CN219535541U

CN219535541U - Connecting piece of KJG pipe and junction box

Info

Publication number: CN219535541U
Application number: CN202320261875.1U
Authority: CN
Inventors: 卢浩; 杨一州; 王皓; 李飞; 马强
Original assignee: China Railway Construction Group Co Ltd; North Engineering Co Ltd of China Railway Construction Engineering Group Co Ltd
Current assignee: China Railway Construction Group Co Ltd; North Engineering Co Ltd of China Railway Construction Engineering Group Co Ltd
Priority date: 2023-02-20
Filing date: 2023-02-20
Publication date: 2023-08-15
Anticipated expiration: 2033-02-20

Abstract

The utility model provides a connecting piece of a KJG pipe and a junction box, which relates to the field of building construction and sequentially comprises a fastening nut, an external thread hollow sleeve and an internal thread hollow sleeve from top to bottom, wherein the external side of the external thread hollow sleeve is provided with an external thread part, the fastening nut is in threaded fit with the external thread part, the internal thread hollow sleeve is internally provided with an internal thread part matched with the outer wall of the KJG pipe, the lower end of the external thread hollow sleeve is rotatably clamped and connected with the upper end of the internal thread hollow sleeve, after the connecting piece is arranged on the junction box, the external thread hollow sleeve and the internal thread hollow sleeve can rotate relatively, but the axial directions are mutually locked, a worker can assemble the KJG pipe by rotating the internal thread hollow sleeve, the problem that a plurality of junction boxes cannot be connected in series when the KJG pipe is in dark application is effectively solved, the installation time of the KJG pipe is greatly shortened, and the construction efficiency is further improved.

Description

Connecting piece of KJG pipe and junction box

Technical Field

The utility model relates to the field of building construction, in particular to a connecting piece of a KJG pipe and a junction box.

Background

During assembly building construction, common rigid materials such as JDG (joint-wall-mounted) pipes cannot be freely inserted and laid on a steel bar truss plate, so that flexible materials such as the KJG pipes are used as concealed materials, the KJG pipes are flexible metal hoses for building electrical use, connection modes in an atlas standard cannot meet concealed requirements when the materials are concealed, therefore, the KJG pipes and the junction boxes are required to be connected in a sealing mode by using connecting pieces, but during the concealed construction of the KJG pipes, the junction boxes are required to be fixed on truss plates in advance, at the moment, the opening sides of the junction boxes are tightly attached to pouring templates, so that when the opening sides of the junction boxes are in a sealing state, the KJG pipes are required to be rotated to be connected to the junction boxes, the KJG pipes can be connected with the conventional connecting pieces, but when one sides of the KJG pipes are screwed on the junction boxes, the KJG pipes cannot be rotated, the KJG pipes can only be connected with one side of the junction boxes, and the phenomenon that a plurality of junction boxes cannot be connected in series is caused, and great trouble is caused to construction.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects in the prior art and providing a connecting piece of a KJG pipe and a junction box.

The utility model is realized by the following technical scheme:

the utility model provides a connecting piece of KJG pipe and terminal box, from top to bottom includes fastening nut, the hollow sleeve of external screw thread and the hollow sleeve of internal screw thread in proper order, and the hollow sleeve of external screw thread and the hollow sleeve of internal screw thread are cavity structures, and the hollow telescopic outside of external screw thread is equipped with external screw thread portion, fastening nut and external screw thread portion screw-thread fit, be equipped with the internal screw thread portion with KJG pipe outer wall looks adaptation in the hollow sleeve of internal screw thread, but the hollow telescopic lower extreme of external screw thread is connected with the rotatable joint in the hollow telescopic upper end of internal screw thread.

According to the utility model, the lower end of the external thread hollow sleeve is rotatably clamped and connected with the upper end of the internal thread hollow sleeve, after the connecting piece is installed on the junction box, the external thread hollow sleeve and the internal thread hollow sleeve can rotate relatively, but the axial directions are mutually locked, a worker can assemble the KJG pipe by rotating the internal thread hollow sleeve, the problem that a plurality of junction boxes cannot be connected in series when the KJG pipe is in hidden application is effectively solved, the installation time of the KJG pipe is greatly shortened, and the construction efficiency is further improved.

According to the above technical scheme, preferably, the lower end of the external thread hollow sleeve is provided with the protruding part, the upper end of the internal thread hollow sleeve is provided with the mounting opening, the protruding part is inserted into the internal thread hollow sleeve along the mounting opening, the length of the protruding part is larger than the diameter of the mounting opening, and the protruding part props against the top of the internal thread hollow sleeve from the inner side.

The protruding part can be rapidly inserted into the internal thread hollow sleeve along the mounting opening, and the protruding part can prop against the top of the internal thread hollow sleeve from the inner side because the length of the protruding part is larger than the diameter of the mounting opening, so that the axial locking of the external thread hollow sleeve and the internal thread hollow sleeve is realized, and meanwhile, the external thread hollow sleeve and the internal thread hollow sleeve can relatively rotate.

According to the above technical solution, preferably, the protruding portion has an inverted "T" shape.

According to the technical scheme, preferably, the top of the internal thread hollow sleeve is provided with an annular clamping groove matched with the protruding part of the inverted T-shaped structure.

The protruding part of the inverted T-shaped structure can be rotationally connected with the annular clamping groove at the top of the internal thread hollow sleeve, so that the axial locking of the external thread hollow sleeve and the internal thread hollow sleeve is effectively realized.

According to the technical scheme, preferably, the connecting piece further comprises a compression spring and a rubber gasket, the rubber gasket and the compression spring are sleeved on the external thread hollow sleeve, and the rubber gasket and the compression spring respectively prop against the inner side and the outer side of the junction box.

The compression spring and the rubber gasket can ensure that the connecting piece is fixedly connected to the junction box.

According to the above-described aspect, preferably, the fastening nut is a hexagonal nut.

The beneficial effects of the utility model are as follows: according to the utility model, the lower end of the external thread hollow sleeve is rotatably clamped and connected with the upper end of the internal thread hollow sleeve, after the connecting piece is installed on the junction box, the external thread hollow sleeve and the internal thread hollow sleeve can rotate relatively, but the axial directions are mutually locked, a worker can assemble the KJG pipe by rotating the internal thread hollow sleeve, the problem that a plurality of junction boxes cannot be connected in series when the KJG pipe is in hidden application is effectively solved, the installation time of the KJG pipe is greatly shortened, and the construction efficiency is further improved.

Drawings

FIG. 1 shows a schematic diagram of an explosive structure of the present utility model;

FIG. 2 shows a schematic elevational view of the present utility model;

FIG. 3 shows a schematic cross-sectional view of the structure of FIG. 2 in the direction A-A;

FIG. 4 is a schematic diagram showing the front view of the present utility model after installation;

FIG. 5 shows a schematic cross-sectional view of the structure in the direction B-B in FIG. 2;

reference numerals illustrate:

1. a fastening nut; 2. a compression spring; 3. a rubber gasket; 4. an externally threaded hollow sleeve; 5. an internally threaded hollow sleeve; 6. an external thread portion; 7. an internal thread portion; 8. KJG tube; 9. and a junction box.

Detailed Description

The present utility model will be described in further detail below with reference to the drawings and preferred embodiments, so that those skilled in the art can better understand the technical solutions of the present utility model. All other embodiments, based on the embodiments of the utility model, which would be apparent to one of ordinary skill in the art without making any inventive effort are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model.

Example 1

As shown in the drawing, this embodiment provides a connector of KJG pipe 8 and terminal box 9, it includes fastening nut 1 from top to bottom in proper order, external thread hollow sleeve 4 and internal thread hollow sleeve 5, and external thread hollow sleeve 4 and internal thread hollow sleeve 5 are cavity structures, wherein the outside of external thread hollow sleeve 4 is equipped with external screw thread portion 6, fastening nut 1 and external screw thread portion 6 screw-thread fit, be equipped with in the internal thread hollow sleeve 5 with the internal screw thread portion 7 of KJG pipe 8 outer wall looks adaptation, the lower extreme of external thread hollow sleeve 4 is connected with the rotatable joint of the upper end of internal thread hollow sleeve 5, wherein the lower extreme of external thread hollow sleeve 4 is equipped with the bellying, the upper end of internal thread hollow sleeve 5 is equipped with the installation mouth, the bellying inserts in the internal thread hollow sleeve 5 along the installation mouth, the length of bellying is greater than the diameter of installation mouth, the bellying is from the inboard inside of supporting internal thread hollow sleeve 5, the inside of bellying that just can be followed the inside of installation mouth, the bellying can be locked with the hollow sleeve 5 from the internal thread hollow sleeve 5 with the internal thread hollow sleeve 5 simultaneously, can realize with the hollow sleeve 5 and the hollow sleeve 5 is rotated with the hollow sleeve 5 relatively to the internal thread 5.

Further, the protruding portion is of an inverted T-shaped structure, an annular clamping groove matched with the protruding portion of the inverted T-shaped structure is formed in the top of the internal thread hollow sleeve 5, the protruding portion of the inverted T-shaped structure can be rotationally connected with the annular clamping groove in the top of the internal thread hollow sleeve 5, and axial locking of the external thread hollow sleeve 4 and the internal thread hollow sleeve 5 is effectively achieved.

According to the utility model, the lower end of the external thread hollow sleeve 4 is rotatably clamped and connected with the upper end of the internal thread hollow sleeve 5, after the connecting piece is installed on the junction box 9, the external thread hollow sleeve 4 and the internal thread hollow sleeve 5 can rotate relatively, but the axial directions are mutually locked, a worker can assemble the KJG pipe 8 by rotating the internal thread hollow sleeve 5, the problem that a plurality of junction boxes 9 cannot be connected in series when the KJG pipe 8 is in hidden application is effectively solved, the installation time of the KJG pipe 8 is greatly shortened, and the construction efficiency is further improved.

Example 2

As shown in the figure, this embodiment provides a connection piece of KJG pipe 8 and junction box 9, from top to bottom in turn including fastening nut 1, compression spring 2, rubber gasket 3, external thread hollow sleeve 4 and internal thread hollow sleeve 5, and external thread hollow sleeve 4 and internal thread hollow sleeve 5 are cavity structures, wherein the outside of external thread hollow sleeve 4 is equipped with external screw thread portion 6, fastening nut 1 and external screw thread portion 6 screw-thread fit, internal screw thread hollow sleeve 5 is equipped with internal screw thread portion 7 with KJG pipe 8 outer wall looks adaptation, rubber gasket 3 and compression spring 2 cover are established on external screw thread hollow sleeve 4, and rubber gasket 3 and compression spring 2 support the inside and outside both sides of junction box 9 respectively, and compression spring 2 and rubber gasket 3 can ensure that the connection piece fastening connects on junction box 9, the lower extreme of the hollow sleeve of external screw thread 4 is connected with the rotatable joint of the upper end of the hollow sleeve of internal screw thread 5, wherein the lower extreme of the hollow sleeve of external screw thread 4 is equipped with the bellying, the upper end of the hollow sleeve of internal screw thread 5 is equipped with the installing port, the bellying inserts in the hollow sleeve of internal screw thread 5 along the installing port, the length of bellying is greater than the diameter of installing port, the bellying supports the top of the hollow sleeve of internal screw thread 5 from the inboard, foretell bellying can insert in the hollow sleeve of internal screw thread 5 along the installing port fast, and because the length of bellying is greater than the diameter of installing port, the bellying can support the top of the hollow sleeve of internal screw thread 5 from the inboard, and then realize the axial locking of hollow sleeve of external screw thread 4 and hollow sleeve of internal screw 5, simultaneously the hollow sleeve of external screw thread 4 and hollow sleeve of internal screw 5 can rotate relatively.

Further, the fastening nut 1 is a hexagonal nut.

The specific embodiment is as follows:

s1, inserting a protruding part with an inverted T-shaped structure at the lower end of an external thread hollow sleeve into an internal thread hollow sleeve 5, wherein the protruding part can prop against the top of the internal thread hollow sleeve 5 from the inner side, so that the external thread hollow sleeve 4 and the internal thread hollow sleeve 5 are axially locked, and meanwhile, the external thread hollow sleeve 4 and the internal thread hollow sleeve 5 can rotate relatively;

s2, sleeving a rubber gasket on the external thread hollow sleeve 4 to form a combination body;

s3, inserting the assembly of the S2 into a knock-out hole of the junction box 9, and sleeving the compression spring 2 into the external thread hollow sleeve 4 from the inside of the junction box 9;

s4, screwing the hexagon nut in the junction box, compressing the compression spring 2, enabling the compression spring 2 to be in a compression state, and enabling the rubber gasket 3 to be tightly attached to the outer wall of the junction box 9;

s5, tightly buckling the junction box 9 assembled in the S4 on the steel bar truss plate and fixing the junction box 9 by spot welding, wherein the opening of the junction box 9 is closed;

s6, the port of the KJG pipe 8 is plugged into the connector after burrs are removed, the internal thread hollow sleeve 5 is rotated to enable the outer wall thread of the KJG pipe 8 to be tightly screwed with the internal thread hollow sleeve 5, and the sealed connection between the KJG pipe 8 and the junction box 9 is achieved.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. The utility model provides a connecting piece of KJG pipe and terminal box, its characterized in that includes fastening nut, external screw thread hollow sleeve and internal screw thread hollow sleeve from top to bottom in proper order, external screw thread hollow sleeve and internal screw thread hollow sleeve are cavity structure, external screw thread hollow sleeve's outside is equipped with external screw thread portion, fastening nut with external screw thread portion screw-thread fit, be equipped with the internal screw thread portion with KJG pipe outer wall looks adaptation in the internal screw thread hollow sleeve, external screw thread hollow sleeve's lower extreme with the rotatable joint of internal screw thread hollow sleeve's upper end is connected.

2. The KJG pipe and junction box connector according to claim 1, wherein the lower end of the externally threaded hollow sleeve is provided with a boss, the upper end of the internally threaded hollow sleeve is provided with a mounting opening, the boss is inserted into the internally threaded hollow sleeve along the mounting opening, the length of the boss is greater than the diameter of the mounting opening, and the boss abuts against the top of the internally threaded hollow sleeve from the inside.

3. The KJG tube and junction box connection according to claim 2, wherein the boss is of inverted "T" configuration.

4. A KJG pipe and junction box connector according to claim 3, wherein the top of the internally threaded hollow sleeve is provided with an annular clamping groove which is adapted to the protruding part of the inverted "T" structure.

5. The KJG pipe and junction box connection according to any of claims 1-4, further comprising a compression spring and a rubber washer, wherein the rubber washer and the compression spring are sleeved on the externally threaded hollow sleeve, and the rubber washer and the compression spring respectively abut against the inner side and the outer side of the junction box.

6. The KJG pipe and junction box connection according to claim 5, wherein the fastening nut is a hex nut.