Busbar positioning structure and power transmission device

Abstract

The application provides a busbar positioning structure and a power transmission device, and relates to the field of power transmission vehicles. The busbar positioning structure comprises a busbar, a first clamping portion is arranged at the bottom of the busbar; a support frame is arranged to support the busbar; and a conductive column is arranged, a second clamping portion is arranged at the top of the conductive column, the first clamping portion and the second clamping portion are matched, and the conductive column is arranged to support the busbar. The structure realizes accurate positioning of the busbar through matching, enhances the connection stability between the busbar and the conductive column, and reduces the resistance of the contact part of the busbar and the conductive column.

Description

Technical Field

[0001] This application relates to the field of power transmission vehicles, and more particularly to a busbar positioning structure and a power transmission device. Background Technology

[0002] In the power transmission vehicle equipment, a busbar needs to be added to transmit the electricity from the power transmission busbar to the conductive column, and then to the electrode clamp connected to the conductive column, so as to realize the power supply operation of the conductive electrode on the graphitization furnace.

[0003] The conductive posts serve to support and conduct current, while the busbar is used to centrally distribute the current transmitted by multiple conductive posts. In practical applications, defects in the connection between the two, such as uneven contact surfaces or improper fastening methods, can lead to insufficient mechanical stability of the connection, making it susceptible to loosening or displacement due to vibration, thermal stress, or external forces. Furthermore, unstable contact increases the resistance of the contact area, causing exacerbated localized heating, which not only reduces conductivity but may also lead to overheating, oxidation, or even ablation. Over long-term operation, such poor contact can cause equipment failure, affecting the safety and reliability of the power system.

[0004] In summary, optimizing the connection structure between the busbar and the conductive post, and improving its mechanical strength and conductivity at the connection point, has become a pressing technical problem to be solved in this field. Utility Model Content

[0005] To overcome the shortcomings of the prior art, this application provides a bus positioning structure, including:

[0006] The busbar has a first engaging part at the bottom;

[0007] The conductive post has a second engaging portion at its top that is adapted to the first engaging portion. The first engaging portion and the second engaging portion are engaged so that the conductive post abuts against the busbar.

[0008] Furthermore, the first engaging portion is a recessed portion that is recessed away from the direction of the conductive post, and the second engaging portion is a protrusion that extends towards the busbar direction, with the protrusion being engaged within the recessed portion.

[0009] Furthermore, a guide portion that tapers toward the groove portion is provided along the edge of the groove portion.

[0010] Furthermore, a plurality of support portions are provided along the periphery of the contact surface between the conductive post and the busbar, the support portions being used to support the busbar.

[0011] Furthermore, the support portion is a conductive metal welded sheet, which is fixed to both sides of the upper end of the conductive column by welding.

[0012] Furthermore, the first engaging portion is a protrusion extending toward the conductive post, and the second engaging portion is a recessed portion moving away from the busbar direction.

[0013] Furthermore, it also includes a limiting frame, which includes a retaining beam assembly that extends along the side edge of the busbar to form a closed frame;

[0014] A column is located below the limiting frame and is configured to support the limiting frame.

[0015] Furthermore, the limiting frame includes several hollow limiting components, which are connected end to end to form the closed frame.

[0016] Furthermore, the surrounding beam assembly is formed by welding rectangular steel or angle steel.

[0017] This application also provides a power transmission device, including the busbar positioning structure described above, and further comprising:

[0018] Electrode clips are connected to the conductive posts;

[0019] An electrode clamp is installed below the busbar and electrically connected to the busbar. The electrode clamp is configured to hold a conductive component connected to the busbar clamp, so that the electrode clamp is electrically connected to the busbar clamp.

[0020] Compared to existing technologies, the advantages of this application are as follows: By setting an interlocking structure between the first and second engaging parts to form a mechanical interlock, lateral displacement of the busbar is effectively prevented; the support frame increases the support area of ​​the busbar, providing stable longitudinal support and improving the stability of the busbar; furthermore, the interlocking structure formed by the busbar pressing it against the conductive post utilizes the busbar's own weight to create a stable pressure contact surface with the conductive post, resulting in a tighter bond between the busbar and the conductive post and maintaining low resistance at the contact point. In summary, this structure achieves precise positioning of the busbar through interlocking, enhances the connection stability between the busbar and the conductive post, and reduces the resistance at the contact point. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the busbar positioning structure is shown.

[0023] Figure 2 A schematic diagram of the support frame structure is shown;

[0024] Figure 3 A schematic diagram of a conductive post-embedded busbar is shown;

[0025] Figure 4 A schematic diagram of the tray assembly including the first support plate is shown.

[0026] Figure 5 A schematic diagram of the tray assembly including the second support plate is shown.

[0027] Figure 6 A schematic diagram showing the connection between the transfer clamp and the busbar clamp via a conductive component is shown;

[0028] Figure 7 A front view of the power transmission device is shown;

[0029] Figure 8 A schematic diagram of the electrode clamp structure is shown.

[0030] Explanation of key component symbols:

[0031] 100-Busbar; 110-First engaging part; 120-Guide part; 200-Support frame; 210-Limiting frame; 211-Beam assembly; 212-Pattern assembly; 212a-Connector; 212b-First support plate; 212c-Hollow lifting component; 212d-Second support plate; 220-Column; 300-Conductive column; 310-Second engaging part; 400-Support part; 500-Pad; 600-Electrode clamp; 610-Connecting plate; 620-Clamping arm; 630-Electrode clamp plate; 640-Driver; 700-Transfer clamp; 800-Busbar clamp; 900-Conductive component; 910-Branch aluminum plate; 920-Conductive aluminum busbar. Detailed Implementation

[0032] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0033] Example 1

[0034] Conductive posts are used to support and conduct current, while busbars are used to centrally distribute the current transmitted by multiple conductive posts. However, uneven contact surfaces or improper fastening methods between conductive posts and busbars can lead to insufficient mechanical connection stability, increase contact resistance, and reduce conductivity.

[0035] Please see Figure 1 This application provides a busbar 100 positioning structure, which aims to improve the connection stability between the busbar 100 and the conductive post 300. The busbar 100 positioning structure includes a busbar 100, a support frame 200, and a conductive post 300.

[0036] Please see Figure 3 The bottom of the busbar 100 is provided with a first engaging part 110.

[0037] Specifically, the busbar 100 is a long plate-shaped aluminum component to increase its surface flatness and facilitate tight fitting with other components. Several first engaging portions 110 are provided at intervals on the bottom surface of the busbar 100 along its length.

[0038] Please see Figure 1 The support frame 200 abuts against the bottom surface of the busbar 100 and is configured to support the busbar 100.

[0039] Understandably, since the support frame 200 abuts against the bottom surface of the busbar 100, it generates an upward longitudinal support force on the busbar 100, thereby increasing the support area of ​​the busbar 100 and improving the stability of the busbar 100.

[0040] Please see Figure 3 The top of the conductive post 300 is provided with a second engaging part 310 that is adapted to the first engaging part 110. The first engaging part 110 and the second engaging part 310 are engaged so that the conductive post 300 abuts against the busbar 100.

[0041] Specifically, the conductive post 300 is a vertically arranged column made of conductive materials such as copper or aluminum. The engagement structure between the first engaging part 110 and the second engaging part 310 may be magnetic. For example, a magnetic material is bonded to the bottom of the busbar 100 to form the first engaging part 110, and a magnetic material is also bonded to the top of the conductive post 300 to form the second engaging part 310, using magnetic force to achieve rapid adsorption and fixation. Alternatively, the first engaging part 110 may be a dovetail groove, and the second engaging part 310 may be a corresponding dovetail tenon. The dovetail groove and the dovetail tenon fit together to lock the busbar 100 and the conductive post 300.

[0042] This embodiment addresses the problem of insufficient mechanical stability of the busbar 100, leading to high resistance at its contact with the conductive post 300, through the synergistic effect of three features. Specifically, the interlocking structure between the first engaging portion 110 and the second engaging portion 310 forms a mechanical interlock, effectively preventing lateral displacement of the busbar 100; the support frame 200 increases the support area of ​​the busbar 100, providing stable longitudinal support and improving the stability of the busbar 100; the interlocking structure formed by the busbar 100 presses against the conductive post 300, utilizing the weight of the busbar 100 to form a stable pressure contact surface on the conductive post 300, making the connection between the busbar 100 and the conductive post 300 tighter and maintaining low resistance at the contact point. In summary, this structure achieves precise positioning of the busbar 100 through interlocking, enhances the connection stability between the busbar 100 and the conductive post 300, and reduces the resistance at their contact point.

[0043] Please see Figure 1 In this application, there are multiple conductive posts 300, which are quadrangular prism components of the same height and arranged perpendicular to the horizontal plane. A horizontally placed plate-shaped busbar 100 is connected to the top of the multiple conductive posts 300. The above arrangement allows the busbar 100 to be placed roughly parallel to the horizontal plane, and the busbar 100 will not tilt due to the large height difference between the multiple conductive posts 300 supporting the bottom.

[0044] In some embodiments, the first engaging portion 110 is a recessed portion that is recessed away from the conductive post 300, and the second engaging portion 310 is a protrusion that extends toward the busbar 100.

[0045] Specifically, the recessed portion refers to the square indentation at the bottom of the busbar 100, and several recessed portions are spaced apart along the length of the busbar 100 on its bottom surface. The number of recessed portions and the spacing between adjacent recessed portions are determined by the number and distribution of the conductive posts 300. The protrusion is a square protrusion located at the top of the conductive post 300.

[0046] The groove can be formed on the bottom surface of the busbar 100 by milling, stamping, or casting, and its cross-sectional shape includes, but is not limited to, rectangular, trapezoidal, or arc-shaped. The protrusion can be formed by integrally molding with the conductive post 300. It is understood that since the processing of the groove and protrusion is simpler than forming a magnetic or threaded engagement structure, this design can reduce production costs.

[0047] In some preferred embodiments, the groove can be designed as a V-shaped cross section and the protrusion as a corresponding wedge-shaped structure, thereby achieving self-centering when the two are fitted together.

[0048] In some possible embodiments, the first engaging portion 110 is a protrusion extending toward the conductive post 300, and the second engaging portion 310 is a recessed portion away from the busbar 100.

[0049] Please see Figure 3 In some embodiments, a guide portion 120 that tapers toward the groove portion is provided along the edge of the groove portion.

[0050] Specifically, the guide portion 120 is integrally formed with the groove portion, and the guide portion 120 adopts a sloped transition structure or a circular arc transition structure to achieve the shrinkage guidance function. During the fitting process of the protrusion and the groove portion, the guide portion 120 first contacts the protrusion and generates a guiding force, causing the protrusion to slide into the groove portion along a predetermined path, thereby increasing the positioning accuracy of the busbar 100.

[0051] Please see Figure 3 In some embodiments, a plurality of support portions 400 are provided along the periphery of the contact surface between the conductive post 300 and the busbar 100, and the two sides of the support portions 400 are respectively fixedly connected to the busbar 100 and the conductive post 300.

[0052] Specifically, two rows of support portions 400 are provided on opposite sides of the contact surface between the busbar 100 and the conductive post 300 to suppress relative displacement between the two on the contact surface. The support portion 400 is a conductive metal welded piece, which is fixed to both sides of the upper end of the conductive post by welding or integral molding to achieve a stable current transmission structure and strengthen the mechanical connection between the busbar 100 and the conductive post 300.

[0053] Please see Figure 1 and Figure 2 In some embodiments, the support frame 200 includes: a limiting frame 210, including a surrounding beam assembly 211 and a support plate assembly 212, wherein the surrounding beam assembly 211 extends along the side edge of the busbar 100 to form a closed frame, and the two ends of the support plate assembly 212 are connected to the opposite sides of the surrounding beam assembly 211 and abut against the bottom surface of the busbar 100; and a column 220, disposed below the limiting frame 210, configured to support the limiting frame 210.

[0054] Specifically, the surrounding beam assembly 211 can be formed by welding rectangular steel or angle steel, and its closed frame structure needs to match the side profile of the busbar 100. Therefore, the busbar 100 is preferably plate-shaped, while the surrounding beam assembly 211 is a square frame adapted to the plate-shaped busbar 100 for ease of processing. The support plate assembly 212 includes several support plates, and the two sides of the support plates are connected to the two opposing surrounding beams of the surrounding beam assembly 211 by bolts or welding. The column 220 can be made of hollow square tube or H-beam steel, with its top abutting against the surrounding beam assembly 211 and fixedly connected by bolts, and its bottom fixed to the support surface by bolts; in this embodiment, the support surface is a sliding structure on the trolley equipment, and the conductive column is set on the sliding structure. The trolley equipment drives the conductive column to move back and forth through the sliding structure. The sliding structure is a known technology and will not be described in detail here.

[0055] As a preferred embodiment, a diagonal bracing member may be added between the beam assembly 211 and the column 220 to enhance the resistance to lateral forces.

[0056] This embodiment achieves circumferential constraint on the busbar 100 by forming a closed frame structure, preventing the busbar 100 from displacing in the horizontal direction. Specifically, the beam assembly 211 restricts horizontal displacement, the support plate assembly 212 provides vertical upward support, and the column 220 bears the main load.

[0057] Please see Figure 1 and Figure 2 In some embodiments, several tray assemblies 212 are spaced apart, and the conductive post 300 passes through the gap between adjacent tray assemblies 212 to connect to the busbar 100. Specifically, several tray assemblies 212 are distributed in an equidistant array below the busbar 100. While maintaining continuous support for the busbar 100, the resulting gap structure provides an installation channel for the conductive post 300, avoiding mechanical interference between the conductive post 300 and the tray assembly 212.

[0058] In some other embodiments, the pallet assemblies 212 may also be arranged non-uniformly according to the stress requirements of the busbar 100, such as setting a number of pallet assemblies 212 with smaller spacing and larger distribution density on the heavier side of the busbar 100.

[0059] Please see Figure 4 In some embodiments, the pallet assembly 212 includes a connector 212a and a first support plate 212b. The upper surface of the first support plate 212b abuts against the busbar 100, and its opposite sides are respectively fixedly connected to the surrounding beam assembly 211 through the connector 212a. A hollow lifting member 212c is also fixedly connected to the lower surface of the first support plate 212b.

[0060] Specifically, the connector 212a consists of several stiffening plates welded to the periphery of the beam assembly 211. The stiffening plates are fixedly connected to the upper surface of the support plate by bolts or welding. The stiffening plates are used to eliminate the relative displacement between the first support plate 212b and the beam assembly 211. The hollow support member 212c is a hollow steel welded to the lower surface of the first support plate 212b. The shape of the hollow steel is adapted to the first support plate 212b, so that the hollow steel and the first support plate 212b have a large contact area. The cross-section of the hollow steel includes, but is not limited to, rectangular, trapezoidal or I-shaped. The hollow steel is used to enhance the tensile strength of the first support plate 212b, and the hollow structure of the hollow steel can reduce its weight while maintaining mechanical strength.

[0061] Several triangular ribs are also connected between the hollow lifting component 212c and the first connecting plate 610 to increase mechanical strength.

[0062] In some possible embodiments, the hollow lifting member 212c and the first support plate 212b are manufactured using an integral molding process, and the connection is provided with a transition fillet to avoid stress concentration.

[0063] Please see Figure 5 In some embodiments, the pallet assembly 212 includes a connector 212a and a second support plate 212d. The opposite sides of the second support plate 212d are respectively fixedly connected to the surrounding beam assembly 211 through the connector 212a. The busbar 100 is pressed onto the column 220 through the second support plate 212d. A plurality of pads 500 stacked along the height direction are provided between the busbar 100 and the support plate or between the support plate and the column 220.

[0064] Specifically, the connection structure between the second support plate 212d, connector 212a, and surrounding beam assembly 211 is similar to that between the first support plate 212b, connector 212a, and surrounding beam assembly 211. The difference is that the first support plate 212b has no supporting structure below it, while the second support plate 212d has a column 220 below it for support. The design of the pad 500 allows for flexible adjustment of the installation height of the busbar 100 on site by adding or removing stacked pads 500.

[0065] In some embodiments, the limiting frame 210 includes a plurality of hollow limiting members, which are connected end to end to form the closed frame. Specifically, the hollow limiting members are hollow steel, which are bolted or welded together to form a square frame; the hollow structure design can reduce the amount of material used and reduce the overall weight of the limiting frame 210.

[0066] In some preferred embodiments, longitudinal reinforcing ribs may be provided on the tube wall of the hollow limiting member to further enhance its resistance to buckling.

[0067] Example 2

[0068] Please see Figure 6 and Figure 7 This application also provides a power supply device, including the busbar 100 positioning structure in Embodiment 1, and further including an electrode clamp 600 connected to the conductive post 300; a transfer clamp 700 installed below the busbar 100 and electrically connected to the busbar 100; the transfer clamp 700 is configured to clamp a conductive component 900 connected to a busbar clamp 800, so that the electrode clamp 600 is electrically connected to the busbar clamp 800.

[0069] Multiple electrode clips 600 are spaced apart along the height of the conductive post 300. The electrode clips 600 are used to clamp the conductive electrodes.

[0070] Please see Figure 8 The electrode clamp 600 includes a clamping body and a driving member 640. The clamping body includes a connecting plate 610, clamping arms 620, and an electrode clamping plate 630. The connecting plate 610 is fixedly connected to the conductive post 300 through the mounting base. The connection between the connecting plate 610 and the mounting base can be welded or bolted. Clamping arms 620 are hinged to opposite sides of the connecting plate 610 to form a clamping opening. The two clamping arms 620 are connected to the electrode clamping plate 630 on their facing surfaces. The driving member 640 is connected to the clamping arms 620 and is configured to drive the clamping arms 620 to rotate around their hinged parts as an axis, so that the clamping opening opens and closes.

[0071] Specifically, the driving component 640 is a hydraulic cylinder, with its two ends connected to the opposite ends of two clamping arms 620. The middle of the clamping arms 620 is hinged to both ends of the connecting plate 610, forming a linkage structure. The extension and retraction of the hydraulic cylinder drives the linkage to move, thereby causing the clamping arms 620 to rotate around the hinged part with the connecting plate 610 as the axis. The opening and closing of the clamping jaws causes the two electrode clamping plates 630 to move closer or further apart, completing the clamping or releasing operation of the external graphite electrode.

[0072] The clamping structures of the transfer clamp 700 and the busbar clamp 800 are similar to those of the electrode clamp 600, so they will not be described in detail here. However, it should be noted that the aluminum busbar portion used for conduction in the transfer clamp 700 (equivalent to the electrode clamp plate 630 in the electrode clamp 600) is electrically connected to the busbar 100, and this aluminum busbar portion is also distributed at the clamping opening of the transfer clamp 700.

[0073] Please see Figure 6The conductive component 900 includes two branch aluminum plates 910 protruding towards the clamping jaws of the rotary clamps 700, and a conductive aluminum busbar 920 connected below the two branch aluminum plates 910. Each of the two rotary clamps 700 clamps one branch aluminum plate 910. A busbar clamp 800 is located below the conductive component 900 and includes a busbar clamp 800 arm that forms an electrical connection with the conductive aluminum busbar 920. The busbar clamp 800 arm can also be driven to open and close its jaws by a hydraulic cylinder and connecting rod structure.

[0074] In summary, since the transfer clamp 700 holds the branch aluminum plate 910, and the branch aluminum plate 910 is electrically connected to the arm of the busbar clamp 800 through the conductive aluminum busbar 920, a current path of busbar clamp 800 → conductive component 900 → transfer clamp 700 is achieved. Furthermore, since the aluminum busbar in the transfer clamp 700 is electrically connected to the busbar 100, and the electrode clamp 600 holds the conductive electrode, a current path of transfer clamp 700 → busbar 100 → conductive post 300 → electrode clamp 600 → conductive electrode is achieved.

[0075] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0076] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A busbar positioning structure, characterized in that, include: The busbar has a first engaging part at the bottom; The conductive post has a second engaging portion at its top that is adapted to the first engaging portion. The first engaging portion and the second engaging portion are engaged so that the conductive post abuts against the busbar.

2. The busbar positioning structure according to claim 1, characterized in that, The first engaging portion is a recessed portion that is recessed away from the direction of the conductive post, and the second engaging portion is a protruding portion that extends towards the busbar direction, and the protruding portion is engaged in the recessed portion.

3. The busbar positioning structure according to claim 2, characterized in that, The groove portion has a guide portion that tapers towards the groove portion along its edge.

4. The busbar positioning structure according to claim 1, characterized in that, A plurality of support portions are provided along the periphery of the contact surface between the conductive post and the busbar, the support portions being used to support the busbar.

5. The busbar positioning structure according to claim 4, characterized in that, The support portion is a conductive metal welded sheet, which is fixed to both sides of the upper end of the conductive column by welding.

6. The busbar positioning structure according to claim 1, characterized in that, The first engaging part is a protrusion extending towards the conductive post, and the second engaging part is a recessed part away from the busbar direction.

7. The busbar positioning structure according to claim 1, characterized in that, It also includes a limiting frame, which includes a surrounding beam assembly that extends along the side edge of the busbar to form a closed frame; A column is located below the limiting frame and is configured to support the limiting frame.

8. The busbar positioning structure according to claim 7, characterized in that, The limiting frame includes several hollow limiting components, which are connected end to end to form the closed frame.

9. The busbar positioning structure according to claim 7, characterized in that, The surrounding beam assembly is formed by welding rectangular steel or angle steel.

10. A power transmission device, characterized in that, Including the bus positioning structure according to any one of claims 1-9, it further includes: Electrode clips are connected to the conductive posts; An electrode clamp is installed below the busbar and electrically connected to the busbar. The electrode clamp is configured to hold a conductive component connected to the busbar clamp, so that the electrode clamp is electrically connected to the busbar clamp.

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