CN112821241B

CN112821241B - A adjustable through wires hole device for block terminal

Info

Publication number: CN112821241B
Application number: CN202110325635.9A
Authority: CN
Inventors: 孙子亿
Original assignee: State Grid Corp of China SGCC; Langfang Power Supply Co of State Grid Jibei Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; Langfang Power Supply Co of State Grid Jibei Electric Power Co Ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2022-12-09
Anticipated expiration: 2041-03-26
Also published as: CN112821241A

Abstract

The invention relates to an adjustable threading hole device for a distribution box, which comprises a telescopic plate, wherein a plurality of groups of through holes are formed in the telescopic plate, a fixed plate is fixed at the lower end of each through hole, a plurality of groups of transverse grooves are formed in the fixed plate, a movable plate is arranged in each group of transverse grooves, the opposite surfaces of the movable plates are arranged to be arc surfaces, thread passing holes are formed in the opposite surfaces of the movable plates, sleeve rods are fixed at the bottoms of the transverse grooves, a placing groove is formed in the lower surface of the movable plate, and first springs are sleeved on the sleeve rods. The invention has the beneficial effects that: the electric wire extrudees the arcwall face of fly leaf for the fly leaf removes to one side, thereby can satisfy not unidimensional electric wire's passing through, and carry out the fixed of electric wire under the reaction force of first spring, avoid the electric wire to produce and rock, can effectually seal the line hole of crossing on the block terminal, and guaranteed the straightness that hangs down of electric wire, avoided the flagging and rock of electric wire, guaranteed the normal use of device.

Description

A adjustable through wires hole device for block terminal

Technical Field

The invention relates to an adjustable threading hole device for a distribution box, and belongs to the technical field of electrical equipment.

Background

The distribution box is divided into a power distribution box, a lighting distribution box and a metering box, and is the final-stage equipment of a power distribution system. The distribution box is used in the occasions with dispersed loads and less loops; motor control centers are used in load concentration and loop-rich situations and distribute the power of a circuit of a previous level of distribution equipment to nearby loads, and the level of equipment provides protection, monitoring and control for the loads. In the production process of the distribution box, a wire passing hole for installing a wire needs to be formed in the distribution box.

The unable regulation of the line hole size of crossing on the block terminal, when carrying out the installation of electric wire, if the size is less, then after the installation, the electric wire droops easily or rocks and leads to the wiring department not hard up, and the electric wire of different sizes is different with the clearance of crossing between the line hole moreover, leads to gathering of dust easily to influence the use of device.

Disclosure of Invention

The invention aims to provide an adjustable threading hole device for a distribution box, which can effectively solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme:

an adjustable threading hole device for a distribution box comprises a telescopic plate, wherein sliding grooves are arranged on two sides of the lower surface of the telescopic plate, one end of the sliding chute is provided with an elastic part, a clamping plate is arranged below the sliding chute, the telescopic plate is arranged at the output end of the wire port of the distribution box, a plurality of groups of springs are arranged at the joint between the telescopic plates, if the output end of the wire port is positioned in the distribution box, the expansion plate needs to be extruded to be convenient for fixing in the distribution box, if the port of the installed wire is arranged outside the distribution box, the clamping plate needs to be moved and fixed outside the distribution box under the action of the elastic piece, the retractable plate is provided with a plurality of groups of through holes, the lower end of each through hole is fixedly provided with a fixed plate, a plurality of groups of transverse grooves are arranged inside the fixed plate, movable plates are arranged inside the plurality of groups of transverse grooves, the opposite surfaces of the plurality of groups of movable plates are arranged to be arc-shaped surfaces, and the opposite surfaces of the movable plates form wire passing holes, when the wires are installed, the wires penetrate through the wire passing holes and extrude the movable plate, when the wires with different sizes pass through the wire passing holes, the extrusion degree of the movable plate is different, the sleeve rod is fixed at the bottom of the transverse groove, the lower surface of the movable plate is provided with a placing groove, a first spring is sleeved on the loop bar, one end of the first spring is fixed on the side surface of the placing groove, after the wires press the movable plate, the wires are pressed and fixed under the action of the first spring, the upper surface of the movable plate is provided with a plurality of groups of convex blocks which are arranged on the same straight line, the height of the convex block is gradually increased from the arc-shaped surface of the movable plate to the other end, and a plurality of groups of supporting plates are fixed on the side surface of the fixed plate.

Further, a plurality of groups of cavities have been seted up to the side of through-hole, the side of cavity is fixed with two sets of first curb plates, install first dwang between the first curb plate, rotate through the axis of rotation between first dwang and the first curb plate and be connected, the inside of cavity is provided with the push pedal, and the last lower extreme of push pedal all is provided with the mounting, and the mounting is located the expansion plate, avoids the push pedal to take place to incline at the in-process that removes, has guaranteed the vertical migration of push pedal, the side of push pedal is fixed with two sets of second curb plates, install the second dwang between the second curb plate, rotate through the axis of rotation between second dwang and the second curb plate and be connected, and the through hole has been seted up to the other end of first dwang, and the other end of second dwang is located the through hole, is provided with the connecting axle between first dwang and the second dwang, and the one end of first dwang is passed through the connecting axle rotation with the second dwang and is connected, and first dwang junction all is less than the height of the other end between them.

Further, the inside of through-hole is provided with a plurality of groups riser, the side of riser contacts with the push pedal, utilizes the push pedal to promote the removal of riser, the top of riser side is fixed with the baffle, the slot has all been seted up to the upper and lower both sides of riser another side, the another side of riser is provided with the closing plate, the riser is fixed with the curtain with the upper end of closing plate opposite face, and the curtain has avoided impurity to enter into between the two when guaranteeing to be connected between closing plate and the riser.

Furthermore, the side of closing plate is fixed with the connecting plate, a plurality of groups mounting groove have been seted up to the one end of connecting plate, the inside of mounting groove is provided with the third spring, the other end of third spring is fixed in the side of slot, at the in-process that the riser removed, extrudees the third spring between riser and the closing plate, moreover under the reaction force of third spring for the closing plate removes, and when closing plate and electric wire contact, excessive extrusion compressed the third spring, and the connecting plate enters into inside the slot.

Furthermore, a plurality of groups of through grooves are formed in the lower surface of the expansion plate, the through grooves are located right below the cavity, a connecting rod is arranged inside each through groove, and a hemisphere is fixed to the lower end of each connecting rod.

Furthermore, the top end of the connecting rod penetrates through the cavity, the upper end of the connecting rod is in contact with the joint of the first rotating rod and the second rotating rod, a third limiting plate is fixed on the connecting rod and located in the cavity, and the third limiting plate is arranged to avoid falling off of the connecting rod in the using process.

Furthermore, a movable rod is arranged on the supporting plate and located right below the hemispheroid, a first limiting plate and a second limiting plate are respectively arranged on the movable rod, the first limiting plate is located above the supporting plate, a second spring is sleeved on the movable rod, the lower end of the second spring is located above the second limiting plate, and the first limiting plate and the second limiting plate can effectively prevent the movable rod from falling off.

Further, a plurality of groups of grooves have been seted up to the upper surface of expansion plate, the even distribution of recess is around the through-hole, it has the sealing member to bond on the inner wall of recess, and the setting of sealing member, the effectual in-process of avoiding using, the use of device has been guaranteed in the entering of some solid particles.

Further, the one end of baffle lower surface is fixed with the sill bar, the sill bar is located the recess, the ball is installed to the lower extreme of sill bar, and the baffle can shelter from the space that exposes outside after removing the riser, and the ball then reduces the frictional force that produces in the removal process, has guaranteed the smooth removal of riser.

The invention provides a using method of an adjustable threading hole device for a distribution box, which comprises the following specific steps:

the method comprises the following steps: the expansion plate is arranged on the outer side of the distribution box, and is fixed on the outer side of the distribution box by utilizing the movement of the clamping plate and the action of the elastic part, or the expansion plate is extruded and is arranged in the distribution box, so that the electric wires are installed;

step two: the electric wire extrudes the movable plate through the wire passing hole, the movable plate fixes the electric wire under the action of the first spring, the movable rod is extruded upwards by the lug on the upper surface of the movable plate while the movable plate moves, and the size of the lug is gradually reduced when the movable plate moves, so that the electric wires with different sizes can be correspondingly fixed;

step three: when the movable plate moves, the movable rod upwards extrudes the hemispheroid, so that the moving directions of the vertical plates are different according to the difference of the ascending heights of the hemispheroids, and the gap between the wire and the through hole can be sealed;

step four: when the movable rod moves upwards, the connecting rod also moves upwards, and the connecting rod pushes the joint of the first rotating rod and the second rotating rod, so that the push plate pushes the vertical plate to move, and the vertical plate moves more stably;

step five: through above step to make the electric wire be in the vertical state, wrapping up the rubber buffer on the electric wire, and install in the electric wire conduit of block terminal, reduced the frequency that electric wire wiring department broke down in the use.

Compared with the prior art, the invention has the following beneficial effects:

1. the fixing plate is arranged below the through hole, a plurality of groups of fan-shaped transverse grooves are formed in the fixing plate, the sleeve rod is fixed at the bottom of each transverse groove, the first spring is arranged on the sleeve rod, the movable plates with corresponding sizes are installed in the transverse grooves, the placing grooves are formed in the lower portions of the movable plates, when the electric wires enter the wire passing holes through the upper portions of the sleeve rods, the electric wires extrude the arc-shaped surfaces of the movable plates, the movable plates move towards one side, the electric wires with different sizes can pass through the wire passing holes, the electric wires are fixed under the reactive force of the first springs, and the electric wires are prevented from shaking;

2. when the movable plate moves to one side, the convex block on the upper surface of the movable plate extrudes the movable rod, the movable rod moves upwards, the movable rod drives the hemisphere to move upwards, the hemisphere moves to extrude the vertical plate, the vertical plate moves to one side, the connecting rod is arranged above the hemisphere, the connecting rod is positioned below the joint of the first rotating rod and the second rotating rod, the hemisphere ascends to drive the connecting rod to ascend, the joint of the first rotating rod and the second rotating rod is extruded, the first rotating rod and the second rotating rod rotate by taking the connecting shaft as the center, the horizontal length of the first rotating rod and the second rotating rod changes in the same range as the moving range of the hemisphere extrusion vertical plate, the vertical plate can be guaranteed to move horizontally, the sealing plate can be pushed to move towards the direction close to the electric wire, the sealing of the gap between the electric wire and the through hole is achieved, the gathering of dust in the installation process is avoided, the wire passing hole on the distribution box can be effectively sealed, the verticality of the electric wire is guaranteed, the sagging and the shaking of the electric wire are avoided, and the normal use of the device is guaranteed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

Fig. 1 is a block diagram of an adjustable stringing hole assembly for an electric distribution box according to the present invention.

Fig. 2 is a partial cross-sectional view of an adjustable stringing hole assembly for an electrical box according to the present invention.

Fig. 3 is an enlarged view of a portion of an adjustable stringing hole assembly for an electrical distribution box according to the present invention, shown at a point a in fig. 2.

Fig. 4 is an enlarged view of a portion of an adjustable stringing hole assembly according to the present invention shown at B in fig. 2.

Fig. 5 is an enlarged view of a portion of an adjustable stringing hole assembly according to the present invention, shown at C in fig. 2.

Reference numbers in the figures: 1. a retractable plate; 2. a fixing plate; 3. a sealing plate; 4. a baffle plate; 5. a through hole; 6. a movable plate; 7. a wire passing hole; 8. a placement groove; 9. a loop bar; 10. a first spring; 11. a transverse groove; 12. a bump; 13. a support plate; 14. a movable rod; 15. a first limiting plate; 16. a second spring; 17. a second limiting plate; 18. a hemisphere; 19. a connecting rod; 20. a through groove; 21. a third limiting plate; 22. a cavity; 23. a first side plate; 24. a first rotating lever; 25. a second side plate; 26. a second rotating rod; 27. a connecting shaft; 28. pushing a plate; 29. a vertical plate; 30. a connecting plate; 31. a curtain; 32. mounting grooves; 33. a slot; 34. a third spring; 35. a groove; 36. a seal member; 37. a bottom bar; 38. a ball bearing; 39. a chute; 40. clamping a plate; 41. an elastic member.

Detailed Description

The present invention will be further described with reference to the following detailed description, wherein the drawings are for illustrative purposes only and are not intended to be limiting, wherein certain elements may be omitted, enlarged or reduced in size, and are not intended to represent the actual dimensions of the product, so as to better illustrate the detailed description of the invention.

Example 1

As shown in fig. 1 and 2, an adjustable threading hole device for distribution box, including expansion plate 1, spout 39 has been seted up to the both sides of expansion plate 1 lower surface, elastic component 41 is installed to the one end of spout 39, cardboard 40 is installed to the below of spout 39, a plurality of groups of through-hole 5 have been seted up on expansion plate 1, the lower extreme of through-hole 5 is fixed with fixed plate 2, a plurality of groups of cross slots 11 have been seted up to the inside of fixed plate 2, the inside of a plurality of groups of cross slots 11 is provided with fly leaf 6, the opposite face of a plurality of groups of fly leaf 6 sets up to the arcwall face, and the opposite face of fly leaf 6 forms line hole 7, the bottom of cross slot 11 is fixed with loop bar 9, standing groove 8 has been seted up to the lower surface of fly leaf 6, first spring 10 has been cup jointed on loop bar 9, the one end of first spring 10 is fixed in the side of standing groove 8, the upper surface of fly leaf 6 is provided with a plurality of groups lug 12, the side of fixed plate 2 is fixed with a plurality of groups backup pad 13.

The upper surface of the expansion plate 1 is provided with a plurality of groups of grooves 35, the grooves 35 are uniformly distributed around the through hole 5, the inner wall of each groove 35 is bonded with a sealing element 36, the lower surface of the expansion plate 1 is provided with a plurality of groups of through grooves 20, the through grooves 20 are positioned right below the cavity 22, a connecting rod 19 is arranged inside each through groove 20, and the lower end of each connecting rod 19 is fixed with a hemispheroid 18; the supporting plate 13 is provided with a movable rod 14, the movable rod 14 is positioned under the hemispheroid 18, the movable rod 14 is provided with a first limiting plate 15 and a second limiting plate 17, the first limiting plate 15 is positioned above the supporting plate 13, the movable rod 14 is sleeved with a second spring 16, and the lower end of the second spring 16 is positioned above the second limiting plate 17.

By adopting the technical scheme: after fixing expansion plate 1, pass through wire hole 7 with the electric wire, the edge of crossing wire hole 7 is the arcwall face, is convenient for to the extrusion of fly leaf 6 to reduced the damage to the electric wire epidermis, moreover after the electric wire passes through wire hole 7, act on first spring 10 to the extrusion of fly leaf 6, and fix through first spring 10's reaction force, avoid the electric wire to take place the slope.

Example 2

As shown in fig. 1-5, an adjustable through wires hole device for block terminal, including expansion plate 1, spout 39 has been seted up to the both sides of expansion plate 1 lower surface, elastic component 41 is installed to the one end of spout 39, cardboard 40 is installed to the below of spout 39, a plurality of groups through-hole 5 have been seted up on expansion plate 1, the lower extreme of through-hole 5 is fixed with fixed plate 2, a plurality of groups cross slot 11 have been seted up to the inside of fixed plate 2, the inside of a plurality of groups cross slot 11 is provided with fly leaf 6, the opposite face of a plurality of groups fly leaf 6 sets up to the arcwall face, and the opposite face of fly leaf 6 forms line hole 7, the upper surface of fly leaf 6 is provided with a plurality of groups lug 12.

A plurality of groups of cavities 22 have been seted up to the side of through-hole 5, the side of cavity 22 is fixed with two sets of first curb plates 23, install first dwang 24 between the first curb plate 23, the inside of cavity 22 is provided with push pedal 28, the side of push pedal 28 is fixed with two sets of second curb plates 25, install second dwang 26 between the second curb plate 25, first dwang 24 passes through connecting axle 27 rotation with the one end of second dwang 26 and is connected, the inside of through-hole 5 is provided with a plurality of groups riser 29, the side of riser 29 contacts with push pedal 28, the top of riser 29 side is fixed with baffle 4, the one end of baffle 4 lower surface is fixed with sill 37, sill 37 is located the recess 35, ball 38 is installed to the lower extreme of sill 37, slot 33 has all been seted up to the upper and lower both sides of riser 29 side, another side of riser 29 is provided with closing plate 3, the upper end of riser 29 and closing plate 3 opposite face is fixed with curtain 31, the side of closing plate 3 is fixed with connecting plate 30, a plurality of groups of mounting groove 32 has been seted up to the one end of connecting plate 30, the inside of third spring 32 is provided with third spring 34 is fixed at the side of slot 33.

A plurality of groups of grooves 35 have been seted up to the upper surface of expansion plate 1, the even distribution of groove 35 is around through-hole 5, it has sealing member 36 to bond on the inner wall of groove 35, a plurality of groups of logical groove 20 have been seted up to the lower surface of expansion plate 1, it is located cavity 22 directly under to lead to groove 20, the inside that leads to groove 20 is provided with connecting rod 19, the lower extreme of connecting rod 19 is fixed with hemispheroid 18, the top of connecting rod 19 is run through to cavity 22, the upper end of connecting rod 19 contacts with the junction of first dwang 24 and second dwang 26, be fixed with third limiting plate 21 on the connecting rod 19, and third limiting plate 21 is located cavity 22.

The supporting plate 13 is provided with a movable rod 14, the movable rod 14 is positioned under the hemispheroid 18, the movable rod 14 is provided with a first limiting plate 15 and a second limiting plate 17, the first limiting plate 15 is positioned above the supporting plate 13, the movable rod 14 is sleeved with a second spring 16, and the lower end of the second spring 16 is positioned above the second limiting plate 17.

By adopting the technical scheme: when wires of different sizes pass through the wire passing hole 7, the displacement generated by pressing the movable plate 6 is different, the larger the size of the wire is, the larger the displacement of the movable plate 6 is, the smaller the gap between such wire and the through hole 5 is, the higher the height of the movable plate 6 is, the protrusion 12 is positioned on the same straight line, and the height of the protrusion 12 is higher in the direction that the arc of the movable plate 6 faces the other end, when the protrusion 12 presses the movable rod 14, the movable rod 14 presses the upper hemisphere 18, the higher the height of the protrusion 12 is, the higher the height of the hemisphere 18 rises, the larger the pressing amplitude of the hemisphere 18 on the vertical plate 29 is, the larger the pressing of the connecting rod 19 at the upper end of the hemisphere 18 on the first rotating rod 24 and the second rotating rod 26 is, the length of the horizontal plane where the hemisphere 18 and the first rotating rod 24 and the second rotating rod 26 are positioned is larger, so that the vertical plate 29 moves stably, the pressing reaction of the vertical plate 29 on the third spring 34 acts on the sealing plate 3, thereby achieving the contact sealing with the wires of different sizes, and the sealing plate 29 can shield impurities from entering the through groove 36 in the sealing plate 4, and the sealing plate 35 can be prevented from entering the gap between the vertical plate 35.

Example 3

the method comprises the following steps: arranging the expansion plate 1 at the outer side of the distribution box, fixing the expansion plate 1 at the outer side of the distribution box by utilizing the movement of the clamping plate 40 and the action of the elastic part 41, or extruding the expansion plate 1, arranging the expansion plate 1 in the distribution box, and installing electric wires;

step two: the electric wire is pressed on the movable plate 6 through the wire passing hole 7, the movable plate 6 fixes the electric wire under the action of the first spring 10, the movable rod 14 is pressed upwards by the lug 12 on the upper surface of the movable plate 6 while the movable plate 6 moves, and the size of the lug 12 is gradually reduced when the movable plate 6 moves, so that the electric wires with different sizes can be correspondingly fixed;

step three: when the movable plate 6 moves, the movable rod 14 presses the hemisphere 18 upwards, so that the moving direction of the vertical plate 29 is different according to the difference of the rising height of the hemisphere 18, and the gap between the electric wire and the through hole 5 can be sealed;

step four: when the movable rod 14 moves upwards, the connecting rod 19 also moves upwards, and the connecting rod 19 pushes the joint of the first rotating rod 24 and the second rotating rod 26, so that the push plate 28 pushes the vertical plate 29 to move, and the movement of the vertical plate 29 is stable;

By adopting the technical scheme: when the whole device is used for installing the electric wire, the perpendicularity of the electric wire is ensured through the movable plate 6, and when the movable plate 6 moves, the convex block 12 on the upper surface of the movable plate 6 extrudes the movable rod 14, so that the corresponding amplitude of the sealing plate 3 is moved, the corresponding rubber plug is selected according to the position of the sealing plate 3, the rubber plug is plugged into a gap of the electric wire perforation, the dust gathering caused by the gap generated in the installation process due to the inclination of the electric wire is avoided, and the damage to the electric wire due to the inclination of the electric wire in the installation process is effectively avoided.

It should be noted that, the invention is an adjustable threading hole device for a distribution box, when in use, the through hole 5 on the expansion plate 1 has the same size with the threading interface of the distribution box, the sealing plate 3 is embedded on the surface of the through hole 5, a plurality of groups of springs are arranged at the expansion part between the expansion plates 1, according to the threading requirement of the distribution box, the expansion plate 1 is arranged at the outlet end of the distribution box where the electric wire enters, if the outlet end is positioned inside the distribution box, the expansion plate 1 needs to be extruded and fixed, if the outlet end is positioned outside the distribution box, the expansion plate 1 is fixed outside the distribution box by using the movement of the clamping plate 40 and the action of the elastic part 41, when the electric wire is installed, the electric wire extrudes the movable plate 6 through the threading hole 7, the edge of the threading hole 7 is arranged into an arc surface, thereby avoiding the damage to the electric wire, and being beneficial to the quick movement of the movable plate 6, the movable plate 6 presses the first spring 10 in the moving process, when the electric wire passes through the wire passing hole 7, the movable plate 6 fixes the electric wire under the reaction force of the first spring 10, so that the electric wire is in a vertical state, the upper surface of the movable plate 6 is provided with the bump 12, the bump 12 is positioned right below the movable rod 14, when the movable plate 6 moves, the bump 12 on the upper surface of the movable plate 6 presses the movable rod 14 upwards, the bump 12 is diffused outwards by the arc surface of the movable plate 6, the height of the bump 12 is higher and higher, and the bump 12 is positioned on a straight line, if the size of the electric wire is smaller, the higher the bump 12 positioned below the movable rod 14 is, the higher the movable rod 14 rises, the higher the height of the movable rod 18 rises, the connecting rod 19 at the upper end of the hemisphere 18 presses the rotating rod at the connection position between the first rotating rod 24 and the second rotating rod 26 more greatly, the extrusion amplitude of the hemisphere 18 to the vertical plate 29 is consistent with the change of the length of the horizontal plane where the connection part of the first rotating rod 24 and the second rotating rod 26 rotates, so that the vertical plate 29 can be guaranteed to move stably, the less the movable plate 6 moves, the smaller the size of the electric wire is, the larger the gap between the electric wire and the through hole 5 is, so that the electric wires with different sizes can be correspondingly fixed and sealed, according to the displacement caused by the movement of the baffle 4, when the electric wire is located at the center of the through hole of the distribution box, the gap between the electric wire and the through hole is determined, the electric wire can be in a vertical state through the steps, the rubber plug with the corresponding size is wrapped on the electric wire and is installed in the through hole of the distribution box, when only the rubber plug is used, the partial silk thread of the electric wire is broken, the normal use of the electric wire is guaranteed, and the phenomenon that the wiring part of the electric wire breaks down in the use process due to the inclined electric wire is avoided.

While the foregoing is directed to the preferred embodiment of the present invention, the basic principles and features of the invention and the advantages thereof have been shown and described, it will be appreciated by those skilled in the art that the invention is not limited by the foregoing embodiments, which are merely illustrative of the principles of the invention, but rather, is susceptible to various changes and modifications without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims

1. The utility model provides an adjustable through wires hole device for block terminal, includes expansion plate (1), spout (39) have been seted up to the both sides of expansion plate (1) lower surface, elastic component (41) are installed to the one end of spout (39), cardboard (40) are installed to the below of spout (39), a plurality of groups through-hole (5) have been seted up on expansion plate (1), the lower extreme of through-hole (5) is fixed with fixed plate (2), its characterized in that: a plurality of groups of transverse grooves (11) are formed in the fixed plate (2), a movable plate (6) is arranged in the plurality of groups of transverse grooves (11), the opposite surface of the plurality of groups of movable plates (6) is set to be an arc-shaped surface, a wire passing hole (7) is formed in the opposite surface of the movable plate (6), a sleeve rod (9) is fixed at the bottom of each transverse groove (11), a placing groove (8) is formed in the lower surface of the movable plate (6), a first spring (10) is sleeved on each sleeve rod (9), one end of each first spring (10) is fixed on the side surface of the placing groove (8), a plurality of groups of convex blocks (12) are arranged on the upper surface of the movable plate (6), and a plurality of groups of supporting plates (13) are fixed on the side surface of the fixed plate (2); a plurality of groups of vertical plates (29) are arranged in the through hole (5), the side surfaces of the vertical plates (29) are in contact with the push plate (28), a baffle (4) is fixed at the top end of the side surface of each vertical plate (29), slots (33) are formed in the upper side and the lower side of the other side surface of each vertical plate (29), a sealing plate (3) is arranged on the other side surface of each vertical plate (29), and a curtain (31) is fixed at the upper end of the opposite surface of each vertical plate (29) and the corresponding sealing plate (3); a connecting plate (30) is fixed on the side surface of the sealing plate (3), a plurality of groups of mounting grooves (32) are formed in one end of the connecting plate (30), a third spring (34) is arranged in each mounting groove (32), and the other end of each third spring (34) is fixed on the side surface of each slot (33); the telescopic plate is characterized in that a plurality of groups of through grooves (20) are formed in the lower surface of the telescopic plate (1), the through grooves (20) are located under the cavity (22), a connecting rod (19) is arranged inside the through grooves (20), and a hemispheroid (18) is fixed at the lower end of the connecting rod (19).

2. The adjustable stringing hole assembly as claimed in claim 1, wherein: the top end of the connecting rod (19) penetrates through the cavity (22), the upper end of the connecting rod (19) is in contact with the joint of the first rotating rod (24) and the second rotating rod (26), a third limiting plate (21) is fixed on the connecting rod (19), and the third limiting plate (21) is located in the cavity (22).

3. The adjustable stringing hole assembly of claim 1, further comprising: install movable rod (14) on backup pad (13), movable rod (14) are located hemisphere (18) under, install first limiting plate (15) and second limiting plate (17) on movable rod (14) respectively, first limiting plate (15) are located the top of backup pad (13), second spring (16) have been cup jointed on movable rod (14), the lower extreme of second spring (16) is located the top of second limiting plate (17).

4. The adjustable stringing hole assembly of claim 1, further comprising: a plurality of groups of grooves (35) are formed in the upper surface of the expansion plate (1), the grooves (35) are evenly distributed around the through hole (5), and sealing elements (36) are bonded on the inner wall of the grooves (35).

5. The adjustable stringing hole assembly of claim 1, further comprising: one end of the lower surface of the baffle plate (4) is fixed with a bottom rod (37), the bottom rod (37) is positioned in the groove (35), and the lower end of the bottom rod (37) is provided with a ball (38).

6. The use of an adjustable stringing hole assembly according to any one of claims 1-5 in an electrical distribution cabinet, wherein: the method comprises the following specific steps:

the method comprises the following steps: the expansion plate (1) is arranged on the outer side of the distribution box, the expansion plate (1) is fixed on the outer side of the distribution box by utilizing the movement of the clamping plate (40) and the action of the elastic piece (41), or the expansion plate (1) is extruded, the expansion plate (1) is arranged in the distribution box, and the electric wire is installed;

step two: the electric wire extrudes the movable plate (6) through the wire passing hole (7), the movable plate (6) fixes the electric wire under the action of the first spring (10), the movable rod (14) is extruded upwards by the lug (12) on the upper surface of the movable plate (6) while the movable plate (6) moves, and the size of the lug (12) is gradually reduced when the movable plate (6) moves, so that the electric wires with different sizes can be correspondingly fixed;

step three: when the movable plate (6) moves, the movable rod (14) upwards presses the hemisphere (18), so that the moving direction of the vertical plate (29) is different according to the difference of the rising height of the hemisphere (18), and the gap between the electric wire and the through hole (5) can be sealed;

step four: when the movable rod (14) moves upwards, the connecting rod (19) also moves upwards, and the connecting rod (19) pushes the joint of the first rotating rod (24) and the second rotating rod (26), so that the push plate (28) pushes the vertical plate (29) to move;

step five: through the steps, the electric wire is in a vertical state, the rubber plug is wrapped on the electric wire, and the electric wire is installed in an electric wire pipeline of the distribution box.