CN110739593A

CN110739593A - conductive slip ring for lightning protection

Info

Publication number: CN110739593A
Application number: CN201911031398.4A
Authority: CN
Inventors: 周平涛; 何功; 王聪聪; 吴志亮; 邵小华
Original assignee: China Shipping Jiujiang Jingda Technology Co Ltd
Current assignee: China Shipping Jiujiang Jingda Technology Co Ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-01-31

Abstract

The invention discloses conductive slip rings for lightning protection, which comprise a fixed disc, a movable disc, a stator connecting disc, a bearing seat, a central shaft, a rotor connecting disc, a reed set, an upper bearing and a lower bearing, wherein the fixed disc, the stator connecting disc, the upper bearing, the lower bearing, the bearing seat and an outer ring are assembled to form a stator part, the movable disc, the rotor connecting disc, the central shaft, an inner ring, the upper bearing and the lower bearing are assembled to form a rotor part, the fixed disc is opposite to the movable disc in position and has a gap, the reed set is composed of reeds and contact blocks, screws penetrate through screw holes in the middles of the reeds to fix the reed set at the bottom of the fixed disc, and the contact blocks at the left end and the right end of each reed can be in sliding contact with the movable disc below.

Description

conductive slip ring for lightning protection

Technical Field

The invention relates to a conductive slip ring, in particular to conductive slip rings for lightning protection.

Background

The common conductive slip ring uses brush wires to make line contact with the rotor, the contacts mostly adopt brass, silver alloy and other cheap metal materials, and simultaneously, because of the problems of small contact area, low contact reliability, large contact resistance and low bearing capacity for instantaneous heavy current, the voltage drop generated by the common conductive slip ring is high and the heating is serious in the process of lightning current interference and impact in the natural environment, the contacts of the brush wires are easy to be punctured and fused to further cause damage of the conductive slip ring, so that the conductive slip ring can not carry out lightning current shunting and current guiding on a radar system turret part which rotates together with the rotor of the common conductive slip ring, and the lightning protection of the rotating equipment (such as the radar system turret part) can not be realized.

Disclosure of Invention

The invention aims to provide conductive slip rings which can reduce the contact resistance of a contact during sliding operation, improve the bearing capacity and the operation reliability of instant large current passing through the conductive slip rings, have large current bearing capacity and have lightning protection capacity.

The purpose of the invention is realized as follows:

A conductive slip ring for lightning protection is characterized by comprising a fixed disc, a movable disc, a stator connecting disc, a bearing seat, a central shaft, a rotor connecting disc, a reed set, an upper bearing and a lower bearing, wherein a fixed disc step groove is formed in the middle of the bottom of the annular stator connecting disc, the fixed disc step groove is matched and positioned with the fixed disc step groove, a screw is used for fixing the annular fixed disc at the bottom of the stator connecting disc, the movable disc step groove is formed in the annular movable disc, the screw is used for fixing the movable disc at the top of the annular rotor connecting disc through the matching and positioning of the movable disc step groove, the fixed disc and the movable disc are opposite in position and have a gap, the annular central shaft is sleeved among the stator connecting disc, the fixed disc and the movable disc, the screw is used for fixing the bottom of the central shaft at the top of the inner edge of the rotor connecting disc, the top of a Z-shaped bearing seat is fixed at the bottom of the inner edge of the stator connecting disc through the screw, the bottom of the bearing seat is positioned above the middle of the rotor connecting disc, the upper bearing seat, the upper bearing and the lower bearing are arranged between the outer side wall of the central shaft, the rotor connecting disc, the upper bearing, the inner ring of the rotor connecting disc, the stator disc, the upper bearing, the lower bearing, the upper bearing and the stator disc are arranged on the inner ring of the stator connecting disc, the stator.

And a plurality of groups of reed groups are uniformly arranged at the bottom of the fixed disc by taking the symmetric axis as the center.

The contact block arranged on the reed set is made of gold-nickel alloy AuNi10 which is a low-resistance precious metal material.

The working contact surface of the contact block arranged on the reed group is rectangular, and the side length is 7mm multiplied by 10 mm.

The contact blocks arranged on the reed set need to be polished, and the surface roughness after polishing is superior to 0.8 u.

The reed arranged on the reed group is made of elastic materials: beryllium bronze QBe2.0.

The invention is characterized in that a plurality of groups of reed groups are uniformly arranged, and a plurality of groups of contact blocks are simultaneously connected with the touch panel in parallel, thereby improving the working reliability, further reducing the contact resistance in the sliding working process of the contact and improving the current carrying capacity of the slip ring, and further , the slip ring has the characteristics of large current carrying capacity and reliable working, so that the protected radar system turret part can be used as a lightning conduction and shunt lightning strike component in the process of suffering from the interference of large current and striking, and the conductive slip ring has the lightning protection capacity.

Therefore, the invention has the following advantages:

1. the contact resistance of the contact during sliding work is reduced, and the bearing capacity of instantaneous large current passing through the conductive slip ring is improved;

2. the working reliability is improved, the current carrying capacity is high, and the lightning protection capacity is achieved;

3. structural design is reasonable, and is simple durable, can also realize the lightning protection function of rotating equipment.

Drawings

FIG. 1 is a schematic structural view of a conductive slip ring of the present invention;

FIG. 2 is an enlarged view of the contact portion of the contact block of the reed block and the moving plate of the present invention;

FIG. 3 is a schematic view of the structure of the reed assembly of the present invention;

FIG. 4 is a top view of FIG. 3;

in fig. 1: 1. a stator flange; 2. A reed group; 3. a movable plate; 31. a movable disc step groove; 4. a central shaft; 5. a bearing seat; 6. fixing a disc; 61. a fixed disc step groove; 7. an upper bearing; 8. an outer ring; 9. an inner ring; 10. a rotor flange; 11. a lower bearing; 12. a gap;

in fig. 2: 201. a reed; 202. a contact block; 203. and (4) screw holes.

The specific implementation mode is as follows:

the present invention will be described in further detail in with reference to the following examples and drawings.

conductive slip ring for lightning protection comprises a fixed disc 6, a movable disc 3, a stator connecting disc 1, a bearing seat 5, a central shaft 4, a rotor connecting disc 10, a reed group 2, an upper bearing 7 and a lower bearing 11, wherein a fixed disc step groove 61 is arranged in the middle of the bottom of an annular stator connecting disc 1, a screw fixes the annular fixed disc 6 at the bottom of the stator connecting disc 1 through the matching positioning of the fixed disc step groove 61, a movable disc step groove 31 is arranged on the annular movable disc 3, the screw fixes the movable disc 3 at the top of the annular rotor connecting disc 10 through the matching positioning of the movable disc step groove 31, a gap 12 exists between the fixed disc 1 and the movable disc 3, the annular central shaft 4 is sleeved in the middle of the stator connecting disc 1, the fixed disc 6 and the movable disc 3, the screw fixes the bottom of the central shaft 4 at the top of the inner edge of the rotor connecting disc 10, the top of the Z-shaped bearing seat 5 is fixed at the bottom of the stator connecting disc 1 through the screw, the bottom of the rotor connecting disc 1, the bearing seat 5 is arranged above the middle of the rotor connecting disc 10, the central shaft 4, the outer side wall of the central shaft 4, the bearing seat 5 is provided with the upper bearing disc 1, the inner ring 1, the bearing seat 1, the bearing seat 4 is provided with the bearing 2, the bearing seat, the bearing 2 is arranged on the outer ring 2, the bearing 2, the bearing seat is arranged below the bearing seat, the bearing seat, the bearing 2 is arranged below the bearing, the bearing seat, the bearing 2 is arranged below the bearing, the bearing seat, the bearing 2, the bearing seat is arranged below the bearing 2, the bearing seat, the bearing 2 is arranged below the bearing, the bearing.

Six groups of reed groups 2 are uniformly arranged at the bottom of the fixed disc 6 by taking the symmetric axis as the center.

The contact block 202 mounted on the reed group 2 is made of gold-nickel alloy AuNi10 which is a low-resistance precious metal material.

The contact block 202 installed on the reed group 2 has a rectangular working contact surface with a side length of 7mm × 10 mm.

The contact block 202 arranged on the reed group 2 needs to be polished, and the surface roughness after polishing is better than 0.8 u.

The reed 201 installed on the reed group 2 is made of elastic material: beryllium bronze QBe2.0, reed 201 can improve fatigue strength through solution treatment.

The upper bearing 7 and the lower bearing 11 are precision deep groove ball bearings.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims

The conductive slip ring for lightning protection is characterized by comprising a fixed disc, a movable disc, a stator connecting disc, a bearing seat, a central shaft, a rotor connecting disc, a reed set, an upper bearing and a lower bearing, wherein a fixed disc step groove is formed in the middle of the bottom of the annular stator connecting disc, a screw is used for fixing the annular fixed disc to the bottom of the stator connecting disc through matching and positioning of the fixed disc step groove, the movable disc is fixed to the top of the annular rotor connecting disc through matching and positioning of the movable disc step groove, a gap exists between the fixed disc and the movable disc, the annular central shaft is sleeved among the stator connecting disc, the fixed disc and the movable disc, the screw is used for fixing the bottom of the central shaft to the top of the inner edge of the rotor connecting disc, the top of a Z-shaped bearing seat is fixed to the bottom of the inner edge of the stator connecting disc through the screw, the bottom of the bearing seat is located above the middle of the rotor connecting disc, an upper bearing and a lower bearing are arranged between the outer side wall of the central shaft, the inner side wall of the bearing seat and the inner edge of the stator connecting disc, an upper bearing seat, an outer side wall of the rotor connecting disc, a lower bearing is provided with an inner ring , a rotor bearing and a rotor bearing, a stator connecting disc, a stator disc.
2. The conductive slip ring for lightning protection of claim 1, wherein: and a plurality of groups of reed groups are uniformly arranged at the bottom of the fixed disc by taking the symmetric axis as the center.
3. The conductive slip ring for lightning protection of claim 2, wherein: the contact block arranged on the reed set is made of gold-nickel alloy AuNi10 which is a low-resistance precious metal material.
4. The conductive slip ring for lightning protection of claim 2, wherein: the working contact surface of the contact block arranged on the reed group is rectangular, and the side length is 7mm multiplied by 10 mm.
5. The conductive slip ring for lightning protection of claim 2, wherein: the contact blocks arranged on the reed set need to be polished, and the surface roughness after polishing is superior to 0.8 u.
6. The conductive slip ring for lightning protection of claim 2, wherein: the reed arranged on the reed group is made of elastic materials: beryllium bronze QBe2.0.