Mining intrinsic safety circuit communication plug

Abstract

The utility model discloses a mining intrinsically safe circuit communication plug, which comprises a shell and a step hole arranged in the shell, an insulating rod is arranged in the step hole in a penetrating manner, a step part is arranged on the insulating rod, and a plurality of grooves which are uniformly distributed along the circumferential direction and penetrate through the length direction of the insulating rod are arranged on the step part. A plurality of conducting rings are arranged on the step part in a sleeving manner, conducting strips arranged in the corresponding grooves are arranged on the conducting rings, an insulating ring is arranged between every two adjacent conducting rings, and the insulating rings are arranged on the step part in a sleeving manner; an end part conductive structure is inserted into the end part of the step part, a copper bar inserted into the step part is integrated on the end part conductive structure, the tail ends of the copper bar and the conductive bar extend into the shell and are respectively connected with an external cable, and the step hole is filled with insulating sealant; the current situation that in the prior art, a connection structure is poor in stability and prone to deformation in a vibration environment to cause breakage or poor contact, and the communication effect is affected is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine communication, in particular to a mine intrinsically safe circuit communication plug. Background Art

[0002] In underground coal mines, some communication and control equipment requires specialized, mine-grade tension communication cables to ensure proper communication. Traditional intrinsically safe circuit cable connectors utilize pin-type plugs for connection to the sockets on the supporting equipment. This traditional docking method simplifies production, reduces costs, and allows for the production of a large number of cores. However, the greater the number of cores, the lower the contact reliability. This is especially true when a large number of cores is present, as it can easily lead to tilted or bent pins, making alignment difficult. Furthermore, the spring-loaded socket structure is prone to loose connections.

[0003] The applicant has previously applied for relevant patents to optimize the problem of contact surface stability. For details, please refer to the patent application with publication number CN205900859U, which discloses a cable connector for the circuit in this case. By fixing the conductive core and the insulating layer at intervals on the plug shell, the conductive core is directly connected to the cable. The conductive core and the wire are frequently plugged in and easily pulled off when vibration occurs. The insulating material of the plug shell is plastic and easily deformed. As a result, during use, the plug-in part is easily deformed, resulting in breakage or poor contact, affecting the communication effect. Utility Model Content

[0004] The purpose of the utility model is to provide a mine intrinsically safe circuit communication plug to solve the problem in the prior art that the connection structure has poor stability and is easily deformed in a vibration environment, resulting in breakage or poor contact, thereby affecting the communication effect.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A mine-use intrinsically safe circuit communication plug, characterized in that it includes a shell and a stepped hole opened in the shell, an insulating rod is passed through the stepped hole, the insulating rod is provided with a stepped portion, the stepped portion is provided with a plurality of grooves uniformly distributed along the circumference and passing through the length direction of the insulating rod, a plurality of conductive rings are sleeved on the stepped portion, the plurality of conductive rings are each provided with a conductive strip placed in the corresponding groove, an insulating ring is provided between two adjacent conductive rings, and the plurality of insulating rings are sleeved on the stepped portion; an end conductive structure is inserted into the end of the stepped portion, a copper strip inserted into the stepped portion is integrated on the end conductive structure, the ends of the copper strip and the conductive strip are both extended into the shell and respectively connected to external cables, and the stepped hole is filled with insulating sealant.

[0007] Preferably, the outer shell is provided with an inner ring groove located at the large hole opening end of the stepped hole.

[0008] Preferably, the shell is provided with a positioning ring part for positioning, the shell is provided with a first stage located at one side of the positioning ring part and a second stage located at the other side of the positioning ring part, and the second stage is located at the large hole opening end of the stepped hole.

[0009] Preferably, the second stage is provided with a threaded part close to the positioning ring part, and the positioning ring part is provided with a first sealing groove opening towards the threaded part.

[0010] Preferably, the end of the first stage is provided with a second sealing groove, and the second sealing groove is provided with a sealing ring.

[0011] Preferably, the first stage is provided with a limiting groove between the second sealing groove and the positioning ring part.

[0012] Preferably, the shell is made of stainless steel.

[0013] Preferably, the shell is of an integrated structure.

[0014] Preferably, the middle part of the stepped part is provided with a threaded hole, the end conductive structure is provided with a threaded segment, and the threaded segment is threadedly matched with the threaded hole.

[0015] Preferably, the insulating sealant is epoxy resin.

[0016] Beneficial effects:

[0017] By setting the groove on the insulating rod for placing the conductive strip, simultaneously setting the conductive ring on the insulating rod, and connecting the copper strip on the end conductive structure and inserting it into the stepped part, the overall strength of the insulating rod is improved by the conductive strip and the connecting copper strip, the strength is improved, the plasticity is reduced, and the deformation will not occur when frequently plugged; meanwhile, the conductive strip is inserted into the stepped hole of the shell and then connected with the external cable, and the connecting part is filled and bonded by the insulating sealant, so that the breakage will not occur even in the case of vibration, thereby improving the structural stability and the conductive connection reliability of the entire plug. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a structure schematic view of the embodiment of the utility model;

[0019] Fig. 2 It is a sectional structure schematic view of the embodiment of the utility model;

[0020] Fig. 3 It is an explosion structure schematic view of the embodiment of the utility model;

[0021] In Figs. 1-3 In the drawings, the correspondence between the component names or lines and the drawing numbers is as follows:

[0022] The shell 1, the stepped hole 2, the insulating rod 3, the stepped part 31, the groove 32, the conductive ring 4, the conductive strip 5, the insulating ring 6, the end conductive structure 7, the copper strip 8, the inner ring groove 9, the positioning ring part 10, the first stage 11, the second stage 12, the threaded part 13, the first sealing groove 14, the second sealing groove 15, the sealing ring 16, and the limiting groove 17. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0024] Referring to Figs. 1-3 The utility model discloses an embodiment provides a mine intrinsic safety circuit communication plug, specifically includes shell 1 and the stepped hole 2 set up in shell 1, the insulating rod 3 is arranged in the stepped hole 2, the stepped part 31 is equipped on the insulating rod 3, the stepped part 31 is set up with the multiple grooves 32 that are uniformly distributed along the circumference and the length direction of the insulating rod 3, the multiple conductive rings 4 are sleeved on the stepped part 31, the multiple conductive rings 4 are all equipped with the conductive strip 5 in the corresponding groove 32, the adjacent two conductive rings 4 are all equipped with the insulating ring 6, and the multiple insulating rings 6 are all sleeved on the stepped part 31. The insulating ring 6 can be isolated by being sleeved at intervals. The conductive ring 4 can strengthen the strength of the insulating rod 3 by extending from the groove 32. The copper strip 8 is integrated on the end conductive structure 7 inserted into the stepped part 31. The copper strip 8 is further inserted into the stepped part 31 to strengthen the central strength of the insulating rod 3. The overall strength of the insulating rod 3 is enhanced by embedding the conductive strip 5 and the copper strip 8 into the insulating rod 3, and the deformation is avoided.

[0025] Meanwhile, the end of the copper strip 8 and the conductive strip 5 extends into the shell 1 and is connected with external cables respectively, the stepped hole 2 is filled with insulating sealant, the connection position of the external cable is placed into the stepped hole 2, and the stability of the connection position is improved by filling the insulating sealant. The connection position will not be pulled off under the vibration condition, and the stability of the plug during long time use is improved.

[0026] Specifically, in order to ensure the stability of the connection of the end conductive structure 7, a threaded hole is arranged in the middle of the step portion 31, the end conductive structure 7 is provided with a threaded section, the threaded section is screwed with the threaded hole, and the threaded section is locked in the threaded hole through screwing, so that the copper bar 8 is supported on the step portion 31 and the end conductive structure 7 is electrically connected.

[0027] In order to ensure that the insulating sealant effectively seals the connection state between the conductive strip 5, the copper bar 8 and the external cable, and has a tensile effect, the insulating sealant is epoxy resin, and silicone or the like can also be used, but the drying time of the epoxy resin is shorter.

[0028] At the same time, when filling the insulating sealant, the opening end of the step hole 2 needs to be sealed, and specifically, an inner ring groove 9 is arranged on the shell 1 and located at the large hole opening end of the step hole 2, and a cover plate for sealing is clamped in the inner ring groove 9 to achieve shielding and sealing of the insulating sealant.

[0029] At the same time, a positioning ring portion 10 is arranged on the shell 1, a first step portion 11 is arranged on one side of the positioning ring portion 10, and a second step portion 12 is arranged on the other side of the positioning ring portion 10, and the second step portion 12 is located on one side of the large hole opening end of the step hole 2, wherein the first step portion 31 is used to match the socket for plug-in sealing connection, and the second step is used to match the joint sheath shell.

[0030] The second step portion 12 is provided with a threaded portion 13 close to the positioning ring portion 10, the threaded portion 13 is used to connect the joint sheath shell, and a first sealing groove 14 is arranged on the positioning ring portion 10 and opens towards the threaded portion 13, so as to ensure sealing on the side connected with the external cable.

[0031] At the same time, a second sealing groove 15 is arranged at the end of the first step portion 11, a sealing ring 16 is arranged in the second sealing groove 15, and sealing is realized after the socket is inserted.

[0032] A limiting groove 17 is arranged on the first step portion 11 and located between the second sealing groove 15 and the positioning ring portion 10, the limiting groove 17 is used to form a stop cooperation when the socket is inserted, and can also form pressure relief during insertion.

[0033] In order to ensure the structural strength of the shell 1, the material of the shell 1 is stainless steel, and the shell 1 is an integral structure.

[0034] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated; can be mechanical connection, also can be electrical connection; can be direct connection, also can through intermediate medium indirectly connect, can be two element internal communication or two element's mutual action relationship. For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0035] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "inner", "outer" and so on is based on the orientation or position relationship shown in the drawing, or is the orientation or position relationship of the utility model product when using, just for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated must have a particular orientation, construct and operate with a particular orientation, therefore can not be understood as the limitation of the utility model. In addition, the terms "first", "second" and so on are only used for distinguishing description, and can not be understood as indicative or suggestive of relative importance.

[0036] For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure reference in the claims should not be regarded as limiting the claims involved.

Claims

1. A mine intrinsically safe circuit communication plug, characterized by: The invention comprises a housing (1) and a stepped hole (2) provided in the housing (1), an insulating rod (3) is passed through the stepped hole (2), a stepped portion (31) is provided on the insulating rod (3), a plurality of grooves (32) uniformly distributed along the circumferential direction and extending through the length direction of the insulating rod (3) are provided on the stepped portion (31), a plurality of conductive rings (4) are sleeved on the stepped portion (31), a plurality of conductive rings (4) are each provided with a conductive strip (5) disposed in a corresponding groove (32), an insulating ring (6) is provided between two adjacent conductive rings (4), and a plurality of insulating rings (6) are sleeved on the stepped portion (31); An end conductive structure (7) is inserted into the end of the step portion (31), and a copper bar (8) inserted into the step portion (31) is integrated on the end conductive structure (7). The ends of the copper bar (8) and the conductive bar (5) extend into the housing (1) and are respectively connected to external cables. The step hole (2) is filled with insulating sealant.

2. A mine intrinsically safe circuit communication plug according to claim 1, characterized in that: The outer shell (1) is provided with an inner ring groove (9) located at the large hole opening end of the stepped hole (2).

3. A mine intrinsically safe circuit communication plug according to claim 2, characterized in that: The housing (1) is provided with a positioning ring portion (10) for positioning, and the housing (1) is provided with a first stage (11) located on one side of the positioning ring portion (10) and a second stage (12) located on the other side of the positioning ring portion (10), wherein the second stage (12) is located on one side of the large hole opening end of the step hole (2).

4. A mine intrinsically safe circuit communication plug according to claim 3, characterized in that: The second stage (12) is provided with a threaded portion (13) close to the positioning ring portion (10), and the positioning ring portion (10) is provided with a first sealing groove (14) opening toward the threaded portion (13).

5. The intrinsically safe circuit communication plug for mining according to claim 4, characterized in that: A second sealing groove (15) is provided at the end of the first stage (11), and a sealing ring (16) is provided in the second sealing groove (15).

6. A mine intrinsically safe circuit communication plug according to claim 5, characterized in that: The first stage (11) is provided with a limiting groove (17) located between the second sealing groove (15) and the positioning ring portion (10).

7. The intrinsically safe circuit communication plug for mining according to claim 6, characterized in that: The material of the housing (1) is stainless steel.

8. The intrinsically safe circuit communication plug for mining according to claim 7, characterized in that: The housing (1) is an integrated structure.

9. The intrinsically safe circuit communication plug for mining according to claim 1, characterized in that: A threaded hole is provided in the middle of the step portion (31), and the end conductive structure (7) is provided with a threaded section, which is threadedly engaged with the threaded hole.

10. The intrinsically safe circuit communication plug for mining according to claim 1, characterized in that: The insulating sealant is epoxy resin.

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