CN219452663U

CN219452663U - Lock bolt assembly

Info

Publication number: CN219452663U
Application number: CN202320139223.0U
Authority: CN
Inventors: 王剑琼; 苏寄得; 庾武
Original assignee: Guilin Mining Machinery Co ltd
Current assignee: Guilin Mining Machinery Co ltd
Priority date: 2023-02-03
Filing date: 2023-02-03
Publication date: 2023-08-01
Anticipated expiration: 2033-02-03

Abstract

The utility model discloses a lockbolt assembly, which comprises a bolt, a nut, a lower washer and a pawl washer, wherein a first ratchet groove is formed in the lower surface of the nut, a second ratchet groove is formed in the upper surface of the lower washer, the pawl washer is arranged between the lower washer and the nut, a plurality of elastic pawls are arranged on the pawl washer, and when the lockbolt assembly is screwed, two ends of each elastic pawl are abutted with the first ratchet groove and the second ratchet groove. The utility model has the advantages that the pawl washer is matched with the nut and the lower washer to prevent the nut from loosening, the elastic pawls arranged at multiple positions strengthen the anti-loosening force, and the anti-loosening device is suitable for high-vibration processing equipment, has good anti-loosening effect, and has the advantages of simple structure and convenient installation.

Description

Lock bolt assembly

Technical Field

The utility model relates to the technical field of fastening bolts, in particular to a lockbolt assembly.

Background

The lockbolt is mainly used for controlling loosening failure of a connecting part running under the vibration state, especially mechanical equipment such as mining machinery and the like under the vibration working state, the bolt and the nut are easy to loosen under frequent vibration, and measures are needed to prevent the nut from loosening so as to avoid affecting the normal running of the mechanical connecting part. In the prior art, an elastic gasket is often added below a nut through the structure of a locking bolt, such as the Chinese patent application publication No. CN2487909Y, the effect of preventing the nut from loosening is achieved by arranging the elastic gasket to be matched with a ratchet groove on the nut, the locking is performed only by forming a pawl through the opening part of the elastic gasket to be matched with the ratchet groove on the nut, the contact surface area of the elastic gasket and the nut is small in the using process, and when the elastic gasket is subjected to continuous vibration, the opening of the elastic gasket is easy to separate from the nut to lose the locking effect, so that the locking effect is poor.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a lockbolt assembly which is suitable for high-vibration processing equipment, can effectively prevent nuts and nuts from loosening, and is convenient to install.

The utility model discloses a lockbolt assembly, which comprises a bolt and a nut, wherein a first convex rib is arranged on the contact surface of the bolt and a workpiece, the first convex rib of the bolt is pressed into the workpiece to be fixed during screwing, a first ratchet groove is arranged on the lower surface of the nut, the lockbolt assembly further comprises a lower gasket and a pawl gasket, a second ratchet groove is arranged on the upper surface of the lower gasket, a second convex rib is arranged on the lower surface of the lower gasket, the second convex rib on the lower surface of the lower gasket is pressed into the workpiece to be fixed during screwing, the pawl gasket is arranged between the lower gasket and the nut, a plurality of elastic pawls are arranged on the pawl gasket, and two ends of each elastic pawl are abutted against the first ratchet groove and the second ratchet groove during screwing.

The technical scheme has the advantages that the pawl washer is matched with the nut and the lower washer to prevent the nut from loosening, the elastic pawls arranged at multiple positions strengthen the anti-loosening force, the first convex rib and the second convex rib enable the bolt and the nut not to be easy to rotate or loosen, the anti-loosening device is applicable to high-vibration processing equipment, the anti-loosening effect is good, and the anti-loosening device has the advantages of being simple in structure and convenient to install.

Further, the first ratchet groove protrudes out of the lower surface of the nut and comprises a vertically arranged abutting surface and an obliquely arranged contact surface.

The technical scheme has the advantages that the first ratchet groove is arranged to be abutted with the elastic pawl, and the nut is prevented from reversely rotating and loosening through the elastic gasket.

Further, the pawl gasket is provided with a pawl inner ring, and the elastic pawls are uniformly and obliquely arranged on the pawl inner ring along the circumferential direction.

The technical scheme has the advantages that the elastic pawl is fixed by the aid of the inner pawl ring, the elastic pawl is obliquely arranged and can be abutted against the nut and the lower gasket, the lower gasket provides an abutting force for the elastic pawl, and the nut is further prevented from rotating.

Further, one end of the bolt is provided with a bolt head, the first convex rib is arranged on a plane where the bolt head contacts a workpiece, and the first convex rib is arranged along the radial direction.

The technical scheme has the advantages that the first ribs increase the friction force between the bolt and the workpiece or are pressed into the workpiece to be fixed, so that the bolt is prevented from rotating loose.

Further, an elastic washer is arranged between the lower washer and the pawl washer.

The technical scheme has the advantages that the arrangement of the elastic gasket increases the distance between the lower gasket and the pawl gasket, and the elastic pawl is prevented from being influenced by overlarge compression.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a schematic view of the whole front view structure of the present utility model

FIG. 2 is a schematic view of the nut structure of the present utility model

FIG. 3 is a schematic view of the pawl spacer structure of the present utility model

FIG. 4 is a schematic view of the lower gasket structure of the present utility model

FIG. 5 is a schematic top view of a bolt head according to the present utility model

Wherein reference numerals are as follows:

a bolt 1; a bolt head 11; rib one 12; a nut 2; the first ratchet groove 21; an abutment surface 211; a contact surface 212; a lower gasket 3; a second ratchet groove 31; rib two 32; an elastic pawl 41; a pawl inner race 42; a pawl washer 4; an elastic washer 5; a workpiece 6.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings.

As shown in fig. 1 to 5, the utility model discloses a lockbolt assembly, which comprises a bolt 1 and a nut 2, wherein a first convex rib 12 is arranged on the contact surface of the bolt 1 and a workpiece 6, the first convex rib 12 of the bolt 1 is pressed into the workpiece 6 to be fixed during screwing, a first ratchet groove 21 is arranged on the lower surface of the nut 2, the lockbolt assembly further comprises a lower washer 3 and a pawl washer 4, a second ratchet groove 31 is arranged on the upper surface of the lower washer 3, a second convex rib 32 is arranged on the lower surface of the lower washer 3 during screwing, the second convex rib 32 on the lower surface of the lower washer 3 is pressed into the workpiece 6 to be fixed during screwing, the pawl washer 4 is arranged between the lower washer 3 and the nut 2, a plurality of elastic pawls 41 are arranged on the pawl washer 4, and two ends of the elastic pawls 41 are abutted against the first ratchet groove 21 and the second ratchet groove 31 during screwing.

The technical scheme has the advantages that the pawl washer 4 is matched with the nut 2 and the lower washer 3 to prevent the nut 2 from loosening, the elastic pawls 41 arranged at multiple positions strengthen the anti-loosening force, the first ribs 12 and the second ribs 32 enable the bolt 1 and the nut 2 not to be easily loosened in a rotating way, the anti-loosening device is suitable for high-vibration processing equipment, the anti-loosening effect is good, and the anti-loosening device has the advantages of being simple in structure and convenient to install.

In some embodiments, the first ratchet groove 21 protrudes from the lower surface of the nut 2, and includes a vertically disposed abutment surface 211 and an obliquely disposed contact surface 212, where the abutment surface 211 is disposed toward the screwing-out direction of the nut 2, and the abutment surface 211 is configured to abut against one end of the pawl washer 4 to prevent the nut 2 from being pulled out and loosened.

The technical scheme has the advantages that the first ratchet groove 11 is arranged to be abutted with the elastic pawl 41, and the nut 2 is prevented from reversely rotating and loosening by the elastic gasket.

In some embodiments, the pawl washer 4 may adopt the following structural scheme, the pawl washer 4 is provided with a pawl inner ring 42, the elastic pawls 41 are uniformly and obliquely arranged on the pawl inner ring 42 along the circumferential direction, and typically four pawls are arranged on each pawl inner ring 42, so that the strength of the pawls is enhanced while the functions of the pawls are ensured, and the service life of the pawl washer 4 is prolonged.

The technical scheme has the advantages that the elastic pawl 41 is fixed by the pawl inner ring 42, the elastic pawl 41 is obliquely arranged and can be abutted with the nut 2 and the lower washer 3, and the lower washer 3 provides an abutting force for the elastic pawl 41 to further prevent the nut 2 from rotating.

In some embodiments, the bolt 1 may adopt a structure that one end of the bolt 1 is provided with a bolt head 11, a plane where the bolt head 11 contacts the workpiece 6 is provided with a first rib 12, and the first rib 12 is disposed along a radial direction.

The technical scheme has the advantages that the first rib 12 is arranged to increase the friction force between the bolt head 11 and the workpiece, or the first rib 12 is pressed into the workpiece to be fixed, so that the bolt 1 is prevented from rotating loose.

In some embodiments, the lower gasket 3 may adopt a structure in which the second rib 32 is provided on the lower surface of the lower gasket 3.

The technical scheme has the advantages that the second rib 32 has the advantages that friction force between the lower washer 3 and a workpiece is increased, or the second rib 32 is pressed into the workpiece to be fixed, after the bolt assembly is screwed up, the lower washer 3 is not easy to rotate, the elastic pawl 41 abuts against the lower washer 3 and the nut 2, and after the lower washer 3 is fixed, the elastic pawl 41 abuts against the nut 2 more reliably.

In some embodiments, the lower washer 3 may adopt a structure in which an elastic washer 5 is disposed between the lower washer 3 and the pawl washer 4.

The technical scheme has the advantages that the arrangement of the elastic washer 5 increases the distance between the lower washer 3 and the pawl washer 4, and the elastic pawl 41 is prevented from being excessively pressed to influence the elasticity of the pawl.

It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.

Claims

1. The utility model provides a lockbolt subassembly, includes bolt (1) and nut (2), its characterized in that, bolt (1) are provided with bead (12) with work piece (6) contact surface, during tightening, bead (12) of bolt (1) are impressed in work piece (6) fixedly, the lower surface of nut (2) is provided with ratchet groove (21), still includes lower packing ring (3) and pawl packing ring (4), lower packing ring (3) upper surface is provided with ratchet groove two (31), lower packing ring (3) lower surface is provided with bead two (32), during tightening, lower packing ring (3) lower surface bead two (32) are impressed in work piece (6) fixedly, pawl packing ring (4) set up between lower packing ring (3) and nut (2), be provided with a plurality of elasticity pawl (41) on pawl packing ring (4), during tightening, the both ends of elasticity pawl (41) with ratchet groove one (21) and ratchet groove two (31) butt.

2. The lockbolt assembly according to claim 1, wherein the ratchet groove (21) protrudes from the lower surface of the nut (2) and comprises a vertically disposed abutment surface (211) and an obliquely disposed contact surface (212).

3. The lockbolt assembly according to claim 1, wherein the pawl washer (4) is provided with a pawl inner ring (42), and the elastic pawl (41) is uniformly inclined on the pawl inner ring (42) in the circumferential direction.

4. The lockbolt assembly according to claim 1, wherein one end of the bolt (1) is provided with a bolt head (11), the first rib (12) is provided on a plane where the bolt head (11) contacts the workpiece (6), and the first rib (12) is provided along a radial direction.

5. The lockbolt assembly according to claim 1, wherein an elastic washer (5) is provided between the lower washer (3) and the pawl washer (4).