Junction box for high-voltage motor

Abstract

The utility model discloses a junction box for a high-voltage motor, which is characterized by comprising a box body, an insulator, a copper bar, a cable terminal and a motor lead, the insulator is fixed in the box body, the copper bar is fixed on the insulator through a conducting rod, and two ends of the copper bar are respectively connected with the cable terminal and the motor lead. The problems of non-solid crimping of the lead and strand breakage during crimping are solved; the lead can be visually checked after transformation; the problem that a power cable and a lead are mounted on the same bolt is solved; after the method is rectified, the hidden fault of the lead can be effectively found.

Description

Technical Field

[0001] The utility model relates to a junction box, in particular to a junction box for a high-voltage motor. Background Art

[0002] At present, the lead wires of a certain type of high-voltage motor have frequent overheating problems. The original lead wire design is that the lead wire is crimped inside the conductive rod, and there is a problem that the crimping force between multiple strands of soft copper wire and the round hole wire nose is insufficient. Since the wire core has been damaged when the lead wire is crimped, and there is the influence of the later electric force, too many strands of wire core are broken, and the rated current carrying capacity cannot be reached. Secondly, the fixing force of the conductive rod depends entirely on the nut that tightens the power cable. If the nut is loose, it will directly affect the overheating of the conductive rod. Because the lead wire is crimped behind the conductive rod, the operation of the lead wire cannot be intuitively seen during normal inspections. Utility Model Content

[0003] The utility model aims to provide a junction box for a high-voltage motor, so as to solve the shortcomings in the prior art that the conductive rod is easy to overheat and the running condition of the lead wire cannot be directly seen.

[0004] The utility model is realized by adopting the following technical scheme: a junction box for a high-voltage motor, characterized in that it comprises a box body, an insulator, a copper bar, a cable terminal, and a motor lead, wherein the insulator is fixed in the box body, the copper bar is fixed on the insulator through a conductive rod, and the two ends of the copper bar are respectively connected to the cable terminal and the motor lead.

[0005] Furthermore, there are three insulators, which are respectively arranged at the top and on the left and right sides of the box body.

[0006] Furthermore, holes are opened on the back and bottom of the box body, the motor leads are introduced into the box body through the openings on the back of the box body, and the cable terminals are introduced into the box body through the openings on the bottom of the box body.

[0007] Furthermore, a hole is opened in the middle of the copper bar, and the conductive rod passes through the hole in the middle of the copper bar and is connected to the insulator.

[0008] Furthermore, the distance between the two ends of the copper busbar and the front and rear panels of the box body is not less than 200 mm.

[0009] Furthermore, the cross-sectional size of the copper busbar is 40mm*4mm.

[0010] Furthermore, the copper bar fixed on the upper insulator is a U-shaped copper bar.

[0011] The utility model discloses a junction box for a high-voltage motor, and its beneficial effects include: solving the problems of incomplete crimping of leads and broken strands during crimping; enabling visual inspection of the leads after modification; solving the problem of the power cable and the leads being installed on the same bolt; and after rectification, this method can effectively discover hidden faults of the leads. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of a junction box for a high voltage motor;

[0014] Figure 2 for Figure 1 Schematic diagram of the insulator connection on the left side of the center;

[0015] Figure 3 for Figure 1 Schematic diagram of the connection of the middle top insulator;

[0016] In the figure, 1-box body, 2-insulator, 3-copper busbar, 4-cable terminal, 5-conductive rod, 6-motor lead. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1As shown, a junction box for a high-voltage motor comprises a box body 1, an insulator 2, a copper busbar 3, a cable terminal 4, a conductive rod 5, and a motor lead 6, wherein the insulator 2 has three in total, which are respectively arranged on the upper side and on the left and right sides of the box body 1, the copper busbar 3 has a hole in the middle, and is fixed to the insulator 2 by passing the conductive rod 5 through the hole in the middle of the copper busbar 3, holes are respectively punched at both ends of the copper busbar 3, and the cable terminal 4 and the motor lead 6 are connected, the back and bottom of the box body 1 are opened with holes, the motor lead 6 is introduced into the box body 1 through the opening on the back of the box body 1, and the cable terminal 4 is introduced into the box body 1 through the opening on the bottom of the box body 1.

[0020] The distance between the two ends of the copper bar 3 and the front and rear panels of the box body 1 is not less than 200mm, and the cross-sectional size of the copper bar 3 is 40mm*4mm. At the same time, the copper bars 3 on the left and right sides are straight copper bars, and the upper copper bar 3 is U-shaped copper bar. The end of the U-shaped copper bar connected to the cable terminal 4 is longer than the end connected to the motor lead 6. The distance between the copper bars 3 on the left and right sides and the bottom of the box body 1 is the same as the distance between the upper copper bar 3 and the bottom of the box body 1, so that the connection positions of the three cable terminals 4 are roughly in the same horizontal plane.

[0021] The above embodiments describe the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the changes and modifications made by the technicians in this field shall be within the scope of protection of the claims attached to the utility model.

Claims

1. A junction box for a high voltage motor, characterized in that: The invention comprises a box body (1), an insulator (2), a copper busbar (3), a cable terminal (4), and a motor lead (6), wherein the insulator (2) is fixed in the box body (1), the copper busbar (3) is fixed on the insulator (2) via a conductive rod (5), and two ends of the copper busbar (3) are respectively connected to the cable terminal (4) and the motor lead (6).

2. A junction box for a high voltage motor according to claim 1, characterized in that: There are three insulators (2) in total, which are arranged at the top and on the left and right sides of the box body (1) respectively.

3. A junction box for a high voltage motor according to claim 1, characterized in that: The box body (1) has holes on the back and bottom, the motor lead (6) is introduced into the box body (1) through the opening on the back of the box body (1), and the cable terminal (4) is introduced into the box body (1) through the opening on the bottom of the box body (1).

4. A junction box for a high voltage motor according to claim 1, characterized in that: The copper busbar (3) has a hole in the middle, and the conductive rod (5) passes through the hole in the middle of the copper busbar (3) and is connected to the insulator (2).

5. A junction box for a high voltage motor according to claim 1, characterized in that: The distance between the two ends of the copper busbar (3) and the front and rear panels of the box body (1) is not less than 200 mm.

6. A junction box for a high voltage motor according to claim 1, characterized in that: The cross-sectional dimensions of the copper busbar (3) are 40 mm*4 mm.

7. A junction box for a high voltage motor according to claim 2, characterized in that: The copper bar (3) fixed on the upper insulator (2) is a U-shaped copper bar.

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