A cable fault early warning device
Patent Information
- Application Number
- CN202522241206.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-10-23
AI Technical Summary
[0003]有鉴于此，本实用新型提供一种电缆故障预警装置，可通过锁紧机构实现上下机体两侧同步夹持，有效解决了传统单侧丝杆锁紧导致的受力不均及易松动问题，显著提升了装置安装的结构稳定性与环境适应性，保障了故障预警的长期可靠性
1、相关工作人员旋转锁紧丝杆，从而将底机体和上机体打开，然后操作人员，将操纵杆与底机体下端的卡槽处卡紧，随后将底机体及其附属机构移动至电缆处，随即将装置悬挂于电缆上，然后通过转动锁紧丝杆驱动上机体沿底机体的矩形杆向下滑动，从而夹持住电缆，实现初步定位。
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Figure CN224906952U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cable fault early warning technology, and specifically relates to a cable fault early warning device. Background Technology
[0002] With the rapid development of urban power grids and industrial power systems, high-voltage cables, as the core component of power transmission, are directly related to the reliability of power supply and public safety. However, cables are prone to failure due to insulation aging, partial discharge, overload or external environmental stress during long-term operation. This can cause partial power outages or even equipment damage or safety hazards. Therefore, it is necessary to use special cable fault early warning devices. Currently, cable fault early warning devices typically use a mechanical clamping structure fixed to the cable surface, often employing a single-sided screw drive design. The cable is clamped by rotating the screw to push the pressure plate down. However, this type of structure has certain drawbacks: because the single-sided screw structure applies force only on one side, it is prone to uneven distribution of cable clamping force, which may lead to structural deformation or loosening under long-term operation. Utility Model Content
[0003] In view of this, the present invention provides a cable fault early warning device, which can achieve synchronous clamping of both sides of the upper and lower body through a locking mechanism, effectively solving the problems of uneven force and easy loosening caused by traditional single-sided screw locking, significantly improving the structural stability and environmental adaptability of the device installation, and ensuring the long-term reliability of fault early warning.
[0004] To solve the above-mentioned technical problems, this utility model provides a cable fault early warning device, including a fault early warning unit for early warning of cable faults. The fault early warning unit includes a base body, with rectangular rods at both ends of one side of the base body. An upper body is slidably connected between the two rectangular rods. A locking mechanism is provided between the base body and the upper body. The locking mechanism includes a locking screw rotatably connected to the middle of the base body near the rectangular rods. The locking screw is threadedly connected to a corresponding threaded hole on the upper body. A rectangular cavity is provided on the side of the base body away from the locking screw, and a sliding mechanism is slidably connected within the rectangular cavity. The pressure plate and the base body are also equipped with a transmission component for driving the sliding pressure plate to move. The lower end of the upper body is equipped with a relief cavity that matches the moving trajectory of the sliding pressure plate. A fixing block is provided at the outer end of the relief cavity. The end of the fixing block near the sliding pressure plate is inclined. The end of the sliding pressure plate moves against the inclined surface of the fixing block. That is, the locking mechanism realizes the synchronous clamping of the upper and lower bodies on both sides, which effectively solves the problem of uneven force and easy loosening caused by traditional single-sided screw locking. It significantly improves the structural stability and environmental adaptability of the device installation and ensures the long-term reliability of fault early warning. The transmission assembly includes a sliding plate slidably connected to the lower end of the rectangular cavity, and a lead screw rotatably connected to the inner end of the lower end of the rectangular cavity. The lead screw is threadedly connected to a threaded hole provided on the sliding plate, which serves to achieve rapid driving.
[0005] The transmission assembly also includes an annular cavity located near the lower end of the locking screw in the base body. The locking screw has a beveled tooth ring on the outer arc surface inside the annular cavity. The screw passes through a corresponding rotating hole on the inner arc surface of the annular cavity and extends into it. A gear is provided at the end of the screw inside the annular cavity. The gear meshes with the beveled tooth ring, thus achieving synchronous linkage.
[0006] It also includes an anti-loosening component, which includes a connector that is slidably connected to the lower end of the locking screw. A ratchet ring one is provided at the bottom of the machine body near the lower end opening of the locking screw, and a ratchet ring two is provided on the stepped surface of the connector. The ratchet ring two and the ratchet ring one are movably engaged. The connector, ratchet ring two, ratchet ring one and the locking screw are coaxial, which plays the role of preventing loosening.
[0007] The anti-loosening component also includes a rectangular groove at the upper end of the connector, and a spring is provided between the rectangular groove and the top wall of the lower end slide of the locking screw to provide elastic reset.
[0008] The fault warning unit also includes a traveling wave sensor at one end of the base and a voltage and current sensor at the other end of the base, which can capture the high-frequency transient traveling wave signal generated by the line fault in real time and collect power frequency voltage and current data.
[0009] The fault warning unit also includes a data transmitter installed in the upper body, which can transmit the detected data.
[0010] The fault warning unit also includes a solar panel installed on the upper part of the upper body. An inverter is installed inside the upper body. The solar panel can convert solar energy into electrical energy, and the inverter can realize efficient energy conversion and stable output, supporting long-term maintenance-free operation in the field.
[0011] The beneficial effects of the above-mentioned technical solution of this utility model are as follows: 1. The relevant personnel rotate the locking screw to open the bottom and upper machine bodies. Then, the operator locks the control lever into the slot at the lower end of the bottom machine body. The bottom machine body and its auxiliary mechanisms are then moved to the cable. The device is then suspended on the cable. The upper machine body is then driven to slide down along the rectangular rod of the bottom machine body by rotating the locking screw, thereby clamping the cable and achieving initial positioning.
[0012] 2. The locking screw synchronously pushes the sliding pressure plate laterally through the transmission assembly, eventually engaging with the inclined surface of the fixed block inside the upper body. When the bottom and upper bodies are closed, the sliding pressure plate moves synchronously to the designated position under the inclined guidance of the fixed block. The sliding pressure plate generates vertical downward pressure by engaging with the inclined surface of the fixed block, causing the bottom and upper bodies to apply pressure synchronously on both sides to lock the cable. This achieves synchronous clamping and locking of both sides of the bottom and upper bodies. The synchronous clamping of both sides of the upper and lower bodies is achieved through the linkage transmission assembly of the locking screw, effectively solving the problems of uneven force and easy loosening caused by traditional single-sided screw locking. This significantly improves the structural stability and environmental adaptability of the device installation and ensures the long-term reliability of fault early warning.
[0013] 3. The bevel gear ring at the end of the locking screw meshes with the gear on the screw, thereby driving the screw to rotate synchronously. When the screw rotates, it pushes the sliding pressure plate to move laterally through the sliding plate, thereby achieving a synchronous linkage effect and ensuring that both work in sync.
[0014] 4. The tooth surface of ratchet ring two contacts and slides with the inclined guide surface of ratchet ring one. During this process, it overcomes the preload of the spring to achieve tooth position avoidance. This mechanical interlocking process repeats with each rotation of the locking screw. When tightened, ratchet ring one and ratchet ring two are fully engaged, forming a mechanical lock that resists reverse rotation, effectively preventing loosening caused by long-term vibration or temperature changes. If it is necessary to release the clamp, the operator needs to pull down the connector to overcome the spring resistance, forcing the two ratchet rings to separate. Then, rotating the locking screw counterclockwise will reset and unlock the device. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the main structure of a cable fault early warning device according to the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is an enlarged structural diagram of point A in this utility model; Figure 4 This is an enlarged structural diagram of point B in this utility model; Figure 5 This is a partial cross-sectional view of the present invention.
[0016] Explanation of reference numerals in the attached drawings: 100, base body; 101, rectangular rod; 102, upper body; 103, traveling wave sensor; 104, data transmitter; 105, solar panel; 106, inverter; 107, voltage and current sensor; 200, locking screw; 201, rectangular cavity; 202, sliding pressure plate; 203, clearance cavity; 204, fixing block; 300, sliding plate; 301, screw; 302, annular cavity; 303, bevel gear ring; 304, gear; 400, connector; 401, ratchet ring one; 402, ratchet ring two; 403, rectangular groove; 404, spring. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-5 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.
[0018] This embodiment provides a cable fault early warning device, such as... Figure 1-5 The diagram shows a fault warning unit for cable fault detection. The fault warning unit includes a base body 100, with rectangular rods 101 at both ends of one side. An upper body 102 is slidably connected between the two rectangular rods 101. The fault warning unit also includes a traveling wave sensor 103 at one end of the base body 100 and a voltage / current sensor 107 at the other end. The fault warning unit also includes a data transmitter 104 within the upper body 102 and a solar panel 105 at the top of the upper body 102. An inverter 106 is located within the upper body 102. A locking mechanism is provided between the base body 100 and the upper body 102. The locking mechanism includes… A locking screw 200 is rotatably connected to the middle of the base body 100 near the rectangular rod 101. The locking screw 200 is threadedly connected to a corresponding threaded hole on the upper body 102. A rectangular cavity 201 is provided on the side of the base body 100 away from the locking screw 200. A sliding pressure plate 202 is slidably connected in the rectangular cavity 201. A transmission assembly for driving the sliding pressure plate 202 to move is also provided on the base body 100. A clearance cavity 203 is provided at the lower end of the upper body 102, which matches the movement trajectory of the sliding pressure plate 202. A fixing block 204 is provided at the outer end of the clearance cavity 203. The end of the fixing block 204 near the sliding pressure plate 202 is inclined. The end of the sliding pressure plate 202 is in contact with the inclined surface of the fixing block 204.
[0019] The cable fault early warning device uses a traveling wave sensor 103 to capture high-frequency transient traveling wave signals generated during line faults in real time. Combined with a voltage and current sensor 107, it synchronously collects power frequency voltage and current data. The detected data is then transmitted to a terminal data processing unit via a data transmitter 104. By comparing the data with a preset fault feature database, it achieves early warning and precise fault location. The traveling wave sensor 103 can be of model such as HWR-10B, the voltage and current sensor 107 can be of model such as VT-200 / CT-300, the data transmitter 104 supports 4G / APN private network communication, the solar panel 105 can be of model such as SP-100W, and the inverter 106 can be of model such as INV-24V / 220V. The solar panel 105 and the CT share a power supply, and the inverter 106 achieves efficient energy conversion and stable output, supporting long-term maintenance-free operation in the field. This utility model optimizes the structure without altering the core judgment logic of the fault early warning, aiming to optimize the device structure based on existing fault early warning functions.
[0020] First, the relevant personnel rotate the locking screw 200 to open the bottom body 100 and the upper body 102. Then, the operator engages the control lever with the slot at the lower end of the bottom body 100. Next, the bottom body 100 and its auxiliary mechanisms are moved to the cable location, and the device is then suspended on the cable. The upper body 102 is then driven to slide downwards along the rectangular rod 101 of the bottom body 100 by rotating the locking screw 200, thereby clamping the cable and achieving initial positioning. Simultaneously, the locking screw 200 synchronously pushes the sliding pressure plate 202 laterally through the transmission assembly, ultimately engaging it with the inclined surface of the fixing block 204 inside the upper body 102. When the bottom body 100 and the upper body 102 are closed, the sliding pressure plate 202 moves synchronously under the inclined guidance of the fixing block 204. Upon reaching the designated position, the sliding pressure plate 202 engages with the inclined surface of the fixed block 204 to generate vertical downward pressure, causing the bottom body 100 and the upper body 102 to simultaneously apply pressure and lock the cable. This achieves synchronous clamping and locking of both sides of the bottom body 100 and the upper body 102. The locking screw 200 and linkage transmission assembly achieve synchronous clamping of both sides of the upper and lower bodies, effectively solving the problems of uneven force and easy loosening caused by traditional single-sided screw locking. This significantly improves the structural stability and environmental adaptability of the device installation and ensures the long-term reliability of fault warning. Subsequently, the traveling wave sensor 103 and the voltage and current sensor 107 monitor the cable data in real time and transmit it to the terminal via the data transmitter 104 to realize cable fault warning. The solar panel 105 and the inverter 106 cooperate to provide power.
[0021] like Figure 2-4As shown, the transmission assembly includes a sliding plate 300 slidably connected to the lower end of a rectangular cavity 201. A lead screw 301 is rotatably connected to the inner end of the lower end of the rectangular cavity 201. The lead screw 301 is threadedly connected to a threaded hole provided on the sliding plate 300. The transmission assembly also includes an annular cavity 302 provided on the bottom body 100 near the lower end of the locking lead screw 200. A beveled ring 303 is provided on the outer arc surface of the locking lead screw 200 within the annular cavity 302. The lead screw 301 passes through a corresponding rotating hole provided on the inner arc surface of the annular cavity 302 and extends into it. A gear 304 is provided at the end of the lead screw 301 within the annular cavity 302. The gear 304 meshes with the beveled ring 303.
[0022] At the same time, the bevel ring 303 at the end of the locking screw 200 meshes with the gear 304 on the screw 301, thereby driving the screw 301 to rotate synchronously. When the screw 301 rotates, it pushes the sliding pressure plate 202 to move laterally through the sliding plate 300, thereby achieving a synchronous linkage effect and ensuring that the two work in sync.
[0023] like Figure 2-4 As shown, it also includes an anti-loosening component, which includes a connector 400 slidably connected to the lower end slide opening of the locking screw 200. The base body 100 is provided with a ratchet ring 401 near the lower end opening of the locking screw 200. A second ratchet ring 402 is provided on the stepped surface of the connector 400. The second ratchet ring 402 is movably engaged with the first ratchet ring 401. The connector 400, the second ratchet ring 402, the first ratchet ring 401 and the locking screw 200 are coaxial. The anti-loosening component also includes a rectangular groove 403 provided at the upper end of the connector 400. A spring 404 is provided between the rectangular groove 403 and the top wall of the lower end slide opening of the locking screw 200.
[0024] During rotation, the tooth surface of ratchet ring 2 402 contacts and slides with the inclined guide surface of ratchet ring 1 401. In this process, the preload of spring 404 is overcome to achieve tooth position avoidance. This mechanical interlocking process repeats with each rotation of locking screw 200. When tightened, ratchet ring 1 401 and ratchet ring 2 402 are fully engaged, forming a mechanical lock that resists reverse rotation, effectively preventing loosening caused by long-term vibration or temperature changes. If it is necessary to release the clamp, the operator needs to pull down the connector 400 to overcome the spring resistance and force the two ratchet rings to separate. Then, rotating locking screw 200 counterclockwise will reset and unlock the device.
[0025] The working principle of the cable fault early warning device provided by this utility model is as follows: First, the relevant personnel rotate the locking screw 200 to open the bottom body 100 and the upper body 102. Then, the operator locks the control lever into the slot at the lower end of the bottom body 100. Subsequently, the bottom body 100 and its auxiliary mechanisms are moved to the cable. The device is then suspended on the cable. Then, by rotating the locking screw 200, the upper body 102 is driven to slide downward along the rectangular rod 101 of the bottom body 100, thereby clamping the cable and achieving initial positioning. At the same time, the bevel teeth at the end of the locking screw 200... Ring 303 meshes with gear 304 on lead screw 301, thereby driving lead screw 301 to rotate synchronously. When lead screw 301 rotates, it pushes sliding pressure plate 202 laterally via sliding plate 300, eventually engaging with the inclined surface of fixed block 204 inside upper body 102. When bottom body 100 and upper body 102 are closed, sliding pressure plate 202 moves synchronously to the designated position under the inclined guidance of fixed block 204. The sliding pressure plate 202 generates vertical downward pressure through its engagement with the inclined surface of fixed block 204, causing simultaneous pressure application and locking of both sides of bottom body 100 and upper body 102. The cable is clamped and locked synchronously on both sides of the bottom body 100 and the upper body 102 through the locking screw 200 linkage transmission assembly. This effectively solves the problems of uneven force and easy loosening caused by traditional single-sided screw locking, significantly improving the structural stability and environmental adaptability of the device installation, and ensuring the long-term reliability of fault early warning. Subsequently, the traveling wave sensor 103 and voltage and current sensor 107 monitor the cable data in real time, and transmit it to the terminal via the data transmitter 104 to realize cable fault early warning. The solar panel 105 works with the inverter 106 to realize power supply. During rotation, the tooth surface of ratchet ring 2 402 contacts and slides with the inclined guide surface of ratchet ring 1 401. In this process, the preload of spring 404 is overcome to achieve tooth position avoidance. This mechanical interlocking process repeats with each rotation of locking screw 200. When tightened, ratchet ring 1 401 and ratchet ring 2 402 are fully engaged, forming a mechanical lock that resists reverse rotation, effectively preventing loosening caused by long-term vibration or temperature change. If it is necessary to release the clamp, the operator needs to pull down the connector 400 to overcome the spring resistance and force the two ratchet rings to separate. Then, rotating locking screw 200 counterclockwise will reset and unlock the device.
[0026] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0027] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
Claims
1. A cable fault early warning device, characterized in that: The system includes a fault warning unit for cable fault warning. The fault warning unit comprises a base body (100) with rectangular rods (101) at both ends of one side. An upper body (102) is slidably connected between the two rectangular rods (101). A locking mechanism is provided between the base body (100) and the upper body (102). The locking mechanism includes a locking screw (200) rotatably connected to the middle of the base body (100) near the rectangular rods (101). The locking screw (200) is threadedly connected to a corresponding threaded hole on the upper body (102). The base body (100) is located away from the locking mechanism. A rectangular cavity (201) is provided on one side of the tension screw (200), and a sliding pressure plate (202) is slidably connected in the rectangular cavity (201). A transmission assembly for driving the sliding pressure plate (202) to move is provided on the bottom body (100). A clearance cavity (203) that matches the moving trajectory of the sliding pressure plate (202) is provided at the lower end of the upper body (102). A fixing block (204) is provided at one end of the clearance cavity (203) near the outside. The end of the fixing block (204) near the sliding pressure plate (202) is inclined. The end of the sliding pressure plate (202) is in contact with the inclined surface of the fixing block (204).
2. The cable fault early warning device as described in claim 1, characterized in that: The transmission assembly includes a sliding plate (300) slidably connected to the lower end of the rectangular cavity (201), and a lead screw (301) is rotatably connected to the inner end of the lower end of the rectangular cavity (201). The lead screw (301) is threadedly connected to a threaded hole provided on the sliding plate (300).
3. The cable fault early warning device as described in claim 1, characterized in that: The transmission assembly also includes an annular cavity (302) located on the bottom body (100) near the lower end of the locking screw (200). The locking screw (200) is provided with a bevel ring (303) on the outer arc surface of the annular cavity (302). The screw (301) passes through the corresponding rotating hole on the inner arc surface of the annular cavity (302) and extends into it. The end of the screw (301) located in the annular cavity (302) is provided with a gear (304), and the gear (304) meshes with the bevel ring (303).
4. The cable fault early warning device as described in claim 1, characterized in that: It also includes an anti-loosening component, which includes a connector (400) slidably connected to the lower end of the locking screw (200). The base body (100) is provided with a ratchet ring one (401) near the lower end opening of the locking screw (200). A ratchet ring two (402) is provided on the stepped surface of the connector (400). The ratchet ring two (402) is movably engaged with the ratchet ring one (401). The connector (400), ratchet ring two (402), ratchet ring one (401) and the locking screw (200) are coaxial.
5. A cable fault early warning device as described in claim 4, characterized in that: The anti-loosening component also includes a rectangular groove (403) disposed on the upper end of the connector (400), and a spring (404) is provided between the rectangular groove (403) and the top wall of the lower end slide of the locking screw (200).
6. The cable fault early warning device as described in claim 1, characterized in that: The fault warning unit also includes a traveling wave sensor (103) disposed at one end of the base body (100), and a voltage and current sensor (107) disposed at the other end of the base body (100).
7. A cable fault early warning device as described in claim 1, characterized in that: The fault warning unit also includes a data transmitter (104) installed in the upper body (102).
8. A cable fault early warning device as described in claim 1, characterized in that: The fault warning unit also includes a solar panel (105) installed on the upper part of the upper body (102), and an inverter (106) is installed inside the upper body (102).