A live-connected wire connection device

Abstract

This invention provides a live-line wire connection device. It includes a clamp body, a clamping head, a lifting mechanism, and an insulating rod. The clamp body has a first clamping space extending vertically and openable, a first groove extending horizontally, and a vertically extending, through-hole insertion slot located between the first clamping space and the first groove. The clamping head includes a clamping head body and a plug-in portion connected to the clamping head body. The clamping head body has a second groove, and the plug-in portion is inserted into the plug-in slot, such that the first groove and the second groove are opposite to form a second clamping space. The horizontal cross-sectional shape of both the plug-in portion and the plug-in slot is non-circular. At least a portion of the lifting mechanism passes through the bottom of the plug-in slot and connects to the plug-in portion to drive the clamping head to rise and fall. The insulating rod is connected to the end of the lifting mechanism away from the clamping head. This wire connection device can conveniently achieve live-line connection of user-end wires and power distribution lines.

Description

Technical Field

[0001] This invention relates to the field of electrical wiring, and more specifically, to a live-lined wire connection device. Background Technology

[0002] In related technologies, when a newly built line or a new user transformer in a power system needs to be connected to the power network and put into operation, it is generally necessary to shut down the power and use a parallel trench clamp T-connection for connection. However, shutting down for connection requires prior application in accordance with power industry requirements, which takes a long time and requires a well-planned power outage. This greatly reduces the convenience of electricity use for new users, and at the same time, power outages will inevitably reduce the reliability of power supply to the line. Summary of the Invention

[0003] The purpose of this invention is to provide a live-connected wire connection device to solve the above-mentioned technical problems.

[0004] An embodiment of the present invention is implemented as follows: a live-lined wire connection device includes a clamp body, a clamp head, a lifting mechanism, and an insulating rod. The clamp body is provided with a first clamping space extending vertically and openable, a first groove extending horizontally, and a plug slot extending vertically and configured to be vertically continuous. The plug slot is located between the first clamping space and the first groove. The clamp head includes a clamp head body and a plug portion connected to the clamp head body. The clamp head body is provided with a second groove. The plug portion is inserted into the plug slot, such that the first groove and the second groove are opposite to each other to form a second clamping space. The horizontal cross-sectional shape of the plug portion and the plug slot is configured to be non-circular. At least a portion of the lifting mechanism passes through the bottom of the plug slot and is connected to the plug portion to drive the clamp head to rise and fall. The insulating rod is connected to the end of the lifting mechanism away from the clamp head.

[0005] Optionally, the bottom end of the insertion part is provided with an upwardly extending first threaded hole, the lifting mechanism includes a first connecting rod, the upper end of the first connecting rod is configured as a first threaded part that is threadedly connected to the first threaded hole, the first connecting rod is rotatably disposed in the insertion groove in its radial direction and its position is locked in its axial direction.

[0006] Optionally, the insertion groove is provided with an annular recess, and the outer periphery of the first connecting rod is provided with a protrusion that fits with the annular recess with a clearance.

[0007] Optionally, the lifting mechanism further includes a second connecting rod and a drive assembly. The drive assembly includes a base plate, a sun gear, a fixed shaft, three planetary gears, and a sleeve. The sleeve and the base plate are connected to form a receiving space. An internal gear ring is formed on the inner peripheral wall of the sleeve. The fixed shaft passes through the base plate and extends into the receiving space. The insulating rod is connected to the fixed shaft and is located on the side of the base plate away from the sleeve. The sun gear is sleeved on the fixed shaft and located in the receiving space. The three planetary gears are rotatably arranged around the sun gear, and the three planetary gears respectively mesh with the sun gear and the internal gear ring. One end of the second connecting rod is connected to one end of the first connecting rod, and the other end of the second connecting rod is connected to the side of the sleeve away from the base plate.

[0008] Optionally, the lifting mechanism further includes a fixed housing, which is constructed as a hollow cylindrical structure with an open lower end. The end of the fixed shaft away from the sun gear is connected to the upper end face of the fixed housing. The fixed housing is provided with two generally T-shaped and opposite limiting grooves. The limiting grooves include a first groove extending in the horizontal direction and a second groove extending in the vertical direction. The second groove extends upward from the lower end face of the fixed housing. The upper end of the insulating rod includes two oppositely arranged limiting posts.

[0009] The lifting mechanism has an unlocked position and a locked position. In the unlocked position, the two limiting posts correspond to the second groove respectively. The limiting posts enter the first groove and rotate to make the lifting mechanism be in the locked position.

[0010] Optionally, the end of the first connecting rod near the second connecting rod is configured as a first insertion hole, the upper end of the second connecting rod is configured as a first connecting part that mates with the first insertion hole, the upper end face of the sleeve is provided with a second insertion hole, the lower end of the second connecting rod is configured as a second connecting part that mates with the second insertion hole, and the first insertion hole, the second insertion hole, the first connecting part and the second connecting part are all configured as non-circular.

[0011] Optionally, the wire clamp body includes a fastener and a first body and a second body with the same structure but opposite to each other. The fastener detachably connects the first body and the second body together. The first body and the second body are respectively provided with a fourth groove extending in the vertical direction. The fourth groove on the first body and the fourth groove on the second body form the first wire clamping space.

[0012] The first body and the second body are respectively provided with a third groove extending in the vertical direction, and the third groove of the first body and the third groove of the second body form the insertion groove.

[0013] Optionally, the lifting mechanism further includes a first housing, a ball joint rod, and a ball joint seat. The first housing covers the outer periphery of the sleeve, the ball joint seat is fixed to the upper end of the first housing, one end of the ball joint rod is provided with a ball head, the ball head is rotatably connected to the ball joint seat, and the second connecting rod is configured as a flexible shaft and passes through the ball joint seat and the ball joint rod.

[0014] Optionally, the lifting mechanism further includes a limiting assembly, which includes a second housing, a limiting plate, and a locking screw. The second housing is fixed to the outer surface of the first housing. One end of the limiting plate is inserted into the first housing, and the other end of the limiting plate extends into the second housing. The ball head is supported on the limiting plate, and the locking screw passes through the bottom side of the second housing to abut against the limiting plate, so as to raise or lower one end of the limiting plate by means of the locking screw.

[0015] Optionally, the end of the ball joint away from the ball head is provided with a hollow sleeve, the main body of the connector is provided with a second threaded portion, and the sleeve is threadedly connected to the second threaded portion.

[0016] The beneficial effects of this invention are as follows: the first clamping space can securely hold the user's wire, and then the clamping head can be hung on the power distribution line by lifting the insulating rod. Thus, by rotating the insulating rod, under the action of the lifting mechanism, the clamping head gradually extends into the main body of the connector, that is, the second groove gradually approaches the first groove, so that the second clamping space can stably clamp the power distribution line. The whole process does not require power outage, that is, the splicing operation can be completed while the power is on, ensuring the convenience of power supply for users, and avoiding the instability of power supply caused by power outage. Moreover, this process is also very convenient for workers to operate, as the live splicing can be completed by rotating the insulating rod. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of a live-bridging wire connection device provided in an embodiment of the present invention;

[0019] Figure 2 for Figure 1 A sectional view;

[0020] Figure 3 for Figure 1 Another structural diagram from which the ball joint, ball head, and sleeve are not shown.

[0021] Figure 4 This is a schematic diagram of the structure of the connector body provided in an embodiment of the present invention;

[0022] Figure 5 A schematic diagram of the structure of the first main body provided in an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the structure of the first body and the wire clamp provided in an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the first main body and part of the wire clamp provided in an embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the wire clamp head provided in an embodiment of the present invention;

[0026] Figure 9 An exploded view of the first connecting rod, the second connecting rod, and the sleeve provided in an embodiment of the present invention;

[0027] Figure 10 This is a partial structural schematic diagram of the driving component provided in an embodiment of the present invention;

[0028] Figure 11 This is a partial structural diagram of the ball joint, first housing, drive assembly, and fixed housing provided in an embodiment of the present invention, wherein the first housing and the sleeve are assembled together.

[0029] Icons: 10-Wire clamp body; 11-First body; 111-Third groove; 112-Fourth groove; 113-First groove; 114-Annular recess; 115-Connecting hole; 12-Second body; 13-Second threaded part; 14-Plug-in groove; 15-First wire clamping space; 16-Second wire clamping space; 20-Wire clamp head; 21-Wire clamp head body; 211-Second groove; 22-Plug-in part; 221-First threaded hole; 30-First connecting rod; 31-First threaded part; 32-Protrusion; 33-First plug-in hole; 40 - Ball head rod; 41- Sleeve; 42- Ball head; 50- Ball head seat; 51- Second housing; 52- Limiting plate; 53- Locking screw; 54- Fixing screw; 55- Stepped part; 60- Second connecting rod; 61- First connecting part; 62- Second connecting part; 70- First housing; 71- Stepped hole; 80- Sleeve; 80a- Second insertion hole; 81- Internal gear ring; 82- Sun gear; 83- Planetary gear; 84- Base plate; 90- Fixed shaft; 100- Fixed housing; 101- Limiting groove; 200- Insulating rod; 201- Limiting post. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0032] This invention provides a live-line connection device, referring to... Figures 1-11 The live wire connection device includes a clamp body 10, a wire clamp head 20, a lifting mechanism, and an insulating rod 200.

[0033] Reference Figure 1 , Figure 3 , Figure 4 and Figure 6 The connector body 10 is provided with a first clamping space 15 extending vertically and openable, a first groove 113 extending horizontally, and a plug groove 14 extending vertically and configured to be through. The first clamping space 15 is used to clamp the user's wires. The plug groove 14 is located between the first clamping space 15 and the first groove 113. The clamping head 20 includes a clamping head body 21 and a plug part 22 connected to the clamping head body 21. The clamping head body 21 is provided with a second groove 21. The plug part 22 is inserted into the plug groove 14, so that the first groove 113... The second groove 21 is opposite to the second groove 21 and forms a second clamping space 16, which is used to clamp the power distribution line. The horizontal cross-sectional shape of the plug part 22 and the plug groove 14 is constructed to be non-circular, that is, the plug part 22 and the plug groove 14 can be triangular prism or quadrangular prism. At least part of the lifting mechanism is inserted through the bottom of the plug groove 14 and connected to the plug part 22 to drive the clamping head 20 to rise and fall. When the clamping head 20 rises and falls, the first groove 113 and the second groove 21 move closer to each other or further away from each other. The insulating rod 200 is connected to the end of the lifting mechanism away from the clamping head 20.

[0034] In use, first open the first clamping space 15, insert one end of the user-end wire into the first clamping space 15, and then hang the clamp head 20 on the power distribution line through the insulating rod 200. When the clamp head 20 is hung on the power distribution line, it is suspended on the power distribution line through the second groove 21. It can be understood that both the clamp head 20 and the connector body 10 are conductors.

[0035] Based on this, the user's wire can be securely clamped in the first clamping space 15, and then the clamping head 20 can be hung on the power distribution line by lifting the insulating rod 200. Thus, by rotating the insulating rod 200, the clamping head 20 gradually extends into the clamp body 10 under the action of the lifting mechanism, that is, the second groove 21 gradually approaches the first groove 113, so that the second clamping space 16 can stably clamp the power distribution line. In the whole process, there is no need to disconnect the power, that is, the splicing operation can be completed while the power is on, ensuring the convenience of the user's power supply, while avoiding the instability of the power supply caused by the power outage. Moreover, this process is also very convenient for the staff to operate, and the live splicing can be completed by rotating the insulating rod 200.

[0036] Reference Figure 1 , Figure 2 , Figure 3 and Figure 8 In this embodiment, the bottom end of the plug-in part 22 is provided with an upwardly extending first threaded hole 221. The first threaded hole 221 can be open at both ends, that is, the first threaded hole 221 can pass through the clamping head 20, or it can be open at the bottom end. The lifting mechanism includes a first connecting rod 30. The upper end of the first connecting rod 30 is configured as a first threaded part 31 that is threadedly connected to the first threaded hole 221. The first connecting rod 30 is rotatably disposed in the plug-in groove 14 in its radial direction and its position is locked in its axial direction. That is to say, when the first connecting rod 30 rotates, the first connecting rod 30 will not move relative to the clamping body 10 in the vertical direction. When the clamping head 20 is hung on the power distribution line, the clamping head 20 will not rotate with the rotation of the insulating rod 200 due to the interference of the power distribution line. Since the first connecting rod 30 and the plug-in part 22 are threadedly connected, the clamping head 20 can be lifted and lowered by rotating the insulating rod 200, so that the wire connection device can be conveniently suspended on the power distribution line or disassembled from the power distribution line.

[0037] Reference Figure 5 and Figure 6In order to ensure that the position of the first connecting rod 30 remains unchanged in the vertical direction when the first connecting rod 30 rotates, an annular recess 114 is provided on the inner wall of the insertion groove 14. The annular recess 114 is cylindrical in shape, and a protrusion 32 extending radially outward is formed on the outer circumference of the first connecting rod 30. The protrusion 32 is annular, and the annular recess 114 and the protrusion 32 are in clearance fit. When the protrusion 32 is rotatably disposed in the annular recess 114, the annular recess 114 can restrict the first connecting rod 30 from moving axially.

[0038] Reference Figure 2 , Figure 9 , Figure 10 , Figure 11 Specifically, the lifting mechanism also includes a second connecting rod 60 and a drive assembly. The drive assembly includes a base plate 84, a sun gear 82, a fixed shaft 90, three planetary gears 83, and a sleeve 80. The sleeve 80 can be constructed as a hollow cylinder with an open lower end. The sleeve 80 and the base plate 84 are connected to form a receiving space. An internal gear ring 81 is formed on the inner peripheral wall of the sleeve 80. The fixed shaft 90 passes through the base plate 84 and extends into the receiving space. An insulating rod 200 is connected to the fixed shaft 90 and is located on the side of the base plate 84 away from the sleeve 80. The sun gear 82 is sleeved on the fixed shaft 90 and located in the receiving space. The three planetary gears 83 are rotatably arranged around the sun gear 82. The three planetary gears 83 are evenly distributed around the sun gear 82, and respectively mesh with the sun gear 82 and the internal gear ring 81. One end of the second connecting rod 60 is connected to one end of the first connecting rod 30, and the other end of the second connecting rod 60 is connected to the side of the sleeve 80 away from the base plate 84. Thus, when the insulating rod 200 is rotated, the fixed shaft 90 rotates accordingly, which in turn drives the planetary gears 83 and the internal gear ring 81 to rotate through the sun gear 82, and then drives the second connecting rod 60 to rotate through the sleeve 80. In this embodiment, the sun gear 82 and the planetary gears 83 are used to drive the second connecting rod 60 and the first connecting rod 30 to rotate, which can obtain a larger transmission ratio, thereby shortening the clamping time of the power distribution line and facilitating the rapid connection of the conductor.

[0039] Furthermore, referring to Figure 1 , Figure 2 and Figure 11The lifting mechanism also includes a fixed housing 100, which is constructed as a hollow cylindrical structure with an open lower end. The end of the fixed shaft 90 away from the sun gear 82 is connected to the upper end face of the fixed housing 100, and the fixed shaft 90 and the fixed housing 100 are fixedly connected, for example, by welding. The fixed housing 100 is provided with two generally T-shaped and opposite limiting grooves 101. The limiting grooves 101 include a first groove extending in the horizontal direction and a second groove extending in the vertical direction. The second groove extends upward from the lower end face of the fixed housing 100. The upper end of the insulating rod 200 includes two oppositely arranged limiting posts 201, and the axes of the two limiting posts 201 are located on the same straight line. Furthermore, the lifting mechanism intersects with and is perpendicular to the axis of the insulating rod 200. It has an unlocked position and a locked position. In the unlocked position, the two limit posts 201 correspond to the second slots respectively. Here, "corresponding" means that the two limit posts 201 can enter their respective second slots simultaneously. The limit posts 201 enter the first slot and rotate to put the lifting mechanism in the locked position. It can be seen that the insulating rod 200 and the fixed housing 100 are detachably connected. On the one hand, this makes it convenient to store the wire connection device and reduce the space occupied by the wire connection device when not in use. On the other hand, after the wire connection device is connected to the user end wire and the power distribution line respectively, the insulating rod 200 can be removed to avoid operation by non-working personnel.

[0040] Reference Figure 2 , Figure 7 , Figure 9 The first connecting rod 30 has a first insertion hole 33 at one end near the second connecting rod 60. The upper end of the second connecting rod 60 has a first connecting portion 61 that mates with the first insertion hole 33. The upper end face of the sleeve 80 has a second insertion hole 80a. The lower end of the second connecting rod 60 has a second connecting portion 62 that mates with the second insertion hole 80a. The first insertion hole 33, the second insertion hole 80a, the first connecting portion 61, and the second connecting portion 62 are all non-circular. This non-circularity can be... The first insertion hole 33 and the second insertion hole 80a are triangular, quadrilateral, or similar shapes. Correspondingly, the first connecting part 61 and the second connecting part 62 can be triangular prism or quadrangular prism. The second connecting rod 60 is detachably connected to the first connecting rod 30 and the sleeve 80, which facilitates the assembly and disassembly of the wire connection device. At the same time, the first insertion hole 33, the second insertion hole 80a, the first connecting part 61, and the second connecting part 62 are set to be non-circular, so that the first connecting rod 30 can be rotated by the second connecting rod 60.

[0041] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5The connector body 10 includes fasteners and a first body 11 and a second body 12 with the same structure but opposite to each other. The fasteners can be bolts and nuts, which detachably connect the first body 11 and the second body 12. Correspondingly, the first body 11 and the second body 12 are provided with corresponding connecting holes 115 for bolts to pass through. The first body 11 and the second body 12 are respectively provided with a fourth groove 112 extending in the vertical direction. The fourth groove 112 on the first body 11 and the fourth groove 112 on the second body 12 form a first clamping space 15. The first body 11 and the second body 12 are respectively provided with a third groove 111 extending in the vertical direction. The third groove 111 on the first body 11 and the third groove 111 on the second body 12 form a plug-in groove 14. By setting the connector body 10 to be movably connected to the first body 11 and the second body 12, the first clamping space 15 can be increased, which facilitates the installation and removal of user-end wires.

[0042] Reference Figure 1 , Figure 2 , Figure 3 , Figure 11 The lifting mechanism also includes a first housing 70, a ball joint rod 40, and a ball joint seat 50. The first housing 70 covers the outer periphery of the sleeve 80. The first housing 70 can be fixed to the base plate 84. The ball joint seat 50 is fixed to the upper end of the first housing 70. The first housing 70 is provided with a stepped hole 71. The lower end of the ball joint seat 50 is provided with a stepped portion 55 that mates with the stepped hole 71, so that the stepped portion 55 can be inserted into the stepped hole 71. In addition, the lifting mechanism also includes a fixing screw 54. The fixing screw 54 passes through the ball joint seat 50 radially from the outside of the first housing 70, thereby fixing the first housing 70 and the ball joint seat 50. One end of the ball joint rod 40 is provided with a ball head 42. 42 is rotatably connected to the ball head seat 50, and most of the ball head 42 is located inside the ball head seat 50. The second connecting rod 60 is constructed as a flexible shaft and passes through the ball head seat 50 and the ball head rod 40. Thus, the ball head rod 40 can rotate relative to the ball head seat 50, meaning that after the ball head rod 40 rotates, the axis of the ball head rod 40 is set at an angle to the axis of the first connecting rod 30. Since the second connecting rod 60 is constructed as a flexible shaft, when the ball head rod 40 rotates relative to the ball head seat 50, the second connecting rod 60 also bends under the action of the ball head rod 40. This result allows the entire wire connection device to change from a vertical position to a bent position, thereby adjusting the working angle to facilitate operation by workers under different working conditions.

[0043] Reference Figure 2 and Figure 3In this embodiment, the lifting mechanism further includes a limiting component, which includes a second housing 51, a limiting plate 52, and a locking screw 53. The second housing 51 is fixed to the outer surface of the first housing 70, and the second housing 51 and the first housing 70 are interconnected. Here, interconnection means that the side of the second housing 51 facing the first housing 70 can be open, and the corresponding part of the second housing 51 and the first housing 70 is also open. One end of the limiting plate 52 is inserted into the first housing 70. During installation, a rectangular hole can be opened in the first housing 70, and the area of ​​the rectangular hole is larger than the area of ​​the end face of the limiting plate 52, so that the limiting plate 52 can be provided with a certain amount of movement. The other end of the limiting plate 52 extends into the second housing 51. Therefore, the end of the limiting plate 52 located inside the second housing 51 can be raised or lowered, and the ball head 42 is supported on the limiting plate 52. The locking screw 53 is inserted from the bottom side of the second housing 51 to abut against the limiting plate 52, so that the end of the limiting plate 52 can be raised or lowered by the locking screw 53. It can be understood that when the locking screw 53 is screwed into the second housing 51, the limiting plate 52 can be raised, thereby locking the ball head 42 and the ball head seat 50, thus restricting the rotation of the ball head rod 40. When the locking screw 53 is screwed out from the second housing 51, the end of the limiting plate 52 located inside the second housing 51 descends, and the ball head rod 40 and the ball head 42 descend accordingly. The limiting plate 52 contacts the limiting of the ball head 42, so that the ball head rod 40 can rotate. Furthermore, at least a portion of the first housing 70 gradually tapers in the direction from bottom to top to form a tapered portion to cooperate with the ball head 42, and the tapered portion can prevent the ball head 42 from dislodging from the first housing 70.

[0044] Reference Figure 1 , Figure 2 , Figure 3 In this embodiment, a hollow sleeve 41 is provided at the end of the ball head 40 away from the ball head 42, and the main body 10 of the connector is provided with a second threaded part 13. The sleeve 80 is threadedly connected to the second threaded part 13. Since the sleeve 80 is connected to the main body 10 of the connector and the ball head 40 respectively, the various components of the wire connection device can be connected together in the vertical direction, avoiding the separation of the various components.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A live-line connection device, characterized in that, The device includes a clamp body (10), a clamping head (20), a lifting mechanism, and an insulating rod (200). The clamp body (10) has a first clamping space (15) extending vertically and openable, a first groove (113) extending horizontally, and a vertically extending insertion groove (14) that is vertically connected. The insertion groove (14) is located between the first clamping space (15) and the first groove (113). The clamping head (20) includes a clamping head body (21) and a insertion part (22) connected to the clamping head body (21). (21) A second groove (211) is provided, the plug part (22) is plugged into the plug groove (14) and the first groove (113) and the second groove (211) are opposite to form a second wire clamping space (16). The horizontal cross-sectional shape of the plug part (22) and the plug groove (14) are both constructed to be non-circular. At least part of the lifting mechanism is inserted through the bottom of the plug groove (14) and connected to the plug part (22) to drive the wire clamping head (20) to rise and fall. The insulating rod (200) is connected to the end of the lifting mechanism away from the wire clamping head (20). The bottom end of the plug-in part (22) is provided with an upwardly extending first threaded hole (221). The lifting mechanism includes a first connecting rod (30). The upper end of the first connecting rod (30) is configured as a first threaded part (31) that is threadedly connected to the first threaded hole (221). The first connecting rod (30) is rotatably disposed in the plug-in groove (14) along its radial direction and its position is locked in its axial direction. The lifting mechanism further includes a second connecting rod (60), a first housing (70), a ball head rod (40), and a ball head seat (50). One end of the second connecting rod (60) is connected to one end of the first connecting rod (30). The first housing (70) covers the outer periphery of the second connecting rod (60). The ball head seat (50) is fixed to the upper end of the first housing (70). One end of the ball head rod (40) is provided with a ball head (42). The ball head (42) is rotatably connected to the ball head seat (50). The second connecting rod (60) is constructed as a flexible shaft and passes through the ball head seat (50) and the ball head rod (40). The lifting mechanism further includes a limiting component, which includes a second housing (51), a limiting plate (52), and a locking screw (53). The second housing (51) is fixed to the outer surface of the first housing (70). One end of the limiting plate (52) is inserted into the first housing (70), and a rectangular hole is formed in the first housing (70). The area of ​​the rectangular hole is larger than the area of ​​the end face of the limiting plate (52). The other end of the limiting plate (52) extends into the second housing (51). Inside the second housing (51), the ball head (42) is supported on the limiting plate (52), and the locking screw (53) is inserted through the bottom side of the second housing (51) to abut against the limiting plate (52) so as to raise and lower one end of the limiting plate (52) by means of the locking screw (53). A portion of the first housing (70) gradually tapers in the direction from bottom to top to form a tapered portion to cooperate with the ball head (42), and the tapered portion restricts the ball head (42) from dislodging from the first housing (70).

2. The live-lined lap wire connection device according to claim 1, characterized in that, The insertion groove (14) is provided with an annular recess (114), and the outer periphery of the first connecting rod (30) is provided with a protrusion (32) that is in clearance fit with the annular recess (114).

3. The live-lined lap wire connection device according to claim 2, characterized in that, The lifting mechanism further includes a drive assembly, which includes a base plate (84), a sun gear (82), a fixed shaft (90), three planetary gears (83), and a sleeve (80). The sleeve (80) and the base plate (84) are connected to form a receiving space. An internal gear ring (81) is formed on the inner peripheral wall of the sleeve (80). The fixed shaft (90) passes through the base plate (84) and extends into the receiving space. The insulating rod (200) is connected to the fixed shaft (90) and the insulating rod... (200) is located on the side of the base plate (84) away from the sleeve (80), the sun gear (82) is sleeved on the fixed shaft (90) and located in the receiving space, the three planet gears (83) are rotatably arranged around the sun gear (82), and the three planet gears (83) respectively mesh with the sun gear (82) and the internal gear ring (81), and the other end of the second connecting rod (60) is connected to the side of the sleeve (80) away from the base plate (84).

4. The live-lined lap wire connection device according to claim 3, characterized in that, The lifting mechanism also includes a fixed housing (100), which is constructed as a hollow cylindrical structure with its lower end open. The end of the fixed shaft (90) away from the sun gear (82) is connected to the upper end face of the fixed housing (100). The fixed housing (100) is provided with two T-shaped and opposite limiting grooves (101). The limiting grooves (101) include a first groove extending in the horizontal direction and a second groove extending in the vertical direction. The second groove extends upward from the lower end face of the fixed housing (100). The upper end of the insulating rod (200) includes two oppositely arranged limiting posts (201). The lifting mechanism has an unlocked position and a locked position. In the unlocked position, the two limiting posts (201) correspond to the second groove respectively. The limiting posts (201) enter the first groove and rotate to put the lifting mechanism in the locked position.

5. The live-lined lap wire connection device according to claim 3, characterized in that, The first connecting rod (30) has a first insertion hole (33) at one end near the second connecting rod (60), the upper end of the second connecting rod (60) has a first connecting part (61) that mates with the first insertion hole (33), the upper end face of the sleeve (80) has a second insertion hole (80a), and the lower end of the second connecting rod (60) has a second connecting part (62) that mates with the second insertion hole (80a). The first insertion hole (33), the second insertion hole (80a), the first connecting part (61) and the second connecting part (62) are all non-circular.

6. The live-lined lap wire connection device according to claim 1, characterized in that, The wire clamp body (10) includes a fastener and a first body (11) and a second body (12) with the same structure but opposite to each other. The fastener detachably connects the first body (11) and the second body (12) together. The first body (11) and the second body (12) are respectively provided with a fourth groove (112) extending in the vertical direction. The fourth groove (112) on the first body (11) and the fourth groove (112) on the second body (12) form the first wire clamping space (15). The first body (11) and the second body (12) are respectively provided with a third groove (111) extending in the vertical direction, and the third groove (111) of the first body (11) and the third groove (111) of the second body (12) form the insertion groove (14).

7. The live-lined lap wire connection device according to claim 3, characterized in that, The ball head rod (40) has a hollow sleeve (41) at one end away from the ball head (42), and the connector body (10) has a second threaded part (13), and the sleeve (80) is threadedly connected to the second threaded part (13).

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