piece, and then the clamping ring is installed into the limit clamping groove (6-a) to be combined with the spring, so that the clamping ring and the spring are tightly attached. The claw disc is provided with teeth, friction is increased, rotation of the bolt and the nut relative to the fastened piece is limited, and loosening of the bolt is prevented to a great extent. When the clamping ring is detached, the clamping ring is detached firstly, the teeth are retracted into the bolt (nut), the clamping ring is mounted in the limiting clamping groove (6-b), and then the clamping ring is unscrewed.

After adopting such structure, the bolt can use like ordinary bolt in the use, and the design of tooth can also improve connection efficiency and realize preventing not hard up function on the claw dish.

Description of the drawings:

FIG. 1 is a schematic view of an embodiment of a novel lockbolt assembly according to the present invention

FIG. 2 is a diagram showing the bolt and nut assembly, the right side of the diagram shows the state during screwing, and the left side of the diagram shows the state during service

FIG. 3 is a schematic and semi-sectional view of a lockbolt and locknut

FIG. 4 is a schematic illustration of the engagement of the claw disk with the snap ring

FIG. 5 is a schematic view of a stop hole and a snap ring of a lockbolt and locknut

The specific embodiment is as follows:

the novel anti-loosening bolt assembly shown in the figure 1 comprises an anti-loosening bolt (1), an anti-loosening nut (7), a claw disc (2), a clamping ring (3) and a spring (4); the method is characterized in that: four limiting holes (8-a) are formed in a bolt head (9) of the anti-loose bolt (1), and the claw disc (2-a) is connected with the bolt through the limiting holes. The upper claw of the claw disc (2) is provided with clamping grooves (6-a, 6-b), and the bottom of the lower disc is provided with teeth (5); the spring (4) is arranged in the bolt and the claw disc (2-a); the clamping ring (3) is arranged in the clamping groove of the claw disc (2-a) and is used for limiting the screwing state and the service state respectively. Four limiting holes (8-b) are also formed in the locknut (7), and the claw disc (2-b) is connected with the nut (7) through the limiting holes (8-b); the spring (4) is arranged inside the nut and the claw disc (2-b).

The claw disc (2) has two positions, when the claw disc is screwed, the teeth (5) at the lower part of the claw disc (2) are received in the bolt head (nut), and the clamping ring (3) is arranged in the clamping groove (6-a) to limit, so that the bolt can be normally connected for use; during service, teeth (5) at the lower part of the claw disc (2) are embedded into a workpiece, and the clamping ring (3) is arranged in the clamping groove (6-b) to limit, so that the bolt realizes the anti-loosening function.

The spring (4) is arranged inside the claw disc (2) and the bolt (nut) and is matched with the clamping ring (3), so that the lower part of the claw disc (2) can be always pressed, and the stability and the anti-loosening effect during working are ensured

The content of the embodiment of the specification is only an enumeration of the implementation form of the inventive concept, and other structures can be adopted by the novel bolt under the same principle, for example, springs (4) can be of different types according to different working conditions; the number of the limit holes (8-a, 8-b) can be adjusted; the shape of the snap ring (3) and the clamping grooves (6-a, 6-b) can also be changed appropriately. The scope of the invention should not be considered to be limited to the specific forms set forth in the examples, but also equivalent technical means that can be conceived by a person skilled in the art based on the inventive concept.

Claims

1. A lockbolt assembly comprises a lockbolt and a locknut; the method is characterized in that: the anti-loose bolt assembly comprises an anti-loose bolt (1), an anti-loose nut (7), a first claw disc, a second claw disc, a clamping ring (3) and a spring (4); a limit hole is formed in a bolt head (9) of the locking bolt (1), and the first claw disc is matched with the locking bolt through the limit hole; the locknut (7) is also provided with a limiting hole, and the two claw discs are matched with the locknut (7) through the limiting hole; the spring (4) is arranged between the bolt head (9) and the first claw disc and between the locknut (7) and the second claw disc to provide axial pressure; two circles of clamping grooves are formed in the upper parts of the first claw disc and the second claw disc, and teeth (5) which radiate radially and are uniformly distributed circumferentially are arranged in the lower parts of the first claw disc and the second claw disc; the clamping ring (3) can be respectively arranged in two circles of clamping grooves of the first claw disc and the second claw disc and is respectively used for positioning the first claw disc and the second claw disc in the screwing and unscrewing process and the service process; the number of the bolt heads (9) of the lockbolts (1) and the limit holes on the locknuts (7) is 4; the first claw disk and the second claw disk have two working positions, in the screwing process, the clamping ring is arranged in the clamping groove at the lower part, at the moment, the tooth (5) at the lower part of the claw disk is received in the bolt head and is not contacted with the fastened piece, the rotation of the locking bolt relative to the fastened piece is not prevented, and the surface of the fastened piece is not damaged; in the service process, the teeth (5) at the lower part of the claw disc are embedded into the fastened part through an external load, and then the clamping ring (3) is arranged in the clamping groove at the upper part and acts together with the spring (4) to enable the teeth (5) to be always embedded into the fastened part, so that the locking bolt is prevented from rotating relative to the fastened part; the lockbolt (1) can be used for fastening a fastened piece by being matched with the locknut (7), the first claw disk, the second claw disk, the clamping ring (3) and the spring (4); the fastener can be fastened with the claw disc I, the clamping ring (3) and the spring (4) independently.