CN216146054U

CN216146054U - Armored cable lead-in device

Info

Publication number: CN216146054U
Application number: CN202121335281.8U
Authority: CN
Inventors: 刘洪山; 田铜钢; 唐娜
Original assignee: Weir Tianjin Fluid Industry Technology Co ltd
Current assignee: Weir Tianjin Fluid Industry Technology Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2022-03-29
Anticipated expiration: 2031-06-16

Abstract

The application discloses armoured cable entry device includes: the lead-in device body is arranged on a wire inlet hole preset on the surface of the electrical equipment or the junction box; the sealing cavity is designed by adopting an internal sealing lock nut and an armored cone in an integrated mode, the sealing cavity is assembled to one end of the leading-in device body in a spiral mode, and an internal sealing rubber ring is assembled between the sealing cavity and the leading-in device body; the pressing mechanism comprises an armored locking nut and a metal armored pressing ring, and the pressing mechanism and the sealing cavity are installed in a combined mode and used for pressing the cable armor layer; its technical essential does, adopts the integrated design with seal chamber, is different from traditional cone (unthreaded design), and direct action is on the internal seal rubber circle, and the in-process that has solved traditional cable entry device can lead to the fact excessive extrusion cable sheath at the locking armor to the internal seal for the cable inner sheath causes permanent deformation after extruding for a long time, reduces the problem of insulating properties.

Description

Armored cable lead-in device

Technical Field

The utility model belongs to the field of cable leading-in devices, and particularly relates to an armored cable leading-in device.

Background

The cable leading-in device refers to a device for leading a cable into electrical equipment without changing the explosion-proof type of the equipment;

traditional cable entry device's design is on the sealing washer including the direct action will be had rest to the toper that is used for compressing tightly the cable armor, compresses tightly the inner seal circle when compressing tightly the armor, and the drawback of traditional design can lead to the fact excessive extrusion cable sheath to the internal seal at the in-process of locking armor for the cable inner sheath is through causing permanent deformation after long-time extrusion, reduces insulating properties, causes the hidden danger.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides an armored cable leading-in device.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an armored cable lead-in device comprising:

the lead-in device body is arranged on a wire inlet hole preset on the surface of the electrical equipment or the junction box;

the sealing cavity is designed by adopting an internal sealing lock nut and an armored cone in an integrated mode, the sealing cavity is assembled to one end of the leading-in device body in a spiral mode, and an internal sealing rubber ring is assembled between the sealing cavity and the leading-in device body;

the pressing mechanism comprises an armored locking nut and a metal armored pressing ring, and the pressing mechanism and the sealing cavity are installed in a combined mode and used for pressing the cable armor layer; and

and the sealing mechanism is assembled at one end of the press-fitting mechanism, comprises an outer sealing rubber ring, a gasket and an outer sealing lock nut which are sequentially assembled and is used for tightly pressing the outer seal of the cable.

Preferably, both sides of the lead-in device body are respectively provided with a wiring port and a plurality of connecting sheets, a separation groove is formed between the connecting sheets, and each connecting sheet is used for being spirally assembled into the wire inlet hole.

Preferably, a separation groove is formed between the connecting sheets, the outer sides of the connecting sheets are sleeved with rubber rings, and the connecting sheets form a circular truncated cone-shaped structure in a state that the connecting sheets are separated from the rubber rings, and one end, far away from the wiring port, of each connecting sheet faces the wire inlet hole.

Preferably, the seal cavity can extrude the inner seal rubber ring, so that the inner seal rubber ring is tightly attached to the cable inner sheath.

Preferably, the outer side of the inner sealing rubber ring is provided with a side surface with a conical slope, and the side surface corresponds to one end of the leading-in device main body.

Preferably, the metal armored pressure ring is sleeved at one end of the seal cavity, and after the seal cavity and the armored locking nut are mutually inserted, the metal armored pressure ring can be tightly attached to the inner wall of the armored locking nut and the outer wall of the seal cavity.

Compared with the prior art, the utility model provides an armored cable lead-in device, which has the following beneficial effects:

firstly, under the combined action of the lead-in device main body and the seal cavity, the inner seal rubber ring can move along the conical gradient to the direction of the lead-in device main body, so that the extrusion stress area of the cable inner sheath can be effectively increased, and the cable sheath is prevented from being damaged by pressure due to a certain point of stress;

secondly, the seal cavity is integrally designed, is different from a traditional conical body (a thread-free design), and directly acts on the inner seal rubber ring, so that the problems that the inner seal of the traditional cable lead-in device excessively extrudes a cable sheath in the process of locking an armor layer, the cable sheath is permanently deformed after being extruded for a long time, and the insulating property is reduced are solved;

thirdly, a connecting sheet and a rubber ring are arranged at one end of the leading-in device main body, and after the leading-in device main body is connected with the wire inlet holes, the device can be connected with the wire inlet holes of different specifications by utilizing the distribution design of each connecting sheet, so that the use flexibility of the whole device is reflected.

Drawings

FIG. 1 is an exploded view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a lead-in device body of the present invention;

fig. 3 is a schematic structural view of the inner sealing rubber ring of the utility model.

Reference numerals: 1. introducing a device body; 2. an inner sealing rubber ring; 3. sealing the cavity; 4. a metal armored compression ring; 5. armoured lock nuts; 6. the outer seal rubber ring; 7. a gasket; 8. the locking nut is sealed externally; 9. a wiring port; 10. connecting sheets; 11. separating the grooves; 12. and (5) a rubber ring.

Detailed Description

The following further describes a specific embodiment of the armored cable lead-in device according to the present invention with reference to fig. 1. An armored cable lead-in device of the present invention is not limited to the description of the following embodiments.

This embodiment provides a specific structure of an armored cable lead-in apparatus, as shown in fig. 1 to 3, which includes:

the lead-in device comprises a lead-in device body 1, a lead-in device and a lead-in device, wherein the lead-in device body is arranged on a wire inlet hole preset on the surface of an electrical appliance or a junction box;

the sealing cavity 3 is designed by adopting an inner sealing lock nut and an armored cone in an integrated mode, the sealing cavity 3 is spirally assembled to one end of the leading-in device body 1, and an inner sealing rubber ring 2 is assembled between the sealing cavity and the leading-in device body 1;

above-mentioned adopt the integrated design with seal chamber 3, be different from traditional conical body (unthreaded design), direct action on interior sealing rubber circle 2, the design of having solved traditional cable entry device can lead to the fact excessive extrusion cable sheath at the in-process of locking armor to the internal seal for the cable inner sheath causes permanent deformation after extruding for a long time, reduces the problem of insulating properties.

The pressing mechanism comprises an armored locking nut 5 and a metal armored pressing ring 4, and the pressing mechanism and the sealing cavity 3 are installed in a combined mode and used for pressing the cable armor layer; and

and the sealing mechanism is assembled at one end of the press-fitting mechanism and comprises an outer sealing rubber ring 6, a gasket 7 and an outer sealing lock nut 8 which are sequentially assembled, and is used for tightly pressing the outer seal of the cable.

As shown in fig. 1 and 2, both sides of the lead-in device body 1 are respectively provided with a wire connection port 9 and a plurality of connecting pieces 10, a separation groove 11 is formed between each connecting piece 10, and each connecting piece 10 is used for being spirally assembled into a wire inlet hole; the design of the separation grooves 11 is convenient for each connecting sheet 10 to deflect to a certain degree;

after the connecting piece 10 is connected with the wire inlet hole with the corresponding specification, one side of the rubber ring 12 in the state can be tightly attached to the middle part of the leading-in device main body 1, the other side of the rubber ring is tightly attached to the shell wall of the electrical equipment, and the rubber ring can be matched with a nut when inserted into one end of the connecting piece 10 in the electrical equipment and is used for fixing the whole leading-in device main body 1 and the electrical equipment.

As shown in fig. 2, a separation groove 11 is formed between each connecting piece 10, a rubber ring 12 is sleeved outside each connecting piece 10, and each connecting piece 10 is in a truncated cone-shaped structure in a state that the connecting piece 10 is separated from the rubber ring 12, and one end far away from the wire connection port 9 faces the wire inlet hole.

By adopting the technical scheme:

the connecting piece 10 and the rubber ring 12 are arranged at one end of the leading-in device main body 1, and after the leading-in device main body 1 is connected with the wire inlet holes, the device can be connected with the wire inlet holes of different specifications by means of the distribution design of the connecting pieces 10, so that the use flexibility of the whole device is reflected.

As shown in fig. 1, the sealing cavity 3 may extrude the inner sealing rubber ring 2, so that the inner sealing rubber ring 2 is tightly attached to the cable inner sheath.

As shown in fig. 3, the outer side of the inner sealing rubber ring 2 is provided with a side surface with a conical slope, and the side surface corresponds to one end of the introducing device main body 1.

By adopting the technical scheme:

under the combined action of the lead-in device main body 1 and the seal cavity 3, the inner seal rubber ring 2 can move along the conical gradient to the direction of the lead-in device main body 1, so that the extrusion stress area of the cable inner sheath can be effectively increased, and the cable sheath is prevented from being damaged by compression due to one point of stress;

because one point of the part is stressed, the fatigue deformation of the cable sheath is easily caused, and the design of the point is an improvement aiming at the current situation and meets the latest national standard cold flow prevention requirement.

As shown in fig. 1, the metal armored compression ring 4 is sleeved at one end of the sealed cavity 3, and after the sealed cavity 3 and the armored locking nut 5 are inserted into each other, the metal armored compression ring 4 can be tightly attached to the inner wall of the armored locking nut 5 and the outer wall of the sealed cavity 3.

Through carrying out the aggregate erection with seal chamber 3, metal armor clamping ring 4 and armor lock nut 5, can compress tightly the cable armor, this method design is different from traditional mounting means, and opening that can be at any time after the installation is examined whether the armor contacts well, does not influence the sealed effect that cable and equipment are connected.

The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all shall be considered as belonging to the protection scope of the utility model.

Claims

1. An armored cable entry device, comprising:

the lead-in device comprises a lead-in device body (1) which is arranged on a wire inlet hole preset on the surface of an electrical appliance or a junction box;

the sealing cavity (3) is designed by adopting an inner sealing lock nut and an armored cone in an integrated mode, the sealing cavity (3) is spirally assembled to one end of the leading-in device main body (1), and an inner sealing rubber ring (2) is assembled at a position between the sealing cavity and the leading-in device main body (1);

the pressing mechanism comprises an armored locking nut (5) and a metal armored pressing ring (4), and the pressing mechanism and the sealing cavity (3) are installed in a combined mode and used for pressing the cable armor layer; and

and the sealing mechanism is assembled at one end of the press-fitting mechanism and comprises an outer sealing rubber ring (6), a gasket (7) and an outer sealing lock nut (8) which are sequentially assembled, and is used for tightly pressing the outer seal of the cable.

2. An armored cable entry device as claimed in claim 1, wherein: the lead-in device is characterized in that a wiring port (9) and a plurality of connecting pieces (10) are respectively arranged on two sides of the lead-in device body (1), a separation groove (11) is formed between the connecting pieces (10), and each connecting piece (10) is used for being spirally assembled into the wire inlet hole.

3. An armored cable entry device as claimed in claim 2, wherein: each form between connection piece (10) and separate groove (11), and connection piece (10) outside suit is glued ring (12) connection piece (10) and glue under the state of ring (12) separation, each connection piece (10) forms round platform column structure, and keeps away from the one end of wiring mouth (9) towards the entrance hole.

4. An armored cable entry device as claimed in claim 1, wherein: the sealing cavity (3) can extrude the inner sealing rubber ring (2) to enable the inner sealing rubber ring (2) to be tightly attached to the cable inner sheath.

5. An armored cable entry device as claimed in claim 1, wherein: the outer side of the inner sealing rubber ring (2) is provided with a side face with a conical gradient, and the side face corresponds to one end of the leading-in device main body (1).

6. An armored cable entry device as claimed in claim 1, wherein: the metal armored compression ring (4) is sleeved at one end of the seal cavity body (3), the seal cavity body (3) and the armored locking nut (5) are inserted into each other, and the metal armored compression ring (4) can be tightly attached to the inner wall of the armored locking nut (5) and the outer wall of the seal cavity body (3).