Network maintenance equipment

Abstract

The utility model discloses network maintenance equipment. The network maintenance equipment comprises an equipment body, a monitoring assembly and a magnetic source assembly, the monitoring assembly and the magnetic source assembly are both installed on the equipment body. The monitoring assembly is connected with the equipment body and is used for monitoring an interference magnetic field around the equipment body; the magnetic source assembly is used for generating the interference magnetic field capable of counteracting or partially counteracting the interference magnetic field. According to the utility model, in the use process of monitoring equipment, a strong electromagnetic field possibly existing in the environment can be reduced, and the accuracy of a monitoring result is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of network maintenance, in particular to a network maintenance device. Background Art

[0002] 5G network is the abbreviation of the fifth generation mobile communication network. It is a new generation of wireless communication technology. Compared with previous generations of networks, it has higher speed, lower latency and larger capacity. It uses higher frequency bands and more advanced technologies to support more device connections and achieve faster data transmission speeds. 5G network optimization and maintenance equipment is a type of tools and equipment used to monitor, analyze, diagnose and optimize 5G network performance. They help operators or network managers monitor and manage 5G networks to ensure network stability, reliability and performance.

[0003] Currently, in the process of 5G network application, 5G network performance monitoring equipment is used to test and optimize the performance and coverage of 5G base stations, including signal quality, coverage strength, interference, etc. Since 5G network performance monitoring equipment is mostly installed outdoors, there are strong electromagnetic field interference sources in the outdoor environment, such as high-voltage wires, electronic equipment, etc., which interfere with the signal transmission of the connecting line, resulting in signal quality degradation or unstable connection, which in turn affects the normal operation of the 5G network performance monitoring equipment.

[0004] How to prevent monitoring equipment from being interfered by strong electromagnetic fields is one of the important issues that need to be solved urgently in this field. Utility Model Content

[0005] The utility model aims to provide a network maintenance device to solve the deficiencies in the prior art. The utility model can reduce the strong electromagnetic field that may exist in the environment during the use of the monitoring device and ensure the accuracy of the monitoring result.

[0006] The utility model proposes a network maintenance device, which comprises a device body, a monitoring component and a magnetic source component;

[0007] The monitoring component and the magnetic source component are both installed on the device body;

[0008] The monitoring component is connected to the device body and is used to monitor the interference magnetic field around the device body;

[0009] The magnetic source component is used to generate a magnetic field that can offset or partially offset the interfering magnetic field.

[0010] As for the network maintenance device as described above, optionally, the monitoring component includes a magnetic field camera rotatably connected to the device body.

[0011] In the network maintenance device as described above, optionally, the magnetic source component includes a magnetic field source and a power controller for controlling the magnetic field source to generate a magnetic field.

[0012] As the network maintenance device as described above, optionally, the magnetic source component further includes a magnetic conductor, and the magnetic conductor is connected to the magnetic field source.

[0013] The network maintenance device as described above, wherein optionally: further comprises a mounting frame, wherein the mounting frame is fixedly connected to the device body, and the monitoring component and the magnetic source component are both mounted on the mounting frame.

[0014] The network maintenance device as described above, wherein, optionally: the device body includes a support box, a control system, a leak plate, a signal generator and a signal analyzer;

[0015] The leak plate is arranged in the supporting box, and the signal generator and the signal analyzer are both arranged on the leak plate; the signal generator, the signal analyzer, the monitoring component and the magnetic source component are electrically connected to the control system.

[0016] The network maintenance equipment as described above, wherein optionally: a wire hole for the wire to pass through is provided at the bottom of the support box, and two sealing shells are provided at the bottom of the support box, and the two sealing shells can be assembled into a sealing cover for sealing the wire hole; at least one of the sealing shells is slidably connected to the support box.

[0017] The network maintenance device as described above, wherein, optionally: a gas detector is installed on at least one of the sealed shells;

[0018] The sealing shell is connected to a connecting pipe, the other end of the connecting pipe is connected to a gas tank, and an air pump is installed on the connecting pipe; the air pump is used to pump gas into the space enclosed by the sealing cover and the supporting box when the gas detector detects that the oxygen concentration in the space is greater than a set value;

[0019] The gas in the gas tank is nitrogen.

[0020] The network maintenance device as described above, wherein optionally: further comprises a support frame and a telescopic member; two ends of the telescopic member are respectively connected to the support frame and the device body.

[0021] The network maintenance device as described above, wherein, optionally: the telescopic member includes a cylinder, a lifting rod and a piston;

[0022] The piston is slidably arranged in the cylinder, one end of the lifting rod is fixedly connected to the piston, and the other end is connected to the equipment body.

[0023] The network maintenance device as described above, wherein optionally: the cylinder is connected to the negative pressure pump through a pipeline; and a valve is provided on the pipeline.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] In daily protection of the 5G network performance monitoring equipment in the maintenance equipment for 5G network optimization, the external magnetic field is first detected through the detection component. When external magnetic field interference is detected, the power controller adjusts and controls the strength, direction and distribution of the magnetic field to reduce interference to the 5G network performance monitoring equipment, thus solving the problem in the prior art that the 5G network performance monitoring equipment is easily interfered by the external magnetic field during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a front perspective view of the maintenance equipment for 5G network optimization proposed by the utility model;

[0027] Figure 2 A partial stereoscopic diagram of the monitoring component of the maintenance equipment for 5G network optimization proposed in the utility model;

[0028] Figure 3 This is a partially cutaway stereoscopic view of a hollow rod of a maintenance device for 5G network optimization proposed in the utility model;

[0029] Figure 4 This is a partial three-dimensional diagram of the support box of the maintenance equipment for 5G network optimization proposed in the utility model;

[0030] Figure 5 A partial stereoscopic diagram of a signal analyzer for maintenance equipment for 5G network optimization proposed in the utility model;

[0031] Figure 6 A partial three-dimensional diagram of the leak plate of the maintenance equipment for 5G network optimization proposed by the utility model;

[0032] Figure 7 For this utility model Figure 6 Enlarged view of point A in the middle;

[0033] Figure 8 This is a partial three-dimensional diagram of the protective component of the maintenance equipment for 5G network optimization proposed by the utility model;

[0034] Fig. 9 This is a three-dimensional diagram of the sealing shell of the maintenance equipment for 5G network optimization proposed by the utility model.

[0035] Description of reference numerals:

[0036] 1-equipment body, 2-monitoring component, 3-magnetic source component, 4-mounting frame, 5-support frame, 6-telescopic part, 7-alarm;

[0037] 11-support box, 12-control system, 13-leak plate, 14-signal generator, 15-signal analyzer, 16-sealed shell, 17-spectrum analyzer, 18-electric push rod;

[0038] 111 - mounting groove, 112 - limiting tube;

[0039] 161 - slider, 162 - slot, 163 - gasket, 164 - gas detector, 165 - connecting pipe, 166 - gas tank, 167 - air pump;

[0040] 21 - magnetic field camera, 22 - drive motor, 23 - rotating tube, 24 - rotating block;

[0041] 31 - magnetic field source, 32 - power controller, 33 - magnetic conductor;

[0042] 41 - lifting plate, 42 - auxiliary plate, 43 - limiting rod;

[0043] 61 - cylinder, 62 - lifting rod, 63 - piston, 64 - pipeline, 65 - valve, 66 - negative pressure pump. DETAILED DESCRIPTION

[0044] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0045] In response to the problems raised in the background technology, this embodiment proposes the following solutions.

[0046] Please refer to Figures 1 to 9 The utility model provides a network maintenance device, which includes a device body 1, a monitoring component 2 and a magnetic source component 3. In this embodiment, the magnetic source component 3 can generate a magnetic field with controllable magnetic field strength and direction.

[0047] For details, please refer to Figure 1 and Figure 2 The monitoring component 2 and the magnetic source component 3 are both installed on the device body 1. The monitoring component 2 is connected to the device body 1 and is used to monitor the interference magnetic field around the device body 1; the magnetic source component 3 is used to generate a magnetic field that can offset or partially offset the interference magnetic field.

[0048] Specifically, the connection between the monitoring component 2 and the device body 1 can be a fixed connection, but in order to fully monitor the surroundings, the monitoring component 2 can be movably connected to the device body 1, such as rotating, moving, etc.; of course, the monitoring component on the monitoring component 2 can also be able to rotate or move relative to the device body. In order to enable the magnetic source component 3 to specifically reduce the problem of external magnetic field interference, the magnetic source component 3 can be able to rotate, move or twist relative to the device body 1.

[0049] During use, when external magnetic field interference is detected, the position of the oil magnetic field is first photographed through the magnetic field camera and the alarm is activated. Then, the magnetic field is generated by the magnetic field source to control and guide the magnetic field. The power controller adjusts and controls the intensity, direction and distribution of the magnetic field to reduce interference with the 5G network performance monitoring equipment, solving the problem in the prior art that the 5G network performance monitoring equipment is easily interfered by the external magnetic field during operation.

[0050] For details, please refer to Figure 1 and Figure 2 , and also includes a mounting frame 4, the mounting frame 4 is fixedly connected to the device body 1, and the monitoring component 2 and the magnetic source component 3 are both mounted on the mounting frame 4. In a specific implementation, the mounting frame 4 also includes a mounting frame 4, the mounting frame 4 is fixedly connected to the device body 1, and the monitoring component 2 and the magnetic source component 3 are both mounted on the mounting frame 4.

[0051] For specific implementation, please refer to Figure 2 The mounting frame 4 includes a lifting plate 41, an auxiliary plate 42 and a limiting rod 43. The lifting plate 41 is fixedly mounted on the device body 1, specifically, it can be mounted on the top of the device body 1. One end of the limiting rod 43 is arranged on the top of the lifting plate 41, and the other end of the limiting rod 43 is connected to the auxiliary plate 42.

[0052] The monitoring component 2 is rotatably mounted on the lifting plate 41 and is located between the lifting plate 41 and the auxiliary plate 42. The magnetic source component 3 is mounted on the auxiliary plate 42.

[0053] Furthermore, specifically, the monitoring assembly 2 includes a magnetic field camera 21 rotatably connected to the device body 1. In implementation, the monitoring assembly 2 also includes a driving motor 22, a rotating tube 23 and a rotating block 24, the driving motor 22 is fixedly mounted on the lifting plate 41, the rotating tube 23 is fixedly connected to the output shaft of the driving motor 22, the rotating block 24 is fixedly connected to the rotating tube 23, and the magnetic field camera 21 is fixedly mounted on the rotating block 24.

[0054] In a specific implementation, an alarm 7 is also included, which is arranged on the auxiliary board 42 and electrically connected to the monitoring component 2, and is used to issue an alarm when the monitoring component 2 detects an interfering magnetic field. In some implementations, an alarm signal can also be issued to the mobile terminal or the host computer through the network.

[0055] In order to generate a magnetic source for offsetting the interfering magnetic field, in the utility model, the magnetic source assembly 3 includes a magnetic field source 31 and a power controller 32 for controlling the magnetic field source 31 to generate a magnetic field. Specifically, the magnetic source assembly 3 is mounted on the auxiliary board 42, and specifically, the power controller 32 is fixed on the auxiliary board 42, and the magnetic field source 31 is connected to the power controller 32. In a specific implementation, the magnetic field source 31 is an electromagnetic coil.

[0056] In order to facilitate the targeted offsetting of the interfering magnetic field, in this embodiment, the magnetic source component 3 also includes a magnetic conductor 33, and the magnetic conductor 33 is connected to the magnetic field source 31. The magnetic conductor 33 is a key part of the magnetic field guiding device, which is used to conduct and guide the direction of the magnetic field transfer magnetic field, and then adjust and control the strength, direction and distribution of the magnetic field through the power controller 32, thereby realizing the transfer of the direction of the external magnetic field, reducing the interference to the 5G network performance monitoring equipment, and solving the problem that the 5G network performance monitoring equipment in the prior art is easily interfered by the external magnetic field during operation.

[0057] Specifically, in order to perform equipment maintenance, the equipment body 1 includes a support box 11 , a control system 12 , a leak plate 13 , a signal generator 14 and a signal analyzer 15 .

[0058] Furthermore, a signal analyzer 15 is arranged near the top of the outer surface of the orifice plate 13, a spectrum analyzer 17 is arranged near the center of the outer surface of the orifice plate 13, and a signal generator 14 is arranged on the inner bottom surface of the support box 11. Since the device body 1 releases heat outward during daily operation, the orifice plate 13 is arranged to effectively dissipate heat for the device body 1. The 5G network performance monitoring device includes a signal generator 14 for generating signals that meet the 5G network standard and simulating the network environment under different scenarios and business requirements, a signal analyzer 15 for analyzing and measuring signals transmitted by a 5G base station to evaluate signal quality, spectrum occupancy and modulation and demodulation performance, and a spectrum analyzer 17 for analyzing the 5G spectrum, detecting spectrum usage, interference sources, and overlap and conflict problems between frequency bands, etc. The 5G network performance monitoring instrument collects, measures, analyzes and displays network parameter data to monitor and evaluate the performance status of the 5G network in real time, and provide information on network health and optimization. That is, the leak plate 13 is arranged in the support box 11, the signal generator 14 and the signal analyzer 15 are arranged on the leak plate 13; the signal generator 14, the signal analyzer 15, the monitoring component 2 and the magnetic source component 3 are electrically connected to the control system 12. In a specific implementation, the alarm 7 is electrically connected to the control system 12.

[0059] In order to facilitate the passing of wires and realize the connection between the entire device and external electrical appliances, a wire hole for the wire to pass through is provided at the bottom of the support box 11. In order to prevent the interface between the wire and the wire hole from being corroded by rain or gas in the external environment, the present embodiment has also made the following improvements: two sealing shells 16 are provided at the bottom of the support box 11, and the two sealing shells 16 can be assembled into a sealing cover that seals the wire hole; at least one of the sealing shells 16 is slidably connected to the support box 11. In specific implementation, the sliding of the sealing shell 16 can be driven by an electric push rod 18. Specifically, a fixed plate can be provided on the support box 11, so that the two ends of the electric push rod 18 are respectively connected to the fixed plate and the slidable sealing shell 16. In one implementation, a mounting groove 111 is provided at the bottom of the support box 11, and a position limiting tube 112 is provided in the mounting groove 111. A slider 161 slidably connected to the position limiting tube 112 is provided on at least one of the sealing shells 16. The two sealing shells 16 can be combined with the wire hole to form a sealing cover covering the wire hole. A groove 162 is provided on one of the sealing shells 16, and a gasket 163 matched with the groove 162 is provided on the other sealing shell 16. The gasket 163 is an annular sealing element made of rubber material. Rubber has good elasticity and plasticity, can form a good seal at the connection part to prevent medium leakage, rubber can fill the uneven connection surface, ensure the sealing performance of the connection, has excellent corrosion resistance, and can be used in various corrosive media environments. Different types of gaskets 163 are suitable for different environments and media, and can maintain good elasticity and sealing performance within a certain temperature range. Some special rubber materials also have the characteristics of high temperature resistance or low temperature resistance, which are suitable for use in extreme temperature environments, thereby effectively protecting the connection of the wire. In this way, the wire and the wire hole can be prevented from being eroded by rain or gas in the external environment. During installation, the wire is first passed through the wire hole. The setting of the sealing shell 16 facilitates the sealing of the interface of the wire. When the wire is installed, the electric push rod 18 is started, so that the gasket 163 is embedded in the inside of the card slot 162, so that the inside between the two sealing shells is in a sealed state. When the gas detector detects the presence of oxygen at the connection of the wire, the gas between the movable box and the fixed box is diluted, thereby effectively reducing the erosion of the interface of the wire by oxygen.

[0060] In the specific implementation, in order to ensure safety, at least one of the sealed shells 16 is also provided with a gas detector 164. The gas detector 164 is an infrared absorption type and is a device used to detect and measure the gas concentration in the environment. It is commonly used in fields such as safety monitoring, industrial control and environmental monitoring. The gas concentration is detected by using the absorption characteristics of specific gas molecules to infrared rays. The detector emits infrared rays of a specific wavelength. When the target gas exists, the gas absorbs the infrared rays of a specific wavelength, so that the infrared intensity received by the detector changes, and then the gas concentration is determined. A connecting pipe 165 is connected to the sealed shell 16, and the other end of the connecting pipe 165 is connected to a gas tank 166. An air pump 167 is installed on the connecting pipe 165; the air pump 167 is used to pump gas into the space when the gas detector 164 detects that the oxygen concentration in the space enclosed by the sealing cover and the support box 11 is greater than the set value; when the gas detector 164 detects that oxygen appears at the connection of the wire or the oxygen concentration is greater than the set value, gas is pumped into the space; the gas in the gas tank 166 is nitrogen. Specifically, the gas detector 164 and the air pump are both electrically connected to the control system 12. By pumping in nitrogen, the oxygen in the space can be diluted, thereby effectively reducing the erosion of the wire holes by oxygen. Nitrogen is an inert gas with very high chemical stability and rarely participates in chemical reactions. Their outer electron shells have stable eight electrons, and except for helium, they all follow the eight-electron rule, which makes it difficult for them to lose or gain electrons, and therefore difficult to react chemically with other elements.

[0061] In the specific implementation, in extreme weather conditions, in order to prevent the 5G network performance monitoring equipment from tipping over, this embodiment has been further improved, that is, it also includes a support frame 5 and a telescopic member 6; the two ends of the telescopic member 6 are respectively connected to the support frame 5 and the device body 1. In the specific implementation, an isolation pad can also be set between the support frame 5 and the telescopic member 6. The function of the telescopic member 6 is to control the contraction of the telescopic member 6 in extreme weather to lower the center of gravity of the entire device. Specifically, the telescopic member 6 includes a cylinder 61, a lifting rod 62 and a piston 63. The piston 63 is slidably arranged in the cylinder 61, one end of the lifting rod 62 is fixedly connected to the piston 63, and the other end is connected to the device body 1. The cylinder 61 is connected to the negative pressure pump through a pipeline 64; a valve 65 is provided on the pipeline 64.

[0062] In extreme weather conditions, in order to prevent the 5G network performance monitoring equipment from tipping over, the negative pressure pump 66 is started and the valve 65 is opened to extract gas from the inside of the cylinder 61, thereby reducing the air pressure inside the cylinder 61. The piston 63 is driven downward by the suction of the negative pressure pump 66, and the movement of the piston 63 drives the lifting rod 62 downward, thereby driving the device body 1 downward. By lowering the height of the device body 1, the force of the strong wind blowing on it is reduced, thereby effectively protecting the 5G network performance monitoring equipment.

[0063] The usage method and working principle of this device are as follows: in daily protection of the 5G network performance monitoring equipment in the maintenance equipment for 5G network optimization, the 5G network performance monitoring equipment includes a signal generator 14 for generating signals that meet the 5G network standards, simulating the network environment under different scenarios and business requirements, and a signal analyzer 405 for analyzing and measuring the signals transmitted by the 5G base station to evaluate the signal quality, spectrum occupancy and modulation and demodulation performance. The spectrum analyzer 17 is used to analyze the 5G spectrum, detect the spectrum usage, interference sources, and overlap and conflict problems between frequency bands, etc. The 5G network performance monitoring instrument collects, measures, analyzes and displays network parameter data to Real-time monitoring and evaluation of the performance status of the 5G network, providing information about network health and optimization. Such an instrument can help operators and network managers to optimize and troubleshoot the network, thereby improving network stability and user experience. During operation, firstly, the control system 12 is used to start the drive motor 22, which drives the rotating tube 23 to rotate. The rotation of the rotating tube 23 drives the rotating block 24 to rotate. The rotation of the rotating block 24 drives the magnetic field camera 21 to rotate. The magnetic field camera 21 is a device for visualizing the distribution of the magnetic field. It can detect and display the magnetic field through a specific principle. The magnetic field camera 21 works based on the magnetic induction principle. It senses the magnetic field by implanting magnetic field sensitive materials. The magnetic field camera 21 can detect the magnetic field and convert it into visible light or other forms of signals. The magnetic field sensitive material in the magnetic field camera 21 is ferromagnetic powder. When the magnetic field acts on these sensitive materials, they will undergo physical changes, such as changes in the magnetic induction intensity and direction of the magnetic material. The magnetic field camera 21 uses a camera to obtain the light signal on the magnetic field sensitive material. The magnetic field camera 21 can image and display the magnetic field on the magnetic field sensitive material through the optical device. In this way, the user can observe and analyze the distribution of the magnetic field in real time. When the magnetic field camera 21 detects external magnetic field interference, the magnetic field camera 21 first takes a picture of the position of the oil magnetic field, which is convenient for the staff to later check the magnetic field position. The device searches for the device, and then starts the alarm 7 through the control system 12 to send an alarm signal to the outside world to remind the staff that there is a magnetic field interfering with the 5G network performance monitoring equipment. Then, a magnetic field is generated by a magnetic field source 31 to control and guide the magnetic field. Among them, the magnetic field source 31 is an electromagnetic coil, and the magnetic conductor 33 is a key part of the magnetic field guiding device, which is used to conduct and guide the magnetic field to transfer the direction of the magnetic field. Then, the power controller 32 is used to adjust and control the strength, direction and distribution of the magnetic field, so as to realize the transfer of the direction of the external magnetic field, reduce the interference to the 5G network performance monitoring equipment, and solve the problem that the 5G network performance monitoring equipment in the prior art is easily interfered by the external magnetic field during operation.

[0064] It should be pointed out that the wiring diagram of the negative pressure pump 66, control system 12, signal generator 14, signal analyzer 15, spectrum analyzer 17, drive motor 22, magnetic field camera 21, power controller 32, alarm 7, electric push rod 18, gas detector 164 and air pump 167 in the utility model belongs to the common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use, which can be realized by technical personnel in this field. Therefore, the control method and wiring arrangement of the negative pressure pump 66, control system 12, signal generator 14, signal analyzer 15, spectrum analyzer 17, drive motor 22, magnetic field camera 21, power controller 32, alarm 7, electric push rod 18, gas detector 164 and air pump 167 will no longer be explained in detail.

[0065] The above describes in detail the structure, features and effects of the utility model based on the embodiments shown in the drawings. The above is only a preferred embodiment of the utility model, but the utility model is not limited to the scope of implementation shown in the drawings. Any changes made in accordance with the concept of the utility model, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and the drawings, should be within the protection scope of the utility model.

Claims

1. A network maintenance device, characterized in that: It comprises a device body (1), a monitoring component (2) and a magnetic source component (3); The monitoring component (2) and the magnetic source component (3) are both installed on the device body (1); The monitoring component (2) is connected to the device body (1) and is used to monitor the interfering magnetic field around the device body (1); The magnetic source component (3) is used to generate a magnetic field that can offset or partially offset the interfering magnetic field.

2. The network maintenance device according to claim 1, characterized in that: The monitoring component (2) comprises a magnetic field camera (21) rotatably connected to the device body (1).

3. The network maintenance device according to claim 1, characterized in that: The magnetic source component (3) comprises a magnetic field source (31) and a power supply controller (32) for controlling the magnetic field source (31) to generate a magnetic field.

4. The network maintenance device according to claim 3, characterized in that: The magnetic source component (3) further comprises a magnetic conductor (33), wherein the magnetic conductor (33) is connected to the magnetic field source (31).

5. The network maintenance device according to claim 1, characterized in that: It also comprises a mounting frame (4), the mounting frame (4) being fixedly connected to the equipment body (1), and the monitoring component (2) and the magnetic source component (3) being both mounted on the mounting frame (4).

6. The network maintenance device according to claim 1, characterized in that: The device body (1) comprises a support box (11), a control system (12), a leak plate (13), a signal generator (14) and a signal analyzer (15); The leak plate (13) is arranged in the support box (11), and the signal generator (14) and the signal analyzer (15) are both arranged on the leak plate (13); the signal generator (14), the signal analyzer (15), the monitoring component (2) and the magnetic source component (3) are electrically connected to the control system (12).

7. The network maintenance device according to claim 6, characterized in that: The bottom of the support box (11) is provided with a wire hole for the wire to pass through, and the bottom of the support box (11) is provided with two sealing shells (16), and the two sealing shells (16) can be assembled into a sealing cover for sealing the wire hole; at least one of the sealing shells (16) is slidably connected to the support box (11).

8. The network maintenance device according to claim 7, characterized in that: A gas detector (164) is installed on at least one of the sealed shells (16); The sealing shell (16) is connected to a connecting pipe (165), the other end of the connecting pipe (165) is connected to a gas tank (166), and an air pump (167) is installed on the connecting pipe (165); the air pump (167) is used to pump gas into the space enclosed by the sealing cover and the supporting box (11) when the gas detector (164) detects that the oxygen concentration in the space is greater than a set value; The gas in the gas tank (166) is nitrogen.

9. The network maintenance device according to claim 1, characterized in that: It also comprises a support frame (5) and a telescopic member (6); two ends of the telescopic member (6) are respectively connected to the support frame (5) and the device body (1).

10. The network maintenance device according to claim 9, characterized in that: The telescopic member (6) comprises a cylinder (61), a lifting rod (62) and a piston (63); The piston (63) is slidably disposed in the cylinder (61); one end of the lifting rod (62) is fixedly connected to the piston (63), and the other end is connected to the equipment body (1).

11. The network maintenance device according to claim 10, characterized in that: The cylinder (61) is connected to the negative pressure pump via a pipeline (64); a valve (65) is provided on the pipeline (64).

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