Connecting structure of bus duct and branch box

Abstract

The utility model relates to the technical field of bus ducts, in particular to a connecting structure of a bus duct and a branch box, which comprises a duct body and a box body arranged on the duct body, and the duct body and the box body are connected and fixed through a fixing assembly. Wherein a channel is communicated between the groove body and the box body, each conductive piece of the groove body extends upwards to form an extending piece, and the extending pieces enter the inner side of the box body along the channel. The bending part is used for ensuring that the positions of the connecting holes in the bending part are in one-to-one linear correspondence with the wiring ends on the short-circuiting device, so that the straight bar can be linearly connected between the bending part and the short-circuiting device when the straight bar is connected, excellent over-current capability can be ensured, the problem that the straight bar is damaged due to poor over-current caused by conventional twisted connection of the straight bar is avoided, and the service life of the straight bar is prolonged. And the connection and power connection stability between the bus duct and the branch box is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bus ducts, in particular to a connection structure between a bus duct and a branch box. Background Art

[0002] Bus duct is a new circuit arrangement method. It uses copper or aluminum as conductor, supported by non-olefinic insulation, and then installed in a metal trough to form a new type of conductor. The tap unit of the bus duct refers to the switch cabinet or tap box that is connected to the bypass of the bus duct junction.

[0003] Currently, when connecting a bus duct to a junction box, power is drawn from the bus duct and connected to the circuit breaker in the junction box using a socket connection. For example, Chinese patent publication No. "CN117856133A" discloses an intelligent intensive bus duct plug-in box.

[0004] However, the plug-in column structure generally provided in the current branch box is used to connect the conductive parts of the bus duct, and the plug-in column is then connected to the circuit breaker through the straight line to achieve circuit conduction. However, since the position of the plug-in column is fixed, it is difficult for the plug-in column to maintain a straight position with the connection terminal of the circuit breaker. This causes the straight line to be twisted at a large angle when connecting the straight line. The twisted straight line has poor current carrying capacity, thus affecting its service life. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that it is difficult for the plug-in column to maintain a straight position with the terminal of the short-circuit breaker, which leads to large-angle twisting of the straight-line when connecting the straight-line busbars, and to propose a connection structure between the busbar duct and the branch box.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A connection structure between a bus duct and a junction box is designed, comprising a duct body and a box body mounted on the duct body, wherein the duct body and the box body are connected and fixed by a fixing assembly;

[0008] A channel is connected between the slot body and the box body, and an extension piece extends upward from each conductive part of the slot body. The extension piece enters the inner side of the box body along the channel. The end of the extension piece has a bending portion. A short-circuit device is placed inside the box body, and the bending portion has a connection hole that is straight-line opposite to the short-circuit device terminal.

[0009] Furthermore, four extension pieces are provided, wherein the bending portions of two of the extension pieces are bent toward one side, and the bending portions of the other two extension pieces are bent toward the other side.

[0010] Furthermore, the first and third extension pieces from left to right have the same height, and the second and fourth extension pieces have the same height;

[0011] The height of the second extension piece is greater than the height of the first extension piece.

[0012] Furthermore, the fixing assembly includes four connecting columns distributed in a matrix below the box body, the edge of the box body has holes adapted to the connecting columns, and at least one positioning glass bead is embedded on the outer side of the bottom of the connecting column.

[0013] Furthermore, the connecting column includes a fixing column and a threaded column threadedly connected to the fixing column, and the positioning glass bead is installed on the outside of the threaded column.

[0014] Furthermore, a sealing ring and an auxiliary gasket are placed between the trough body and the box body, and the sealing ring is sleeved on the outside of the channel.

[0015] The utility model proposes a connection structure between a bus duct and a junction box, which has the beneficial effect that: in the utility model, according to the model of the short-circuit breaker, when processing the bus duct, its conductive parts can be adaptively designed to ensure that the position of the connection hole on the bent portion corresponds to the connection terminal on the short-circuit breaker in a straight line. In this way, when connecting the straight-line busbar, the straight-line busbar can be connected in a straight line between the bent portion and the short-circuit breaker, thereby ensuring excellent overcurrent capacity and avoiding the problem of twisted connection of the traditional straight-line busbar, which causes poor overcurrent and affects the damage of the straight-line busbar. The overall structural design is simple, which effectively improves the connection between the bus duct and the junction box and the power connection stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the channel structure of the present utility model;

[0018] Figure 3 This is a schematic diagram of the extension piece structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the fixing component structure of the present utility model.

[0020] In the figure: 1. trough body; 11. conductive part; 12. extension piece; 13. bending part; 14. connection hole; 2. box body; 3. fixing assembly; 31. connecting column; 311. fixing column; 312. threaded column; 32. positioning glass bead; 4. channel; 5. short-circuit device; 6. sealing ring; 7. auxiliary pad. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figure 1-4 This is an embodiment of the present invention, which discloses a connection structure between a bus duct and a branch box. This connection structure is used to solve the problem that when the bus duct is currently connected to the decomposition box, the connection column is fixed in position, which causes a large angle distortion of the straight line when connecting the circuit breaker via the straight line. Specifically, the connection structure includes a trough body 1 and a box body 2 mounted on the trough body 1. The trough body 1 and the box body 2 are connected and fixed by a fixing assembly 3.

[0023] A channel 4 is connected between the slot body 1 and the box body 2. An extension piece 12 extends upward from each conductive part 11 of the slot body 1. The extension piece 12 enters the inner side of the box body 2 along the channel 4. The end of the extension piece 12 has a bent portion 13. A short-circuit breaker 5 is placed inside the box body 2. The bent portion 13 has a connection hole 14 that is straightly opposite to the terminal of the short-circuit breaker 5.

[0024] Specifically, in this embodiment, there are four extension pieces 12, that is, there are four conductive parts 11 in this embodiment, which can be used to connect power to phases A, B, C and N, wherein the bending portions 13 of two of the extension pieces 12 are bent toward one side, and the bending portions 13 of the other two extension pieces 12 are bent toward the other side.

[0025] Based on the above embodiment, in this embodiment, the first and third extension pieces 12 from left to right have the same height, and the second and fourth extension pieces 12 have the same height;

[0026] The height of the second extension piece 12 is greater than the height of the first extension piece 12, that is, the heights of the four extension pieces 12 in this embodiment are staggered. The purpose of adopting this height difference structure design is to facilitate wiring, so as to ensure that the straight rows will not contact each other after wiring, thereby ensuring the stability of power connection. Although the height difference of the extension piece 12 will affect the straightness of the straight row within a certain range, since the connection hole 14 on the extension piece 12 is in a straight line corresponding to the wiring terminal of the short-circuit 5, it will not cause a large bending of the extension piece 12. Therefore, compared with the installation method in the prior art, it can still effectively improve the current capacity of the straight row.

[0027] On the basis of the above embodiment, the fixing component 3 in this embodiment includes four connecting columns 31 distributed in a matrix under the box body 2, and the edge of the box body 2 has holes adapted to the connecting columns 31. At least one positioning glass bead 32 is embedded on the outer side of the bottom of the connecting column 31, and the positioning glass bead 32 is stopped at the bottom of the edge of the box body 2. That is, in this embodiment, the connection of the box body 2 is achieved by plugging the four connecting columns 31 into the side of the box body 2. The installation and disassembly method is convenient, and the assembly efficiency is effectively improved.

[0028] In addition, in order to achieve the contact force between the positioning glass bead 32 and the bottom edge of the box body 2, the connecting column 31 in this embodiment includes a fixed column 311 and a threaded column 312 threadedly connected to the fixed column 311. The positioning glass bead 32 is installed on the outside of the threaded column 312, that is, in this embodiment, the height of the positioning glass bead 32 can be adjusted by rotating the threaded column 312, so that the contact force between the positioning glass bead 32 and the bottom of the box body 2 can be adjusted to ensure the installation stability of the box body 2.

[0029] It should be noted that, in order to ensure the sealing of the connection between the trough body 1 and the box body 2 in this embodiment, a sealing ring 6 and an auxiliary gasket 7 are placed between the trough body 1 and the box body 2. The sealing ring 6 is sleeved on the outside of the channel 4. The sealing ring 6 and the auxiliary gasket 7 have the same height and are made of the same material, such as rubber. The auxiliary gasket 7 is designed to ensure the stability of the connection between the box body 2 and the trough body 1. In addition, the sealing ring 6 described in this embodiment is an annular part, and the auxiliary gasket 7 is a rectangular part.

[0030] In summary, in the present invention, according to the model of the short-circuit 5, when processing the bus duct, its conductive part 11 can be adaptively designed to ensure that the position of the connection hole 14 on the bending portion 13 corresponds to the connection terminal on the short-circuit 5 in a straight line. In this way, when connecting the straight-line busbar, the straight-line busbar can be connected in a straight line between the bending portion 13 and the short-circuit 5, thereby ensuring excellent overcurrent capacity and avoiding the problem of twisted connection of traditional straight-line busbars, which causes poor overcurrent and affects the damage of the straight-line busbar. The overall structural design is simple, which effectively improves the connection between the bus duct and the junction box and the power connection stability.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A connection structure between a bus duct and a junction box, comprising a duct body (1) and a box body (2) mounted on the duct body (1), characterized in that: The tank body (1) and the box body (2) are connected and fixed via a fixing assembly (3); A channel (4) is connected between the trough body (1) and the box body (2), and an extension piece (12) is extended upward from each conductive part (11) of the trough body (1). The extension piece (12) enters the inner side of the box body (2) along the channel (4). The end of the extension piece (12) has a bending portion (13). A short circuit device (5) is placed inside the box body (2), and the bending portion (13) has a connection hole (14) that is linearly opposite to the connection terminal of the short circuit device (5).

2. The connection structure of a bus duct and a branch box according to claim 1, characterized in that: Four extension pieces (12) are provided, wherein the bending portions (13) of two extension pieces (12) are bent toward one side, and the bending portions (13) of the other two extension pieces (12) are bent toward the other side.

3. The connection structure of a bus duct and a branch box according to claim 2, characterized in that: The first and third extension pieces (12) from left to right have the same height, and the second and fourth extension pieces (12) have the same height; The height of the second extension piece (12) is greater than the height of the first extension piece (12).

4. The connection structure of a bus duct and a branch box according to claim 1, characterized in that: The fixing assembly (3) comprises four connecting columns (31) distributed in a matrix below the box body (2); the edge of the box body (2) has holes adapted to the connecting columns (31); and at least one positioning glass bead (32) is embedded on the outer side of the bottom of the connecting column (31).

5. The connection structure of a bus duct and a branch box according to claim 4, characterized in that: The connecting column (31) comprises a fixing column (311) and a threaded column (312) threadedly connected to the fixing column (311), and the positioning glass bead (32) is installed on the outside of the threaded column (312).

6. The connection structure of a bus duct and a branch box according to claim 4, characterized in that: A sealing ring (6) and an auxiliary gasket (7) are also placed between the trough body (1) and the box body (2), and the sealing ring (6) is sleeved on the outside of the channel (4).

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