Motor lead supporting and insulating device

Abstract

The utility model discloses a motor lead supporting and insulating device which comprises a sealing gasket, a rubber plug and a clamping joint. Four corners of the sealing gasket are respectively provided with a mounting hole, and screws for fixing insulators penetrate through the mounting holes to fix the sealing gasket on the motor case; a through hole is further formed in the sealing gasket, an insulating sleeve is inserted into the through hole, one part of the insulating sleeve is located in the motor case, the other part of the insulating sleeve extends into the motor junction box, a cavity is formed in the insulating sleeve in the length direction of the insulating sleeve, the cavity comprises a lead channel and a rubber plug cavity, and the rubber plug cavity is located at one end of the junction box; the clamping joint is detachably fixed at one end, which is positioned at the junction box, of the insulating sleeve, and the rubber plug is clamped and fixed in a rubber plug cavity of the insulating sleeve; and the rubber plug and the clamping joint are correspondingly provided with lead channels. According to the utility model, the insulation support and fixation effects on the lead are realized, the friction between the penetrating wire of the motor case and the motor junction box and the lead is avoided, and the communication between the motor case and the junction box can be effectively isolated.

Description

Technical Field

[0001] The utility model relates to the field of electrical technology, in particular to a motor lead support insulation device. Background Art

[0002] At present, no matter explosion-proof or non-explosion-proof high-voltage motors are used, the motor stator winding is connected to the terminal in the junction box through the lead wire, and the terminal is fixed in the junction box by insulators made of insulating materials such as phenolic resin. However, in the past, many grounding and phase short circuit faults in the junction box have occurred, which are closely related to the exposed terminal. Therefore, in more field practices, technical workers are accustomed to removing the insulator, cutting off the terminal, replacing it with a terminal nose and lead crimping, and then crimping the lead nose and the power cable nose with screws, and finally wrapping the crimping part of the two terminal noses with insulating materials, so as to prevent the exposed electrical parts in the motor junction box. However, such practice cannot effectively block the connection between the motor junction box and the motor chassis, which will cause the dust to affect each other, and will also cause the high temperature in the chassis to affect the motor junction box, accelerate the aging of the power cable, and pose certain safety hazards. In addition, the lead wire has no effective support and is very easy to contact with the wire threading hole of the motor chassis. This contact will cause friction and damage the lead wire insulation, which poses certain safety hazards. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and provide a motor lead support insulation device, which plays the role of insulating support and fixing the lead, does not cause friction between the threading and the lead of the motor case and the motor junction box, and can effectively isolate the connection between the motor case and the junction box.

[0004] The technical solution of the utility model is:

[0005] The invention discloses an insulating device for supporting lead wires of a motor, comprising a sealing pad, a rubber plug and a clamping joint; the sealing pad is provided with mounting holes at the four corners respectively, and the sealing pad is fixed to the motor case after the insulator fixing screws pass through the mounting holes; the sealing pad is also provided with a through hole, and an insulating sleeve is inserted into the through hole, a part of the insulating sleeve is located in the motor case, and a part of the insulating sleeve extends into the motor junction box, a cavity is provided in the insulating sleeve along its length direction, the cavity comprises a lead wire channel and a rubber plug cavity, and the rubber plug cavity is located at one end of the junction box; the clamping joint is detachably fixed to the end of the insulating sleeve located at the junction box, and the rubber plug is clamped in the rubber plug cavity of the insulating sleeve; the rubber plug and the clamping joint are provided with lead wire channels correspondingly.

[0006] Preferably, the sealing gasket is made of aging-resistant rubber.

[0007] Preferably, the insulating sleeve is made of insulating material.

[0008] Preferably, the clamping joint comprises a cover plate, and a circle of edges is arranged at the outer edge of the cover plate.

[0009] Preferably, the insulating sleeve is threadedly connected to the clamping joint.

[0010] Preferably, the insulating sleeve is provided with an external thread, and the inner side of the edge is provided with an internal thread.

[0011] Preferably, the rubber plug is adapted to the shape and size of the rubber plug cavity.

[0012] Preferably, the rubber plug is in a truncated cone shape.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The motor lead support insulation device of the utility model plays the role of insulating support and fixing the lead, does not cause the threading and lead friction between the motor case and the motor junction box, and can effectively isolate the connection between the motor case and the junction box, preventing the mutual influence of dust and the high temperature in the case from affecting the motor junction box and accelerating the aging of the power cable.

[0015] 2. The motor lead support insulation device of the utility model has a simple structure, does not occupy too much space in the junction box, has low cost, is easy to operate, and greatly eliminates the potential safety hazards in the on-site wiring practice of some high-voltage motors. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic structural diagram of the motor lead wire supporting insulation device before use.

[0017] Figure 2 The utility model is a structural schematic diagram of the motor lead wire supporting insulation device when in use.

[0018] Figure 3 It is a side view of the sealing pad and the insulating sleeve of the utility model.

[0019] In the figure, 1, sealing gasket; 101, mounting hole; 2, rubber plug; 3, clamping joint; 301, cover plate; 302, edge; 4, screw; 5, insulating sleeve; 6, lead channel; 7, rubber plug cavity; 8, external thread; 9, internal thread; 10, lead. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention.

[0021] Example 1

[0022] like Figure 1-3 As shown, this embodiment provides a motor lead support insulation device, including a rectangular sealing gasket 1, a truncated cone-shaped rubber plug 2 and a clamping joint 3. Among them, the sealing gasket 1 is respectively provided with mounting holes 101 at the four corners, and the sealing gasket 1 is fixed on the motor case after the insulator fixing screws 4 pass through the mounting holes 101; at the same time, the sealing gasket 1 is also provided with a through hole at the center, and an insulating sleeve 5 is inserted into the through hole, a part of the insulating sleeve 5 is located in the motor case, and a part of the insulating sleeve 5 extends into the motor junction box, and a cavity is provided in the insulating sleeve 5 along its length direction, and the cavity includes a lead channel 6 and a rubber plug cavity 7, and the rubber plug cavity 7 is located at one end of the junction box. The clamping joint 3 includes a cover plate 301, a circle of edge 302 is arranged at the outer edge of the cover plate 301, an external thread 8 is arranged on the insulating sleeve 5, and an internal thread 9 is arranged on the inner side of the edge 302, so that the clamping joint 3 is threadedly connected to one end of the insulating sleeve 5 located in the junction box, and the rubber plug 2 is clamped in the rubber plug cavity 7 of the insulating sleeve 5; the rubber plug 2 and the clamping joint 3 are correspondingly provided with lead channels 6.

[0023] Among them, the sealing gasket 1 is made of aging-resistant rubber (such as EPDM rubber); the insulating sleeve 5 is made of insulating material (such as cast phenolic resin); the rubber plug 2 is made of silicone; and the clamping joint 3 is made of plastic material.

[0024] When using, Figure 2 As shown, the sealing gasket 1 is fixed to the outer wall of the motor case by passing the insulator fixing screw 4 through the mounting hole 101 of the sealing gasket 1, and the insulating sleeve 5 is inserted into the through hole at the center of the sealing gasket 1, with one part in the motor case and the other part in the motor junction box. Then the lead wire 10 passes through the lead wire channel 6 of the insulating sleeve 5 and the plug cavity 7 from the motor case and enters the motor junction box, and then the lead wire 10 is inserted into the lead wire channel 6 of the plug 2 to a suitable length for convenient wiring in the motor junction box, and finally the clamping joint 3 is screwed on the insulating sleeve 5, so that the plug 2, which is compatible with the shape and size of the plug cavity 7, is pressed to fill the plug cavity 7. The size of the lead wire channel 6 of the plug 2 and the clamping joint 3 is compatible with the outer diameter of the lead wire 10, so that when the plug 2 is pressed, the inner wall of the plug 2 is closely fitted with the lead wire 10, thereby playing the role of supporting and fixing the lead wire 10, preventing friction, and achieving the purpose of isolating the motor case and the motor junction box.

[0025] The motor lead 10 supporting insulation device of this embodiment has a simple structure, does not occupy too much space in the junction box, has low cost, is easy to operate, and greatly eliminates the potential safety hazards in the on-site wiring practice of some high-voltage motors.

Claims

1. A motor lead support insulation device, characterized in that: The invention comprises a sealing pad (1), a rubber plug (2) and a clamping joint (3); the sealing pad (1) is respectively provided with mounting holes (101) at the four corners thereof, and the sealing pad (1) is fixed on the motor case after the insulator fixing screws (4) pass through the mounting holes (101); the sealing pad (1) is also provided with a through hole, and an insulating sleeve (5) is inserted into the through hole; a part of the insulating sleeve (5) is located in the motor case, and a part thereof extends into the motor junction box; a cavity is provided in the insulating sleeve (5) along its length direction, and the cavity comprises a lead-in channel (6) and a rubber plug cavity (7), and the rubber plug cavity (7) is located at one end of the junction box; the clamping joint (3) is detachably fixed to the end of the insulating sleeve (5) located at the junction box, and the rubber plug (2) is clamped in the rubber plug cavity (7) of the insulating sleeve (5); the rubber plug (2) and the clamping joint (3) are correspondingly provided with a lead-in channel (6).

2. The motor lead support insulation device according to claim 1, characterized in that: The sealing pad (1) is made of aging-resistant rubber.

3. The motor lead support insulation device according to claim 1, characterized in that: The insulating sleeve (5) is made of insulating material.

4. The motor lead support insulation device according to claim 1, characterized in that: The clamping joint (3) comprises a cover plate (301), and a circle of edge (302) is arranged at the outer edge of the cover plate (301).

5. The motor lead support insulation device according to claim 4, characterized in that: The insulating sleeve (5) is threadedly connected to the clamping joint (3).

6. The motor lead support insulation device according to claim 5, characterized in that: The insulating sleeve (5) is provided with an external thread (8), and the inner side of the edge (302) is provided with an internal thread (9).

7. The motor lead support insulation device according to claim 1, characterized in that: The rubber plug (2) is compatible with the rubber plug cavity (7) in shape and size.

8. The motor lead wire supporting insulation device according to claim 7, characterized in that: The rubber plug (2) is in the shape of a truncated cone.

Images