A high-stability power quality on-line monitoring device

Abstract

The application discloses a kind of high stability power quality on-line monitoring device, belong to power quality monitoring technical field, the application is rotated by steering control component and drives steering assembly reset, make pulley walk to the extrusion movement of arc surface can exert force to connecting joint, ensure that connecting joint is accurately installed in place, improve wiring efficiency and installation accuracy, connecting joint can be locked simultaneously, avoid the problem that connecting joint is loose, contact is bad even connecting joint drops out caused by cable is pulled by external force, equipment vibration, simultaneously, cable and connecting joint connecting part are spiral, can move when force, in turn, can adapt to slight pulling deformation, avoid cable hard stress damage, simultaneously, steering control component is automatically triggered alarm after external force increases, and timely early warning line loose hidden danger, facilitate staff timely maintenance, from wiring source guarantee that intelligent sensor continues, stable, accurate acquisition working condition.

Description

Technical Field

[0001] This invention relates to the field of power quality monitoring technology, and in particular to a highly stable online power quality monitoring device. Background Technology

[0002] Online power quality monitoring is an important basic means of power operation and maintenance and distribution control. As the core sensing component of intelligent sensing system, intelligent sensors are widely used in online power quality monitoring devices. They are responsible for the real-time acquisition of electrical parameters such as voltage, current, harmonics, and fluctuations. Their working stability directly determines the accuracy and continuity of power monitoring data. Current power quality online monitoring devices typically rely on simple plug-in connections for wiring, lacking auxiliary alignment and self-locking structures. This makes wiring and installation difficult, and cables are prone to loosening, poor contact, or even detachment due to prolonged external pulling and vibration, severely disrupting data acquisition. Furthermore, traditional devices lack tension buffering and over-limit warning functions, making it impossible to anticipate potential line tension issues. Faults are often sudden, hindering early intervention by power maintenance personnel. Additionally, existing devices often have rigid, fixed casings and internal monitoring components, making them susceptible to damage to internal intelligent sensors and precision circuits from impacts when idle. During operation, the buffer gap cannot be eliminated, leading to vibrations that cause monitoring point shifts and data jitter. This fails to balance idle impact protection with operational monitoring stability, making it difficult to meet the long-term, high-precision, and highly stable online monitoring requirements of intelligent sensing systems.

[0003] To address the above problems, this invention proposes a highly stable online power quality monitoring device. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing power quality online monitoring devices, such as the lack of auxiliary alignment and self-locking structures at the wiring ports, making wiring alignment difficult. Furthermore, the cables are prone to loosening, poor contact, or even detachment due to long-term external pulling and vibration. Traditional devices also lack tension buffering and over-limit warning functions. Additionally, the existing devices often have rigid, fixed structures for the outer shell and internal monitoring body, making them susceptible to damage to internal intelligent sensors and precision circuits from external impacts when idle. Moreover, the buffer gap cannot be eliminated during operation. Therefore, this invention proposes a highly stable power quality online monitoring device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A highly stable online power quality monitoring device includes a protective mechanism, wherein a monitoring device is installed in the protective mechanism; The protective mechanism includes a protective component and multiple connecting joints. The connecting joints are provided with a conical surface, a steering control component, and a steering component. The connecting joints are plugged into the interface of the monitoring equipment. A sealing shell is installed on the interface of the monitoring equipment. Multiple positioning components are provided on the sealing shell. The positioning components cooperate with the conical surface to generate a squeezing motion, so that the positioning components are engaged with the positioning sleeve. The positioning sleeve is provided on the protective component. The protective component has multiple sets of limiting components on one side. The steering component is rotated by the steering control component, so that the two ends of the steering component cooperate with a set of limiting components to achieve the limiting.

[0006] Preferably, the protective component includes a protective shell, in which multiple buffer pads are disposed, the multiple buffer pads are connected to the monitoring equipment, and the protective shell has multiple heat dissipation holes.

[0007] Preferably, the protective shell has multiple wire holes on one side, and the positioning sleeve is fixedly connected to the protective shell and close to the wire holes.

[0008] Preferably, each set of limiting components includes two limiting units arranged opposite to each other. Each limiting unit includes a limiting stop and a fixing member. The two fixing members are fixedly connected to the protective shell, and one end of the two fixing members is fixedly connected to the limiting stop.

[0009] Preferably, a gap is reserved between the two limiting bars, and the limiting bars are provided with an arc-shaped surface.

[0010] Preferably, the positioning component includes a positioning rod that is adapted to the size of the positioning sleeve. The positioning rod passes through the sealing shell, and a roller is provided at one end of the positioning rod. A first spring is fixedly connected to one side of the roller, and one end of the first spring is fixedly connected to the inner wall of the sealing shell.

[0011] Preferably, the steering control assembly includes two control handles, which are respectively fixedly connected to both ends of the telescopic rod. One of the control handles overlaps with the sealing shell, and four limit brackets are fixedly connected to one side of one of the control handles. Two of the limit brackets can engage with the positioning rod, and one of the control handles is fixedly installed on the connecting joint.

[0012] Preferably, an alarm is installed on another control handle, and the other control handle is mounted on a cable. The cable is connected to a connector, and the connection between the cable and the connector is spirally arranged. An outer cylindrical shell is installed on one side of the other control handle, and multiple protruding balls are fixedly connected to the inner wall of the outer cylindrical shell.

[0013] Preferably, the steering assembly includes an inner column housing that rotates on a connecting joint. A second spring is fixedly connected between the inner column housing and another control handle. Limiting plates are fixedly connected to both sides of the inner column housing. The width of the limiting plates is less than the distance between the two limiting bars. A pulley is provided at one end of the limiting plate, and the pulley overlaps with the arc-shaped surface.

[0014] Preferably, the inner cylindrical shell has multiple arc-shaped grooves and multiple straight grooves. The arc-shaped grooves are connected to the straight grooves. A pressure sensor is installed in the straight groove. The convex ball extends into the arc-shaped groove or the straight groove. The pressure sensor is located on the moving path of the straight groove and is electrically or signal-connected to the alarm.

[0015] Compared with the prior art, the present invention provides a highly stable online power quality monitoring device, which has the following beneficial effects: 1. This highly stable online power quality monitoring device uses a steering control component to rotate and reset the steering component. This causes the pulley to travel to the arc surface, generating a squeezing motion that applies force to the connector, ensuring precise installation and improving wiring efficiency and installation accuracy. It also locks the connector, preventing loosening, poor contact, or even detachment due to external force pulling or equipment vibration. Furthermore, the cable-connection part is spiral-shaped, allowing it to move with the outer shell under stress, thus adapting to minor daily pulling and deformation and preventing damage from hard stress. Additionally, the steering control component automatically triggers an alarm when the external force increases, providing timely warnings of potential wiring loosening and facilitating timely maintenance. This ensures continuous, stable, and accurate data collection from the source of wiring.

[0016] 2. This highly stable online power quality monitoring device incorporates a buffer pad that absorbs and cushions external forces, enhancing the device's resistance to damage and extending its lifespan. During the connection process between the connector and the monitoring device interface, the connector is locked to the positioning sleeve via a conical extrusion positioning component, achieving a rigid connection between the protective shell and the internal monitoring device. This eliminates shaking and displacement gaps during device operation, preventing data fluctuations caused by device vibration and significantly improving the overall stability and accuracy of power quality monitoring during operation.

[0017] 3. This highly stable online power quality monitoring device, after being connected to the monitoring equipment interface via a connector, allows the steering control component to rotate and engage with the limit component, ensuring a stable connection between the connector and the monitoring equipment. This effectively eliminates the risks of loosening, detachment, and pulling of the connector, providing a stable signal input foundation for the intelligent sensors inside the monitoring equipment and preventing data distortion caused by line faults. The protective component not only protects the monitoring equipment but also acts as a buffer. Combined with the positioning component and positioning sleeve for locking, it ensures the monitoring equipment is collision-proof when idle and stable during operation. This protects the core intelligent sensor components from external damage and ensures the equipment remains stable and unwavering during monitoring. The two components work together to ensure signal stability through line protection, guaranteeing accurate monitoring equipment operation. This solves the technical problems of traditional monitoring devices, such as easy disconnection, easy damage, unstable data, and lack of early warning protection. It significantly improves the anti-interference capability, safety protection capability, and long-term operational stability of the online power quality monitoring device, greatly meeting the high-precision, high-reliability, and unattended online monitoring application requirements of intelligent sensing systems. Attached Figure Description

[0018] Figure 1 This is a perspective view of a highly stable online power quality monitoring device proposed in this invention; Figure 2 A perspective view of the protective components of a high-stability online power quality monitoring device proposed in this invention; Figure 3 This is a cross-sectional perspective view of the protective components of a high-stability online power quality monitoring device proposed in this invention; Figure 4 This is a cross-sectional perspective view of the protective shell of a high-stability online power quality monitoring device proposed in this invention; Figure 5 This is a three-dimensional cross-sectional view of the connection joint of a high-stability online power quality monitoring device proposed in this invention; Figure 6 This is a perspective view of the sealing shell and steering assembly of a high-stability online power quality monitoring device proposed in this invention; Figure 7 This is a perspective view of the sealing shell and positioning components of a high-stability online power quality monitoring device proposed in this invention; Figure 8 This is a partial perspective view of the protective shell of a high-stability online power quality monitoring device proposed in this invention; Figure 9 This is a three-dimensional view of a single set of limiting components of a high-stability online power quality monitoring device proposed in this invention; Figure 10This is a perspective view of the limiting component of a high-stability online power quality monitoring device proposed in this invention; Figure 11 This is a perspective view of the steering control assembly and connecting joint of a high-stability online power quality monitoring device proposed in this invention; Figure 12 This is a cross-sectional perspective view of the steering control component of a high-stability online power quality monitoring device proposed in this invention; Figure 13 This is a perspective view of the inner cylindrical shell of a high-stability online power quality monitoring device proposed in this invention; Figure 14 This is a perspective view of the outer cylindrical shell of a high-stability online power quality monitoring device proposed in this invention.

[0019] In the diagram: 100, Protective mechanism; 101, Protective component; 1011, Protective shell; 1012, Heat dissipation hole; 1013, Wiring hole; 1014, Buffer pad; 102, Steering control component; 1021, Control handle; 1022, Telescopic rod; 1023, Alarm; 1024, Outer column shell; 1025, Convex ball; 1026, Limiting bracket; 103, Limiting component; 1031, Limiting stop bar; 1032, Fixing component; 1033, Curved surface; 104. Conical surface; 105. Positioning sleeve; 106. Positioning assembly; 1061. Roller; 1062. Positioning rod; 1063. First spring; 107. Connecting joint; 108. Steering assembly; 1081. Inner cylindrical shell; 1082. Arc groove; 1083. Second spring; 1084. Pulley; 1085. Straight groove; 1086. Limiting plate; 1087. Pressure sensor; 109. Sealing shell; 110. Cable; 200. Monitoring equipment. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Example 1: Refer to Figures 1-9 and Figures 11-14A highly stable online power quality monitoring device includes a protective mechanism 100, in which a monitoring device 200 is installed; The protective mechanism 100 includes a protective component 101 and multiple connecting joints 107. Each connecting joint 107 has a conical surface 104. A steering control component 102 and a steering component 108 are also provided on the connecting joint 107. The steering control component 102 includes two control handles 1021, which are respectively fixedly connected to both ends of a telescopic rod 1022. The telescopic rod 1022 connects the two control handles 1021 together, thereby ensuring the stability of the control handles 1021 and facilitating their operation. The telescopic rod 1022 also... 022 is retractable, thus ensuring the mobility of the control handle 1021. One of the control handles 1021 overlaps with the sealing housing 109, increasing the seal between the control handle 1021 and the sealing housing 109 to prevent dust from entering the sealing housing 109. Four limit brackets 1026 are fixedly connected to one side of one of the control handles 1021. Two limit brackets 1026 can engage with the positioning rod 1062. The engagement of the two limit brackets 1026 with the positioning rod 1062 prevents the rotation of the connecting joint 107 and ensures the connection. The connector 107 is stably connected to the interface of the monitoring device 200. One control handle 1021 is fixedly mounted on the connector 107, and an alarm 1023 is mounted on the other control handle 1021. The other control handle 1021 is mounted on the cable 110, which is connected to the connector 107. The connection between the cable 110 and the connector 107 is spiral-shaped. Because the connection between the cable 110 and the connector 107 is spiral-shaped, when the cable 110 is under stress, the spiral part is stretched, preventing the cable 110 from being stretched. To prevent breakage caused by direct hard pulling, another control handle 1021 has an outer cylindrical shell 1024 installed on one side. Multiple protruding balls 1025 are fixedly connected to the inner wall of the outer cylindrical shell 1024. The connecting connector 107 is plugged into the interface of the monitoring device 200. A sealing shell 109 is installed on the interface of the monitoring device 200. Multiple positioning components 106 are provided on the sealing shell 109. The positioning components 106 cooperate with the conical surface 104 to generate a squeezing motion, so that the positioning components 106 are engaged with the positioning sleeve 105. The positioning sleeve 105 is set on the protective component 101. One side of the protective assembly 101 is provided with multiple sets of limiting assemblies 103. Each set of limiting assemblies 103 includes two limiting units arranged opposite each other. Each limiting unit includes a limiting stop 1031 and a fixing member 1032. The two fixing members 1032 are fixedly connected to the protective shell 1011. One end of the two fixing members 1032 is fixedly connected to the limiting stop 1031. A gap is reserved between the two limiting stops 1031. The limiting stop 1031 is provided with an arc-shaped surface 1033. The steering assembly 102 drives the steering assembly 1. Rotation 08 causes the two ends of the steering assembly 108 to engage with a set of limiting components 103 to achieve limiting. The steering assembly 108 includes an inner cylindrical shell 1081, which rotates on the connecting joint 107. One end of the inner cylindrical shell 1081 is provided with an annular groove, and the end of the connecting joint 107 near the inner cylindrical shell 1081 is disc-shaped. The annular groove engages with the disc-shaped part, allowing the inner cylindrical shell 1081 to rotate smoothly on the connecting joint 107 through the annular groove. The inner cylindrical shell 1081 is fixedly connected to another control handle 1021. A second spring 1083 is provided. Limiting plates 1086 are fixedly connected to both sides of the inner cylindrical shell 1081. The width of the limiting plates 1086 is less than the distance between the two limiting stops 1031. When the gaps between the limiting plates 1086 and the limiting stops 1031 correspond, the connecting connector 107 can be precisely inserted into the interface of the monitoring device 200. A pulley 1084 is provided at one end of the limiting plate 1086, and the pulley 1084 overlaps with the arc-shaped surface 1033. Multiple arc-shaped grooves 1082 and multiple straight grooves 1082 are provided on the inner cylindrical shell 1081. 085, the arc groove 1082 is connected to the straight groove 1085. When the convex ball 1025 enters the straight groove 1085, the cable 110 is subjected to force, which can drive the outer cylindrical shell 1024 and the convex ball 1025 to move directly, so that the cable 110 has a buffer space. A pressure sensor 1087 is installed in the straight groove 1085. The convex ball 1025 extends into the arc groove 1082 or the straight groove 1085. The pressure sensor 1087 is set on the moving path of the straight groove 1085 and is electrically or signal connected to the alarm 1023.

[0023] In this embodiment: by plugging the connector 107 into the interface of the monitoring device 200, after plugging, the second spring 1083 drives the outer cylindrical shell 1024 to move, and the outer cylindrical shell 1024 drives the convex ball 1025 to move. The convex ball 1025 cooperates with the arc groove 1082 to realize the rotation of the inner cylindrical shell 1081. The inner cylindrical shell 1081 drives the limiting plate 1086 to move, and the limiting plate 1086 drives the pulley 1084 to move, so that the pulley 1084 travels through the limiting stop 1031 to the arc surface 1033 and generates a squeezing motion with the arc surface 1033. In this way, a force can be applied to the connector 107 to ensure that the connector 107 is accurately installed, thereby improving wiring efficiency and installation accuracy. Simultaneously, the connector 107 can be locked to prevent the cable 110 from becoming loose, having poor contact, or even falling off due to external force pulling or equipment vibration. The connection between the cable 110 and the connector 107 is spiral-shaped, which can move with the outer shell 1024 when under force, thus adapting to minor daily pulling deformation and preventing damage to the cable 110 from hard force. When the external force increases or continues, the convex ball 1025 squeezes the pressure sensor 1087, thereby triggering the alarm 1023 to provide timely warning of potential loose wiring, facilitating timely inspection and maintenance by staff, and ensuring continuous, stable, and accurate data acquisition by the intelligent sensor from the source of wiring.

[0024] Example 2: Refer to Figures 2-3 , Figure 6 and Figure 10 A high-stability online power quality monitoring device includes a protective component 101, which includes a protective shell 1011. Multiple buffer pads 1014 are provided in the protective shell 1011. The buffer pads 1014 can be rubber vibration damping pads or spring dampers, which can buffer and absorb energy when the monitoring device 200 is subjected to impact, thus protecting the monitoring device 200. The multiple buffer pads 1014 are connected to the monitoring device 200. Multiple heat dissipation holes 1012 are provided on the protective shell 1011 to ensure airflow between the interior space of the protective shell 1011 and the outside air, thereby ensuring the heat dissipation effect of the monitoring device 200. Multiple wire holes 1013 are provided on one side of the protective shell 1011 to ensure that the connecting connector 107 can pass smoothly through the wire holes 1013 and be inserted into the interface of the monitoring device 200. A positioning sleeve 105 is fixedly connected to the protective shell 1011 and close to the wire holes 1013. The positioning assembly 106 includes a positioning rod 1062, which is adapted to the size of the positioning sleeve 105. The positioning rod 1062 passes through the sealing shell 109. A roller 1061 is provided at one end of the positioning rod 1062. A first spring 1063 is fixedly connected to one side of the roller 1061. One end of the first spring 1063 is fixedly connected to the inner wall of the sealing shell 109.

[0025] In this embodiment: By setting a buffer pad 1014, the buffer pad 1014 can buffer and absorb external forces, improving the damage resistance and service life of the monitoring device 200. During the process of connecting the connector 107 and the interface of the monitoring device 200, the connector 107 squeezes the roller 1061 through the conical surface 104. The roller 1061 drives the positioning rod 1062 to move, so that the positioning rod 1062 locks with the positioning sleeve 105, realizing a rigid connection between the protective shell 1011 and the internal monitoring device 200, eliminating the shaking and displacement gaps of the monitoring device 200 during operation, avoiding the fluctuation of monitoring data caused by the shaking of the monitoring device 200, and significantly improving the overall stability and power quality monitoring accuracy of the device under working conditions.

[0026] Example 3: Reference Figures 1-6 A highly stable online power quality monitoring device includes a protective mechanism 100, which includes a protective component 101 and multiple connecting joints 107. A conical surface 104 is provided on each connecting joint 107. A steering control component 102 and a steering component 108 are also provided on each connecting joint 107. The connecting joint 107 is plugged into the interface of a monitoring device 200. A sealing shell 109 is installed on the interface of the monitoring device 200. Multiple positioning components 106 are provided on the sealing shell 109. The positioning components 106 cooperate with the conical surface 104 to generate a squeezing motion, causing the positioning components 106 to engage with a positioning sleeve 105. The positioning sleeve 105 is disposed on the protective component 101. Multiple sets of limiting components 103 are provided on one side of the protective component 101.

[0027] In this embodiment: after the connector 107 is plugged into the interface of the monitoring device 200, the steering control component 102 drives the steering component 108 to rotate and complete the limit component 103 to complete the limit, ensuring a stable connection between the connector 107 and the monitoring device 200. This effectively eliminates the problems of loosening, falling off, and pulling of the connector 107, providing a stable signal input foundation for the intelligent sensors inside the monitoring device 200 and avoiding data distortion caused by line faults. The protective component 101 not only protects the monitoring device 200 but also acts as a buffer, while working in conjunction with the positioning component 106. Locking with the positioning sleeve 105 ensures that the monitoring equipment 200 is protected from collisions when idle and remains stable during operation. This protects the core intelligent sensor components from external damage and ensures that the equipment remains stable and without shaking or deviation during monitoring. The two work together to ensure signal stability through line protection, guaranteeing the accurate operating condition of the monitoring equipment 200. This solves the technical problems of traditional monitoring devices, such as easy disconnection, easy damage, unstable data, and lack of early warning protection. It significantly improves the anti-interference capability, safety protection capability, and long-term operational stability of the online power quality monitoring device, greatly meeting the needs of intelligent sensing systems for high-precision, high-reliability, and unattended online monitoring applications.

[0028] Working principle: When using the monitoring device 200, the two control handles 1021 are pre-combined, causing the second spring 1083 to deform. Simultaneously, the outer cylindrical shell 1024 drives the convex ball 1025 to move. The convex ball 1025, in conjunction with the arc surface of the arc groove 1082, drives the inner cylindrical shell 1081 to rotate. The inner cylindrical shell 1081 drives the limiting plate 1086 to rotate, aligning the limiting plate 1086 with the pre-reserved gap of the limiting stop 1031. At this time, the connecting connector 107 can be plugged into the interface of the monitoring device 200. During the plugging process, the connecting connector 107, through the conical surface 104, can press the roller 1061 to move. The roller 1061 drives the positioning rod 106. 2. Move, positioning rod 1062 is inserted into positioning sleeve 105, so that protective shell 1011 is rigidly connected to monitoring equipment 200. At the same time, limit frame 1026 is engaged with positioning rod 1062. After insertion, the second spring 1083 drives the outer column shell 1024 to reset, so that the convex ball 1025 re-engages with arc groove 1082 during the reset process, so that limit plate 1086 drives pulley 1084 to move onto limit stop 1031. At the same time, after pulley 1084 moves to arc surface 1033, it can generate extrusion force, so that connecting joint 107 and monitoring equipment 200 are accurately installed in place. At this time, convex ball 1025 moves into straight groove 1085. When the cable 110 is under tension, the cable 110 pulls the control handle 1021, which in turn moves the outer cylindrical shell 1024, causing the convex ball 1025 to move in the straight groove 1085. This ensures that the cable 110 has slight pulling activity. When the external force is greater, the convex ball 1025 squeezes the pressure sensor 1087. At this time, the pressure sensor 1087 controls the alarm 1023 to sound an alarm, effectively reminding maintenance personnel to perform inspection or maintenance.

[0029] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-stability online power quality monitoring device, comprising a protective mechanism (100), characterized in that, The protective mechanism (100) is equipped with monitoring equipment (200); The protective mechanism (100) includes a protective component (101) and multiple connecting joints (107). The connecting joints (107) are provided with a conical surface (104), a steering control component (102) and a steering component (108) are provided on the connecting joints (107), the connecting joints (107) are plugged into the interface of the monitoring device (200), a sealing shell (109) is installed on the interface of the monitoring device (200), and multiple positioning components (106) are provided on the sealing shell (109). The positioning components (106) cooperate with the conical surface (104) to generate a squeezing motion, so that the positioning components (106) engage with the positioning sleeve (105). The positioning sleeve (105) is provided on the protective component (101). The protective component (101) has multiple sets of limiting components (103) on one side. The steering component (108) is rotated by the steering control component (102), so that the two ends of the steering component (108) cooperate with a set of limiting components (103) to achieve limiting.

2. The high-stability online power quality monitoring device according to claim 1, characterized in that, The protective component (101) includes a protective shell (1011), in which a plurality of buffer pads (1014) are provided, the plurality of buffer pads (1014) are connected to the monitoring device (200), and a plurality of heat dissipation holes (1012) are provided on the protective shell (1011).

3. The high-stability online power quality monitoring device according to claim 2, characterized in that, The protective shell (1011) has multiple wire holes (1013) on one side, and the positioning sleeve (105) is fixedly connected to the protective shell (1011) and close to the wire holes (1013).

4. The high-stability online power quality monitoring device according to claim 2, characterized in that, Each set of limiting components (103) includes two limiting units arranged opposite to each other. Each limiting unit includes a limiting stop (1031) and a fixing member (1032). The two fixing members (1032) are fixedly connected to the protective shell (1011), and one end of the two fixing members (1032) is fixedly connected to the limiting stop (1031).

5. The high-stability online power quality monitoring device according to claim 4, characterized in that, A gap is reserved between the two limiting bars (1031), and an arc-shaped surface (1033) is provided on the limiting bars (1031).

6. The high-stability online power quality monitoring device according to claim 5, characterized in that, The positioning component (106) includes a positioning rod (1062), which is adapted to the size of the positioning sleeve (105). The positioning rod (1062) passes through the sealing shell (109). A roller (1061) is provided at one end of the positioning rod (1062). A first spring (1063) is fixedly connected to one side of the roller (1061). One end of the first spring (1063) is fixedly connected to the inner wall of the sealing shell (109).

7. The high-stability online power quality monitoring device according to claim 6, characterized in that, The steering control assembly (102) includes two control handles (1021), which are fixedly connected to both ends of the telescopic rod (1022). One of the control handles (1021) overlaps with the sealing shell (109). Four limit brackets (1026) are fixedly connected to one side of one of the control handles (1021). Two of the limit brackets (1026) can engage with the positioning rod (1062). One of the control handles (1021) is fixedly installed on the connecting joint (107).

8. The high-stability online power quality monitoring device according to claim 7, characterized in that, An alarm (1023) is installed on another control handle (1021). The other control handle (1021) is mounted on a cable (110). The cable (110) is connected to a connector (107), and the connection between the cable (110) and the connector (107) is spirally arranged. An outer cylindrical shell (1024) is installed on one side of the other control handle (1021). A plurality of protruding balls (1025) are fixedly connected to the inner wall of the outer cylindrical shell (1024).

9. The high-stability online power quality monitoring device according to claim 8, characterized in that, The steering assembly (108) includes an inner cylindrical shell (1081) that rotates on a connecting joint (107). A second spring (1083) is fixedly connected between the inner cylindrical shell (1081) and another control handle (1021). Limiting plates (1086) are fixedly connected to both sides of the inner cylindrical shell (1081). The width of the limiting plate (1086) is less than the distance between two limiting stops (1031). A pulley (1084) is provided at one end of the limiting plate (1086), and the pulley (1084) overlaps with the arc-shaped surface (1033).

10. A high-stability online power quality monitoring device according to claim 9, characterized in that, The inner cylindrical shell (1081) is provided with a plurality of arc-shaped grooves (1082) and a plurality of straight grooves (1085). The arc-shaped grooves (1082) and the straight grooves (1085) are connected. A pressure sensor (1087) is provided in the straight groove (1085). The convex ball (1025) extends into the arc-shaped groove (1082) or the straight groove (1085). The pressure sensor (1087) is located on the moving path of the straight groove (1085) and is electrically or signal connected to the alarm (1023).

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