CN110299684B

CN110299684B - Metal hoop device for fixing cable

Info

Publication number: CN110299684B
Application number: CN201910541007.7A
Authority: CN
Inventors: 石强; 田治国; 徐蓉瑞; 涂凯; 杨俊国; 王博; 余秋华; 马浩
Original assignee: Jiangxi Hongdu Aviation Industry Group Co Ltd
Current assignee: Jiangxi Hongdu Aviation Industry Group Co Ltd
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2021-11-26
Anticipated expiration: 2039-06-21
Also published as: CN110299684A

Abstract

A metal hoop device for fixing a cable is characterized in that a hoop base body before forming is of a structure that one end of the hoop base body is provided with a hoop prefabricated hole, the end base body is thickened, the other end of the hoop base body is not thickened, an installation through hole which is prepared by using a drill bit and is guided by the hoop prefabricated hole is arranged on the bent hoop, and the cable is wrapped in the hoop; meanwhile, the inner side of the hollow screw is provided with an internal thread, the outer side of the hollow screw is provided with an external thread, the tail part of the internal thread of the hollow screw is provided with a screw internal thread self-locking structure, and the fastening standard component is arranged on the external thread of the hollow screw after passing through the clamp prefabricated hole and the installation through hole, so that the danger that the clamp falls into a cabin to form a redundant object is effectively eliminated, and the installation efficiency of the clamp device is improved; the connecting piece penetrates through the cabin body and is screwed into the internal thread of the hollow screw until the connecting piece is screwed through the internal thread self-locking structure of the screw, and the problem of cable fixing failure possibly caused by missile launching and flight process vibration is effectively solved.

Description

Metal hoop device for fixing cable

Technical Field

The invention relates to the technical field of assembly design, in particular to a metal hoop device for fixing a cable.

Background

Aviation products often use metal clips to secure cables to product structures, and a typical metal clip installation process for a small diameter missile is as follows: firstly, prefabricating and forming a hoop-wrapped cable, then making holes in the cabin body in the radial direction, using bolts to extend into the cabin body from the outside of the cabin body and penetrate through the hoop holes, and fastening the metal hoop in the cabin body by adopting standard components such as flat pads, elastic pads and nuts; however, because cabin body inner space is narrow and small, the field of vision is limited, and the metal clamp has elasticity, and the less common size of clamp standard component size is M3/4/5, when the operator bare-handed installation standard component according to current method, need overcome the elastic deformation of clamp and compress tightly the laminating back with the clamp, install the clamp standard component again, the operation is very difficult, and the error rate is high, and in the clamp standard component easily fell into the cabin section simultaneously, the back of dropping is difficult to fix a position, the clearance. According to incomplete statistics of a production field, the once installation success rate of the clamp standard component in the cabin section is less than 20%, multiple times of adjustment and installation are needed, the installation time of a single clamp is as long as 20-30 minutes when the sight is blocked, the risk of generating redundancy is high, and the troubleshooting is difficult.

Disclosure of Invention

The present invention is directed to a metal clip device for fixing a cable, which solves the above-mentioned problems of the related art.

The technical problem solved by the invention is realized by adopting the following technical scheme:

a metal hoop device for fixing a cable comprises a hoop formed by bending a hoop base body before forming, a fastening standard component and a connecting component for fastening the hoop and a cabin body, wherein the hoop base body before forming is of a strip structure, one end of the strip structure is provided with a hoop prefabricated hole, the end base body is thickened, the other end of the strip structure is not thickened, a transition arc for playing a crack-stopping role is arranged between the thickened end and the non-thickened end, an installation through hole which is prepared by using a drill bit and is guided by the hoop prefabricated hole is arranged on the hoop formed by bending, and the cable is wrapped in the hoop; the screwhead portion of cavity screw is 120 countersunk head structures, and it has a word screwdriver groove to open, be provided with the internal thread in the inboard of cavity screw simultaneously, be provided with the external screw thread in the outside of cavity screw, cavity screw internal thread afterbody is provided with screw internal thread self-locking structure, screw internal thread self-locking structure is for flattening the preset deformable body that certain deflection was realized through the cylinder end with the cavity screw, fastening standard component is by the nut, bullet pad and flat pad are constituteed, fastening standard component is installed on the cavity screw external screw thread after passing clamp prefabricated hole and installation through-hole, the connecting piece passes the clamp fixed orifices of the internal setting of cabin, the internal thread of screw in cavity screw, the screw internal thread self-locking structure of afterbody of hollow screw internal thread is crossed until having revolved.

In the invention, the specific use steps are as follows:

1) firstly, winding a clamp base body before forming to a thickened end provided with a clamp prefabricated hole, bending to form a clamp according to the diameter requirement of a cable, and then, taking the clamp prefabricated hole as a guide, and preparing an installation through hole at the non-thickened end of the clamp by using a drill bit;

2) a clamp is used for wrapping and tightening the cable, a hollow screw penetrates through the clamp prefabricated hole and the mounting through hole, and then the flat pad, the elastic pad and the nut are mounted on the external thread of the hollow screw to complete the pre-fixing of the clamp and the cable;

3) the cable and the hoop to be pre-fixed are placed at the hoop fixing hole in the cabin body, the connecting piece is used for penetrating through the hoop fixing hole in the cabin body, the screw is screwed into the internal thread of the hollow screw, and after the screw is screwed through the screw internal thread self-locking structure at the tail part of the internal thread of the hollow screw, the installation of the hoop device is completed.

Has the advantages that:

1) the invention adopts the mode of pre-fixing the hoop and the cable, effectively eliminates the danger that the hoop falls into the cabin and becomes redundant, and is particularly important for aviation products;

2) the invention has the self-locking function, and effectively solves the problem of cable fixation failure possibly caused by missile launching and flight process vibration;

3) the clamp and the cable can be pre-fixed outside the cabin, so that the installation of the clamp device in a narrow space is avoided, the one-time installation success rate of the clamp device can be improved to more than 99 percent, and the rework amount is reduced;

4) the invention effectively improves the installation efficiency of the hoop device and greatly reduces the installation time of the hoop device.

Drawings

FIG. 1 is a schematic view of a clip formed by bending a clip base prior to molding in accordance with a preferred embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a preferred embodiment of the present invention.

Fig. 3 is a schematic structural view of a hollow screw according to a preferred embodiment of the present invention.

Fig. 4 is a sectional view taken along line I in fig. 3.

FIG. 5 is a view of the pre-installation of the clip and cable in the preferred embodiment of the invention.

Fig. 6 is a schematic view of the installation state of the preferred embodiment of the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

Referring to fig. 1-5, a metal clamp device for fixing a cable includes a clamp 1 formed by bending a clamp base body 1 'before forming, a clamp prefabricated hole 1a, an installation through hole 1b, a cable 2, a hollow screw 3, a screw internal thread self-locking structure 3a, a nut 4, an elastic cushion 5, a flat cushion 6, a screw 7 and a cabin body 8, wherein the clamp base body 1' before forming is a strip structure with one end provided with the clamp prefabricated hole 1a, the end base body is thickened and the other end base body is not thickened, a transition arc for performing a crack-stopping function is arranged between the thickened end and the non-thickened end, the installation through hole 1b prepared by using a drill bit with the clamp prefabricated hole 1a as a guide is arranged on the clamp 1, and the cable 2 is wrapped in the clamp 1; the head of the hollow screw 3 is of a 120-degree countersunk structure, a straight-line screwdriver groove is formed, an internal thread is arranged on the inner side of the hollow screw 3, an external thread is arranged on the outer side of the hollow screw 3, an internal thread self-locking structure 3a is arranged at the tail of the internal thread of the hollow screw 3, the internal thread self-locking structure 3a is a preset deformation body which is realized by flattening the cylindrical end of the hollow screw 3 by a certain deformation amount, the nut 4, the elastic pad 5 and the flat pad 6 form a fastening standard component M, the fastening standard component M is arranged on the external thread of the hollow screw 3 after penetrating through the clamp prefabricating hole 1a and the installation through hole 1b, the screw 7 penetrates through a clamp fixing hole arranged in the cabin body 8, and is screwed into the internal thread of the hollow screw 3 until the internal thread self-locking structure 3a at the tail of the internal thread of the hollow screw 3 is screwed.

In this embodiment, the specific steps are as follows:

1) winding a clamp base body 1' before forming to a thickened end provided with a clamp prefabricated hole 1a according to the drawing shown in figure 1, bending to form a clamp 1 according to the diameter requirement of a cable 2, and then using the clamp prefabricated hole 1a as a guide and using a drill to prepare an installation through hole 1b of a non-thickened end of the clamp;

2) a clamp 1 is used for wrapping a cable 2 tightly, a hollow screw 3 penetrates through a clamp prefabricated hole 1a and an installation through hole 1b, and then a flat pad 6, an elastic pad 5 and a nut 4 are installed on the external thread of the hollow screw 3, so that the clamp and the cable are fixed in advance;

3) the cable and the hoop to be pre-fixed are placed in a hoop fixing hole in the cabin body 8, the bolt 7 penetrates through the hoop fixing hole in the cabin body 8 and is screwed into the internal thread of the hollow bolt 3, and after the bolt 7 is screwed through the screw internal thread self-locking structure 3a at the tail part of the internal thread of the hollow bolt 3, the installation of the hoop device is completed.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A metal hoop device for fixing a cable is characterized by comprising a hoop formed by bending a hoop base body before forming, a fastening standard component and a connecting component for fastening the hoop and a cabin body, wherein the hoop base body before forming is of a structure that one end is provided with a hoop prefabricated hole, the end base body is thickened, the other end base body is not thickened, an installation through hole prepared by using a drill bit as a guide for the hoop prefabricated hole is arranged on the hoop formed by bending, and the cable is wrapped in the hoop; meanwhile, an internal thread is arranged on the inner side of the hollow screw, an external thread is arranged on the outer side of the hollow screw, a screw internal thread self-locking structure is arranged at the tail part of the internal thread of the hollow screw, and the screw internal thread self-locking structure is a preset deformation body realized by flattening the cylindrical end of the hollow screw for a certain deformation amount; the fastening standard component is arranged on the external thread of the hollow screw after penetrating through the clamp prefabricated hole and the mounting through hole, and the connecting component penetrates through the cabin body and is screwed into the internal thread of the hollow screw until the connecting component is screwed through the screw internal thread self-locking structure at the tail part of the internal thread of the hollow screw; meanwhile, a clamp fixing hole for the connecting piece to pass through is formed in the cabin body;

the specific use steps are as follows:

2. The metal clip assembly of claim 1 wherein the clip base is a strip prior to molding.

3. The metal clip assembly of claim 1 wherein a transition arc is provided between the thickened end and the non-thickened end of the clip base prior to molding to provide crack arrest.

4. The metal clip assembly of claim 1 wherein the head of the hollow screw is 120 ° countersunk.

5. The metal clip device of claim 1, wherein the head of the hollow screw has a straight screw slot.

6. The metal clip device of claim 1 wherein the fastening standard comprises a nut, a spring washer and a flat washer.