Mining flame-proof high-voltage cable connector

Abstract

The invention relates to a mining flame-proof high-voltage cable connector, and relates to the technical field of connectors, the mining flame-proof high-voltage cable connector comprises a connecting plug and a connecting head, the connecting plug is internally provided with a socket terminal, the connecting head is internally provided with a connecting plug, and the connecting plug is inserted into the socket terminal. The socket terminal and the connecting plug are provided with a fastening mechanism used for preventing the socket terminal and the connecting plug from being accidentally disconnected, and an arc extinguishing mechanism used for protecting the connector after the socket terminal and the connecting plug are accidentally disconnected. According to the invention, the tightness between the socket terminal and the connecting plug is increased as much as possible, and the risk caused by accidental disconnection of the connector can be reduced as much as possible.

Description

Technical Field

[0001] The invention relates to the technical field of connectors, and in particular to a flameproof high-voltage cable connector for mining. Background Art

[0002] The application scenario of flameproof connectors is the environment with explosion hazards such as gas and coal dust in coal mines. Flameproof connectors are used in the field of automation and control in coal mines to solve the problem of rapid connection between flameproof equipment in coal mines.

[0003] The present application aims to further improve the connection firmness between the plug and the socket in a flameproof cable connector. Summary of the invention

[0004] In order to improve the connection firmness between the plug and the socket, the present application provides a flameproof high-voltage cable connector for mining.

[0005] The present application provides a mining flameproof high-voltage cable connector that adopts the following technical solution: A flameproof high-voltage cable connector for mining, comprising a plug connector and a connector, wherein the plug connector is provided with a socket terminal, the connector is provided with a connecting plug, the connecting plug is inserted into the socket terminal, and the socket terminal and the connecting plug are provided with The fastening mechanism includes a plurality of electrode patches arranged on the connecting plug, a corresponding number of electromagnets are arranged on the plurality of electrode patches, a corresponding number of permanent magnets are arranged in the socket terminal, the plurality of electromagnets extend into the socket terminal and abut against the corresponding permanent magnets, and after power is turned on, the plurality of electromagnets and the permanent magnets attract each other; The arc extinguishing mechanism includes a control rod arranged in a direction where the permanent magnet is away from the electromagnet, the control rod extends toward the connection between the socket terminal and the connecting plug, a pricking needle is arranged at the extended end of the control rod, an insulating oil bag is arranged in the socket terminal, the insulating oil bag is axially sleeved on the connecting plug, the insulating oil bag is located between the pricking needle and the permanent magnet, the pricking needle abuts against the outer surface of the insulating oil bag, and insulating oil is arranged in the insulating oil bag.

[0006] By adopting the above technical solution, after the connector is correctly connected and powered on, the current flows into the electrode patch and the wire connected thereto, so that the electromagnet extending into the limit groove and abutting against the permanent magnet attracts each other with the permanent magnet, thereby fastening the socket terminal and the connecting plug.

[0007] In addition, when the power is on, the connector and the plug connector are subjected to external force, so that when the connector and the plug connector are about to be separated, the permanent magnet and the electromagnet attract each other, thereby increasing the tightness between the socket terminal and the connecting plug.

[0008] When the socket terminal and the connecting plug are accidentally disconnected, the permanent magnet slides downward under the action of the electromagnet, and the piercing needle punctures the insulating oil bag so that the connecting cavity is filled with insulating oil, thereby cutting off the power to the connector and minimizing the safety hazard caused by accidental disconnection of the connector.

[0009] Optionally, an insulator is axially sleeved on the connecting plug, the electromagnet is arranged on a side of the insulator close to the socket terminal, a plurality of mounting grooves for placing electrode patches are opened on the inner wall of the insulator, the electrode patches are connected to the electromagnet through wires, and the wires pass through the insulator.

[0010] By adopting the above technical solution, the insulation of the connection plug is increased by the insulator, and at the same time, the electrode patch is prevented from slipping off the connection plug.

[0011] Optionally, the fastening mechanism also includes a locking rod rotatably connected to the socket terminal, the rotation axis of the locking rod is located on the side of the permanent magnet close to the insulator, the end of the locking rod close to the insulator abuts against the side wall of the electromagnet, the end of the locking rod away from the insulator is inclined along its own length gradually away from the electromagnet, and the side of the permanent magnet away from the connecting plug abuts against the locking rod.

[0012] By adopting the above technical solution, when the permanent magnet moves closer to the connecting plug, the permanent magnet applies a thrust to the locking rod in its own sliding direction. After cooperating with the rotating shaft, the direction of the force is changed so that the locking rod applies pressure to the electromagnet, thereby fastening the electromagnet.

[0013] Optionally, an end of the permanent magnet away from the connecting plug is arranged as an inclined surface, and the inclined surface is arranged parallel to the locking rod.

[0014] By adopting the above technical solution, the wear of the permanent magnet can be reduced as much as possible to increase the service life of the permanent magnet.

[0015] Optionally, the arc extinguishing mechanism also includes an arcing needle arranged at the end of the control rod, the arcing needle is arranged on the side of the needle close to the connecting plug, one end of the arcing needle extends toward the center of the socket terminal, and the other end of the arcing needle extends toward the insulating oil bag and extends into the insulating oil bag.

[0016] By adopting the above technical solution, the arc can be guided as much as possible between the socket terminal and the connecting plug through the arc-starting needle, and the arc is introduced into the insulating oil in the insulating oil bag to extinguish the arc.

[0017] Optionally, plug connectors are inserted at both ends of the connector, and the connecting plugs extend into the plug connectors inserted at both ends of the connector, and the connecting plugs extend into corresponding socket terminals respectively.

[0018] By adopting the above technical solution, plug connectors are inserted at both ends of the connector, so that both ends of the connector can be used as the plug-in front end or the plug-in rear end, which can facilitate the operation of workers as much as possible.

[0019] Optionally, insulators are sleeved on the connecting plugs at both ends, and the two insulators are fixed by bolts.

[0020] By adopting the above technical solution, the connecting plug is fixed by two insulators, which can avoid circuit damage caused by leakage of the main body of the connecting plug as much as possible.

[0021] Optionally, spring rings are provided on the inner walls at both ends of the connector, and a plurality of plug connectors extend into the corresponding inner walls of the spring rings respectively.

[0022] By adopting the above technical solution, the connector and the plug connector are fixed by the spring ring, which can prevent the plug connector from being separated from the connector as much as possible.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. Can improve the connection tightness of the socket terminal and the connecting plug as much as possible; 2. It can minimize the potential safety hazards caused by accidental disconnection of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of this application; Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure along line AA; Figure 3 yes Figure 2 The enlarged structural diagram at B in the middle; Figure 4 yes Figure 3 Enlarged structural diagram at point C in the middle.

[0025] Description of the drawings: 1. Connector; 101. Connecting plug; 2. Plug connector; 3. Spring ring; 4. Insulator; 5. Connecting cavity; 6. Fastening mechanism; 601. Electrode patch; 602. Electromagnet; 603. Permanent magnet; 604. Locking rod; 7. Arc extinguishing mechanism; 701. Insulating oil bag; 702. Control rod; 703. Stinging needle; 704. Arc striking needle; 8. Limiting groove; 9. Connecting hole; 10. Block; 11. Control groove; 12. Socket terminal. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1 -Attached Figure 4 , further details of this application are given.

[0027] A flameproof high voltage cable connector for mines, reference Figure 1 , Figure 2, including a connector 1, with a plug connector 2 inserted at both ends of the connector 1. Both ends of the inner wall of the connector 1 are fixedly connected with a spring ring 3, the plug connector 2 extends into the spring ring 3, and the outer wall of the plug connector 2 conflicts with the inner wall of the spring ring 3.

[0028] refer to Figure 2 The connector 1 is provided with a connection plug 101 extending to the plug connectors 2 on both sides, and both sides of the connection plug 101 are sleeved with an insulator 4, and the two insulators 4 are respectively inserted into the plug connectors 2 at corresponding positions. A bolt hole is provided in one insulator 4, and a fixing blind hole is provided in the other insulator 4. The fixing bolts pass through the bolt holes and extend into the fixing blind holes, thereby fixing the two insulators 4.

[0029] refer to Figure 2 , Figure 3 , both plug connectors 2 are provided with socket terminals 12 , and a connecting cavity 5 is opened in the socket terminal 12 , and both sides of the connecting plug 101 extend into the connecting cavity 5 corresponding to the position of the socket terminal 12 .

[0030] In addition, the socket terminal 12 and the connection plug 101 are provided with a fastening mechanism 6 and an arc extinguishing mechanism 7. The fastening mechanism 6 can prevent the connection plug 101 from accidentally falling off from the socket terminal 12 when the connector is powered on. The arc extinguishing mechanism 7 can suppress the spread of the arc generated between the connection plug 101 and the socket terminal 12 when they accidentally fall off.

[0031] refer to Figure 3 The fastening mechanism 6 includes two electrode patches 601 arranged on the connecting plug 101, wherein the two insulators 4 are both provided with mounting grooves corresponding in number to the electrode patches 601, and the electrode patches 601 are arranged in the mounting grooves.

[0032] In addition, one electrode patch 601 is a positive electrode, and the other electrode patch 601 is a negative electrode. A wire is fixedly connected to the positive electrode patch 601, penetrating the insulator 4 and extending toward the socket terminal 12. A plurality of iron bars are fixedly connected to the side of the insulator 4 near the socket terminal 12, and the wires are wound around the plurality of iron bars in sequence, and the winding direction of the wires on each iron bar is consistent.

[0033] When all the iron bars are wound, the wire is connected to the negative pole of the electrode patch 601. After power is turned on, the iron bars and the wires wound around them form an electromagnet 602, and the magnetic poles of each electromagnet 602 are in the same direction.

[0034] refer to Figure 3The fastening mechanism 6 further includes a permanent magnet 603 slidably connected to the socket terminal 12, and the number of the permanent magnets 603 corresponds to the number of the electromagnets 602. The socket terminal 12 is provided with a plurality of limit slots 8 corresponding to the number of the electromagnets 602, and the plurality of permanent magnets 603 are arranged in the limit slots 8, and the permanent magnets 603 can slide along the direction in which the limit slots 8 are opened.

[0035] A plurality of connection holes 9 corresponding to the positions of the electromagnets 602 are formed on one side of the limiting groove 8 close to the electromagnets 602. The electromagnets 602 extend into the corresponding connection holes 9 and abut against the permanent magnets 603. When powered on, the electromagnets 602 and the permanent magnets 603 are attracted to each other.

[0036] The fastening mechanism 6 further includes a locking rod 604 rotatably connected to the inner wall of the limiting groove 8 via a rotating shaft, the locking rod 604 is arranged coplanar with the electromagnet 602, and the rotating shaft of the locking rod 604 is located on the side of the permanent magnet 603 close to the insulator 4. One end of the locking rod 604 close to the insulator 4 abuts against the outer surface of the electromagnet 602, and the end of the locking rod 604 away from the insulator 4 is inclinedly arranged gradually away from the electromagnet 602 along its own length.

[0037] The end of the permanent magnet 603 away from the connecting plug 101 is set as an inclined surface, and the inclined surface is parallel to and abuts against the locking rod 604. When the permanent magnet 603 moves toward the connecting plug 101, the permanent magnet 603 applies a thrust to the locking rod 604 in its own sliding direction. After cooperating with the movable shaft of the rotating locking rod 604, the direction of the force is changed so that the locking rod 604 applies pressure to the electromagnet 602, thereby fastening the electromagnet 602.

[0038] In addition, the inner wall of the limiting groove 8 close to the locking rod 604 is parallel to the locking rod 604, which is used to limit the rotation direction of the locking rod 604, and can prevent the permanent magnet 603 from falling from the limiting groove 8 when the electromagnet 602 is not inserted. The inner wall of the limiting groove 8 away from the permanent magnet 603 is fixedly connected with a clamping block 10 to prevent the position of the permanent magnet 603 from being offset.

[0039] refer to Figure 4 The arc extinguishing mechanism 7 includes an insulating oil bag 701 fixedly connected to the socket terminal 12, and the insulating oil bag 701 is axially sleeved on the connecting plug 101 and abuts against the outer surface of the connecting plug 101. The insulating oil bag 701 is arranged on one side close to the connection between the socket terminal 12 and the connecting plug 101. In addition, the insulating oil bag 701 is filled with insulating oil for oil flow arc extinguishing.

[0040] refer to Figure 3 , Figure 4A control groove 11 is provided on the inner wall of the limiting groove 8 on the side away from the permanent magnet 603. The control groove 11 is "L"-shaped and extends toward the side away from the permanent magnet 603. The control groove 11 is provided with an opening connected to the connecting cavity 5 in the direction of the connecting cavity 5, and the opening is close to the connection between the socket terminal 12 and the connecting plug 101.

[0041] The arc extinguishing mechanism 7 further includes a control rod 702 fixedly connected to the side of the permanent magnet 603 facing away from the electromagnet 602, the control rod 702 is "L" shaped and is arranged in the control slot 11. A piercing needle 703 is fixedly connected to the end of the control rod 702, the piercing needle 703 extends to the side close to the insulator 4 and abuts against the outer surface of the insulating oil bag 701, and the outer surface of the insulating oil bag 701 has a certain elasticity, which can prevent the piercing needle 703 from being pierced by the weight of the permanent magnet 603 as much as possible.

[0042] refer to Figure 4 The arc extinguishing mechanism 7 further includes an arc-starting needle 704 fixedly connected to the end of the control rod 702, and the arc-starting needle 704 is arranged on a side of the needle 703 close to the connecting plug 101. The arc-starting needle 704 is in an "L" shape, one end of which extends toward the connecting cavity 5, and the other end extends toward the insulating oil bag 701 and extends into the insulating oil bag 701.

[0043] The working principle of the embodiment of the present application is as follows: after the connector is correctly connected and powered on, current flows into the electrode patch 601 and the wire connected thereto, so that the electromagnet 602 extending into the limiting groove 8 and abutting against the permanent magnet 603 attracts the permanent magnet 603, thereby fastening the socket terminal 12 and the connecting plug 101.

[0044] In addition, when the power is on and the connector 1 and the plug connector 2 are subjected to external force, so that the connector 1 and the plug connector 2 are about to be separated, the permanent magnet 603 cooperates with the locking rod 604 so that the locking rod 604 applies pressure to the electromagnet 602 to increase the friction of the electromagnet 602 and try to prevent the electromagnet 602 from slipping out of the limiting hole, thereby increasing the tightness between the socket terminal 12 and the connecting plug 101.

[0045] When the socket terminal 12 and the connection plug 101 are accidentally disconnected, the permanent magnet 603 slides downward under the action of the electromagnet 602, and the arc-starting needle 704 can guide the arc between the socket terminal 12 and the connection plug 101 as much as possible, and guide the arc into the insulating oil in the insulating oil bag 701 to extinguish the arc. If the permanent magnet 603 is further moved, the piercing needle 703 pierces the insulating oil bag 701 so that the connection cavity 5 is filled with insulating oil, thereby disconnecting the connector from the power supply, and minimizing the safety hazard caused by the accidental disconnection of the connector.

[0046] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A flameproof high-voltage cable connector for mining, comprising a plug connector (2) and a connector (1), wherein the plug connector (2) is provided with a socket terminal (12), and the connector (1) is provided with a connecting plug (101), wherein the connecting plug (101) is inserted into the socket terminal (12), characterized in that: The socket terminal (12) and the connecting plug (101) are provided with The fastening mechanism (6) comprises a plurality of electrode patches (601) arranged on the connecting plug (101), a corresponding number of electromagnets (602) being arranged on the plurality of electrode patches (601), a corresponding number of permanent magnets (603) being arranged in the socket terminal (12), the plurality of electromagnets (602) extending into the socket terminal (12) and contacting with the corresponding permanent magnets (603), and when powered on, the plurality of electromagnets (602) and the permanent magnets (603) attract each other; The arc extinguishing mechanism (7) comprises a control rod (702) arranged in a direction where the permanent magnet (603) is away from the electromagnet (602), the control rod (702) extends toward the connection between the socket terminal (12) and the connecting plug (101), a pricking needle (703) is arranged at the extending end of the control rod (702), an insulating oil bag (701) is arranged inside the socket terminal (12), the insulating oil bag (701) is axially sleeved on the connecting plug (101), the insulating oil bag (701) is located between the pricking needle (703) and the permanent magnet (603), the pricking needle (703) abuts against the outer surface of the insulating oil bag (701), and insulating oil is arranged inside the insulating oil bag (701).

2. The flameproof high-voltage cable connector for mining according to claim 1, characterized in that: An insulator (4) is axially sleeved on the connecting plug (101), the electromagnet (602) is arranged on a side of the insulator (4) close to the socket terminal (12), the inner wall of the insulator (4) is provided with a plurality of mounting grooves for placing electrode patches (601), the electrode patches (601) are connected to the electromagnet (602) via a wire, and the wire passes through the insulator (4).

3. The flameproof high-voltage cable connector for mining according to claim 2, characterized in that: The fastening mechanism (6) further comprises a locking rod (604) rotatably connected to the socket terminal (12); the rotation axis of the locking rod (604) is located on a side of the permanent magnet (603) close to the insulator (4); an end of the locking rod (604) close to the insulator (4) abuts against a side wall of the electromagnet (602); an end of the locking rod (604) away from the insulator (4) is inclinedly arranged along its length gradually away from the electromagnet (602); and a side of the permanent magnet (603) away from the connecting plug (101) abuts against the locking rod (604).

4. The flameproof high-voltage cable connector for mining according to claim 3, characterized in that: One end of the permanent magnet (603) away from the connecting plug (101) is arranged as an inclined surface, and the inclined surface is arranged parallel to the locking rod (604).

5. The flameproof high-voltage cable connector for mining according to claim 1, characterized in that: The arc extinguishing mechanism (7) further comprises an arc-starting needle (704) arranged at the end of the control rod (702), the arc-starting needle (704) being arranged on a side of the piercing needle (703) close to the connecting plug (101), one end of the arc-starting needle (704) extending towards a position close to the center of the socket terminal (12), and the other end of the arc-starting needle (704) extending towards the insulating oil bag (701) and extending into the insulating oil bag (701).

6. The flameproof high-voltage cable connector for mining according to claim 1, characterized in that: Both ends of the connector (1) are provided with plug connectors (2), the connector plug (101) extends into the plug connectors (2) provided at both ends of the connector (1), and the connector plug (101) extends into corresponding socket terminals (12) respectively.

7. A flameproof high-voltage cable connector for mining according to claim 6, characterized in that: Insulators (4) are sleeved on the connecting plugs (101) at both ends, and the two insulators (4) are fixed by bolts.

8. The flameproof high-voltage cable connector for mining according to claim 6, characterized in that: The inner walls of both ends of the connector (1) are provided with spring rings (3), and a plurality of the plug connectors (2) extend into the inner walls of the corresponding spring rings (3) respectively.

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