CN106972293B - Plug-in connectors for overhead lines - Google Patents

Abstract

The invention provides an overhead line plug-in type connecting device which comprises an insulating shell, a wire clamp, a connecting wire plug and a clamping assembly, wherein the insulating shell is provided with a connecting wire plug; the insulating shell is internally provided with a cavity, the lower end surface of the insulating shell is provided with an insertion hole for the connecting wire plug to extend into the cavity, the wire clamp is fixedly connected to the outer side wall of the insulating shell, the wire clamp is fixedly communicated with the power line, the contact part of the wire clamp extends into the cavity of the insulating shell, the clamping assembly is fixed in the cavity of the insulating shell and comprises at least one clamping part matched with the connecting wire plug, and the clamping part is communicated with the contact part of the wire clamp. The beneficial effects of the invention are as follows: the device reduces the rush-repair time of the power distribution network, can select surrounding lines nearby and replace plug-and-pull connecting devices (lead plug and grounding plug), quickly completes site safety measures, and is safe and efficient.

Description

Plug-in connectors for overhead lines

technical field

The invention relates to a plug-in connection device for overhead lines.

Background technique

When new high-voltage electrical equipment is connected to the overhead lines of the distribution network, live workers need to perform lapping operations on the drain wires at close range, which poses a high safety risk and can easily cause injury to the operators.

During the maintenance and repair of the overhead lines of the distribution network, in order to prevent personal electric shock accidents caused by electrostatic induction or sudden reverse power transmission near the electrified body, all high-voltage equipment that may reverse power transmission in the overhead line section to be repaired must be grounded. It is time-consuming and labor-intensive, and the traditional grounding operation should be carried out in the power-off line. If the live line is directly grounded by mistake, it will lead to single-phase grounding of the line in the slightest, and will cause casualties to the operator in the severe case.

Contents of the invention

The technical problem to be solved by the present invention is to provide a plug-type connection device for overhead lines with reasonable structure and high safety.

In order to solve the above technical problems, the present invention provides a pluggable connection device for overhead lines;

Including at least an insulating shell, a wire clip, a connecting wire plug and a clamping assembly;

There is a cavity in the insulating shell, and an insertion hole is opened on the lower end of the insulating shell for the plug-in head of the connecting wire to extend into the cavity. The contact part extends into the cavity of the insulating housing, and the clamping assembly is fixed in the cavity of the insulating housing. The clamping assembly includes at least one clamping part that cooperates with the plug-in head of the connecting wire, and the clamping part and The contact portions of the clamps communicate.

After adopting such a structure, the overhead line plug-in connection device is fixed on the overhead line conductor through the clamp, and the clamping component can be connected to the plug-in plug or the plug-in plug of the cable, and the insulating operating rod can ensure There is a sufficient safe distance between the operator and the live equipment to ensure the safety of the operator.

The plug-type connection device for overhead lines can be temporarily mounted on the overhead line with an insulating operating rod or directly operated on the insulating arm car. It can also be installed in place in advance during the technical renovation and overhaul of the overhead line. Connect the device directly when you need to plug in the power.

This overhead line plug-in connection device has two purposes: 1. To connect to the power supply, connect the connecting line to the power supply, and directly insert the plug-in head of the connection line into the overhead line plug-in connection device through the operating lever to realize power access Function; 2. Grounding, the connection line is grounded, and the power supply grounding function can be realized by directly inserting the plug-in head of the connection line into the overhead line plug-in connection device through the operating lever.

The beneficial effects of the present invention are: reducing the repair time of the distribution network, choosing the device installed on the surrounding lines nearby, replacing the plug-and-pull connection device (lead wire plug, grounding plug) to quickly complete on-site safety measures , safe and efficient.

In order to understand the technical content of the present invention more clearly, the overhead line plug-type connection device is referred to as the connection device for short below.

The upper side wall of the connection line plug-in head of the connection device is provided with a limit block, and the upper side wall of the connection line plug-in head is also provided with a ring-shaped card slot, and the lower end surface of the insulating shell is also opened with a limit hole corresponding to the position of the limit block. , the limit hole is connected with the insertion hole, and the upper inner wall of the cavity of the insulating shell extends downward to have a limit column that contacts the upper end of the plug head of the connecting wire; after adopting such a structure, the limit block can ensure that the connecting wire The angle and position of the plug-in head are fixed, and the locking component can be used to complete the locking of the plug-in head of the cable to prevent the plug-in head from falling off or shaking. The ring-shaped card slot can cooperate with the clamping component to limit the connection The wire plugging head shakes up and down, and the limit column can limit the insertion depth of the connecting wire plugging head.

The clamping assembly of the connection device includes a first U-shaped clamping part and a second U-shaped clamping part, and the first U-shaped clamping part and the second U-shaped clamping part are sequentially fixed up and down in the cavity of the insulating housing , the height of the first U-shaped clamping part is the same as the width of the annular slot, and the projection of the opening direction of the first U-shaped clamping part on the lower end surface of the insulating housing is the same as the opening direction of the second U-shaped clamping part. The projections of the lower end surfaces are perpendicular to each other, and the projection of the area between the two ends of the second U-shaped clamping part on the lower end surface of the insulating housing completely covers the limit hole; after adopting such a structure, the structure of the clamping assembly is more reasonable, and the connection The wire plugging head extends into the second U-shaped clamping part and the first U-shaped clamping part in turn, the second U-shaped clamping part restricts the connecting wire plugging head from moving forward and backward, and the first U-shaped clamping part restricts The plug head of the cable cannot move left and right.

The insulating shell of the connection device is also provided with a wire-removing assembly, which at least includes a sliding rod and a wire-removing clamping part, the sliding rod moves up and down, and the sliding rod vertically extends into the opening of the first U-shaped clamping part, The upper side wall of the sliding rod is provided with a protruding ring, the outer wall of the protruding ring and the sliding rod are transitioned through chamfering, the outer diameter of the protruding ring is larger than the opening width of the first U-shaped clamping part, and the retracting line clamping part is fixedly connected to the On the upper side of the protruding ring, the projection of the withdrawn wire clamping portion on the lower end surface of the insulating housing is within the projection of the opening of the first U-shaped clamping portion on the lower end surface of the insulating housing.

The annular groove of the connecting wire plugging head inserted into the insulating housing is matched with the first U-shaped clamping part of the clamping assembly. When the connecting wire plugging head withdraws, usually the first U-shaped clamping part will prevent the connecting wire from being plugged in and out. The head moves downward, and the plug head of the cable cannot be withdrawn;

After adopting the retracting wire assembly, move the sliding rod downward, the side wall of the sliding rod moves relative to the opening of the first U-shaped clamping part, and when it moves to the chamfered transition surface between the sliding rod and the convex ring, the first U-shaped clamping The width between the openings of the two parts is gradually expanded to be larger than the diameter of the side wall of the plugging head of the connecting wire. The connecting wire plugging head moves downward, and the connecting wire plugging head can be pulled out from the first U-shaped clamping part smoothly.

The cable withdrawal assembly of the connection device also includes a fixed card and a plurality of fixed plates, the second U-shaped clamping part is fixedly connected with the inner wall of the cavity of the insulating housing through the side wall of the fixed card, and the fixed card is wrapped in the second U-shaped clamped part. The sliding rod is arranged on the side wall of the fixed card, and a number of fixed plates are fixedly connected on the side wall of the fixed card. There are sliding holes on the fixed plate, and the sliding holes of all the fixed plates constitute the sliding rod up and down in turn Channel, the middle and lower parts of the sliding rod cooperate with the sliding channel; after adopting such a structure, the fixed card is wrapped on the outside of the second U-shaped clamping part, which prevents the second U-shaped clamping part from being excessively deformed. It can play the role of fixing the fixed plate, and the sliding rod moves up and down in the sliding channel.

The connection device also includes a locking assembly, the locking assembly is arranged on the lower end side wall of the cavity of the insulating housing, the locking assembly at least includes a first positioning seat, a slider, a first spring and a locking block, and the first positioning seat is fixedly connected to the On the lower side wall of the cavity of the insulating housing, the first positioning seat is close to the position of the limit hole and the insertion hole, and the side wall of the first positioning seat is provided with a chute that cooperates with the slider. On the side wall on one side of the bit hole, the slider is installed in the chute;

The locking block includes a blocking portion, a connecting rod portion and a first force receiving portion, the blocking portion and the first force receiving portion are connected through the connecting rod portion, the connecting rod portion of the blocking block runs through the first positioning seat, and the blocking portion is located at the first positioning seat. The position of the positioning seat is close to the limit hole, the first force-receiving part is located at the side of the first positioning seat away from the limit hole, the first spring is sleeved on the connecting rod part, and the first spring is against the blocking part and the second force-receiving part. Between a positioning seat, there is a slope on the side wall of the slider that contacts with the first force-receiving part of the locking block;

In the initial state, the blocking part of the first spring action locking block completely covers the limit hole; when the slider moves along the chute, the slope of the slider is opposite to the first force-bearing part of the locking block on the axis of the connecting rod part. Move in the direction until the blocking portion of the locking block moves out of the limit hole.

After adopting such a structure, the locking block can prevent the plug-in plug of the connecting wire from being inserted in the initial state (that is, when the power line is charged); when the power line is not charged, push the slider, and the locking block moves out of the position above the limit hole, and the connection Cord plugs can be plugged in.

Since the connecting device has a locking component and the limit hole is in a normally closed state, under normal circumstances, the plugging head of the connecting wire cannot be inserted into the clamping component. Whether it is charged. If there is no power, move the slider up, and use the operating lever to insert the plug-in head of the connecting wire into the connecting device; if there is power, the limit hole is closed, the connecting device is still locked, and the plug-in plug of the connecting wire Insert this connection device to ensure that no misoperation will occur when the power line is live.

The locking assembly of the connection device also includes a second positioning seat, a second spring and a stopper. The second positioning seat is fixed on the side wall of the cavity lower end of the insulating housing. The outer cover of the retreat block is equipped with a second spring, one end of the second spring leans against the second positioning seat, the other end of the second spring leans against one end of the stop block, and the other end of the stop block The part extends to the upper side of the position of the limit hole and the end of the stop block is at the lower side of the blocking part of the locking block. There is a second force-bearing part extending from the middle of the stop block, and the second force-bearing part is at the side of the locking block. On the lower side of the first force-receiving part, the second force-receiving part is in contact with the slope of the slider.

After adopting such a structure, when the plugging head of the connecting wire is inserted into the clamping assembly, the slider moves to the highest displacement along the direction of the chute, and the second force-receiving part under the first force-receiving part of the locking stopper and the slide The block is separated, and the stopper is stretched to the upper side of the position limit hole under the action of the second spring. The clamping assembly and the stopper limit all degrees of freedom of the plugging head of the drainage wire, ensuring that the plugging head and the clip of the drainage wire There will be no relative movement between the holding components.

Description of drawings

Fig. 1 is one perspective view of the embodiment of the connecting device.

Fig. 2 is the second perspective view of the embodiment of the connecting device.

Fig. 3 is the third perspective view of the embodiment of the connecting device.

Fig. 4 is a perspective view of the insulating housing, the clamp and the clamping assembly in the embodiment of the connecting device.

Fig. 5 is a perspective view of the insulating housing, the clamp and the fixing assembly in the embodiment of the connecting device.

Fig. 6 is a perspective view of the insulating housing and the locking assembly in the embodiment of the connecting device.

Fig. 7 is a perspective view of the bottom side wall of the cavity of the insulating housing in the embodiment of the connecting device.

Fig. 8 is a perspective view of the locking block in the embodiment of the connecting device.

Fig. 9 is a perspective view of the stop block in the embodiment of the connecting device.

Fig. 10 is a perspective view of the connecting wire plugging head in the embodiment of the connecting device.

Fig. 11 is a perspective view of the slider in the embodiment of the connecting device.

Detailed ways

As shown in Figures 1 to 11 (in order to clearly understand the technical content of the present invention, part of the side wall of the insulating housing 2 is omitted in Figures 1 to 7, and only the cavity of the insulating housing is shown in Figures 6 and 7 bottom side wall)

The connection device includes an insulating shell 2 , a wire clip, a connecting wire plug 3 , a clamping assembly, a wire withdrawing assembly and a locking assembly 6 .

The wire clip is the puncture wire clip 1, after the puncture wire clip 1 is hung on the power line 7, the bolt is tightened by an electric wrench, so that the puncture wire clip 1 is fixed on the power line 7, and the puncture wire clip 1 is fixed on the insulating shell 2 On the upper outer wall, the contact portion 11 of the puncture clip 1 extends into the cavity of the insulating housing 2 .

The insulating housing 2 is provided with a cavity, and the lower end surface of the insulating housing 2 is provided with an insertion hole 21 for the plugging head 3 of the connecting wire to extend into the cavity. The limit column 22 that the upper end of the wire plugging head 3 contacts.

The upper side wall of the connecting wire plugging head 3 is provided with a limit block 31, and the upper side wall of the connecting wire plugging head 3 is also provided with an annular slot 32. The positioning hole 23 communicates with the insertion hole 21 between the limiting hole 23 and the insertion hole 21 .

The clamping assembly includes a first U-shaped clamping part 41 and a second U-shaped clamping part 42, and the first U-shaped clamping part 41 and the second U-shaped clamping part 42 are sequentially fixed up and down in the cavity of the insulating housing 2 Inside, the projection of the opening direction of the first U-shaped clamping portion 41 on the lower end surface of the insulating housing 2 and the projection of the opening direction of the second U-shaped clamping portion 42 on the lower end surface of the insulating housing 2 are perpendicular to each other, and the second U-shaped clamping portion 42 is perpendicular to each other. The projection of the area between the two ends of the part 42 on the lower end surface of the insulating housing 2 completely covers the limit hole 23, and the first U-shaped clamping part 41 is fixed on the cavity side wall of the insulating housing 2, and the first U-shaped The clamping portion 41 contacts and communicates with the contact portion 11 of the puncture clip 1 , and the height of the first U-shaped clamping portion 41 is the same as the width of the annular locking groove 32 .

The insulated casing is also provided with an unwinding assembly, which includes a slide bar 52, an unwinding clamping portion 53, a fixing card 51 and two fixing plates 54, and the fixing card 51 clamps the second U-shaped clip of the assembly through bolts. The holding part 42 is fixed to the inner wall of the cavity of the insulating housing 2, and the fixing card 51 is wrapped on the outside of the second U-shaped holding part 42 to prevent excessive deformation of the second U-shaped holding part 42. Plate 54 is welded on the fixed card 51 sidewall, has sliding hole on each fixed plate 54, and the sliding hole of all fixed plates 54 forms sliding bar 52 up and down moving sliding channel successively, and the middle and lower part of sliding bar 52 and sliding channel Cooperate, the middle part of the sliding rod 52 vertically extends into the opening of the first U-shaped clamping part 41;

The upper side wall of the sliding rod 52 is provided with a protruding ring 52a, the outer side wall of the protruding ring 52a and the sliding rod are transitioned by chamfering, the outer diameter of the protruding ring 52a is larger than the opening width of the first U-shaped clamping part 41, and the wire clip The holding part 53 is welded on the upper side of the protruding ring 52a, and the opening width of the withdrawing line clamping part 53 is larger than the width of the limit column 22, but the projection of the withdrawing line clamping part 53 on the lower end surface of the insulating housing 2 is in the first U-shaped clip The opening of the holding portion 41 is within the projection of the lower end surface of the insulating housing 2 .

The locking assembly 6 is arranged on the side wall of the lower end of the cavity of the insulating housing 2, and the locking assembly 6 includes a first positioning seat 61, a slider 62, a first spring 64, a locking block 63, a second positioning seat 65, a second spring 67 and backstop 66.

The first positioning seat 61 is welded on the lower side wall of the cavity of the insulating housing 2, the first positioning seat 61 is close to the position of the limit hole 23 and the insertion hole 21, and the side wall of the first positioning seat 61 is provided with a sliding block 62. The chute 61a is located on the side wall of the first positioning seat 61 away from the limit hole 23, the chute 61a goes up and down, the cross-sectional shape of the slider 62 is a right triangle shape, and the side of the slider 62 The wall is an inclined plane 62a, and the slider 62 is installed in the slide groove 61a.

The blocking block 63 includes a blocking portion 63a, a connecting rod portion 63c and a first force receiving portion 63b. The blocking portion 63a and the first force receiving portion 63b are connected by a connecting rod portion 63c, and the connecting rod portion 63c of the blocking block 63 runs through the first force receiving portion 63b. On both sides of a positioning seat 61, the blocking portion 63a is located on the side of the first positioning seat 61 close to the limiting hole 23, and the first force receiving portion 63b is located on the side of the first positioning seat 61 away from the limiting hole 23. The spring 64 is sleeved on the connecting rod portion 63 c , the first spring 64 abuts between the blocking portion 63 a and the first positioning seat 61 , and the first force receiving portion 63 b of the locking block 63 is in contact with the slope 62 a of the sliding block 62 .

The second positioning seat 65 is also welded on the lower end side wall of the cavity of the insulating housing 2. The second positioning seat 65 is located on the side of the first positioning seat 61 away from the limit hole 23, and the backstop 66 runs through the second positioning seat 65. And the first positioning seat 61, the backstop block 66 is covered with a second spring 67, one end of the second spring 67 is against the second positioning seat 65, and the other end of the second spring 67 is against the backstop block 66 One end, the other end of the stopper 66 stretches to the upper side of the limit hole 23 position and the end of the stopper 66 is at the lower side of the blocking part 63a of the locking stopper 63, the stopper 66 is on the lower side of the stopper 63a A second force-receiving portion 66a extends from the middle of 66 . The second force-receiving portion 66a is located under the first force-receiving portion 63b of the locking block 63 . The second force-receiving portion 66a is in contact with the slope 62a of the slider 62 .

A through hole 24 is formed on the lower end surface of the insulating housing 2 corresponding to the position of the slider 62 of the locking assembly 6 .

In the initial state, the first spring 64 acts on the blocking portion 63 a of the blocking block 63 to completely cover the limiting hole 23 , and the locking block 63 prevents the limiting block 31 of the cable plug 3 from entering the insulating housing 2 .

During the grounding operation, at first utilize the electroscope to detect whether the power line 7 has electricity, if there is no electricity, push the slide block 62 to move upward through the through hole 24 on the lower end surface of the insulating housing 2 (in this embodiment, artificially push the slide block 62 to move upward The unlocking of the locking assembly 6 is completed in a certain way, but it is not limited to the above-mentioned manual method, and it can be improved to an automatic method in the future, specifically by checking whether the power line 7 has current passing through it, and if so, the unlocking mechanism on the electroscope device automatically completes the push slider 62 moves upward), the slider 62 sequentially drives the first force-bearing portion 63b of the locking block 63 and the second force-bearing portion 66a of the stopper 66 to move away from the limit hole 23 until the locking block 63 The blocking part 63a and the stop block 66 are completely moved out of the upper limit hole 23, and the limit block 31 of the connecting wire plug-in head 3 can enter the insulating housing 2 through the limit hole 23;

The connecting wire plugging head 3 is a grounding plugging head, and the connecting wire plugging head 3 is connected with the ground terminal, and the plugging and unplugging of the connecting wire plugging head 3 is used to control whether the power line 7 is grounded.

In the same way, when the power is connected, the plug-in head 3 of the connecting wire is a plug-in head for lead wires, the connecting wire is connected to the power supply, and the plug-in head 3 of the connecting wire is directly inserted into the connecting device through the operating lever to realize the power access function;

In addition, the operating lever inserts the connecting wire plugging head 3 into the clamping assembly, the second U-shaped clamping part 42 restricts the connecting wire plugging head 3 from moving forward and backward, and the first U-shaped clamping part 41 restricts the connecting wire plugging and unplugging. The plug head 3 cannot move left and right, the annular groove 32 of the connecting wire plug head 3 inserted into the insulating housing 2 cooperates with the first U-shaped clamping part 41 of the clamping assembly, when the reception line plug head 3 passes through Behind the stopper 66, the clamping assembly and the stopper 66 limit all degrees of freedom of the connecting wire plugging head 3, ensuring that no relative movement occurs between the leading connecting wire plugging head 3 and the clamping assembly.

When the connecting wire plug-in head 3 exits, the sliding rod 52 is manipulated to move downward (in this embodiment, there is a hole through the lower end surface of the insulating housing 2, and the sliding rod 52 is manually manipulated to move through this hole, but the follow-up can follow the example of pushing the slider 62 is changed to automatically complete the movement of the sliding rod 52), the opening of the first U-shaped clamping part 41 moves relative to the side wall of the sliding rod 52, and when moving to the chamfered transition surface between the sliding rod 52 and the convex ring 52a, the first The width between the openings of the U-shaped clamping portion 41 is gradually expanded to be larger than the diameter of the side wall of the connecting wire plugging head 3, and the connecting wire plugging head 3 may not be restricted by the first U-shaped clamping portion 41; at the same time , the retracting wire clamping part 53 at the upper end of the sliding rod 52 moves downward synchronously, the retracting wire clamping part 53 abuts against and drives the connecting wire plugging head 3 to move downward, and the connecting wire plugging head 3 can smoothly move from the first U Pull it out from the clamping part 41.

What has been described above is only one embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, some modifications and improvements can be made without departing from the principle of the present invention, and these should also be regarded as Belong to the protection scope of the present invention.

Claims (4)

1. An overhead line plug-in type connecting device is characterized in that:

the device at least comprises an insulating shell, a wire clamp, a connecting wire plug head and a clamping assembly;

the insulation shell is internally provided with a cavity, the lower end surface of the insulation shell is provided with an insertion hole for the connecting wire plug to extend into the cavity, the wire clamp is fixedly connected to the outer side wall of the insulation shell, the wire clamp is fixedly communicated with the power line, the contact part of the wire clamp extends into the cavity of the insulation shell, the clamping assembly is fixedly arranged in the cavity of the insulation shell and comprises at least one clamping part matched with the connecting wire plug, and the clamping part is communicated with the contact part of the wire clamp;

the upper side wall of the connecting wire plug is provided with a limiting block, the upper side wall of the connecting wire plug is also provided with an annular clamping groove, the lower end surface of the insulating shell is also provided with a limiting hole corresponding to the limiting block, the limiting hole is communicated with the inserting hole, and the inner wall of the upper side of the cavity of the insulating shell is downwards extended to form a limiting column contacted with the upper end of the connecting wire plug;

the clamping assembly comprises a first U-shaped clamping part and a second U-shaped clamping part, the height of the first U-shaped clamping part is the same as the width of the annular clamping groove, the first U-shaped clamping part and the second U-shaped clamping part are sequentially fixed in a cavity of the insulating shell up and down, the projection of the opening direction of the first U-shaped clamping part on the lower end face of the insulating shell is perpendicular to the projection of the opening direction of the second U-shaped clamping part on the lower end face of the insulating shell, and the projection of the area between the two end parts of the second U-shaped clamping part on the lower end face of the insulating shell completely covers the limiting hole;

the insulation shell is internally provided with a wire withdrawing assembly, the wire withdrawing assembly at least comprises a sliding rod and a wire withdrawing clamping part, the sliding rod moves up and down, the sliding rod vertically stretches into an opening of the first U-shaped clamping part, the side wall of the upper part of the sliding rod is provided with a convex ring, the outer side wall of the convex ring and the sliding rod are transited through a chamfer, the outer diameter of the convex ring is larger than the width of the opening of the first U-shaped clamping part, the wire withdrawing clamping part is fixedly connected to the upper side of the convex ring, and the projection of the wire withdrawing clamping part on the lower end surface of the insulation shell is positioned in the projection of the opening of the first U-shaped clamping part on the lower end surface of the insulation shell;

the locking assembly is arranged on the side wall of the lower end of the cavity of the insulating shell and at least comprises a first positioning seat, a sliding block, a first spring and a locking stop block, wherein the first positioning seat is fixedly connected on the lower side wall of the cavity of the insulating shell, the first positioning seat is close to the limiting hole and the inserting hole, a sliding groove matched with the sliding block is arranged on the side wall of the first positioning seat, the sliding groove is positioned on the side wall of the first positioning seat, which is far away from the limiting hole, and the sliding block is arranged in the sliding groove;

the locking stop block further comprises a blocking part, a connecting rod part and a first stress part, wherein the blocking part is connected with the first stress part through the connecting rod part, the connecting rod part of the locking stop block penetrates through the first positioning seat, the blocking part is positioned at one side position of the first positioning seat, which is close to the limiting hole, the first stress part is positioned at one side position of the first positioning seat, which is far away from the limiting hole, the connecting rod part is sleeved with a first spring, the first spring is abutted between the blocking part and the first positioning seat, and an inclined surface which is contacted with the first stress part of the locking stop block is formed in the side wall of the sliding block;

in the initial state, the blocking part of the first spring acting locking stop block completely covers the limiting hole; when the sliding block moves along the sliding groove, the inclined surface of the sliding block moves relative to the first stressed part of the locking stop block in the axial direction of the connecting rod part until the blocking part of the locking stop block moves out of the upper part of the limiting hole.

2. The overhead line pluggable connection of claim 1, wherein:

the wire withdrawing assembly further comprises a fixing clamp and a plurality of fixing plates, the second U-shaped clamping part is fixedly connected with the inner wall of the cavity of the insulating shell through the side wall of the fixing clamp, the fixing clamp is wrapped on the outer side of the second U-shaped clamping part, the sliding rod is arranged on the side wall of the fixing clamp, the fixing plates are fixedly connected onto the side wall of the fixing clamp, sliding holes are formed in the fixing plates, the sliding holes of all the fixing plates sequentially form a sliding rod up-and-down moving sliding channel, and the middle part and the lower part of the sliding rod are matched with the sliding channel.

3. The overhead line pluggable connection of claim 1, wherein:

the locking assembly further comprises a second positioning seat, a second spring and a backstop, wherein the second positioning seat is fixed on the side wall of the lower end of the cavity of the insulating shell, the backstop penetrates through the second positioning seat, the second spring is sleeved outside the backstop, one end of the second spring is propped against the second positioning seat, the other end of the second spring is propped against one side end part of the backstop, the other side end part of the backstop extends to the upper side of the position of the limiting hole, the end part of the backstop is positioned at the lower side of the blocking part of the blocking dog, a second stress part extends from the middle of the backstop, the second stress part is positioned at the lower side of the first stress part of the blocking dog, and the second stress part is contacted with the inclined plane of the sliding block.

4. The overhead line pluggable connection of claim 1, wherein:

the connecting wire plug is a lead plug or a grounding plug.