Oil blocking type lightning protection brush holder
The insulating oil shield plate with metal teeth on the carbon brush effectively clears the oil film to facilitate lightning current conduction, enhancing the bearing's protection by directing currents away, addressing the obstruction issue in large diameter bearings.
Patent Information
- Application Number
- CN202422217279.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-11
AI Technical Summary
During the use of existing bearings, lubricating oil film blocks the conduction of lightning current, resulting in the inability to lead to the lightning current being output in time, reducing the lightning protection effect of the bearing.
An oil-blocking lightning protection brush holder is designed, which includes an insulated oil-blocking plate, a metal serrated plate and a carbon brush. The insulated oil-blocking plate scrapes away the oil film before the carbon brush comes into contact with the bearing. The metal serrated plate increases the metal tip to attract lightning current and leads out the lightning current through the carbon brush and wires.
It effectively avoids the lubricating oil film blocking lightning current conduction, ensures that the lightning current can be quickly drawn out, and improves the lightning protection effect of the bearing.
Smart Images
Figure CN223109778U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lightning protection brush holders, in particular to an oil-blocking type lightning protection brush holder. Background Technique
[0002] A carbon brush, also called a brush, as a sliding contact part, is a device for transmitting energy or signals between the fixed part and the rotating part of a motor, a generator or other rotating machinery; the materials of carbon brushes mainly include graphite, impregnated graphite, and metal graphite, which are generally made of pure carbon plus a solidifying agent.
[0003] When lightning protection is carried out on a bearing, the carbon brush contacts the surface of the bearing to lead out the lightning current on the surface of the bearing. However, during the use of the bearing, lubricating oil needs to be injected to reduce friction, and an oil film is formed on the ring surface of the bearing, blocking the conduction of the lightning current; moreover, for some bearings with particularly large diameters, the lightning current is easily dispersed and cannot be conducted out in time, reducing the lightning protection effect of the bearing.
[0004] Therefore, it is necessary to provide a new oil-blocking type lightning protection brush holder to solve the above technical problems. Content of the Utility Model
[0005] The technical problem solved by the utility model is to provide an oil-blocking type lightning protection brush holder that can avoid the conduction of the lightning current being blocked by the lubricating oil film and quickly lead out the lightning current.
[0006] To solve the above technical problems, the oil-blocking type lightning protection brush holder provided by the utility model includes: an insulating oil-blocking plate that contacts the surface of the bearing, and the insulating oil-blocking plate is installed at one end of the upper bracket; a metal sawtooth plate and a brush box are installed inside the insulating oil-blocking plate, an insertion plate is installed between the metal sawtooth plate and the brush box, a plurality of limiting rods are installed at the bottom end of the insertion plate, the limiting rods penetrate through the metal sawtooth plate, the upper bracket and the insulating oil-blocking plate, and the bottom end of the limiting rod is threadedly connected with a nut; a carbon brush is slidably connected inside the brush box, a mounting plate is rotatably connected to the top end of the brush box, a constant pressure spring is installed on the side wall of the mounting plate, and the constant pressure spring abuts against the side wall of the carbon brush.
[0007] Preferably, the upper bracket and the lower bracket are connected by bolts, and a plurality of rows of mounting holes for fixing the bolts are installed at the bottom end of the upper bracket.
[0008] Preferably, elastic plates are slidably connected inside both the brush box and the insulating oil-blocking plate, and blocks are provided on the surfaces of the elastic plates; the elastic plate inside the insulating oil-blocking plate abuts against the side wall of the brush box, and the blocks on the surface of this elastic plate are engaged with the inner side wall of the insulating oil-blocking plate.
[0009] Preferably, a card slot is provided on the surface of the brush box, and the elastic plate slidably connected inside the brush box abuts against the side wall of the mounting plate, and the clamping block on the surface of this elastic plate is engaged with the card slot.
[0010] Preferably, one end of the wire is connected to the surface of the carbon brush, and the other end of the wire is installed on the side wall of the upper bracket, and the metal serrated plate is electrically connected to the wire.
[0011] Compared with the related art, the oil-blocking lightning protection brush holder provided by the present invention has the following beneficial effects:
[0012] The present invention provides an oil-blocking lightning protection brush holder. One end of the upper bracket is installed with the insulating oil-blocking plate, and the insulating oil-blocking plate contacts the surface of the bearing. The insulating oil-blocking plate protects the carbon brush. During the rotation of the bearing, the insulating oil-blocking plate scrapes off the oil film before the carbon brush contacts the bearing ring, preventing the lubricating oil film from blocking the conduction of lightning current; the metal serrated plate is installed inside the insulating oil-blocking plate, and the end of the metal serrated plate surface in the shape of a sawtooth faces the bearing. By adding metal tips around the carbon brush, the lightning current is attracted to the vicinity of the carbon brush as much as possible. When the surface of the bearing has too large a lightning current, through tip discharge, the lightning current is better conducted out through the metal serrated plate, better protecting the bearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic structural diagram of a preferred embodiment of the oil-blocking lightning protection brush holder provided by the present invention;
[0014] Figure 2 is Figure 1 the schematic structural diagram of the insulating oil-blocking plate shown;
[0015] Figure 3 is Figure 1 the rear view of the insulating oil-blocking plate structure shown;
[0016] Figure 4 is Figure 1 the schematic internal structure diagram of the insulating oil-blocking plate shown.
[0017] Reference numerals in the drawings: 1, lower bracket; 2, upper bracket; 3, bolt; 4, carbon brush; 5, insulating oil-blocking plate; 6, metal serrated plate; 7, wire; 8, elastic plate; 9, clamping block; 10, card slot; 11, mounting plate; 12, brush box; 13, constant pressure spring; 14, insertion plate; 15, limiting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The present invention will be further described below with reference to the drawings and embodiments.
[0019] Please refer to Figures 1 to 4 ,Figure 1 Structural schematic diagram of a preferred embodiment of the oil-blocking lightning protection brush holder provided by the present utility model; Figure 2 For Figure 1 Structural schematic diagram of the insulating oil-blocking plate shown; Figure 3 For Figure 1 Rear view of the insulating oil-blocking plate structure shown; Figure 4 For Figure 1 Internal structural schematic diagram of the insulating oil-blocking plate shown. The oil-blocking lightning protection brush holder includes: an insulating oil-blocking plate 5 in contact with the surface of the bearing, and the insulating oil-blocking plate 5 is installed at one end of the upper bracket 2; a metal serrated plate 6 and a brush box 12 are installed inside the insulating oil-blocking plate 5, an insertion plate 14 is installed between the metal serrated plate 6 and the brush box 12, a plurality of limiting rods 15 are installed at the bottom end of the insertion plate 14, the limiting rods 15 penetrate through the metal serrated plate 6, the upper bracket 2 and the insulating oil-blocking plate 5, and the bottom end of the limiting rod 15 is threadedly connected to a nut. The insertion plate 14 fixes the metal serrated plate 6 inside the insulating oil-blocking plate 5, and the limiting rod 15 and the nut fix the insulating oil-blocking plate 5 at one end of the upper bracket 1, facilitating the contact between the insulating oil-blocking plate 5 and the surface of the bearing. The insulating oil-blocking plate 5 protects the carbon brush 4, and during the rotation of the bearing, the insulating oil-blocking plate 5 scrapes off the oil film before the carbon brush 4 contacts the bearing ring, preventing the lubricating oil film from blocking the conduction of lightning current.
[0020] The carbon brush 4 is slidably connected inside the brush box 12. The top end of the brush box 12 is rotatably connected to a mounting plate 11. A constant pressure spring 13 is installed on the side wall of the mounting plate 11, and the constant pressure spring 13 abuts against the side wall of the carbon brush 4. The constant pressure spring 13 always presses the carbon brush 4, so that the carbon brush 4 always contacts the surface of the bearing during the movement inside the brush box 12, facilitating the carbon brush 4 to lead out the lightning current on the surface of the bearing.
[0021] The metal serrated plate 6 is installed inside the insulating oil-blocking plate 5. One end of the surface of the metal serrated plate 6 with serrations faces the bearing. By adding metal tips around the carbon brush 4, the lightning current is attracted as much as possible near the carbon brush 4. When the lightning current on the surface of the bearing is too large, through tip discharge, the lightning current is better conducted out through the metal serrated plate 6, better protecting the bearing.
[0022] One end of the wire 7 is connected to the surface of the carbon brush 4, and the other end of the wire 7 is installed on the side wall of the upper bracket 2, and the metal serrated plate 6 is electrically connected to the wire 7. When the lightning current on the surface of the bearing is led out by the carbon brush 4 and the metal serrated plate 6, the lightning current is attracted to the surface of the upper bracket 2 through the wire 7. The upper bracket 2 is grounded through an electric wire, so that the lightning current on the surface of the upper bracket 2 is introduced into the ground to protect the bearing.
[0023] The upper bracket 2 and the lower bracket 1 are connected by bolts 3. The bolts 3 fix the upper bracket 2 and the lower bracket 1 together through the mounting holes on the surface of the upper bracket 2. Moreover, multiple rows of mounting holes for fixing the bolts 3 are installed at the bottom end of the upper bracket 2, which is convenient for adjusting the position of the upper bracket 2 on the surface of the lower bracket 2, changing the height of the upper bracket 1, and facilitating the contact between the insulating oil baffle 5 on the surface of the upper bracket 1 and the bearing.
[0024] Elastic plates 8 are slidably connected inside both the brush box 12 and the insulating oil baffle 5, and blocks 9 are provided on the surfaces of the elastic plates 8. The elastic plate 8 inside the insulating oil baffle 5 abuts against the side wall of the brush box 12, and the block 9 on the surface of this elastic plate 8 engages with the inner side wall of the insulating oil baffle 5. After the brush box 12 is placed inside the insulating oil baffle 5, the elastic plate 8 is inserted between the brush box 12 and the insulating oil baffle 5, so that the block 9 on the surface of the elastic plate 8 presses against the inner side wall of the insulating oil baffle 5, thereby causing the bottom surface of the elastic plate 8 to press against the brush box 12 and fixing the brush box 12 inside the insulating oil baffle 5.
[0025] A slot 10 is provided on the surface of the brush box 12. The elastic plate 8 slidably connected inside the brush box 12 abuts against the side wall of the mounting plate 11, and the block 9 on the surface of this elastic plate 8 engages with the slot 10. After the carbon brush 4 is placed inside the brush box 12, the elastic plate 8 is inserted downward into the brush box 12. During the insertion process of the elastic plate 8, it presses the mounting plate 11 downward, driving the block 9 to engage into the slot 10, fixing the elastic plate 8, and the elastic plate 8 presses the mounting plate 11 downward to make the constant pressure spring 13 always press the carbon brush 4.
[0026] The above are only the embodiments of the present invention, and thus do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.
Claims
1. An oil-blocking lightning protection brush holder, characterized in that Comprising: An insulating oil baffle (5) in contact with the bearing surface, the insulating oil baffle (5) being installed at one end of the upper bracket (2); a metal sawtooth plate (6) and a brush box (12) are installed inside the insulating oil baffle (5), an insertion plate (14) is installed between the metal sawtooth plate (6) and the brush box (12), a plurality of limiting rods (15) are installed at the bottom end of the insertion plate (14), the limiting rods (15) penetrate through the metal sawtooth plate (6), the upper bracket (2) and the insulating oil baffle (5), and the bottom end of the limiting rod (15) is threadedly connected to a nut; A carbon brush (4) is slidably connected inside the brush box (12), a mounting plate (11) is rotatably connected to the top end of the brush box (12), a constant pressure spring (13) is installed on the side wall of the mounting plate (11), and the constant pressure spring (13) abuts against the side wall of the carbon brush (4).
2. The oil-blocking lightning protection brush holder according to claim 1, characterized in that The upper bracket (2) and the lower bracket (1) are connected by bolts (3), and a plurality of rows of mounting holes for fixing the bolts (3) are installed at the bottom end of the upper bracket (2).
3. The oil-blocking lightning protection brush holder according to claim 1, characterized in that Elastic plates (8) are slidably connected inside both the brush box (12) and the insulating oil baffle (5), and clamping blocks (9) are provided on the surfaces of the elastic plates (8); the elastic plate (8) inside the insulating oil baffle (5) abuts against the side wall of the brush box (12), and the clamping block (9) on the surface of this elastic plate (8) is engaged with the inner side wall of the insulating oil baffle (5).
4. The oil-blocking lightning protection brush holder according to claim 3, characterized in that, A card slot (10) is provided on the surface of the brush box (12), the elastic plate (8) slidably connected inside the brush box (12) abuts against the side wall of the mounting plate (11), and the clamping block (9) on the surface of this elastic plate (8) is engaged with the card slot (10).
5. The oil-blocking lightning protection brush holder according to claim 1, characterized in that, One end of a wire (7) is connected to the surface of the carbon brush (4), the other end of the wire (7) is installed on the side wall of the upper bracket (2), and the metal sawtooth plate (6) is electrically connected to the wire (7).