CN215934387U

CN215934387U - Cable lead-in device

Info

Publication number: CN215934387U
Application number: CN202121333777.1U
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: 2022-03-01
Anticipated expiration: 2031-06-16

Abstract

The application discloses 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 connecting pipe assembly is used for inserting a flexible cable protection pipe and comprises a clamp spring, a sealing locking nut and a rear connecting pipe device which are sequentially combined, and one end of the rear connecting pipe device is inserted into the sealing locking nut; the device has the technical key points that the traditional integrated form is changed, the sealing lock nut and the rear pipe connecting device are in split design, and the rear pipe connecting device freely rotates in the sealing lock nut, so that the problems that the flexible pipe is easy to twist and the toughness of the flexible pipe is damaged in the installation process are solved; the cable clamping assembly is designed in the rear pipe connecting device, after the threaded pipe is fastened in the rear pipe connecting device, each clamping plate can be deformed, the rubber pad is attached to the cable jacket, the cable jacket is positioned and clamped, and the cable and the device are prevented from being separated to a certain extent.

Description

Cable lead-in device

Technical Field

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

Background

Cables are mostly made of one or more mutually insulated conductors and an outer insulating protective layer, which is a conductor for transmitting power or information from one place to another; or a cable similar to a rope formed by twisting a plurality of or a plurality of groups of leads (at least two leads in each group), wherein the leads in each group are mutually insulated and are usually twisted around a center, and the whole outer surface is coated with a highly-insulated coating layer; the cable has the characteristics of internal electrification and external insulation; in the case of cable lead-in use, it is necessary to use a cable lead-in device, which is a device for leading a cable into electrical equipment without changing the explosion-proof type of the equipment.

However, most of the conventional cable leading-in devices are integrated structures, specifically, the sealing lock nut and the rear connecting pipe device are integrated structures, so that when a worker installs the cable leading-in device, the whole cable leading-in device can rotate along with the rotation of the flexible pipe, the flexible pipe is easily twisted in the installation process, and the toughness of the cable leading-in device is damaged.

SUMMERY OF THE UTILITY MODEL

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

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

a cable entry 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 connecting pipe assembly is used for inserting a flexible cable protection pipe and comprises a clamp spring, a sealing locking nut and a rear connecting pipe device which are sequentially combined, and one end of the rear connecting pipe device is inserted into the sealing locking nut and can freely rotate; and

a sealing rubber ring fitted to a position between the lead-in device body and the junction pipe assembly.

Preferably, the inner surface and the outer surface of the leading-in device main body are both provided with thread grooves, and the middle part of the leading-in device main body is welded with a stop ring.

Preferably, the outer surface of one end of the rear pipe connecting device is provided with a convex ring, the clamp spring can be sleeved on one side of the convex ring of the rear pipe connecting device, and one side of the clamp spring can be tightly attached to the surface of the sealing rubber ring.

Preferably, one end of the sealing and locking nut is spirally connected with the leading-in device body, and the cross section of the sealing and locking nut is T-shaped.

Preferably, a wire clamping assembly is spirally arranged in the rear adapter device and comprises a threaded pipe, a plurality of clamping plates and a rubber pad adhered to the inner side of the clamping plates, and the clamping plates can be welded to one side of the threaded pipe and form an included angle of 135-165 degrees with the threaded pipe.

Preferably, the threaded pipe and the clamping plates can be assembled in the rear pipe connecting device in a spiral mode, the inner sides of the rubber pads are provided with a plurality of convex points, and the rubber pads are distributed at equal intervals on the same plane all the time.

Compared with the prior art, the utility model provides a cable leading-in device, which has the following beneficial effects:

firstly, the device changes the traditional integrated form, adopts the split design of the sealing lock nut and the rear pipe connecting device, and enables the rear pipe connecting device to freely rotate in the sealing lock nut, thereby solving the problems that the flexible pipe is easy to distort and the toughness of the flexible pipe is damaged in the installation process;

secondly, a wire clamping assembly is designed in the rear pipe connecting device, and after the threaded pipe is fastened in the rear pipe connecting device, each clamping plate can be deformed, so that the rubber pad is tightly attached to the cable jacket, the positioning and clamping treatment of the cable jacket is realized, and the cable is prevented from being separated from the device to a certain extent;

thirdly, a clamp spring is designed in the pipe connecting assembly, the clamp spring is used for positioning the rear pipe connecting device, and after the pipe connecting assembly is assembled, the clamp spring can be ensured to form a closed-loop structure, a convex ring on the rear pipe connecting device can be blocked, and the situation that the sealing lock nut is separated from the rear pipe connecting device is avoided.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention in an exploded state;

FIG. 2 is a schematic view of the internal structure of the rear nozzle device of the present invention;

fig. 3 is a schematic structural view of the wire clamping assembly of the present invention.

Reference numerals: 1. introducing a device body; 2. sealing the rubber ring; 3. a clamp spring; 4. sealing the lock nut; 5. a rear pipe connecting device; 6. a wire clamping assembly; 61. a threaded pipe; 62. a splint; 63. and (7) a rubber pad.

Detailed Description

An embodiment of a cable entry device according to the present invention is further described with reference to fig. 1. A 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 a cable lead-in device, as shown in fig. 1 to 3, the cable lead-in device including:

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 connecting pipe assembly is used for inserting a flexible cable protection pipe and comprises a clamp spring 3, a sealing lock nut 4 and a rear connecting pipe device 5 which are sequentially combined, and one end of the rear connecting pipe device 5 is inserted into the sealing lock nut 4 and can freely rotate;

the above-mentioned components of the connecting tube assembly are combined together to form a new device, and

and a sealing rubber ring 2 fitted to a position between the introducing apparatus body 1 and the junction block assembly.

By adopting the technical scheme:

the device has changed traditional integrated form, will seal lock nut 4 and back takeover device 5 and adopt split type design to make back takeover device 5 free rotation in seal lock nut 4, solved and caused the flexible pipe distortion easily at the installation, destroy the problem of flexible pipe toughness.

As shown in fig. 1, the inner and outer surfaces of the introduction device body 1 are both provided with thread grooves, and a stop ring is welded in the middle of the introduction device body 1.

As shown in fig. 1, a convex ring is arranged on the outer surface of one end of the rear pipe connecting device 5, the clamp spring 3 can be sleeved on one side of the convex ring of the rear pipe connecting device 5, and one side of the clamp spring 3 can be tightly attached to the surface of the sealing rubber ring 2.

The both ends of jump ring 3 of this department can suit the one end of back takeover device 5 after the separation, and the both ends of jump ring 3 are closed after the pine takes off to receive the protruding ring group on the back takeover device 5 and keep off, jump ring 3 this moment can with sealed lock nut 4 one side laminating, ensure that sealed lock nut 4 and back takeover device can not take place the separation phenomenon.

By adopting the technical scheme:

the clamp spring 3 is designed in the connecting pipe assembly, the clamp spring 3 is used for positioning the rear connecting pipe device, after the assembly, the clamp spring 3 can be ensured to form a closed-loop structure, a convex ring on the rear connecting pipe device 5 can be blocked, and the situation that the sealing lock nut 4 is separated from the rear connecting pipe device 5 is avoided.

As shown in fig. 1, one end of the seal lock nut 4 is screw-coupled to the lead-in device body 1, and the seal lock nut 4 has a "T" shape in cross section.

As shown in fig. 1-3, a wire clamping assembly 6 is spirally disposed in the rear adapter 5, and the wire clamping assembly 6 comprises a threaded pipe 61, a plurality of clamping plates 62 and a rubber pad 63 adhered to the inner side of the clamping plates 62, wherein the plurality of clamping plates 62 can be welded to one side of the threaded pipe 61 and form an included angle of 135 and 165 ° with the threaded pipe 61.

When the cable sheath clamping device is used specifically, one end of the threaded pipe 61 is assembled into the rear adapter pipe device 5 in a spiral mode, and in the assembling process, the clamping plates 62 are close to each other to clamp the cable sheath;

the length of the threaded pipe 61 fitted in the rear pipe-connecting device 5 can be adjusted according to the specification of the cable jacket.

As shown in fig. 2 and 3, the threaded pipe 61 and the plurality of clamping plates 62 can be spirally assembled in the rear adapter device 5, and a plurality of salient points are arranged on the inner side of the rubber pad 63, and the design of the salient points is to ensure that a large static friction force exists between the rubber pad 63 and the cable jacket; on the same plane, all the rubber pads 63 are distributed at equal intervals all the time.

By adopting the technical scheme:

the wire clamping assembly 6 is designed in the rear pipe connecting device 5, and after the threaded pipe 61 is fastened in the rear pipe connecting device 5, each clamping plate 62 can be deformed, so that the rubber pad 63 is tightly attached to the cable jacket, the positioning and clamping processing of the cable jacket is realized, and the situation that the cable is separated from the device is avoided to a certain extent.

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. A 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 connecting pipe assembly is used for inserting a flexible cable protection pipe and comprises a clamp spring (3), a sealing locking nut (4) and a rear connecting pipe device (5) which are sequentially combined, and one end of the rear connecting pipe device (5) is inserted into the sealing locking nut (4) and can freely rotate; and

a sealing rubber ring (2) fitted to a position between the introducing device body (1) and the junction assembly.

2. A cable entry device according to claim 1, wherein: the inner surface and the outer surface of the leading-in device main body (1) are both provided with thread grooves, and the middle part of the leading-in device main body (1) is welded with a stop ring.

3. A cable entry device according to claim 1, wherein: the outer surface of one end of the rear pipe connecting device (5) is provided with a convex ring, the clamp spring (3) can be sleeved on one side of the convex ring of the rear pipe connecting device (5), and one side of the clamp spring (3) can be tightly attached to the surface of the sealing rubber ring (2).

4. A cable entry device according to claim 1, wherein: one end of the sealing and locking nut (4) is spirally connected with the leading-in device body (1), and the section of the sealing and locking nut (4) is T-shaped.

5. A cable entry device according to claim 1, wherein: the rear adapter device (5) is internally and spirally provided with a wire clamping assembly (6), the wire clamping assembly (6) comprises a threaded pipe (61), a plurality of clamping plates (62) and rubber pads (63) adhered to the inner sides of the clamping plates (62), and the clamping plates (62) can be welded to one side of the threaded pipe (61) and form an included angle of 135 degrees and 165 degrees with the threaded pipe (61).

6. A cable entry device according to claim 5, wherein: the threaded pipe (61) and the clamping plates (62) can be assembled in the rear pipe connecting device (5) in a spiral mode, the inner sides of the rubber pads (63) are provided with a plurality of salient points, and the rubber pads (63) are distributed at equal intervals on the same plane all the time.