Junction box

Abstract

The utility model discloses a junction box which comprises a box body, a connector lug is installed at the position, right opposite to a wiring port, outside the box body, an annular supporting table is formed at the end, away from the box body, of the connector lug, an L-shaped supporting plate is installed on one side of the upper end of the connector lug, and a T-shaped lock bolt penetrates through the middle of the top end of the supporting plate. The beneficial effects of the utility model are that when the junction box is used, on one hand, the butt-jointed cable can be compressed and fixed under the action of the support plate, the T-shaped lock bolt, the arc-shaped pressing block and the lapping table, so that the disadvantage that the butt-jointed cable is loosened due to accidental pulling during use is effectively avoided, and the protection performance of the junction box is better; and on the other hand, through the design of internal threads, external threads, a cross rotating plate and a screwing screw groove, the box cover can be rapidly spliced with the box body in a manual screwing mode during installation, and efficient splicing and use of the junction box are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of mine junction boxes, in particular to a junction box. Background Art

[0002] During the installation of mining cables, in order to prevent the cable joints from being affected by the external environment, a junction box is required to protect the joints of the mining cables.

[0003] At present, the junction box for connecting mining cables mainly consists of a circular box body, a terminal head installed on the box body and a box cover fixed on the opening of the box body. Although the junction box with the above structure can protect the mining cables after connection, on the one hand, due to the lack of anti-loosening components at the terminal head on the junction box with the above structure, the junction box is easy to be pulled out of the connecting cable due to accidental pulling during use, thereby making the protection performance of the junction box poor. On the other hand, since the box cover on the junction box with the above structure is mainly fixed by screwing bolts with external tools, the opening and closing process of the junction box is relatively complicated, which is inconvenient for efficient assembly and use of the junction box. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The technical problem to be solved by the utility model is to provide a junction box which can effectively prevent the mining cable from loosening from the connection head after docking and can realize the rapid manual installation of the box cover without the aid of external tools in view of the current status of the prior art.

[0006] (II) Technical solution

[0007] The utility model is implemented through the following technical scheme: the utility model proposes a junction box, including a box body, a wiring head is installed at the outside of the box body opposite to the wiring port, the wiring head is formed with a ring-shaped platform at one end away from the box body, an L-shaped support plate is installed on one side of the upper end of the wiring head, a T-shaped locking bolt penetrates the middle of the top of the support plate, an arc-shaped pressure block is connected to the bottom end of the T-shaped locking bolt, an internal thread is opened on the upper part of the inner wall of the box body, an external thread is opened on the upper part of the box body, a box cover is arranged above the box body, a screw groove is opened on the periphery of the bottom end of the box cover for screwing with the external thread and the internal thread, a cross rotating plate is fixed to the middle of the upper end of the box cover, and a wiring cavity is also opened in the box body.

[0008] Furthermore, the wiring head is welded to the box body, and both the wiring head and the box body are made of malleable cast iron.

[0009] By adopting the above technical solution, such a design can effectively ensure the strength of the box body and the wiring head.

[0010] Furthermore, the support plate is welded to the terminal head, and the T-shaped locking bolt is threadedly connected to the support plate.

[0011] By adopting the above technical solution, convenient rotation of the T-shaped locking bolt relative to the support plate can be ensured.

[0012] Furthermore, the T-shaped locking bolt is rotatably connected to the arc-shaped pressing block, and the arc-shaped pressing block is made of insulating plastic.

[0013] By adopting the above technical solution, holding the arc-shaped pressing block by hand during the downward rotation of the T-shaped locking bolt can ensure that the arc-shaped pressing block can finally be reliably pressed on the connecting cable.

[0014] Furthermore, the wiring head is connected to the wiring cavity, and the box body is a circular structure.

[0015] By adopting the above technical solution, it can be ensured that the external docking cable can smoothly enter the wiring cavity.

[0016] Furthermore, the internal thread and the external thread are both formed on the box body, and the size of the screw groove matches the outer size of the upper end of the box body.

[0017] By adopting the above technical solution, after the screw-on screw groove is screwed with the internal thread and the external thread, double sealing between the box cover and the box body can be achieved.

[0018] Furthermore, the cross rotating plate is welded to the box cover, and the size of the box cover is larger than the size of the box body.

[0019] By adopting the above technical solution, the box cover can be conveniently rotated and screwed together by pinching the cross-shaped rotating plate.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] In order to solve the problem that the current junction box for connecting mining cables mainly consists of a circular box body, a wiring head installed on the box body and a box cover fixed on the opening of the box body, although the junction box of the above structure can protect the mining cables after connection, on the one hand, due to the lack of anti-loosening components at the wiring head of the junction box of the above structure, the junction box is easy to be pulled out of the junction cable due to accidental pulling during use, thereby making the protection performance of the junction box poor, and on the other hand, the box cover of the junction box of the above structure is mainly fixed by screwing bolts with external tools The problem of the junction box being fixed, resulting in a complicated opening and closing process, which is inconvenient for the efficient assembly and use of the junction box. When in use, the utility model can, on the one hand, realize the compression and fixation of the cables after docking under the action of the support plate, T-shaped locking bolt, arc-shaped pressure block and platform. This design effectively avoids the disadvantage that the cables after docking are loosened due to accidental pulling during use, so that the protection performance of the junction box is better. On the other hand, through the design of internal threads, external threads, cross turning plates and screw-on screw grooves, the box cover can be quickly spliced ​​with the box body by manually screwing during installation, which is convenient for the efficient assembly and use of the junction box. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a junction box described in the utility model;

[0024] Figure 2 It is a main sectional view of a box cover in a junction box described in the utility model.

[0025] The following are the descriptions of the reference numerals:

[0026] 1. Box cover; 2. Wiring cavity; 3. T-shaped locking bolt; 4. Support plate; 5. Platform; 6. Wiring head; 7. Box body; 8. Arc-shaped pressure block; 9. External thread; 10. Internal thread; 11. Cross swivel plate; 12. Screw-in screw groove. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] like Figure 1-Figure 2As shown, a junction box in this embodiment includes a box body 7, a terminal head 6 is installed at the outside of the box body 7 facing the wiring port, and a ring-shaped platform 5 is formed at one end of the terminal head 6 away from the box body 7. An L-shaped support plate 4 is installed on one side of the upper end of the terminal head 6. A T-shaped locking bolt 3 penetrates the middle of the top of the support plate 4, and an arc-shaped pressing block 8 is connected to the bottom end of the T-shaped locking bolt 3. The T-shaped locking bolt 3 is rotatably connected to the arc-shaped pressing block 8. The arc-shaped pressing block 8 is made of insulating plastic. When the T-shaped locking bolt 3 is rotated downward, the arc-shaped pressing block 8 can be held by hand to ensure that the arc-shaped pressing block 8 can be finally In order to reliably press on the docking cable, an internal thread 10 is provided on the upper inner wall of the box body 7, an external thread 9 is provided on the upper outer part of the box body 7, a box cover 1 is arranged above the box body 7, and a screw groove 12 is provided on the outer periphery of the bottom end of the box cover 1 to screw with the external thread 9 and the internal thread 10. After the screw groove 12 is screwed with the internal thread 10 and the external thread 9, double sealing of the box cover 1 and the box body 7 can be achieved. A cross turn plate 11 is fixed to the middle part of the upper end of the box cover 1. The cross turn plate 11 can be pinched by hand to realize the convenient rotation and screwing of the box cover 1. A wiring cavity 2 is also provided in the box body 7.

[0029] like Figure 1-Figure 2 As shown, in this embodiment, the terminal head 6 is welded to the box body 7, and both the terminal head 6 and the box body 7 are made of malleable cast iron. Such a design can effectively ensure the strength of the box body 7 and the terminal head 6. The support plate 4 is welded to the terminal head 6, and the T-shaped locking bolt 3 is threadedly connected to the support plate 4, which can ensure the convenient rotation of the T-shaped locking bolt 3 relative to the support plate 4.

[0030] like Figure 1-Figure 2 As shown, in this embodiment, the terminal head 6 is connected to the wiring cavity 2, and the box body 7 is a circular structure, which can ensure that the external docking cable can smoothly enter the wiring cavity 2. The internal thread 10 and the external thread 9 are both formed on the box body 7. The size of the screw groove 12 matches the outer size of the upper end of the box body 7. The cross turn plate 11 is welded to the box cover 1, and the size of the box cover 1 is larger than the size of the box body 7.

[0031] The specific implementation process of this embodiment is as follows: when in use, first place the box body 7 in the use position, then extend the wiring terminal of the external cable into the wiring cavity 2 for docking and fixing, and then the junction box can be put into use. During use, the cables are pressed and fixed after docking under the action of the support plate 4, T-lock bolt 3, arc-shaped pressure block 8 and platform 5. This design effectively avoids the disadvantage that the cables are accidentally pulled loose during use after docking, so that the protection performance of the junction box is better. At the same time, through the design of the internal thread 10, the external thread 9, the cross turn plate 11 and the screw groove 12, the box cover 1 can be quickly spliced ​​with the box body 7 by manually screwing during installation, which is convenient for efficient assembly and use of the junction box.

[0032] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A junction box, Features: The invention comprises a box body (7), a terminal head (6) is installed at the outside of the box body (7) opposite to the wiring port, an annular platform (5) is formed at one end of the terminal head (6) away from the box body (7), an L-shaped support plate (4) is installed on one side of the upper end of the terminal head (6), a T-shaped locking bolt (3) passes through the middle of the top of the support plate (4), and an arc-shaped pressing block (8) is connected to the bottom end of the T-shaped locking bolt (3), an internal thread (10) is provided on the upper part of the inner wall of the box body (7), an external thread (9) is provided on the upper part of the outer body (7), a box cover (1) is arranged above the box body (7), a screw groove (12) screwed with the external thread (9) and the internal thread (10) is provided on the outer periphery of the bottom end of the box cover (1), a cross rotating plate (11) is fixed on the middle of the upper end of the box cover (1), and a wiring cavity (2) is also provided in the box body (7).

2. A junction box according to claim 1, Features: The wiring head (6) is welded to the box body (7), and both the wiring head (6) and the box body (7) are made of malleable cast iron.

3. A junction box according to claim 1, Features: The support plate (4) is welded to the terminal head (6), and the T-shaped locking bolt (3) is threadedly connected to the support plate (4).

4. A junction box according to claim 1, Features: The T-shaped locking bolt (3) is rotatably connected to the arc-shaped pressing block (8), and the arc-shaped pressing block (8) is made of insulating plastic.

5. A junction box according to claim 1, Features: The wiring head (6) is in communication with the wiring cavity (2), and the box body (7) is a circular structure.

6. A junction box according to claim 1, Features: The internal thread (10) and the external thread (9) are both formed on the box body (7), and the size of the screw thread groove (12) matches the outer size of the upper end of the box body (7).

7. A junction box according to claim 1, Features: The cross-turn plate (11) is welded to the box cover (1), and the size of the box cover (1) is larger than the size of the box body (7).

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