CN111668777B

CN111668777B - Cable conduit

Info

Publication number: CN111668777B
Application number: CN202010626293.XA
Authority: CN
Inventors: 郭潇骏; 李云云
Original assignee: Guangdong Power Grid Co Ltd; Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2022-04-05
Anticipated expiration: 2040-07-01
Also published as: CN111668777A

Abstract

The invention discloses a cable guide pipe which comprises a first end and a second end, wherein the first end of one cable guide pipe can be inserted into the second end of the other cable guide pipe, a plurality of first balls are embedded into the first end, the first balls and the end surface of the first end are arranged at intervals, and the first balls protrude out of the inner wall of the first end. The cable guide pipe provided by the invention supports and limits the cable at the joint of the cable guide pipe by using the ball arranged at the first end, when the cable is dragged to move in the cable guide pipe, the friction force can be reduced, the outer skin of the cable is prevented from being abraded at the uneven joint, and the cable is effectively protected while the construction is convenient.

Description

Cable conduit

Technical Field

The invention relates to the technical field of power construction, in particular to a cable guide pipe.

Background

The cable laying refers to a process of laying and installing cables along the checked route to form a cable line. According to the use occasion, the method can be divided into a plurality of laying modes such as overhead, underground, underwater, wall, tunnel and the like. When the mode of laying underground is adopted, the cable needs to pass through the guide pipe, the guide pipe is utilized to play a role in protecting the cable, in order to facilitate construction, the length of the guide pipe is limited, a plurality of sections of guide pipes need to be connected during construction, the calibers at two ends of the guide pipe are arranged differently, and the guide pipes are connected in an inserting mode. The cable may rub against the inner wall of the conduit during its passage through the conduit, and its outer skin may easily wear at the conduit junction during pulling due to the unevenness of the junction between the conduits. In addition, simple plug-in connection is unreliable, and easy pine takes off, can weaken the guard action of pipe to the cable, has also increased the construction degree of difficulty.

Disclosure of Invention

The invention aims to provide a cable guide pipe, which is provided with a ball at the end part, can effectively protect a cable and is convenient to construct.

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

the cable guide pipe comprises a first end and a second end, the first end of one cable guide pipe can be inserted into the second end of the other cable guide pipe, a plurality of first balls are embedded into the first end, the first balls and the end face of the first end are arranged at intervals, and the first balls protrude out of the inner wall of the first end.

As a preferable mode of the present invention, the first ball does not protrude from an outer wall of the first end, and the first end and the second end are in interference fit.

As a preferable scheme of the present invention, the first ball protrudes from an outer wall of the first end, the first end is in clearance fit with the second end, the inner wall of the second end is provided with a plurality of positioning recesses, and the first ball can be clamped into the positioning recesses.

As a preferable mode of the present invention, at least three first balls distributed on the same circumference form a ball group, and at least one ball group is disposed on the first end.

As a preferable scheme of the present invention, the plurality of balls in the same ball group are arranged at equal intervals.

As a preferable mode of the present invention, at least two ball sets are provided on the first end, and a distance between the two ball sets is not larger than a diameter of the first ball.

As a preferable mode of the present invention, a height of the first ball protruding from the inner wall of the first end near the end surface of the first end is larger than a distance between the first ball and the end surface of the first end.

As a preferable aspect of the present invention, a plurality of second balls are embedded in the second end, and the second balls protrude from an inner wall of the second end and do not protrude from an outer wall of the second end.

As a preferable aspect of the present invention, the second end is provided with a stepped hole structure, the second end has an outer end surface and an inner end surface, an end surface of the first end can abut against the inner end surface, and a distance of inserting the first end into the second end is equal to a distance between the outer end surface and the inner end surface.

As a preferable mode of the present invention, a height of the first ball protruding from the inner wall of the first end is smaller than a radius of the first ball.

The invention has the beneficial effects that:

the cable guide pipe provided by the invention supports and limits the cable at the joint of the cable guide pipe by using the ball arranged at the first end, when the cable is dragged to move in the cable guide pipe, the friction force can be reduced, the outer skin of the cable is prevented from being abraded at the uneven joint, and the cable is effectively protected while the construction is convenient.

Drawings

FIG. 1 is a perspective view of a first end of a cable guide according to one embodiment of the present invention;

FIG. 2 is a cross-sectional view of a cable duct junction according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a cable duct junction according to another embodiment of the present invention;

FIG. 4 is a cross-sectional view of a cable duct junction according to yet another embodiment of the present invention;

fig. 5 is a schematic view of the cable guide of fig. 4 with the first and second ends separated.

In the figure:

1. a first end; 2. a second end; 20. positioning the pits; 21. an outer end face; 22. an inner end surface; 3. a first ball bearing; 4. a second ball.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the word "over" a first feature or feature in a second feature may include the word "over" or "over" the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under" a second feature may include a first feature that is directly under and obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

As shown in fig. 1 and fig. 2, the cable guide of the present embodiment includes a first end 1 and a second end 2, the first end 1 of one cable guide can be inserted into the second end 2 of another cable guide, a plurality of first balls 3 are embedded in the first end 1, the first balls 3 are spaced from the end surface of the first end 1, and the first balls 3 protrude from the inner wall of the first end 1.

The cable guide of this embodiment utilizes the first ball 3 that sets up on first end 1 to support and spacing at the junction of cable guide, because first ball 3 can roll, when dragging the cable and remove in the cable guide, can reduce frictional force and prevent that the crust of cable from being worn and torn at the junction of unevenness, has played effectual guard action to the cable when conveniently carrying out the construction.

As shown in fig. 2, preferably, the first ball 3 does not protrude out of the outer wall of the first end 1, and the first end 1 and the second end 2 are in interference fit, so that after the first end 1 is inserted into the second end 2, the two cable ducts can be firmly connected by means of strong friction force, and are not easy to loosen after connection, thereby ensuring the construction efficiency.

As shown in fig. 4 and 5, the first ball 3 protrudes from the outer wall of the first end 1, the first end 1 is in clearance fit with the second end 2, the inner wall of the second end 2 is provided with a plurality of positioning recesses 20, and the first ball 3 can be clamped into the positioning recesses 20. When inserting first end 1 in second end 2, first ball 3 makes second end 2 take place certain elastic deformation through extrusion second end 2, after first ball 3 extrudes into location pit 20, second end 2 resumes initial shape and includes first end 1 and a plurality of first ball 3 parcel, first ball 3 is fixed this moment, can prevent first end 1 and second end 2 separation, thereby realize the reliable connection of first end 1 and second end 2, and first ball 3 this moment still can normally roll in order to exert its function.

Preferably, at least three first balls 3 distributed on the same circumference form a ball group, and at least one ball group is arranged on the first end 1. In order to better protect the cable and reduce the friction force, the cable needs to be prevented from contacting the inner wall of the first end 1 at the joint of the two cable ducts, and therefore the cable needs to be limited by at least three first balls 3, for example, the three first balls 3 are distributed on the same circumference and are arranged at equal intervals, that is, the connecting lines among the three first balls 3 form an equilateral triangle, so that the cable can be well limited and supported. Of course, the connecting lines among the three first rolling balls 3 form an isosceles triangle, and the above purpose can be achieved.

Further, at least two ball groups are arranged on the first end 1, and the distance between the two ball groups is not larger than the diameter of the first ball 3. Through setting up a plurality of ball group, can play better support and location effect to the cable, further reduce frictional force, strengthen the protection to the cable. The distance between two ball groups is not more than the diameter of first ball 3, can carry out better support to the cable, prevents that the crust of cable and the inner wall of first end 1 from contacting.

Furthermore, the height of the first ball 3 protruding from the inner wall of the first end 1, which is close to the end surface of the first end 1, is greater than the distance between the first ball 3 and the end surface of the first end 1. If the height of the first ball 3 protruding from the inner wall of the first end 1 is smaller than the distance between the first ball 3 and the end face of the first end 1, the distance between the outer skin of the cable and the inner walls of the first end 1 and the second end 2 may be too small, and when the first end 1 and the second end 2 are in a staggered state, the outer skin of the cable may scratch the edge of the end face of the first end 1 to damage the outer skin of the cable when the cable is dragged.

As shown in fig. 3, preferably, a plurality of second balls 4 are embedded in the second end 2, and the second balls 4 protrude from the inner wall of the second end 2 and do not protrude from the outer wall of the second end 2. Through set up a plurality of second balls 4 on second end 2, can avoid the crust of cable to take place the scraping in the junction of two cable ducts better, also can further reduce the frictional force of cable when dragging in the cable duct in order to reduce the construction degree of difficulty, improve the efficiency of construction.

As shown in fig. 5, preferably, the second end 2 is provided with a stepped hole structure, the second end 2 has an outer end surface 21 and an inner end surface 22, the end surface of the first end 1 can abut against the inner end surface 22, and the distance of inserting the first end 1 into the second end 2 is equal to the distance between the outer end surface 21 and the inner end surface 22. The first end 1 can be limited by arranging the step hole structure at the second end 2, and when the end surface of the first end 1 is abutted to the inner end surface 22, the first end 1 cannot be inserted continuously, namely, two cable ducts are connected in place.

Preferably, the height of the first ball 3 protruding from the inner wall of the first end 1 is smaller than the radius of the first ball 3, so that the first end 1 can fix the first ball 3 and the first ball 3 cannot be pulled out from the first end 1.

Reference throughout this specification to the description of the terms "preferred," "further," or the like, as used in describing preferred embodiments of the present invention, means that a particular feature, structure, material, or characteristic described in connection with the example or illustration is included in at least one example or illustration of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above examples are only intended to illustrate the details of the invention, which is not limited to the above details, i.e. it is not intended that the invention must be implemented in such detail. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.

Claims

1. The utility model provides a cable guide, its characterized in that, includes first end and second end, and the first end of a cable guide can insert the second end of another cable guide, the embedding has a plurality of first balls on the first end, first ball with the terminal surface interval of first end sets up, first ball protrusion in the inner wall of first end, first ball protrusion in the outer wall of first end, first end with second end clearance fit, be provided with a plurality of location pits on the inner wall of second end, first ball can be blocked in the location pit.

2. The cable duct of claim 1, wherein at least three of said first balls distributed on a common circumference form a ball group, at least one of said ball groups being disposed on said first end.

3. The cable guide of claim 2, wherein the plurality of balls in the same ball group are equally spaced.

4. The cable guide of claim 2, wherein the first end has at least two of the ball sets disposed thereon, the spacing between the two ball sets being no greater than the diameter of the first ball.

5. The cable guide of claim 4, wherein the first ball bearing adjacent the end face of the first end protrudes from the inner wall of the first end to a greater height than the first ball bearing is spaced from the end face of the first end.

6. The cable guide of claim 1, wherein the second end has a plurality of second balls embedded therein, the second balls protruding from an inner wall of the second end and not protruding from an outer wall of the second end.

7. The conduit according to claim 1 wherein the second end is provided with a stepped bore configuration, the second end having an outer end face and an inner end face, the end face of the first end being abuttable to the inner end face, the first end being inserted into the second end a distance equal to the spacing between the outer end face and the inner end face.

8. The cable guide of claim 1, wherein the height of the inner wall of the first ball bearing projecting from the first end is less than the radius of the first ball bearing.