A portable lighting device for power line maintenance

By designing a portable lighting device that combines a main body, a main lamp, and auxiliary lamps, the problems of fixed lighting range and poor coordination of existing devices have been solved, achieving flexible and multi-angle supplementary lighting effects and improving the efficiency and accuracy of power line maintenance.

CN224327028UActive Publication Date: 2026-06-05HENAN XINYUESHENG ELECTRIC CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HENAN XINYUESHENG ELECTRIC CO LTD
Filing Date
2025-08-23
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing portable lighting devices for power line maintenance have a relatively fixed illumination range, and the lighting coordination between the searchlight and the light panel is poor, resulting in severe ghosting of the lines, making it difficult to clearly distinguish individual circuits and resulting in poor lighting effects.

Method used

A portable lighting device was designed, comprising a main body, a main light, an auxiliary light, and a rotating bracket. By using the rotating bracket and the auxiliary light in combination, the position and angle of the auxiliary light can be flexibly adjusted, reducing the shadow effect of the main light and providing multi-angle supplementary lighting.

Benefits of technology

It reduces the impact of shadows during power line maintenance, improves the flexibility and clarity of lighting, and makes it easier for staff to quickly and accurately identify power line faults.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a portable lighting device for power line overhauling relates to power overhauling lighting technical field, including main part, and the main part front end is provided with main light, and the main part tail end rotatoryly is equipped with the installation sleeve of installation band and magnet, and the main part peripheral side is installed with the active switch and auxiliary light switch, and the active switch controls the opening and closing of main light, the main part peripheral side still is provided with containing groove, and the containing groove is rotatoryly connected with rotary support in damping, and the movable end rotatoryly connected with auxiliary light of rotary support, and auxiliary light is electrically connected with auxiliary light switch, the utility model discloses the setting of rotary support and auxiliary light, and the cooperation of multiple auxiliary lights can weaken the shadow that forms to main lamp cover set, thereby reducing the probability that staff is influenced by line shadow and distinguishes unclearly, and simultaneously still can utilize auxiliary light and carry out the irradiation of multiple places, multiple angles to light supplement, thereby can flexibly carry out the irradiation of multiple positions of power line, and be more favorable to the overhauling of staff.
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Description

Technical Field

[0001] This utility model relates to the field of power maintenance lighting technology, and in particular to a portable lighting device for power line maintenance. Background Technology

[0002] When a power transmission line fails, power maintenance personnel need to carry out timely repairs day and night to restore power supply as soon as possible, so that people's normal electricity use and factory production can be restored, and economic losses can be reduced. When carrying out power maintenance work at night, the use of lighting equipment is essential.

[0003] A search revealed a patent document with publication number "CN110375217B" that discloses a portable lighting device for power line maintenance. The device includes a searchlight, housing, battery cover, battery, fixing buckle, fixing strap, magnet, connecting device, rotating housing, lampshade one, lamp plate one, lamp plate two, lampshade two, lamp plate three, lampshade three, switch, slot, spring, fixing cover, pin, locking element, and slot. When maintaining power lines at night, the searchlight is activated by the switch, allowing maintenance personnel to quickly identify power line faults. The magnet allows the device to be attached to an iron plate for illumination, facilitating maintenance of power line cabinets. The fixing buckle and fixing strap allow the device to be fixed to a fixed object for illumination. The lamp plates one, two, and three can be unfolded for illumination as needed.

[0004] Based on the above search and combined with existing technology, it was found that the existing portable lighting devices for power line maintenance have a relatively fixed lighting range when in use, and the lighting coordination between the searchlight and the lighting panels 1, 2, and 3 is poor. Since power lines are also laid with multiple cables, lighting in one direction can easily cause ghosting of the lines, making it difficult for workers to clearly distinguish individual circuits, resulting in poor lighting effects. Therefore, a portable lighting device for power line maintenance is needed. Utility Model Content

[0005] The purpose of this application is to provide a portable lighting device for power line maintenance, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a portable lighting device for power line maintenance, comprising a main body, a main lamp provided at the front end of the main body, a mounting sleeve with a mounting strap and a magnet rotatably fitted at the rear end of the main body, and an active switch and an auxiliary lamp switch installed around the periphery of the main body, wherein the active switch controls the opening and closing of the main lamp;

[0007] A receiving groove is also provided on the periphery of the main body. A rotating bracket is rotatably connected in the receiving groove. An auxiliary lamp is rotatably connected to the movable end of the rotating bracket. The auxiliary lamp is electrically connected to the auxiliary lamp switch.

[0008] The rotating bracket includes a first bracket, a second bracket, and a mounting bracket. The first bracket is damped and rotatably connected to the inner wall of the receiving groove. The second bracket is damped and rotatably connected to the end of the first bracket away from the inner wall of the receiving groove. The mounting bracket is damped and rotatably connected to the end of the second bracket away from the first bracket. The auxiliary lamp is damped and rotatably connected to the mounting bracket.

[0009] The first bracket, the second bracket, and the auxiliary lamp rotate in the same direction, and the rotation axis of the mounting bracket is perpendicular to the rotation axis of the auxiliary lamp.

[0010] Preferably, a first shaft and a second shaft are fixed at both ends of the first bracket, and the first shaft is rotatably embedded in the receiving groove;

[0011] The second bracket has a connecting frame at the end near the first bracket. The connecting frame has a first hole for the second shaft to rotate through. The second bracket has an integrally formed locking post that can be rotatably inserted into the mounting frame at the end near the mounting frame.

[0012] The mounting bracket has a second hole, and lamp shafts that are rotatably inserted into the second hole are fixed at both ends of the auxiliary lamp.

[0013] Damping components are fixed at the connection points between the mounting bracket and the lamp shaft, the second bracket and the mounting bracket, the second bracket and the first bracket, and the first bracket and the receiving groove.

[0014] Preferably, the mounting bracket includes two symmetrically arranged semi-shells fixed by bolts, a second hole is opened at the upper end of the semi-shell, and a semi-clamping ring is formed at the lower end of the semi-shell that is held on the clamping post.

[0015] Limiting components are provided on one side of the mounting post, the inner wall of the semi-shell, the upper end of the semi-shell, and the side wall of the auxiliary lamp. The limiting components restrict the rotation angle of the mounting bracket relative to the second bracket to less than 360°. The limiting components are also used to restrict the rotation angle of the auxiliary lamp relative to the mounting bracket to less than 240°.

[0016] Preferably, the limiting component includes a second limiting plate and a first limiting plate. The second limiting plate is fixed inside the semi-shell and is located on one side of the semi-clamp. The first limiting plate is fixed on the clamping post, and the movement paths of the first limiting plate and the second limiting plate coincide.

[0017] Preferably, the limiting component further includes a third limiting plate and a fourth limiting plate. The third limiting plate is fixed to the side wall of the auxiliary lamp, and the fourth limiting plate is fixed to the upper part of the semi-shell. The fourth limiting plate has two plates forming an included angle of less than 180° and not less than 60°. The movement paths of the fourth limiting plate and the third limiting plate coincide.

[0018] Preferably, a groove is provided on the inner side of the upper part of the semi-shell, coaxial with the second hole, and the fourth limiting plate is fixedly embedded in the groove. The third limiting plate is movably embedded in the groove and located between the larger included angle of the two fourth limiting plates.

[0019] The damping component includes a third damping ring, a first damping ring, a damping half ring, and a second damping ring. The damping half ring is fixedly embedded in the groove and located between the smaller included angle of the two fourth limiting plates. The damping half ring has a semi-circular ring structure, and the surface of the damping half ring is interference-fitted with the auxiliary lamp sidewall and the lamp shaft circumference.

[0020] The first damping ring is fixedly embedded at the end of the second bracket near the half-shell, and the surface of the first damping ring is interference-fitted with the lower end face of the half-shell. The second damping ring is fixedly embedded on the inner side wall of the receiving groove, and the surface of the second damping ring is interference-fitted with the side wall of the first bracket. The third damping ring is fixedly embedded on the inner side of the connecting frame, and the surface of the third damping ring is interference-fitted with both the circumferential side of the second shaft and the side wall of the first bracket.

[0021] Preferably, the outer side wall of the main body is provided with a limiting collar, and when the limiting collar is located at the front end of the receiving groove, the inner wall of the limiting collar abuts against the mounting bracket and the side wall of the auxiliary lamp.

[0022] In summary, the technical effects and advantages of this utility model are as follows:

[0023] 1. In this utility model, by setting up a rotating bracket and auxiliary lights, workers can pull the auxiliary lights to rotate and unfold the first and second brackets, thereby pulling the auxiliary lights to a predetermined position. The angle of the auxiliary lights can be adjusted by rotating the auxiliary lights and the mounting bracket. With the coordinated use of multiple auxiliary lights, the shadows formed by the main lights can be reduced, thereby reducing the probability of workers not being able to distinguish clearly due to the shadows of the lines. At the same time, the auxiliary lights can be used to illuminate multiple locations and angles, thereby flexibly illuminating multiple positions of the power lines, which is more conducive to the maintenance work of workers.

[0024] 2. In this utility model, the rotation angle of the mounting bracket can be limited by the cooperation of the second limiting plate and the first limiting plate, so that after rotating to a certain angle, it can only rotate in the opposite direction, thereby avoiding the twisting of the power cord connected to the auxiliary light. Similarly, when the third limiting plate and the fourth limiting plate abut, the auxiliary light can only rotate in the opposite direction, thereby further avoiding the large bending angle of the power cord connected to the auxiliary light. While satisfying the need for flexible adjustment of the auxiliary light cover angle, it can also ensure the safety of the internal circuitry and avoid damage to the circuitry caused by over-twisting.

[0025] 3. In this utility model, by setting the third damping ring, the first damping ring, the damping half ring and the second damping ring, the first bracket, the second bracket, the mounting bracket and the auxiliary lamp can automatically maintain a stable posture after rotation, reducing the probability of accidental movement after adjustment, thereby ensuring the stability of the illumination angle of the auxiliary lamp before and after adjustment, and achieving a stable supplementary lighting effect. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure in this embodiment;

[0028] Figure 2 This is a schematic diagram of the rotating support structure in this embodiment;

[0029] Figure 3 This is a schematic diagram of the second bracket, mounting bracket, and auxiliary lamp structure in this embodiment;

[0030] Figure 4 This is a partial view of the second bracket, the mounting bracket, and the auxiliary lamp in this embodiment.

[0031] In the diagram: 1. Main body; 11. Main lamp; 12. Receiving slot; 13. Active switch; 14. Auxiliary lamp switch; 2. Mounting sleeve; 3. Rotating bracket; 31. First bracket; 311. First shaft; 312. Second shaft; 32. Second bracket; 321. Connecting frame; 3211. First hole; 322. Third damping ring; 323. Locking post; 3231. First limiting plate; 33. Mounting bracket; 331. Half-shell; 3311. Second hole; 3312. Embedded groove; 332. Half locking ring; 333. Second limiting plate; 4. Auxiliary lamp; 41. Lamp shaft; 42. Third limiting plate; 5. First damping ring; 6. Damping half ring; 7. Second damping ring; 8. Limiting collar; 9. Fourth limiting plate. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example: Reference Figures 1-4 The portable lighting device for power line maintenance shown includes a main body 1, a main lamp 11 is provided at the front end of the main body 1, and a mounting sleeve 2 with mounting straps and magnets is rotatably sleeved at the rear end of the main body 1. An active switch 13 and an auxiliary lamp switch 14 are installed around the main body 1. The active switch 13 controls the opening and closing of the main lamp 11.

[0034] The main body 1 is also provided with a receiving groove 12 on the side. A rotating bracket 3 is rotatably connected in the receiving groove 12. An auxiliary lamp 4 is rotatably connected to the movable end of the rotating bracket 3. The auxiliary lamp 4 is electrically connected to the auxiliary lamp switch 14.

[0035] The rotating bracket 3 includes a first bracket 31, a second bracket 32, and a mounting bracket 33. The first bracket 31 is damped and rotatably connected to the inner wall of the receiving groove 12. The second bracket 32 ​​is damped and rotatably connected to the end of the first bracket 31 away from the inner wall of the receiving groove 12. The mounting bracket 33 is damped and rotatably connected to the end of the second bracket 32 ​​away from the first bracket 31. The auxiliary lamp 4 is damped and rotatably connected to the mounting bracket 33.

[0036] Among them, the first bracket 31, the second bracket 32, and the auxiliary lamp 4 rotate in the same direction, and the rotation axis of the mounting bracket 33 is perpendicular to the rotation axis of the auxiliary lamp 4.

[0037] Based on the above structure, during use, the staff can pull the auxiliary light 4 to rotate and unfold the first bracket 31 and the second bracket 32, thereby pulling the auxiliary light 4 to the predetermined position. The staff can also adjust the coverage angle of the auxiliary light 4 by rotating the auxiliary light 4 and the mounting bracket 33. Through the coordinated use of multiple auxiliary lights 4, the shadow formed by the main light 11 can be weakened, thereby reducing the probability that the staff will not be able to distinguish clearly due to the shadow of the line. At the same time, the auxiliary light 4 can also be used to illuminate multiple locations and multiple angles, thereby flexibly illuminating multiple positions of the power line, which is more conducive to the staff's maintenance.

[0038] Furthermore, a first shaft 311 and a second shaft 312 are fixed at both ends of the first bracket 31, and the first shaft 311 is rotatably embedded in the receiving groove 12;

[0039] A connecting frame 321 is formed at one end of the second bracket 32 ​​near the first bracket 31. A first hole 3211 is provided on the connecting frame 321 for the second shaft 312 to rotate through. A locking post 323 is integrally formed at one end of the second bracket 32 ​​near the mounting frame 33 and is rotatably inserted into the mounting frame 33.

[0040] The mounting bracket 33 has a second hole 3311, and both ends of the auxiliary lamp 4 are fixed with lamp shafts 41 that are rotatably inserted into the second hole 3311.

[0041] Damping components are fixed at the connection points of the mounting bracket 33 and the lamp shaft 41, the second bracket 32 ​​and the mounting bracket 33, the second bracket 32 ​​and the first bracket 31, and the first bracket 31 and the receiving groove 12.

[0042] Furthermore, the mounting bracket 33 includes two symmetrically arranged semi-shells 331 fixed by bolts, a second hole 3311 is opened at the upper end of the semi-shell 331, and a semi-clamping ring 332 is formed at the lower end of the semi-shell 331 that is attached to the clamping post 323.

[0043] Limiting components are provided on one side of the locking post 323, the inner wall of the semi-shell 331, the upper end of the semi-shell 331, and the side wall of the auxiliary lamp 4. The limiting components restrict the rotation angle of the mounting bracket 33 relative to the second bracket 32 ​​to less than 360°. The limiting components are also used to restrict the rotation angle of the auxiliary lamp 4 relative to the mounting bracket 33 to less than 240°.

[0044] Furthermore, the limiting component includes a second limiting plate 333 and a first limiting plate 3231. The second limiting plate 333 is fixed inside the semi-shell 331 and is located on one side of the semi-clamp 332. The first limiting plate 3231 is fixed on the clamping post 323, and the movement paths of the first limiting plate 3231 and the second limiting plate 333 coincide.

[0045] Furthermore, the limiting components also include a third limiting plate 42 and a fourth limiting plate 9. The third limiting plate 42 is fixed to the side wall of the auxiliary lamp 4, and the fourth limiting plate 9 is fixed to the upper part of the semi-shell 331. The fourth limiting plate 9 is provided with two plates forming an included angle of less than 180° and not less than 60°. The movement paths of the fourth limiting plate 9 and the third limiting plate 42 coincide.

[0046] When the user pulls the auxiliary light 4, it can drive the mounting bracket 33 and the second bracket 32 ​​to rotate along the second axis 312, and at the same time drive the first bracket 31 to rotate along the first axis 311, thereby unfolding the first bracket 31 and the second bracket 32. At the same time, the user can also rotate the auxiliary light 4 or the mounting bracket 33, thereby causing the auxiliary light 4 to rotate along the lamp axis 41 and the mounting bracket 33 to rotate along the locking post 323, so as to adjust the orientation and angle of the auxiliary light 4. This allows for flexible adjustment of the position and illumination angle of the auxiliary light 4, making it flexible and convenient to use.

[0047] Meanwhile, the rotation angle of the mounting bracket 33 can be limited by the cooperation of the second limiting plate 333 and the first limiting plate 3231, so that after rotating to a certain angle (the second limiting plate 333 abuts against the first limiting plate 3231), it can only rotate in the opposite direction, thereby avoiding the twisting of the power cord connected to the auxiliary lamp 4. Similarly, when the third limiting plate 42 and the fourth limiting plate 9 abut against each other, the auxiliary lamp 4 can only rotate in the opposite direction, thereby further avoiding the large bending angle of the power cord connected to the auxiliary lamp 4. While satisfying the need for flexible adjustment of the auxiliary lamp 4 cover angle, it can also ensure the safety of the internal circuitry and avoid damage to the circuitry caused by over-twisting.

[0048] Furthermore, a groove 3312 is coaxially formed on the upper inner side of the semi-shell 331 with the second hole 3311. The fourth limiting plate 9 is fixedly embedded in the groove 3312, and the third limiting plate 42 is movably embedded in the groove 3312 and located between the larger included angle of the two fourth limiting plates 9.

[0049] The damping component includes a third damping ring 322, a first damping ring 5, a damping half ring 6, and a second damping ring 7. The damping half ring 6 is fixedly embedded in the groove 3312 and located between the smaller included angles of the two fourth limiting plates 9. The damping half ring 6 has a semi-circular ring structure, and the surface of the damping half ring 6 is interference-fitted with the side wall of the auxiliary lamp 4 and the circumference of the lamp shaft 41.

[0050] The first damping ring 5 is fixedly embedded in the end of the second bracket 32 ​​near the half shell 331. The surface of the first damping ring 5 is interference-fitted with the lower end face of the half shell 331. The second damping ring 7 is fixedly embedded in the inner side wall of the receiving groove 12. The surface of the second damping ring 7 is interference-fitted with the side wall of the first bracket 31. The third damping ring 322 is fixedly embedded in the inner side of the connecting frame 321. The surface of the third damping ring 322 is interference-fitted with the periphery of the second shaft 312 and the side wall of the first bracket 31.

[0051] By setting the third damping ring 322, the first damping ring 5, the damping half ring 6, and the second damping ring 7, the first bracket 31, the second bracket 32, the mounting bracket 33, and the auxiliary lamp 4 can automatically maintain a stable posture after rotation, reducing the probability of accidental movement after adjustment, thereby ensuring the stability of the illumination angle of the auxiliary lamp 4 before and after adjustment, and achieving a stable supplementary lighting (illumination) effect.

[0052] Furthermore, a limiting collar 8 is provided on the outer wall of the main body 1 with damping sliding sleeve. When the limiting collar 8 is located at the front end of the receiving groove 12, the inner wall of the limiting collar 8 abuts against the mounting bracket 33 and the side wall of the auxiliary lamp 4.

[0053] By setting the limiting collar 8, the retracted mounting bracket 33 and the auxiliary lamp 4 can be protected and limited to prevent accidental unfolding. At the same time, it can prevent damage to the auxiliary lamp 4 when an external object accidentally hits it, thus improving the safety of the portable lighting device for power line maintenance.

[0054] It should be noted that the third damping ring 322, the first damping ring 5, the damping half ring 6, and the second damping ring 7 are all damping rings commonly used in the prior art and applicable to this embodiment, such as rubber rings made of rubber material, which can provide greater surface friction to stabilize the posture of the rotated component.

[0055] The working principle of this utility model is as follows: In daily use, the operator can hold the main body 1 by hand or fix it to an object using the straps and magnets on the mounting sleeve 2, achieving a portable placement and carrying effect. When in use, the main light 11 needs to be turned on to provide the main light source. When there are many lines and there is ghosting or insufficient light source range, the operator can pull the auxiliary light 4 to rotate and unfold the first bracket 31 and the second bracket 32, thereby pulling the auxiliary light 4 to the predetermined position. The angle of the auxiliary light 4 can be adjusted by rotating the auxiliary light 4 and the mounting bracket 33. Through the coordinated use of multiple auxiliary lights 4, the shadow formed by the main light 11 can be weakened, thereby reducing the probability of the operator not being able to distinguish clearly due to the shadow of the line. At the same time, the auxiliary light 4 can also be used to illuminate multiple locations and multiple angles, thereby flexibly illuminating multiple positions of the power line, which is more conducive to the operator's maintenance.

[0056] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable lighting device for power line maintenance, comprising a main body (1), wherein a main lamp (11) is provided at the front end of the main body (1), and a mounting sleeve (2) for mounting straps and magnets is rotatably fitted at the rear end of the main body (1), wherein an active switch (13) and a secondary lamp switch (14) are installed around the main body (1), the active switch (13) controlling the opening and closing of the main lamp (11), characterized in that: The main body (1) is also provided with a receiving groove (12) on its periphery. A rotating bracket (3) is rotatably connected in the receiving groove (12). An auxiliary lamp (4) is rotatably connected to the movable end of the rotating bracket (3). The auxiliary lamp (4) is electrically connected to the auxiliary lamp switch (14). The rotating bracket (3) includes a first bracket (31), a second bracket (32), and a mounting bracket (33). The first bracket (31) is damped and rotatably connected to the inner wall of the receiving groove (12). The second bracket (32) is damped and rotatably connected to the end of the first bracket (31) away from the inner wall of the receiving groove (12). The mounting bracket (33) is damped and rotatably connected to the end of the second bracket (32) away from the first bracket (31). The auxiliary lamp (4) is damped and rotatably connected to the mounting bracket (33). The first bracket (31), the second bracket (32), and the auxiliary lamp (4) rotate in the same direction, and the rotation axis of the mounting bracket (33) is perpendicular to the rotation axis of the auxiliary lamp (4).

2. The portable lighting device for power line maintenance according to claim 1, characterized in that: The first bracket (31) has a first shaft (311) and a second shaft (312) fixed at both ends, and the first shaft (311) is rotatably embedded in the receiving groove (12); The second bracket (32) has a connecting frame (321) formed at one end near the first bracket (31). The connecting frame (321) has a first hole (3211) through which the second shaft (312) rotates. The second bracket (32) has a locking pin (323) integrally formed at one end near the mounting frame (33) that is rotatably inserted into the mounting frame (33). The mounting bracket (33) has a second hole (3311), and both ends of the auxiliary lamp (4) are fixed with lamp shafts (41) that are rotatably inserted into the second hole (3311); Damping components are fixed at the connection points of the mounting bracket (33) and the lamp shaft (41), the connection points of the second bracket (32) and the mounting bracket (33), the connection points of the second bracket (32) and the first bracket (31), and the connection points of the first bracket (31) and the receiving groove (12).

3. A portable lighting device for power line maintenance according to claim 2, characterized in that: The mounting bracket (33) includes two symmetrically arranged semi-shells (331) fixed by bolts. The second hole (3311) is opened at the upper end of the semi-shell (331), and a semi-clamping ring (332) is formed at the lower end of the semi-shell (331) and is attached to the clamping post (323). Limiting components are provided on one side of the locking post (323), the inner wall of the half shell (331), the upper end of the half shell (331), and the side wall of the auxiliary lamp (4). The limiting components restrict the rotation angle of the mounting bracket (33) relative to the second bracket (32) to be less than 360°. The limiting components are also used to restrict the rotation angle of the auxiliary lamp (4) relative to the mounting bracket (33) to be less than 240°.

4. A portable lighting device for power line maintenance according to claim 3, characterized in that: The limiting component includes a second limiting plate (333) and a first limiting plate (3231). The second limiting plate (333) is fixed inside the semi-shell (331) and is located on one side of the semi-clamp (332). The first limiting plate (3231) is fixed on the clamping post (323). The movement paths of the first limiting plate (3231) and the second limiting plate (333) coincide.

5. A portable lighting device for power line maintenance according to claim 4, characterized in that: The limiting component also includes a third limiting plate (42) and a fourth limiting plate (9). The third limiting plate (42) is fixed to the side wall of the auxiliary lamp (4), and the fourth limiting plate (9) is fixed to the upper part of the half shell (331). The fourth limiting plate (9) has two parts and forms an included angle of less than 180° and not less than 60°. The movement paths of the fourth limiting plate (9) and the third limiting plate (42) coincide.

6. A portable lighting device for power line maintenance according to claim 5, characterized in that: The upper inner side of the semi-shell (331) is coaxially provided with a groove (3312) and the second hole (3311). The fourth limiting plate (9) is fixedly embedded in the groove (3312). The third limiting plate (42) is movably embedded in the groove (3312) and located between the larger included angle of the two fourth limiting plates (9). The damping component includes a third damping ring (322), a first damping ring (5), a damping half ring (6), and a second damping ring (7). The damping half ring (6) is fixedly embedded in the groove (3312) and located between the smaller included angles of the two fourth limiting plates (9). The damping half ring (6) has a semi-circular ring structure. The surface of the damping half ring (6) is interference-fitted with the side wall of the auxiliary lamp (4) and the circumference of the lamp shaft (41). The first damping ring (5) is fixedly embedded in the end of the second bracket (32) near the half shell (331). The surface of the first damping ring (5) is interference-fitted with the lower end face of the half shell (331). The second damping ring (7) is fixedly embedded in the inner side wall of the receiving groove (12). The surface of the second damping ring (7) is interference-fitted with the side wall of the first bracket (31). The third damping ring (322) is fixedly embedded in the inner side of the connecting frame (321). The surface of the third damping ring (322) is interference-fitted with the periphery of the second shaft (312) and the side wall of the first bracket (31).

7. A portable lighting device for power line maintenance according to any one of claims 1-6, characterized in that: The outer wall of the main body (1) is fitted with a limiting collar (8) with damping sliding sleeve. When the limiting collar (8) is located at the front end of the receiving groove (12), the inner wall of the limiting collar (8) abuts against the mounting bracket (33) and the side wall of the auxiliary lamp (4).