Disassembling and assembling sleeve matched with cross recess nut

Abstract

The utility model belongs to the field of aviation repair, and particularly relates to a dismounting sleeve matched with a cross recess nut, the dismounting sleeve is used for dismounting the cross recess nut, and square teeth and a first counter bore are arranged on the dismounting sleeve; the square teeth are used for being matched with square grooves in the cross-recessed nut, then the dismounting sleeve is rotated, and dismounting of the cross-recessed nut is achieved. Compared with the prior art, the cross recess nut can be quickly disassembled and assembled without damaging devices near the cross recess nut, such as a fuse seat.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of aviation repair field, especially a kind of dismounting sleeve suitable for cross slot nut. BACKGROUND

[0002] BZ-3D fuse holder is composed of seat body and cross slot nut, inner thread is arranged in the circle of cross slot nut, and it is connected with the outer thread of seat body;When replacing it in repair process, cross slot nut must be unscrewed first, so that seat body can be removed from panel, and the branch wrench for dismounting cross slot nut is easy to produce lateral slip in use process, and fuse holder is damaged.

[0003] In prior art, branch wrench is used to dismount cross slot nut of fixed BZ-3D fuse holder in repair process, and the head of branch wrench only has two round teeth mutually at 180 °, and lateral slip is easy to produce if not handled properly, and it is out of cross slot nut groove, so that round teeth touch the fuse holder of bakelite material, and it is easy to cause damage, and replacement of new fuse holder additionally increases repair cost. Through optimization of original tool, special sleeve is designed, and it is used for dismounting cross slot nut in cooperation with 6.3mm sleeve wrench, so that fuse holder damage in repair process is avoided. In addition, fish mouth pliers can also be used to clamp the outer circle of cross slot nut, and it is dismounted, since the thickness of cross slot nut is relatively thin, and it is also easy to touch the fuse holder of bakelite material if not handled properly, and it is easy to cause damage, and if clamping force is small, slip is also produced, and the gear tooth portion of outer circle of cross slot nut is also damaged.

[0004] In the above dismounting method, the volume of tool used is large, and when cross slot nut is dismounted in relatively narrow position, efficiency is low, and device damage is also easy to cause. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of dismounting sleeve suitable for cross slot nut, and the quick dismounting of cross slot nut is realized while not damaging the device near cross slot nut, such as not damaging fuse holder.

[0006] The technical solution for realizing the utility model is as follows: a kind of dismounting sleeve suitable for cross slot nut, the dismounting sleeve is used to dismount cross slot nut, and square tooth and first counterbore are arranged on the dismounting sleeve;Square tooth is used to cooperate with the square slot on cross slot nut, and then the dismounting sleeve is rotated, to realize the dismounting of cross slot nut.

[0007] Further, first counterbore is arranged on the dismounting sleeve, to reserve space for the upper thread of fuse holder seat body, and then square tooth can be closely matched with the square slot on cross slot nut.

[0008] Further, a standard interface is arranged on the upper end face of the dismounting sleeve, and is used in cooperation with a standard sleeve wrench.

[0009] Further, the height and width of the square teeth are less than the slot size of the cross slot nut.

[0010] Further, the standard interface is a square hole with a size of 6.5mm*6.5mm.

[0011] Further, the width of the square teeth 1-3 is 1.2mm, and the height is 1mm.

[0012] Compared with the prior art, the utility model has the following remarkable advantages:

[0013] (1) The utility model provides a dismounting sleeve matched with a cross slot nut, adopts square teeth with 90-degree uniform distribution, the shape is consistent with the slot position of the cross slot nut, and no lateral displacement and slip are caused in the rotating process.

[0014] (2) The utility model provides a dismounting sleeve matched with a cross slot nut, a standard interface is arranged on the top of the sleeve, is used in cooperation with a standard sleeve wrench, and forms a set tool.

[0015] (3) The utility model provides a dismounting sleeve matched with a cross slot nut, is simple in structure, convenient to operate, and is widely applied, and the scheme can be applied to the dismounting of other cross slot nuts of the same type. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of a cross slot nut.

[0017] Figure 2 It is a front structure schematic view of a dismounting sleeve matched with a cross slot nut.

[0018] Figure 3 It is a square tooth structure schematic view of a dismounting sleeve matched with a cross slot nut.

[0019] Figure 4 It is an interface structure schematic view of a dismounting sleeve matched with a cross slot nut.

[0020] Figure 5 It is a use schematic view of a dismounting sleeve matched with a cross slot nut. DETAILED DESCRIPTION

[0021] The terms used in the present application are only for the purpose of illustrating the embodiments of the present application, and are not intended to limit the present application. Figures 1-5 Some embodiments of the present application are described in detail.

[0022] The utility model provides a kind of dismounting sleeve of cross slot nut.

[0023] The cross slot nut dismounting sleeve 1 is a rotating part, and the bottom end face of the dismounting sleeve 1 is provided with four evenly arranged square teeth 1-3, which are arranged in the same direction as the slot opening of the cross slot nut 2, and the height and width of the square teeth 1-3 are slightly smaller than the slot opening size of the cross slot nut 2.

[0024] The dismounting sleeve 1 is provided with a first counterbore 1-2, which is used to reserve space for the upper threaded part of the seat body of the BZ-3D fuse holder when in use (i.e., the upper threaded part of the seat body falls into the first counterbore 1-1 when in use), so that the square teeth 1-3 can tightly fit the square slot on the cross slot nut 2.

[0025] The upper end face of the dismounting sleeve 1 is provided with a standard interface 1-1, which is used to be matched with the standard sleeve wrench for use, forming a set of tools for easy dismounting.

[0026] In this embodiment, the standard interface 1-1 is a square hole with a size of 6.5 mm x 6.5 mm, and a round hole is formed in the wall of the square hole for matching with the 6.3 mm standard sleeve wrench.

[0027] In this embodiment, the width of the square teeth 1-3 is 1.2 mm, and the height is 1 mm.

[0028] The cross slot nut dismounting sleeve 1 is made of steel bar 40Cr, which has sufficient rigidity to meet the functional requirements, and the surface is treated with nickel plating to achieve wear resistance and corrosion resistance.

[0029] The use process of the cross slot nut dismounting sleeve 1 is as follows: when repairing the fuse holder, first install the cross slot nut dismounting sleeve 1 on the 6.3 mm standard sleeve wrench, and then align the four square teeth 1-3 of the sleeve with the four slot openings on the cross slot nut, and perform the rotating operation.

[0030] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments without departing from the principles and purposes of the present application within the scope of the present application.

Claims

1. A disassembly and assembly sleeve adapted to a cross-grooved nut, characterized in that, The disassembly and assembly sleeve is used to disassemble and assemble the cross-shaped nut. The disassembly and assembly sleeve is provided with square teeth and a first countersunk hole. The square teeth are used to cooperate with the square groove on the cross-shaped nut, thereby rotating the disassembly and assembly sleeve to realize the disassembly and assembly of the cross-shaped nut. The disassembly and assembly sleeve is provided with a first countersunk hole to reserve space for the upper thread of the fuse holder, so that the square teeth can be tightly cooperated with the square groove on the cross-shaped nut.

2. The disassembly and assembly sleeve for adapting to a cross-grooved nut according to claim 1, characterized in that, The upper end face of the socket has a standard interface for use with external standard socket wrenches.

3. The disassembly and assembly sleeve for adapting to a cross-grooved nut according to claim 1, characterized in that, The height and width of the square teeth are smaller than the slot size of the cross-grooved nut.

4. The disassembly and assembly sleeve for adapting to a cross-grooved nut according to claim 2, characterized in that, The standard interface is a 6.5mm × 6.5mm square hole.

5. The disassembly and assembly sleeve for adapting to a cross-grooved nut according to claim 3, characterized in that, The square teeth 1-3 are 1.2mm wide and 1mm high.

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