Anti-loosening ultra-precise screw for aviation aircraft

Abstract

The utility model relates to an anti-loosening ultra-precision screw for an aviation aircraft, which comprises a bolt and a nut, the bolt is mounted on an aircraft part, a retaining washer is sleeved on a screw rod, inner side teeth on the inner wall of the retaining washer are positioned in a limiting groove on the surface of the screw rod to slide when the retaining washer is mounted, and the retaining washer is fixed on the screw rod after the retaining washer is mounted. After the first nut is installed and fastened, the clamping block on the outer surface of the retaining washer is bent, and the clamping block is bent into the clamping groove, so that the anti-loosening protection effect is achieved, meanwhile, the second nut is installed on the screw rod, and due to the fact that the upper wedge-shaped ring is integrally machined at the bottom of the first nut and the lower wedge-shaped ring is integrally machined at the top of the second nut, the anti-loosening effect is achieved. The upper wedge-shaped ring and the lower wedge-shaped ring are integrally machined, the wedge-shaped tooth parts used in cooperation are integrally machined on the adjacent sides of the lower wedge-shaped ring and the upper wedge-shaped ring, and when the second nut is tightened, due to the arrangement of the upper wedge-shaped ring and the lower wedge-shaped ring, the wedge-shaped tooth parts on the adjacent sides of the upper wedge-shaped ring and the lower wedge-shaped ring are meshed and locked, and looseness caused by vibration of the screw rod is effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to precise screw equipment technical field, concretely is an aviation aircraft is with anti -loose super -precision screw. BACKGROUND

[0002] Screw is usually composed of head and screw rod two parts, also called bolt, is one of twelve kinds of fasteners, usually with nut cooperation can connect two parts with through -hole, in prior art, the anti -loose super -precision screw's anti -loose structure is relatively single, lacks the multistage anti -loose effect of screw, leads to the poor loosening effect.

[0003] For example, the authorized patent document no. CN202122919270.0 discloses an aviation aircraft is with anti -loose super -precision screw, including bolt body, the bottom of bolt body surface is connected with the sleeve, the top of bolt body surface is fixedly connected with the positioning block, the top of sleeve and the surface of bolt body are fixedly connected with the limit block. The utility model discloses a wrench twist sleeve, sleeve moves upward on the surface of bolt body, sleeve drives limit block to move upward, limit block drives anti -slip block to move upward, anti -slip block and aircraft part precision contact, thereby reach the purpose that prevent sleeve loosening, make the super -precision screw have the advantage of anti -loose, in actual use, through the cooperation of positioning mechanism and positioning groove, can limit sleeve, can avoid the problem of sleeve or bolt body self -rotation caused by vibration, and the mechanic does not need to tighten the screw frequently, reduces the probability of aircraft accident caused by screw loosening.

[0004] The above-mentioned patent is that the anti -loose structure is relatively single, lacks the multistage anti -loose effect of screw, therefore we need to provide an aviation aircraft is with anti -loose super -precision screw. UTILITY MODEL CONTENTS

[0005] The utility model discloses an aviation aircraft is with anti -loose super -precision screw, sets up anti -loose mechanism and makes nut and bolt cooperation, plays better anti -loose protection, and has multistage anti -loose protection, avoids single anti -loose component, leads to the poor anti -loose effect, can avoid the problem of sleeve or bolt body self -rotation caused by vibration, and the mechanic does not need to tighten the screw frequently, reduces the probability of aircraft accident caused by screw loosening, solves the problem in the above -mentioned background art.

[0006] To achieve the above -mentioned purpose, the utility model provides the following technical scheme: an aviation aircraft is with anti -loose super -precision screw, comprising:

[0007] Bolt and nut block;

[0008] The bolt comprises a nut and a screw rod integrally processed at the bottom of the nut, the nut block comprises a first nut and a second nut threadedly mounted on the surface of the screw rod, and a wedge-shaped anti-loosening piece is arranged between the first nut and the second nut.

[0009] The surface of the first nut is provided with an anti-loosening mechanism for preventing loosening between the first nut and the screw rod.

[0010] Preferably, the anti-loosening mechanism comprises six clamping grooves opened at the top of the surface of the first nut, the six clamping grooves are uniformly distributed on the outer surface of the first nut, the top of the first nut is provided with a retreat-stop washer, the retreat-stop washer is movably sleeved on the surface of the bolt rod, the two sides of the retreat-stop washer are integrally provided with a plurality of clamping blocks in a radial manner, and the clamping blocks are used in cooperation with the clamping grooves.

[0011] Preferably, the inner wall of the retreat-stop washer is fixedly provided with an inner tooth, and the surface of the screw rod is provided with a strip-shaped limiting groove, and the surface of the inner tooth is slidably arranged in the limiting groove.

[0012] Preferably, the wedge-shaped anti-loosening piece comprises an upper wedge-shaped ring integrally processed at the bottom of the first nut, and the top of the second nut is integrally provided with a lower wedge-shaped ring, and the side adjacent to the upper wedge-shaped ring and the lower wedge-shaped ring is integrally provided with a wedge-shaped tooth portion used in cooperation.

[0013] Preferably, the inside of the nut is provided with a reserved hole for the iron wire to penetrate.

[0014] Preferably, the surface of the second nut is provided with two through holes, and the inside of the screw rod is provided with a rectangular groove, and the two through holes and the rectangular groove are used in cooperation.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The utility model discloses the anti-loosening mechanism is arranged, and when the nut is used in cooperation with the bolt, better anti-loosening protection is played, and multi-stage anti-loosening protection is also provided, so that the problem that the nut or the bolt body self-rotates due to vibration can be avoided, the mechanic does not need to frequently tighten the screw, and the probability that the airplane is involved due to the loosening of the screw is reduced. ACCURACY OF DRAWINGS

[0017] Figure 1 It is the structure three-dimensional schematic view of the utility model;

[0018] Figure 2 It is the structure three-dimensional exploded view of the utility model;

[0019] Figure 3 It is the anti-loosening mechanism three-dimensional view of the utility model;

[0020] Figure 4 The schematic diagram is used for the through hole of the utility model.

[0021] In the figure: 1, bolt; 11, nut; 12, screw rod; 2, nut block; 21, first nut; 22, second nut; 3, wedge-shaped anti-loosening part; 31, upper wedge-shaped ring; 32, lower wedge-shaped ring; 4, anti-loosening mechanism; 41, clamping groove; 42, retreat-stop washer; 43, clamping block; 5, inner side tooth; 6, limiting groove; 7, wedge-shaped tooth part; 8, reserved hole; 9, through hole; 10, rectangular groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: an aviation aircraft is used to prevent loose ultra-precision screw, comprising:

[0024] Bolt 1 and nut block 2;

[0025] Bolt 1 includes nut 11 and screw rod 12 integrally processed in the bottom of nut 11, nut block 2 includes first nut 21 and second nut 22 threadedly installed on the surface of screw rod 12, and wedge-shaped anti-loosening part 3 is arranged between first nut 21 and second nut 22;

[0026] The surface of first nut 21 is provided with anti-loosening mechanism 4 for preventing loosening between first nut 21 and screw rod 12;

[0027] Specifically, when nut and bolt 1 are used in cooperation, anti-loosening mechanism 4 is arranged to provide good anti-loosening protection and multi-stage anti-loosening protection, avoid single anti-loosening component, leading to poor anti-loosening effect, can avoid the problem of self-rotation of screw sleeve or bolt 1 body caused by vibration, and maintenance personnel do not need to tighten screw frequently, reduce the probability of aircraft accident caused by screw loosening.

[0028] Anti-loosening mechanism 4 includes six clamping grooves 41 opened on the top surface of first nut 21, six clamping grooves 41 are evenly distributed on the outer surface of first nut 21, the top of first nut 21 is provided with retreat-stop washer 42, retreat-stop washer 42 is movably sleeved on the surface of bolt 1 rod, retreat-stop washer 42 is integrally processed with a plurality of clamping blocks 43 in radial direction on both sides, and clamping blocks 43 are used in cooperation with clamping grooves 41;

[0029] In this embodiment, the bolt 1 is installed on the aircraft component, the stop washer 42 is first sleeved on the screw rod 12, wherein when the stop washer 42 is installed, the inner side teeth 5 on the inner wall of the stop washer 42 are located in the limiting groove 6 on the surface of the screw rod 12 and slide, after the stop washer 42 is installed, the first nut 21 is installed, after the first nut 21 is fastened, the clamping block 43 on the outer surface of the stop washer 42 is bent, the clamping block 43 is bent into the clamping groove 41, thereby achieving the anti-loosening protection effect, at the same time, the second nut 22 is installed on the screw rod 12, because the first nut 21 is integrally processed with the upper wedge ring 31 at the bottom, and the second nut 22 is integrally processed with the lower wedge ring 32 at the top, and the wedge teeth 7 for cooperation are integrally processed on the adjacent sides of the upper wedge ring 31 and the lower wedge ring 32, when the second nut 22 is tightened, because of the arrangement of the upper wedge ring 31 and the lower wedge ring 32, the wedge teeth 7 on the adjacent sides of the two are engaged and locked, the thickening amount of the wedge ring in the axial direction is greater than the climbing amount of the thread in the axial direction, thereby increasing the axial pre-tightening force of the screw rod 12, and effectively preventing the loosening of the screw rod 12 due to vibration.

[0030] The inner wall of the stop washer 42 is fixedly installed with the inner side teeth 5, the surface of the screw rod 12 is provided with a strip-shaped limiting groove 6, and the surface of the inner side teeth 5 is slidably installed in the limiting groove 6;

[0031] Specifically, the bolt 1 is installed on the aircraft component, the stop washer 42 is first sleeved on the screw rod 12, wherein when the stop washer 42 is installed, the inner side teeth 5 on the inner wall of the stop washer 42 are located in the limiting groove 6 on the surface of the screw rod 12 and slide, after the stop washer 42 is installed, the first nut 21 is installed, after the first nut 21 is fastened, the clamping block 43 on the outer surface of the stop washer 42 is bent, the clamping block 43 is bent into the clamping groove 41, thereby achieving the anti-loosening protection effect.

[0032] The wedge-shaped anti-loosening piece 3 comprises the upper wedge ring 31 integrally processed at the bottom of the first nut 21, the top of the second nut 22 is integrally processed with the lower wedge ring 32, and the wedge teeth 7 for cooperation are integrally processed on the adjacent sides of the upper wedge ring 31 and the lower wedge ring 32;

[0033] Further, the second nut 22 is installed on the screw rod 12, because the first nut 21 is integrally processed with the upper wedge ring 31 at the bottom, and the second nut 22 is integrally processed with the lower wedge ring 32 at the top, and the wedge teeth 7 for cooperation are integrally processed on the adjacent sides of the lower wedge ring 32 and the upper wedge ring 31, when the second nut 22 is tightened, because of the arrangement of the upper wedge ring 31 and the lower wedge ring 32, the wedge teeth 7 on the adjacent sides of the two are engaged and locked, the thickening amount of the wedge ring in the axial direction is greater than the climbing amount of the thread in the axial direction, thereby increasing the axial pre-tightening force of the screw rod 12, and effectively preventing the loosening of the screw rod 12 due to vibration.

[0034] The inside of the screw cap 11 is provided with a reserved hole 8 for wire penetration;

[0035] The inside of the screw cap 11 is provided with a reserved hole 8 for wire penetration, which can be used for wire penetration between the plurality of screw caps 11, further preventing the rotation of the screw cap 11.

[0036] The surface of the second nut 22 is provided with two through holes 9, and the inside of the screw rod 12 is provided with a rectangular groove 10, and the two through holes 9 are used in cooperation with the rectangular groove 10;

[0037] It is worth noting that the wire is penetrated through one side of the through hole 9, and then penetrated through the other through hole 9, and the two ends of the wire are penetrated through the rectangular groove 10 together, thereby providing auxiliary relaxation protection for the second nut 22.

[0038] The device installs the bolt 1 on the aircraft part, first, the stop washer 42 is sleeved on the screw rod 12, wherein, when the stop washer 42 is installed, the inside teeth 5 on the inner wall of the stop washer 42 are located in the limiting groove 6 on the surface of the screw rod 12 and slide, after the stop washer 42 is installed, the first nut 21 is installed, after the first nut 21 is fastened, the clamping block 43 on the outer surface of the stop washer 42 is bent, the clamping block 43 is bent into the clamping groove 41, thereby achieving the anti-loose protection effect, and the second nut 22 is installed on the screw rod 12, since the bottom of the first nut 21 is integrally processed with the upper wedge-shaped ring 31, and the top of the second nut 22 is integrally processed with the lower wedge-shaped ring 32, and the side adjacent to the lower wedge-shaped ring 32 and the upper wedge-shaped ring 31 is integrally processed with the wedge-shaped tooth part 7 used in cooperation, when the second nut 22 is tightened, since the upper wedge-shaped ring 31 and the lower wedge-shaped ring 32 are arranged, the wedge-shaped tooth parts 7 on the adjacent sides of the two are engaged and locked, the thickness of the wedge-shaped ring in the axial direction is greater than the amount of the thread climbing in the axial direction, thereby increasing the axial pre-tightening force of the screw rod 12, and effectively preventing the loosening of the screw rod 12 due to vibration.

[0039] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An anti-loosening ultra-precision screw for an aircraft, characterized in that, The utility model relates to a bolt (1) and nut block (2) for preventing loosening, which comprises the following: The bolt (1) comprises a nut (11) and a screw rod (12) integrally processed at the bottom of the nut (11), and the nut block (2) comprises a first nut (21) and a second nut (22) threaded on the surface of the screw rod (12), and a wedge-shaped anti-loosening piece (3) is arranged between the first nut (21) and the second nut (22). A loosening-preventing mechanism (4) for preventing loosening between the first nut (21) and the screw rod (12) is arranged on the surface of the first nut (21). The loosening-preventing mechanism (4) comprises six clamping grooves (41) arranged on the top surface of the first nut (21), and the six clamping grooves (41) are uniformly distributed on the outer surface of the first nut (21), a retreat-stopping washer (42) is arranged on the top of the first nut (21), the retreat-stopping washer (42) is movably sleeved on the surface of the bolt (1), a plurality of clamping blocks (43) in a radial pattern are integrally arranged on the two sides of the retreat-stopping washer (42), and the clamping blocks (43) are used in cooperation with the clamping grooves (41).

2. The anti-loosening ultra-precision screw for an aircraft according to claim 1, characterized in that: An inner tooth (5) is fixedly arranged on the inner wall of the retreat-stopping washer (42), a strip-shaped limiting groove (6) is arranged on the surface of the screw rod (12), and the surface of the inner tooth (5) is slidably arranged in the limiting groove (6).

3. The anti-loosening ultra-precision screw for an aircraft according to claim 2, characterized in that: The wedge-shaped anti-loosening piece (3) comprises an upper wedge-shaped ring (31) integrally arranged on the bottom of the first nut (21), and a lower wedge-shaped ring (32) is integrally arranged on the top of the second nut (22), and wedge-shaped tooth portions (7) used in cooperation are integrally arranged on the side adjacent to the upper wedge-shaped ring (31) and the lower wedge-shaped ring (32).

4. The anti-loosening ultra-precision screw for an aircraft according to claim 1, characterized in that: A reserved hole (8) for penetrating a wire is arranged in the nut (11).

5. The anti-loosening ultra-precision screw for an aircraft according to claim 1, characterized in that: Two through holes (9) are arranged on the surface of the second nut (22), and a rectangular groove (10) is arranged in the screw rod (12), and the two through holes (9) are used in cooperation with the rectangular groove (10).

6. The anti-loosening ultra-precision screw for an aircraft according to claim 1, characterized in that: ​

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