CN215419497U - Rotary connection box of power bus duct - Google Patents

Abstract

A swivelling joint box of a power busway, comprising: the electrode comprises two first electrodes (1), two second electrodes (2), a supporting plate (3), a shell (4) and two end covers (5), wherein one first electrode (1) and one second electrode (2) protrude from one side face of the supporting plate (3) and form a gap (10) on one side of the supporting plate (3), the other first electrode (1) and the other second electrode (2) protrude from the other side face of the supporting plate (3) and also form a gap (10) on the other side face of the supporting plate (3), the shell (4) and the end covers (5) are cylindrical, and external threads (41) at two ends of the shell (4) are respectively meshed with internal threads (51) of the two end covers (5). Above-mentioned swivelling joint box not only possesses good waterproof performance, can realize stable electricity moreover and connect to guarantee power supply bus system's normal operating.

Description

Rotary connection box of power bus duct

Technical Field

The utility model relates to a connecting box, in particular to a rotary connecting box of a power bus duct.

Background

With the emergence of modern engineering facilities and equipment, the power consumption of various industries is increased rapidly, particularly, the appearance of numerous high-rise buildings and large-scale factory workshops, the traditional cable serving as a power transmission lead cannot meet the requirement in a large-current transmission system, and the parallel connection of multiple cables brings inconvenience to on-site installation, construction and connection. The plug-in type bus duct is produced as a novel distribution wire, compared with the traditional cable, the plug-in type bus duct fully shows the superiority of the plug-in type bus duct when large current is transmitted, simultaneously, because of adopting a new technology and a new process, the contact resistance and the temperature rise of the joint of two end parts of the bus duct and the plug-in part of a branching port are greatly reduced, and high-quality insulating materials are used in the bus duct, thereby improving the safety and reliability of the bus duct and improving the whole system.

In order to realize different power supply angles, in the actual use process, the rotary connection box can be adopted to realize the connection of the two power bus ducts, the wire cores of the two power bus ducts face different directions, and the two form a rotation angle. At present, most schemes are that the shell of the power bus duct and the shell of the connecting box are fixed through screws.

However, the above method requires screw holes on the housing, which results in poor sealing performance and low waterproof performance. In addition, the thermal expansion coefficient of metal is large, and when the continuous service life is long, the cable core in the power bus duct can be precooled and contracted, so that the cable core of the power bus duct can be separated from the electrode, and the connection stability can be affected.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, an aspect of the present invention provides a rotary connection box for a power bus duct, including: the electrode assembly comprises two first electrodes, two second electrodes, a supporting plate, a shell and two end covers, wherein the first electrodes, the second electrodes and the supporting plate are all formed by conducting materials, the shell and the two end covers are all formed by insulating materials, the first electrodes, the second electrodes and the supporting plate are all located in the shell, one first electrode and one second electrode protrude from one side face of the supporting plate, a gap is formed in one side of the supporting plate, the other first electrode and the other second electrode protrude from the other side face of the supporting plate, a gap is also formed in the other side face of the supporting plate, the opening directions S of the two gaps are different, the shell and the end covers are cylindrical, external threads are arranged at two ends of the shell, the end covers are provided with internal threads, and the external threads at two ends of the shell are respectively meshed with the internal threads of the two end covers.

Further, the angle between the opening directions S of the two slits is 90 °.

Further, both the first electrodes are provided with first threaded holes, and both the second electrodes are provided with at least two second threaded holes; the rotary connection box further comprises: and at least two screws, one screw being simultaneously engaged with the first threaded hole of one first electrode and the second threaded hole of one second electrode, and the other screw being simultaneously engaged with the first threaded hole of the other first electrode and the second threaded hole of the other second electrode.

Further, the width of the outer surface of the first electrode is larger than that of the inner surface, and the width of the outer surface of the second electrode is larger than that of the inner surface.

Further, the length of the first electrode is equal to that of the second electrode, and the inner surface of the first electrode is parallel to that of the second electrode.

Further, the outer diameters of the two ends of the shell are smaller than the outer diameter of the middle of the shell, and the outer diameter of the end cover is smaller than the outer diameter of the middle of the shell.

Further, the case has a plurality of reinforcing ribs protruding from an inner surface of the case, and the reinforcing ribs are in a circular ring shape.

After the technical scheme is adopted, the utility model has the effects that: the rotary connection box with the structure has good waterproof performance, and can realize stable electric connection, thereby ensuring the normal operation of a power supply bus system.

Drawings

FIG. 1 is a schematic view of a junction box according to the present invention;

FIG. 2 is an internal view of a junction box according to the present invention;

FIG. 3 is a cross-sectional view of a junction box according to the present invention;

FIG. 4 is a schematic view of a connection box according to the present invention in use;

fig. 5 is a sectional view showing a state of use of the connection box according to the present invention.

Detailed Description

It is specifically noted that the terms "first", "second" and "third" in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. All directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative positional relationship between the components, the movement, and the like in a certain posture, and if the certain posture is changed, the directional indicator is changed accordingly.

The technical solution of the present invention is further described by the following examples:

the utility model provides a rotary connection box of a power bus duct, which is shown in a combined figure 1-3 and comprises: two first electrodes 1, two second electrodes 2, a support plate 3, the electrode assembly comprises a shell 4 and two end covers 5, wherein the first electrode 1, the second electrode 2 and a support plate 3 are all formed by conducting materials, the shell 4 and the two end covers 5 are all formed by insulating materials, the first electrode 1, the second electrode 2 and the support plate 3 are all positioned in the shell 4, one first electrode 1 and one second electrode 2 protrude from one side face of the support plate 3 and form a gap 10 on one side of the support plate 3, the other first electrode 1 and the other second electrode 2 protrude from the other side face of the support plate 3 and also form a gap 10 on the other side face of the support plate 3, the opening directions S of the two gaps 10 are different (namely the orientations of the two gaps 10 are different), the shell 4 and the end covers 5 are both cylindrical, the two ends of the shell 4 are provided with external threads 41, the end covers 5 are provided with internal threads 51, and the external threads 41 on the two ends of the shell 4 are respectively meshed with the internal threads 51 of the two end covers 5.

As shown in fig. 4 and 5, when the rotary connection box is used, the two power bus ducts 100 are inserted into the rotary connection box from both ends, and the directions of the cores 101 of the two power bus ducts 100 are different. The connecting plate of the wire core 101 of the power bus duct 100 is inserted into the gap 10, the first electrode 1 is in contact with one surface of the connecting plate of the wire core 101, the second electrode 2 is in contact with the other surface of the connecting plate of the wire core 101, the shell 102 of the power bus duct 100 is inserted into the shell 4, and the shell 102 of the power bus duct 100 is in interference fit with the end cover 5, so that the shell 102 of the power bus duct 100 is fixed with the end cover 5.

The shell 4 of the rotary connection box and the shell 102 of the power bus duct 100 are fixed through the end cover 5, namely, fixed in a threaded manner, so that a screw hole is not needed, the waterproof performance can be greatly improved, and the sealing performance is good. In addition, since the first electrode 1 and the second electrode 2 are respectively in contact with the wire core 101 of the power bus duct 100 in two opposite directions, better connection stability can be ensured.

Therefore, the rotary connection box with the structure has good waterproof performance and can realize stable electric connection, so that the normal operation of a power supply bus system is ensured.

Specifically, with reference to fig. 2, in the present embodiment, an angle between the opening directions S of the two slits 10 is 90 °. That is, the two slots 10 are perpendicular to each other, and in the figure, the opening direction S of one slot 10 is the vertical direction, and the opening direction S of the other slot 10 is the front-rear direction, and the rotary connection box is suitable for a bus bar system having a 90 ° rotation angle for supplying power.

In particular, with continued reference to fig. 3 and 5, both first electrodes 1 have first threaded holes 11, and both second electrodes 2 have at least two second threaded holes 21; the rotary connection box further comprises: at least two screws 6, one screw 6 simultaneously engages with the first threaded hole 11 of one first electrode 1 and the second threaded hole 21 of one second electrode 2, and the other screw 6 simultaneously engages with the first threaded hole 11 of the other first electrode 1 and the second threaded hole 21 of the other second electrode 2. Correspondingly, the wire core 101 of the power bus duct 100 is provided with a screw hole, and the wire core 101 can be locked between the first electrode 1 and the second electrode 2 through the screw 6, so that the connection is more stable, and even if the wire core 101 is precooled and shrunk, the wire core 101 cannot be separated from the first electrode 1 and the second electrode 2 at the same time.

More specifically, with continued reference to fig. 1, the width of the outer surface (i.e., the surface facing away from the second electrode 2) of the first electrode 1 is greater than the width of the inner surface (i.e., the surface facing toward the second electrode 2), and the width of the outer surface (i.e., the surface facing away from the first electrode 1) of the second electrode 2 is greater than the width of the inner surface (i.e., the surface facing toward the first electrode 1). That is, the vertical cross section of the first electrode 1 and the vertical cross section of the second electrode 2 are two symmetrical trapezoids, accordingly, the wire core 101 of the power bus duct 100 is provided with a groove with an upper section and a lower section being trapezoids, and the above structure can guide the installation of the first electrode 1 and the second electrode 2.

More specifically, the length of the first electrode 1 is equal to the length of the second electrode 2, and the inner surface of the first electrode 1 and the inner surface of the second electrode 2 are parallel to each other. The first electrode 1 and the second electrode 2 are symmetrical relative to the horizontal plane, so that the stability of up-and-down electrical connection can be ensured.

Specifically, with continued reference to fig. 3, the outer diameters of the two ends of the housing 4 are smaller than the outer diameter of the middle portion, and the outer diameters of the end caps 5 are smaller than the outer diameter of the middle portion of the housing 4. Reduce the external diameter at 4 both ends of casing and the external diameter of end cover 5, be favorable to satisfying the miniaturization of swivelling joint box, avoid 5 installation backs of end cover to cause the interference to other parts of power supply bus-bar system simultaneously.

Specifically, the case 4 has a plurality of reinforcing ribs 32, the reinforcing ribs 32 project from the inner surface of the case 4, and the reinforcing ribs 32 are annular in shape. The reinforcing ribs 32 can enhance the compressive strength of the housing 4, and prevent the housing from deforming to cause the first electrode 1 and the second electrode 2 to be displaced.

The above-described embodiments are merely preferred examples of the present invention, and not intended to limit the scope of the utility model, so that equivalent changes or modifications in the structure, features and principles of the utility model described in the claims should be included in the claims.

Claims (7)

1. The utility model provides a power bus duct's swivelling joint box which characterized in that: the rotary connection box includes: two first electrodes (1), two second electrodes (2), a support plate (3), a case (4) and two end caps (5), the first electrodes (1), the second electrodes (2) and the support plate (3) are all formed of a conductive material, the case (4) and the two end caps (5) are all formed of an insulating material, the first electrodes (1), the second electrodes (2) and the support plate (3) are all located inside the case (4), one first electrode (1) and one second electrode (2) protrude from one side surface of the support plate (3) and form a slit (10) at one side of the support plate (3), the other first electrode (1) and the other second electrode (2) protrude from the other side surface of the support plate (3) and also form a slit (10) at the other side surface of the support plate (3), opening directions S of the two slits (10) are different, the shell (4) and the end covers (5) are cylindrical, external threads (41) are arranged at two ends of the shell (4), internal threads (51) are arranged on the end covers (5), and the external threads (41) at two ends of the shell (4) are respectively meshed with the internal threads (51) of the two end covers (5).

2. The rotary connection box of a power bus duct of claim 1, characterized in that: the angle between the opening directions S of the two slits (10) is 90 degrees.

3. The rotary connection box of a power bus duct of claim 1, characterized in that: both first electrodes (1) have first threaded holes (11), and both second electrodes (2) have at least two second threaded holes (21); the rotary connection box further comprises: at least two screws (6), one screw (6) is simultaneously engaged with the first threaded hole (11) of one first electrode (1) and the second threaded hole (21) of one second electrode (2), and the other screw (6) is simultaneously engaged with the first threaded hole (11) of the other first electrode (1) and the second threaded hole (21) of the other second electrode (2).

4. A rotary connection box of a power bus duct according to claim 3, wherein: the width of the outer surface of the first electrode (1) is larger than that of the inner surface, and the width of the outer surface of the second electrode (2) is larger than that of the inner surface.

5. The rotary connection box of power bus duct of claim 4, characterized in that: the length of the first electrode (1) is equal to that of the second electrode (2), and the inner surface of the first electrode (1) is parallel to that of the second electrode (2).

6. The rotary connection box of a power bus duct of claim 1, characterized in that: the outer diameters of the two ends of the shell (4) are smaller than the outer diameter of the middle of the shell, and the outer diameter of the end cover (5) is smaller than the outer diameter of the middle of the shell (4).

7. The rotary connection box of a power bus duct of claim 1, characterized in that: the case (4) has a plurality of reinforcing ribs (32), the reinforcing ribs (32) protrude from the inner surface of the case (4), and the reinforcing ribs (32) have a circular ring shape.

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