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 plug shell and a socket shell, the plug shell is internally provided with a plug-in assembly, and the socket shell is internally provided with a plug-in assembly matched with the plug-in assembly in a plug-in mode; a first optical fiber box and a first box cover for blocking the first optical fiber box are fixedly arranged on the plug shell, the bottom side of the first optical fiber box is communicated with the interior of the plug shell, and a second optical fiber box and a second box cover for blocking the second optical fiber box are fixedly arranged on the socket shell; the first optical fiber box is fixedly provided with a connecting copper sleeve, the second optical fiber box is provided with a connecting port for inserting the connecting copper sleeve, the first optical fiber box and the second optical fiber box are communicated through the connecting copper sleeve, and the second optical fiber box is provided with a wiring port communicated with the outside; according to the invention, the connector can further achieve the transmission of optical signals on the basis of achieving the transmission of electric signals of a common cable.

Description

Technical Field

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

[0002] The flameproof high-voltage cable connector for mining is specially designed for coal mines and other explosive gas environments. It is a key electrical connection device to ensure safe production in coal mines. Facing the explosion-proof challenges brought by explosive gas mixtures such as methane and coal dust, the connector adopts a special flameproof design, which can build a reliable flameproof barrier at the cable connection, effectively isolate electrical sparks or arcs, and prevent explosion accidents.

[0003] Most of the mining connectors on the market currently consist of a plug part and a socket part, with eight cables connected at both ends. The socket part is pre-fixed on a machine or equipment that requires 3.3kV voltage and 300-630A current power supply, and the plug part transmits power to the target device through plugging.

[0004] Although this design meets the basic electrical connection requirements, its signal transmission performance faces severe tests in the complex and changeable environment of coal mines. Specifically, there are not only flammable and explosive substances such as gas and coal dust in coal mines, but also a large number of signals need to be transmitted at the same time, which puts higher requirements on the signal transmission performance of electrical equipment. The above conventional electrical signal transmission method is susceptible to interference in the underground environment, lacks stability, and is difficult to meet complex communication needs, so there is room for improvement. Summary of the invention

[0005] The purpose of this application is to provide a flameproof high-voltage cable connector for mining, so as to solve the problem that the above connector cannot meet the signal transmission requirements in the complex environment of underground coal mines.

[0006] 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 shell and a socket shell, wherein a plug assembly is arranged in the plug shell, and an insertion assembly which is plugged and matched with the plug assembly is arranged in the socket shell; a first optical fiber box is fixedly arranged on the plug shell, and a first box cover is installed to block the first optical fiber box, and the bottom side of the first optical fiber box is communicated with the inside of the plug shell, and a second optical fiber box is fixedly arranged on the socket shell, and a second box cover is installed to block the second optical fiber box; a connecting copper sleeve is fixedly arranged on the first optical fiber box, and a connecting port for inserting the connecting copper sleeve is provided on the second optical fiber box, the first optical fiber box and the second optical fiber box are communicated through the connecting copper sleeve, and a wiring port connected to the outside is provided on the second optical fiber box.

[0007] By adopting the above technical solution, when the connector is used, the external ordinary cable is pre-connected to the plug-in component and the insertion component respectively, and then the plug and the socket are plugged into each other; in addition, due to the matching arrangement of the first fiber optic box and the second fiber optic box, the end of one optical cable is inserted into the second fiber optic box from the wiring port, and the other optical cable is inserted into the first fiber optic box from the opening on the inner wall of the plug shell that is connected to the first fiber optic box. The connector can realize the transmission of electrical signals based on ordinary cables.

[0008] Optionally, the first box cover and the second box cover are both made of transparent material.

[0009] By adopting the above technical solution, since the first box cover and the second box cover are both made of transparent materials, it is convenient for the staff to directly observe the connection status of the optical cables inside the first optical fiber box and the second optical fiber box.

[0010] Optionally, the plug shell is fixedly provided with a first protective shell on the outside of the first optical fiber box, the first protective shell is provided with an opening on the side away from the plug shell, and a first cover plate for sealing the opening is installed. The socket shell is fixedly provided with a second protective shell on the outside of the second optical fiber box, the second protective shell is provided with an opening on the side away from the socket shell, and a second cover plate for sealing the opening is installed.

[0011] By adopting the above technical solution, when the connector is used underground in a coal mine, the first box cover is protected by the combination of the first cover plate and the first protective shell, and the second box cover is protected by the combination of the second protective shell and the second cover plate, thereby reducing the possibility of external impurities adhering to the first box cover and the second box cover, and when it is necessary to observe the inside of the first optical fiber box and the second optical fiber box, the staff can quickly open the first box cover and the second box cover.

[0012] Optionally, the first cover plate and the second cover plate are both made of transparent material, a mounting groove is provided on the inner edge of the opening of the first protective shell, one side of the first cover plate is hinged to the inner wall of the mounting groove through a rotating shaft, and the other side of the first cover plate can be rotatably inserted into the mounting groove.

[0013] By adopting the above technical solution, the user can observe the optical cable in the first optical fiber box through the first cover plate and the first box cover, which further facilitates the subsequent detection of the connection status of the optical cable in the first optical fiber box.

[0014] Optionally, a support rod is fixedly provided on the first protective shell, a support seat is fixedly provided on the end of the support rod away from the first protective shell, and a waist-shaped fixing hole is opened on the support seat.

[0015] By adopting the above technical solution, after the connector is plugged in, the staff can pass the screws through the waist-shaped fixing hole and then fix the support base on a certain installation surface, thereby reducing the possibility of the connector becoming loose due to subsequent random swinging.

[0016] Optionally, an oblique support rod is provided on the outside of the plug shell, and two ends of the oblique support rod are respectively fixed to the connection between the first protective shell and the support rod.

[0017] By adopting the above technical solution, due to the application setting of the diagonal support rod, the two ends of the diagonal support rod are respectively fixedly connected to the first protective shell and the support rod, thereby improving the supporting stability of the support rod to the entire connector.

[0018] Optionally, the side of the first protective shell away from the plug housing is hinged to one end of the diagonal support rod, and the other end of the diagonal support rod is detachably connected to the outer side surface of the support rod.

[0019] By adopting the above technical solution, due to the installation setting of the diagonal support rod, it is convenient for the staff to choose whether to use the diagonal support rod for fixing according to the actual situation. For example, the diagonal support rod can be folded and rotated for storage during transportation, thereby improving the performance of the connector.

[0020] Optionally, an extension rod is fixedly provided at the end of the diagonal brace away from the supporting rod, and the extension rod can abut or be displaced with the side of the first cover plate away from the first protective shell as the diagonal brace rotates.

[0021] By adopting the above technical solution, when the end of the diagonal support rod is normally connected to the outside of the support rod, the two extension rods respectively abut and lock the first cover plate, thereby improving the stability of the first cover plate after sealing the first protective shell.

[0022] Optionally, a cleaning cotton is fixedly provided on one side of the diagonal support rod, and the cleaning cotton can abut or be displaced with the side of the first cover plate away from the first protective shell as the diagonal support rod rotates.

[0023] By adopting the above technical solution, during the rotation of the diagonal support rod, due to the setting of the cleaning cotton, the cleaning cotton on the diagonal support rod can be rotated to a state of abutment or misalignment with the side of the first cover plate away from the first protective shell, during which the cleaning cotton is convenient to use to clean the outer surface of the first cover plate.

[0024] Optionally, a locking through hole is provided on the end of the diagonal support rod away from the first protective shell, a locking screw hole that can overlap with the locking through hole is provided on the support rod, and a butterfly bolt is provided on the outside of the diagonal support rod that passes through the locking through hole and is screwed into the locking screw hole.

[0025] By adopting the above technical solution, when the end of the diagonal brace is fixed to the support rod, the diagonal brace is first rotated to make the locking through hole coincide with the locking screw hole, and then a butterfly bolt is used to penetrate the locking through hole and screwed into the locking screw hole, thereby realizing a detachable connection between the diagonal brace and the support rod.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Due to the matching arrangement of the first fiber optic box and the second fiber optic box, the end of one optical cable is inserted into the second fiber optic box from the wiring port, and the other optical cable is inserted into the first fiber optic box from the opening on the inner wall of the plug housing that is connected to the first fiber optic box. The connector can further realize the transmission of optical signals on the basis of realizing the transmission of electrical signals through ordinary cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 It is a schematic diagram of the explosion structure of Example 1 of the present application; Figure 3 This is a schematic cross-sectional view of the plug housing and the socket housing when they are plugged together in Embodiment 1 of the present application; Figure 4 It is a schematic diagram of the overall structure of Example 2 of the present application; Figure 5 This is a schematic cross-sectional structure diagram of the second protective shell and the second cover plate being installed and matched in Embodiment 2 of the present application; Figure 6 This is a structural schematic diagram of the installation arrangement of the hinge block on the diagonal brace according to Example 2 of the present application; Figure 7 It is a partial cross-sectional structural schematic diagram of the installation arrangement of the cleaning cotton on the diagonal support rod embodied in Example 2 of the present application.

[0029] In the figure, 1, plug shell; 11, first optical fiber box; 12, first box cover; 13, connecting copper sleeve; 14, first protective shell; 141, installation sink groove; 142, guide slide groove; 15, first cover plate; 2, socket shell; 21, second optical fiber box; 211, connecting port; 212, wiring port; 22, second box cover; 23, sealing gasket; 24, second protective shell; 25, second cover plate; 3, support rod; 31, support seat; 311, waist-shaped fixing hole; 32, locking screw hole; 4, diagonal support rod; 41, locking through hole; 42, cleaning cotton; 43, extension rod; 44, hinge block; 5, butterfly bolt. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0031] Embodiment 1: Reference Figure 1 and Figure 2 , a flameproof high-voltage cable connector for mining, comprising a plug housing 1 and a socket housing 2, wherein a plug assembly (not shown in the figure) is arranged in the plug housing 1, and an insertion assembly (not shown in the figure) which is plugged and matched with the plug assembly is arranged in the socket housing 2; When the connector is used, the external cable is pre-connected to the plug assembly and the insertion assembly respectively, and then the plug and the socket are plugged into each other. This plugging method is a conventional structure, and the specific internal structure is not repeated here.

[0032] Reference Figure 2 and Figure 3 , the plug housing 1 is integrally formed with a first optical fiber box 11, a first box cover 12 for blocking the first optical fiber box 11 is fixed by screws, and the bottom side of the first optical fiber box 11 is connected to the inside of the plug housing 1; the socket housing 2 is integrally formed with a second optical fiber box 21, and a second box cover 22 for blocking the second optical fiber box 21 is fixed by screws; The first optical fiber box 11 is fixedly provided with a connecting copper sleeve 13, and an outer thread is provided on the outer periphery of one end of the connecting copper sleeve 13, and a screw hole is provided on the first optical fiber box 11; the second optical fiber box 21 is provided with a connecting port 211 for inserting the connecting copper sleeve 13, the first optical fiber box 11 and the second optical fiber box 21 are connected through the connecting copper sleeve 13, and the second optical fiber box 21 is provided with a wiring port 212 connected with the outside; When installing the connecting copper sleeve 13, the connecting copper sleeve 13 is screwed into the screw hole on the first optical fiber box 11 in advance, and then after the plug and the socket are plugged in, the end of the connecting sleeve away from the first optical fiber box 11 is inserted into the connecting port 211 on the second optical fiber box 21, so as to realize the connection between the first optical fiber box 11 and the second optical fiber box 21.

[0033] Reference Figure 1 and Figure 2A rubber sealing pad 23 is provided between the first optical fiber box 11 and the first box cover 12, and between the second optical fiber box 21 and the second box cover 22, so as to enhance the sealing performance of the gap there.

[0034] The implementation principle of the embodiment of the present application is: One end of the external optical cable is inserted into the second optical fiber box 21 from the wiring port 212, and the other optical cable is inserted into the first optical fiber box 11 from the opening on the inner wall of the plug housing 1 that is connected to the first optical fiber box 11. Due to the setting of the connecting sleeve, the connector can further realize the transmission of optical signals on the basis of realizing the transmission of electrical signals of ordinary cables.

[0035] Embodiment 2: Reference Figure 4 and Figure 5 , the difference between the embodiment of the present application and the embodiment 1 is that the first box cover 12 and the second box cover 22 are both made of transparent materials, specifically polymethyl methacrylate, also known as organic glass, which is a thermoplastic plastic with high transparency. The box cover of this material can provide a clear field of view and excellent durability, which is convenient for directly observing the connection status of the optical cables inside the first optical fiber box 11 and the second optical fiber box 21; The plug housing 1 is fixedly provided with a first protective shell 14 on the outside of the first optical fiber box 11, and the first protective shell 14 is provided with an opening on the side away from the plug housing 1, and a first cover plate 15 for sealing the opening is installed; the socket housing 2 is fixedly provided with a second protective shell 24 on the outside of the second optical fiber box 21, and the second protective shell 24 is provided with an opening on the side away from the socket housing 2, and a second cover plate 25 for sealing the opening is installed.

[0036] The first box cover 12 is protected by the combination of the first cover plate 15 and the first protective shell 14 , and the second box cover 22 is protected by the combination of the second protective shell 24 and the second cover plate 25 , thereby reducing the possibility of foreign matter adhering to the first box cover 12 and the second box cover 22 .

[0037] Reference Figure 5 and Figure 6 The first cover plate 15 and the second cover plate 25 are both made of transparent materials. The inner edges of the openings of the first protective shell 14 and the second protective shell 24 are provided with mounting grooves 141. One side of the first cover plate 15 is hinged to the inner wall of the mounting groove 141 through a rotating shaft; the other side of the first cover plate 15 can be rotated and inserted into the mounting groove 141. The installation method of the second cover plate 25 is the same as that of the first cover plate 15, which will not be repeated here; the user can observe the optical cable in the first optical fiber box 11 through the first cover plate 15 and the first box cover 12.

[0038] Reference Figure 4 and Figure 5A support rod 3 is fixed on the outer surface of the first protective shell 14 and the second protective shell 24, wherein a support seat 31 is fixed on the other end of the two support rods 3, and a waist-shaped fixing hole 311 is opened on the support seat 31; after the connector is plugged in, the staff can pass the screws through the waist-shaped fixing hole 311 and then fix the support seat 31 on a certain installation surface, so as to reduce the possibility of the connector being loosened during subsequent installation.

[0039] Reference Figure 4 and Figure 5 The outside of the plug shell 1 and the socket shell 2 are both provided with diagonal support rods 4, wherein the two ends of one diagonal support rod 4 are respectively connected to the surface of the first protective shell 14 and the support rod 3 on the first protective shell 14, and the two ends of the other diagonal support rod 4 are respectively connected and fixed to the second protective shell 24 and the support rod 3 on the second protective shell 24.

[0040] The side of the first protective shell 14 away from the plug housing 1 is hinged to one end of the diagonal support rod 4, and the other end of the diagonal support rod 4 is detachably connected to the outer side of the support rod 3 on the first protective shell 14; one end of the other diagonal support rod 4 is hinged to the outer side of the second protective shell 24, and the other end is detachably connected to the support rod 3 on the second protective shell 24; A locking through hole 41 is provided on the end of the two diagonal struts 4, and a locking screw hole 32 that can overlap with the locking through hole 41 is provided on the support rod 3. A butterfly bolt 5 is provided on the outside of the diagonal strut 4 and passes through the locking through hole 41 and is screwed into the locking screw hole 32, thereby realizing a detachable connection between the end of the diagonal strut 4 and the support rod 3.

[0041] Reference Figure 5 , Figure 6 and Figure 7 A hinge block 44 with a circular cross-section is fixed at the end of the diagonal support rod 4. At the same time, a guide groove 142 for the hinge block 44 to be inserted and slide is provided on the first protective shell 14 and the second protective shell 24. The diagonal support rod 4 can rotate around the axis of the hinge block 44 and can also slide along the length direction of the guide groove 142. At the same time, the number of locking through holes 41 is three, which are evenly distributed along the length direction of the support rod 3.

[0042] Reference Figure 5 and Figure 7 The rotating surfaces of the two diagonal support rods 4 are parallel to the outer surface of the first cover plate 15 away from the first protective shell 14; a cleaning cotton 42 made of sponge material is fixed on one side of the diagonal support rod 4 by glue, and during the rotation of the diagonal support rod 4, the cleaning cotton 42 on one of the diagonal support rods 4 can be rotated to abut or displaced with the side of the first cover plate 15 away from the first protective shell 14. In this process, the cleaning cotton 42 can clean the outer surface of the first cover plate 15, and the cleaning cotton 42 on the other diagonal support rod 4 can clean the outer surface of the second cover plate 25.

[0043] Reference Figure 4 and Figure 5 An extension rod 43 is fixedly disposed at the end of the diagonal brace rod 4 away from the support rod 3, wherein during the rotation of the diagonal brace rod 4, the extension rod 43 can rotate to abut or displace with the side of the first cover plate 15 away from the first protective shell 14, that is, when the end of the diagonal brace rod 4 is normally connected to the outside of the support rod 3, the two extension rods 43 respectively abut and lock the first cover plate 15 and the second cover plate 25; When the first fiber optic box 11 or the second fiber optic box 21 needs to be opened for maintenance, the diagonal support rod 4 is first unlocked and rotated to release the abutment of the extension rod 43 on the first cover plate 15 or the second cover plate 25. Then the first cover plate 15 or the second cover plate 25 can be opened, and finally the first box cover 12 and the second box cover 22 are opened to inspect the first fiber optic box 11 and the second fiber optic box 21.

[0044] The implementation principle of the embodiment of the present application is: The user can observe the optical cable in the first optical fiber box 11 through the first cover plate 15 and the first box cover 12, and observe the optical cable in the second optical fiber box 21 through the second cover plate 25 and the second box cover 22; after the connector is plugged in, the staff can fix the support seat 31 on a certain installation surface by screwing through the waist-shaped fixing hole 311, and use the diagonal support rod 4 to enhance the supporting stability of the support rod 3; When the end of the diagonal support rod 4 is normally connected to the outside of the support rod 3, the two extension rods 43 respectively abut and lock the first cover plate 15 and the second cover plate 25; when the first optical fiber box 11 or the second optical fiber box 21 needs to be opened for maintenance, the diagonal support rod 4 is first unlocked and rotated to release the abutment of the extension rod 43 on the first cover plate 15 or the second cover plate 25; When the outer surface of the first cover plate 15 and the second cover plate 25 needs to be cleaned, the rotation connection between the support rod 3 and the diagonal support rod 4 can be unlocked, and then the cleaning cotton 42 can wipe and clean the surface of the first cover plate 15 or the second cover plate 25 as the diagonal support rod 4 rotates. Unless otherwise defined, the terms or scientific terms used in this application should be the usual meanings understood by people with general skills in the field to which this application belongs. The "first", "second", "third" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and other similar words do not indicate a quantity limit, but indicate that there is at least one. "Including" or "including" and other similar words mean that the elements or objects appearing in front of "including" or "including" include the elements or objects listed after "including" or "including" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0045] 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 use in mining, comprising a plug housing (1) and a socket housing (2), wherein a plug assembly is provided in the plug housing (1), and an insertion assembly is provided in the socket housing (2) for plugging and mating with the plug assembly; It is characterized in that The plug housing (1) is fixedly provided with a first optical fiber box (11), and a first box cover (12) is installed to block the first optical fiber box (11); the bottom side of the first optical fiber box (11) is connected to the inside of the plug housing (1); the socket housing (2) is fixedly provided with a second optical fiber box (21), and a second box cover (22) is installed to block the second optical fiber box (21); The first optical fiber box (11) is fixedly provided with a connecting copper sleeve (13), and the second optical fiber box (21) is provided with a connecting port (211) for inserting the connecting copper sleeve (13); the first optical fiber box (11) and the second optical fiber box (21) are connected via the connecting copper sleeve (13), and the second optical fiber box (21) is provided with a wiring port (212) connected with the outside.

2. A flameproof high-voltage cable connector for mining according to claim 1, characterized in that: The first box cover (12) and the second box cover (22) are both made of transparent material.

3. A flameproof high-voltage cable connector for mining according to claim 1, characterized in that: The plug housing (1) is fixedly provided with a first protective shell (14) outside the first optical fiber box (11); the first protective shell (14) is provided with an opening on a side away from the plug housing (1) and is provided with a first cover plate (15) for sealing the opening; The socket housing (2) is fixedly provided with a second protective shell (24) outside the second optical fiber box (21); the second protective shell (24) is provided with an opening on a side away from the socket housing (2) and is provided with a second cover plate (25) for sealing the opening.

4. A flameproof high-voltage cable connector for mining according to claim 3, characterized in that: The first cover plate (15) and the second cover plate (25) are both made of transparent material; an installation groove (141) is provided on the inner edge of the opening of the first protective shell (14); one side of the first cover plate (15) is hinged to the inner wall of the installation groove (141) via a rotating shaft; and the other side of the first cover plate (15) can be rotated and inserted into the installation groove (141).

5. A flameproof high-voltage cable connector for mining according to claim 4, characterized in that: A support rod (3) is fixedly provided on the first protective shell (14), a support seat (31) is fixedly provided on the end of the support rod (3) away from the first protective shell (14), and a waist-shaped fixing hole (311) is provided on the support seat (31).

6. A flameproof high-voltage cable connector for mining according to claim 5, characterized in that: An oblique support rod (4) is provided outside the plug housing (1), and two ends of the oblique support rod (4) are respectively connected and fixed to the first protective shell (14) and the support rod (3).

7. A flameproof high-voltage cable connector for mining according to claim 6, characterized in that: The side of the first protective shell (14) away from the plug housing (1) is hinged to one end of the diagonal support rod (4), and the other end of the diagonal support rod (4) is detachably connected to the outer side of the support rod (3).

8. A flameproof high-voltage cable connector for mining according to claim 7, characterized in that: An extension rod (43) is fixedly provided at the end of the diagonal support rod (4) away from the support rod (3); the extension rod (43) can abut or be displaced with the side of the first cover plate (15) away from the first protective shell (14) as the diagonal support rod (4) rotates.

9. A flameproof high-voltage cable connector for mining according to claim 7, characterized in that: A cleaning cotton (42) is fixedly provided on one side of the diagonal support rod (4), and the cleaning cotton (42) can abut or be displaced with the side of the first cover plate (15) away from the first protective shell (14) as the diagonal support rod (4) rotates.

10. A flameproof high-voltage cable connector for mining according to claim 7, characterized in that: A locking through hole (41) is provided on the end of the diagonal support rod (4) away from the first protective shell (14), a locking screw hole (32) that can overlap with the locking through hole (41) is provided on the support rod (3), and a butterfly bolt (5) is provided on the outside of the diagonal support rod (4) and passes through the locking through hole (41) and is then screwed into the locking screw hole (32).

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