Underwater cable junction box convenient for cable maintenance and replacement

Abstract

The utility model provides an underwater cable junction box convenient for cable maintenance and replacement, which relates to the technical field of underwater junction box machines and comprises a junction box, a connector arranged on the lower surface of the junction box and a filler head arranged at the bottom of the connector, and a connecting assembly is arranged between the connector and the filler head. The connecting assembly comprises a fixing sleeve arranged at the top of the filler head and a limiting column arranged on the side wall of the fixing sleeve, a mounting groove matched with the fixing sleeve is formed in the connector, an inserting groove, a sliding groove and a limiting groove which are communicated with one another are formed in the side wall of the connector, and rubber pads used for blocking the limiting column are arranged on the inner top wall and the inner bottom wall of the sliding groove. The diameters of the inserting groove, the sliding groove and the limiting groove are the same as the diameter of the limiting column, and the distance between the two sets of rubber pads is smaller than the diameter of the limiting column. According to the utility model, the filler head and the connector can be quickly mounted and dismounted, so that the interior of the connector can be conveniently cleaned, and the cable replacement speed can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater junction box machines, in particular to an underwater cable junction box which is convenient for repairing and replacing cables. Background Art

[0002] The junction box is a closed box-shaped product. It is one of the auxiliary materials of the power industry. The wire pipes in the power lines are passed through pipes or cable trays, as well as underwater wiring. Junction boxes are used as transitions at the joints of the wire pipes. The wire pipes are connected to the junction boxes, and the wires in the wire pipes are connected in the junction boxes, which play a role in protecting the wire pipes and connecting the wires. It also has the ability to resist water and external impact. The underwater power junction box plays a very important role in achieving fast and reliable connection of underground and underwater cables and protecting the cable connection sections, especially cable connections in harsh environments.

[0003] In order to improve the sealing between the cable connector and the junction box, a stuffing head is generally installed on the junction box to improve the waterproof effect of the junction box; however, after the cable in the stuffing head is pulled out, it is very difficult to clean the sealing filler and sealant because the internal space of the stuffing head is small, and the stuffing head and the connector are generally connected by bolts, so installation and disassembly require the use of tools such as wrenches, which affects the speed of cable replacement. Utility Model Content

[0004] The utility model aims to solve the problem that the existing junction box cannot quickly install and disassemble the connector and the stuffing head, and thus cannot quickly clean the inside of the stuffing head, which affects the cable replacement.

[0005] In order to achieve the above-mentioned invention object, the utility model provides the following technical solutions:

[0006] An underwater cable junction box for convenient maintenance and replacement of cables comprises a junction box, a connector arranged on the lower surface of the junction box, and a stuffing head arranged at the bottom of the connector, wherein a lower flange is arranged on the top of the stuffing head, an upper flange is installed on the upper surface of the lower flange by bolts, a fixing sleeve is arranged on the top of the upper flange, and a limiting column is fixedly connected to the side wall of the fixing sleeve, wherein a mounting groove matching the fixing sleeve is arranged inside the connector, and a slot, a slide groove and a limiting groove are arranged on the side wall of the connector, and a rubber pad for blocking the limiting column is arranged on the top wall and the bottom wall of the slide groove.

[0007] As a preferred technical solution of the present application, the diameters of the slots, the slide grooves and the limit grooves are the same as the diameter of the limit column, and the distance between the two groups of rubber pads is smaller than the diameter of the limit column.

[0008] As a preferred technical solution of the present application, a sealing gasket is provided on the inner side wall of the fixing sleeve, and a sealing groove matching with the sealing gasket is provided on the inner side wall of the installation groove.

[0009] As a preferred technical solution of the present application, the outer wall of the filling head is provided with evenly distributed anti-slip grooves.

[0010] As a preferred technical solution of the present application, there are at least two groups of the limiting columns, the mounting grooves, the slots and the limiting grooves.

[0011] As a preferred technical solution of the present application, a mounting sleeve is provided at the bottom of the filling head, and an outer wall of the mounting sleeve is provided with an external thread.

[0012] As a preferred technical solution of the present application, spare connecting heads are further provided on the outer walls on both sides of the junction box, blind plates are detachably mounted on the end faces of the spare connecting heads by bolts, and inspection plates are detachably mounted on the end faces of the junction box by bolts.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The top of the stuffing head is butted against the bottom of the connecting head, so that the limit column is inserted into the slide groove through the slot, and then the stuffing head is rotated to make the limit column slide into the limit groove through the slide groove. At this time, the limit column in the limit groove will be blocked by the provided rubber pad to prevent the limit column from sliding back and resetting, so that the stuffing head and the connecting head can be quickly installed; and when the two need to be disassembled, it is only necessary to forcibly reverse the stuffing head so that the limit column squeezes the rubber pad again and slides back into the slot again. At this time, the stuffing head and the connecting head can be quickly disassembled. When the stuffing inside the stuffing head needs to be cleaned, it is only necessary to remove the bolts between the lower flange and the upper flange, remove the stuffing head, and knock it on the ground to pour out the stuffing and sealant in the stuffing head, thereby increasing the speed of cable replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall structure diagram of the utility model;

[0016] Figure 2 It is a front view of the utility model;

[0017] Figure 3 This is a disassembled structural diagram of the connector and the stuffing head of the utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of the connection between the connector and the packing head of the utility model;

[0019] Figure 5 This is a bottom view of the connector of the present invention.

[0020] Indicated in the figure:

[0021] 1. Junction box; 101. Spare connector; 2. Connector; 201. Mounting slot; 202. Slot; 203. Limiting slot; 3. Filling head; 301. Lower flange; 302. Upper flange; 4. Fixing sleeve; 401. Limiting column; 5. Sealing pad; 6. Mounting sleeve; 7. Sealing groove; 8. Rubber pad. DETAILED DESCRIPTION

[0022] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0023] like Figures 1 to 5 As shown, the present embodiment proposes an underwater cable junction box for convenient maintenance and replacement of cables, comprising a junction box 1, a connector 2 arranged on the lower surface of the junction box 1, and a stuffing head 3 arranged at the bottom of the connector 2, a lower flange 301 is arranged on the top of the stuffing head 3, an upper flange 302 is installed on the upper surface of the lower flange 301 by bolts, a fixing sleeve 4 is arranged on the top of the upper flange 302, and a limiting column 401 is fixedly connected to the side wall of the fixing sleeve 4, wherein a mounting groove 201 matching with the fixing sleeve 4 is arranged inside the connector 2, a slot 202, a slide groove and a limiting groove 203 are arranged on the side wall of the connector 2, and a rubber pad 8 for blocking the limiting column 401 is arranged on the top wall and the bottom wall of the slide groove;

[0024] In addition, the diameters of the slot 202, the slide groove and the limiting groove 203 are the same as the diameter of the limiting column 401, and the distance between the two sets of rubber pads 8 is smaller than the diameter of the limiting column 401;

[0025] The top of the stuffing head 3 is butted against the bottom of the connector 2, and the fixing sleeve 4 on the top of the stuffing head 3 is inserted into the mounting groove 201 at the bottom of the connector 2. At this time, the limiting column 401 on the side wall of the fixing sleeve 4 will also be inserted into the slot 202. Then the stuffing head 3 is rotated relative to the connector 2, and the limiting column 401 will slide toward the limiting groove 203 through the slide groove. During the sliding process, the limiting column 401 will squeeze the rubber pad 8 to deform it. Therefore, the limiting column 401 can move normally between the two groups of rubber pads 8 in the slide groove under the action of manpower. After the limiting column 401 completely slides into the limiting groove 203 and disengages from the rubber pad 8, the rubber pad 8 will rebound and return to its normal shape after the pressure is released. At this time, the rubber pad 8 will block Limiting column 401, under normal circumstances, the limiting column 401 cannot slide back into the slot 202, so that the stuffing head 3 and the connector 2 can be quickly installed. When the two need to be disassembled, it is only necessary to forcibly reverse the stuffing head 3 and rotate it relative to the connector 2. At this time, the limiting column 401 will be forced to squeeze the rubber pad 8 again and slide back into the slot 202 through the slide groove, so that the stuffing head 3 can be quickly pulled out from the connector 2, thereby increasing the speed of cable replacement. When the filler inside the stuffing head 3 needs to be cleaned, it is only necessary to remove the bolts between the lower flange 301 and the upper flange 302, remove the stuffing head 3 separately, and knock it on the ground to pour out the filler and sealant in the stuffing head 3.

[0026] A mounting sleeve 6 is provided at the bottom of the stuffing head 3, and an outer wall of the mounting sleeve 6 is provided with an external thread; after the cable is replaced, a sealing sleeve can be installed on the external thread of the mounting sleeve 6, which can not only fix the cable but also prevent the sealing stuffing in the stuffing head 3 from leaking.

[0027] Among them, the outer wall of the filling head 3 is provided with evenly distributed anti-skid grooves; the anti-skid grooves can facilitate personnel to rotate the filling head 3 more stably.

[0028] It should be noted that at least two groups of the limiting posts 401 , the mounting grooves 201 , the slots 202 and the limiting grooves 203 are provided; and the stability of fixing the filling head 3 and the connecting head 2 can be further improved by using multiple groups of connecting heads 2 .

[0029] like Figure 3 , Figure 4 and Figure 5 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, a sealing gasket 5 is provided on the inner side wall of the fixing sleeve 4, and a sealing groove 7 matching with the sealing gasket 5 is provided on the inner side wall of the installation groove 201;

[0030] When the stuffing head 3 and the connector 2 are installed so that the fixing sleeve 4 is inserted into the installation groove 201, the sealing gasket 5 on the inner wall of the fixing sleeve 4 will be embedded in the sealing groove 7 on the inner wall of the installation groove 201, thereby further improving the sealing of the connection between the stuffing head 3 and the connector 2.

[0031] like Figure 1 and Figure 2 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, spare connectors 101 are provided on the outer walls of both sides of the junction box 1, and blind plates are detachably installed on the end faces of the spare connectors 101 by bolts, and access panels are detachably installed on the end faces of the junction box 1 by bolts;

[0032] When the connector 2 is damaged, multiple spare connectors 101 can be used temporarily, and the blind plate can seal the filling port of the spare connector 101 when it is not in use. When the inside of the junction box 1 needs to be repaired, the inspection panel can be opened to facilitate maintenance of the inside of the junction box 1.

[0033] The working principle of the utility model is as follows: the top of the filling head 3 is butted against the bottom of the connecting head 2, the limiting column 401 is inserted into the slot 202, and then the filling head 3 is rotated, the limiting column 401 will slide toward the limiting slot 203 through the slide groove, and the limiting column 401 will squeeze the rubber pad 8 to deform it during the sliding process, so the limiting column 401 can move normally between the two groups of rubber pads 8 in the slide groove under the action of manpower, and when the limiting column 401 completely slides into the limiting slot 203 and disengages from the rubber pad 8, the rubber pad 8 will rebound and return to its normal shape after the pressure is released, and the rubber pad 8 will block the limiting column 401, so that the limiting column 401 cannot slide back into the slot 202, so that the filling head 3 and the connecting head 2 can be quickly installed. When the two need to be disassembled, it is only necessary to forcibly reverse the stuffing head 3 and rotate it relative to the connecting head 2. At this time, the limiting column 401 will be forced to squeeze the rubber pad 8 again and slide back into the slot 202 through the slide groove, so that the stuffing head 3 can be quickly pulled out from the connecting head 2, thereby increasing the speed of cable replacement; and when the stuffing inside the stuffing head 3 needs to be cleaned, it is only necessary to remove the bolts between the lower flange 301 and the upper flange 302, take out the stuffing head 3 separately, and knock it on the ground to pour out the stuffing and sealant in the stuffing head 3.

[0034] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. An underwater cable junction box for convenient maintenance and replacement of cables, comprising a junction box (1), a connector (2) arranged on the lower surface of the junction box (1), and a stuffing head (3) arranged at the bottom of the connector (2), characterized in that: The top of the filling head (3) is provided with a lower flange (301), the upper surface of the lower flange (301) is installed with an upper flange (302) by bolts, the top of the upper flange (302) is provided with a fixing sleeve (4), and the side wall of the fixing sleeve (4) is fixedly connected to a limiting column (401), wherein the inside of the connecting head (2) is provided with a mounting groove (201) matching with the fixing sleeve (4), and the side wall of the connecting head (2) is provided with a slot (202), a slide groove and a limiting groove (203) that are interconnected, and the top wall and the bottom wall of the slide groove are both provided with a rubber pad (8) for blocking the limiting column (401).

2. The underwater cable junction box for convenient maintenance and replacement of cables according to claim 1 is characterized in that: The diameters of the slot (202), the slide groove and the limiting groove (203) are the same as the diameter of the limiting column (401), and the distance between the two groups of rubber pads (8) is smaller than the diameter of the limiting column (401).

3. The underwater cable junction box for convenient maintenance and replacement of cables according to claim 1, characterized in that: The inner side wall of the fixing sleeve (4) is provided with a sealing gasket (5), and the inner side wall of the installation groove (201) is provided with a sealing groove (7) matching with the sealing gasket (5).

4. The underwater cable junction box for convenient maintenance and replacement of cables according to claim 1, characterized in that: The outer wall of the filling head (3) is provided with evenly distributed anti-slip grooves.

5. The underwater cable junction box for convenient maintenance and replacement of cables according to claim 1, characterized in that: The limiting columns (401), the mounting grooves (201), the slots (202) and the limiting grooves (203) are provided in at least two groups.

6. The underwater cable junction box for convenient maintenance and replacement of cables according to claim 1, characterized in that: A mounting sleeve (6) is provided at the bottom of the filling head (3), and an outer wall of the mounting sleeve (6) is provided with an external thread.

7. The underwater cable junction box for convenient maintenance and replacement of cables according to claim 1, characterized in that: The outer walls on both sides of the junction box (1) are also provided with spare connectors (101), the end faces of the spare connectors (101) are detachably mounted with blind plates via bolts, and the end faces of the junction box (1) are detachably mounted with inspection plates via bolts.

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