A low-voltage line device distribution network engineering system maintenance device

Abstract

This invention discloses a maintenance device for a low-voltage power distribution network system, belonging to the field of maintenance equipment technology. It includes a height fine-tuning mechanism, a bolt tightening mechanism, a rolling guide mechanism, and a limiting mechanism. During actual operation, the height fine-tuning mechanism allows for precise alignment, facilitating the accurate removal of bolts and angle steel. The bolt tightening mechanism automatically tightens bolts and is adaptable to slight angle tilts during tightening. The rolling guide mechanism facilitates lifting angle steel to a suitable position on the utility pole or removing angle steel from the pole for complete replacement, improving maintenance efficiency. The limiting mechanism limits the angle steel and bolts, facilitating disassembly or installation / replacement.

Description

Technical Field

[0001] This invention relates to the field of low-voltage power distribution equipment technology, specifically a maintenance device and method for a low-voltage power distribution network system. Background Technology

[0002] In low-voltage power distribution network engineering systems, the erection of low-voltage lines generally requires the use of poles and insulators to tighten and support the lines. Insulators play a crucial role in overhead transmission lines, especially in supporting the conductors and preventing current from returning to the ground. These two functions must be guaranteed at all times during line erection and operation. Insulators should not fail due to flashover breakdown caused by changes in environmental and electrical load conditions; otherwise, the insulators will lose their function, compromising the service life and operational life of the entire line. Simultaneously, the insulation of the line conductors depends on the insulators. The smooth surface of the insulators reduces the capacitive reactance between the wires, thus minimizing current loss. However, due to manufacturing defects or external factors, such as excessive dirt on the insulator surface, lightning strikes, freezing, foreign object impacts, or cracks, the insulation performance of the insulators will continuously deteriorate.

[0003] Furthermore, even normally operating and qualified insulators can experience overheating issues during operation, including polarization effect heating, internal penetrating leakage current heating, and surface creepage leakage current heating. Due to manufacturing processes and precision limitations, microcracks and hygroscopic pores can easily form within the ceramic during use, potentially leading to uneven internal stress. Localized stress concentration exacerbates microcracks, allowing moisture to penetrate the ceramic body through cracks and through-pores in the vapor phase. Hygroscopic pores provide a habitat for water molecules. The water undergoes a stress-induced chemical reaction with the glassy phase, inducing the slow propagation of cracks. Under power frequency voltage conditions, water molecules rub against each other during polarization, and the heat generated in areas of intense molecular motion causes significant localized temperature rises in the insulator. In summary, during long-term operation, the combined effects of mechanical, thermal, electrical, and environmental factors inevitably cause various physical and chemical changes in the ceramic insulator, resulting in a gradual decline in electrical performance and mechanical strength with increasing operating time. Heating, discharging, and luminescence will appear simultaneously with this performance degradation.

[0004] Therefore, insulators in low-voltage power distribution networks require regular replacement, repair, or maintenance. However, during the cable installation of low-voltage power distribution networks, such as... Figure 7As shown, the current insulator 2 is generally fixed to a mounting frame. The mounting frame is made of two angle steels (angle steel 1 4 and angle steel 2 5), which are connected together by bolts consisting of multiple screws 3 and nuts 6. The two angle steels (angle steel 1 4 and angle steel 2 5) are passed through a pole such as a utility pole 1, and the angle steels are fixed to the utility pole after being tightened with multiple bolts. The insulator 2 is then fixed to the angle steels. However, when repairing or periodically replacing the insulator, a person needs to climb the utility pole 1 and carry the heavy insulator, or even the angle steel, to replace it. Furthermore, there are obstacles from the original angle steel. Therefore, this replacement method is not only inefficient but also has a high risk factor, affecting the effectiveness and safety of replacement and repair.

[0005] Therefore, it is necessary to provide a maintenance device and method for low-voltage line equipment distribution network engineering systems to solve the above problems. Summary of the Invention

[0006] To achieve the above objectives, the present invention provides the following technical solution: a maintenance device for a low-voltage line equipment distribution network engineering system, characterized in that it comprises:

[0007] The mounting base is installed at the output end of the lifting platform or lifting drive equipment.

[0008] Two height fine-tuning mechanisms are provided, one at each end of the mounting base.

[0009] A lifting horizontal rail is horizontally connected to the output ends of the two height fine-tuning mechanisms so that the height of the lifting seat can be finely adjusted by the height fine-tuning mechanisms.

[0010] A bolt tightening mechanism, which is horizontally slidably connected to the lifting horizontal rail, is used to tighten the connecting bolts between angle steel one and angle steel two for installing insulators.

[0011] There are two horizontal extension rails, and each horizontal extension rail is connected to the output end of its respective height fine-tuning mechanism. The horizontal extension rails, the lifting horizontal rail base, and the vertical direction are arranged in pairs orthogonal to each other.

[0012] A telescopic mechanism, which is slidably disposed on the horizontal extension rail;

[0013] A rolling guide mechanism is provided at the output end of the telescopic mechanism. Two rolling guide mechanisms are arranged opposite to each other, and the distance between the two rolling guide mechanisms is adjustable by the telescopic mechanism.

[0014] A limiting mechanism is provided, wherein the limiting mechanism is adjustablely and lockably mounted on the telescopic mechanism, and the limiting mechanism is located between the rolling guide mechanism and the horizontal extension rail;

[0015] During maintenance or replacement, the two limiting mechanisms are respectively positioned between the two bolts in the middle of the connecting angle steel one and angle steel two. The two rolling guide mechanisms abut against the utility pole from both sides so that the rolling guide mechanisms can perform rolling guidance. The output end of the lifting platform or lifting drive equipment drives the mounting base to rise to the required installation position. The bolt tightening mechanism automatically performs the bolt tightening operation.

[0016] Furthermore, as a preferred embodiment, it also includes a visual guidance mechanism, which includes a high-definition camera, an image processing device, and a controller. The high-definition camera is mounted on a mounting base and connected to the image processing device. The controller is connected to the image processing device and the bolt tightening mechanism. The visual guidance mechanism is used to provide feedback control for the tightening of the bolt tightening mechanism.

[0017] Furthermore, preferably, the height fine-tuning mechanism includes:

[0018] A height adjustment cylinder is mounted on the mounting base;

[0019] V-shaped guide seat, the V-shaped guide seat is vertically fixedly installed on the upper end face of the cylinder body of the height adjustment cylinder, the horizontal cross-section of the V-shaped guide seat is a V-shaped structure, and the V-shaped guide seat is provided with a vertical guide groove;

[0020] A vertical lifting seat is provided, which is a structure that matches the V-shaped guide seat. The vertical lifting seat is provided with a slide rail that slides and engages with the vertical guide groove. The vertical lifting seat is fixed on the piston rod of the height adjustment cylinder, and the lifting horizontal rail seat is fixedly installed on the vertical lifting seat.

[0021] Furthermore, preferably, the bolt tightening mechanism includes:

[0022] An electric slide rail is fixedly installed on the lifting horizontal rail base;

[0023] An electric slider that engages with an electric slide rail to slide along the electric slide rail;

[0024] A bolt tightening assembly is mounted on the electric slider.

[0025] Furthermore, preferably, the bolt tightening assembly includes:

[0026] A tightening motor is fixedly mounted on a connecting seat, and the connecting seat is fixedly mounted on the electric slider;

[0027] A hinged rotating ball is housed in a rotating cavity within the connecting seat, allowing for slight rotation, and is fixedly connected to the output shaft of the tightening motor.

[0028] An electric telescopic rod is provided, one end of which is fixedly connected to the hinged rotating ball, and the other end of which is provided with a tightening head assembly. The tightening head assembly is driven by the electric telescopic rod to adjust the distance between the tightening end of the tightening head assembly and the lifting horizontal rail seat. The tightening motor drives the tightening head assembly to rotate, and the angle of the tightening end of the tightening head assembly can be slightly adjusted by the hinged rotating ball.

[0029] Furthermore, as a preferred embodiment, the tightening head assembly includes a limiting head and a tightening bit, the output end of the electric telescopic rod is connected to a connector, the end of the connector is fixedly provided with a limiting head, and the end of the limiting head is replaceably provided with the tightening bit.

[0030] Furthermore, as a preferred embodiment, the rolling guide mechanism includes:

[0031] An arc-shaped spring steel frame is fixedly connected to the telescopic mechanism;

[0032] The arc-shaped spring steel frame is symmetrically provided with connecting protrusions on its inner arc shape;

[0033] A stop cylinder, the cylinder body of which is fixedly mounted on the connecting protrusion, and the output end of which is connected to a wheel seat via an elastic element;

[0034] The abutting rollers are two rollers arranged vertically and are rotatably mounted on the wheel seat. The abutting rollers abut against the utility pole and can roll up and down along the utility pole.

[0035] Furthermore, as a preferred embodiment, an arc-shaped elastic reinforcing plate is also provided on the lower side of the arc-shaped spring steel frame. The arc-shaped elastic reinforcing plate is made of steel sheet made of spring steel, and the length of the arc-shaped elastic reinforcing plate is less than three-quarters of the length of the arc-shaped spring steel frame.

[0036] Furthermore, preferably, the telescopic mechanism includes:

[0037] A position adjustment slider, which is slidably fitted onto the horizontal extension rail;

[0038] A telescopic cylinder, wherein the telescopic cylinder is fixedly mounted on the position adjusting slider by means of a cylinder seat;

[0039] A telescopic cylinder has a blind hole in its center. The end of the telescopic cylinder without the blind hole is fixedly connected to the output end of the telescopic cylinder. A telescopic rod is telescopically fitted inside the blind hole of the telescopic cylinder. A strong spring is provided between the end of the telescopic rod and the bottom wall of the blind hole of the telescopic cylinder.

[0040] The telescopic rod has the arc-shaped spring steel frame fixedly installed at the end of the telescopic rod away from the telescopic cylinder.

[0041] Furthermore, as a preferred embodiment, the limiting mechanism includes:

[0042] An adjusting sleeve is slidably fitted onto the telescopic rod, and a locking bolt is provided on the adjusting sleeve so as to lock the adjusting sleeve onto the telescopic rod.

[0043] A limiting plate is vertically extended and fixedly installed on the adjusting sleeve. During maintenance or replacement, the limiting plate can abut against the two bolts located between the middle parts of the connecting angle steel one and angle steel two, and can make the abutting roller abut against the outer circumferential surface of the utility pole.

[0044] Compared with the prior art, the present invention provides a maintenance device for a low-voltage line equipment distribution network engineering system, which has the following features:

[0045] Beneficial effects:

[0046] In this invention, a height fine-tuning mechanism is provided. During actual operation, the output end of the lifting platform or lifting drive equipment raises the entire device to a suitable installation position, and then the height fine-tuning mechanism performs height fine-tuning to ensure the accuracy of the installation height. When replacing or disassembling, the height fine-tuning mechanism can be used to achieve precise alignment, which facilitates the precision of disassembling bolts and angle steel.

[0047] In this invention, a bolt tightening mechanism is provided to automatically tighten the bolts. The hinged rotating ball in the tightening mechanism allows for self-adaptation to slight angle tilts during tightening, ensuring bolt tightening efficiency and reliability, improving bolt tightening capacity, and adapting to minor error requirements in on-site operations.

[0048] In this invention, by setting a rolling guide mechanism, it is possible to easily lift the better angle steel to the appropriate position on the utility pole or to disassemble the angle steel on the utility pole for overall replacement, thereby improving maintenance efficiency. The limiting mechanism can limit the angle steel and bolts, making it easy to disassemble or install and replace them. Attached Figure Description

[0049] Figure 1 A schematic diagram of the overall structure of a maintenance device for a low-voltage line equipment distribution network engineering system;

[0050] Figure 2 for Figure 1 A magnified schematic diagram of the local structure;

[0051] Figure 3 This is a schematic diagram of the bolt tightening assembly of the present invention;

[0052] Figure 4 This is a schematic diagram of the arc-shaped spring steel frame of the present invention;

[0053] Figure 5 This is a schematic diagram showing the connection relationship between the rolling guide mechanism, the limiting mechanism, and the telescopic mechanism of the present invention.

[0054] Figure 6 This is a three-dimensional structural diagram of the rolling guide mechanism of the present invention;

[0055] Figure 7 This is a schematic diagram showing the connection relationship between angle steel, connecting bolts, and insulators in the distribution network engineering system of the low-voltage line equipment to be replaced and repaired according to the present invention.

[0056] In the diagram: 1. Utility pole; 2. Insulator; 3. Screw; 4. Angle steel one; 5. Angle steel two; 6. Nut; 7. Mounting base; 8. Height fine-tuning mechanism; 9. Vertical lifting seat; 10. Horizontal extension rail; 11. Limiting plate; 12. Lifting horizontal rail seat; 13. Rolling guide mechanism; 14. Adjusting sleeve; 15. Telescopic cylinder; 16. Vertical guide groove; 17. V-shaped guide seat; 18. Bolt tightening mechanism; 19. Electric slide rail; 20. Tightening motor; 21. Hinged rotating ball; 22. Connecting seat; 23. Electric telescopic rod; 24. Connecting piece; 25. Limiting head; 26. Tightening bit; 27. Telescopic rod; 28. Arc-shaped spring steel frame; 29. ​​Abutment cylinder; 30. Wheel seat; 31. Arc-shaped elastic reinforcing thin plate; 32. Position adjusting slider; 33. Telescopic cylinder; 34. Abutment roller. Detailed Implementation

[0057] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms are interchangeable where appropriate; this is merely a way of distinguishing objects with the same attributes in the embodiments of this application. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, so that a process, method, system, product, or apparatus that comprises a series of elements is not necessarily limited to those elements, but may include other elements not explicitly listed or inherent to those processes, methods, products, or apparatuses.

[0058] Example 1: Please refer to Figures 1-7 In this embodiment of the invention, a maintenance device for a low-voltage line equipment distribution network engineering system is provided, characterized in that it includes:

[0059] Mounting base 7 is installed at the output end of the lifting platform or lifting drive equipment;

[0060] Two height fine-tuning mechanisms 8 are provided, and are respectively located at both ends of the mounting base;

[0061] The lifting horizontal rail 12 is horizontally connected to the output ends of the two height fine-tuning mechanisms 8, so that the height of the lifting seat can be finely adjusted by the height fine-tuning mechanism.

[0062] The bolt tightening mechanism 18 is horizontally slidably connected to the lifting horizontal rail 12 and is used to tighten the connecting bolts between angle steel 4 and angle steel 5 for installing insulator 2.

[0063] There are two horizontal extension rails 10, and each horizontal extension rail is connected to the output end of its respective height fine-tuning mechanism 8. The horizontal extension rails, the lifting horizontal rail seat 12 and the vertical direction are arranged in pairs orthogonal.

[0064] A telescopic mechanism is provided on the horizontal extension rail 10, which can slide along the horizontal extension rail.

[0065] A rolling guide mechanism 13 is disposed at the output end of the telescopic mechanism. Two rolling guide mechanisms 13 are disposed opposite to each other, and the distance between the two rolling guide mechanisms 13 is adjustable by the telescopic mechanism.

[0066] The limiting mechanism is adjustable and lockable on the telescopic mechanism, and the limiting mechanism is located between the rolling guide mechanism 13 and the horizontal extension rail 10.

[0067] During maintenance or replacement, the two limiting mechanisms are respectively positioned between the two bolts in the middle of the connecting angle steel one and angle steel two. The two rolling guide mechanisms 13 abut against the utility pole 1 from both sides so that the rolling guide mechanisms 13 can perform rolling guidance. The output end of the lifting platform or lifting drive device drives the mounting base 7 to rise to the required installation position. The bolt tightening mechanism 18 automatically performs the bolt tightening operation.

[0068] Similarly, during replacement and disassembly, the two limiting mechanisms are respectively positioned between the two bolts in the middle of the connecting angle steel one and angle steel two. The two rolling guide mechanisms 13 abut against the utility pole 1 from both sides so that the rolling guide mechanisms 13 can perform rolling guidance. The bolt tightening mechanism loosens or loosens the bolts and causes the limiting mechanisms and rolling guide mechanisms 13 to reposition. The limiting can be achieved manually or automatically. The output end of the lifting platform or lifting drive device drives the mounting base 7 to rise to the required installation position. The bolt tightening mechanism 18 automatically performs the bolt tightening operation.

[0069] In this invention, in order to improve the accuracy of tightening or loosening bolts, a vision guidance mechanism is also included. The vision guidance mechanism includes a high-definition camera, an image processing device, and a controller. The high-definition camera is mounted on a mounting base and is connected to the image processing device. The controller is connected to the image processing device and the bolt tightening mechanism 18. The vision guidance mechanism is used to provide feedback control for the tightening of the bolt tightening mechanism.

[0070] The height fine-tuning mechanism 8 of the present invention includes:

[0071] A height adjustment cylinder is mounted on the mounting base 7;

[0072] V-shaped guide seat 17, the V-shaped guide seat 17 is vertically fixedly installed on the upper end face of the cylinder body of the height adjustment cylinder, the horizontal cross-section of the V-shaped guide seat 17 is a V-shaped structure, and the V-shaped guide seat 17 is provided with a vertical guide groove 16.

[0073] The vertical lifting seat 9 is a structure that matches the V-shaped guide seat 17. The vertical lifting seat is provided with a slide rail that slides in cooperation with the vertical guide groove. The vertical lifting seat is fixed on the piston rod of the height adjustment cylinder. The lifting horizontal rail seat 12 is fixedly installed on the vertical lifting seat.

[0074] In this embodiment, the bolt tightening mechanism 18 includes:

[0075] Electric slide rail 19, which is fixedly installed on the lifting horizontal rail base 12;

[0076] An electric slider that engages with an electric slide rail to slide along the electric slide rail;

[0077] A bolt tightening assembly is mounted on the electric slider.

[0078] Example 2: The main difference from Example 1 is that, in this example, the bolt tightening assembly includes:

[0079] Tightening motor 20, the tightening motor is fixedly mounted on connecting seat 22, and connecting seat 22 is fixedly mounted on electric slider;

[0080] The hinged rotating ball 21 is housed in the rotating cavity within the connecting seat 22 and is rotatable. The hinged rotating ball is fixedly connected to the output shaft of the tightening motor.

[0081] An electric telescopic rod 23 is provided, one end of which is fixedly connected to the hinged rotating ball, and the other end of which is provided with a tightening head assembly. The tightening head assembly is driven by the electric telescopic rod to adjust the distance between the tightening end of the tightening head assembly and the lifting horizontal rail 12. The tightening motor drives the tightening head assembly to rotate, and the angle of the tightening end of the tightening head assembly can be slightly adjusted by the hinged rotating ball. This configuration allows bolts to be easily unscrewed or tightened even when there is a small angle of inclination between the bolt tightening head and the bolt, improving the accuracy and efficiency of the operation.

[0082] The tightening head assembly includes a limiting head 25 and a tightening bit 26. The output end of the electric telescopic rod 23 is connected to a connector 24. The end of the connector 24 is fixedly provided with the limiting head 25, and the end of the limiting head is replaceably provided with the tightening bit 26.

[0083] The rolling guide mechanism 13 includes:

[0084] An arc-shaped spring steel frame 28 is fixedly connected to the telescopic mechanism;

[0085] The arc-shaped spring steel frame 28 has symmetrical connecting protrusions on its arc-shaped inner side;

[0086] Abutting cylinder 29, the cylinder body of which is fixedly mounted on the connecting protrusion, and the output end of which is connected to a wheel seat 30 via an elastic element;

[0087] The abutting roller 34 consists of two rollers arranged vertically and are rotatably mounted on the wheel seat. The abutting roller abuts against the utility pole and can roll up and down along the utility pole.

[0088] An arc-shaped elastic reinforcing plate 31 is also provided on the lower side of the arc-shaped spring steel frame 28. The arc-shaped elastic reinforcing plate 31 is made of steel sheet made of spring steel, and the length of the arc-shaped elastic reinforcing plate 31 is less than three-quarters of the length of the arc-shaped spring steel frame 28.

[0089] The telescopic mechanism includes:

[0090] Position adjustment slider 32, which is slidably fitted onto the horizontal extension rail 10;

[0091] Telescopic cylinder 33, wherein the telescopic cylinder 33 is fixedly mounted on the position adjusting slider by means of a cylinder seat;

[0092] Telescopic cylinder 15, the telescopic cylinder has a blind hole in the center, the end of the telescopic cylinder without the blind hole is fixedly connected to the output end of the telescopic cylinder, the telescopic rod 27 is telescopically sleeved in the blind hole of the telescopic cylinder, and a strong spring is provided between the end of the telescopic rod and the bottom wall of the blind hole of the telescopic cylinder.

[0093] The telescopic rod 27, and the arc-shaped spring steel frame 28 are fixedly installed at the end of the telescopic rod away from the telescopic cylinder.

[0094] The limiting mechanism includes:

[0095] Adjusting sleeve 14 is slidably fitted onto telescopic rod 27, and a locking bolt is provided on the adjusting sleeve, which can lock the adjusting sleeve onto the telescopic rod.

[0096] The limiting plate 11 is vertically extended and fixedly installed on the adjusting sleeve. During maintenance or replacement, the limiting plate can abut against the two bolts that are located in the middle of the connecting angle steel one and angle steel two, and can make the abutting roller 34 abut against the outer circumference of the utility pole.

[0097] The height fine-tuning mechanism of this invention allows the lifting platform or lifting drive device to raise the entire device to a suitable installation position during actual operation. The mechanism then fine-tunes the height to ensure accuracy. During replacement and disassembly, precise alignment is achieved, facilitating the removal of bolts and angle steel. The bolt tightening mechanism automatically tightens the bolts. The hinged rotating ball in the tightening mechanism allows for slight tilting during tightening, ensuring tightening efficiency and reliability, improving tightening capacity, and adapting to minor errors in on-site operations. The rolling guide mechanism facilitates the lifting of angle steel to a suitable position on the utility pole or the removal of angle steel from the pole for complete replacement, improving maintenance efficiency. The limiting mechanism limits the angle steel and bolts, facilitating disassembly or installation / replacement.

[0098] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A maintenance device for a low-voltage line equipment distribution network engineering system, characterized in that, include: Mounting base (7) is installed at the output end of the lifting platform or lifting drive equipment; Two height fine-tuning mechanisms (8) are provided, and are respectively located at both ends of the mounting base; The lifting horizontal rail (12) is horizontally connected across the output ends of the two height fine-tuning mechanisms (8) so that the height of the lifting horizontal rail (12) can be finely adjusted by the height fine-tuning mechanisms. The bolt tightening mechanism (18) is horizontally slidably connected to the lifting horizontal rail (12) and is used to tighten the connecting bolts between angle steel one (4) and angle steel two (5) for installing the insulator (2); There are two horizontal extension rails (10), and each horizontal extension rail is connected to the output end of its respective height fine adjustment mechanism (8). The horizontal extension rails, the lifting horizontal rail seat (12), and the vertical direction are arranged in pairs orthogonal. A telescopic mechanism is provided on the horizontal extension rail (10) and is slidable along the horizontal extension rail. A rolling guide mechanism (13) is provided at the output end of the telescopic mechanism. Two rolling guide mechanisms (13) are arranged opposite to each other, and the distance between the two rolling guide mechanisms (13) is adjustable by the telescopic mechanism. A limiting mechanism is adjustablely and lockably mounted on the telescopic mechanism, and the limiting mechanism is located between the rolling guide mechanism (13) and the horizontal extension rail (10). During maintenance or replacement, the two limiting mechanisms are respectively positioned between the two bolts in the middle of the connecting angle steel one and angle steel two. The two rolling guide mechanisms (13) abut against the utility pole (1) from both sides so that the rolling guide mechanisms (13) can perform rolling guidance. The output end of the lifting platform or lifting drive device drives the mounting base (7) to rise to the required installation position. The bolt tightening mechanism (18) automatically performs the bolt tightening operation.

2. The maintenance device for a low-voltage line equipment distribution network engineering system according to claim 1, characterized in that, It also includes a visual guidance mechanism, which includes a high-definition camera, an image processing device and a controller. The high-definition camera is mounted on a mounting base and is connected to the image processing device. The controller is connected to the image processing device and the bolt tightening mechanism (18). The visual guidance mechanism is used to provide feedback control for the tightening of the bolt tightening mechanism.

3. The maintenance device for a low-voltage line equipment distribution network engineering system according to claim 1, characterized in that, The height fine-tuning mechanism (8) includes: A height adjustment cylinder is mounted on the mounting base (7); V-shaped guide seat (17) is vertically fixed on the upper end face of the cylinder body of the height adjustment cylinder. The horizontal cross-section of the V-shaped guide seat (17) is a V-shaped structure, and a vertical guide groove (16) is provided on the V-shaped guide seat (17). The vertical lifting seat (9) is a structure that matches the V-shaped guide seat (17). The vertical lifting seat is provided with a slide rail that slides in cooperation with the vertical guide groove. The vertical lifting seat is fixed on the piston rod of the height adjustment cylinder. The lifting horizontal rail seat (12) is fixedly installed on the vertical lifting seat.

4. A maintenance device for a low-voltage line equipment distribution network engineering system according to claim 2, characterized in that, The bolt tightening mechanism (18) includes: Electric slide rail (19), which is fixedly installed on the lifting horizontal rail base (12); An electric slider that engages with an electric slide rail to slide along the electric slide rail; A bolt tightening assembly is mounted on the electric slider.

5. A maintenance device for a low-voltage line equipment distribution network engineering system according to claim 4, characterized in that, The bolt tightening assembly includes: Tightening motor (20), the tightening motor is fixedly mounted on connecting seat (22), the connecting seat (22) is fixedly mounted on electric slider; The hinged rotating ball (21) is housed in the rotating cavity within the connecting seat (22) and can rotate slightly. The hinged rotating ball is fixedly connected to the output shaft of the tightening motor. An electric telescopic rod (23) is provided. One end of the electric telescopic rod (23) is fixedly connected to the hinged rotating ball. The other end of the electric telescopic rod is provided with a tightening head assembly. The tightening head assembly is driven by the electric telescopic rod to adjust the distance between the tightening end of the tightening head assembly and the lifting horizontal rail seat (12). The tightening motor drives the tightening head assembly to rotate, and the angle of the tightening end of the tightening head assembly can be slightly adjusted by the hinged rotating ball.

6. A maintenance device for a low-voltage line equipment distribution network engineering system according to claim 5, characterized in that, The tightening head assembly includes a limiting head (25) and a tightening bit (26). The output end of the electric telescopic rod (23) is connected to a connector (24). The end of the connector (24) is fixedly provided with the limiting head (25), and the end of the limiting head is replaceably provided with the tightening bit (26).

7. A maintenance device for a low-voltage line equipment distribution network engineering system according to claim 5, characterized in that, The rolling guide mechanism (13) includes: An arc-shaped spring steel frame (28) is fixedly connected to the telescopic mechanism; The arc-shaped spring steel frame (28) has symmetrical connecting protrusions on its arc-shaped inner side; Abutting cylinder (29) is fixedly mounted on the connecting protrusion, and the output end of the abutting cylinder is connected to a wheel seat (30) through an elastic element. Abutting roller (34), wherein there are two abutting rollers arranged vertically, and the abutting rollers are rotatably mounted on the wheel seat, the abutting rollers abut against the utility pole, and can roll up and down along the utility pole.

8. A maintenance device for a low-voltage line equipment distribution network engineering system according to claim 7, characterized in that, The lower side of the arc-shaped spring steel frame (28) is also provided with an arc-shaped elastic reinforcing plate (31), which is made of steel sheet made of spring steel. The length of the arc-shaped elastic reinforcing plate (31) is less than three-quarters of the length of the arc-shaped spring steel frame (28).

9. A maintenance device for a low-voltage line equipment distribution network engineering system according to claim 8, characterized in that, The telescopic mechanism includes: A position adjustment slider (32) is slidably fitted onto the horizontal extension rail (10); Telescopic cylinder (33), wherein the telescopic cylinder (33) is fixedly mounted on the position adjusting slider by means of a cylinder seat; Telescopic cylinder (15), the telescopic cylinder has a blind hole in the center, the end of the telescopic cylinder without the blind hole is fixedly connected to the output end of the telescopic cylinder, the telescopic cylinder is telescopically fitted with a telescopic rod (27) in the blind hole, and a strong spring is provided between the end of the telescopic rod and the bottom wall of the blind hole of the telescopic cylinder; The telescopic rod (27) is fixedly installed at the end of the telescopic rod away from the telescopic cylinder.

10. A maintenance device for a low-voltage line equipment distribution network engineering system according to claim 9, characterized in that, The limiting mechanism includes: Adjusting sleeve (14), the adjusting sleeve is slidably fitted on the telescopic rod (27), and the adjusting sleeve is provided with a locking bolt, the locking bolt can lock the adjusting sleeve on the telescopic rod; The limiting plate (11) is vertically extended and fixedly installed on the adjusting sleeve. When maintenance or replacement is carried out, the limiting plate can abut against the two bolts that are located in the middle part of the connecting angle steel one and angle steel two, and can make the abutting roller (34) abut against the outer circumference of the utility pole.

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