Modular structure direct current busbar cabinet

Abstract

This application belongs to the field of combiner cabinet technology and discloses a modular DC combiner cabinet, including a combiner cabinet body and multiple through holes disposed at the bottom of the combiner cabinet body. A clamping mechanism is provided on the combiner cabinet body, and the clamping mechanism includes clamping components. Each clamping component includes two elastic arc blocks fixed to the bottom of the combiner cabinet body near the through holes, and an externally threaded tube slidably fitted onto the two arc blocks. The inner walls of the externally threaded tube abut against the mutually distant side walls of the two arc blocks. The outer diameters of the two arc blocks gradually decrease from top to bottom, and the inner diameter of the externally threaded tube also gradually decreases from top to bottom. The number of clamping components is equal to the number of through holes, and their positions correspond one-to-one. The clamping mechanism also includes a lifting component. This application, by setting up a clamping mechanism, eliminates the cumbersome operations of existing technologies and improves the installation efficiency of the combiner cabinet.

Description

Technical Field

[0001] This utility model relates to the field of combiner cabinet technology, and in particular to a modular DC combiner cabinet. Background Technology

[0002] A modular DC combiner cabinet is a device used for power collection, distribution, and protection. It is mainly used in energy storage systems and photovoltaic power generation systems. Through its modular design, it improves the system's flexibility and scalability, and facilitates maintenance and upgrades. The DC combiner cabinet mainly includes input modules, combiner modules, distribution modules, protection modules, monitoring modules, etc., and each module requires corresponding cables to work together.

[0003] The current DC combiner cabinet requires multiple cables to be threaded through the glands one by one during installation, and the locking nuts on each gland must be rotated to clamp and position the cables. This operation is cumbersome and does not improve the efficiency of combiner cabinet installation. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a modular DC combiner cabinet.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a modular DC combiner cabinet, including a combiner cabinet body and a through hole provided at the bottom of the combiner cabinet body, wherein multiple through holes are provided. A clamping mechanism is provided on the combiner cabinet body. The clamping mechanism includes clamping components. The clamping components include two elastic arc blocks fixed at the bottom of the combiner cabinet body near the through holes and an external threaded tube slidably sleeved on the two arc blocks. The inner walls of the external threaded tubes abut against the side walls of the two arc blocks that are far apart from each other. The outer diameter of the two arc blocks gradually decreases from top to bottom, and the inner diameter of the external threaded tube gradually decreases from top to bottom. The number of clamping components is equal to the number of through holes and their positions correspond one-to-one. The clamping mechanism also includes a lifting component for driving multiple external threaded tubes to rise and fall synchronously.

[0006] By adopting the above technical solution, the cable is first passed sequentially through the external threaded tube, between the two arc blocks, and through the wire-passing hole. This process is repeated until the cable to be connected is inserted into the main body of the combiner cabinet. Finally, the lifting assembly drives the external threaded tube upwards. Since the outer diameter of the two arc blocks gradually decreases from top to bottom, and the inner diameter of the external threaded tube also gradually decreases from top to bottom, the ends of the two arc blocks in the same group that are furthest from the main body of the combiner cabinet move closer together and clamp the corresponding cables. Similarly, the lifting assembly drives the external threaded tube downwards. Because the arc blocks are made of elastic material, such as elastic rubber, the ends of the two arc blocks in the same group that are furthest from the main body of the combiner cabinet move away from each other and reset, simultaneously releasing multiple cables. This eliminates the cumbersome operations of existing technologies and improves the installation efficiency of the combiner cabinet.

[0007] Furthermore, the lifting assembly includes an annular plate fixed to the bottom of the main body of the combiner cabinet, a lifting plate slidably disposed within the annular plate, a screw rod that passes through the bottom of the lifting plate and is rotatably connected, an internally threaded pipe that passes through the bottom of the main body of the combiner cabinet and is fixed, and a knob fixed to the lower end of the screw rod. The screw rod is threadedly connected to the internally threaded pipe, and multiple externally threaded pipes pass through the lifting plate and are threadedly connected.

[0008] By employing the above technical solution, rotating the knob drives the screw to rotate. Since the screw is threadedly connected to the internally threaded pipe, and the annular plate is slidably connected to the lifting plate, both the lifting plate and the externally threaded pipe threaded to it rise, thus achieving the purpose of clamping multiple cables. Similarly, rotating the knob drives the screw to rotate in the opposite direction, causing the lifting plate and the externally threaded pipe threaded to it to descend, thus achieving the purpose of releasing multiple cables. Because multiple externally threaded pipes pass through the lifting plate and are threadedly connected, it facilitates the clamping or releasing of a single cable. This device can be used according to specific needs.

[0009] Furthermore, the externally threaded pipe is provided with an auxiliary mechanism, which includes an auxiliary component. The auxiliary component includes a first auxiliary block fixed to the bottom of the externally threaded pipe and a second auxiliary block disposed at the bottom of the externally threaded pipe. The sidewalls of the first auxiliary block and the second auxiliary block that are close to each other are provided with arc grooves. The auxiliary mechanism also includes a limiting component for limiting the second auxiliary block.

[0010] By adopting the above technical solution and setting the first auxiliary block and the second auxiliary block, it is convenient to rotate the externally threaded pipe.

[0011] Furthermore, the limiting component includes a limiting rod fixed to one end of the second auxiliary block near the first auxiliary block and a limiting block fixed to one end of the limiting rod away from the second auxiliary block. A sliding groove is provided on the side wall of the first auxiliary block away from the second auxiliary block, which slides and engages with the limiting block. The limiting rod passes through the sliding groove and slides and engages with the side wall of the first auxiliary block near the second auxiliary block.

[0012] By adopting the above technical solution, during cable threading, the first auxiliary block can be moved away from the second auxiliary block, increasing the distance between them and facilitating cable passage between them. The setting of the limiting rod, limiting block, and sliding groove improves the stability of the second auxiliary block's movement and prevents it from detaching from the first auxiliary block.

[0013] Furthermore, a sliding rod is fixed to the top of the lifting plate, the sliding rod passes through the top of the main body of the combiner cabinet and slides in cooperation, and a limit block is fixed to the upper end of the sliding rod.

[0014] By adopting the above technical solution, the setting of the sliding rod and the limiting block improves the stability of the lifting plate during lifting and lowering, and at the same time avoids the lifting plate falling off the ring plate when it descends.

[0015] Furthermore, a protective sleeve for the cable to pass through is fixed inside the through hole, and the number of the protective sleeves is equal to the number of through holes and their positions correspond one-to-one.

[0016] By adopting the above technical solutions and installing protective sleeves, the probability of cable damage during cable threading is reduced.

[0017] Furthermore, wavy grooves are provided on the sidewalls of the two arc blocks that are close to each other.

[0018] By adopting the above technical solution, the friction force when the arc block clamps the cable is improved.

[0019] In summary, the present invention has the following beneficial effects: by setting up a clamping mechanism, the cumbersome operation of the prior art is eliminated, and the installation efficiency of the combiner cabinet is improved. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0021] Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of the present utility model;

[0022] Figure 3 This is a cross-sectional schematic diagram of an embodiment of the present invention to highlight the connection structure between the arc block and the externally threaded pipe;

[0023] Figure 4 This is a cross-sectional schematic diagram of an embodiment of the present invention to highlight the connection structure between the screw and the internally threaded tube;

[0024] Figure 5 yes Figure 3 Enlarged diagram of point A in the middle.

[0025] In the diagram: 1. Main body of the combiner cabinet; 2. Through hole for wiring; 3. Clamping mechanism; 31. Clamping component; 311. Arc block; 312. External threaded tube; 32. Lifting component; 321. Ring plate; 322. Lifting plate; 323. Screw; 324. Internal threaded tube; 325. Knob; 4. Auxiliary mechanism; 41. Auxiliary component; 411. First auxiliary block; 412. Second auxiliary block; 42. Limiting component; 421. Limiting rod; 422. Limiting block; 423. Slide groove; 5. Slide rod; 6. Limiting block; 7. Protective sleeve. Detailed Implementation

[0026] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] like Figure 1-5As shown in the figure, this application discloses a modular DC combiner cabinet, including a combiner cabinet body 1, a clamping mechanism 3, and an auxiliary mechanism 4. A through-hole 2 is provided through the bottom of the combiner cabinet body 1, and multiple through-holes 2 are provided. The clamping mechanism 3 is disposed on the combiner cabinet body 1, and includes a clamping component 31 and a lifting component 32. The clamping component 31 includes the through-hole 2, the combiner cabinet body 1, and an external threaded tube 312. An arc block 311 is fixed to the bottom of the combiner cabinet body 1 near the through-hole 2. Two arc blocks 311 are provided and symmetrically arranged about the axis of the through-hole 2, with the outer diameter of the two arc blocks 311 gradually decreasing from top to bottom. The external threaded tube 312 is slidably sleeved on the two arc blocks 311, and the inner wall of the external threaded tube 312 abuts against the mutually distant side walls of the two arc blocks 311. The inner diameter of the external threaded tube 312 gradually decreases from top to bottom. The number of clamping components 31 is equal to the number of through holes 2, and their positions correspond one-to-one. First, the cable is passed through the external threaded tube 312, between the two arc blocks 311, and through hole 2 in sequence. Then, the above actions are repeated until the cable to be connected is passed into the main body 1 of the combiner cabinet. Finally, the external threaded tube 312 is driven to rise by the lifting component 32. Since the outer diameter of the two arc blocks 311 gradually decreases from top to bottom, and the inner diameter of the external threaded tube 312 gradually decreases from top to bottom, the ends of the two arc blocks 311 in the same group that are away from the main body 1 of the combiner cabinet move closer to each other and clamp the corresponding cables. Similarly, the external threaded pipe 312 is driven down by the lifting component 32. Since the arc block 311 is made of elastic material, such as elastic rubber, the ends of the two arc blocks 311 in the same group that are away from the main body 1 of the combiner cabinet are moved away from each other and reset. At the same time, multiple cables are released, eliminating the cumbersome operation of the existing technology and improving the installation efficiency of the combiner cabinet.

[0028] The lifting assembly 32 is used to drive multiple externally threaded pipes 312 to rise and fall synchronously. The lifting assembly 32 includes an annular plate 321, a lifting plate 322, a screw 323, an internally threaded pipe 324, and a knob 325. The annular plate 321 is fixed to the bottom of the main body 1 of the combiner cabinet, and the lifting plate 322 is slidably disposed within the annular plate 321. The screw 323 passes through the bottom of the lifting plate 322 and is rotatably connected, while the internally threaded pipe 324 passes through the bottom of the main body 1 of the combiner cabinet and is fixed. The screw 323 is threadedly connected to the internally threaded pipe 324, and the knob 325 is fixed to the lower end of the screw 323. Multiple externally threaded pipes 312 pass through the lifting plate 322 and are threadedly connected. Rotating knob 325 drives screw 323 to rotate. Since screw 323 is threadedly connected to internally threaded tube 324, and annular plate 321 is slidably connected to lifting plate 322, both lifting plate 322 and externally threaded tube 312 threadedly connected to it rise, thus clamping multiple cables. Similarly, rotating knob 325 drives screw 323 to rotate in the opposite direction, causing lifting plate 322 and externally threaded tube 312 threadedly connected to it to descend, thus releasing multiple cables. Because multiple externally threaded tubes 312 pass through lifting plate 322 and are threadedly connected, it facilitates clamping or releasing single cables, allowing this device to be used according to specific needs.

[0029] An auxiliary mechanism 4 is mounted on the externally threaded tube 312. The auxiliary mechanism 4 includes an auxiliary component 41 and a limiting component 42. A first auxiliary block 411 is fixed to the bottom of the externally threaded tube 312, and a second auxiliary block 412 is mounted on the bottom of the externally threaded tube 312. Arc grooves are formed on the sidewalls of the first auxiliary block 411 and the second auxiliary block 412 that are close to each other. The first auxiliary block 411 and the second auxiliary block 412 facilitate the rotation of the externally threaded tube 312.

[0030] The limiting component 42 is used to limit the second auxiliary block 412. The limiting component 42 includes a limiting rod 421 and a limiting block 422. The limiting rod 421 is fixed to the end of the second auxiliary block 412 near the first auxiliary block 411, and the limiting block 422 is fixed to the end of the limiting rod 421 away from the second auxiliary block 412. A groove 423 is formed on the side wall of the first auxiliary block 411 away from the second auxiliary block 412, which slides and engages with the limiting block 422. The limiting rod 421 passes through the groove 423 and slides and engages with the side wall of the first auxiliary block 412. During cable threading, the first auxiliary block 411 can be moved away from the second auxiliary block 412, increasing the distance between the first auxiliary block 411 and the second auxiliary block 412, facilitating the cable to pass between the first auxiliary block 411 and the second auxiliary block 412. The setting of the limiting rod 421, the limiting block 422 and the slide groove 423 improves the stability of the movement of the second auxiliary block 412, and at the same time prevents the second auxiliary block 412 from falling off the first auxiliary block 411.

[0031] A sliding rod 5 is fixed to the top of the lifting plate 322. The sliding rod 5 passes through the top of the main body 1 of the combiner cabinet and slides in cooperation with it. A limit block 6 is fixed to the upper end of the sliding rod 5. The setting of the sliding rod 5 and the limit block 6 improves the stability of the lifting plate 322 when it is raised and lowered, and at the same time prevents the lifting plate 322 from falling off the annular plate 321 when it is lowered.

[0032] A protective sleeve 7 is fixed inside the through hole 2 to allow the cable to pass through. The number of protective sleeves 7 is equal to the number of through holes 2, and their positions correspond one-to-one. The protective sleeves 7 reduce the probability of cable damage during cable threading.

[0033] Both of the two arc blocks 311 have wavy grooves on their sidewalls where they are close to each other. This increases the friction when the arc blocks 311 clamp the cable.

[0034] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A modular DC combiner cabinet, comprising a main body (1) and a plurality of through holes (2) disposed at the bottom of the main body (1), characterized in that: The main body (1) of the combiner cabinet is provided with a clamping mechanism (3). The clamping mechanism (3) includes a clamping component (31). The clamping component (31) includes two elastic arc blocks (311) fixed at the bottom of the main body (1) near the wire through hole (2) and an external threaded tube (312) slidably sleeved on the two arc blocks (311). The inner wall of the external threaded tube (312) abuts against the side walls of the two arc blocks (311) that are far apart from each other. The outer diameter of the two arc blocks (311) gradually decreases from top to bottom. The inner diameter of the external threaded tube (312) gradually decreases from top to bottom. The number of clamping components (31) is equal to the number of wire through holes (2) and their positions correspond one-to-one. The clamping mechanism (3) also includes a lifting component (32) for driving multiple external threaded tubes (312) to rise and fall synchronously.

2. The modular DC combiner cabinet according to claim 1, characterized in that: The lifting assembly (32) includes an annular plate (321) fixed to the bottom of the main body (1) of the combiner cabinet, a lifting plate (322) slidably disposed in the annular plate (321), a screw (323) passing through the bottom of the lifting plate (322) and rotatably connected, an internal threaded tube (324) passing through the bottom of the main body (1) of the combiner cabinet and fixed, and a knob (325) fixed to the lower end of the screw (323). The screw (323) is threadedly connected to the internal threaded tube (324), and multiple external threaded tubes (312) all pass through the lifting plate (322) and are threadedly connected.

3. The modular DC combiner cabinet according to claim 1, characterized in that: An auxiliary mechanism (4) is provided on the external threaded tube (312). The auxiliary mechanism (4) includes an auxiliary component (41). The auxiliary component (41) includes a first auxiliary block (411) fixed to the bottom of the external threaded tube (312) and a second auxiliary block (412) disposed at the bottom of the external threaded tube (312). The sidewalls of the first auxiliary block (411) and the second auxiliary block (412) that are close to each other are provided with arc grooves. The auxiliary mechanism (4) also includes a limiting component (42) for limiting the second auxiliary block (412).

4. A modular DC combiner cabinet according to claim 3, characterized in that: The limiting component (42) includes a limiting rod (421) fixed to one end of the second auxiliary block (412) near the first auxiliary block (411) and a limiting block (422) fixed to one end of the limiting rod (421) away from the second auxiliary block (412). A sliding groove (423) is provided on the side wall of the first auxiliary block (411) away from the second auxiliary block (412) to slide with the limiting block (422). The limiting rod (421) passes through the sliding groove (423) on the side wall of the second auxiliary block (412) and slides with it.

5. A modular DC combiner cabinet according to claim 2, characterized in that: The top of the lifting plate (322) is fixed with a slide rod (5), which passes through the top of the main body (1) of the junction box and slides in cooperation. The upper end of the slide rod (5) is fixed with a limit block (6).

6. A modular DC combiner cabinet according to claim 1, characterized in that: The through hole (2) is fixed with a protective sleeve (7) for the cable to pass through. The number of protective sleeves (7) is equal to the number of through holes (2) and their positions correspond one-to-one.

7. A modular DC combiner cabinet according to claim 1, characterized in that: The two arc blocks (311) are provided with wavy grooves on their sidewalls that are close to each other.

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