A special-shaped rigid bus coupler, switch cabinet and installation method

Abstract

The present invention discloses a special-shaped rigid bus coupler, a switch cabinet and an installation method. The key points of the technical solution include a conductive copper core, which includes a bent portion and a middle portion, and the bent portion and the middle portion are integrally cast; an insulating layer is provided outside the conductive copper core, and the insulating layer is directly wrapped outside the conductive copper core through an extrusion process; a conductive rubber is wrapped between the insulating layer and the conductive copper core; the integrally arranged conductive copper core can reduce the bending of the copper core and improve the safety during power transmission; it also includes a switch cabinet, which includes a cabinet body, a bus chamber is arranged on the cabinet body, and a pair of front brackets are detachably connected at the opening of the bus chamber. The detachably arranged front brackets can reduce the obstruction between the two bus chambers, thereby facilitating the connection and installation of the pipe bus.

Description

Technical Field

[0001] The invention belongs to the technical field of switch cabinets, and in particular relates to a special-shaped hard busbar, a switch cabinet and an installation method. Background Art

[0002] In the field of switchgear, switchgear often needs to be connected in parallel during installation. Generally, busbars are used for connection. However, when the phase spacing between two parallel switchgears is too small, it is easy to cause discharge and explosion through busbar connection. Therefore, they are connected to each other through flexible cables. In order to achieve the connection effect, the cables often need to be extended and bent, which leads to excessive length of the connected cables, resulting in greater power loss during power transmission. At the same time, after the cables are bent, the bending parts are subjected to bending pressure, and the integrity of the pipeline is damaged. In the high-voltage switchgear, frequent and long-term high-voltage currents pass through, especially at the bending parts, which are very likely to cause power risks, including cable bulging and bursting, thus leading to safety accidents.

[0003] At the same time, when installing the busbar in the existing switch cabinet, it is necessary to dismantle the inner wall of one side of the busbar chamber so that the busbar can pass through the two busbar chambers to complete the connection; however, the length of the existing busbar is generally longer than the width of one busbar chamber. Therefore, after the two switch cabinets are connected, the bracket between the two busbar chambers will block the installation of the busbar, and the cabinet door between the two cabinets will also have a blocking effect, and at the same time will limit the activity space of the staff, making it inconvenient for the staff to install the busbar. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a special-shaped rigid busbar, a switch cabinet and an installation method, which can prevent the bending part of the tubular busbar from being damaged by pressure and reduce the occurrence of safety accidents; at the same time, the setting of the switch cabinet can disassemble the front bracket, making the busbar more convenient to install.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a special-shaped hard busbar, including a conductive copper core, characterized in that the conductive copper core includes a bending portion and a middle portion, and the bending portion and the middle portion are cast as one piece; an insulating layer is provided on the outside of the conductive copper core, and the insulating layer is directly wrapped on the outside of the conductive copper core through an extrusion process; conductive rubber is wrapped between the insulating layer and the conductive copper core.

[0006] The present invention is further configured such that the bending portion is U-shaped and its cross-sectional diameter is the same as that of the middle portion.

[0007] The present invention is further configured such that connectors are provided at both ends of the conductive copper core.

[0008] A switch cabinet, wherein the connection between the switch cabinets is connected by a hard busbar; it comprises a cabinet body, a busbar chamber is arranged on the cabinet body, the busbar chamber comprises an upper beam and partitions slidably arranged on both sides of the busbar chamber, and the partitions are connected to the busbar chamber by bolts; the upper beam is horizontally arranged in the cabinet body and is provided with a slide groove at one end, a support rod is slidably connected in the slide groove, and a socket matched with the support rod is arranged at the other end of the upper beam; it also comprises a pair of front brackets arranged at the opening of the busbar chamber, a pair of the front brackets are respectively located below the socket and the slide groove and both ends of the front brackets are elastically connected with latches, and the latches comprise an upper latch and a lower latch; a connecting device is arranged between the latch on the latch and the support rod, and a pair of the connecting devices are respectively located in the socket and the slide groove; a cabinet door is also hinged on the front bracket located below the socket, and a driving device for controlling the horizontal movement of the support rod is also arranged on the upper beam.

[0009] The present invention is further configured such that the connecting device includes a fixing hole that is plugged into and cooperates with the upper pin, a pair of the fixing holes are respectively connected to the slide groove and the plug hole, and a pushing rod that is slidably connected to the support rod is provided in the fixing hole, and an inclined surface is provided at one end of the pushing rod away from the fixing hole.

[0010] The present invention is further configured such that a fixing device is provided between the lower latch and the bottom of the busbar chamber; the fixing device includes a locking hole provided at the bottom of the busbar chamber and plugged into and matched with the lower latch, a fixing pin perpendicular to the lower latch is slidably connected in the locking hole, the fixing pin abuts against the lower latch, and the abutting surfaces are arranged in an inclined surface; one end of the fixing pin away from the locking hole passes through the cabinet and is rotatably connected to a rotating cap threadedly connected to the cabinet.

[0011] The present invention is further configured such that the driving device includes a driven gear rotatably connected to the slide groove, and the driven gear is threadedly connected to the support rod; it also includes a driving gear meshing with the driven gear, the driving gear is rotatably set on the inner wall of the slide groove and is penetrated by a connecting hole, and the connecting hole is concentrically set with the driving gear.

[0012] The present invention is further configured such that a linkage plate is slidably provided on one side of the cabinet door away from the hinge, a linkage groove is protruded on one side of the cabinet door close to the hinge and is plugged into and cooperated with the linkage plate, and a pair of front brackets are provided with limiting protrusions at the same height as the linkage plate and the linkage groove.

[0013] The present invention is further configured such that the linkage plate is formed by hingedly connecting two plates, and when two switch cabinets are connected in parallel, the hinged portion is located between two adjacent front brackets.

[0014] An installation method, comprising any of the switch cabinets described above, comprises the following steps:

[0015] A. Measure and calculate the center distance of the two switch cabinets after they are connected, and then make the tube busbar;

[0016] B. Align the two switch cabinets and connect them with bolts to fix the two switch cabinets;

[0017] C. Turn the driving gear to move the support rod of one switch cabinet toward the socket of another switch cabinet, thereby unlocking the upper latches of the adjacent front brackets of the two switch cabinets, and then control the fixing pin to unlock the lower latch; then the two cabinet doors and the front bracket between the two cabinet doors are linked through the linkage plate, and finally the cabinet doors are opened and the front bracket between the two switch cabinets moves together with the cabinet doors;

[0018] D. Remove the two adjacent partitions between the two busbar chambers to make the two busbar chambers connected;

[0019] E. Connect the connectors on both ends of the tube busbar to the busbar compartment, and then insert the partition back to complete the cabinet connection.

[0020] In summary, the beneficial effects of the present invention are:

[0021] 1. Compared with the prior art, the conductive copper core inside the tubular bus produced by the present invention is integrally arranged. By measuring the distance between the switch cabinets and calculating the bending point before production and then making the corresponding mold, it is finally ensured that the produced conductive copper core is cast in one piece, thereby avoiding the bending of the busbar, avoiding the bending part from being subjected to stress distortion and causing the insulation layer to crack, and avoiding the integrity of the pipeline from being damaged; ensuring that the thickness of the bending part and the middle part are consistent, so that the electrical passage is stable and more in line with the requirements of electrical connection; and the insulating layer of the entire tubular bus is made of plastic, and the original flexible connection of the cable is changed to a rigid connection, thereby improving the strength of the product.

[0022] 2. The front bracket set on the switch cabinet is detachably connected to the busbar chamber, and the two adjacent front brackets and the two cabinet doors can be locked and connected with each other through the linkage plate after the two switch cabinets are connected together, so that after the cabinet door is opened, the two adjacent front brackets can be separated from the busbar chamber together with the cabinet door, so that after the partition is removed, the two busbar chambers can be connected with each other without any obstacles; ensuring that when installing the tube busbar, the entire tube busbar can be easily placed in the two busbar chambers for installation; at the same time, the removal of the front bracket increases the activity space of the staff and facilitates the installation of the busbar by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front structural diagram of the switch cabinet of this embodiment.

[0024] Figure 2 Schematic diagram of the structure of the tube busbar in this embodiment.

[0025] Figure 3 It is a cross-sectional structural diagram of the tube busbar of this embodiment.

[0026] Figure 4 It is a partial cross-sectional view of the busbar chamber of this embodiment.

[0027] Figure 5 Schematic diagram of the connection of the latch in this embodiment.

[0028] Figure 6 Schematic diagram of the connection of the lower latch of this embodiment.

[0029] Figure 7 It is a schematic diagram of the side structure of the fixing device of this embodiment.

[0030] Figure 8 It is a schematic diagram of the busbar room connection after the switch cabinets in this embodiment are connected.

[0031] Fig. 9 It is an enlarged view of the driving device of this embodiment.

[0032] Fig.10 It is a schematic diagram of the state after the two busbar chamber cabinet doors of this embodiment are opened.

[0033] Fig.11 It is a schematic diagram of the structure of the busbar room after the tubular busbar of this embodiment is installed.

[0034] Figure markings: 1-conductive copper core; 101-bending part; 102-middle part; 2-insulating layer; 3-conductive rubber; 4-connector; 5-cabinet; 6-busbar chamber; 601-upper beam; 602-partition; 603-support rod; 604-socket; 605-front bracket; 606-pin; 616-upper pin; 626-lower pin; 7-connecting device; 701-fixing hole; 702-pushing rod; 8-driving device; 801-driven gear; 802-driving gear; 803-connecting hole; 9-fixing device; 901-locking hole; 902-fixing pin; 903-rotating cap; 10-cabinet door; 11-linkage plate; 12-linkage groove; 13-limiting protrusion. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0036] like Figure 1-3A special-shaped rigid busbar is shown, comprising a conductive copper core 1, wherein the conductive copper core 1 comprises a bending portion 101 and a middle portion 102, wherein the bending portion 101 and the middle portion 102 are integrally cast; an insulating layer 2 is disposed outside the conductive copper core 1, wherein the insulating layer 2 is directly wrapped around the outside of the conductive copper core 1 by an extrusion process; a conductive rubber 3 is wrapped between the insulating layer 2 and the conductive copper core 1; the bending portion 101 is U-shaped and its cross-sectional diameter is the same as that of the middle portion 102; connectors 4 are disposed at both ends of the conductive copper core 1;

[0037] Through the pre-measured connection size, the design of the conductive copper core 1 and the outer insulating layer 2 is adopted, and the conductive rubber 3 is arranged in the middle layer for shielding insulation, which has the electromagnetic shielding effect that the existing technology cable does not have; at the same time, the entire tube bus adopts a customized size, and after measuring the distance between the two switch cabinets after the cabinet is connected, the bending position and the bending angle of the tube bus are obtained by computer assistance, and then the corresponding mold is made, and finally the conductive copper core 1 is cast so that the bending part 101 and the middle part 102 are integrally formed, thereby reducing the connection length, saving space, and avoiding the problem that the cable needs to be extended when the cable is bent at a large angle to overcome the bending difficulty;

[0038] At the same time, the insulating layer 3 of the tube busbar is made of plastic, thereby replacing the flexible conductor of the cable with a rigid conductor, thereby improving the strength of the product; and it can be standardized according to the specific installation port of the switch cabinet, ignoring the space distance between cabinets, and adapting to the small product scene setting to the greatest extent;

[0039] The bending part is formed by casting, so that all bending angles can be kept consistent, beautifying the line space for the switch cabinet and cabinet installation.

[0040] like Figure 4-11 A switch cabinet shown in the figure, wherein the switch cabinets are connected via a hard bus tie; comprising a cabinet body 5, wherein a busbar chamber 6 is provided on the cabinet body 5, wherein the busbar chamber 6 comprises an upper beam 601 and partitions 602 slidably provided on both sides of the busbar chamber 6, wherein the partitions 601 are connected to the busbar chamber 6 via bolts; Fig.10 As shown, when two switch cabinets need to be connected together, when installing the busbar, first remove the two adjacent front brackets 605, then remove the bolts between the partition 601 and the busbar chamber, and finally separate the partition from the busbar chamber so that the two busbar chambers can be connected to each other; the partition slidably arranged in the busbar chamber 6 can still be limited by the busbar chamber after the bolts are removed, thereby avoiding the partition from being offset and loose when the bolts are removed, making it difficult to remove the bolts; at the same time, it facilitates the installation of the partition.

[0041] The upper beam 601 is horizontally arranged in the cabinet 5 and is provided with a slide groove at one end, a support rod 603 is slidably connected in the slide groove, a limit block is provided on the support rod 603, and a limit groove matching the limit block is provided in the slide groove; a socket 604 matching the support rod 603 is provided at the other end of the upper beam 601; it also includes a pair of front brackets 605 arranged at the opening of the busbar chamber 6, a pair of the front brackets 605 are respectively located below the socket 604 and the slide groove and both ends of the front brackets 605 are elastically connected with a latch 606, the latch 606 includes an upper latch 616 and a lower latch 626; a latch is provided between the upper latch 616 and the support rod 603 A connecting device 7 is provided, and a pair of the connecting devices 7 are respectively located in the insertion hole 604 and the slide groove; a cabinet door 10 is also hinged on the front bracket 605 located below the insertion hole 604, and a driving device 8 for controlling the horizontal movement of the support rod 603 is also provided on the upper beam 601; the driving device 8 includes a driven gear 801 rotatably connected to the slide groove, and the driven gear 801 is threadedly connected to the support rod 603; and also includes a driving gear 802 meshing with the driven gear 801, the driving gear 802 is rotatably set on the inner wall of the slide groove and is penetrated by a connecting hole 803, and the connecting hole 803 is concentrically set with the driving gear 802;

[0042] like Figure 4 , 5 As shown in Figures 8 and 9, when it is necessary to disassemble the two adjacent front brackets 605 after merging the cabinets, the staff first connects the two front brackets 605 with the driving gear 802 through the connecting hole 803 through a connecting rod, and then rotates the driving gear 802 clockwise. The driving gear 802 will drive the driven gear 801 to rotate, and the rotating driven gear 801 is threadedly connected to the support rod 603, and the support rod 603 is slidably connected to the slide groove. Therefore, when the driven gear 801 rotates, the support rod 603 will move toward the socket 604 of the other switch cabinet. During this process, the support rod 603 will drive the connecting device located in the slide groove and the socket 604, so that the upper pin 616 will be driven to separate from the fixing hole 701; finally, the upper pin of the front bracket 605 is detached; at the same time, the support rod will connect the two adjacent upper beams 601, thereby supporting the pressure.

[0043] like Figure 4-5 As shown, an empty slot is provided at the bottom of the front end of the support rod 603. When the empty slot passes through the push rod 702, the push rod 702 and the support rod 603 do not collide with each other, so the push rod 702 will not be driven. At this time, the front end of the support rod 603 is located outside the slide slot, so that when the switch cabinets are combined, the support rod 603 and the socket 604 cooperate to play an alignment role, which facilitates the alignment between the two switch cabinets.

[0044] like Figure 4 , 6, 7, a fixing device 9 is provided between the lower latch 626 and the bottom of the busbar chamber 6; the fixing device 9 includes a locking hole 901 provided at the bottom of the busbar chamber 6 and plugged with the lower latch 626, a fixing pin 902 perpendicular to the lower latch 626 is slidably connected in the locking hole 901, the fixing pin 902 abuts against the lower latch 626, and the abutting surface is provided in an inclined surface; one end of the fixing pin 902 away from the locking hole 901 passes through the cabinet 5 and is rotatably connected to a rotating cap 903 threadedly connected to the cabinet 5;

[0045] After the upper latch 616 is separated from the upper beam 601, the rotating cap 903 is rotated counterclockwise. The middle of the rotating cap 903 is connected to a fixing pin 902 located in the locking hole 901. The fixing pin 902 moves toward the locking hole 901 under the drive of the rotating cap 903, so that the fixing pin 902 will abut against the bottom surface of the lower latch 626 and drive the lower latch 626 to move upward. After the highest point of the inclined surface of the lower latch 626 is separated from the locking hole 901, when the front bracket is separated, the lower latch 626 will be driven upward to complete the separation of the cabinet 5; finally, the two adjacent front brackets can be disassembled, thereby reducing the obstruction in the middle when installing the busbar.

[0046] The connecting device 7 includes a fixing hole 701 that is plugged into the upper pin 616. A pair of the fixing holes 701 are respectively connected to the slide groove and the plug hole 604, and a push rod 702 that is slidably connected to the support rod 603 is provided in the fixing hole 701. The push rod 702 is provided with an inclined surface at one end away from the fixing hole 701.

[0047] like Figure 8 , 10As shown in Figures 1 and 11, a linkage plate 11 is slidably provided on one side of the cabinet door 10 away from the hinge, and a linkage groove 12 is formed on a protrusion on one side of the cabinet door close to the hinge, which is plugged into and matched with the linkage plate 11. A pair of front brackets 605 are provided with limiting convex rods 13 at the same height as the linkage plate 11 and the linkage groove 12; when the busbar room needs to be connected after two switch cabinets are connected, the linkage plate 11 on one of the cabinet doors 10 is pushed toward the linkage groove 12 on the other cabinet door, and limiting convex rods 13 located on two adjacent front brackets 605 are also provided between the linkage plate 11 and the linkage groove 12, and the linkage plate 11 will pass through The two limiting protrusions 13 are used to plug and lock the two front brackets 605. At this time, when the cabinet door is opened, the linkage of the two cabinet doors is realized, so that the two cabinet doors 10 can be opened at the same time, and the two front brackets 605 are connected to the cabinet door 10; therefore, the activity space of the busbar room can be increased after opening, which facilitates the removal of the partition and the installation of the busbar; the linkage plate 11 is formed by two hinged plates, and when two switch cabinets are connected together, the hinge is located between the two adjacent front brackets 605; in this way, the two connected cabinet doors can also be folded against each other, thereby reducing the occupied space after the cabinet doors are opened.

[0048] An installation method, comprising any of the switch cabinets described above, comprises the following steps:

[0049] A. Measure and calculate the center distance of the two switch cabinets after they are connected, and then make the busbar; Fig.11 As shown, when measuring the distance between two switch cabinets, first measure and calculate the center distance of the connecting sockets between the two busbar chambers; then record the data and draw the bending point and bending angle of the tubular busbar with the aid of computer, and use them to make a mold; then after the mold is made, the conductive copper core of the tubular busbar is cast and wrapped with conductive rubber and an insulating layer to complete the production of the tubular busbar.

[0050] B. Use one of the switch cabinets as the reference switch cabinet, and then use the lifting equipment to move the other switch cabinet so that the two switch cabinets are aligned and connected by bolts to achieve the connection between the two switch cabinets;

[0051] C. Turn the driving gear to move the support rod of one switch cabinet toward the socket of the other switch cabinet, thereby unlocking the upper latches of the adjacent front brackets of the two switch cabinets, and then control the fixing pin to unlock the lower latches; then the two cabinet doors and the front brackets between the two cabinet doors are linked through the linkage plate, and finally the cabinet doors are opened and the front brackets between the two switch cabinets are opened together with the cabinet doors, so that the two busbar chambers are exposed to the outside world;

[0052] D. Remove the two adjacent partitions between the two busbar chambers to make the two busbar chambers connected;

[0053] E. Connect the connectors at both ends of the one-piece tube busbar to the connecting sockets in the busbar chamber, connect the busbars of the two busbar chambers, and then install the partition back.

[0054] The tubular busbar is in a connected state when it leaves the factory. Through the above-mentioned installation method, the tubular busbar can be installed more quickly, which is convenient for the staff to install. Compared with the cables in the prior art that need to be measured, cut, and then adjusted in angle, the hard busbar of the present invention is very convenient and can be directly installed by the customer after receiving it. It is stable in installation and use compared to cables, and has high market acceptance and adoption.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A switchgear cabinet, characterized in that, the connection between the switchgear cabinets is connected by a rigid bus coupler; it includes a cabinet body (5), a busbar chamber (6) is arranged on the cabinet body (5), the busbar chamber (6) includes an upper beam (601) and partitions (602) slidably arranged on both sides of the busbar chamber (6), and the partitions (602) are connected to the busbar chamber (6) by bolts; the upper beam (601) is horizontally arranged in the cabinet body (5) and a chute is arranged at one end, a support rod (603) is slidably connected in the chute, and a jack (604) adapted to the support rod (603) is arranged at the other end of the upper beam (601); it also includes a pair of front brackets (605) arranged at the opening of the busbar chamber (6), the pair of front brackets (605) are respectively located below the jack (604) and the chute and elastic pins (606) are connected to both ends thereof, and the pin (606) includes an upper pin (616) and a lower pin (626); a connecting device (7) is arranged between the upper pin (616) and the support rod (603), and the pair of connecting devices (7) are respectively located in the jack (604) and the chute; a cabinet door (10) is also hinged on the front bracket (605) located below the jack (604), and a driving device (8) for controlling the horizontal movement of the support rod (603) is also arranged on the upper beam (601); the connecting device (7) includes fixing holes (701) inserted and matched with the upper pin (616), the pair of fixing holes (701) are respectively communicated with the chute and the jack (604), and a push rod (702) slidably connected with the support rod (603) is arranged in the fixing hole (701), and an inclined surface is arranged at one end of the push rod (702) away from the fixing hole (701); a hollow groove is arranged at the bottom of the front end of the support rod (603), when the hollow groove passes through the push rod (702), the push rod (702) does not abut against the support rod (603), and the front end of the support rod (603) is located outside the chute, so that when the switchgear cabinets are parallel-connected, the cooperation between the support rod (603) and the jack (604) can play an aligning role.

2. A switchgear cabinet according to claim 1, characterized in that, a fixing device (9) is arranged between the lower pin (626) and the bottom of the busbar chamber (6); the fixing device (9) includes a locking hole (901) arranged at the bottom of the busbar chamber (6) and inserted and matched with the lower pin (626), a fixing pin (902) perpendicular to the lower pin (626) is slidably connected in the locking hole (901), the fixing pin (902) abuts against the lower pin (626), and the abutting surface is arranged as an inclined surface; the end of the fixing pin (902) away from the locking hole (901) penetrates through the cabinet body (5) and is rotatably connected with a rotating cap (903) threadedly connected with the cabinet body (5).

3. A switchgear cabinet according to claim 1, characterized in that, The driving device (8) includes a driven gear (801) rotatably connected in the sliding groove, and the driven gear (801) is threadedly connected to the support rod (603); it further includes a driving gear (802) meshing with the driven gear (801), the driving gear (802) is rotatably arranged on the inner wall of the sliding groove and is provided with a connection hole (803) penetrating therethrough, and the connection hole (803) is concentric with the driving gear (802).

4. A switch cabinet according to claim 1, wherein, a linkage plate (11) is slidably arranged on one side of the cabinet door (10) away from the hinge, a linkage groove (12) inserted and matched with the linkage plate (11) is formed by a protrusion on one side of the cabinet door (10) close to the hinge, and a limiting convex rod (13) at the same height as the linkage plate (11) and the linkage groove (12) is arranged on a pair of the front brackets (605).

5. A switch cabinet according to claim 4, wherein, the linkage plate (11) is formed by hinging two plates, and when two switch cabinets are juxtaposed, the hinge is located between two adjacent front brackets (605).

6. A switch cabinet according to claim 1, wherein, the rigid busbar is a special-shaped rigid busbar, including a conductive copper core (1), the conductive copper core (1) includes a bent portion (101) and an intermediate portion (102), and the bent portion (101) and the intermediate portion (102) are integrally cast; an insulating layer (2) is arranged outside the conductive copper core (1), and the insulating layer (2) is directly wrapped outside the conductive copper core (1) by an extrusion process; a conductive rubber (3) is wrapped between the insulating layer (2) and the conductive copper core (1).

7. A switch cabinet according to claim 6, wherein, the bent portion (101) is U-shaped and has the same cross-sectional diameter as the intermediate portion (102).

8. A switch cabinet according to claim 6, wherein, connectors (4) are arranged at both ends of the conductive copper core (1).

9. An installation method, including any one of the switch cabinets according to claims 1-8, comprising the following steps: A. Measure and calculate the center distance of the cabinet body after two switch cabinets are juxtaposed, and then manufacture the pipe busbar; B. Align the two switch cabinets and connect them by bolts to fix the two switch cabinets; C. Rotate the driving gear to move the support rod of one switch cabinet towards the jack of the other switch cabinet, so as to unlock the upper bolt of the adjacent front brackets of the two switch cabinets, and then control the fixing bolt to unlock the lower bolt; then link the two cabinet doors and the front brackets between the two cabinet doors through the linkage plate, and finally open the cabinet doors while the front brackets between the two switch cabinets move together with the cabinet doors; D. Disassemble two adjacent partitions between the two busbar chambers to communicate the two busbar chambers; E. Connect the connectors at both ends of the pipe busbar to the busbar chamber, and then insert the partition back to complete the juxtaposition of the cabinets.

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