CN221508631U

CN221508631U - Quick cable connecting device

Info

Publication number: CN221508631U
Application number: CN202322901629.0U
Authority: CN
Inventors: 谢兴全; 谢崇
Original assignee: Xiangshan Tianhe Automation Equipment Co ltd
Current assignee: Xiangshan Tianhe Automation Equipment Co ltd
Priority date: 2023-10-25
Filing date: 2023-10-25
Publication date: 2024-08-09
Anticipated expiration: 2033-10-25

Abstract

The utility model discloses a cable quick connecting device, which comprises a first connector: the first connecting structure is arranged in a first connecting channel of the first insulating shell, a conductive column and a first connecting cavity for inserting a cable conductive wire are formed on a conductive connecting piece of the first connecting structure, and a first fastener cable conductive wire is arranged on the first connecting cavity for fixing; a second connector: the second connecting structure is arranged in a second connecting channel of the second insulating shell, a second connecting cavity for inserting a conductive column and a third connecting cavity for inserting a conductive wire of the cable are formed on a conductive connecting sleeve of the second connecting structure, and a second fastener is arranged on the second connecting cavity to fix the conductive wire of the cable; the plug-in parts of the second insulating shell are mutually locked through the quick connecting structure after being inserted into the plug-in cavities of the first connecting channels. The structure of the cable butt joint device is convenient to install and butt joint cables, and connection is quick and effective.

Description

Quick cable connecting device

Technical Field

The utility model relates to the technical field of quick cable butt joint, in particular to a quick cable connecting device of an electromagnetic stirrer in the steelmaking field.

Background

At present, the steelmaking field of steel mill uses multiple type electromagnetic stirring, and electromagnetic stirring equipment needs to be on line and off line according to production rhythm, and the in-process of on line and off line involves connecting cable quick separation, needs to use cable quick connector. The core rod of the cable quick connector and the cable are in a compression joint mode that damage can be generated to the conductive wires of the cable, such as a mode that a bolt and two conductive plates are matched with each other, when the cable is damaged, the cable and the core rod of the cable quick connector need to be scrapped together, and spare part waste is caused. And when changing the cable, need use crimping equipment crimping cable in the scene, the installation is inconvenient, and stability is poor. Therefore, the method can not meet the requirements of tight production rhythm of steel plants and can not realize rapid treatment of cable breakage faults.

Disclosure of utility model

The utility model aims to solve the defects of the technology and provides a cable quick connecting device.

The utility model relates to a cable quick connecting device, which has the following technical scheme:

The first connector comprises a first insulating shell and a first connecting structure, wherein the first insulating shell comprises a first connecting channel, the first connecting structure is installed in the first connecting channel, the first connecting structure comprises a conductive connecting piece, a conductive column and a first connecting cavity for inserting a cable conductive wire are formed on the conductive connecting piece, a first fastener is installed on the first connecting cavity, so that the cable conductive wire inserted into the first connecting cavity is fixed, and the conductive column is located at the position of the inserting cavity of the first connecting channel;

The second connector comprises a second insulating shell and a second connecting structure, the second insulating shell comprises a second connecting channel, the second connecting structure is installed in the second connecting channel, the second connecting structure comprises a conductive connecting sleeve, a second connecting cavity for inserting a conductive column and a third connecting cavity for inserting a cable conductive wire are formed in the conductive connecting sleeve, and a second fastening piece is installed on the second connecting cavity, so that the cable conductive wire inserted in the second connecting cavity is fixed;

When the conductive column is inserted into the third connecting cavity and the conductive column and the third connecting cavity are connected with each other in a conductive mode, the plug-in part of the second insulating shell is inserted into the plug-in cavity of the first connecting channel, and the plug-in part of the second insulating shell are connected with each other in a locking mode through a quick connecting structure.

According to the cable quick connecting device, the quick connecting structure comprises a plurality of shifting levers and locking grooves arranged on the outer peripheral side wall of the plugging part of the second insulating shell, a plurality of locking holes corresponding to the positions of the locking grooves are formed in the inner peripheral side wall of the plugging cavity of the first connecting channel, the locking ends of the shifting levers are hinged to the locking holes through pin shafts, cam parts corresponding to and matched with the positions of the locking grooves are arranged on the locking ends of the shifting levers, and a plane unlocking part is arranged on one side, opposite to the cam parts, of the locking ends of the shifting levers; when the plug-in part of the second insulating shell and the plug-in cavity of the first connecting channel are in a locking state, the cam part is inserted into the locking groove; when the plug-in part of the second insulating shell and the plug-in cavity of the first connecting channel are in an unlocking state, the cam part is far away from the locking groove.

According to the cable quick connecting device, the locking groove is an annular groove which is annularly arranged along the periphery of the second insulating shell, and the inner wall of the annular groove is arranged in an arc surface.

According to the cable quick connecting device, the outer wall of the plugging part of the second insulating shell is provided with the positioning slot, the inner wall of the plugging cavity of the first connecting channel is provided with the positioning protrusion, or the outer wall of the plugging part of the second insulating shell is provided with the positioning protrusion, and the inner wall of the plugging cavity of the first connecting channel is provided with the positioning slot; the positioning protrusion is inserted into the positioning slot.

According to the cable quick connecting device, the second connecting structure further comprises a conductive spring sleeve, and the middle part of the inner wall of the conductive spring sleeve or the position close to the opening of the third connecting cavity is in an inward bulge state.

According to the cable quick connecting device, the conductive spring housing comprises a plurality of elastic conductive strips arranged in an annular array, the elastic conductive strips are arc-shaped and uniformly distributed on the inner wall of the third connecting cavity, the hook parts of the elastic conductive strips are hooked and sleeved on the edge part of the third connecting cavity, the outer wall of the third connecting cavity on the conductive connecting sleeve is sleeved with a conductive positioning sleeve, the inner wall of the conductive positioning sleeve forms a convex ring, so that the hook parts of the elastic conductive strips are limited between the convex ring and the edge part of the third connecting cavity, a positioning ring is arranged at the bottom of the third connecting cavity, and the other end of the elastic conductive strips is clamped between the outer wall of the positioning ring and the inner wall of the third connecting cavity.

According to the cable quick connecting device, the first insulating housing comprises a first main housing and a first end housing, the first connecting structure further comprises a first sleeve body and a second sleeve body, the first main housing is in sealing connection with the first end housing, one part of the first sleeve body is located in the first main housing, the other part of the first sleeve body and the second sleeve body are located in the first end housing, the plug cavity is formed in the first end housing, a step on the outer wall of the other part of the first sleeve body is limited between one end face of the second sleeve body and one end face of the first main housing, a step on the outer wall of the second sleeve body and a step on the inner wall of the first end housing are mutually clamped, the conductive connecting piece part is located in a channel formed by mutually splicing the first sleeve body and the second sleeve body, the step on the conductive connecting piece is limited between one end face of the first sleeve body and the step on the inner wall of the second sleeve body, and the conductive post penetrates through the second sleeve body and stretches out of the plug cavity.

According to the cable quick connecting device, the second insulating shell comprises a second main shell and a second end shell, the second connecting structure further comprises a third sleeve body and a fourth sleeve body, the second main shell is in sealing connection with the second end shell, one part of the third sleeve body is located in the second main shell, the other part of the third sleeve body and the fourth sleeve body are located in the second end shell, a step on the outer wall of the other part of the third sleeve body and a step on the outer wall of the second sleeve body are mutually attached and limited between one end face of the second main shell and a step on the inner wall of the second end shell, the conductive connecting sleeve is located in a channel formed by mutually splicing the third sleeve body and the fourth sleeve body, and the step on the outer wall of the conductive connecting sleeve is limited between the step on the inner wall of the first sleeve body and one end face of the second sleeve body.

According to the cable quick connecting device, the tail end of the first main shell and the tail end of the second main shell are respectively and hermetically connected with the waterproof sleeve, the first sealing sleeve is arranged in the waterproof sleeve, the second sealing sleeve is positioned and installed on the inner wall of the sealing part of the first sealing sleeve, a plurality of inclined grooves which are arranged in an annular array are formed in the sealing part of the first sealing sleeve so as to form a plurality of sealing claws, the waterproof sleeve is connected with the end cap in a threaded manner, the cable passes through the end cap, the waterproof sleeve, the first sealing sleeve and the second sealing sleeve, the end cap covers the sealing part, and the sealing part is pressed to enable the sealing claws to incline towards the cable direction and draw close to each other so as to enable the second sealing sleeve to be clung to the outer wall of the cable, and the inner cavity of the end cap is a conical cavity.

According to the cable quick connecting device, the first fastening piece and the second fastening piece are fastening screws, threaded holes are formed in the inner walls of the first connecting cavity and the second connecting cavity in a penetrating mode, the fastening screws are in threaded connection with the threaded holes, and the inner side ends of the fastening screws are abutted to the outer walls of the cable conducting wires so as to fix the cable conducting wires.

The cable quick connecting device designed by the utility model has the following beneficial effects:

1. The utility model aims to solve the technical problems of high installation difficulty and poor stability of a cable quick connector during working, and provides a cable quick connector device which has the advantages of simplified structure, convenience in installation and good reliability.

2. The cable conductive wire is fixed with the conductive connecting sleeve and the cable conductive wire is fixed with the conductive connecting piece by the set screw, so that the cable conductive wire installation structure is simple, and when the cable is maintained or replaced by a steel mill, a worker only needs to loosen the set screw to draw out the cable. The working method can be mastered by staff quickly, the maintenance cost is low, and the working method is stable and reliable in the service life.

3. The butt joint between first connector and the second connector adopts quick connection structure, and the butt joint of two cables is comparatively convenient fast, also is convenient for split to connect back reliable and stable.

4. The positioning slot and the positioning protrusion are arranged, so that the occurrence of cable phase errors is prevented, the occurrence of misplug between the first connector and the second connector of the cable quick connection shapes with different phases is avoided, and the safety is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of a first connector and a second connector inserted into each other;

FIG. 2 is a schematic view of the first connector and the second connector separated from each other;

FIG. 3 is an enlarged view at A;

FIG. 4 is an enlarged view at B;

FIG. 5 is a schematic view of an assembled structure of the first connector;

FIG. 6 is an exploded view (one)

FIG. 7 is a schematic diagram of an assembled structure of the second connector;

Fig. 8 is an exploded view (two).

In the figure:

1. A first connector; 10. a first insulating housing; 101. a first connection channel; 102. a plug cavity; 103. positioning the bulge; 11. a first main casing; 12. a first end housing; 121. a locking hole; 13. a deflector rod; 130. a locking part; 131. a cam section; 132. a plane unlocking part; 14. a conductive connection; 141. a first connection chamber; 142. a conductive post; 143. a threaded hole; 15. a waterproof jacket; 16. an end cap; 17. a first gland; 171. a sealing jaw; 18. a second gland; 19. a first sleeve; 20. a step; 30. a second sleeve;

2. A second connector; 21. a second insulating housing; 211. a second connection channel; 22. a second main casing; 23. a second end housing; 231. a locking groove; 24. a third sleeve; 25. a fourth sleeve; 26. a conductive connecting sleeve; 261. a second connecting cavity; 262. a third connecting cavity; 27. a positioning ring; 28. a conductive spring sleeve; 281. an elastic conductive strip; 282. a hook part; 29. a conductive positioning sleeve; 291. a convex ring;

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the utility model, fall within the scope of protection of the utility model.

Examples:

As shown in fig. 1 to 8, the cable quick connection device comprises a first connector 1 and a second connector 2, wherein the first connector 1 and the second connector 2 are mutually inserted after being respectively connected with the conductive wires of the cable, and weapons are locked through a quick connection structure after being mutually inserted, so that the cable connection is stable and reliable, and the maintenance is convenient.

The first connector 1 includes a first insulating housing 10 and a first connection structure, the first insulating housing 10 including a first connection passage 101, the first connection structure being mounted in the first connection passage 101, the first connection structure including a conductive connection member 14, a first jacket body 19 and a second jacket body 30, the first insulating housing 10 including a first main housing 11 and a first end housing 12; the conductive connecting member 14 is formed with a conductive post 142 and a first connecting cavity 141 for inserting a conductive wire of a cable, the first sleeve 19 is installed in the first main housing 11, the cable is threaded through the first sleeve 19, so that the conductive wire of the cable is inserted into the first connecting cavity 141, since a threaded hole 143 is formed on the inner wall of the first connecting cavity 141 in a penetrating manner, the threaded hole 143 is internally threaded with a set screw, the set screw is used as a first fastener, at this time, the set screw is screwed, so that the inner side end of the set screw abuts against the outer wall of the conductive wire of the cable to fix the conductive wire of the cable, then the portion of the conductive connecting member 14 with the first connecting cavity 141 is inserted into the first sleeve 19, the second sleeve 30 is sleeved on the conductive post 142 (i.e. the conductive post 142 penetrates through the second sleeve 30), and finally the first end housing 12 is in threaded connection with the end of the first main housing 11, and the end face of the first end shell 12 and the step 20 of the first main body are sealed by providing a sealing ring, at this time, a part of the first sleeve 19 is located in the first main shell 11, the other part of the first sleeve 19 and the second sleeve 30 are both located in the first end shell 12, the plugging cavity 102 is formed in the first end shell 12, the step 20 on the outer wall of the other part of the first sleeve 19 is limited between one end face of the second sleeve 30 and one end face of the first main shell 11, the step 20 on the outer wall of the second sleeve 30 and the step 20 on the inner wall of the first end shell 12 are clamped mutually, the part of the conductive connecting piece 14 is located in a channel formed by mutually splicing the first sleeve 19 and the second sleeve 30, and the step 20 on the conductive connecting piece 14 is limited between one end face of the first sleeve 19 and the step 20 on the inner wall of the second sleeve 30, in order to prevent the conductive post 142 from being exposed, the conductive post 142 can be prevented from being damaged by collision, so that the service life of the cable quick connection device is further prolonged, the conductive post 142 is located at the position of the plugging cavity 102 of the first connection channel 101, the plugging cavity 102 is formed by surrounding the conductive post 142 by the first end shell 12, the conductive connecting piece 14 and the conductive post 142 are both in a cylindrical structure, and the plugging cavity 102 is also a cylindrical cavity.

The second connector 2 comprises a second insulating housing 21 and a second connecting structure, the second insulating housing 21 comprises a second connecting channel 211, the second connecting structure is arranged in the second connecting channel 211, the second connecting structure comprises a conductive connecting sleeve 26, a third sleeve 24 and a fourth sleeve 25, the second insulating housing 21 comprises a second main housing 22 and a second end housing 23, a second connecting cavity 261 for inserting a conductive post 142 and a third connecting cavity 262 for inserting a conductive wire of a cable are formed on the conductive connecting sleeve 26, the third sleeve 24 is arranged in the second main housing 22, the cable is inserted into the third connecting cavity 262 through the third sleeve 24, a set screw is connected in the threaded hole 143 by internal threads on the inner wall of the third connecting cavity 262, the set screw is used as a second fastener, the inner side end of the set screw is abutted against the outer wall of the conductive wire of the cable, then the conductive wire is fixed on the conductive connecting sleeve 14, the third sleeve 24 is inserted into the step portion of the second sleeve 24, which is positioned between the second sleeve 24 and the second sleeve 20, the second sleeve 24 is positioned on the other end portion of the second sleeve 20, and the second sleeve 20 is positioned between the second sleeve 24 and the third sleeve 20, and the second sleeve 20, the second sleeve is sealed by the other end portion of the second sleeve 23, and the second sleeve 23 is positioned on the inner wall of the second sleeve 20 and the second sleeve 20, the conductive connecting sleeve 26 is positioned in a channel formed by mutually splicing the third sleeve body 24 and the fourth sleeve body 25, and the step 20 of the outer wall of the conductive connecting sleeve 26 is limited between the step 20 of the inner wall of the first sleeve body 19 and one end surface of the second sleeve body 30; the conductive connecting piece 14 and the conductive connecting sleeve 26 are made of metal materials with integrated structures, and can be made of copper materials or aluminum materials, and the conductive connecting sleeve 26, the third connecting cavity 262 and the plug-in portion of the second insulating housing 21 are cylindrical structures.

The sealing rings are embedded in the inner bottom surface of the plugging cavity 102 and the end surface of the second insulating housing 21, when the cables are in butt joint, the conductive column 142 is inserted into the third connecting cavity 262 and is in conductive connection with each other, at this time, the plugging part of the second insulating housing 21 is inserted into the plugging cavity 102 of the first connecting channel 101 and is in locking connection with each other through a quick connecting structure, meanwhile, the two sealing rings are also mutually attached and sealed, and when the cables are installed, the set screw is used for installing the cable conductive wires, the cable wiring is convenient and flexible, and when the cables are replaced, the conductive connecting piece 14 and the conductive connecting sleeve 26 can be recycled, so that the service life is prolonged.

Specifically, the quick connection structure includes a plurality of shift levers 13 and a locking groove 231 provided on the outer peripheral sidewall of the plugging portion of the second insulating housing 21; the locking groove 231 is internally provided with a ring groove which is annularly arranged along the periphery of the second insulating shell 21, and the inner wall of the ring groove is arranged in a cambered surface manner; the shift lever 13 is generally provided in two and symmetrical arrangement. A plurality of locking holes 121 corresponding to the positions of the locking grooves 231 are formed in the inner peripheral side wall of the plugging cavity 102 of the first connecting channel 101, the two locking holes 121 are correspondingly arranged and symmetrically arranged, the locking end of the shifting lever 13 is hinged to the locking hole 121 through a pin shaft, a cam part 131 corresponding to and matched with the positions of the locking grooves 231 is arranged on the locking end of the shifting lever 13, and a plane unlocking part 132 is arranged on one side, opposite to the cam part 131, of the locking end of the shifting lever 13; when the plugging portion of the second insulating housing 21 and the plugging cavity 102 of the first connecting channel 101 are in a locked state, the two levers 13 are rotated to be in a horizontal state, and the cam portion 131 is inserted into the locking groove 231; when the plug-in portion of the second insulating housing 21 and the plug-in cavity 102 of the first connecting channel 101 are in an unlocked state, the two shift levers 13 are rotated to be in an inclined state, the cam portion 131 is far away from the locking groove 231, the two shift levers 13 are made of insulating materials, the two connectors which are structurally arranged are relatively convenient to lock after being plugged into each other, or are convenient to detach when being separated, the quick connection structure is replaced by a structure of matching a nut with external threads, the nut is sleeved on the end portion of the first insulating housing 10, the nut is limited by the convex ring 291, external threads are arranged at the end portion of the second insulating housing 21, and at the moment, the quick connection of the two connectors can be achieved by carrying out threaded connection on the nut and the exposed threads after being plugged.

In this embodiment, the second connection structure further includes a conductive spring sleeve 28, and a middle portion of an inner wall of the conductive spring sleeve 28 or a position close to an opening of the third connection cavity 262 is in an inward bulge state; the conductive spring sleeve 28 includes a plurality of elastic conductive strips 281 arranged in an annular array, each elastic conductive strip 281 is arc-shaped and uniformly distributed on the inner wall of the third connecting cavity 262, a hook portion 282 of each elastic conductive strip 281 is hooked and sleeved on the opening edge portion of the third connecting cavity 262, an outer wall of the conductive connecting sleeve 26 located in the third connecting cavity 262 is sleeved with a conductive positioning sleeve 29, a convex ring 291 is formed on the inner wall of the conductive positioning sleeve 29, so that the hook portion 282 of each elastic conductive strip 281 is limited between the convex ring 291 and the opening edge portion of the third connecting cavity 262, a positioning ring 27 is arranged at the bottom of the third connecting cavity 262, and the other end of each elastic conductive strip 281 is clamped between the outer wall of the positioning ring 27 and the inner wall of the third connecting cavity 262, and the raised portion of the structure enables the conductive spring sleeve 28 to be in close contact with the outer wall of the conductive post 142 after the conductive post 142 is inserted, so that conductive connection is stable and reliable.

In this embodiment, a positioning slot is provided on the outer wall of the plugging portion of the second insulating housing 21, a positioning protrusion 103 is provided on the inner wall of the plugging cavity 102 of the first connecting channel 101, or a positioning protrusion 103 is provided on the outer wall of the plugging portion of the second insulating housing 21, and a positioning slot is provided on the inner wall of the plugging cavity 102 of the first connecting channel 101; the positioning protrusion 103 is inserted into the positioning slot, wherein the positions of the positioning slot and the positioning protrusion 103 can be set at different angles according to different phases of the three-phase power, so that the situation of misplug between the first connector 1 and the second connector 2 of the cable quick connecting device with different phases is avoided.

In this embodiment, the tail end of the first main shell 11 and the tail end of the second main shell 22 are respectively and hermetically connected with a waterproof sleeve 15, the connection is in threaded connection, a sealing ring is arranged between a step 20 of the waterproof sleeve 15 and the end surface of the main shell for sealing, a first sealing sleeve 17 is arranged in the waterproof sleeve 15, a second sealing sleeve 18 is positioned and installed on the inner wall of the sealing part of the first sealing sleeve 17, a plurality of inclined grooves which are arranged in an annular array are formed in the sealing part of the first sealing sleeve 17 to form a plurality of sealing claws 171, an end cap 16 is connected on the waterproof sleeve 15 in a threaded manner, a cable passes through the end cap 16, the waterproof sleeve 15, the first sealing sleeve 17 and the second sealing sleeve 18, the end cap 16 covers the sealing part, and presses the sealing part to enable the sealing claws 171 to incline towards the cable direction and to be mutually closed to enable the second sealing sleeve 18 to be tightly attached to the outer wall of the cable, the inner cavity of the end cap 16 is a conical cavity, the two sealing sleeves are made of rubber and play a role in sealing the cable, and dust and moisture are prevented from entering the cable connector, and the cable connector is prevented from being damaged by the cable connector, and the normal fire-burning device is prevented from being affected by the fault.

The present utility model is not limited to the above-mentioned preferred embodiments, and any person who can obtain other various products under the teaching of the present utility model can make any changes in shape or structure, and all the technical solutions that are the same or similar to the present utility model fall within the scope of the present utility model.

Claims

1. The utility model provides a cable quick connecting device which characterized in that:

A first connector (1) comprising a first insulating housing (10) and a first connection structure, wherein the first insulating housing (10) comprises a first connection channel (101), the first connection structure is installed in the first connection channel (101), the first connection structure comprises a conductive connecting piece (14), a conductive column (142) and a first connection cavity (141) for inserting a cable conductive wire are formed on the conductive connecting piece (14), a first fastener is installed on the first connection cavity (141), so that the cable conductive wire inserted in the first connection cavity (141) is fixed, and the conductive column (142) is located at the position of an inserting cavity (102) of the first connection channel (101);

a second connector (2) including a second insulating housing (21) and a second connection structure, wherein the second insulating housing (21) includes a second connection channel (211), the second connection structure is installed in the second connection channel (211), the second connection structure includes a conductive connecting sleeve (26), a second connection cavity (261) into which a conductive post (142) is inserted and a third connection cavity (262) into which a conductive wire of a cable is inserted are formed on the conductive connecting sleeve (26), and a second fastener is installed on the second connection cavity (261) to fix the conductive wire of the cable inserted into the second connection cavity (261);

When the conductive post (142) is inserted into the third connecting cavity (262) and the conductive post and the third connecting cavity are connected with each other in a conductive way, the plug-in part of the second insulating shell (21) is inserted into the plug-in cavity (102) of the first connecting channel (101) and the plug-in part and the second insulating shell are connected with each other in a locking way through a quick connecting structure.

2. The quick cable connection device according to claim 1, wherein the quick connection structure comprises a plurality of shift levers (13) and locking grooves (231) arranged on the outer peripheral side wall of the plugging part of the second insulating housing (21), a plurality of locking holes (121) corresponding to the positions of the locking grooves (231) are formed on the inner peripheral side wall of the plugging cavity (102) of the first connection channel (101), the locking ends of the shift levers (13) are hinged at the locking holes (121) through pin shafts, cam parts (131) corresponding to and matched with the positions of the locking grooves (231) are arranged on the locking ends of the shift levers (13), and a plane unlocking part (132) is arranged on one side, opposite to the cam parts (131), of the locking ends of the shift levers (13); when the plug-in part of the second insulating shell (21) and the plug-in cavity (102) of the first connecting channel (101) are in a locking state, the cam part (131) is inserted into the locking groove (231); when the plug-in part of the second insulating housing (21) and the plug-in cavity (102) of the first connecting channel (101) are in an unlocking state, the cam part (131) is far away from the locking groove (231).

3. The quick cable connection device according to claim 2, wherein the locking groove (231) is an annular groove annularly arranged along the periphery of the second insulating housing (21), and the inner wall of the annular groove is provided in an arc surface.

4. The quick cable connection device according to claim 1, wherein a positioning slot is provided on the outer wall of the plug-in portion of the second insulating housing (21), a positioning protrusion (103) is provided on the inner wall of the plug-in cavity (102) of the first connection channel (101), or a positioning protrusion (103) is provided on the outer wall of the plug-in portion of the second insulating housing (21), and a positioning slot is provided on the inner wall of the plug-in cavity (102) of the first connection channel (101); the positioning protrusion (103) is inserted into the positioning slot.

5. The quick cable connection according to claim 1, wherein the second connection structure further comprises a conductive spring housing (28), and wherein a middle portion of an inner wall of the conductive spring housing (28) or a position close to an opening of the third connection chamber (262) is in an inwardly bulging state.

6. The quick cable connection device according to claim 5, wherein the conductive spring housing (28) comprises a plurality of elastic conductive strips (281) arranged in an annular array, each elastic conductive strip (281) is arc-shaped and uniformly distributed on the inner wall of the third connection cavity (262), a hook portion (282) of each elastic conductive strip (281) is hooked on the opening edge portion of the third connection cavity (262), a conductive positioning sleeve (29) is sleeved on the outer wall of the third connection cavity (262) on the conductive connecting sleeve (26), and a convex ring (291) is formed on the inner wall of the conductive positioning sleeve (29) so that the hook portion (282) of each elastic conductive strip (281) is limited between the convex ring (291) and the opening edge portion of the third connection cavity (262), a positioning ring (27) is arranged at the bottom of the third connection cavity (262), and the other end of each elastic conductive strip (281) is clamped between the outer wall of the positioning ring (27) and the inner wall of the third connection cavity (262).

7. The quick-connect device according to claim 1, characterized in that the first insulating housing (10) comprises a first main housing (11) and a first end housing (12), the first connection structure further comprises a first jacket body (19) and a second jacket body (30), the first main housing (11) being in sealing connection with the first end housing (12), a part of the first jacket body (19) being located in the first main housing (11), the other part thereof and the second jacket body (30) being located in the first end housing (12), the plug cavity (102) being formed in the first end housing (12), a step (20) on the outer wall of the other part of the first jacket body (19) being confined between an end face of the second jacket body (30) and an end face of the first main housing (11), the step (20) on the outer wall of the second jacket body (30) being in snap-fit with the step (20) on the inner wall of the first end housing (12), the conductive element (14) being located in the first jacket body (19) and the conductive element (20) being confined between the first jacket body (19) and the end face (30), the conductive post (142) extends through the second sleeve (30) and is positioned in the plug cavity (102).

8. The quick-connect device of claim 7, wherein the second insulating housing (21) comprises a second main shell (22) and a second end shell (23), the second connecting structure further comprises a third sleeve (24) and a fourth sleeve (25), the second main shell (22) is in sealing connection with the second end shell (23), a part of the third sleeve (24) is positioned in the second main shell (22), the other part of the third sleeve and the fourth sleeve (25) are both positioned in the second end shell (23), a step (20) on the outer wall of the other part of the third sleeve (24) and a step (20) on the outer wall of the second sleeve (30) are mutually attached and are limited between one end face of the second main shell (22) and a step (20) on the inner wall of the second end shell (23), the conductive connecting sleeve (26) is positioned in the step face of the third sleeve (24) and the fourth sleeve (25) mutually spliced to form a channel, and the conductive connecting sleeve (26) is limited between the first end face (20) and the second end face (19) of the connecting sleeve.

9. The quick cable connection device according to claim 8, wherein the tail end of the first main shell (11) and the tail end of the second main shell (22) are respectively and hermetically connected with a waterproof sleeve (15), a first sealing sleeve (17) is arranged in the waterproof sleeve (15), a second sealing sleeve (18) is positioned and installed on the inner wall of the sealing part of the first sealing sleeve (17), a plurality of inclined grooves which are arranged in an annular array are formed on the sealing part of the first sealing sleeve (17) so as to form a plurality of sealing claws (171), an end cap (16) is connected to the waterproof sleeve (15) in a threaded manner, a cable passes through the end cap (16), the waterproof sleeve (15), the first sealing sleeve (17) and the second sealing sleeve (18), the end cap (16) covers the sealing part, and the sealing claws (171) are inclined towards the cable direction and are mutually close to each other so as to promote the second sealing sleeve (18) to be clung to the outer wall of the cable, and the inner cavity of the end cap (16) is a conical cavity.

10. The quick cable connection device according to any one of claims 1 to 9, wherein the first fastener and the second fastener are set screws, threaded holes (143) are formed through inner walls of the first connection cavity (141) and the second connection cavity (261), the set screws are screwed into the threaded holes (143), and inner ends of the set screws abut against outer walls of the cable conductive wires to fix the cable conductive wires.