CN114400594B

CN114400594B - Fixing device for electric wire installation

Info

Publication number: CN114400594B
Application number: CN202111433291.XA
Authority: CN
Inventors: 佟仁友; 邹艳娜; 任宇
Original assignee: Anhui Feima Cable Co ltd
Current assignee: Anhui Feima Cable Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2023-04-28
Anticipated expiration: 2041-11-29
Also published as: CN114400594A

Abstract

The utility model relates to the technical field of wire installation, and discloses a fixing device for wire installation, which comprises a fixing box for fixing a plurality of wires and a transmission box fixed at the top of the fixing box, wherein at least five through threading openings are formed in the fixing box, lifting assemblies with the same number as the threading openings are arranged on the left side wall of the transmission box to prevent the wires from being lifted excessively long, a rotating part is arranged on the right side wall of the transmission box, an installation assembly arranged on an electric pole is arranged at the top of the transmission box, and a first rotating rod, a second rotating rod, a third rotating rod, a fourth rotating rod, a fifth rotating rod and a driving rod are rotatably arranged in the transmission box. The utility model solves the problems that the prior art has single structure, is relatively time-consuming and labor-consuming, has low efficiency aiming at the arrangement and fixation of a plurality of wires, and is easy to loosen when the wires with different specifications and sizes are fixed, and the wires with smaller specifications are fixed in the prior art.

Description

Fixing device for electric wire installation

Technical Field

The utility model relates to the technical field of electric wire installation, in particular to a fixing device for electric wire installation.

Background

The electric wire is the wire that is used for transmitting electric energy, and it comprises one or several flexible wires, and the outside is wrapped with soft sheath, and the electric wire is when the installation, and most utilization is used for the electric wire anchor clamps to carry out the centre gripping to the electric wire and reaches the fixed action, and is used for the electric wire anchor clamps to fix the electric wire, can only fix single electric wire, and the arrangement of arranging for many electric wires is fixed, and the reuse electric wire anchor clamps are fixed, and is not only comparatively time consuming and laborious to inefficiency.

Chinese patent publication No. CN203421298U discloses a slot type wire fixing seat, the lower end of the fixing seat is a slot head of arrow type, and the upper end of the fixing seat is a wire fixing clip; the wire fixing clamp is provided with a concave notch. The clamping groove type wire fixing seat can fix or take out the wire through the concave notch, and the arrow type clamping groove head can fix the wire at any place with the clamping groove.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a fixing device for wire installation, which solves the problems that the prior art is single in structure, is relatively time-consuming and labor-consuming, is low in efficiency and is easy to loosen when wires with different specifications are fixed, and wires with smaller specifications are fixed in the prior art.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a fixing device for electric wire installation, including carrying out the fixed case of many electric wires and fixing the transmission case at fixed case top, set up the penetrating threading mouth of not less than five left and right sides in the fixed case, and set up the lifting assembly unanimous with threading mouth quantity and prevent the electric wire overlength to lift at the left side wall of transmission case, and be provided with the rotation portion at the right side wall of transmission case, and be provided with the installation component of installing on the pole at the top of transmission case, the inside rotation of transmission case is provided with first bull stick, the second bull stick, the third bull stick, fourth bull stick and fifth bull stick and initiative pole, wherein all cup joint gear A on the outer disc of second bull stick and fourth bull stick and fifth bull stick in the transmission case, three gear A presents the triangle and distributes and carry out transmission connection through the chain, be provided with driven gear on the body of initiative pole, driven gear and gear A on the body of initiative pole and the body of the third bull stick are provided with gear B, this three gear B also takes the triangle form and distributes and carries out the transmission assembly and carry out the transmission with the transmission through the transmission of chain and carry out the transmission in the fixed quantity of transmission mouth of transmission case;

the transmission assembly comprises a transmission box fixed at the inner bottom of the transmission box, the transmission box is an inner hollow box body, each transmission box is respectively positioned vertically below each rod body, a rotating shaft is rotatably arranged in the center of the transmission box, bevel gears are arranged on the rods of the first rotating rod, the driving rod, the third rotating rod, the fourth rotating rod, the fifth rotating rod and the five rotating shafts, the two bevel gears in the same group are in meshed transmission, a pinion is further arranged on the rod body of each rotating shaft, two straight racks are in meshed transmission, connecting rods extending into threading openings below are respectively arranged at the bottoms of the two straight racks, and clamping plates are arranged at the rod ends of the connecting rods positioned in the threading openings to clamp wires.

Preferably, the transmission box below the straight rack is provided with a through hole communicated with the inside of the threading hole, sliding grooves are formed in the inner walls of the through hole, sliding seats are arranged at the bottoms of the straight rack, the connecting rod is located below the sliding seats, and sliding blocks extending into the sliding grooves are arranged on the side walls of the sliding seats corresponding to the sliding grooves to assist the straight rack to move.

Preferably, the lifting assembly comprises a reciprocating screw rod arranged on the left side wall of the transmission case, one ends of the five reciprocating screw rods are respectively arranged on rod ends of the first rotating rod, the second rotating rod, the third rotating rod, the fourth rotating rod and the fifth rotating rod, a sliding seat is connected to a threaded surface of the reciprocating screw rod in a threaded manner, a supporting rod is fixedly arranged at the bottom of the sliding seat, and a through ring is fixedly arranged at one end of the supporting rod, deviating from the sliding seat.

Preferably, the through ring and the threading opening are positioned on the same Y-axis extension line, and the inner ring surface of the through ring is sleeved with a rubber pad.

Preferably, the installation component is including the humanoid board of fixed mounting at the transmission case top, is provided with solid fixed ring at the one end that the humanoid board was carried away from the transmission case, and gu fixed ring divide into two semi-annular portions, carries out swing joint through the hinge between two semi-annular portions, all is provided with the rigid coupling piece in the one end that two semi-annular portions deviate from the hinge simultaneously, and the rigid coupling piece is the rectangular plate that has the through-hole, is provided with the bolt between two rigid coupling pieces to threaded connection has the nut on the bolt.

Preferably, the rotating part comprises a rotary plate arranged on the rod end of the second rotary rod, the rotary plate is used as a corresponding transmission box wall, a ring groove is formed in the box wall of the transmission box, a plurality of limiting holes are formed in the groove of the ring groove, a through hole is eccentrically formed in the disc surface of the rotary plate, and a bolt is arranged in the through hole to be matched with the limiting holes to play a role in stabilizing the rotary plate.

Preferably, the rotating part further comprises a motor bin fixedly arranged on the right side wall of the transmission case, a battery box is arranged at the bottom of the motor bin, a servo motor is fixedly arranged in the motor bin, the output end of the servo motor is butt-jointed and arranged on the rod end of the second rotating rod, a storage battery is arranged in the battery box, and the storage battery is electrically connected with the servo motor.

Preferably, four rectangular fixing rods are arranged at the top of the transmission case, and the same solar panel is fixedly arranged at the rod ends of the four fixing rods.

Preferably, a plurality of protrusions are arranged on the clamping surface of the fixing ring, so that friction force between the fixing ring and the electric pole is increased.

(III) beneficial effects

Compared with the prior art, the utility model provides a fixing device for wire installation, which has the following beneficial effects:

1. according to the utility model, the turntable is manually rotated through the transmission assembly, so that the turntable drives the second rotating rod to rotate, the plurality of rotating rods are further rotated due to chain transmission between the gears A and the gears B, the pinion on the transmission assembly is rotated due to meshing transmission of the bevel gears between the plurality of rotating rods and the plurality of rotating shafts, the movement of the straight rack is promoted due to meshing transmission between the pinion and the straight rack, and the two clamping plates are further used for clamping and fixing the electric wires, so that the electric wires are clamped and fixed, and the operation is convenient.

2. According to the utility model, through the lifting assembly, when the rotating rods rotate, the reciprocating screw rod is driven to rotate, so that the sliding seat is promoted to move, the through ring is further promoted to move, and the overlong electric wire can be prevented from loosening when the electric wire is fixed under the lifting of the through ring.

3. According to the utility model, through the installation assembly, the fixing ring is utilized, the fixing ring is divided into two semi-annular parts, the two semi-annular parts are connected through the hinge, and the fixing part is matched with the bolt for use, so that the fixing installation between the fixing part and the electric pole is realized, the practicability of the device is further improved, and the whole installation and the disassembly are convenient.

4. According to the utility model, through the servo motor and the solar panel, the servo motor is replaced by the turntable, the mechanical movement replaces manual rotation, so that the working strength of workers is reduced, and meanwhile, the servo motor can ensure long-time movement by matching with the solar panel and the electric connection between the solar panel and the storage battery, so that the electric wire is stably clamped and fixed.

Drawings

FIG. 1 is a block diagram of the first embodiment of the present utility model;

FIG. 2 is an internal block diagram of the present utility model;

FIG. 3 is an enlarged view of the structure of FIG. 1A according to the present utility model;

FIG. 4 is an enlarged view of the structure of FIG. 2B in accordance with the present utility model;

FIG. 5 is a block diagram of a transmission assembly of the present utility model;

FIG. 6 is an enlarged view of the structure of FIG. 5 at C in accordance with the present utility model;

fig. 7 is a diagram showing a second construction of the present utility model.

In the figure: 1. a fixed box; 2. a transmission case; 3. a threading opening; 4. a lifting assembly; 401. a reciprocating screw rod; 402. a sliding seat; 403. a support rod; 404. a ring is opened; 5. a mounting assembly; 501. a human-shaped plate; 502. a fixing ring; 503. a fixed connection piece; 6. a rotating part; 601. a turntable; 602. a ring groove; 603. a plug pin; 604. a limiting hole; 7. a first rotating lever; 8. a second rotating rod; 9. a driving rod; 10. a third rotating rod; 11. a fourth rotating lever; 12. a fifth rotating lever; 13. a gear A; 14. a gear B; 15. a transmission assembly; 1501. a transmission box; 1502. a rotating shaft; 1503. a pinion gear; 1504. a connecting rod; 1505. a clamping plate; 1506. a straight rack; 1507. a through port; 1508. a slide; 1509. a chute; 16. bevel gears; 17. a driven gear; 18. a motor bin; 19. a battery case; 20. a storage battery; 21. a servo motor; 22. a fixed rod; 23. a solar panel.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

As shown in fig. 1-6, the present utility model provides a technical solution: a fixing device for electric wire installation, including carrying out the fixed case 1 of many electric wires and fix the transmission case 2 at fixed case 1 top, pass through 3 is about being provided with to the inside of fixed case 1, and be provided with rotation portion 6 at transmission case 2's right side wall, transmission case 2's inside rotation is provided with first bull stick 7, second bull stick 8, third bull stick 10, fourth bull stick 11 and fifth bull stick 12 and initiative pole 9, the height of second bull stick 8 is higher than initiative pole 9, and initiative pole 9's height is higher than the height of fourth bull stick 11 and fifth bull stick 12, wherein fourth bull stick 11 is in same horizontal line with fifth bull stick 12, and the height of fourth bull stick 11 is higher than the height of first bull stick 7 and third bull stick 10, first bull stick 7 is in same horizontal line with third bull stick 10, so as to ensure that drive assembly 15 can synchronous operation, wherein second bull stick 8 and fourth bull stick 11 and fifth bull stick 12 are high, the height that the transmission is higher than fourth bull stick 11 and fifth bull stick 12, the transmission is equipped with the transmission chain and is equipped with on the transmission case 13 and is equipped with the transmission chain and is equipped with the transmission 13 and is equipped with the transmission triangle and is equipped with the transmission chain and the transmission 13 on the transmission case 13 and is equipped with the transmission 13 and the transmission side of 13 on the transmission case 2.

Further, the transmission assembly 15 includes a transmission box 1501 fixed at the bottom of the transmission box 2, the transmission box 1501 is a hollow box body inside, each transmission box 1501 is located vertically below the respective rod body, a rotating shaft 1502 is rotatably installed at the center of the inside of the transmission box 1501, bevel gears 16 are all arranged on the rod bodies of the first rotating rod 7, the driving rod 9, the third rotating rod 10, the fourth rotating rod 11, the fifth rotating rod 12 and the five rotating shafts 1502, each transmission box 1501 is a group, and meshed transmission is carried out between the two bevel gears 16 of the same group, a pinion 1503 is further arranged on the rod body of each rotating shaft 1502, the pinion 1503 is meshed and transmitted with two straight racks 1506, the bottoms of the two straight racks 1506 are all provided with connecting rods 1504 extending into the lower portion, the rod ends of the connecting rods 1504 are provided with clamping plates 1505 for electric wires, the clamping plates 1505 are consistent with the inner ring openings 1501 of the threading openings 3, the transmission boxes located below the threading openings 1507 are provided with the inner walls of the threading openings 3, the two straight racks 1507 are meshed with the connecting rods 1509, the two straight racks 1503 are meshed with the connecting rods 1509, and the two straight racks are meshed with the two straight racks 1503, and the two straight racks 1503 are meshed with the two straight racks 1503, and the two straight racks are meshed with the straight racks 1509, and the two straight racks are meshed with the straight racks 1503, and further meshed with the straight racks, and the two straight racks are meshed with the straight racks, and further down.

Further, the rotating portion 6 includes a rotary disc 601 disposed at the rod end of the second rotary rod 8, a ring groove 602 is formed on the wall of the transmission case 2 corresponding to the rotary disc 601, the outer diameter of the ring groove 602 is consistent with that of the rotary disc 601, a plurality of limiting holes 604 are formed in the groove of the ring groove 602, a through hole is eccentrically formed in the disc surface of the rotary disc 601, and a plug 603 is disposed in the through hole to cooperate with the limiting holes 604 to stabilize the rotary disc 601, fix the rotary disc 601, and prevent rotation of the rotary rods.

Working principle: during operation, a plurality of parallel wires are transmitted into the threading opening 3, at this time, a worker rotates the rotary table 601, so that the rotary table 601 drives the second rotary rod 8 to rotate, the gear A13 between the second rotary rod 8, the fourth rotary rod 11 and the fifth rotary rod 12 is used for carrying out chain transmission, the rotation of the fourth rotary rod 11 and the fifth rotary rod 12 is carried out, the gear A13 positioned at the second rotary rod 8 is engaged with the driven gear 17 to drive the driving rod 9, so that the gear B14 is used for carrying out chain transmission, the rotation of the first rotary rod 7 and the third rotary rod 10 is further promoted, the synchronous rotation is carried out due to the arrangement of the heights of the plurality of rotary rods, the meshing rotation of the bevel gears 16 is carried out, the pinion 1503 on the transmission assembly 15 is driven by the meshing transmission between the pinion 1503 and the straight toothed bar 1506, the movement of the straight toothed bar 1506 is promoted, the two clamping plates 1505 are further carried out to move in opposite directions, the wires are clamped and fixed, the bolts 603 are inserted into the matched limiting holes 604 to be fixed, and the plurality of gears are prevented from rotating.

Example two

As shown in fig. 1-2, in the first embodiment, preferably, the left side wall of the transmission case 2 is provided with lifting assemblies 4 with the same number as the threading openings 3 to prevent the wires from being overlong, the lifting assemblies 4 include round-trip screws 401 arranged on the left side wall of the transmission case 2, one ends of five round-trip screws 401 are respectively arranged on the rod ends of the first rotating rod 7, the second rotating rod 8, the third rotating rod 10, the fourth rotating rod 11 and the fifth rotating rod 12, a sliding seat 402 is in threaded connection with the threaded surface of the round-trip screws 401, a supporting rod 403 is fixedly arranged at the bottom of the sliding seat 402, one end of the supporting rod 403, which is far away from the sliding seat 402, is fixedly provided with a through ring 404, the through ring 404 and the threading openings 3 are positioned on the same Y-axis extension line to ensure the wires to be on the same horizontal line, a rubber pad is sleeved on the inner ring surface of the through ring 404, and when the plurality of rotating rods rotate, the round-trip screws 401 are simultaneously driven to move, thereby the sliding seat 402 is further driven to move, the through ring 404 is further driven, and the wire is prevented from being overlong when the wires are fixed under the condition of the through ring 404.

Example III

As shown in fig. 1, this embodiment is basically consistent with the first embodiment, preferably, the top of the transmission case 2 is provided with a mounting assembly 5 mounted on the electric pole, the mounting assembly 5 includes a humanoid plate 501 fixedly mounted on the top of the transmission case 2, a fixing ring 502 is disposed at one end of the humanoid plate 501, which faces away from the transmission case 2, the fixing ring 502 is divided into two semi-annular portions, the two semi-annular portions are movably connected through a hinge, meanwhile, one ends of the two semi-annular portions, which face away from the hinge, are both provided with a fixing member 503, the fixing member 503 is a rectangular plate with a through hole, a bolt is disposed between the two fixing members 503, and a nut is screwed on the bolt, and the fixing ring 502 is divided into two semi-annular portions according to the use of the fixing ring 502, the two semi-annular portions are connected through the hinge, and are fixedly mounted with the electric pole through the use of the fixing member 503 in cooperation with the bolt, and the whole installation and disassembly are convenient.

Example IV

As shown in fig. 7, in the first embodiment, preferably, the rotating portion 6 further includes a motor housing 18 fixedly installed on the right side wall of the transmission case 2, and a battery box 19 is disposed at the bottom of the motor housing 18, a servo motor 21 is fixedly installed in the motor housing 18, an output end of the servo motor 21 is butt-mounted on a rod end of the second rotating rod 8, a storage battery 20 is disposed in the battery box 19, the storage battery 20 is electrically connected with the servo motor 21, four rectangular fixing rods 22 are disposed on the top of the transmission case 2, the four fixing rods 22 have a height difference, and the same solar panel 23 is fixedly installed on the rod ends of the four fixing rods 22, so that the solar panel 23 is inclined, by replacing the servo motor 21 with a turntable 601, the manual rotation is replaced by the mechanical movement, the working strength of a worker is reduced, and meanwhile, the solar panel 23 is matched with the electrical connection between the solar panel 23 and the storage battery 20, so that the servo motor 21 can ensure long-time movement and perform stable clamping and fixing effects on the electric wire.

The electrical components are all connected with an external main controller and 220V mains supply, and the main controller can be conventional known equipment for controlling a computer and the like.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A fixing device for electric wire installation, including carrying out fixed case (1) and the transmission case (2) of fixing at fixed case (1) top of many electric wires fixed, its characterized in that: the utility model discloses a transmission device, which is characterized in that the inside of a fixed box (1) is provided with at least five threading openings (3) which are through left and right, the left side wall of a transmission box (2) is provided with lifting components (4) which are consistent with the threading openings (3) in number, the right side wall of the transmission box (2) is provided with a rotating part (6), the top of the transmission box (2) is provided with a mounting component (5) which is arranged on an electric pole, the inside of the transmission box (2) is rotationally provided with a first rotating rod (7), a second rotating rod (8), a third rotating rod (10), a fourth rotating rod (11), a fifth rotating rod (12) and a driving rod (9), wherein gears A (13) are sleeved on the outer circular surfaces of the second rotating rod (8), the fourth rotating rod (11) and the fifth rotating rod (12) in the transmission box (2), the three gears A (13) are distributed in a triangular shape and are in transmission connection through a chain, driven gears (17) are arranged on a rod body of the driving rod (9), the driven gears (17) are meshed with the gears A (13) which are also distributed on the driving rod (9) and the driving rod (14) in a triangular shape, and transmission assemblies (15) with the same number as the threading openings (3) are arranged in the transmission case (2) to clamp and fix the electric wires;

the transmission assembly (15) comprises a transmission box (1501) fixed at the inner bottom of the transmission box (2), the transmission box (1501) is a box body with a hollow inside, each transmission box (1501) is respectively located vertically below each rod body, a rotating shaft (1502) is rotatably installed in the center of the inside of the transmission box (1501), a first rotating rod (7), a driving rod (9), a third rotating rod (10), a fourth rotating rod (11), a fifth rotating rod (12) and rod bodies of the five rotating shafts (1502) are all provided with bevel gears (16), meshing transmission is carried out between the two bevel gears (16) of the same group, a pinion (1503) is further arranged on the rod body of each rotating shaft (1502), the pinion (1503) meshing transmission is provided with two straight racks (1506), connecting rods (1504) extending into threading openings (3) below are respectively arranged at the bottoms of the two straight racks, and clamping plates (1505) are arranged at the rod ends of the connecting rods (1504) located in the threading openings (3) to clamp electric wires.

2. A fixing device for electric wire installation according to claim 1, characterized in that: the transmission box (1501) located below the straight rack (1506) is provided with a through hole (1507) communicated with the inside of the threading hole (3), sliding grooves (1509) are formed in the opposite inner walls of the through hole (1507), sliding seats (1508) are arranged at the bottoms of the straight rack (1506), the connecting rod (1504) is located below the sliding seats (1508), and sliding blocks extending into the sliding grooves (1509) are arranged on the side walls of the sliding seats (1508) corresponding to the sliding grooves (1509) to assist the straight rack (1506) to move.

3. A fixing device for electric wire installation according to claim 1, characterized in that: the lifting assembly (4) comprises a reciprocating screw rod (401) arranged on the left side wall of the transmission case (2), one ends of the five reciprocating screw rods (401) are respectively arranged at rod ends of a first rotating rod (7), a second rotating rod (8), a third rotating rod (10), a fourth rotating rod (11) and a fifth rotating rod (12), a sliding seat (402) is connected on a threaded surface of the reciprocating screw rod (401) in a threaded manner, a supporting rod (403) is fixedly arranged at the bottom of the sliding seat (402), and a through ring (404) is fixedly arranged at one end of the supporting rod (403) deviating from the sliding seat (402).

4. A fixing device for electric wire installation according to claim 3, characterized in that: the through ring (404) and the threading opening (3) are positioned on the same Y-axis extension line, and a rubber pad is sleeved on the inner ring surface of the through ring (404).

5. A fixing device for electric wire installation according to claim 1, characterized in that: the installation component (5) is including fixed mounting at people's type board (501) at transmission case (2) top, one end that deviates from transmission case (2) at people's type board (501) is provided with solid fixed ring (502), gu fixed ring (502) divide into two semi-annular portions, carry out swing joint through the hinge between two semi-annular portions, all be provided with rigid coupling spare (503) in the one end that two semi-annular portions deviate from the hinge simultaneously, rigid coupling spare (503) are the rectangular plate that has the through-hole, be provided with the bolt between two rigid coupling spare (503) to threaded connection has the nut on the bolt.

6. A fixing device for electric wire installation according to claim 1, characterized in that: the rotating part (6) comprises a rotary table (601) arranged at the rod end of the second rotary rod (8), a ring groove (602) is formed in the wall of the transmission case (2) corresponding to the rotary table (601), a plurality of limiting holes (604) are formed in the groove of the ring groove (602), a through hole is eccentrically formed in the disc surface of the rotary table (601), and a bolt (603) is arranged in the through hole to be matched with the limiting holes (604) for use so as to play a role in stabilizing the rotary table (601).

7. A fixing device for electric wire installation according to claim 6, characterized in that: the rotating part (6) further comprises a motor bin (18) fixedly arranged on the right side wall of the transmission case (2), a battery box (19) is arranged at the bottom of the motor bin (18), a servo motor (21) is fixedly arranged in the motor bin (18), the output end of the servo motor (21) is butt-jointed and mounted on the rod end of the second rotating rod (8), a storage battery (20) is arranged in the battery box (19), and the storage battery (20) is electrically connected with the servo motor (21).

8. A fixing device for electric wire installation according to claim 7, characterized in that: four rectangular fixing rods (22) are arranged at the top of the transmission case (2), and the same solar panel (23) is fixedly arranged at the rod ends of the four fixing rods (22).

9. A fixing device for electric wire installation according to claim 5, characterized in that: a plurality of protrusions are arranged on the clamping surface of the fixing ring (502), so that friction force between the fixing ring (502) and the electric pole is increased.