CN212304988U - Multi-core wire passing structure of explosion-proof type low-power multi-speed motor winding lead wire - Google Patents
Multi-core wire passing structure of explosion-proof type low-power multi-speed motor winding lead wire Download PDFInfo
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- CN212304988U CN212304988U CN202021174946.7U CN202021174946U CN212304988U CN 212304988 U CN212304988 U CN 212304988U CN 202021174946 U CN202021174946 U CN 202021174946U CN 212304988 U CN212304988 U CN 212304988U
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Abstract
The utility model discloses a multicore of the many speed motor winding lead wire of flame-proof type miniwatt crosses line structure, its including set up in the terminal box bottom and communicate terminal box chamber and motor casing main explosion-proof chamber the mounting hole, set up in crossing line group casing, running through in the mounting hole cross inside a plurality of lead wires, the locking of line group casing it is full to cross lock nut and the packing of line group casing injectd its upper and lower degree of freedom cross inside and realize fire-retardant sealed glue of group casing. The utility model discloses its compact structure, simple to operate, and can simplify terminal box cavity structure, can effectively solve the line problem of crossing between the cavity of this type of equipment.
Description
[ technical field ] A method for producing a semiconductor device
The utility model belongs to the technical field of flame-proof type electrical equipment, especially, relate to a multicore of the many speed motor winding lead wire of flame-proof type miniwatt crosses line structure.
[ background of the invention ]
At present, the wiring structure of the winding lead wire of the conventional explosion-proof type low-power motor mostly realizes the connection between a main explosion-proof cavity of a shell and a junction box cavity by combining a penetration type explosion-proof type wiring bolt and an insulating sleeve. The wiring structure of a winding lead wire of an explosion-proof type low-power motor in the prior art is shown in fig. 1 and comprises an explosion-proof type wiring bolt 1 ', an explosion-proof type insulating sleeve 2 ', an upper stop gasket 3 ', a locking nut 4 ' and a lower stop gasket 5 '. The main explosion-proof cavity of the shell is connected with the electric elements in the junction box cavity through the explosion-proof wiring bolt 1' to realize circuit conduction connection. However, for a special explosion-proof motor with multi-pole rotating speed, a wiring structure with a plurality of lead wires is provided. According to the requirements on electrical clearance and creepage distance (see the position and the requirements shown in figure 1) in related explosion-proof standards, the structure and the cavity volume of the conventional junction box are very narrow or do not reach the standard, and the conventional junction box is not easy to disassemble and maintain. In order to reach the standard, the external dimension is designed to be large, and particularly, the proportion of the external dimension to the whole external structure is extremely inconsistent on the motor with a small machine base number.
Therefore, a new multi-core wire passing structure of the winding lead wire of the flameproof type low-power multi-speed motor is needed to be provided to solve the problems.
[ Utility model ] content
A primary object of the utility model is to provide a line structure is crossed to multicore of the many speed motor winding lead wire of flame-proof type miniwatt, its compact structure, simple to operate, and can simplify terminal box cavity structure, can effectively solve the line problem of crossing between the cavity of this type of equipment.
The utility model discloses a following technical scheme realizes above-mentioned purpose: a multi-core wire passing structure of a winding lead of an explosion-proof type low-power multi-speed motor comprises a mounting hole, a wire passing group shell, a plurality of lead wires, a locking nut and flame-retardant sealant, wherein the mounting hole is formed in the bottom of a junction box and is used for communicating a junction box cavity with a main explosion-proof cavity of a motor shell, the wire passing group shell is arranged in the mounting hole, the plurality of lead wires penetrate through the interior of the wire passing group shell, the locking nut is used for locking the wire passing group shell to limit the vertical freedom degree of the wire passing group shell, and the flame.
Furthermore, the upper free end of the lead wire is communicated with a jointing clamp circuit in the junction box cavity, and the lower free end of the lead wire is communicated with an electronic element circuit in the main explosion-proof cavity of the motor shell.
Furthermore, the wire passing group shell is a hollow copper explosion-proof structural member.
Furthermore, the wire passing group shell comprises a hollow cylindrical barrel which forms a containing cavity which is through up and down, a limiting convex ring which is arranged on the circumference of the lower end of the cylindrical barrel and used for abutting against the lower surface of the junction box, and an external thread structure which is arranged on the circumferential surface of the upper part of the cylindrical barrel.
Furthermore, the locking nut is in threaded connection with the external thread structure to realize locking and fixing of the wire passing group shell.
Furthermore, the lead wire comprises a cross-sectional area of 4-6 mm2The cross-sectional area of the lead wire of the copper core cable is 0.75-1 mm2The control lead line of (2).
Compared with the prior art, the utility model relates to a multicore of many speed motor winding lead wires of flame-proof type miniwatt crosses line structure's beneficial effect lies in: the sealing performance and the explosion-proof flame-retardant performance are greatly improved by encapsulating the adjacent lead wires passing through the wire group shell and the lead wires and the wire group shell by flame-retardant sealant, and the insulativity between the lead wires and the wire group shell is good; the insulation performance of the lead wire meets the national standard, the insulation sheath and the pouring sealant material have flame retardance, the highest working temperature is more than or equal to 155 ℃, and the relative humidity reaches 98 percent; the junction box explosion-proof cavity structure has the advantages of compact overall structure, convenience in installation and strong practicability, and is convenient to disassemble, assemble, repair and maintain while the structure of the junction box explosion-proof cavity is simplified.
[ description of the drawings ]
FIG. 1 is a wiring structure of a wiring of a winding lead wire of an explosion-proof type low-power motor in the prior art;
fig. 2 is a schematic diagram of a wiring structure according to an embodiment of the present invention;
fig. 3 is a schematic structural view of the middle wire-passing group housing of the present invention;
the figures in the drawings represent:
the multi-core wire passing structure of the winding lead wire of the 100 flame-proof type low-power multi-speed motor; 101, a junction box; 102 a terminal block cavity; 103 a jointing clamp;
1, mounting holes; 2, a line group shell, 21 column barrels and 22 limit convex rings; 3, leading wires; 4, locking the nut; 5 flame-retardant sealant.
[ detailed description ] embodiments
Example (b):
referring to fig. 2-3, the multi-core wire passing structure 100 of the winding lead wire of the flameproof small-power multi-speed motor of the embodiment includes a mounting hole 1 disposed at the bottom of a junction box 101 and communicating a junction box cavity 102 with a main explosion-proof cavity (not labeled in the figures) of the motor housing, a wire group housing 2 disposed in the mounting hole 1, a plurality of lead wires 3 passing through the inside of the wire group housing 2, a locking nut 4 locking the wire group housing 2 to limit the upper and lower degrees of freedom, and a flame retardant sealant 5 filling the inside of the wire group housing 2 and realizing flame retardancy, wherein the upper free ends of the lead wires 3 are in circuit communication with a wire clamp 103 in the junction box cavity 102, and the lower free ends are in circuit communication with electronic elements in the main explosion-proof cavity of the motor housing.
The wire group shell 2 is a hollow copper explosion-proof structural member, so that the explosion-proof requirement can be met, and the explosion-proof requirement can be met. The wire-passing set housing 2 includes a hollow cylindrical casing 21 forming a vertically through receiving cavity 21, a limiting convex ring 22 disposed on the circumference of the lower end of the cylindrical casing 21 and used for abutting against the lower surface of the junction box 101, and an external thread structure (not shown) disposed on the circumferential surface of the upper portion of the cylindrical casing 21. The locking nut 4 is in threaded connection with the external thread structure to realize locking and fixing of the wire group shell 2.
In the embodiment, the lead wires 3 are provided with 12 lead wires, and the lead wires comprise cross sections of 4-6 mm2The lead wire of the copper core cable is 0.75-1 mm2The control lead line of (2).
When needing to overhaul and maintain, only need loosen lock nut 4 and binding clip 103 to the locking effect of 3 tip of leading wire, can cross the line structure with the multicore and take out and overhaul, ann tears the convenience open.
In the multi-core wire passing structure 100 of the winding lead wire of the flameproof small-power multi-speed motor, the sealing performance and the explosion-proof flame-retardant performance are greatly improved by encapsulating the adjacent lead wires passing through the wire passing group shell and the lead wires and the wire passing group shell by flame-retardant sealant, and the insulativity between the lead wires and the wire passing group shell is good; the insulation performance of the lead wire meets the national standard, the insulation sheath and the pouring sealant material have flame retardance, the highest working temperature is more than or equal to 155 ℃, and the relative humidity reaches 98 percent; the junction box explosion-proof cavity structure has the advantages of compact overall structure, convenience in installation and strong practicability, and is convenient to disassemble, assemble, repair and maintain while the structure of the junction box explosion-proof cavity is simplified.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (6)
1. A multi-core wire passing structure of a winding lead wire of an explosion-proof type low-power multi-speed motor is characterized in that: the fire-retardant sealing glue comprises a mounting hole, a line group shell, a plurality of lead wires, locking nuts and a fire-retardant sealing glue, wherein the mounting hole is formed in the bottom of a junction box and is communicated with a junction box cavity and a main explosion-proof cavity of a motor shell, the line group shell is arranged in the mounting hole, the plurality of lead wires penetrate through the inside of the line group shell, the locking nuts are used for locking the line group shell to limit the degree of freedom of the line group shell, and the fire-retardant sealing glue is filled in.
2. The multi-core wire passing structure of the winding lead wire of the flameproof small-power multi-speed motor as claimed in claim 1, characterized in that: the upper free end of the lead wire is communicated with a jointing clamp circuit in the junction box cavity, and the lower free end of the lead wire is communicated with an electronic element circuit in the main explosion-proof cavity of the motor shell.
3. The multi-core wire passing structure of the winding lead wire of the flameproof small-power multi-speed motor as claimed in claim 1, characterized in that: the wire passing group shell is a hollow copper explosion-proof structural member.
4. The multi-core wire passing structure of the winding lead wire of the flameproof small-power multi-speed motor as claimed in claim 1, characterized in that: the wire passing group shell comprises a hollow cylindrical shell, a limiting convex ring and an external thread structure, wherein the cylindrical shell is provided with a storage cavity which is communicated up and down, the limiting convex ring is arranged on the circumference of the lower end of the cylindrical shell and is used for abutting against the lower surface of the junction box, and the external thread structure is arranged on the circumferential surface of the upper part of the cylindrical shell.
5. The multi-core wire passing structure of the winding lead wire of the flameproof small-power multi-speed motor according to claim 4, characterized in that: and the locking nut is in threaded connection with the external thread structure to realize locking and fixing of the wire passing group shell.
6. The multi-core wire passing structure of the winding lead wire of the flameproof small-power multi-speed motor as claimed in claim 1, characterized in that: the lead wire comprises a cross-sectional area of 4-6 mm2The cross-sectional area of the lead wire of the copper core cable is 0.75-1 mm2The control lead line of (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021174946.7U CN212304988U (en) | 2020-06-23 | 2020-06-23 | Multi-core wire passing structure of explosion-proof type low-power multi-speed motor winding lead wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021174946.7U CN212304988U (en) | 2020-06-23 | 2020-06-23 | Multi-core wire passing structure of explosion-proof type low-power multi-speed motor winding lead wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212304988U true CN212304988U (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021174946.7U Active CN212304988U (en) | 2020-06-23 | 2020-06-23 | Multi-core wire passing structure of explosion-proof type low-power multi-speed motor winding lead wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212304988U (en) |
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2020
- 2020-06-23 CN CN202021174946.7U patent/CN212304988U/en active Active
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