Intelligent cable intermediate joint explosion-proof box

Abstract

The invention discloses an intelligent cable intermediate joint explosion-proof box which comprises a first explosion-proof box, a second explosion-proof box, a lower fixing plate and an upper fixing plate, the two ends of the first explosion-proof box and the two ends of the second explosion-proof box are open, one end of the first explosion-proof box is provided with an arc-shaped flange, one end of the second explosion-proof box is correspondingly provided with an arc-shaped groove, and the arc-shaped flange is provided with an arc-shaped groove. The arc-shaped flange is connected with the arc-shaped groove in an inserted mode, the lower fixing plate is located below the connecting position of the arc-shaped flange and the arc-shaped groove, the upper fixing plate is located above the connecting position of the arc-shaped flange and the arc-shaped groove, the bottom of the first anti-explosion box and the bottom of the second anti-explosion box are each provided with a pair of clamping grooves, and the lower fixing plate is provided with clamping blocks corresponding to the clamping grooves. The upper fixing plate is buckled with the lower fixing plate, an observation opening is formed in the upper fixing plate, and a cover plate is hinged to the upper fixing plate. The explosion-proof box has the advantage that the interior of the explosion-proof box can be conveniently checked and maintained.

Description

Technical Field

[0001] The invention belongs to the technical field of cable joint explosion-proof boxes, and in particular relates to an intelligent cable intermediate joint explosion-proof box. Background Art

[0002] The common explosion-proof boxes for connectors on the market are mostly connected by bolts or sealed by resin casting to provide explosion-proof and protection for the connector cables.

[0003] However, there are some problems in the prior art: since the inside of the poured and sealed explosion-proof box is filled with glue, it is not convenient to open it for maintenance later; and for the explosion-proof wiring box connected by bolts, when inspecting the inside of the explosion-proof wiring box, it is necessary to remove the bolts from the threaded holes and remove the explosion-proof wiring box cover. When disassembling and installing, it is necessary to use tools to continuously rotate the bolts. It takes a long time to disassemble and install the explosion-proof wiring box cover, which is not convenient for quick removal of the explosion-proof wiring box cover, and thus it is not convenient for regular inspection and maintenance of the internal parts of the explosion-proof wiring box. Therefore, we propose an intelligent cable intermediate joint explosion-proof box. Summary of the invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide an intelligent cable intermediate joint explosion-proof box, by adding structures such as an observation port, a cover plate, a limit hole, a limit pin, etc., so that the cover plate can be opened to facilitate observation of the situation inside the explosion-proof box.

[0005] The present invention is implemented in this way. An intelligent cable intermediate joint explosion-proof box includes a first explosion-proof box, a second explosion-proof box, a lower fixed plate and an upper fixed plate. The first explosion-proof box and the second explosion-proof box are both opened at both ends. An arc-shaped flange is provided at one end of the first explosion-proof box, and an arc-shaped groove is correspondingly provided at one end of the second explosion-proof box. The arc-shaped flange is plugged into the arc-shaped groove. The lower fixed plate is located below the connection between the arc-shaped flange and the arc-shaped groove, and the upper fixed plate is located above the connection between the arc-shaped flange and the arc-shaped groove. A pair of card slots are provided at the bottom of the first explosion-proof box and the second explosion-proof box, and a card block corresponding to the card slot is provided on the lower fixed plate. The upper fixed plate is buckled with the lower fixed plate, an observation port is provided on the upper fixed plate, and a cover plate is hinged on the upper fixed plate.

[0006] Optionally, a sliding groove is provided on the upper fixed plate, a limit pin is slidably connected in the sliding groove, a shift block is fixedly connected to the limit pin, a spring is provided in the sliding groove, one end of the spring is fixedly connected to the limit pin, and the other end of the spring is fixedly connected to the sliding groove, a limit hole is correspondingly provided on the side of the cover plate, and the limit pin and the limit hole are slidably connected.

[0007] Optionally, the other ends of the first explosion-proof box and the second explosion-proof box are both threadedly connected with sealing caps, and a sealing rubber ring is fixedly connected inside the sealing caps.

[0008] Optionally, an annular groove is formed on the first explosion-proof box and the second explosion-proof box, annular sealing rings are sleeved in the two annular grooves, and the lower fixing plate and the upper fixing plate are in pressure contact with the annular sealing rings.

[0009] Optionally, felt rings are provided inside the first explosion-proof box and the second explosion-proof box, and limiting rings are fixedly connected inside the first explosion-proof box and the second explosion-proof box, and the inner diameter of the limiting ring is smaller than the felt ring.

[0010] Optionally, a rectangular sealing ring is fixedly connected to the inner side of the cover plate, a rectangular sealing groove is correspondingly opened on the upper fixed plate, and the rectangular sealing ring is in pressure contact with the rectangular sealing groove.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. By adding observation ports, cover plates, limit assembly and other structures on the upper fixed plate, when it is necessary to inspect and maintain it, you only need to pull the shift block, and the shift block will drive the limit pin to disengage from the limit hole to open the cover plate, so as to facilitate the inspection and maintenance of the interior of the explosion-proof box.

[0012] 2. By threading sealing caps at both ends of the first explosion-proof box and the second explosion-proof box, sealing rubber rings, felt rings and other structures are arranged inside the explosion-proof box, annular grooves and annular sealing rings are opened on the outside of the explosion-proof box, and a rectangular sealing ring is arranged between the cover plate and the upper fixed plate to seal the interior of the explosion-proof box to prevent water vapor from entering the interior of the explosion-proof box, which is more practical.

[0013] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure provided by the present invention; Figure 2 It is an exploded view of the overall structure provided by the present invention; Figure 3 It is an exploded cutaway view of the overall structure provided by the present invention; Figure 4 The present invention provides Figure 3 A magnified view of part A in FIG. Figure 5 It is an enlarged structural diagram of the upper fixing plate provided by the present invention; Figure 6 The present invention provides Figure 5 Enlarged view of part B in .

[0015] In the figure: 1. first explosion-proof box; 11. arc-shaped flange; 2. second explosion-proof box; 21. arc-shaped groove; 22. annular groove; 23. annular sealing ring; 24. clamping groove; 25. limiting ring; 26. felt ring; 3. sealing cap; 31. sealing rubber ring; 4. lower fixing plate; 41. clamping block; 5. upper fixing plate; 51. observation port; 52. rectangular sealing groove; 53. slide groove; 6. cover plate; 61. rectangular sealing ring; 62. limiting hole; 7. limiting pin; 71. shifting block; 72. spring. DETAILED DESCRIPTION

[0016] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0017] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0018] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0019] like Figures 1 to 6 As shown, an intelligent cable intermediate joint explosion-proof box provided by an embodiment of the present invention comprises a first explosion-proof box 1, a second explosion-proof box 2, a lower fixing plate 4 and an upper fixing plate 5. Both the first explosion-proof box 1 and the second explosion-proof box 2 are opened at both ends. An arc-shaped flange 11 is provided at one end of the first explosion-proof box 1, and an arc-shaped groove 21 is correspondingly provided at one end of the second explosion-proof box 2. The arc-shaped flange 11 is plugged into the arc-shaped groove 21. Usually, the explosion-proof box is connected by upper and lower buckling and screw connection. Considering that the upper and lower buckling method has a longer gap and lower sealing performance, the left and right plug-in is adopted in this embodiment, and the arc flange 11 and the arc groove 21 are respectively provided on the first explosion-proof box 1 and the second explosion-proof box 2. The connection stability is ensured by plug-in, and a certain sealing is provided for the bottom of the explosion-proof box; It should be noted here that the sealing rings in this embodiment are all made of rubber material with insulating properties; Usually, when inspecting the inside of a bolt-connected explosion-proof wiring box, the bolts need to be removed from the threaded holes and the explosion-proof wiring box cover needs to be removed. During removal and installation, tools need to be used to continuously rotate the bolts. The removal and installation of the explosion-proof wiring box cover takes a long time, making it inconvenient to quickly remove the explosion-proof wiring box cover, and further, it is inconvenient to regularly inspect and repair the internal parts of the explosion-proof wiring box.

[0020] In this embodiment, the lower fixing plate 4 is located below the connection between the arc flange 11 and the arc groove 21, the upper fixing plate 5 is located above the connection between the arc flange 11 and the arc groove 21, a pair of card slots 24 are provided at the bottom of the first explosion-proof box 1 and the second explosion-proof box 2, a card block 41 corresponding to the card slot 24 is provided on the lower fixing plate 4, the upper fixing plate 5 is buckled with the lower fixing plate 4, an observation port 51 is provided on the upper fixing plate 5, and a cover plate 6 is hinged on the upper fixing plate 5; Since the present embodiment adopts the left-right plug-in connection, the middle connection point is a weak point. When installing, the slot on the explosion-proof box is buckled on the block 41 of the lower connecting plate. The block 41 will limit the relative movement of the first explosion-proof box 1 and the second explosion-proof box 2, and the connection is stable. Then, the upper fixing plate 5 is buckled on the upper part of the lower fixing plate 4, and the fixing of the explosion-proof box is completed by screw connection; like Figure 5 and Figure 6 As shown, a slide groove 53 is provided on the upper fixed plate 5, a limit pin 7 is slidably connected in the slide groove 53, a shift block 71 is fixedly connected to the limit pin 7, a spring 72 is provided in the slide groove 53, one end of the spring 72 is fixedly connected to the limit pin 7, and the other end of the spring 72 is fixedly connected to the slide groove 53, and a limit hole 62 is correspondingly provided on the side of the cover plate 6, and the limit pin 7 is slidably connected to the limit hole 62; Therefore, during the later maintenance, it is only necessary to pull the shift block 71, which will drive the limit pin 7 to slide and compress the spring 72. The limit pin 7 can be opened after sliding out of the limit hole 62 on the cover plate 6. After the cable is inspected and maintained, the cover plate 6 is closed, and the shift block 71 is pulled to re-insert the limit pin 7 into the limit hole 62, so that the cover plate 6 can be re-fixed, thereby solving the problem that the explosion-proof box is difficult to open, resulting in inconvenience in cable inspection and maintenance; Similarly, the function of the explosion-proof box is to protect the cables and prevent them from being damaged by external factors. The sealing of all explosion-proof boxes is also particularly important.

[0021] like Figure 2 and Figure 3 The other ends of the first explosion-proof box 1 and the second explosion-proof box 2 are both threadedly connected with a sealing cap 3, a sealing rubber ring 31 is fixedly connected inside the sealing cap 3, a felt ring 26 is provided inside the first explosion-proof box 1 and the second explosion-proof box 2, and a limiting ring 25 is fixedly connected inside the first explosion-proof box 1 and the second explosion-proof box 2, and the inner diameter of the limiting ring 25 is smaller than the felt ring 26; In this embodiment, the cable needs to pass through the first explosion-proof box 1 and the second explosion-proof box 2. Therefore, a sealing rubber ring 31 is provided at the connection to prevent external factors from entering the explosion-proof box, and a felt ring 26 is provided inside. The felt ring 26 has good chemical resistance, heat insulation and fire prevention, and has good insulation properties; like Figure 1 and Figure 4As described above, the first explosion-proof box 1 and the second explosion-proof box 2 are both provided with an annular groove 22, and an annular sealing ring 23 is sleeved in the two annular grooves 22, and the lower fixing plate 4 and the upper fixing plate 5 are both pressed and contacted with the annular sealing ring 23; In this embodiment, an annular groove 22 for installing an annular sealing ring 23 is provided on the outer side of the first explosion-proof box 1 and the second explosion-proof box 2. Since the rubber has elasticity, when the lower fixing plate 4 and the upper fixing plate 5 are installed, the annular sealing ring 23 will be pressed, which can effectively reduce the gap between the upper fixing plate 4 and the lower fixing plate 5 and the explosion-proof box, thereby providing good sealing performance; Furthermore, a rectangular sealing ring 61 is fixedly connected to the inner side of the cover plate 6 , and a rectangular sealing groove 52 is correspondingly opened on the upper fixed plate 5 , and the rectangular sealing ring 61 is in pressure contact with the rectangular sealing groove 52 .

[0022] In this embodiment, the observation port 51 is arranged in a stepped shape, a rectangular sealing ring 61 is arranged on the inner side of the upper cover plate 6, and a corresponding rectangular sealing groove 52 is opened on the upper fixed plate 5, so that the cover plate 6 can also complete the sealing after closing, which is more practical.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent cable intermediate joint explosion-proof box, comprising a first explosion-proof box (1), a second explosion-proof box (2), a lower fixing plate (4) and an upper fixing plate (5), characterized in that: The first explosion-proof box (1) and the second explosion-proof box (2) are both opened at both ends. One end of the first explosion-proof box (1) is provided with an arc-shaped flange (11), and one end of the second explosion-proof box (2) is correspondingly provided with an arc-shaped groove (21). The arc-shaped flange (11) and the arc-shaped groove (21) are plugged into each other. The lower fixing plate (4) is located below the connection between the arc-shaped flange (11) and the arc-shaped groove (21), and the upper fixing plate (5) is located above the connection between the arc-shaped flange (11) and the arc-shaped groove (21). A pair of slots (24) are provided at the bottom of the first explosion-proof box (1) and the second explosion-proof box (2). A block (41) corresponding to the slots (24) is provided on the lower fixing plate (4). The upper fixing plate (5) is buckled with the lower fixing plate (4), an observation port (51) is provided on the upper fixing plate (5), and a cover plate (6) is hingedly connected to the upper fixing plate (5).

2. The intelligent cable intermediate joint explosion-proof box according to claim 1, characterized in that: The upper fixed plate (5) is provided with a sliding groove (53), a limit pin (7) is slidably connected in the sliding groove (53), a shift block (71) is fixedly connected to the limit pin (7), a spring (72) is provided in the sliding groove (53), one end of the spring (72) is fixedly connected to the limit pin (7), and the other end of the spring (72) is fixedly connected to the sliding groove (53), and a limit hole (62) is correspondingly provided on the side surface of the cover plate (6), and the limit pin (7) is slidably connected to the limit hole (62).

3. The intelligent cable intermediate joint explosion-proof box according to claim 1, characterized in that: The other ends of the first explosion-proof box (1) and the second explosion-proof box (2) are both threadedly connected to sealing caps (3), and a sealing rubber ring (31) is fixedly connected inside the sealing caps (3).

4. The intelligent cable intermediate joint explosion-proof box according to claim 1, characterized in that: The first explosion-proof box (1) and the second explosion-proof box (2) are both provided with an annular groove (22), an annular sealing ring (23) is sleeved in the two annular grooves (22), and the lower fixing plate (4) and the upper fixing plate (5) are both in press contact with the annular sealing ring (23).

5. The intelligent cable intermediate joint explosion-proof box according to claim 1, characterized in that: A felt ring (26) is provided inside the first explosion-proof box (1) and the second explosion-proof box (2). A limit ring (25) is fixedly connected inside the first explosion-proof box (1) and the second explosion-proof box (2). The inner diameter of the limit ring (25) is smaller than the felt ring (26).

6. The intelligent cable intermediate joint explosion-proof box according to claim 1, characterized in that: A rectangular sealing ring (61) is fixedly connected to the inner side of the cover plate (6), and a rectangular sealing groove (52) is correspondingly provided on the upper fixed plate (5), and the rectangular sealing ring (61) is in press contact with the rectangular sealing groove (52).

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