Connector structure of bus duct and jack box

Abstract

The utility model discloses a connector structure of bus ducts and a jack box, a connector main body is arranged at the joint of the bottom of the jack box and the end parts of two bus ducts, the connector main body comprises two shells which are symmetrically distributed front and back, and a plurality of insulating sheets are transversely inserted between the two shells. And a plugging gap is formed between every two adjacent insulating sheets, so that a bus bar in the bus duct can be inserted through the bottom of the shell, and a pin at the bottom of a plugging box can be inserted through the top of the shell. The gasket is placed on the outer side of the square nut, and the locknut is screwed on the outer side of the square nut, so that the square nut is reinforced while the gasket is opened, the fastening bolt is not prone to loosening in use, and a worker can observe the state of the gasket, so that the safety of the fastening bolt is guaranteed. Whether the locknut is loosened or not can be visually known, so that the tightness state of the fastening bolt can be known in the first time, and the early warning effect is achieved.

Description

Technical Field

[0001] The utility model specifically relates to a connector structure between a bus duct and a plug-in box. Background Art

[0002] The plug-in box is a form of busbar tapping unit. There are two types of pin forms for existing plug-in boxes of aluminum alloy busbars: one is the air type pin, specifically connecting the pin ports of the compact busbar according to the air type pattern. This method has the disadvantages of poor heat dissipation effect and restricting the overall current-carrying capacity of the busbar. The other is that the compact pins are used for loads with a current-carrying capacity of 400A and below, and the fixed connection type is used for current-carrying capacities above large current (above 400A). Among them, for the fixed connection type, a protruding interface needs to be welded on the busbar section, resulting in non-standard busbar sections and unable to achieve standard section production, and the cost is high; while for the fixed type of the plug-in box, it is impossible to insert and unplug at will, losing the advantages of the plug-in box.

[0003] In view of this, when the bus duct is operating at a large current, in order to achieve convenient insertion and extraction with the plug-in box, usually a connector is used to connect the bus duct and the plug-in box. However, the fastening bolts of the connector are very easy to loosen during use, and there are no warning measures. It is very difficult for the staff to discover in the first time and needs to be improved.

[0004] Therefore, it is very necessary to invent a connector structure between a bus duct and a plug-in box to solve the above problems. Content of the Utility Model

[0005] (I) Purpose of the Utility Model

[0006] To solve the technical problems in the background art, the utility model proposes a connector structure between a bus duct and a plug-in box. By placing a gasket outside the square nut and screwing a locknut outside the square nut, while the gasket is being expanded, the square nut is strengthened, so that the fastening bolt is not easy to loosen during use, and the staff can directly know whether the locknut has loosened by observing the state of the gasket, thus can know the tightening state of the fastening bolt in the first time and play a warning effect.

[0007] (II) Technical Solution

[0008] To achieve the above purpose, the utility model provides the following technical solution: A connector structure between a bus duct and a plug-in box, a connector main body is provided at the connection of the bottom of the plug-in box and the ends of two bus ducts. The connector main body includes two symmetrically distributed shells in the front and back, and a plurality of insulating sheets are horizontally inserted between the two shells. An insertion gap is formed between every two adjacent insulating sheets, which can be used for the busbar in the bus duct to be inserted through the bottom of the shell and for the pins at the bottom of the plug-in box to be inserted through the top of the shell.

[0009] The fastening bolt longitudinally penetrates through the two housings, and a square nut is installed at the end of its threaded section to cooperate with the fastening bolt to complete the assembly of the busway and the plug-in box;

[0010] The locknut is arranged on the outside of the square nut, and a gasket is placed between the locknut and the square nut.

[0011] Preferably, the connector body further includes:

[0012] The annular plate is installed on the outer side wall of each housing, and the periphery of the end of the annular plate away from the housing is bent inward to form a sealing edge for accommodating the fastening bolt, and an elastic sheet is further arranged inside the annular plate.

[0013] Preferably, between the insulating sheets and between the insulating sheet and the housing, baffles are inserted, the fastening bolt penetrates through the baffles, and aluminum alloy sheets are installed on the rear side of the insulating sheet at the frontmost side and on the front and rear sides of the remaining insulating sheets.

[0014] Preferably, the plug-in box includes a box body, and

[0015] a plurality of pins arranged at the bottom of the box body and adapted to the insertion gap;

[0016] The plexiglass plate is installed on the bottom side wall of the box body and above the pins;

[0017] The cross-door grounding cable connected to the box body and the box door, and the insulating cover plate installed on the top of the side wall of the box body.

[0018] Preferably, a low-voltage cross-linked sleeve is further arranged inside the box body to protect the copper wire or copper busbar inside the box body, and an insulating buckle box is installed at the end of the low-voltage cross-linked sleeve.

[0019] Preferably, the busway includes a bus housing and a plurality of busbars arranged inside the bus housing;

[0020] A folding plate is installed on the outer side of the end of the bus housing, which can clamp the outer side wall of the housing after the busbars are inserted;

[0021] The busbars are, from the inside to the outside, the bus PE bar, the bus A bar, the bus B bar, the bus C bar, and the bus N bar. Among them, the bus PE bar is inserted between the insulating sheet at the rearmost side and the housing, and the remaining busbars are inserted in a staggered manner with the insulating sheets.

[0022] Preferably, both the left and right ends of the housing are chamfered, and the bottoms of the two housings are connected by a sealing plate.

[0023] Compared with the prior art, the beneficial effects of the above technical solutions of the present utility model are:

[0024] 1. The utility model places a gasket outside the square nut and screws a locknut outside the square nut. When the gasket is expanded, the square nut is reinforced, so that the fastening bolt is not easy to loosen during use;

[0025] 2. The utility model places a gasket between the locknut and the square nut. The staff can directly know whether the locknut is loose by observing the state of the gasket, so as to know the tightening state of the fastening bolt in the first time, achieving a warning effect;

[0026] 3. The utility model installs a plexiglass plate at the bottom of the box body, so that the staff can directly observe the pins, which is beneficial to troubleshooting;

[0027] 4. The utility model is provided with a cross-door grounding cable, a low-voltage cross-linked sleeve, and an insulating buckle box, making the staff safer when using the plug-in box and effectively preventing the operator from accidentally entering the live area and causing dangerous situations;

[0028] 5. The utility model adds a connector body at the pins of the plug-in box and the bus duct, which can be inserted by the bus bar of the bus duct. At the same time, the pins of the plug-in box can also be quickly inserted. After the fastening bolts are assembled or disassembled, the assembly or disassembly of the plug-in box and the bus duct can be realized, thus realizing the portable plugging and unplugging of the plug-in box and the bus duct, which is convenient for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0030] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0031] Figure 2 For the present utility model Figure 1 The enlarged view of the structure of part A;

[0032] Figure 3 It is a schematic diagram of the structure of the plug-in box of the present utility model;

[0033] Figure 4 It is a schematic diagram of the internal structure of the plug-in box of the present utility model;

[0034] Figure 5 It is a distribution diagram of the pins of the present utility model;

[0035] Figure 6 This is the distribution diagram of the plexiglass plate of the present utility model.

[0036] Explanation of reference numerals in the drawings:

[0037] 1 Plug-in box, 11 Box body, 12 Plug pins, 13 Plexiglass plate, 14 Cross-door grounding cable, 15 Insulating cover plate, 16 Low-voltage cross-linked bushing, 17 Insulating buckle box;

[0038] 2 Bus duct, 21 Bus housing, 22 Bus bar, 23 Folding plate;

[0039] 3 Connector body, 31 Housing, 32 Insulating sheet, 33 Plugging gap, 34 Fastening bolt, 35 Square nut, 36 Locknut, 37 Gasket, 38 Ring plate, 39 Sealing edge, 310 Elastic sheet, 311 Baffle plate, 312 Aluminum alloy sheet. Detailed implementation manners

[0040] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further introduced in detail below with reference to the accompanying drawings.

[0041] The present utility model provides a connector structure for a bus duct and a plug-in box as Figures 1-6 shown. A connector body 3 is provided at the connection between the bottom of the plug-in box 1 and the ends of two bus ducts 2. The connector body 3 includes two symmetrically distributed housings 31 in the front and back, and a plurality of insulating sheets 32 are horizontally inserted between the two housings 31. A plugging gap 33 is formed between every two adjacent insulating sheets 32, which can be used for the bus bar 22 in the bus duct 2 to be inserted through the bottom of the housing 31, and for the plug pins 12 at the bottom of the plug-in box 1 to be inserted through the top of the housing 31. The fastening bolt 34 longitudinally penetrates through the two housings 31, and a square nut 35 is installed at the end of its threaded section to complete the assembly of the bus duct 2 and the plug-in box 1 in cooperation with the fastening bolt 34. A locknut 36 is provided outside the square nut 35, and a gasket 37 is placed between the locknut 36 and the square nut 35.

[0042] In one embodiment, the connector body 3 further includes a ring plate 38, which is installed on the outer side wall of each housing 31, and a sealing edge 39 is formed by bending the periphery of the end of the ring plate 38 away from the housing 31 inward, which is used to accommodate the fastening bolt 34, and an elastic sheet 310 is further provided inside the ring plate 38 to improve the fastening effect of the fastening bolt 34.

[0043] In one embodiment, baffles 311 are inserted between the insulating sheets 32 and between the insulating sheet 32 and the housing 31 to ensure that the gap width of the insertion gap 33 is not affected, thereby increasing the service life of the busbar trunking 2. The fastening bolts 34 pass through the baffles 311, and aluminum alloy sheets 312 are installed on the rear side of the insulating sheet 32 at the frontmost side and on the front and rear sides of the remaining insulating sheets 32 to replace the currently used copper-aluminum composite plate, reducing the cost investment while reducing the operation risk of the composite plate, and also improving the anti-corrosion performance and overall strength of the busbar trunking 2, facilitating the use of the busbar trunking 2.

[0044] In one embodiment, the plug-in box 1 includes a box body 11 and a plurality of pins 12 provided at the bottom of the box body 11 and adapted to the insertion gap 33, an organic glass plate 13 installed on the bottom side wall of the box body 11 and above the pins 12, and the organic glass plate 13 is connected to the plug-in box 1 through a sealing strip, which can be used for workers to observe the pins 12 and troubleshoot faults. A cross-door grounding cable 14 connected to the box body 11 and the door can ensure better connectivity with the grounding point, thereby reducing the grounding resistance and forming a grounding protection, making the plug-in box 1 safer to use, and an insulating cover plate 15 installed on the top of the side wall of the box body 11. A low-voltage cross-linked bushing 16 is further provided inside the box body 11 to protect the copper wire or copper bar inside the box body 11, and an insulating buckle box 17 is installed at the end of the low-voltage cross-linked bushing 16 to prevent operators from accidentally entering the live area and causing danger.

[0045] In one embodiment, the busbar trunking 2 includes a busbar housing 21 and a plurality of busbars 22 provided inside the busbar housing 21. A folding plate 23 is installed on the outer side of the end of the busbar housing 21, which can clamp the outer side wall of the housing 31 after the busbars 22 are inserted, better adapting to the housing 31 of the connector body 3 and improving the stability of the engagement between the busbar housing 21 and the housing 31. The busbars 22 are, from the inside to the outside, a busbar PE row, a busbar A row, a busbar B row, a busbar C row, and a busbar N row. Among them, the busbar PE row is inserted between the insulating sheet 32 at the rearmost side and the housing 31, and the remaining busbars 22 are inserted in a staggered manner with the insulating sheet 32 to ensure the normal use of the busbars 22.

[0046] In one embodiment, both left and right ends of the housing 31 are chamfered, and the bottoms of the two housings 31 are connected by a sealing plate. During the process of the connector body 3 falling, it is convenient for the housing 31 to be adapted to the busbar housing 21 and ensure that the housing 31 is firmly clamped. Also, the bottoms of the two housings 31 are connected by a sealing plate (not shown in the drawings). After the connector body 3, the busbar trough 2, and the plug-in box 1 are assembled, a sealing plate is welded to the bottom of the connector body 3 or installed with fastening components such as pins, so as to protect the connection part of the three, enabling the three to be smoothly put into use after installation.

[0047] The specific implementation method is as follows: When the connector body 3 is in use, the staff first place the two busbar troughs 2 on the external support brackets and reserve the spacing required for the connector body 3. Then, the connector body 3 is placed between the two busbar troughs 2 from top to bottom, and it is ensured that the busbar PE row, busbar A row, busbar B row, busbar C row, and busbar N row are all inserted into the corresponding insertion gaps 33. That is, the busbar PE row is inserted between the insulating sheet 32 at the rearmost side and the housing 31, and the remaining busbar rows 22 are inserted in a staggered manner with the insulating sheet 32. When the housing 31 of the connector body 3 gradually falls and engages with the busbar housing 21 of the busbar trough 2, the assembly of the connector body 3 and the busbar trough 2 is completed.

[0048] Subsequently, the staff align the pins 12 of the plug-in box 1 with the insertion gaps 33, insert the pins 12 into the insertion gaps 33, and clamp them with an external fastening clip (not shown in the drawings). After checking that there is no exposed area, the assembly of the plug-in box 1 and the connector body 3 is completed.

[0049] After the staff checks and confirms that there is no error, the fastening bolt 34 is inserted from back to front, and the square nut 35 is screwed tightly at the end of the threaded section, so as to fasten the connector body 3 together. At this time, a gasket 37 is placed outside the square nut 35, and a locknut 36 is screwed tightly outside the square nut 35. While the gasket 37 is expanded, the square nut 35 is strengthened, ensuring that the square nut 35 is not easily loosened during use, thereby increasing the fastening effect of the fastening bolt 34, and thus completing the assembly of the busbar trough 2, the plug-in box 1, and the connector body 3.

[0050] Meanwhile, during long-term use in the later stage, if the locknut 36 fails and the connection with the square nut 35 becomes loose, the gasket 37 will fall off or its position will shift. By observing the state of the gasket 37, the staff can intuitively know that the locknut 36 has become loose. At this time, the staff can check the fastening bolt 34 to see if it has also become loose, so as to know the tightening state of the fastening bolt 34 in the first time, achieving a warning effect. Moreover, when the gasket 37 is tightly pressed by the square nut 35 and the locknut 36, it will deform and have threads tapped, which can be adapted to the square nut 35 and the locknut 36, compensating for the gap between the threads of the two and making their connection more tight, further improving the anti-loosening performance of the fastening bolt 34;

[0051] This embodiment specifically solves the problem in the prior art that when the busbar trunking 2 is operating at a large current, in order to achieve convenient plugging and unplugging with the plug-in box 1, usually a connector is used to connect the busbar trunking 2 and the plug-in box 1. However, the fastening bolt 34 of the connector is very easy to become loose during use, and there is no warning measure, making it difficult for the staff to find out in the first time and needing to be improved.

[0052] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A connector structure for a busbar trunking and a plug-in box. A connector body (3) is provided at the connection between the bottom of the plug-in box (1) and the ends of two busbar trunks (2). It is characterized in that: The connector body (3) includes: Two symmetrically distributed shells (31) in the front and back directions, and a plurality of insulating sheets (32) are horizontally inserted between the two shells (31). An insertion gap (33) is formed between every two adjacent insulating sheets (32), which can be used for the busbars (22) in the busway (2) to be inserted through the bottom of the shell (31), and for the bottom pins (12) of the plug-in box (1) to be inserted through the top of the shell (31); A fastening bolt (34) longitudinally penetrates the two shells (31), and a square nut (35) is installed at the end of its threaded section to complete the assembly of the busway (2) and the plug-in box (1) in cooperation with the fastening bolt (34); A locknut (36) is arranged outside the square nut (35), and a gasket (37) is placed between the locknut (36) and the square nut (35).

2. The connector structure of a busbar trunking and a plug-in box according to claim 1, characterized in that: The connector body (3) further includes: An annular plate (38) is installed on the outer side wall of each shell (31), and the periphery of one end of the annular plate (38) away from the shell (31) is bent inward to form a sealing edge (39) for accommodating the fastening bolt (34), and an elastic sheet (310) is also arranged inside the annular plate (38).

3. The connector structure of a busbar trunking and a plug-in box according to claim 1, wherein: A baffle (311) is inserted between the insulating sheets (32) and between the insulating sheet (32) and the shell (31). The fastening bolt (34) penetrates through the baffle (311), and aluminum alloy sheets (312) are installed on the rear side of the insulating sheet (32) at the frontmost side and on the front and rear sides of the remaining insulating sheets (32).

4. A connector structure for a busbar trunking and a plug-in box according to claim 1, characterized in that: The plug-in box (1) includes a box body (11), and A plurality of pins (12) arranged at the bottom of the box body (11) and adapted to the insertion gap (33); An organic glass plate (13) installed on the bottom side wall of the box body (11) and above the pins (12); A cross-door grounding cable (14) connected to the box body (11) and the box door, and an insulating cover plate (15) installed on the top of the side wall of the box body (11).

5. A connector structure for a busbar trunking and a plug-in box according to claim 4, characterized in that: A low-voltage cross-linked sleeve (16) is further arranged inside the box body (11) to protect the copper wires or copper bars inside the box body (11), and an insulating buckle box (17) is installed at the end of the low-voltage cross-linked sleeve (16).

6. The connector structure of a busbar trunking and a plug-in box according to claim 1, characterized in that: The busway (2) includes a bus shell (21), and A folding plate (23) is installed on the outer side of the end of the bus shell (21), which can clamp the outer side wall of the shell (31) after the busbars (22) are inserted; The busbars (22) are, from the inside to the outside, a bus PE bar, a bus A bar, a bus B bar, a bus C bar, and a bus N bar. Among them, the bus PE bar is inserted between the insulating sheet (32) at the rearmost side and the shell (31), and the remaining busbars (22) are inserted in a staggered manner with the insulating sheets (32).

7. A connector structure for a busbar trunking and a plug-in box according to claim 1, characterized in that: Both the left and right ends of the shell (31) are chamfered, and the bottoms of the two shells (31) are connected by a sealing plate.

Images