A refractory cast busbar

Abstract

The present invention discloses a refractory cast busbar, which belongs to the technical field of electric power facilities. Its structure includes an epoxy resin insulator, a busbar, a mounting frame, an adjustment box, a telescopic shield and a flexible docking sleeve. A contact head is rotatably connected at the position corresponding to the busbar inside the adjustment box. Five rotating columns are rotatably connected at the bottom of the adjustment box. Each rotating column is provided with a worm section. A worm gear is fixedly sleeved on the outside of the insulating support. Brush plates are slidably matched between the insulating support and the two conductive side rows. The refractory cast busbar of the present invention can adjust the angle and length of each wiring copper plate according to different construction needs and can simultaneously complete the separate insulation isolation of the busbar connection end. There is no need to cast the wiring end for the second time, which greatly improves the installation efficiency of the two wiring copper plates of the cast busbar, so that the cast busbar can be flexibly and multi-angle arranged and installed under complex working conditions, which is convenient for the inspection and maintenance of the staff.

Description

Technical Field

[0001] The invention relates to the technical field of electric power facilities, in particular to a refractory cast busbar. Background Art

[0002] Cast busbars have high insulation performance, protection level up to IP68, and can be fireproof and explosion-proof. They are increasingly used in important industrial fields in my country. Existing cast busbars are basically integrated cast bodies with simple structures, which will cause many inconveniences during installation and use, and have the following defects:

[0003] 1. The existing cast busbar has a fixed size. During the installation process, the angle of the busbar power terminal needs to be adjusted according to the specific line direction. However, the existing busbar terminal is not adjustable and can only be connected in a straight line or at a 90-degree bend. This makes the connection trend of the cast busbar single and cannot be flexibly installed according to actual working conditions.

[0004] 2. At present, after the connection ends of the two cast busbars are connected, in order to achieve insulation protection, the connection needs to be re-cast and fixed. The connection of the busbar is the area with the highest probability of failure and is prone to sintering damage. However, due to the secondary casting and sealing, it is difficult to inspect and maintain. The only option is to dismantle and replace the broken cast busbar, which wastes a lot of manpower and material resources and has low maintenance efficiency.

[0005] 3. The connection end of the existing cast busbar does not have the function of length adjustment. In the actual installation project, there will inevitably be a distance error between the busbar connection end and the connected end. At this time, an external copper busbar is required to extend the length of the terminal, and at the same time, the insulation protection of the external copper busbar needs to be done well, which increases the construction cost and reduces the construction efficiency. Summary of the invention

[0006] In order to solve the deficiencies in the above-mentioned prior art, the object of the present invention is to provide a refractory cast busbar, which can individually adjust the angle and length of each wiring copper plate according to different construction needs and can simultaneously complete the separate insulation isolation of the busbar connection end, without the need for secondary casting of the wiring end, greatly improving the installation efficiency of the two wiring copper plates of the cast busbar, so that the cast busbar can be flexibly and multi-angle arranged and installed under complex working conditions, which is convenient for the inspection and maintenance of the staff.

[0007] The technical solution adopted by the present invention to solve the technical problem is:

[0008] Provided is a refractory cast busbar, comprising an epoxy resin insulator, wherein five busbars are arranged in the epoxy resin insulator, both ends of the epoxy resin insulator are fixedly sleeved with a mounting frame, an adjustment box is fixed on one side of the mounting frame, a contact head is rotatably connected at a position corresponding to the busbar inside the adjustment box, one end of the contact head is abutted and fixed with one end of the busbar, five rotating columns are rotatably connected to the bottom of the adjustment box, each of the rotating columns is provided with a worm section, two conductive side rows are fixed to the other end of the contact head, an insulating support is fixed between the two conductive side rows, a worm wheel is fixedly sleeved on the outer side of the insulating support, and the worm wheel is meshedly connected with the worm segment;

[0009] A rotating plate is fixedly sleeved on the outside of the insulating support, and the rotating plate is embedded in one side of the regulating box and is rotatably connected to the regulating box. Brush plates are slidably matched between the insulating support and the two conductive side rows, and one end of the two brush plates is fixed with a fixed joint, and a fixed sleeve is fixedly sleeved on the outside of the fixed joint, and one end of the fixed joint is rotatably connected to a wiring copper plate;

[0010] An extension plate and a guide rod are rotatably sleeved on the outer side of one end of the fixed sleeve, a flexible docking sleeve is fixed to one end of the extension plate, a buckle ring plate is fixed to one end of the flexible docking sleeve, one end of the guide rod slides through the top of the adjustment box, and a telescopic shield is fixed between one end of the fixed sleeve and the rotating plate.

[0011] Furthermore, a truncated cone joint is fixed at one end of the busbar, a docking groove is formed at one end of the contact joint, and the truncated cone joint abuts against the inner side of the docking groove.

[0012] Furthermore, mounting plates are fixed on both sides of the mounting frame and the regulating box, a first bolt column is provided between two adjacent mounting plates, and a sealing gasket is fixed on one end of the mounting frame and the regulating box.

[0013] Furthermore, the contact head and the rotating column are vertically arranged, one end of the rotating column passes through the adjustment box and is fixed with a screw plate, and one end of the screw plate is provided with a hexagonal countersunk hole.

[0014] Furthermore, a top cover is fixed on the top of the regulating box, an end plate is fixed on one end of the regulating box, and the rotating plate passes through the end plate and is rotatably connected to the end plate.

[0015] Furthermore, a plurality of paving grooves are provided on one side of the top cover, and a plurality of slide grooves connected to the paving grooves are provided on the top of the top cover. One end of the guide rod is slidably fitted in the inner side of the paving groove. A third bolt column is fixed on one end of the upper surface of the guide rod. The top end of the third bolt column passes through the slide groove and is adapted to be equipped with a fastening threaded cylinder.

[0016] Furthermore, a knob is fixedly sleeved on the top of the fastening threaded tube, and an anti-slip pad is fixed on the bottom end of the fastening threaded tube.

[0017] Furthermore, a ring groove is formed on the peripheral side surface of one end of the fixed sleeve, a ring sleeve is fixed to one end of the guide rod, the ring sleeve is rotatably connected to the inner side of the ring groove, and the extension plate and the guide rod are fixedly connected via a bracket.

[0018] Furthermore, an insulating outer frame is fixedly sleeved on the outer side of the brush plate, a track groove is provided between the insulating support and the conductive side row, the brush plate is slidably fitted in the track groove, and one side of the brush plate is in sliding contact with one side of the conductive side row.

[0019] Furthermore, two side grooves are provided on the circumferential side surface of one side of the fixed sleeve, and the top and bottom of one end of the fixed sleeve are threadedly adapted to be equipped with a second bolt column, and an extrusion plate for extruding the hinged end of the fixed joint is fixed on one end of the second bolt column entering the inner side of the fixed sleeve, and the rotating column, worm gear, rotating plate, fixed sleeve, telescopic shield, flexible docking sleeve, buckle ring plate and extrusion plate are all made of insulating material.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The refractory cast busbar of the example of the present invention combines an epoxy resin insulator with a regulating box to design a method that can individually adjust the angle and length of each wiring copper plate according to different construction needs and can simultaneously complete the individual insulation isolation of the busbar connection end. There is no need to cast the wiring end for the second time, which greatly improves the installation efficiency of the two wiring copper plates of the cast busbar, so that the cast busbar can be flexibly and multi-angle arranged and installed under complex working conditions, and can be disassembled and repaired, which is convenient for the staff to inspect and maintain.

[0022] 2. The refractory cast busbar of the example of the present invention can control the synchronous rotation of the contact joint, the conductive side row, the brush plate, the telescopic cover, the fixed joint and the fixed sleeve by rotating different rotating columns so that the worm section on the rotating column is meshed with the worm wheel, so that the wiring copper plate can be rotated 360 degrees to a specific angle. Combined with the rotational connection between the wiring copper plate and the fixed joint, the wiring copper plate can be adjusted to any angle in a hemispherical space. When the mounting frame is in close contact with the regulating box, the truncated cone joint on the busbar extends into the docking groove, and the busbar is in close contact with the contact joint through the extrusion force, and the friction force is increased to ensure stable power transmission. At this time, the conductive side row and the insulating support cannot rotate, thereby realizing multi-angle wiring of the wiring copper plate.

[0023] 3. The refractory cast busbar of the example of the present invention has a slide rail type power transmission connection between the brush plate and the conductive side row, so that the side surface of the conductive side row fits with the side surface of the brush plate and can slide, thereby realizing the extension and retraction of the fixed sleeve and changing the wiring spacing. The design of the insulating support and the insulating outer frame can avoid arcing between the two conductive side rows and the two brush plates during power transmission, thereby ensuring the stability of power transmission. The guide rod can be fixed in the give way groove by screwing and tightening the threaded barrel to prevent the free extension and retraction of the brush plate, thereby realizing the adjustment of the wiring length of the wiring copper plate.

[0024] 4. The refractory cast busbar of the example of the present invention, when two refractory cast busbars are fixedly connected end to end, the two wiring copper plates are firmly fixed together by the wire fixing plate. At this time, the flexible butt sleeves on the outside of the two fixed sleeves are folded to one side, so that the buckle ring plates at the ends of the two flexible butt sleeves are fixedly connected to each other, so that the connection between the two wiring copper plates can be quickly covered, and there is no need for secondary casting of the wiring terminals. The extension plate, flexible butt sleeve and buckle ring plate are all made of insulating materials, which play a role in dustproof and insulating the connection. The operation is simple and convenient for later disassembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of the installation frame and the adjustment box of the present invention when they are disassembled;

[0028] Figure 3 It is a schematic diagram of the internal structure of the regulating box of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the adjustment box of the present invention from another angle;

[0030] Figure 5 It is a schematic diagram of the structure when the contact head of the present invention is connected to two conductive side rows;

[0031] Figure 6 It is a schematic diagram of the internal structure of the telescopic shield and the flexible docking sleeve of the present invention after being cross-sectioned;

[0032] Figure 7 It is a schematic diagram of the structure of two wiring copper plates after being butted and fixed in the present invention;

[0033] Figure 8 It is a schematic diagram of the internal structure of the fixed sleeve of the present invention after being cut horizontally;

[0034] Fig. 9It is a structural schematic diagram of the brush plate of the present invention;

[0035] Fig.10 It is a structural schematic diagram of the guide rod of the present invention;

[0036] Fig.11 It is a schematic diagram of the structure when the guide rod and the fixed sleeve of the present invention are separated;

[0037] Fig.12 It is a butt joint form of the wiring copper plate of the present invention;

[0038] Fig.13 It is another butt joint form of the wiring copper plate of the present invention.

[0039] In the figure, 1. epoxy resin insulator, 2. mounting frame, 3. regulating box, 4. top cover, 5. end plate, 6. busbar, 7. truncated cone joint, 8. mounting plate, 9. first bolt column, 10. rotating column, 11. contact head, 12. worm gear, 13. rotating plate, 14. worm segment, 15. docking groove, 16. giving way groove, 17. slide groove, 18. screw plate, 19. conductive side row, 20. insulating support, 21 .Track groove, 22. Brush plate, 23. Fixed joint, 24. Fixed sleeve, 25. Wiring copper plate, 26. Guide rod, 27. Telescopic cover, 28. Extension plate, 29. Flexible docking sleeve, 30. Snap-on ring plate, 31. Side groove, 32. Ring groove, 33. Ring sleeve, 34. Second bolt column, 35. Extrusion plate, 36. Third bolt column, 37. Fastening threaded barrel, 38. Anti-slip pad, 39. Insulating outer frame. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0041] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0042] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings.

[0046] Example: Reference Figure 1-13 A refractory cast busbar shown in the figure comprises an epoxy resin insulator 1, five busbars 6 are arranged in the epoxy resin insulator 1, both ends of the epoxy resin insulator 1 are fixedly sleeved with a mounting frame 2, an adjusting box 3 is fixed on one side of the mounting frame 2, a contact head 11 is rotatably connected at a position corresponding to the busbar 6 inside the adjusting box 3, one end of the contact head 11 is fixedly abutted against one end of the busbar 6, five rotating columns 10 are rotatably connected to the bottom of the adjusting box 3, each rotating column 10 is provided with a worm segment 14, two conductive side rows 19 are fixed to the other end of the contact head 11, an insulating support 20 is fixed between the two conductive side rows 19, a worm wheel 12 is fixedly sleeved on the outer side of the insulating support 20, and the worm wheel 12 is meshedly connected with the worm segment 14;

[0047] The outer side of the insulating support 20 is fixedly sleeved with a rotating plate 13, the rotating plate 13 is embedded in one side of the regulating box 3 and is rotatably connected to the regulating box 3, and brush plates 22 are slidably matched between the insulating support 20 and the two conductive side rows 19, and one end of the two brush plates 22 is fixed with a fixed joint 23, and the outer side of the fixed joint 23 is fixedly sleeved with a fixed sleeve 24, and one end of the fixed joint 23 is rotatably connected with a wiring copper plate 25;

[0048] An extension plate 28 and a guide rod 26 are rotatably sleeved on the outer side of one end of the fixed sleeve 24, a flexible docking sleeve 29 is fixed to one end of the extension plate 28, a buckle ring plate 30 is fixed to one end of the flexible docking sleeve 29, one end of the guide rod 26 slides through the top of the adjustment box 3, and a telescopic protective cover 27 is fixed between one end of the fixed sleeve 24 and the rotating plate 13.

[0049] An insulating outer frame 39 is fixedly sleeved on the outer side of the brush plate 22, and a track groove 21 is provided between the insulating support 20 and the conductive side row 19. The brush plate 22 is slidably fitted in the track groove 21, and one side of the brush plate 22 is in sliding contact with one side of the conductive side row 19. The design of the insulating support 20 and the insulating outer frame 39 can avoid arcing between the two conductive side rows 19 and the two brush plates 22 during power transmission, thereby ensuring the stability of power transmission.

[0050] When the refractory cast busbar is used, five busbars 6 are cast inside the epoxy resin insulator 1 through a mold, and the two ends of the epoxy resin insulator 1 are fixedly sleeved with a mounting frame 2, and the adjusting box 3 can be fixed to the end of the epoxy resin insulator 1 through the mounting frame 2. When the mounting frame 2 and the adjusting box 3 are docked and fixed, the five busbars 6 and the five contact heads 11 are exactly corresponding to each other and contacted and fixed. Therefore, at the beginning of installation, the mounting frame 2 and the adjusting box 3 can be pre-fixed, and the mounting frame 2 and the adjusting box 3 should not be tightly connected, so that the contact head 11 and the docking end of the busbar 6 can rotate relative to each other, and by rotating different rotating columns 10, the worm segment 14 on the rotating column 10 can drive the worm wheel 12 to rotate, thereby being able to control the rotation angle of different wiring copper plates 25 respectively. It should be noted that, if Figure 3 and 4 As shown, the position of the worm section 14 on each rotating column 10 is inconsistent, so the position of each worm wheel 12 is also inconsistent. When the conductive side row 19 rotates, the contact head 11, the rotating plate 13, the brush plate 22, the fixed sleeve 24, the telescopic cover 27 and the wiring copper plate 25 will rotate synchronously, so that the wiring copper plate 25 can rotate 360° at different angles. In addition, the rotating connection between the wiring copper plate 25 and the fixed joint 23 can make the wiring copper plate 25 adjust to any angle in a hemispherical space, completing the wiring operation of the wiring copper plate 25 at different angles;

[0051] The brush plate 22 and the conductive side row 19 are connected by a slide rail type power transmission connection. The side of the conductive side row 19 fits with the side of the brush plate 22 and can slide, thereby realizing the telescopic movement of the fixed sleeve 24. The wiring spacing can be changed according to actual needs. The sliding cooperation between the guide rod 26 and the adjustment box 3 can make the fixed sleeve 24 move along a straight line to a suitable range. By fixing the guide rod 26 on the top of the adjustment box 3, the position of the fixed sleeve 24 can be fixed to avoid the random sliding of the fixed sleeve 24. The telescopic cover 27 can be freely telescopic. When the two wiring copper plates 25 are docked and fixed, as shown in FIG. Figure 7As shown in the figure, the two wiring copper plates 25 are firmly fixed together by the wire fixing plate. At this time, the flexible docking sleeves 29 on the outside of the two fixed sleeves 24 are folded to one side, so that the buckle ring plates 30 at the ends of the two flexible docking sleeves 29 are buckled and fixed to each other, so that the connection between the two wiring copper plates 25 can be quickly covered. The extension plate 28, the flexible docking sleeve 29 and the buckle ring plate 30 are all made of insulating material, which has dust-proof and insulating effects. It should be noted that the two buckle ring plates 30 can be fixedly connected by snaps, or by fasteners, such as screws, so that the two buckle ring plates 30 are detachably fixedly connected, which is convenient for later disassembly and maintenance operations.

[0052] In order to increase the contact area between the end face of the busbar 6 and the end face of the contact head 11 and improve the stability of power transmission, in this embodiment, a truncated cone joint 7 is fixed to one end of the busbar 6, and a docking groove 15 is opened at one end of the contact head 11. The truncated cone joint 7 abuts against the inner side of the docking groove 15, which can increase the contact area between the busbar 6 and the contact head 11.

[0053] In order to make the mounting frame 2 and the regulating box 3 more firmly fixed, in the present embodiment, mounting plates 8 are fixed on both sides of the mounting frame 2 and the regulating box 3, a first bolt column 9 is provided between two adjacent mounting plates 8, sealing gaskets are fixed on one end of the mounting frame 2 and the regulating box 3, one end of the first bolt column 9 passes through the mounting plates 8 on the regulating box 3 and the mounting frame 2 respectively and is fitted with a nut, and the two mounting plates 8 can be brought close to each other by tightening the nut, so that the mounting frame 2 and the regulating box 3 are in close contact and fixed, and after the mounting frame 2 and the regulating box 3 are tightly fixed, the busbar 6 and the contact head 11 are in close contact, the friction force is increased, and the insulating support 20 cannot rotate at this time, thereby ensuring stable power transmission.

[0054] In order to facilitate the rotation of the rotating column 10, in this embodiment, the contact head 11 and the rotating column 10 are vertically arranged, one end of the rotating column 10 passes through the adjustment box 3 and is fixed with a screw plate 18, and one end of the screw plate 18 is provided with a hexagonal countersunk hole. The design of the hexagonal countersunk hole facilitates the screwing of the screwing plate 18, and the rotating column 10 is driven to rotate stably by screwing the screwing plate 18.

[0055] In order to facilitate the production and assembly of various internal structures of the regulating box 3, in this embodiment, a top cover 4 is fixed on the top of the regulating box 3, an end plate 5 is fixed at one end of the regulating box 3, and a rotating plate 13 passes through the end plate 5 and is rotatably connected to the end plate 5, so as to facilitate modular processing and production of the regulating box 3 during production.

[0056] The top of the top cover 4 is provided with a plurality of sliding grooves 17 connected with the recessed grooves 16, and the top of the top cover 4 is provided with a plurality of sliding grooves 17 connected with the recessed grooves 16. One end of the guide rod 26 is slidably fitted in the inner side of the recessed groove 16, and a third bolt column 36 is fixed to one end of the upper surface of the guide rod 26. The top end of the third bolt column 36 passes through the sliding groove 17 and is adapted to be equipped with a fastening threaded tube 37. A knob is fixedly sleeved on the top of the fastening threaded tube 37, and an anti-skid pad 38 is fixed to the bottom end of the fastening threaded tube 37. The sliding fit between the guide rod 26 and the recessed groove 16 can make the fixing sleeve 24 move laterally in a straight line stably. By screwing the knob on the top of the fastening threaded tube 37, the fastening threaded tube 37 is vertically moved downward, and the anti-skid pad 38 will squeeze the top of the top cover 4, thereby fixing the guide rod 26 in the recessed groove 16, thereby realizing a fixed connection between the guide rod 26 and the top cover 4.

[0057] In order to ensure a stable rotational connection between the guide rod 26 and the extension plate 28 and the fixed sleeve 24, in the present embodiment, an annular groove 32 is provided on the peripheral side surface of one end of the fixed sleeve 24, and an annular sleeve 33 is fixed to one end of the guide rod 26. The annular sleeve 33 is rotatably connected to the inner side of the annular groove 32. The extension plate 28 and the guide rod 26 are fixedly connected by a bracket. The bracket can fix the extension plate 28 and the guide rod 26 together, thereby improving the stability of the structure of the extension plate 28.

[0058] In order to control the rotational connection between the fixed joint 23 and the wiring copper plate 25, in this embodiment, two side grooves 31 are opened on the circumferential side surface of one side of the fixed sleeve 24, and the top and bottom of one end of the fixed sleeve 24 are threadedly adapted with a second bolt column 34, and the second bolt column 34 is fixed with an extrusion plate 35 for extruding the hinged end of the fixed joint 23 at one end of the inner side of the fixed sleeve 24. The rotating column 10, worm gear 12, rotating plate 13, fixed sleeve 24, telescopic cover 27, flexible docking sleeve 29, buckle ring plate 30 and extrusion plate 35 are all made of insulating material. The setting of the side groove 31 allows the wiring copper plate 25 to rotate 90 degrees to both sides respectively. By screwing the second bolt column 34, the extrusion plate 35 at the end of the second bolt column 34 can be moved closer to the side of the fixed joint 23, and the hinged end of the fixed joint 23 can be squeezed from both sides, so that one end of the wiring copper plate 25 is tightly fixed to one end of the fixed joint 23, thereby avoiding rotation of the connection between the wiring copper plate 25 and the fixed joint 23.

[0059] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

[0060] Except for the technical features described in the specification, the remaining technical features are known technologies to those skilled in the art. In order to highlight the innovative features of the present invention, the remaining technical features will not be described here in detail.

Claims

1. A refractory cast busbar, comprising an epoxy resin insulator (1), wherein five busbars (6) are arranged in the epoxy resin insulator (1), characterized in that: Both ends of the epoxy resin insulator (1) are fixedly sleeved with a mounting frame (2), one side of the mounting frame (2) is fixed with an adjustment box (3), a contact head (11) is rotatably connected at a position corresponding to the busbar (6) inside the adjustment box (3), one end of the contact head (11) is fixedly abutted with one end of the busbar (6), five rotating columns (10) are rotatably connected to the bottom of the adjustment box (3), each of the rotating columns (10) is provided with a worm segment (14), two conductive side rows (19) are fixed to the other end of the contact head (11), an insulating support member (20) is fixedly sleeved between the two conductive side rows (19), a worm wheel (12) is fixedly sleeved on the outside of the insulating support member (20), and the worm wheel (12) is meshingly connected with the worm segment (14); A rotating plate (13) is fixedly sleeved on the outer side of the insulating support member (20), the rotating plate (13) is embedded in one side of the regulating box (3) and is rotatably connected to the regulating box (3), a brush plate (22) is slidably matched between the insulating support member (20) and the two conductive side rows (19), one end of each of the two brush plates (22) is fixed with a fixed joint (23), the outer side of the fixed joint (23) is fixedly sleeved with a fixed sleeve (24), and one end of the fixed joint (23) is rotatably connected to a wiring copper plate (25); An extension plate (28) and a guide rod (26) are rotatably sleeved on the outer side of one end of the fixed sleeve (24); a flexible docking sleeve (29) is fixed to one end of the extension plate (28); a buckle ring plate (30) is fixed to one end of the flexible docking sleeve (29); one end of the guide rod (26) slides through the top of the adjustment box (3); and a telescopic shield (27) is fixed between one end of the fixed sleeve (24) and the rotating plate (13).

2. The refractory cast busbar according to claim 1, characterized in that: A truncated cone joint (7) is fixed to one end of the busbar (6), a butt joint groove (15) is provided at one end of the contact joint (11), and the truncated cone joint (7) abuts against the inner side of the butt joint groove (15).

3. The refractory cast busbar according to claim 2, characterized in that: Mounting plates (8) are fixed on both sides of the mounting frame (2) and the regulating box (3), a first bolt column (9) is provided between two adjacent mounting plates (8), and a sealing gasket is fixed on one end of the mounting frame (2) and the regulating box (3).

4. The refractory cast busbar according to claim 3, characterized in that: The contact head (11) and the rotating column (10) are arranged vertically, one end of the rotating column (10) passes through the adjustment box (3) and is fixed with a screw plate (18), and one end of the screw plate (18) is provided with a hexagonal countersunk hole.

5. The refractory cast busbar according to claim 4, characterized in that: A top cover (4) is fixed to the top of the regulating box (3), an end plate (5) is fixed to one end of the regulating box (3), and the rotating plate (13) penetrates the end plate (5) and is rotatably connected to the end plate (5).

6. The refractory cast busbar according to claim 5, characterized in that: A plurality of clearance grooves (16) are provided on one side of the top cover (4), and a plurality of slide grooves (17) connected to the clearance grooves (16) are provided on the top of the top cover (4). One end of the guide rod (26) is slidably fitted inside the clearance groove (16), and a third bolt column (36) is fixed to one end of the upper surface of the guide rod (26). The top end of the third bolt column (36) passes through the slide groove (17) and is adapted to be equipped with a fastening threaded cylinder (37).

7. The refractory cast busbar according to claim 6, characterized in that: A knob is fixedly sleeved on the top of the fastening threaded cylinder (37), and an anti-slip pad (38) is fixed on the bottom end of the fastening threaded cylinder (37).

8. The refractory cast busbar according to claim 1, characterized in that: An annular groove (32) is formed on the circumferential side surface of one end of the fixed sleeve (24), an annular sleeve (33) is fixed to one end of the guide rod (26), the annular sleeve (33) is rotatably connected to the inner side of the annular groove (32), and the extension plate (28) and the guide rod (26) are fixedly connected via a bracket.

9. The refractory cast busbar according to claim 1, characterized in that: An insulating outer frame (39) is fixedly sleeved on the outer side of the brush plate (22), a track groove (21) is provided between the insulating support member (20) and the conductive side row (19), the brush plate (22) is slidably fitted in the track groove (21), and one side of the brush plate (22) is in sliding contact with one side of the conductive side row (19).

10. The refractory cast busbar according to claim 1, characterized in that: The fixed sleeve (24) is provided with grooves (31) on both sides of its side surface, and the top and bottom of one end of the fixed sleeve (24) are threadedly adapted to be fitted with a second bolt column (34), and an end of the second bolt column (34) that enters the inner side of the fixed sleeve (24) is fixed with an extrusion plate (35) for extruding the hinged end of the fixed joint (23), and the rotating column (10), the worm gear (12), the rotating plate (13), the fixed sleeve (24), the telescopic shield (27), the flexible docking sleeve (29), the buckle ring plate (30) and the extrusion plate (35) are all made of insulating material.

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