CN112350249B - Protective piece for cable wall or cabin penetration - Google Patents
Protective piece for cable wall or cabin penetration Download PDFInfo
- Publication number
- CN112350249B CN112350249B CN202011213606.5A CN202011213606A CN112350249B CN 112350249 B CN112350249 B CN 112350249B CN 202011213606 A CN202011213606 A CN 202011213606A CN 112350249 B CN112350249 B CN 112350249B
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- CN
- China
- Prior art keywords
- cable
- protective
- clamp
- grommet
- groove
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0431—Wall trunking
Abstract
The invention discloses a protective piece for cable wall or cabin penetration, which comprises: the clamping band, the protective clamp, the fastener, the gasket and the protective seat; the clamping belt is used for adjusting the tightness of the protecting clamp and realizing the tightness fixation of the cable harness; the protective clamp adopts a grooving design on the structure to realize certain elastic adjustment, a soft wrapping material made of a fireproof material can be filled in the middle of the protective clamp to realize waterproof sealing, and the tail part of the protective clamp adopts an outward flanging design to prevent the cable from being rubbed to damage a cable insulating layer; the fastener is used for firmly mounting the whole through-wall cable protection piece on a firewall or a power bulkhead. The gasket is used for leveling the mounting surface of the protection clamp and has a waterproof sealing function. The protective seat has a certain inclination to play a role in waterproof sealing, and the whole wall-through cable protective piece can be arranged on a firewall or a power bulkhead in a riveting or screwing mode around the protective seat. The invention solves the problems of adjustable installation and fixation tightness, insulation, fire-resistant protection and single or multiple cable harnesses passing when the cable harnesses pass through a firewall or a power cabin.
Description
Technical Field
The invention relates to the field of cable installation, in particular to a cable installation protection assembly penetrating through a firewall or a power cabin.
Background
The condition that a cable needs to penetrate from one power cabin to another power cabin for power supply or signal transmission often exists on the helicopter; in view of the electrical properties of the cable, the installation and fixation tightness is required to be adjustable, insulation and fire-resistant protection are required, and a single or a plurality of cable harnesses simultaneously pass through the cable and meet the requirement of good maintainability.
The cable cabin penetrating structure provided by the prior art is suitable for penetrating a single high-power cable cabin and meets the sealing requirement; however, this solution is limited to the penetration of a single high-power cable and is not suitable for the fire-wall-penetrating application of an aircraft because the sealing rubber ring in its composition is a non-refractory material.
Disclosure of Invention
The invention provides a through-wall (cabin) cable protection piece which aims to solve the problems that the installation and fixation tightness is adjustable, insulation and fire-resistant protection are provided when cables and wiring harnesses pass through a firewall or a power cabin, single or a plurality of cable wiring harnesses simultaneously pass through the cable protection piece and the requirement on good maintainability is met.
In order to realize the task, the invention adopts the following technical scheme:
a grommet for a cable through-wall or through-compartment comprising a clamping band, a grommet, a liner and a grommet, wherein:
the clamping band is provided with a clamp at the end part, can form annular structures with different sizes by being fixed by the clamp after being encircled, is encircled and fixed outside the protection clamp when in use, and is used for adjusting the tightness of the protection clamp and realizing the tightness fixation of a cable harness;
the protective clip comprises a bottom plate, wherein a through groove is formed in the middle of the bottom plate, and fixing holes are distributed in the through groove along the circumferential direction; a circle of fastening belt is arranged around the through groove on one side of the bottom sheet, and a plurality of mutually independent elastic strip-shaped clamping belts are arranged in the fastening belt; the end part of each section of the clamping belt is provided with an outward flange, and the protecting clamp is divided into two parts from the middle part to form two symmetrical half protecting clamps; the protective clip is filled with refractory materials and is wrapped by waterproof materials;
the fastener is used for tightly mounting the protective piece on the firewall or the power bulkhead;
the gasket is of an annular sheet structure and is provided with a central hole, and fixing holes are distributed on the gasket;
the protective seat comprises a base plate, wherein a through mounting groove is formed in the middle of the base plate, a mounting plate is arranged on one side of the base plate, and the mounting plate is inclined relative to the base plate; the bottom edge of the mounting plate is connected to the bottom of the mounting groove, and the rest edges are connected with the edges of the mounting groove through connecting plates; the middle part of the mounting plate is provided with a cable perforation, and fixing holes are distributed around the cable perforation.
Furthermore, the top of the protective seat is provided with a wire passing groove leading to the cable through hole, and the top of the wire passing groove is detachably provided with a blocking cover; the liner is divided into two parts from the middle part to form a split structure.
Furthermore, along being on a parallel with on the fastening area the axial of logical groove is adjacent to be seted up the multistage breach, makes the fastening area forms mutually independent multistage the cassette, every section cassette can for the film is buckled to realize the elastic adjustment in certain extent.
Further, the inclination angle of the mounting plate relative to the base plate is not less than 5 °.
Further, the cable through hole is designed to be an oval structure.
Furthermore, the fixing holes on the bottom plate of the protection clamp, the fixing holes on the mounting plate of the protection seat and the fixing holes on the liner correspond to each other.
Further, when the guard is assembled, the end of the fastening strap on the guard clamp inside the guard seat extends beyond the firewall or power compartment surface of the installation site.
Further, the method for installing the guard comprises the following steps:
a groove is formed in a position, which needs to pass through a cable, on a firewall or a power cabin of an aircraft, and the size of the groove is not smaller than the diameter of the gasket; buckling the protection seat on one side of the opened groove and fixing, then penetrating one gasket through the end part of the cable, penetrating the end part of the cable through a cable through hole on the protection seat mounting plate, and then penetrating the other gasket; then, arranging a protection clamp on the outer sides of the two gaskets respectively to enable the cable to penetrate through the through groove on the protection clamp; a fastener sequentially penetrates through the protective clamp, the gasket, the mounting plate, the gasket on the other side and the fixing hole on the mounting plate from one side of the protective seat and is fastened through a bolt; and finally, sleeving a clamping band outside the fastening band of the protection clamp, and fastening through the clamping band to tighten the clamping band on the fastening band relative to the cable to complete installation.
Compared with the prior art, the invention has the following technical characteristics:
the wall-through (cabin) cable protection piece is composed of a protection clamp, a protection seat, a spiral clamp clamping band, a liner, a fastener and the like which are made of metal materials, wherein the protection clamp has certain shrinkage elasticity, and the tightness of the cable can be adjusted and fixed through the tightness of the spiral clamp clamping band. The invention solves the problems that the installation and fixation tightness is adjustable, the insulation and the fire resistance are prevented when the cable harness passes through the firewall or the power cabin of the aircraft, and single or a plurality of cable harnesses simultaneously pass through the cable harness and meet the requirement of good maintainability.
Drawings
FIG. 1 is an exploded view of the guard of the present invention;
fig. 2 (a) and (b) are views of the guard of the present invention at different angles in an installed state;
fig. 3 is a schematic structural view of the wire passing groove arranged on the protective seat.
The reference numbers in the figures illustrate: the device comprises a clamping band 1, a protective clamp 2, a bottom plate 21, a fastening band 22, a through groove 23, a clamping band 24, a fastening piece 3, a gasket 4, a central hole 41, a protective seat 5, a base plate 51, a mounting plate 52, a connecting plate 53, a cable perforation 54, a wire passing groove 55 and a plugging cover 56.
Detailed Description
The invention aims to provide a protective piece for a cable to pass through a wall or a cabin, aiming at the problems that the installation and fixation tightness is adjustable, insulation and fire-resistant protection are provided when a cable harness passes through an aircraft firewall or a power cabin, single or a plurality of cable harnesses simultaneously pass through and the requirement of good maintainability is met, so that the wall (cabin) passing installation protection of the cable is realized.
The invention provides a protective piece for a cable to pass through a wall or a cabin, which comprises a clamping band 1, a protective clamp 2, a fastener 3, a gasket 4 and a protective seat 5, as shown in figures 1 to 3, wherein:
the clamping strap 1 is provided with a clamp at the end part, can be fixed by the clamp to form an annular structure with different sizes after being encircled, is fixed outside the protection clamp 2 in the encircling mode during use, is used for adjusting the tightness of the protection clamp 2 and realizes tightness fixation of a cable harness.
The protection clamp 2 comprises a bottom sheet 21, wherein a through groove 23 is formed in the middle of the bottom sheet 21, and fixing holes are distributed in the through groove 23 along the circumferential direction; a circle of fastening belt 22 is arranged around the through groove 23 at one side of the bottom sheet 21; a plurality of sections of notches are adjacently formed in the fastening belt 22 along the axial direction parallel to the through groove 23, so that the fastening belt 22 forms a plurality of sections of mutually independent clamping belts 24, and each section of clamping belt 24 can be bent relative to the bottom sheet 21 to realize elastic adjustment within a certain range; the end part of each section of clamping belt 24 is designed with an outward flange to prevent the cable from being rubbed to damage the cable insulating layer; the protective clip 2 is divided into two parts from the middle part to form two symmetrical half protective clips 2, so that the installation is convenient. When the cable harness passes through the protection clamp 2, the fireproof material wrapped by the waterproof material is filled between the protection clamp 2 and the cable harness, and waterproof sealing is achieved.
And the fastening piece 3 is used for fastening and installing the whole through-wall (cabin) cable protection piece on a firewall or a power cabin wall, and sequentially penetrates through the fastening holes on the bottom sheet 21 of the protection clamp 2, the liner 4, the protection seat 5, the liner 4 on the other side of the protection seat 5 and the bottom sheet 21 of the protection clamp 2 during fastening so as to realize fastening and installation.
The gasket 4 is a ring-shaped sheet structure and is provided with a central hole 41, fixing holes are distributed on the gasket 4, and the gasket 4 can be divided into two parts from the middle part so as to be convenient to mount. Is used for leveling the mounting surface of the protection clamp 2 and has waterproof sealing function.
The protection seat 5 comprises a base plate 51, wherein a through mounting groove is formed in the middle of the base plate 51, a mounting plate 52 is arranged on one side of the base plate 51, the mounting plate 52 inclines relative to the base plate 51, and the inclination angle is not less than 5 degrees so as to adapt to the angle change of a cable harness after passing through the protection piece and avoid the damage caused by the rigid bending of the cable; the bottom edge of the mounting plate 52 is connected with the bottom of the mounting groove, and the rest edges are connected with the edges of the mounting groove through connecting plates 53. The mounting plate 52 is provided with a cable through hole 54 at the middle part, and fixing holes are distributed around the cable through hole 54. The cable through hole 54 may be designed to have an oval structure, which can increase the contact area with the cable and disperse the stress. The installation plate 52 is arranged, so that a triangular space is formed inside the protection seat 5, a waterproof sealing effect is achieved, and the whole through-wall (cabin) cable protection piece can be installed on a firewall or a power cabin wall in a riveting or screwing mode around the protection seat. The waterproof sealing device is arranged on a longitudinal fireproof wall of an airplane and plays a role in waterproof sealing; the inclination is adjustable, the adjustment of the cable trend of being convenient for.
As a further optimization of the above technical solution, the top of the protective seat 5 is provided with a wire passing groove 55 leading to the cable through hole 54, and a blocking cover 56 is detachably arranged on the top of the wire passing groove 55; the liner 4 is divided into two parts from the middle part to form a split structure. Since the protective clip 2 and the pad 4 in this example can both adopt split type structures, the cable passing groove 55 is designed on the protective seat 5, so that the cable can pass through the cable passing groove 55 from top to bottom and enter the cable through hole 54, the blocking cover 56 is fixed, the pad 4 and the protective clip 2 are arranged on two sides of the blocking cover, and finally the protective seat 5 is fixed. By adopting the design structure, the protective piece can be subsequently installed without changing the original fixed relation of the cable, and the maintenance work of the cable is greatly facilitated. When the structure of the wire passing groove 55 is not designed, the end part of the cable can pass through the protective seat 5 to be installed in the cable wiring process, so that the installation mode has higher degree of freedom, and the position of the protective seat 5 is easier to plan and design; the two mounting modes can be determined according to actual needs.
The installation method of the invention is as follows:
firstly, grooving at a position on a firewall or a power cabin of an aircraft, which needs to pass through a cable, wherein the size of the grooving is not less than the diameter of the gasket 4; buckling the protective seat 5 at one side of the opened groove and fixing, then penetrating one gasket 4 through the end part of the cable, penetrating the end part of the cable through a cable through hole 54 on a mounting plate 52 of the protective seat 5, and then penetrating the other gasket 4; then, arranging a protection clamp 2 on the outer side of each of the two gaskets 4, and enabling the cable to pass through a through groove 23 on each protection clamp 2; the fastener 3 sequentially penetrates through the protective clamp 2, the liner 4, the mounting plate 52, the liner 4 on the other side and a fixing hole on the mounting plate 52 from one side of the protective seat 5 and is fastened through bolts; finally, the clamping band 1 is sleeved outside the fastening band 22 of the protection clamp 2, and the clamping band 1 is fastened to tighten the clamping band 24 on the fastening band 22 relative to the cable, so that the installation is completed. After the protection piece is assembled, the end part of the fastening belt 22 on the protection clamp 2 positioned in the protection seat 5 extends out of the surface of a firewall or a power cabin at the installation part so as to avoid the abrasion damage of the firewall and a slot on the power cabin to a cable.
When the cable harness penetrates through a firewall or a power cabin of an aircraft, the cable is supported by the protective clamp 2, and the spiral clamping band 1 is adjusted to realize the tightness fixation of the cable harnesses with different thicknesses. The fire-resistant protection device is made of metal materials, and can realize fire-resistant protection and good maintenance by installing and disassembling the standard part fastening piece 3.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application, and are intended to be included within the scope of the present application.
Claims (7)
1. A grommet for a cable through-wall or through-cabin, comprising a clamping band (1), a grommet (2), a liner (4) and a grommet (5), wherein:
the clamping band (1) is provided with a clamp at the end part, can form annular structures with different sizes by being fixed through the clamp after being encircled, is encircled and fixed outside the protecting clamp (2) when in use, and is used for adjusting the tightness of the protecting clamp (2) and realizing the tightness fixation of a cable harness;
the protective clamp (2) comprises a bottom sheet (21), a through groove (23) is formed in the middle of the bottom sheet (21), and fixing holes are distributed in the through groove (23) along the circumferential direction; a circle of fastening belt (22) is arranged around the through groove (23) at one side of the bottom sheet (21), and a plurality of mutually independent and elastic strip-shaped clamping belts (24) are arranged in the fastening belt (22); the end part of each section of the clamping belt (24) is designed with an outward flange, and the protecting clamp (2) is divided into two parts from the middle part to form two symmetrical half protecting clamps (2); the protective clip (2) is filled with refractory materials and is wrapped by waterproof materials; a plurality of sections of gaps are adjacently formed in the fastening belt (22) along the axial direction parallel to the through groove (23), so that the fastening belt (22) forms a plurality of sections of clamping belts (24) which are mutually independent, and each section of clamping belt (24) can be bent relative to the bottom sheet (21) to realize elastic adjustment in a certain range;
the fastener (3) is used for tightly mounting the protective piece on the firewall or the power bulkhead;
the gasket (4) is of an annular sheet structure and is provided with a central hole (41), and fixing holes are distributed on the gasket (4);
the protective seat (5) comprises a base plate (51), a through mounting groove is formed in the middle of the base plate (51), a mounting plate (52) is arranged on one side of the base plate (51), and the mounting plate (52) inclines relative to the base plate (51); the bottom edge of the mounting plate (52) is connected to the bottom of the mounting groove, and the rest edges are connected with the edges of the mounting groove through a connecting plate (53); the middle part of the mounting plate (52) is provided with a cable through hole (54), and fixing holes are distributed around the cable through hole (54).
2. The grommet for cable through-walls or through-cabins according to claim 1, characterized in that a wire passage slot (55) leading to the cable through-hole (54) is opened at the top of the grommet (5), and a plugging cover (56) is detachably disposed at the top of the wire passage slot (55); the liner (4) is divided into two parts from the middle part to form a split structure.
3. A grommet for cable entries in a wall or through a compartment as defined in claim 1, wherein the mounting plate (52) is inclined at an angle of not less than 5 ° relative to the base plate (51).
4. A grommet for a cable through-wall or through-hatch according to claim 1, characterized in that the cable perforations (54) are designed as an oval structure.
5. A grommet for a cable through-wall or through-cabin as in claim 1, wherein the fixing holes on the base sheet (21) of the grommet (2), the fixing holes on the mounting plate (52) of the grommet (5), and the fixing holes on the gasket (4) correspond to each other.
6. A grommet for a cable through-wall or through-hatch according to claim 1, characterized in that the end of the fastening strap (22) on the grommet (2) located inside the grommet (5) extends beyond the firewall or power hatch surface of the installation site when the grommet is assembled.
7. A grommet for a cable through-wall or through-hatch as set forth in claim 1, wherein the method of installing the grommet comprises:
a groove is formed in a position, which needs to pass through a cable, on a firewall or a power cabin of the aircraft, and the size of the groove is not smaller than the diameter of the gasket (4); buckling the protective seat (5) at one side of the opened groove and fixing, then penetrating one gasket (4) through the end part of the cable, penetrating the end part of the cable through a cable through hole (54) on a mounting plate (52) of the protective seat (5), and then penetrating the other gasket (4); then, arranging a protection clamp (2) on the outer sides of the two gaskets (4) respectively, and enabling the cable to penetrate through a through groove (23) on the protection clamp (2); a fastener (3) sequentially penetrates through fixing holes in the protective clamp (2), the gasket (4), the mounting plate (52), the gasket (4) on the other side and the mounting plate (52) from one side of the protective seat (5) and is fastened through bolts; and finally, sleeving a clamping band (1) outside a fastening band (22) of the protective clamp (2), and fastening through the clamping band (1) to tighten a clamping band (24) on the fastening band (22) relative to the cable to complete installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011213606.5A CN112350249B (en) | 2020-11-03 | 2020-11-03 | Protective piece for cable wall or cabin penetration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011213606.5A CN112350249B (en) | 2020-11-03 | 2020-11-03 | Protective piece for cable wall or cabin penetration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112350249A CN112350249A (en) | 2021-02-09 |
| CN112350249B true CN112350249B (en) | 2022-06-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011213606.5A Active CN112350249B (en) | 2020-11-03 | 2020-11-03 | Protective piece for cable wall or cabin penetration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112350249B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113889923B (en) * | 2021-09-22 | 2023-04-18 | 安徽电缆股份有限公司 | Auxiliary fixing and clamping device for cable connection |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1115128A (en) * | 1994-05-06 | 1996-01-17 | 赛特采矿公司 | Connecteur electrique omnidirectionnel a plusieurs phases |
| TWM357111U (en) * | 2008-08-20 | 2009-05-11 | Avc Ind Corp | External box of waterproof tension connection plug |
| JP2016200225A (en) * | 2015-04-10 | 2016-12-01 | 住友電装株式会社 | Band clamp and silencer fitting structure for wire harness using band clamp |
| CN111585228A (en) * | 2020-05-13 | 2020-08-25 | 青岛东卡环保工程技术有限公司 | Forced environment cable through-wall quick sealing joint and installation method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6948976B2 (en) * | 2004-03-01 | 2005-09-27 | Andrew Corporation | Cable and apparatus interface environmental seal |
| US8314350B1 (en) * | 2009-06-18 | 2012-11-20 | Arlington Industries, Inc. | Electrical cable entry device with flexible slotted insert |
| DE202013006413U1 (en) * | 2013-07-17 | 2014-10-22 | Leoni Bordnetz-Systeme Gmbh | Device for electrically contacting a shielding of an electrical cable to a housing and prefabricated electrical cable |
| DE102015208395A1 (en) * | 2015-05-06 | 2016-11-10 | Eaton Protection Systems Ip Gmbh & Co. Kg | Cable / conduit entry |
| CN206992640U (en) * | 2017-04-26 | 2018-02-09 | 浙江时电科技有限公司 | A kind of plugging device |
| CN208939356U (en) * | 2018-09-21 | 2019-06-04 | 陈君志 | A kind of cable aperture protection structure |
| US10992122B2 (en) * | 2019-04-23 | 2021-04-27 | Raytheon Company | Configurable pressure bulkhead feedthrough |
| CN209981974U (en) * | 2019-06-26 | 2020-01-21 | 建平县万兴膨润土有限责任公司 | Open-circuit prevention type monitoring electric cabinet for mining belt conveyor |
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2020
- 2020-11-03 CN CN202011213606.5A patent/CN112350249B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1115128A (en) * | 1994-05-06 | 1996-01-17 | 赛特采矿公司 | Connecteur electrique omnidirectionnel a plusieurs phases |
| TWM357111U (en) * | 2008-08-20 | 2009-05-11 | Avc Ind Corp | External box of waterproof tension connection plug |
| JP2016200225A (en) * | 2015-04-10 | 2016-12-01 | 住友電装株式会社 | Band clamp and silencer fitting structure for wire harness using band clamp |
| CN111585228A (en) * | 2020-05-13 | 2020-08-25 | 青岛东卡环保工程技术有限公司 | Forced environment cable through-wall quick sealing joint and installation method thereof |
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| Publication number | Publication date |
|---|---|
| CN112350249A (en) | 2021-02-09 |
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