Conductive structure of surfacing carbon brush of continuous casting roller
By designing an optimized carbon brush conductive structure on the continuous casting roller surfacing machine tool, the problem of poor conductivity between the carbon brush and the workpiece is solved, and the reliable conduction of the welding circuit and the improvement of welding quality is achieved.
Patent Information
- Application Number
- CN202421746551.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-23
AI Technical Summary
In steel mill production, continuous casting rollers are prone to oxidation peeling and cracks on the surface of the roller after long-term use, resulting in poor welding quality. In the prior art, carbon brushes and workpieces conduct poorly, affecting welding quality.
A continuous casting roller surfacing carbon brush conductive structure is designed. By installing a carbon brush unit and conductive copper plate on the carbon brush bracket, the carbon brush block is ensured to maintain full contact with the spindle, and indirectly electrically connect to the workpiece through the chuck that clamps the workpiece on the spindle, optimizing the installation position and structure of the carbon brush.
This conductive structure ensures reliable conduction of the welding circuit, ensures normal welding and improves the quality of welding repair of continuous casting rollers.
Smart Images
Figure CN222790847U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of welding equipment, in particular to a continuous casting roller surfacing carbon brush conductive structure. Background Art
[0002] In steel production, continuous casting rollers are mainly used to keep the steel billets solidified. Under the effects of mechanical stress, thermal fatigue and metal wear caused by long-term use, the roller surface is oxidized and peeled off, which can easily cause cracks and breakage, posing safety hazards and short service life. In the prior art, surfacing technology is usually used to repair continuous casting rollers.
[0003] Before surfacing welding, the surfacing welding wire is first passed through the wire feed wheel and the conductive nozzle, the workpiece is connected to the negative electrode of the welding machine output end, and the welding gun is connected to the positive electrode of the welding machine output end. After power is turned on, an arc is formed between the welding wire and the workpiece. As the welding gun swings forward to weld, an arc begins to be generated between the welding wire and the workpiece, and a stable welding process begins. Among them, the workpiece needs to have the ability to rotate for welding, so a carbon brush is generally used to conduct electricity with the workpiece.
[0004] However, when the negative electrode of the welding machine is connected to the workpiece, the workpiece surface may not be smooth and may have pits and bumps, resulting in poor conductivity between the carbon brush and the workpiece, affecting the welding quality. Utility Model Content
[0005] Based on the above problems, the purpose of the utility model is to provide a conductive structure of a carbon brush for continuous casting roller cladding, optimize the installation position and structure of the carbon brush, and ensure reliable conduction of the welding circuit.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A continuous casting roller surfacing carbon brush conductive structure, comprising:
[0008] The carbon brush holder is installed on the main spindle box of the continuous casting roller cladding machine and is located between the slewing bearing and the chuck of the main spindle box. The carbon brush holder is provided with a through hole for allowing the main spindle of the main spindle box to pass through.
[0009] A carbon brush unit, wherein a plurality of carbon brush units are evenly distributed and installed on a carbon brush bracket around a perforated circumference, each carbon brush unit comprising a carbon brush block, and the carbon brush block is in sliding contact with the main shaft;
[0010] A conductive copper plate is electrically connected to the lead of each carbon brush block, and the conductive copper plate is electrically connected to the negative pole of the electric welding machine.
[0011] As an optional solution, the carbon brush unit also includes a carbon brush fixing seat, which is fixed on the carbon brush bracket. A limit block is arranged on the carbon brush fixing seat and at the end of the carbon brush block facing away from the main shaft. A spring is arranged between the carbon brush block and the limit block. The spring is used to press the carbon brush block so that the carbon brush block maintains contact with the main shaft.
[0012] As an optional solution, the carbon brush fixing seat is provided with a plurality of installation slots along the direction of the carbon brush block toward the main axis, and the limit block is installed in any installation slot, so that the pressing force of the spring on the carbon brush block can be adjusted.
[0013] As an optional solution, a limiting frame is provided on the carbon brush fixing seat, and the carbon brush block passes through the limiting frame.
[0014] As an optional solution, the conductive copper plate is arc-shaped or circular and distributed on the outer ring of each carbon brush unit. A through hole is opened on each limit block, and the lead of each carbon brush block passes through the corresponding through hole and is wound around the conductive copper plate.
[0015] As an optional solution, a flange for forming an outer limit for the spring is arranged on the surface of the limit block facing the carbon brush block, and a convex edge for forming an inner limit for the spring extends from the orifice of the through hole.
[0016] As an optional solution, the conductive copper plate is wound and fixed by the lead wires of each carbon brush block and is suspended in the air, so that the conductive copper plate does not contact the carbon brush bracket.
[0017] As an optional solution, the carbon brush holder includes a mounting plate located between the slewing bearing and the chuck, a plurality of legs extending from the outer edge of the mounting plate and fixed to the outer shell of the spindle box, and the carbon brush unit is mounted on the surface of the mounting plate facing the slewing bearing.
[0018] The beneficial effects of the utility model are as follows: the conductive structure of the carbon brush for surfacing welding of the continuous casting roller moves the installation position of the carbon brush from the workpiece to the main shaft that drives the workpiece to rotate, and optimizes the carbon brush structure so that the carbon brush block maintains full contact with the main shaft, and is indirectly electrically connected to the workpiece through a chuck that clamps the workpiece on the main shaft, thereby ensuring reliable conduction of the welding circuit, allowing surfacing welding to proceed normally, and ensuring the quality of continuous casting roller welding repair. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the conductive structure of the continuous casting roller cladding carbon brush provided in the embodiment of the utility model. Figure 1 ;
[0020] Figure 2 This is a schematic diagram of the conductive structure of the continuous casting roller cladding carbon brush provided in the embodiment of the utility model. Figure 2 ;
[0021] Figure 3 It is a structural schematic diagram of a carbon brush unit in a conductive structure of a carbon brush for surfacing welding of a continuous casting roller provided in an embodiment of the utility model;
[0022] Figure 4 The utility model is a schematic diagram of the installation of the continuous casting roller cladding carbon brush conductive structure provided in the embodiment of the utility model on the main shaft box of the continuous casting roller cladding machine tool.
[0023] In the attached figure:
[0024] 1. Carbon brush bracket; 11. Perforation; 12. Mounting plate; 13. Support foot;
[0025] 2. Carbon brush unit; 21. Carbon brush block; 22. Carbon brush fixing seat; 23. Limit block; 24. Spring; 25. Mounting slot; 26. Limit frame; 27. Through hole; 28. Flanging; 29. Convex edge;
[0026] 3. Conductive copper plate;
[0027] 4. Spindle box;
[0028] 5. Slewing bearing;
[0029] 6. Chuck. DETAILED DESCRIPTION
[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.
[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0033] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0034] See also Figures 1 to 4 As shown, this preferred embodiment provides a continuous casting roller cladding carbon brush conductive structure, including a carbon brush holder 1, a carbon brush unit 2 and a conductive copper plate 3, wherein:
[0035] The carbon brush holder 1 is installed on the main spindle box 4 of the continuous casting roller surfacing machine and is located between the slewing bearing 5 and the chuck 6 of the main spindle box 4. The carbon brush holder 1 is provided with a through hole 11 for allowing the main spindle of the main spindle box 4 to pass through.
[0036] A plurality of carbon brush units 2 are evenly distributed and installed on the carbon brush bracket 1 around the circumference of the through hole 11, and each carbon brush unit 2 includes a carbon brush block 21, and the carbon brush block 21 is in sliding contact with the main shaft;
[0037] The conductive copper plate 3 is electrically connected to the lead of each carbon brush block 21 , and the conductive copper plate 3 is electrically connected to the negative electrode of the electric welder.
[0038] It should be noted that the workpiece (i.e., the continuous casting roller) is clamped by the chuck 6 of the spindle box 4 and driven to rotate by the spindle, so the workpiece is conductive with the chuck 6, the spindle, the slewing bearing 5, etc., but some parts on the spindle box 4 cannot accept electrical conduction, such as the bearing body in the slewing bearing 5. The current passing through the bearing body can easily burn it out. Therefore, it is necessary to ensure reliable electrical conduction with the workpiece and not damage the parts on the spindle box 4. It is better to set the conductive position on the spindle and between the slewing bearing 5 and the chuck 6.
[0039] Therefore, the installation position of the carbon brush is moved from the workpiece to the main shaft that drives the workpiece to rotate, and the carbon brush structure is optimized so that the carbon brush block 21 maintains full contact with the main shaft, and is indirectly electrically connected to the workpiece through the chuck 6 that clamps the workpiece on the main shaft, thereby ensuring reliable conduction of the welding circuit, allowing the surfacing to proceed normally, and ensuring the quality of the continuous casting roller welding repair.
[0040] Specifically, the carbon brush unit 2 also includes a carbon brush fixing seat 22, which is fixed on the carbon brush bracket 1. A limit block 23 is provided on the carbon brush fixing seat 22 and at the end of the carbon brush block 21 facing away from the main shaft. A spring 24 is provided between the carbon brush block 21 and the limit block 23. The spring 24 is used to press the carbon brush block 21 so that the carbon brush block 21 maintains contact with the main shaft. Since the surface roughness of the main shaft is small and the roundness is high, each carbon brush block 21 can ensure reliable contact with the main shaft circumference, and as the main shaft rotates and wears the carbon brush block 21, the spring 24 can gradually press the carbon brush block 21 to feed, further ensuring the conductive effect of the carbon brush block 21 and the workpiece.
[0041] Furthermore, a plurality of mounting slots 25 are provided on the carbon brush fixing seat 22 along the direction of the carbon brush block 21 toward the main axis, and the limit block 23 is installed in any mounting slot 25, so that the pressing force of the spring 24 on the carbon brush block 21 can be adjusted, so as to adjust the force of the spring 24 according to the wear of the carbon brush block 21 and make full use of the carbon brush block 21.
[0042] In particular, a limiting frame 26 is provided on the carbon brush fixing seat 22, and the carbon brush block 21 passes through the limiting frame 26, so that the carbon brush block 21 moves accurately and stably during the feeding process relative to the main shaft, thereby ensuring the conductive effect.
[0043] In particular, the conductive copper plate 3 is arc-shaped or circular and is distributed on the outer circle of each carbon brush unit 2. A through hole 27 is opened on each limit block 23. The lead of each carbon brush block 21 passes through the corresponding through hole 27 and is wound around the conductive copper plate 3, so that the overall structure is neat and simple, and the wiring of each lead is orderly.
[0044] Furthermore, a flange 28 for forming an outer limit for the spring 24 is provided on the surface of the limit block 23 facing the carbon brush block 21, and a convex edge 29 for forming an inner limit for the spring 24 extends from the opening of the through hole 27 to ensure that the spring 24 is accurately positioned.
[0045] The conductive copper plate 3 is fixed by the lead wires of each carbon brush block 21 and is suspended in the air. The lead wires are not shown in the figure, so that the conductive copper plate 3 does not contact the carbon brush bracket 1 to avoid affecting the welding circuit.
[0046] Specifically, the carbon brush holder 1 includes a mounting plate 12 located between the slewing bearing 5 and the chuck 6 , a plurality of legs 13 fixed to the outer shell of the spindle box 4 extend from the outer edge of the mounting plate 12 , and the carbon brush unit 2 is mounted on the surface of the mounting plate 12 facing the slewing bearing 5 .
[0047] Furthermore, in order to facilitate the installation of the mounting plate 12 and the main shaft, the mounting plate 12 is designed as a split structure, and the split mounting plate 12 is combined into one body around the main shaft; similarly, the conductive copper plate 3 can also be designed as a split structure.
[0048] It is also worth mentioning that, with the structure of the annularly distributed carbon brush units 2, when there are multiple welding guns, some of the carbon brush units 2 can be selected to be connected to a corresponding welding gun, thereby reducing the wiring difficulty and ensuring the normal use of each welding gun.
[0049] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.
Claims
1. The conductive structure of continuous casting roller surfacing carbon brush is characterized by: include: A carbon brush holder (1) is mounted on a spindle box (4) of a continuous casting roller cladding machine and is located between a slewing bearing (5) and a chuck (6) of the spindle box (4); the carbon brush holder (1) is provided with a through hole (11) for allowing a spindle of the spindle box (4) to pass through; A carbon brush unit (2), wherein a plurality of the carbon brush units (2) are evenly distributed and mounted on the carbon brush bracket (1) around the circumference of the through hole (11), each of the carbon brush units (2) comprising a carbon brush block (21), and the carbon brush block (21) is in sliding contact with the main shaft; A conductive copper plate (3), wherein the conductive copper plate (3) is electrically connected to the lead of each carbon brush block (21), and the conductive copper plate (3) is electrically connected to the negative pole of the electric welding machine.
2. The conductive structure of continuous casting roller surfacing carbon brush according to claim 1, characterized in that: The carbon brush unit (2) further comprises a carbon brush fixing seat (22), wherein the carbon brush fixing seat (22) is fixed on the carbon brush bracket (1), and a limit block (23) is arranged on the carbon brush fixing seat (22) and located at an end of the carbon brush block (21) facing away from the main shaft, and a spring (24) is arranged between the carbon brush block (21) and the limit block (23), and the spring (24) is used to press the carbon brush block (21) so that the carbon brush block (21) maintains contact with the main shaft.
3. The conductive structure of continuous casting roller surfacing carbon brush according to claim 2, characterized in that: The carbon brush fixing seat (22) is provided with a plurality of installation slots (25) along the direction of the carbon brush block (21) toward the main axis, and the limit block (23) is installed in any of the installation slots (25), so that the pressing force of the spring (24) on the carbon brush block (21) can be adjusted.
4. The conductive structure of continuous casting roller surfacing carbon brush according to claim 2, characterized in that: A limiting frame (26) is provided on the carbon brush fixing seat (22), and the carbon brush block (21) passes through the limiting frame (26).
5. The conductive structure of continuous casting roller surfacing carbon brush according to claim 2, characterized in that: The conductive copper plate (3) is arc-shaped or circular and is distributed on the outer ring of each carbon brush unit (2). A through hole (27) is provided on each limit block (23). The lead wire of each carbon brush block (21) passes through the corresponding through hole (27) and is wound around the conductive copper plate (3).
6. The conductive structure of continuous casting roller surfacing carbon brush according to claim 5, characterized in that: A flange (28) for forming an external limit for the spring (24) is arranged on the surface of the limit block (23) facing the carbon brush block (21), and a convex edge (29) for forming an internal limit for the spring (24) extends from the opening of the through hole (27).
7. The conductive structure of continuous casting roller surfacing carbon brush according to claim 1, characterized in that: The conductive copper plate (3) is fixed by winding the lead wires of each carbon brush block (21) and is suspended in the air, so that the conductive copper plate (3) does not contact the carbon brush bracket (1).
8. The conductive structure of continuous casting roller surfacing carbon brush according to claim 1, characterized in that: The carbon brush holder (1) comprises a mounting plate (12) located between the slewing bearing (5) and the chuck (6); a plurality of legs (13) fixed to the outer shell of the spindle box (4) extend from the outer edge of the mounting plate (12); and the carbon brush unit (2) is mounted on the surface of the mounting plate (12) facing the slewing bearing (5).