Mining flame-proof high-voltage cable connector

Abstract

The invention relates to the technical field of cable connectors, and discloses a mining flame-proof high-voltage cable connector, which comprises a socket body and a plug body, a locking structure for connecting the socket body and the plug body is arranged between the socket body and the plug body, and a pressing structure for clamping a cable is arranged on the plug body. A through hole is formed in the plug body, the pressing structure comprises a pressing cap, a rubber ferrule and a baffle ring, the pressing cap is in threaded connection with the outside of the plug body, the rubber ferrule and the baffle ring are arranged in the through hole, the baffle ring is located on the side, away from the pressing cap, of the rubber ferrule, a pressing ring capable of being inserted into the through hole is arranged in the pressing cap, and a first chamfer is formed in the pressing ring. The first chamfer is arranged at the junction of the end face, facing the socket body, of the pressing ring and the inner wall of the pressing ring, the pressing ring can drive the rubber ferrule to deform towards the center of the through hole, and the sealing performance of the plug body and the cable is improved.

Description

Technical Field

[0001] This application relates to the technical field of cable connectors, and more particularly to a mining explosion-proof high-voltage cable connector. Background Art

[0002] Mining explosion-proof high-voltage cable connectors are mainly used in underground coal mines. The mining explosion-proof high-voltage cable connector serves as a coupling connection device between combined switches, load switches, motors, transformers, and cable terminals.

[0003] In related technologies, a high-voltage cable connector includes a socket body and a plug body. A through hole is provided in the plug body, and a cable is disposed in the through hole.

[0004] The diameter of a common cable is smaller than the inner diameter of the through hole, so that workers can connect the cable to the plug body. However, the cable connector is mainly used in underground coal mines where there is a lot of dust in the environment. The dust easily enters the plug body through the gap between the cable and the inner wall of the through hole, affecting the use of the cable connector. Summary of the Invention

[0005] In order to improve the sealing performance between the cable and the plug body, this application provides a mining explosion-proof high-voltage cable connector.

[0006] A mining explosion-proof high-voltage cable connector provided by this application adopts the following technical solutions: A mining explosion-proof high-voltage cable connector includes a socket body and a plug body. A locking structure for connecting the two is provided between the socket body and the plug body. A pressing structure for clamping the cable is provided on the plug body. A through hole is provided in the plug body. The pressing structure includes a compression cap threadedly connected to the outside of the plug body, a rubber sleeve ring and a retaining ring disposed in the through hole. The retaining ring is located on the side of the rubber sleeve ring away from the compression cap. A pressing ring capable of being inserted into the through hole is provided in the compression cap. A first chamfer is provided on the pressing ring. The first chamfer is provided at the junction of the end face of the pressing ring facing the socket body and the inner wall of the pressing ring. The pressing ring can drive the rubber sleeve ring to deform towards the center of the through hole.

[0007] By adopting the above technical solutions, rotate the compression cap to make the compression cap move towards the socket body, that is, drive the pressing ring to move towards the socket body, so that the rubber sleeve ring contacts the first chamfer. As the pressing ring continues to move towards the socket body, the pressing ring drives the rubber sleeve ring to deform towards the center of the through hole, clamping the cable by the rubber sleeve to achieve stable connection between the cable and the plug body, improving the sealing performance between the cable and the plug body, and preventing dust and foreign objects from entering the connector interior.

[0008] Optionally, the locking structure includes a first mounting plate disposed outside the socket body and a second mounting plate disposed outside the plug body. An end face of the first mounting plate facing the second mounting plate is provided with a first mounting hole, an end face of the second mounting plate facing the first mounting plate is provided with a second mounting hole, and a mounting bolt for connecting the two is disposed between the first mounting plate and the second mounting plate.

[0009] By adopting the above technical solution, the first mounting plate and the second mounting plate are fitted together to align the first mounting hole and the second mounting hole. The mounting bolt passes through the second mounting hole and is threadedly connected to the first mounting hole.

[0010] Optionally, a receiving hole is provided on an end face of the socket body. An installation ring block capable of being inserted into the socket body is disposed on a side of the plug body facing the socket body. A tapered hole communicating with the receiving hole is provided on an outer circumferential surface of the socket body. The locking structure includes an operating ring rotatably connected outside the socket body and a ball disposed in the tapered hole. The diameter of the ball is smaller than the inner diameter of the tapered hole away from the receiving hole and larger than the inner diameter of the tapered hole close to the receiving hole. An installation groove for the ball to be inserted is provided on an outer circumferential surface of the installation ring block, and a groove for the ball to be embedded is provided on an inner wall of the operating ring.

[0011] By adopting the above technical solution, first drive the operating ring to rotate to align the groove with the tapered hole, then insert the installation ring block into the receiving hole, so that the installation ring block drives the ball out of the receiving hole until the installation groove is aligned with the tapered hole, and then drive the operating ring to rotate. The operating ring drives the ball to move so that the ball is inserted into the installation groove, connecting the installation ring block and the socket body, and realizing the quick connection of the socket body and the plug body.

[0012] Optionally, a first limiting structure capable of restricting the rotation of the operating ring is provided on the socket body. A first limiting groove is provided on an outer circumferential surface of the socket body. The first limiting structure includes a first limiting block and a first spring disposed in the first limiting groove. The first spring is in a compressed state. One end of the first spring abuts against a bottom wall of the first limiting groove, and the other end of the first spring abuts against the first limiting block. An operating groove for the first limiting block to be inserted is provided on an inner wall of the operating ring, and an operating member capable of driving the first limiting block out of the operating groove is provided on the operating ring; when the first limiting block is inserted into the operating groove, the groove is aligned with the tapered hole.

[0013] By adopting the above technical solution, the operating ring is driven to rotate so that the first limit groove is aligned with the operating groove, and the first spring reset drives the first limit block to move, so that the first limit block is partially inserted into the operating groove, and the operating ring is limited, so that the operating ring is not easy to rotate around the socket body. At this time, the groove is aligned with the tapered hole, and the ball can enter the groove. The staff can insert the installation ring block into the accommodating hole or pull the installation ring block out of the accommodating hole, that is, connect the plug body with the socket body or separate the plug body from the socket body; the operating member can drive the first limit block inserted into the operating groove to move, so that the first limit block is separated from the operating groove. Even if the operating ring and the socket body are unlocked, the staff can drive the operating ring to rotate.

[0014] Optionally, an operating chamfer is provided on the operating ring, and the operating chamfer slope is arranged at the junction of the inner wall of the operating groove along the circumference of the operating ring and the inner wall of the operating ring.

[0015] By adopting the above technical solution, the operating chamfer has a guiding function. When the first limit block abuts against the operating chamfered inclined surface, the first spring can move the first limit block along the operating chamfered inclined surface, so that the first limit block can be smoothly inserted into the operating groove.

[0016] Optionally, an operating hole is formed in the bottom wall of the operating groove, and the operating member includes an operating block arranged in the operating groove, and an operating rod capable of being passed through the operating hole is formed on the end surface of the operating block away from the axis of the operating ring, and one end of the operating rod away from the operating block extends out of the operating hole.

[0017] By adopting the above technical solution, the operating rod is driven to move toward the socket body, so that the operating rod drives the operating block and the first limit block to move, so that the first limit block is disengaged from the operating groove. When the first limit block is completely embedded in the first limit groove, the staff can drive the operating ring to rotate, so that the operating groove and the first limit groove are offset.

[0018] Optionally, a second limiting structure capable of limiting the rotation of the operating ring is provided on the socket body, and a second limiting groove is provided on the outer circumferential surface of the socket body. The second limiting structure includes a second limiting block and a second spring arranged in the second limiting groove, and the second spring is in a compressed state, one end of the second spring abuts against the bottom wall of the second limiting groove, and the other end of the second spring abuts against the second limiting block, and the second limiting block can be inserted into the operating groove; when the second limiting block is inserted into the operating groove, the groove is staggered with the tapered hole.

[0019] By adopting the above technical solution, the operating ring is driven to rotate so that the second limit groove is aligned with the operating groove. The second spring resets and drives the second limit block to move, so that the second limit block is partially inserted into the operating groove, and the operating ring is limited, so that the operating ring is not easy to rotate around the socket body. At this time, the groove and the tapered hole are staggered. Since the ball cannot enter the groove, the ball remains inserted into the accommodating hole. If the ball is embedded in the installation groove at this time, the installation ring block cannot move along the axial direction of the accommodating hole, that is, the socket body and the plug body remain in a locked state, and the two are not easy to separate.

[0020] Optionally, a limiting rod is provided on the inner wall of the accommodating hole, and when the mounting ring block abuts against the limiting rod, the mounting groove is aligned with the tapered hole.

[0021] By adopting the above technical solution, the limiting rod has a limiting function, and the mounting ring block on the plug body is inserted into the accommodating hole. When the mounting ring block abuts against the limiting rod, the mounting ring block is restricted from continuing to be inserted into the accommodating hole. At this time, the mounting groove is aligned with the tapered hole, which also facilitates the insertion of the ball into the mounting groove.

[0022] Optionally, a limiting hole is provided on the bottom wall of the second limiting groove, the limiting rod is inserted into the limiting hole, and one end of the limiting rod is connected to the second limiting block.

[0023] By adopting the above technical solution, the limiting rod moves along the axial direction of the limiting hole, playing a guiding role, so that the second limiting block can only move along the axial direction of the limiting rod.

[0024] Optionally, the second spring sleeve is arranged outside the limiting rod.

[0025] By adopting the above technical solution, when the second spring is compressed and deformed or reset, the position of the second spring is not easily offset, so that the second spring stably applies a force to the second limit block.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Drive the pressing cap to rotate, so that the pressing cap moves toward the socket body, that is, drive the pressing ring to move toward the socket body, so that the rubber ring contacts the first chamfer. As the pressing ring continues to move toward the socket body, the pressing ring drives the rubber ring to deform toward the center of the through hole, so that the rubber sleeve clamps the cable, thereby achieving a stable connection between the cable and the plug body, improving the sealing between the cable and the plug body, and preventing dust and foreign matter from entering the connector; 2. The first limiting structure limits the rotation of the operating ring, so that the tapered hole and the groove remain in a connected state, making it easy for the staff to connect or separate the socket body and the plug body; the second limiting structure limits the rotation of the operating ring, so that the tapered hole and the groove remain in a staggered state, making it difficult for the ball to fall out of the accommodating hole. If the ball is in the mounting groove, the mounting ring block is not easy to fall out of the accommodating hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for description in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0028] Figure 1 is a schematic structural diagram of Embodiment 1 of the present application; Figure 2 is along Figure 1 the sectional view taken along line A-A in Figure 3 is a partial sectional view highlighting the pressing structure; Figure 4 is a schematic structural diagram of Embodiment 2; Figure 5 is along Figure 4 the sectional view taken along line B-B in Figure 6 is along Figure 4 the sectional view taken along line C-C in Figure 7 is Figure 6 the enlarged view of part D in Figure 8 is a sectional view highlighting the locking structure; Figure 9 is a sectional view highlighting the first limiting structure; Figure 10 is Figure 9 the enlarged view of part E in

[0029] Reference numerals: 1, socket body; 11, receiving hole; 12, handle; 121, grip part; 122, mounting part; 13, tapered hole; 14, first limiting groove; 15, second limiting groove; 16, limiting hole; 2, plug body; 21, plug front body; 211, mounting ring block; 2111, mounting groove; 22, plug rear body; 221, through hole; 222, retaining ring; 3, pressing structure; 31, compression cap; 311, driving ring; 32, pressure ring; 321, snap ring groove; 33, rubber sleeve ring; 34, washer; 4, locking structure; 41, first mounting plate; 411, first mounting hole; 42, second mounting plate; 421, countersunk head groove; 43, mounting bolt; 44, operating ring; 441, groove; 442, operating groove; 443, operating hole; 45, ball; 5, first limiting structure; 51, first limiting block; 52, first spring; 6, second limiting structure; 61, second limiting block; 62, second spring; 63, limiting rod; 7, operating member; 71, operating rod; 72, operating block; 73, operating disk. Detailed implementation manners

[0030] The following will further elaborate on this application in conjunction with the attached Figure 1-10 drawings.

[0031] Embodiment 1 This embodiment discloses a mining flameproof high-voltage cable connector. Referring to Figure 1 the drawings, a mining flameproof high-voltage cable connector includes a socket body 1 and a plug body 2. Both the socket body 1 and the plug body 2 are made of explosion-proof materials.

[0032] Referring to Figure 1 and Figure 2 the drawings, a receiving hole 11 is formed on the end face of the socket body 1. Accessories such as a P-line plug and a feeder plug are arranged in the receiving hole 11.

[0033] Referring to Figure 1 the drawings, a handle 12 is fixedly connected to the outer circumferential surface of the socket body 1. The handle 12 includes a grip portion 121 and a mounting portion 122. There are two mounting portions 122, and both mounting portions 122 are fixedly connected to the end face of the grip portion 121 facing the socket body 1. The end of the mounting portion 122 away from the grip portion 121 is fixedly connected to the outer circumferential surface of the socket body 1.

[0034] Referring to Figure 1 and Figure 2 the drawings, there are two plug bodies 2, and the socket body 1 is located between the two plug bodies 2. The socket body 1 includes a plug front body 21 and a plug rear body 22, and the plug front body 21 and the plug rear body 22 are threadedly connected. A mounting ring block 211 is fixedly connected to the end of the plug front body 21 away from the plug rear body 22, and the mounting ring block 211 can be inserted into the receiving hole 11.

[0035] Referring to Figure 2 and Figure 3 the drawings, a through hole 221 is formed in the plug rear body 22. Accessories such as a feeder socket and a P-line plug are arranged in the through hole 221. The feeder socket can be inserted and matched with the feeder plug, and the P-line socket can be inserted and matched with the P-line plug.

[0036] Referring to Figure 2 and Figure 3 the drawings, a pressing structure 3 is arranged on the plug rear body 22, and the pressing structure 3 is used to press the cable. The pressing structure 3 includes a compression cap 31, a compression ring 32, a rubber sleeve ring 33 and a washer 34. A retaining ring 222 is fixedly connected to the inner wall of the through hole 221.

[0037] Referring to Figure 2 and Figure 3, the compression cap 31 is threadedly connected to the rear body 22 of the plug, and a driving ring 311 is fixedly connected to the inner wall of the compression cap 31. A pressure ring 32 is disposed within the compression cap 31, and the pressure ring 32 can be inserted into the through hole 221. A snap ring groove 321 is formed on the outer circumferential surface of the pressure ring 32, and the driving ring 311 is inserted into the snap ring groove 321. The driving ring 311 can drive the pressure ring 32 to move toward the retaining ring 222. A first chamfer is formed on the pressure ring 32, and the inclined surface of the first chamfer is disposed at the junction of the end face of the pressure ring 32 facing the retaining ring 222 and the inner wall of the pressure ring 32.

[0038] Referring to Figure 2 and Figure 3 , a rubber grommet 33 and a washer 34 are both disposed within the through hole 221. The washer 34 is located on the side of the retaining ring 222 facing the pressure ring 32. The rubber grommet 33 is located on the side of the washer 34 facing the pressure ring 32. The rubber grommet 33 is provided with a second chamfer and a third chamfer. The inclined surface of the second chamfer is disposed at the junction of the end face of the rubber grommet 33 facing the pressure ring 32 and the outer circumferential surface of the rubber grommet 33. The inclined surface of the third chamfer is disposed at the junction of the end face of the rubber grommet 33 facing the retaining ring 222 and the inner circumferential surface of the rubber grommet 33. When the pressure ring 32 moves toward the washer 34, the first chamfer can contact the second chamfer. As the pressure ring 32 continues to move, the pressure ring 32 can drive the rubber grommet 33 to deform toward the center of the through hole 221.

[0039] Referring to Figure 1 , a locking structure 4 for connecting the socket body 1 and the front body 21 of the plug is provided between the socket body 1 and the front body 21 of the plug. The locking structure 4 includes a first mounting plate 41, a second mounting plate 42, and a mounting bolt 43.

[0040] Referring to Figure 1 , the first mounting plate 41 is fixedly connected to the outer circumferential surface of the socket body 1. The end face of the first mounting plate 41 away from the handle 12 is coplanar with the end face of the socket body 1. Four first mounting holes 411 are formed in the first mounting plate 41 along the end face of the socket body 1. In other embodiments, the first mounting holes 411 can be provided as two, three, or other numbers.

[0041] Referring to Figure 1 , the second mounting plate 42 is fixedly connected to the outer circumferential surface of the front body 21 of the plug. Four countersunk head grooves 421 are formed on the side of the second mounting plate 42 away from the first mounting plate 41, and a second mounting hole is formed in the bottom wall of each countersunk head groove 421. The four second mounting holes are respectively aligned with one of the first mounting holes 411.

[0042] Referring to Figure 1 , the number of the mounting bolts 43 is the same as the number of the first mounting holes 411. The mounting bolts 43 pass through the countersunk head grooves 421, the second mounting holes and are threadedly connected to the first mounting holes 411.

[0043] The implementation principle of Embodiment 1 is as follows: Insert the cable into the through hole 221, then drive the compression cap 31 to rotate, so that the compression cap 31 and the compression ring 32 move together towards the socket body 1 until the first chamfer contacts the second chamfer. As the compression ring 32 continues to move towards the socket body 1, the compression ring 32 drives the rubber sleeve 33 to deform towards the center of the through hole 221, so that the rubber sleeve 33 compresses the cable.

[0044] Embodiment 2 Refer to Figure 4 and Figure 5 In this embodiment, the difference from Embodiment 1 is that the locking structure 4 includes an operation ring 44 and a ball 45.

[0045] Refer to Figure 5 On the outer circumferential surface of the socket body 1, two tapered holes 13 are provided, and the two tapered holes 13 are circumferentially distributed around the axis of the accommodation hole 11. The inner diameter of the tapered hole 13 gradually increases in the direction away from the axis of the accommodation hole 11.

[0046] Refer to Figure 5 On the outer circumferential surface of the mounting ring block 211, a mounting groove 2111 is provided, and the mounting groove 2111 can accommodate the ball 45.

[0047] Refer to Figure 5 There are two balls 45, and each of the two balls 45 is disposed in a tapered hole 13. The diameter of the ball 45 is smaller than the inner diameter of the tapered hole 13 away from the accommodation hole 11, and the diameter of the ball 45 is larger than the inner diameter of the tapered hole 13 close to the accommodation hole 11.

[0048] Refer to Figure 5 The operation ring 44 is rotatably connected to the outside of the socket body 1, and the operation ring 44 can block the tapered hole 13. A limiting ring block is fixedly connected to the inner wall of the operation ring 44. A limiting ring groove is provided on the outer circumferential surface of the socket body 1, and the limiting ring block is inserted into the limiting ring groove. A groove 441 is provided on the inner wall of the operation ring 44, and the groove 441 can accommodate the ball 45.

[0049] Refer to Figure 6 and Figure 7 On the socket body 1, two first limiting structures 5 and two second limiting structures 6 are provided, and both the first limiting structure 5 and the second limiting structure 6 can limit the rotation of the operation ring 44.

[0050] Refer to Figure 6 and Figure 7 The two first limiting structures 5 are circumferentially and arrayedly distributed around the axis of the accommodation hole 11. The first limiting structure 5 includes a first limiting block 51 and a first spring 52.

[0051] Refer to Figure 6 and Figure 7, two first limiting grooves 14 are formed on the outer circumferential surface of the socket body 1, and the two first limiting grooves 14 are circumferentially distributed around the axis of the accommodating hole 11. The first limiting block 51 and the first spring 52 are both arranged in the first limiting groove 14. The first spring 52 is in a compressed state, one end of the first spring 52 abuts against the first limiting block 51, and the other end of the first spring 52 abuts against the bottom wall of the first limiting groove 14.

[0052] Referring to Figure 7 , two second limiting structures 6 are circumferentially and arrayedly distributed around the axis of the accommodating hole 11. The second limiting structure 6 includes a second limiting block 61 and a second spring 62.

[0053] Referring to Figure 7 , two second limiting grooves 15 are formed on the outer circumferential surface of the socket body 1, and the two second limiting grooves 15 are circumferentially distributed around the axis of the accommodating hole 11. A limiting hole 16 is formed in the bottom wall of the second limiting groove 15, and the limiting hole 16 communicates with the accommodating hole 11.

[0054] Referring to Figure 7 , the second limiting block 61 and the second spring 62 are both arranged in the second limiting groove 15. The second spring 62 is in a compressed state, one end of the second spring 62 abuts against the second limiting block 61, and the other end of the second spring 62 abuts against the bottom wall of the second limiting groove 15.

[0055] Referring to Figure 7 , a limiting rod 63 is fixedly connected to the end face of the second limiting block 61 facing the second spring 62, and the limiting rod 63 is inserted into the limiting hole 16. The second spring 62 is sleeved outside the limiting rod 63.

[0056] Referring to Figure 7 , two operation grooves 442 are formed on the inner wall of the operation ring 44, and the two operation grooves 442 are circumferentially and arrayedly distributed around the operation ring 44. An operation chamfer is formed on the operation ring 44, and the chamfer slope is arranged at the junction of the inner wall of the operation groove 442 along the circumferential direction of the operation ring 44 and the inner wall of the operation ring 44. The operation groove 442 can be inserted by the first limiting block 51 or the second limiting block 61.

[0057] Referring to Figure 5 and Figure 7, when the first limiting block 51 is inserted into the operation groove 442, the conical hole 13 is aligned with the groove 441. At this time, the ball 45 can move in a direction away from the axis of the accommodating hole 11, so that a part of the ball 45 is located in the groove 441 and another part of the ball 45 is located in the conical hole 13. At the same time, the operation groove 442 and the second limiting groove 15 are in a staggered state, the second limiting block 61 abuts against the inner wall of the operation ring 44, and one end of the limiting rod 63 away from the second limiting block 61 is inserted into the accommodating hole 11. At this time, the plug front body 21 is connected to the socket body 1, and the mounting ring block 211 is inserted into the accommodating hole 11. The mounting ring block 211 can drive the ball 45 out of the accommodating hole 11. When the mounting ring block 211 abuts against the limiting rod 63, the mounting groove 2111 is aligned with the conical hole 13. When the subsequent ball 45 is reinserted into the accommodating hole 11, the ball 45 is also inserted into the mounting groove 2111.

[0058] Refer to Figure 5 and Figure 7 , when the second limiting block 61 is inserted into the operation groove 442, the conical hole 13 is staggered with the groove 441. At this time, the ball 45 abuts against the inner wall of the operation ring 44, so that a part of the ball 45 is inserted into the accommodating hole 11 and another part of the ball 45 is located in the conical hole 13.

[0059] Refer to Figure 7 , an operating member 7 is arranged on the operation ring 44, and the operating member 7 is used for moving the first limiting block 51 or the second limiting block 61. The operating member 7 includes an operating rod 71 and an operating block 72. An operating hole 443 is formed in the bottom wall of the operation groove 442.

[0060] Refer to Figure 7 , the operating block 72 is arranged in the operation groove 442. One end of the operating rod 71 is fixedly connected to the end face of the operating block 72 away from the axis of the operation ring 44. The other end of the operating rod 71 passes through the operating hole 443 and extends out of the operation ring 44. An operating disk 73 is fixedly connected to the other end of the operating rod 71 away from the operating block 72. When the operating disk 73 abuts against the outer circumferential surface of the operation ring 44, the operating block 72 pushes the first limiting block 51 or the second limiting block 61 out of the operation groove 442.

[0061] The implementation principle of Embodiment 2 is as follows: First, drive the operation ring 44 to rotate so that the operation slot 442 aligns with the first limit slot 14. The first spring 52 resets to drive the first limit block 51 to insert into the operation slot 442, restricting the rotation of the operation ring 44 and aligning the groove 441 with the tapered hole 13. Second, insert the mounting ring block 211 into the accommodating hole 11 until the mounting ring block 211 abuts against the limit rod 63, and at the same time align the mounting slot 2111 with the tapered hole 13. Third, drive the operation rod 71 to move so that the operation block 72 pushes the first limit block 51 out of the operation slot 442. Finally, drive the operation ring 44 to rotate so that the operation ring 44 drives the ball 45 to move, and the ball 45 inserts into the mounting slot 2111 until the operation slot 442 aligns with the second limit slot 15. The second spring 62 resets to drive the second limit block 61 to insert into the operation slot 442, restricting the rotation of the operation ring 44.

[0062] Embodiment 3 Refer to Figure 8 , the difference between this embodiment and Embodiment 1 is that the locking structure 4 further includes an operation ring 44 and a ball 45.

[0063] Refer to Figure 8 , on the outer circumferential surface of the socket body 1, two tapered holes 13 are provided, and the two tapered holes 13 are circumferentially distributed around the axis of the accommodating hole 11. The inner diameter of the tapered hole 13 gradually increases in the direction away from the axis of the accommodating hole 11.

[0064] Refer to Figure 8 , on the outer circumferential surface of the mounting ring block 211, a mounting slot 2111 is provided, and the mounting slot 2111 can accommodate the ball 45 to insert.

[0065] Refer to Figure 8 , two balls 45 are provided, and each of the two balls 45 is disposed in one tapered hole 13. The diameter of the ball 45 is smaller than the inner diameter of the tapered hole 13 away from the accommodating hole 11, and the diameter of the ball 45 is larger than the inner diameter of the tapered hole 13 close to the accommodating hole 11.

[0066] Refer to Figure 8 , the operation ring 44 is rotatably connected to the outside of the socket body 1, and the operation ring 44 can block the tapered hole 13. A limit ring block is fixedly connected to the inner wall of the operation ring 44. A limit ring groove is provided on the outer circumferential surface of the socket body 1, and the limit ring block is inserted into the limit ring block. A groove 441 is provided on the inner wall of the operation ring 44, and the groove 441 can accommodate the ball 45 to insert.

[0067] Refer to Figure 9 and Figure 10 , two first limit structures 5 and two second limit structures 6 are provided on the socket body 1, and both the first limit structure 5 and the second limit structure 6 can restrict the rotation of the operation ring 44.

[0068] Refer toFigure 9 And Figure 10 , two first limiting structures 5 are circumferentially and arrayedly distributed around the axis of the accommodating hole 11. The first limiting structure 5 includes a first limiting block 51 and a first spring 52.

[0069] Referring to Figure 9 And Figure 10 , two first limiting grooves 14 are formed on the outer circumferential surface of the socket body 1, and the two first limiting grooves 14 are circumferentially distributed around the axis of the accommodating hole 11. The first limiting block 51 and the first spring 52 are both arranged in the first limiting groove 14. The first spring 52 is in a compressed state, one end of the first spring 52 abuts against the first limiting block 51, and the other end of the first spring 52 abuts against the bottom wall of the first limiting groove 14.

[0070] Referring to Figure 9 And Figure 10 , two second limiting structures 6 are circumferentially and arrayedly distributed around the axis of the accommodating hole 11. The second limiting structure 6 includes a second limiting block 61 and a second spring 62.

[0071] Referring to Figure 10 , two second limiting grooves 15 are formed on the outer circumferential surface of the socket body 1, and the two second limiting grooves 15 are circumferentially distributed around the axis of the accommodating hole 11. A limiting hole 16 is formed in the bottom wall of the second limiting groove 15, and the limiting hole 16 communicates with the accommodating hole 11.

[0072] Referring to Figure 10 , the second limiting block 61 and the second spring 62 are both arranged in the second limiting groove 15. The second spring 62 is in a compressed state, one end of the second spring 62 abuts against the second limiting block 61, and the other end of the second spring 62 abuts against the bottom wall of the second limiting groove 15.

[0073] Referring to Figure 10 , a limiting rod 63 is fixedly connected to the end face of the second limiting block 61 facing the second spring 62, and the limiting rod 63 is inserted into the limiting hole 16. The second spring 62 is sleeved outside the limiting rod 63.

[0074] Referring to Figure 10 , two operating grooves 442 are formed on the inner wall of the operating ring 44, and the two operating grooves 442 are circumferentially and arrayedly distributed around the circumference of the operating ring 44. An operating chamfer is formed on the operating ring 44, and the chamfer slope is arranged at the junction of the inner wall of the operating groove 442 along the circumferential direction of the operating ring 44 and the inner wall of the operating ring 44. The operating groove 442 can be inserted by the first limiting block 51 or the second limiting block 61.

[0075] Referring to Figure 8 And Figure 10, when the first limiting block 51 is inserted into the operation groove 442, the conical hole 13 is aligned with the groove 441. At this time, the ball 45 can move in a direction away from the axis of the accommodation hole 11, so that a part of the ball 45 is located in the groove 441 and another part of the ball 45 is located in the conical hole 13. At the same time, the operation groove 442 and the second limiting groove 15 are in a staggered state, the second limiting block 61 abuts against the inner wall of the operation ring 44, and one end of the limiting rod 63 away from the second limiting block 61 is inserted into the accommodation hole 11. At this time, the plug front body 21 is connected to the socket body 1, and the mounting ring block 211 is inserted into the accommodation hole 11. The mounting ring block 211 can drive the ball 45 out of the accommodation hole 11. When the mounting ring block 211 abuts against the limiting rod 63, the mounting groove 2111 is aligned with the conical hole 13. When the subsequent ball 45 is re-inserted into the accommodation hole 11, the ball 45 is also inserted into the mounting groove 2111.

[0076] Refer to Figure 8 and Figure 10 , when the second limiting block 61 is inserted into the operation groove 442, the conical hole 13 is staggered with the groove 441. At this time, the ball 45 abuts against the inner wall of the operation ring 44, so that a part of the ball 45 is inserted into the accommodation hole 11 and another part of the ball 45 is located in the conical hole 13.

[0077] Refer to Figure 10 , an operating member 7 is arranged on the operation ring 44, and the operating member 7 is used for moving the first limiting block 51 or the second limiting block 61. The operating member 7 includes an operating rod 71 and an operating block 72. An operation hole 443 is formed in the bottom wall of the operation groove 442.

[0078] Refer to Figure 10 , the operating block 72 is arranged in the operation groove 442. One end of the operating rod 71 is fixedly connected to the end face of the operating block 72 away from the axis of the operation ring 44. The other end of the operating rod 71 passes through the operation hole 443 and extends out of the operation ring 44. An operating disc 73 is fixedly connected to the other end of the operating rod 71 away from the operating block 72. When the operating disc 73 abuts against the outer circumferential surface of the operation ring 44, the operating block 72 pushes the first limiting block 51 or the second limiting block 61 out of the operation groove 442.

[0079] The implementation principle of Embodiment 3 is as follows: First, drive the operation ring 44 to rotate so that the operation groove 442 is aligned with the first limit groove 14. The first spring 52 is reset to drive the first limit block 51 to insert into the operation groove 442, restricting the rotation of the operation ring 44 and aligning the groove 441 with the tapered hole 13. Second, insert the mounting ring block 211 into the accommodating hole 11 until the mounting ring block 211 abuts against the limit rod 63, and at the same time align the mounting groove 2111 with the tapered hole 13. Third, drive the operating rod 71 to move so that the operating block 72 ejects the first limit block 51 out of the operation groove 442. Finally, drive the operation ring 44 to rotate so that the operation ring 44 drives the ball 45 to move, and the ball 45 is inserted into the mounting groove 2111 until the operation groove 442 is aligned with the second limit groove 15. The second spring 62 is reset to drive the second limit block 61 to insert into the operation groove 442, restricting the rotation of the operation ring 44.

[0080] Unless otherwise defined, the technical terms or scientific terms used in this application shall have the ordinary meanings understood by those of ordinary skill in the art to which this application belongs. The terms "first", "second", "third" and similar terms used in the specification and claims of this application do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "a" or "an" do not denote a quantity limitation, but mean that there is at least one. The terms such as "comprising" or "including" mean that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, and do not exclude other elements or objects. The terms such as "upper", "lower", "left" and "right" are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationships may also change accordingly.

[0081] The above are only the preferred embodiments of this application and are not used to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the design concept of this application shall be included in the protection scope of this application.

Claims

1. A flameproof high-voltage cable connector for mining, comprising a socket body (1) and a plug body (2), characterized in that: A locking structure (4) is provided between the socket body (1) and the plug body (2) to connect the two. A clamping structure (3) for clamping a cable is provided on the plug body (2). A through hole (221) is provided in the plug body (2). The clamping structure (3) comprises a pressure cap (31) threadedly connected to the outside of the plug body (2), a rubber ring (33) and a retaining ring (222) provided in the through hole (221). The retaining ring (222) is located on a side of the rubber ring (33) away from the pressure cap (31). A pressure ring (32) capable of being inserted into the through hole (221) is provided in the pressure cap (31). A first chamfer is provided on the pressure ring (32). The first chamfer is provided at the junction of the end surface of the pressure ring (32) facing the socket body (1) and the inner wall of the pressure ring (32). The pressure ring (32) can drive the rubber ring (33) to deform toward the center of the through hole (221).

2. The flameproof high-voltage cable connector for mining according to claim 1, characterized in that: The locking structure (4) comprises a first mounting plate (41) arranged outside the socket body (1) and a second mounting plate (42) arranged outside the plug body (2); a first mounting hole (411) is provided on the end surface of the first mounting plate (41) facing the second mounting plate (42); a second mounting hole is provided on the end surface of the second mounting plate (42) facing the first mounting plate (41); and a mounting bolt (43) is provided between the first mounting plate (41) and the second mounting plate (42) to connect the two.

3. The flameproof high-voltage cable connector for mining according to claim 1, characterized in that: The end surface of the socket body (1) is provided with a receiving hole (11); the plug body (2) is provided with a mounting ring block (211) which can be inserted into the socket body (1); the outer circumferential surface of the socket body (1) is provided with a tapered hole (13) which is connected to the receiving hole (11); the locking structure (4) comprises an operating ring (44) which is rotatably connected to the outside of the socket body (1) and a ball (45) which is arranged in the tapered hole (13); the diameter of the ball (45) is smaller than the inner diameter of the tapered hole (13) away from the receiving hole (11) and larger than the inner diameter of the tapered hole (13) close to the receiving hole (11); the outer circumferential surface of the mounting ring block (211) is provided with a mounting groove (2111) into which the ball (45) can be inserted; the inner wall of the operating ring (44) is provided with a groove (441) into which the ball (45) can be embedded.

4. The flameproof high-voltage cable connector for mining according to claim 3, characterized in that: The socket body (1) is provided with a first limiting structure (5) capable of limiting the rotation of the operating ring (44); a first limiting groove (14) is provided on the outer circumferential surface of the socket body (1); the first limiting structure (5) comprises a first limiting block (51) and a first spring (52) arranged in the first limiting groove (14); the first spring (52) is in a compressed state; one end of the first spring (52) abuts against the bottom wall of the first limiting groove (14); the other end of the first spring (52) abuts against the first limiting block (51); an operating groove (442) capable of being inserted into the first limiting block (51) is provided on the inner wall of the operating ring (44); an operating member (7) capable of driving the first limiting block (51) to disengage from the operating groove (442) is provided on the operating ring (44); when the first limiting block (51) is inserted into the operating groove (442), the groove (441) is aligned with the tapered hole (13).

5. The flameproof high-voltage cable connector for mining according to claim 4, characterized in that: The operating ring (44) is provided with an operating chamfer, and the operating chamfer slope is arranged at the junction of the inner wall of the operating groove (442) along the circumference of the operating ring (44) and the inner wall of the operating ring (44).

6. The flameproof high-voltage cable connector for mining according to claim 4, characterized in that: The bottom wall of the operating groove (442) is provided with an operating hole (443); the operating member (7) comprises an operating block (72) arranged in the operating groove (442); an end surface of the operating block (72) away from the axis of the operating ring (44) is provided with an operating rod (71) capable of being inserted into the operating hole (443); one end of the operating rod (71) away from the operating block (72) extends out of the operating hole (443).

7. The flameproof high-voltage cable connector for mining according to claim 4, characterized in that: The socket body (1) is provided with a second limiting structure (6) capable of limiting the rotation of the operating ring (44); a second limiting groove (15) is provided on the outer circumferential surface of the socket body (1); the second limiting structure (6) comprises a second limiting block (61) and a second spring (62) arranged in the second limiting groove (15); the second spring (62) is in a compressed state; one end of the second spring (62) abuts against the bottom wall of the second limiting groove (15); the other end of the second spring (62) abuts against the second limiting block (61); the second limiting block (61) can be inserted into the operating groove (442); when the second limiting block (61) is inserted into the operating groove (442), the groove (441) is offset from the tapered hole (13).

8. The flameproof high-voltage cable connector for mining according to claim 7, characterized in that: A limiting rod (63) is provided on the inner wall of the accommodating hole (11), and when the mounting ring block (211) abuts against the limiting rod (63), the mounting groove (2111) is aligned with the tapered hole (13).

9. A flameproof high-voltage cable connector for mining according to claim 8, characterized in that: The bottom wall of the second limiting groove (15) is provided with a limiting hole (16), the limiting rod (63) is inserted into the limiting hole (16), and one end of the limiting rod (63) is connected to the second limiting block (61).

10. The flameproof high-voltage cable connector for mining according to claim 9, characterized in that: The second spring (62) is sleeved outside the limiting rod (63).

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