Novel explosion-proof motor wiring terminal

Abstract

The utility model provides a novel explosion-proof motor wiring terminal, which comprises a copper sleeve, an internal lead wire, an external lead wire, a DMC molding compound, a fastener, a terminal board and an explosion-proof lining, a wire core of the internal lead wire is assembled in an inner hole at the lower end of the copper sleeve, and a wire core of the external lead wire is assembled in an inner hole at the upper end of the copper sleeve. The DMC molding compound wraps the joint of the internal lead wire, the external lead wire and the copper sleeve, the joint of the internal lead wire, the external lead wire and the copper sleeve and the DMC molding compound are assembled in the flame-proof lining, and the flame-proof lining is fixed on the terminal board by a fastener. The cutting motor of the coal mining machine is limited by the limited space in a junction box, and a common wiring terminal cannot be placed. The novel explosion-proof motor wiring terminal provided by the utility model is convenient for wiring and saves space.

Description

Technical Field

[0001] The utility model relates to explosion-proof motor structure design and manufacturing technology, in particular to a novel explosion-proof motor connection terminal. Background Art

[0002] Due to its function, the cutting motor of the coal mining machine needs to be installed in the rocker arm housing of the coal mining machine main machine. In particular, the thin coal seam coal mining machine has a small size and the space inside the rocker arm housing is very tight, so the motor junction box needs to be reduced in size. The traditional lead-in wiring terminal cannot meet the requirements of the electrical clearance and creepage distance inside the motor junction box. At this time, a new type of terminal is needed to meet the above requirements. Summary of the invention

[0003] The utility model aims to provide a novel explosion-proof motor terminal.

[0004] A novel explosion-proof motor terminal comprises a copper sleeve, an internal lead wire, an external lead wire, a DMC molding compound, fasteners, a terminal board and a flameproof bushing, wherein the wire core of the internal lead wire is fitted in the inner hole at the lower end of the copper sleeve, the wire core of the external lead wire is fitted in the inner hole at the upper end of the copper sleeve, the DMC molding compound wraps the connection between the internal lead wire, the external lead wire and the copper sleeve, the connection between the internal lead wire, the external lead wire and the copper sleeve and the DMC molding compound are fitted in the flameproof bushing, and the flameproof bushing is fixed to the terminal board by fasteners.

[0005] Preferably, an annular groove is provided in the middle of the outer wall of the copper sleeve for fastening and fitting with the DMC molding compound.

[0006] The utility model is a terminal that first installs the wire core of the internal lead wire in the inner hole at the lower end of the copper sleeve, and the wire core of the external lead wire in the inner hole at the upper end of the copper sleeve, and then solders and presses the wire core, and finally uses a molding process to integrally inject the flameproof bushing and DMC molding material, inlays the copper sleeve and the lead wire inside, and connects the internal lead wire of the motor with the external cable. The coal cutting motor of the coal mining machine is limited by the limited space in the junction box, and ordinary terminal blocks cannot be placed; the new explosion-proof motor terminal provided by the utility model is convenient for wiring and saves space. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the structure of the new explosion-proof motor terminal;

[0008] In the figure: copper sleeve 1, internal lead wire 2, external lead wire 3, DMC molding material 4, fastener 5, terminal board 6, flameproof bushing 7. DETAILED DESCRIPTION

[0009] In order to make the technical solution of the present utility model easier to understand, the technical solution of the present utility model is now clearly and completely described in the form of specific embodiments in combination with the accompanying drawings.

[0010] See also Figure 1 The new explosion-proof motor terminal includes a copper sleeve 1, an internal lead wire 2, an external lead wire 3, a DMC molded material 4, a fastener 5, a terminal board 6 and a flameproof bushing 7. The core of the internal lead wire 2 is mounted in the lower inner hole of the copper sleeve 1, and the core of the external lead wire 3 is mounted in the upper inner hole of the copper sleeve 1. The DMC molded material 4 wraps the connection between the internal lead wire 2, the external lead wire 3 and the copper sleeve 1. The connection between the internal lead wire 2, the external lead wire 3 and the copper sleeve 1 and the DMC molded material 4 are mounted in the flameproof bushing 7, and the flameproof bushing 7 is fixed to the terminal board 6 by the fastener 5.

[0011] An annular groove a is provided in the middle of the outer wall of the copper sleeve 1 for fastening and assembling with the DMC molding compound.

[0012] The original terminal structure consists of an insulator and a terminal post. When the motor is working, the terminal post is a conductor exposed to the air inside the junction box. The electrical clearance and creepage distance requirements of the corresponding working voltage need to be met between adjacent conductors, so there must be a sufficient distance requirement between adjacent terminals, which has a relative limit on the space of the junction box. The utility model firstly installs the wire core of the internal lead wire 2 in the inner hole at the lower end of the copper sleeve 1, and the wire core of the external lead wire 3 in the inner hole at the upper end of the copper sleeve 1, and then solders and presses the wire core, and finally, through the molding process, the flameproof bushing 7 and the DMC molding material 4 are integrally injection molded, and the copper sleeve 1 and the lead wire are embedded inside to connect the internal lead wire of the motor with the external cable. Thus, from a structural point of view, the structural conductor of the utility model is wrapped inside the insulator and is not exposed to the air, so there is no need to consider the electrical clearance and creepage distance requirements between adjacent conductors. Not only is the volume itself reduced, but there are no strict requirements for the distance between adjacent terminals. This greatly reduces the volume of the motor terminal box. The new explosion-proof motor terminal provided by the utility model is convenient for wiring and saves space.

[0013] It should be noted that the embodiments described herein are only partial embodiments of the present invention, rather than all implementations of the present invention, and the embodiments are only exemplary, and their role is only to provide a more intuitive and clear way to understand the content of the present invention, rather than to limit the technical solutions described in the present invention. Without departing from the concept of the present invention, all other implementation methods that ordinary technicians in the field can think of without creative work, and other simple replacements and various changes to the technical solutions of the present invention, all belong to the protection scope of the present invention.

Claims

1. A new explosion-proof motor terminal, characterized by: The new explosion-proof motor terminal includes a copper sleeve, an internal lead wire, an external lead wire, a DMC molding compound, fasteners, a terminal board and a flameproof bushing. The wire core of the internal lead wire is installed in the inner hole at the lower end of the copper sleeve, and the wire core of the external lead wire is installed in the inner hole at the upper end of the copper sleeve. The DMC molding compound wraps the connection between the internal lead wire, the external lead wire and the copper sleeve. The connection between the internal lead wire, the external lead wire and the copper sleeve and the DMC molding compound are installed in the flameproof bushing, and the flameproof bushing is fixed to the terminal board with fasteners.

2. The novel explosion-proof motor terminal according to claim 1 is characterized in that: An annular groove is provided in the middle of the outer wall of the copper sleeve for fastening and assembly with the DMC molding compound.

Images