Bus duct with telescopic variable structure and cooperative control method thereof

Abstract

The invention discloses a bus duct with a telescopic variable structure and a cooperative control method thereof, the bus duct comprises a bus duct shell and a plurality of copper bars arranged in the bus duct shell, the middle positions of the plurality of copper bars are connected with a limiting clamping frame in a clamping manner, and the plurality of copper bars are connected to the bus duct shell through limiting clamping frame bolts, so that the plurality of copper bars are limited and fixed; the bus duct is arranged in a two-section mode, an adjustable telescopic structure is arranged in the middle of the bus duct, and the interior of the end face of the adjustable telescopic structure is connected to a plurality of copper bars in a clamped mode so that the length of the copper bars at the two ends of the adjustable telescopic structure can be adjusted. According to the invention, accurate adjustment of the length of the bus duct is realized through lead screw transmission of an adjustable telescopic structure and a connecting rod mechanism, and the conductive connection design of the connecting guide block and the copper bar is matched, so that the conductive continuity is kept in the telescopic process, and the size requirements of different installation scenes are met.

Description

Technical Field

[0001] This invention relates to the field of busbar trunking application technology, and in particular to a busbar trunking with a telescopic and variable structure and its coordinated control method. Background Technology

[0002] Traditional busbar trunking is mostly designed with a fixed length. In actual installation scenarios, if there are changes in building space dimensions or equipment position adjustments, it is necessary to adapt it by cutting and splicing. This is not only cumbersome, but may also damage the structural integrity of the busbar trunking and affect its conductivity and stability.

[0003] Meanwhile, the copper busbar fixing method of traditional busbar trunking is simple, which is prone to displacement and loosening during long-term use, and lacks an effective expansion and contraction adjustment and collaborative reinforcement mechanism, making it difficult to meet the requirements of busbar trunking for flexibility and safety in complex power environments. Therefore, this invention proposes a busbar trunking with an expansion and contraction variable structure and its collaborative control method. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a busbar trunking with a telescopic and variable structure and its coordinated control method, so as to realize the flexible adjustment of the length of the busbar trunking, while ensuring the stability of the copper busbar fixing and the structural safety during the adjustment process.

[0005] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: a busbar trunking with a telescopic and variable structure is provided, including a busbar trunking housing and a plurality of copper busbars inside, wherein a limiting bracket is engaged and connected to the middle position of the plurality of copper busbars, and the limiting bracket is bolted to the busbar trunking housing to achieve limiting and fixing of the plurality of copper busbars; The busbar trunking is designed in two sections, with an adjustable telescopic structure in the middle section. The end face of the adjustable telescopic structure is internally engaged with multiple copper busbars to adjust the length of the copper busbars at both ends of the adjustable telescopic structure. The outer wall of the busbar housing is bolted with a reinforcement structure near the end face, and the reinforcement structure is movably connected to the end of the adjustable telescopic structure to cooperate with the copper busbar to maintain the stability of the entire busbar when it is adjusted and moved.

[0006] The present invention is further configured such that: the limiting bracket includes two horizontal bars and two vertical bars, and the opposite walls of the two horizontal bars are provided with limiting strips, and are engaged and connected to the limiting grooves opened at corresponding positions on the side walls of multiple copper busbars through the limiting strips; Both vertical rods have T-shaped end faces and are respectively engaged with T-slots opened on the end faces of the two horizontal rods.

[0007] By using the above technical solution, the limiting strip on the horizontal bar can be engaged with the limiting groove of the copper busbar to accurately limit the horizontal position of the copper busbar and prevent lateral displacement of the copper busbar. At the same time, the T-shaped vertical bar and the T-groove of the horizontal bar engage to form a frame-type fixing structure, which not only facilitates the assembly and disassembly of the limiting bracket, but also constrains the copper busbar from the vertical direction, further improving the stability of the copper busbar fixing.

[0008] The present invention is further configured such that: multiple weight-reducing holes are provided inside the two vertical rods, and elastic plates are provided at the T-shaped ends of the two vertical rods and abut against the inside of the T-groove.

[0009] Through the above technical solutions, the weight reduction hole can reduce the overall weight of the limit bracket and reduce the load on the busbar while ensuring the structural strength of the vertical rod; while the elastic sheet generates elastic clamping force in the T-groove, which can eliminate the assembly gap between the vertical rod and the horizontal rod, prevent them from loosening due to vibration during the operation of the busbar, and enhance the stability of the locking structure.

[0010] The invention is further configured such that: the adjustable telescopic structure includes a mounting shell, an adjusting screw is rotatably connected inside the mounting shell, an adjusting block is threadedly connected to the outer wall of the adjusting screw, a plurality of push rods are equidistantly arranged inside the adjusting block, a connecting rod is rotatably connected to both ends of the plurality of push rods, a connecting guide block is rotatably connected to the other end of each of the two sets of connecting rods, and the two sets of connecting guide blocks are electrically connected to correspondingly arranged copper busbars, the corresponding ends of the plurality of connecting guide blocks and the plurality of copper busbars are connected and fixed by a sleeved connecting frame, and the connecting frame is slidably connected to the inner wall of the mounting shell.

[0011] With the above technical solution, when the adjusting screw rotates, the adjusting block can be moved along the screw axis through threaded transmission; during the movement of the adjusting block, the push rod is pushed to cause the connecting rod to expand or contract, thereby pulling the connecting guide block to slide along the inner wall of the mounting shell; since the connecting guide block and the copper busbar are fixed by the connecting frame, the sliding of the connecting guide block can drive the copper busbar to expand and contract, thereby realizing the adjustment of the busbar length; at the same time, the electrical connection design between the connecting guide block and the copper busbar can ensure the conductivity continuity of the busbar during expansion and contraction.

[0012] The present invention is further configured such that: the end face of the adjusting screw is rotatably connected to the mounting housing via a bearing, and a rotating head is fixedly connected to one end.

[0013] Through the above technical solutions, the bearing connection can reduce the frictional resistance between the adjusting screw and the mounting housing, ensure the smooth rotation of the adjusting screw, and reduce the difficulty of the adjustment operation; the rotating head provides the operator with a convenient point of force application, and the adjusting screw can be driven to rotate directly by wrench or manual rotation of the rotating head, simplifying the adjustment process.

[0014] The present invention is further configured such that: grooves are provided at the middle of both ends of the adjusting block, and slide bars are slidably connected to the inner wall of the mounting shell through the grooves.

[0015] Through the above technical solution, the sliding cooperation between the adjusting block and the slide bar can guide the movement direction of the adjusting block, prevent the adjusting block from shifting circumferentially as the adjusting screw rotates, ensure that the adjusting block can move stably along the axial direction, thereby ensuring the accuracy of the transmission of the push rod and the connecting rod, and improving the precision of the copper busbar telescopic adjustment.

[0016] The present invention is further configured such that: the multiple connecting guide blocks and the multiple copper busbars are respectively provided with bayonet B and bayonet A at their opposite ends, and the side of the connecting frame is provided with a connecting insert plate, which is respectively engaged and connected to bayonet A and bayonet B.

[0017] With the above technical solution, the connecting plate can be simultaneously engaged with both bayonet A and bayonet B, which can quickly fix the connecting guide block and the copper busbar. The engaging structure can ensure the tightness of the connection between the two and avoid loosening due to vibration. At the same time, the structure is easy to disassemble. When it is necessary to replace the copper busbar or the connecting guide block, the two can be separated simply by pulling out the connecting plate, which reduces maintenance costs.

[0018] The present invention is further configured such that: the reinforcement structure includes a reinforcement frame bolted to the top of the busbar housing, and the reinforcement frame is inserted into an adjustment groove correspondingly opened on the outer wall of the mounting housing; a slot is opened in the middle of the reinforcement frame; toothed blocks are symmetrically fixedly connected to the two side walls of the reinforcement frame; and a compression screw is provided through the inside of the reinforcement frame, and the outer wall of the compression screw is pressed against the inner wall of the slot.

[0019] With the above technical solution, the reinforcing frame is inserted into the adjustment groove and can slide synchronously with the movement of the mounting shell when the busbar trunking is extended and retracted, ensuring the coordination between the reinforcing structure and the adjustable telescopic structure; when the extrusion screw is turned, the screw extrudes the inner wall of the groove, causing the two side walls of the reinforcing frame to expand outward, driving the toothed block to fit against the inner wall of the adjustment groove, thereby fixing the reinforcing frame and the mounting shell and preventing the busbar trunking from shaking during use.

[0020] The present invention is further configured such that: the inner wall of the adjusting groove is provided with a plurality of toothed grooves, and the toothed grooves can be engaged with a plurality of toothed blocks.

[0021] Through the above technical solution, the engagement of the toothed block and the toothed groove can increase the connecting friction between the reinforcement frame and the mounting shell, prevent the two from sliding relative to each other, and further improve the reinforcement effect. At the same time, the design of multiple toothed grooves can enable the reinforcement frame to engage with the adjustment groove at different telescopic positions, so as to meet the reinforcement requirements after the busbar trunking is adjusted to different lengths.

[0022] On the other hand, a control method for a busbar trunking with a telescopic and variable structure is provided, including the following steps; S1. Assemble and fix multiple copper busbars using a limit bracket to ensure that the limit strip of the horizontal bar is fully inserted into the limit groove of the copper busbar, and that the T-shaped end of the vertical bar is inserted into the T-groove of the horizontal bar and the elastic piece is pressed against it. S2. Then, the assembled copper busbar and the limit bracket are installed into the busbar housing as a whole, and the limit bracket is fixed to the busbar housing with bolts. S3. Check whether the connecting guide block and copper busbar of the adjustable telescopic structure are locked and fixed by the connecting bracket and connecting plate to ensure normal conductive connection. S4. Rotate the adjusting screw by rotating the rotating head. The rotation of the adjusting screw drives the adjusting block to move along the slide bar axis. The adjusting block pushes the push rod to make the connecting rod expand or contract, which in turn pulls the connecting guide block to slide along the inner wall of the mounting shell, causing the copper busbar to expand and contract. During the adjustment process, observe the overall length of the busbar in real time until the target size is reached. S5. Tighten the extrusion screw of the reinforcement structure. The extrusion screw presses against the slotted inner wall of the reinforcement frame, causing the two side walls of the reinforcement frame to expand. This causes the toothed block to engage with the toothed groove of the adjustment slot. Continue to tighten the extrusion screw until the toothed block and the toothed groove are tightly engaged. The reinforcement frame and the mounting shell are then fixed, completing the coordinated reinforcement of the busbar trunking and enabling the adjustable length operation of the busbar trunking.

[0023] The beneficial effects of this invention are as follows: 1. The present invention proposes a busbar trunking with a telescopic and variable structure and its collaborative control method. Through the frame-type locking structure of the limiting bracket, the copper busbar is fixed in multiple directions. Combined with the design of weight-reducing holes and elastic plates, the structural weight is reduced and the assembly gap is eliminated while ensuring the stability of the copper busbar, thereby improving the structural reliability of the busbar trunking. 2. The present invention proposes a busbar trunking with a telescopic and variable structure and its collaborative control method. Through the screw drive and linkage mechanism of the adjustable telescopic structure, the length of the busbar trunking can be precisely adjusted. With the conductive connection design of the connecting guide block and the copper busbar, the conductivity is maintained during the telescopic process, which meets the size requirements of different installation scenarios. 3. The busbar trunking with a telescopic and variable structure and its collaborative control method proposed in this invention can quickly achieve collaborative reinforcement after the busbar trunking is telescopically adjusted by the engagement of the toothed blocks and toothed grooves of the reinforcement structure and the extrusion reinforcement mechanism of the extrusion screw, thereby avoiding structural loosening after adjustment and improving the safety of the busbar trunking. Attached Figure Description

[0024] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is a first internal structural diagram of the present invention; Figure 3 This is a second internal structural diagram of the present invention; Figure 4This is a structural diagram of the limiting card holder in this invention; Figure 5 for Figure 4 Exploded view of point A in the middle; Figure 6 This is a schematic diagram of the adjustable telescopic structure in this invention; Figure 7 This is a cross-sectional view of the adjustable telescopic structure in this invention; Figure 8 This is a connection structure diagram of the connecting frame in this invention; Figure 9 This is a schematic diagram of the reinforcement structure in this invention.

[0025] In the diagram: 1. Busbar housing; 2. Limiting bracket; 21. Horizontal bar; 211. Limiting strip; 212. T-slot; 22. Vertical bar; 221. Weight reduction hole; 222. Elastic sheet; 3. Copper busbar; 31. Bayonet A; 32. Limiting groove; 4. Adjustable telescopic structure; 41. Mounting shell; 411. Adjustment groove; 412. Tooth groove; 413. Slide bar; 42. Adjustment screw; 421. Rotating head; 43. Adjustment block; 44. Push rod; 45. Connecting rod; 46. Connecting guide block; 461. Bayonet B; 47. Connecting frame; 471. Connecting insert plate; 5. Reinforced structure; 51. Reinforced frame; 52. Slotting; 53. Toothed block; 54. Extrusion screw. Detailed Implementation

[0026] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0027] like Figures 1-4 As shown, a busbar trunking with a telescopic and variable structure includes a busbar trunking housing 1 and multiple copper busbars 3 inside. A limiting bracket 2 is engaged and connected to the middle position of the multiple copper busbars 3, and is bolted to the busbar trunking housing 1 to achieve limiting and fixing of the multiple copper busbars 3. The limiting bracket 2 includes two horizontal bars 21 and two vertical bars 22. The opposite walls of the two horizontal bars 21 are provided with limiting strips 211, and are engaged and connected to limiting grooves 32 opened at corresponding positions on the side walls of the multiple copper busbars 3 through the limiting strips 211. By using the limiting strips 211 on the horizontal bars 21 to engage with the limiting grooves 32 of the copper busbars 3, the copper busbars 3 can be precisely limited in the horizontal direction to avoid lateral displacement of the copper busbars 3.

[0028] like Figure 4 and Figure 5As shown, the ends of the two vertical rods 22 are T-shaped and are respectively engaged with the T-grooves 212 opened on the ends of the two horizontal rods 21. At the same time, the T-shaped vertical rods 22 and the T-grooves 212 of the horizontal rods 21 engage to form a frame-type fixing structure, which facilitates the assembly and disassembly of the limiting bracket 2 and can constrain the copper busbar 3 from the vertical direction, further improving the stability of the copper busbar 3 fixing. Multiple weight-reducing holes 221 are provided inside the two vertical rods 22. The weight-reducing holes 221 can reduce the overall weight of the limit bracket 2 and reduce the load on the busbar trunking while ensuring the structural strength of the vertical rods 22. Both vertical rods 22 are provided with elastic plates 222 at their T-shaped ends, which are pressed against the inside of the T-groove 212. The elastic plates 222 generate elastic pressing force in the T-groove 212, which can eliminate the assembly gap between the vertical rod 22 and the horizontal rod 21, prevent the two from loosening due to vibration during the operation of the busbar, and enhance the stability of the locking structure.

[0029] like Figure 6 and Figure 7 As shown, the busbar trunking is set in two sections, with an adjustable telescopic structure 4 in the middle section. The end face of the adjustable telescopic structure 4 is internally engaged with multiple copper busbars 3 to achieve adjustment of the length of the copper busbars 3 at both ends of the adjustable telescopic structure 4. The adjustable telescopic structure 4 includes a mounting shell 41, with an adjusting screw 42 rotatably connected inside the mounting shell 41. When the adjusting screw 42 rotates, it can drive the adjusting block 43 to move along the screw axis through threaded transmission. The end face of the adjusting screw 42 is rotatably connected to the mounting shell 41 through a bearing, and a rotating head 421 is fixedly connected to one end. The bearing connection can reduce the frictional resistance between the adjusting screw 42 and the mounting shell 41, ensure the smooth rotation of the adjusting screw 42, and reduce the difficulty of adjustment operation. The rotating head 421 provides a convenient force application point for the operator, and the adjusting screw 42 can be driven to rotate directly by wrench or manual rotation of the rotating head 421, simplifying the adjustment process. An adjusting block 43 is threadedly connected to the outer wall of the adjusting screw 42. During the movement of the adjusting block 43, it pushes the push rod 44 to drive the connecting rod 45 to expand or contract, thereby pulling the connecting guide block 46 to slide along the inner wall of the mounting shell 41. The adjusting block 43 has grooves in the middle of both ends, and slide strips 413 are slidably connected to the inner wall of the mounting shell 41 through the grooves. The sliding cooperation between the adjusting block 43 and the slide strip 413 can guide the movement direction of the adjusting block 43, prevent the adjusting block 43 from shifting circumferentially as the adjusting screw 42 rotates, and ensure that the adjusting block 43 can move stably along the axial direction, thereby ensuring the accuracy of the transmission of the push rod 44 and the connecting rod 45 and improving the accuracy of the extension and retraction adjustment of the copper busbar 3. Multiple push rods 44 are equidistantly arranged inside the adjusting block 43. Each end of the push rod 44 is rotatably connected to a connecting rod 45. The other end of each of the two sets of connecting rods 45 is rotatably connected to a connecting guide block 46. The two sets of connecting guide blocks 46 are electrically connected to the corresponding copper busbars 3. The corresponding ends of the multiple connecting guide blocks 46 and the multiple copper busbars 3 are connected and fixed by a sleeved connecting frame 47. The connecting frame 47 is slidably connected to the inner wall of the mounting shell 41. Since the connecting guide blocks 46 and the copper busbars 3 are fixed by the connecting frame 47, the sliding of the connecting guide blocks 46 can drive the copper busbars 3 to extend and retract, thereby adjusting the length of the busbar trunking. At the same time, the electrical connection design between the connecting guide blocks 46 and the copper busbars 3 can ensure the continuity of the busbar trunking's conductivity during the extension and retraction process.

[0030] like Figure 8 As shown, multiple connecting guide blocks 46 and multiple copper busbars 3 have bayonet slots B461 and A31 respectively at their opposite ends. A connecting insert plate 471 is provided through the side of the connecting frame 47, and the connecting insert plate 471 is respectively engaged with bayonet slots A31 and B461. The connecting insert plate 471 is engaged with bayonet slots A31 and B461 at the same time, which can realize the quick fixation of connecting guide blocks 46 and copper busbars 3. The engaging structure can ensure the tightness of the connection between the two and avoid loosening due to vibration. At the same time, this structure is easy to disassemble. When it is necessary to replace copper busbars 3 or connecting guide blocks 46, it is only necessary to pull out the connecting insert plate 471 to separate the two, reducing maintenance costs.

[0031] like Figures 7-9 As shown, a reinforcing structure 5 is bolted to the outer wall of the busbar housing 1 near the end face, and the reinforcing structure 5 is movably connected to the end of the adjustable telescopic structure 4 to cooperate with the copper busbar 3 to ensure the stability of the entire busbar when it is adjusted and moved. The reinforcement structure 5 includes a reinforcement frame 51 bolted to the top of the busbar housing 1. The reinforcement frame 51 is inserted into the adjustment slot 411 and can slide synchronously with the movement of the mounting shell 41 when the busbar is extended or retracted, ensuring the coordination between the reinforcement structure 5 and the adjustable telescopic structure 4. The reinforcement frame 51 is inserted into the adjustment slot 411 corresponding to the outer wall of the mounting shell 41. A slot 52 is provided in the middle of the reinforcement frame 51. Tooth blocks 53 are symmetrically fixed to the two side walls of the reinforcement frame 51. Multiple toothed grooves 412 are provided on the inner wall of the adjustment slot 411, and the toothed grooves 412 can be engaged with the multiple toothed blocks 53. The engagement of the toothed blocks 53 and the toothed grooves 412 can increase the connection friction between the reinforcement frame 51 and the mounting shell 41, prevent the two from sliding relative to each other, and further improve the reinforcement effect. At the same time, the design of multiple toothed grooves 412 allows the reinforcement frame 51 to engage with the adjustment slot 411 at different telescopic positions, meeting the reinforcement requirements after the busbar is adjusted to different lengths. A compression screw 54 is installed through the interior of the reinforcing frame 51, and the outer wall of the compression screw 54 is pressed against the inner wall of the slot 52. When the compression screw 54 is turned, the screw presses against the inner wall of the slot 52, causing the two side walls of the reinforcing frame 51 to expand outward, which drives the tooth block 53 to fit against the inner wall of the adjusting groove 411, thereby fixing the reinforcing frame 51 to the mounting shell 41 and preventing the busbar trunking from shaking during use.

[0032] like Figures 1-9 As shown, a control method for a busbar trunking with a telescopic and variable structure includes the following steps; S1. Assemble and fix multiple copper busbars 3 through the limiting bracket 2, ensuring that the limiting strip 211 of the horizontal bar 21 is fully inserted into the limiting groove 32 of the copper busbar 3, and the T-shaped end of the vertical bar 22 is inserted into the T-groove 212 of the horizontal bar 21 and the elastic piece 222 is pressed against it. S2. Then, the assembled copper busbar 3 and the limiting bracket 2 are installed into the busbar housing 1 as a whole, and the limiting bracket 2 is fixed to the busbar housing 1 with bolts. S3. Check whether the connecting guide block 46 of the adjustable telescopic structure 4 and the copper busbar 3 are engaged and fixed by the connecting bracket 47 and the connecting plate 471 to ensure normal conductive connection. S4. Rotate the adjusting screw 42 by rotating the rotating head 421. The rotating adjusting screw 42 drives the adjusting block 43 to move axially along the slide bar 413. The adjusting block 43 pushes the push rod 44 to make the connecting rod 45 expand or contract, thereby pulling the connecting guide block 46 to slide along the inner wall of the mounting shell 41, driving the copper busbar 3 to extend and retract. During the adjustment process, observe the overall length of the busbar in real time until the target size is reached. S5. Tighten the extrusion screw 54 of the reinforcing structure 5. The extrusion screw 54 extrudes the inner wall of the slot 52 of the reinforcing frame 51, causing the two side walls of the reinforcing frame 51 to expand. This causes the toothed block 53 to engage with the toothed groove 412 of the adjusting groove 411. Continue to tighten the extrusion screw 54 until the toothed block 53 and the toothed groove 412 are tightly engaged. The reinforcing frame 51 and the mounting shell 41 are then fixed, completing the coordinated reinforcement of the busbar trunking and enabling the adjustable length operation of the busbar trunking.

[0033] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A busbar trunking system with a telescopic and variable structure, comprising a busbar trunking housing (1) and a plurality of copper busbars (3) disposed therein, characterized in that: The middle positions of the multiple copper busbars (3) are engaged with the limiting bracket (2), and the limiting bracket (2) is bolted to the busbar housing (1) to achieve limiting and fixing of the multiple copper busbars (3); The busbar trunking is configured in two sections, with an adjustable telescopic structure (4) in the middle section. The end face of the adjustable telescopic structure (4) is internally engaged with multiple copper busbars (3) to adjust the length of the copper busbars (3) at both ends of the adjustable telescopic structure (4). The outer wall of the busbar housing (1) is bolted to a reinforcing structure (5) near the end face, and the reinforcing structure (5) is movably connected to the end of the adjustable telescopic structure (4) to cooperate with the copper busbar (3) to ensure the stability of the entire busbar when it is adjusted and moved.

2. A busbar trunking system with a telescopic and variable structure according to claim 1, characterized in that: The limiting bracket (2) includes two horizontal bars (21) and two vertical bars (22). The opposite walls of the two horizontal bars (21) are provided with limiting strips (211), and the limiting strips (211) are engaged and connected to the limiting grooves (32) opened at the corresponding positions on the side walls of multiple copper busbars (3). The ends of the two vertical rods (22) are T-shaped and are respectively engaged with the T-grooves (212) opened on the ends of the two horizontal rods (21).

3. A busbar trunking system with a telescopic and variable structure according to claim 2, characterized in that: Both vertical rods (22) have multiple weight-reducing holes (221) inside, and both vertical rods (22) have elastic plates (222) at their T-shaped ends, which are pressed against the inside of the T-groove (212).

4. A busbar trunking system with a telescopic and variable structure according to claim 1, characterized in that: The adjustable telescopic structure (4) includes a mounting shell (41), an adjusting screw (42) is rotatably connected inside the mounting shell (41), an adjusting block (43) is threadedly connected to the outer wall of the adjusting screw (42), a plurality of push rods (44) are equidistantly arranged inside the adjusting block (43), a connecting rod (45) is rotatably connected to both ends of the plurality of push rods (44), a connecting guide block (46) is rotatably connected to the other end of the two sets of connecting rods (45), and the two sets of connecting guide blocks (46) are electrically connected to the corresponding copper busbars (3), the corresponding ends of the plurality of connecting guide blocks (46) and the plurality of copper busbars (3) are connected and fixed by a sleeved connecting frame (47), and the connecting frame (47) is slidably connected to the inner wall of the mounting shell (41).

5. A busbar trunking system with a telescopic and variable structure according to claim 4, characterized in that: The end face of the adjusting screw (42) is rotatably connected to the mounting shell (41) via a bearing, and a rotating head (421) is fixedly connected to one end.

6. A busbar trunking system with a telescopic and variable structure according to claim 4, characterized in that: The adjustment block (43) has grooves at the middle of both ends, and slide bars (413) are slidably connected to the inner wall of the mounting shell (41) through the grooves.

7. A busbar trunking system with a telescopic and variable structure according to claim 4, characterized in that: The multiple connecting guide blocks (46) and the multiple copper busbars (3) are respectively provided with bayonet B (461) and bayonet A (31) at opposite ends. The side of the connecting frame (47) is provided with a connecting insert plate (471), and the connecting insert plate (471) is respectively engaged and connected to bayonet A (31) and bayonet B (461).

8. A busbar trunking system with a telescopic and variable structure according to claim 4, characterized in that: The reinforcement structure (5) includes a reinforcement frame (51) bolted to the top of the busbar housing (1), and the reinforcement frame (51) is inserted into the adjustment groove (411) corresponding to the outer wall of the mounting shell (41). The reinforcement frame (51) has a slot (52) in the middle. The two side walls of the reinforcement frame (51) are symmetrically fixed with toothed blocks (53). The reinforcement frame (51) has a pressing screw (54) running through it. The outer wall of the pressing screw (54) is pressed against the inner wall of the slot (52).

9. A busbar trunking system with a telescopic and variable structure according to claim 8, characterized in that: The inner wall of the adjustment groove (411) is provided with multiple toothed grooves (412), and the toothed grooves (412) can be engaged with multiple toothed blocks (53).

10. A control method for a busbar trunking with a telescopic and variable structure according to any one of claims 1-9, characterized in that: Includes the following steps; S1. Assemble and fix multiple copper busbars (3) through the limiting bracket (2) to ensure that the limiting strip (211) of the horizontal bar (21) is fully inserted into the limiting groove (32) of the copper busbar, and the T-shaped end of the vertical bar (22) is inserted into the T-groove (212) of the horizontal bar and the elastic piece (222) is pressed against it. S2. Then, the assembled copper busbar (3) and the limiting bracket (2) are installed into the busbar housing (1) as a whole, and the limiting bracket (2) is fixed to the busbar housing (1) by bolts. S3. Check whether the connecting guide block (46) of the adjustable telescopic structure (4) and the copper busbar (3) are engaged and fixed by the connecting bracket (47) and the connecting plate (471) to ensure normal conductive connection; S4. Rotate the adjusting screw (42) by rotating the rotating head (421). The adjusting screw (42) rotates and drives the adjusting block (43) to move axially along the slide bar (413). The adjusting block (43) pushes the push rod (44) to make the connecting rod (45) expand or contract, thereby pulling the connecting guide block (46) to slide along the inner wall of the mounting shell (41), driving the copper busbar (3) to extend and retract. During the adjustment process, observe the overall length of the busbar in real time until the target size is reached. S5. Twist the extrusion screw (54) of the reinforcing structure (5). The extrusion screw (54) extrudes the inner wall of the slot (52) of the reinforcing frame (51), causing the two side walls of the reinforcing frame (51) to expand. This causes the toothed block (53) to be inserted into the toothed groove (412) of the adjustment groove (411). Continue to twist the extrusion screw (54) until the toothed block (53) and the toothed groove (412) are tightly engaged. The reinforcing frame (51) and the mounting shell (41) are fixed, completing the coordinated reinforcement of the busbar trunking and thus realizing the adjustable length operation of the busbar trunking.

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