Fireproof coating device and coating application method for cables that can be operated on live wires

Abstract

This invention discloses a cable fire-resistant coating device and coating application method capable of live-line operation, comprising a main unit housing a power supply and a control unit; a crawling mechanism, a cleaning mechanism, and a coating mechanism, all electrically connected to the control unit, are mounted on the top of the main unit housing. The crawling mechanism can be clamped onto the cable and drive the main unit housing to crawl along the cable; the cleaning mechanism can clean the cable surface; and the coating mechanism can apply fire-resistant material to the cable surface. This coating device can autonomously crawl along the cable without requiring a ground-based robotic arm for support, making it applicable regardless of the overhead height of the live cable. It also features a compact size and ease of use.

Description

Technical Field

[0001] This application relates to the technical field of lead frame, and more particularly to a cable fireproof coating device and coating application method that can be operated while energized. Background Technology

[0002] After prolonged use, the fireproof layer on the outer surface of outdoor overhead cables gradually wears away. To ensure cable safety, a new fireproof layer needs to be recoated to form on the cable's outer surface. Chinese patent CN117160937A provides a robot for coating the surface of live cables, which includes a cleaning mechanism and a coating nozzle. During use, the cleaning mechanism removes dust from the cable surface, and the coating nozzle applies fireproof coating to the cable surface for good adhesion. However, this solution has certain drawbacks: the cleaning mechanism and coating nozzle are mounted on a rectangular mounting plate, which in turn is mounted on the robot's robotic arm. During use, the robot arm can only be carried by a ground-based carrier. The carrier's height is generally limited, and when the overhead cable is high, a longer robotic arm is required to reach the cable. In this case, the robotic arm is bulky and difficult to load. Summary of the Invention

[0003] The purpose of this invention is to provide a cable fireproof coating device and coating application method that can be used for live-line work, which can solve the above-mentioned problems existing in the prior art.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] On the one hand, a cable fireproof coating device capable of live operation is provided, including a main unit housing, which houses a power supply and a control unit; a crawling mechanism, a cleaning mechanism, and a coating mechanism, all electrically connected to the control unit, are installed on the top of the main unit housing; the crawling mechanism can be clamped onto the cable and drive the main unit housing to crawl along the cable; the cleaning mechanism can clean the cable surface; and the coating mechanism can apply fireproof material to the cable surface.

[0006] Optionally, the coating mechanism includes a coating nozzle and a coating rotation drive assembly. The coating rotation drive assembly is equipped with two opposing coating nozzles. The coating rotation drive assembly can drive the two coating nozzles to reciprocate around the cable with a rotation angle of not less than 180°.

[0007] Optionally, the paint rotation drive assembly includes a paint rotation mounting base, a paint rotation arc plate, and a paint rotation drive motor. The paint rotation mounting base is mounted on the main unit housing, the paint rotation arc plate is rotatably mounted on the paint rotation mounting base, and the paint rotation drive motor is connected to the paint rotation arc plate, enabling the paint rotation arc plate to perform a reciprocating rotation with a rotation angle of not less than 180°. The two paint nozzles are mounted opposite each other on the inner side of the paint rotation arc plate.

[0008] Optionally, the distance between the paint nozzle and the arc center of the paint rotating arc plate is adjustable; the main unit is provided with a liftable paint lifting seat, and the paint rotating mounting seat is installed on the paint lifting seat.

[0009] Optionally, the cleaning mechanism includes a cleaning nozzle and a cleaning rotation drive assembly. The cleaning rotation drive assembly is equipped with two opposing cleaning nozzles, and the cleaning rotation drive assembly can drive the two cleaning nozzles to reciprocate around the cable with a rotation angle of not less than 180°.

[0010] Optionally, the cleaning rotation drive assembly includes a cleaning rotation mounting base, a cleaning rotation arc plate, and a cleaning rotation drive motor. The cleaning rotation mounting base is mounted on the main unit housing, the cleaning rotation arc plate is rotatably mounted on the cleaning rotation mounting base, and the cleaning rotation drive motor is connected to the cleaning rotation arc plate, enabling the cleaning rotation arc plate to perform a reciprocating rotation with a rotation angle of not less than 180°. The two cleaning nozzles are mounted opposite each other on the inner side of the cleaning rotation arc plate.

[0011] Optionally, the distance between the cleaning nozzle and the arc center of the cleaning rotating arc plate is adjustable; the main unit is provided with a height-adjustable cleaning lifting seat, and the cleaning rotating mounting seat is installed on the cleaning lifting seat.

[0012] Optionally, the crawling mechanism includes an upper roller, a lower roller, a crawling drive motor, and a clamping drive assembly. The crawling drive motor is connected to either the upper roller or the lower roller. The upper roller is mounted on the clamping drive assembly, which can move the upper roller between a clamping position and an obstacle avoidance position. In the clamping position, the upper roller is located directly above the lower roller and can cooperate with the lower roller to clamp the cable. In the obstacle avoidance position, the upper roller is offset from directly above the lower roller to avoid obstacles above the cable.

[0013] Optionally, the main unit chassis is provided with three crawling mechanisms at intervals. Each crawling mechanism includes a crawling fixing base, a first electromagnet, and a second electromagnet. The crawling fixing base is fixedly installed on the main unit chassis. The first electromagnet is installed on the top of the crawling fixing base, and the lower roller is rotatably installed on the telescopic end of the first electromagnet. The clamping drive assembly includes a clamping arc plate and a clamping drive motor. The clamping arc plate is rotatably installed on the crawling fixing base, and the clamping drive motor is driven by the clamping arc plate to drive the clamping arc plate to rotate. The second electromagnet is installed on the inner side of the clamping arc plate, and the upper roller is rotatably installed on the telescopic end of the second electromagnet.

[0014] On the other hand, a coating application method based on the above-mentioned live-line working cable fireproof coating device is provided, comprising: a crawling mechanism clamped on the cable rolls forward along the cable, a cleaning mechanism continuously cleans the cable surface as it moves forward along the cable, and a coating mechanism continuously applies fireproof material to the cleaned cable surface.

[0015] The beneficial effects of this application are as follows: This invention provides a cable fireproof coating device and coating application method capable of live-line operation. The coating device includes a main unit and a crawling mechanism, a cleaning mechanism, and a coating mechanism installed on the main unit. The crawling mechanism can be clamped onto the cable and crawl along the cable, thus driving the main unit and the cleaning and coating mechanisms on the main unit to move forward along the cable extension direction, enabling the cleaning and coating mechanisms to continuously clean and coat the cable, achieving automatic cleaning and coating functions. The coating device of this solution can crawl autonomously along the cable without the need for a mechanical arm support on the ground, so it is applicable regardless of the overhead height of the live cable, and has the advantages of small size and ease of use. Attached Figure Description

[0016] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a reference diagram showing the cable fireproof coating device capable of live-line operation as described in the embodiments of this application in its use state;

[0018] Figure 2 This is a schematic diagram of the structure of the cable fireproof coating device capable of live-line operation as described in the embodiments of this application;

[0019] Figure 3 This is a schematic diagram of the coating mechanism described in the embodiments of this application;

[0020] Figure 4 This is an exploded view of the coating mechanism described in the embodiments of this application;

[0021] Figure 5This is a schematic diagram of the cleaning mechanism described in the embodiments of this application;

[0022] Figure 6 This is one of the structural schematic diagrams of the crawling mechanism described in the embodiments of this application;

[0023] Figure 7 This is a second schematic diagram of the crawling mechanism described in the embodiments of this application.

[0024] In the picture:

[0025] 1. Main unit housing; 11. Paint lifting seat; 12. Cleaning lifting seat; 2. Paint mechanism; 21. Paint nozzle; 211. Stud; 212. Anti-loosening nut; 22. Paint rotation drive motor; 221. Paint drive gear; 23. Paint rotation arc plate; 231. Paint toothed plate; 232. Paint fixing block; 2321. Threaded hole; 24. Paint rotation mounting seat; 241. Paint mounting groove; 3. Cleaning mechanism; 31. Cleaning... 32. Cleaning nozzle; 33. Cleaning rotary drive motor; 34. Cleaning rotary arc plate; 4. Cleaning rotary mounting base; 4. Crawling mechanism; 41. Upper roller; 42. Lower roller; 43. Crawling drive motor; 44. Crawling fixed base; 441. Clamping mounting slot; 45. Clamping drive motor; 451. Clamping drive gear; 46. Second electromagnet; 47. First electromagnet; 48. Clamping arc plate; 481. Clamping toothed plate; 5. Cable. Detailed Implementation

[0026] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] After prolonged use, the fireproof layer on the outer surface of outdoor overhead cables gradually wears away. To ensure cable safety, a new fireproof layer needs to be recoated to form on the cable's outer surface. Chinese patent CN117160937A provides a robot for coating the surface of live cables, which includes a cleaning mechanism and a coating nozzle. During use, the cleaning mechanism removes dust from the cable surface, and the coating nozzle applies fireproof coating to the cable surface for good adhesion. However, this solution has certain drawbacks: the cleaning mechanism and coating nozzle are mounted on a rectangular mounting plate, which in turn is mounted on the robot's robotic arm. During use, the robot arm can only be carried by a ground-based carrier. The carrier's height is generally limited, and when the overhead cable is high, a longer robotic arm is required to reach the cable. In this case, the robotic arm is bulky and difficult to load.

[0030] like Figure 1 As shown, this embodiment provides a cable fireproof coating device capable of live-line operation, including a main unit 1, which houses a power supply and a control unit; the top of the main unit 1 is equipped with a crawling mechanism 4, a cleaning mechanism 3, and a coating mechanism 2, which are electrically connected to the control unit respectively; the crawling mechanism 4 can be clamped onto the cable 5 and drive the main unit 1 to crawl along the cable 5; the cleaning mechanism 3 can clean the surface of the cable 5; and the coating mechanism 2 can apply fireproof material to the surface of the cable 5.

[0031] The coating device in this solution operates automatically. Therefore, a power supply is installed inside the main unit 1 to provide electrical energy. The control unit is equipped with an automated control system that can automatically control the operation of the crawling mechanism 4, the cleaning mechanism 3, and the coating mechanism 2. Specifically, when the crawling mechanism 4 is driven to crawl along the cable 5, the cleaning mechanism 3 is simultaneously driven to clean the cable 5, and the coating mechanism 2 is driven to apply fire-retardant material to the surface of the cable 5. It should be noted that during operation, the cleaning mechanism 3 must be located in front of the coating mechanism 2 to achieve cleaning before coating.

[0032] In summary, the live-line working cable fireproof layer of this embodiment includes a main unit 1 and a crawling mechanism 4, a cleaning mechanism 3, and a coating mechanism 2 installed on the main unit 1. The crawling mechanism 4 can be clamped onto the cable 5 and crawl along the cable 5, thus driving the main unit 1 and the cleaning mechanism 3 and coating mechanism 2 on the main unit 1 to move forward along the extension direction of the cable 5, enabling the cleaning mechanism 3 and coating mechanism 2 to continuously clean and coat the cable 5, achieving automatic cleaning and coating functions. The coating device of this solution can crawl autonomously along the cable 5 without the need for a robotic arm support on the ground, so it is applicable regardless of the overhead height of the live cable 5, and has the advantages of small size and ease of use.

[0033] Regarding the configuration of the coating mechanism 2, in one embodiment, refer to... Figure 3 The coating mechanism 2 includes a coating nozzle 21 and a coating rotation drive assembly. The coating rotation drive assembly is equipped with two opposing coating nozzles 21. The coating rotation drive assembly can drive the two coating nozzles 21 to reciprocate around the cable 5 with a rotation angle of not less than 180°.

[0034] Similar to existing coating principles, the coating mechanism 2 needs to be connected to a material bin that can continuously supply raw materials and a pressurizing device that can increase pressure. In specific applications, the material bin and pressurizing device can be set inside the main unit 1, so that the coating operation can be completely off the ground; alternatively, the material bin and pressurizing device can be provided on the ground, and the pressurizing device can be connected to the coating mechanism 2 through a hose, so that the raw materials on the ground can be continuously supplied to the coating mechanism 2. This method can effectively reduce the weight of the main unit 1 and reduce the load on the cable 5.

[0035] Two opposing paint nozzles 21 are provided, capable of spraying material onto the surface of the cable 5 from two opposite sides. The paint mechanism 2 is driven to perform a reciprocating rotation with a rotation angle of not less than 180°. The combined spraying area of ​​the two paint nozzles 21 achieves 360° full coverage of the cable 5. Preferably, the rotation angle of the paint rotation drive assembly is 180° to 200°. This reciprocating rotation at this angle can effectively avoid pipe entanglement and affecting the spraying process during rotation.

[0036] In one embodiment, the paint rotation drive assembly includes a paint rotation mounting base 24, a paint rotation arc plate 23, and a paint rotation drive motor 22. The paint rotation mounting base 24 is mounted on the main unit 1, the paint rotation arc plate 23 is rotatably mounted on the paint rotation mounting base 24, and the paint rotation drive motor 22 is connected to the paint rotation arc plate 23 for transmission, and can drive the paint rotation arc plate 23 to perform reciprocating rotation with a rotation angle of not less than 180°; the two paint nozzles 21 are installed opposite each other on the inner side of the paint rotation arc plate 23.

[0037] The use of an arc-shaped paint rotating arc plate 23 enables the opposing installation of two paint nozzles 21. Importantly, its top side is open, allowing the cable 5 to be easily inserted between the two paint nozzles 21. Moreover, during operation, when encountering clamps or insulators for overhead cables 5 located above the cable 5, the paint rotating arc plate 23 can also smoothly pass under the clamps or insulators. Therefore, the paint rotating drive assembly of this solution also has the advantage of convenient obstacle avoidance.

[0038] The use of an arc-shaped coating to rotate the arc-shaped plate 23 also has the advantage of easy driving. (See reference) Figure 3 The coating rotating arc plate 23 is rotatably mounted on the coating rotating mounting base 24. The outer surface of the coating rotating arc plate 23 is provided with a coating toothed plate 231. The coating rotating mounting base 24 is provided with a coating mounting groove 241. The coating rotating drive motor 22 is connected to a coating drive gear 221. The coating drive gear 221 extends into the coating mounting groove 241 and meshes with the coating toothed plate 231. Under the drive of the coating rotating drive motor 22, the coating rotating arc plate 23 can be rotated. This structure has the advantages of simple structure and good reliability.

[0039] In one embodiment, the distance between the paint nozzle 21 and the arc center of the paint rotating arc plate 23 is adjustable; the main unit 1 is provided with a liftable paint lifting seat 11, and the paint rotating mounting seat 24 is mounted on the paint lifting seat 11.

[0040] Specifically, the distance between the paint nozzle 21 and the center of the arc of the rotating paint plate 23 is adjustable. This is to accommodate spraying operations on cables 5 with different wire diameters. That is, when installed on different cables 5, the distance between the paint nozzle 21 and the cable 5 can be adjusted appropriately to set the optimal spraying distance and obtain the best spraying effect. (Refer to...) Figure 4In a specific configuration, a stud 211 is connected to the tail of the paint nozzle 21, and a paint fixing block 232 is provided on the inner side of the paint rotating arc plate 23. The paint fixing block 232 is provided with a threaded hole 2321 that mates with the stud 211. The stud 211 is installed in the threaded hole 2321. The distance between the paint nozzle 21 and the arc center of the paint rotating arc plate 23 can be adjusted by rotating the stud 211. Furthermore, an anti-loosening nut 212 is also threadedly installed on the stud 211. After adjusting the distance, rotating the anti-loosening nut 212 tightens the paint fixing block 232, which can effectively prevent the threads from loosening and prevent the paint nozzle 21 from becoming loose.

[0041] A height-adjustable paint lifting platform 11 is installed on the main unit housing 1, which can drive the paint mechanism 2 to rise and fall. The advantage is that, during the process of advancing along the cable 5, when encountering a large obstacle, the paint lifting platform 11 can drive the entire paint mechanism 2 to descend to avoid the obstacle; after passing the obstacle, the paint lifting platform 11 can be raised again so that the two paint nozzles 21 can be aligned with the cable 5. It should be noted that, in order to achieve automatic obstacle avoidance, sensors that can monitor obstacles ahead can be reasonably installed on the main unit housing 1 or the paint mechanism 2. The sensors are connected to the control unit. When an obstacle is detected, the paint mechanism 2 can be automatically rotated to a suitable position, and the paint lifting platform 11 can be lowered to pause the paint spraying operation; after passing the obstacle, the paint lifting platform 11 can be raised again to restart the rotation of the paint mechanism 2 and resume paint spraying.

[0042] In one embodiment, the cleaning mechanism 3 includes a cleaning nozzle 31 and a cleaning rotation drive assembly. The cleaning rotation drive assembly is equipped with two opposing cleaning nozzles 31. The cleaning rotation drive assembly can drive the two cleaning nozzles 31 to reciprocate around the cable 5 with a rotation angle of not less than 180°.

[0043] Similarly, by arranging two opposing cleaning nozzles 31, the surface of the cable 5 can be cleaned from two opposite sides. The cleaning mechanism 3 is driven to perform a reciprocating rotation with an angle of not less than 180°. The combined cleaning area of ​​the two nozzles 31 achieves a comprehensive 360° cleaning of the cable 5. Preferably, the rotation angle of the cleaning rotation drive assembly is 180° to 200°. This reciprocating rotation at this angle effectively avoids pipe entanglement during rotation, which could affect cleaning.

[0044] The cleaning unit 3 can be cleaned using pressurized water or high-pressure air. When using pressurized water, the pressurizing device and water tank can be placed on the ground, and the pressurizing device can be connected to the cleaning unit 3 via a hose to continuously provide pressurized water for rinsing. When using pressurized air for rinsing, the air pressurizing device can be directly installed in the main unit housing 1.

[0045] In one embodiment, the cleaning rotation drive assembly includes a cleaning rotation mounting base 34, a cleaning rotation arc plate 33, and a cleaning rotation drive motor 32. The cleaning rotation mounting base 34 is mounted on the main unit housing 1, the cleaning rotation arc plate 33 is rotatably mounted on the cleaning rotation mounting base 34, and the cleaning rotation drive motor 32 is connected to the cleaning rotation arc plate 33 for transmission, and can drive the cleaning rotation arc plate 33 to perform reciprocating rotation with a rotation angle of not less than 180°; the two cleaning nozzles 31 are installed opposite each other on the inner side of the cleaning rotation arc plate 33.

[0046] Similarly, the curved cleaning rotating arc plate 33 has advantages such as convenient obstacle avoidance and easy driving. The specific installation structure and driving method of the cleaning rotating arc plate 33 can be referenced to the paint rotating arc plate 23.

[0047] In one embodiment, the distance between the cleaning nozzle 31 and the arc center of the cleaning rotating arc plate 33 is adjustable; the main unit 1 is provided with a height-adjustable cleaning lifting seat 12, and the cleaning rotating mounting seat 34 is mounted on the cleaning lifting seat 12.

[0048] Similarly, when applied to cables 5 of different sizes, this cleaning nozzle 31 can freely adjust the distance between itself and the surface of the cable 5 to achieve the best cleaning effect. The adjustable distance structure can be referenced from the installation structure of the paint nozzle 21.

[0049] Similarly, the cleaning lift seat 12 has the advantage of convenient obstacle avoidance.

[0050] For the configuration of crawling mechanism 4, please refer to... Figure 6-7 In one embodiment, the crawling mechanism 4 includes an upper roller 41, a lower roller 42, a crawling drive motor 43, and a clamping drive assembly. The crawling drive motor 43 is connected to either the upper roller 41 or the lower roller 42. The upper roller 41 is mounted on the clamping drive assembly, which can move the upper roller 41 between a clamping position and an obstacle avoidance position. In the clamping position, the upper roller 41 is located directly above the lower roller 42 and can cooperate with the lower roller 42 to clamp the cable 5. In the obstacle avoidance position, the upper roller 41 is offset from directly above the lower roller 42 to avoid obstacles above the cable 5.

[0051] The structure employs an upper roller 41 and a lower roller 42 to clamp the cable 5. Driving either one to rotate enables the crawling mechanism 4 to crawl along the cable 5. The upper roller 41 is mounted on a clamping drive assembly, which can move the upper roller 41. When encountering an obstacle (such as a wire clamp or insulator) above the cable 5, the clamping drive assembly moves the upper roller 41 to an obstacle avoidance position to avoid the obstacle. After passing the obstacle, the upper roller 41 returns to the clamping position, where it cooperates with the lower roller 42 to clamp the cable 5. Therefore, this crawling mechanism 4 has the advantage of obstacle avoidance.

[0052] In one embodiment, three crawling mechanisms 4 are spaced apart on the main unit chassis 1. Each crawling mechanism 4 includes a crawling fixing base 44, a first electromagnet 47, and a second electromagnet 46. The crawling fixing base 44 is fixedly installed on the main unit chassis 1. The first electromagnet 47 is installed on the top of the crawling fixing base 44, and the lower roller 42 is rotatably installed on the telescopic end of the first electromagnet 47. The clamping drive assembly includes a clamping arc plate 48 and a clamping drive motor 45. The clamping arc plate 48 is rotatably installed on the crawling fixing base 44, and the clamping drive motor 45 is drively connected to the clamping arc plate 48 to drive the clamping arc plate 48 to rotate. The second electromagnet 46 is installed on the inner side of the clamping arc plate 48, and the upper roller 41 is rotatably installed on the telescopic end of the second electromagnet 46.

[0053] Specifically, three crawling mechanisms 4 are set up. When passing through obstacles, at least two crawling mechanisms 4 can be kept clamped to the cable 5 to ensure the stability of the coating device clamped to the cable 5. The first electromagnet 47 and the second electromagnet 46 are the same as existing spring electromagnets. They have springs inside. When energized, the upper magnet is attracted and the electromagnet retracts. When de-energized, the spring pops out and the electromagnet extends. Therefore, the movement of the upper roller 41 and the lower roller 42 can be controlled by turning the power on and off.

[0054] When an obstacle is encountered, the first electromagnet 47 and the second electromagnet 46 are energized, causing the lower roller 42 and the upper roller 41 to move away from the cable 5. The upper roller 41 and the lower roller 42 do not contact the cable 5. The clamping drive assembly then drives the upper roller 41 to rotate to the left or right side of the cable 5 to avoid the obstacle on the cable 5. After passing the obstacle, the clamping is reset.

[0055] In the specific structure of the clamping drive assembly, the crawling fixed base 44 is provided with a clamping mounting groove 441, the clamping arc plate 48 is rotatably mounted in the clamping mounting groove 441, the outer surface of the clamping arc plate 48 is provided with a clamping toothed plate 481, the clamping drive motor 45 is connected to a clamping drive gear 451, the clamping drive gear 451 extends into the clamping mounting groove 441 and meshes with the clamping toothed plate 481. When the clamping drive motor 45 is started, it can drive the clamping arc plate 48 to rotate, so that it drives the upper roller 41 to switch between the clamping position and the obstacle avoidance position.

[0056] On the other hand, a coating application method based on the above-mentioned live-line working cable fireproof coating device is provided, comprising: a crawling mechanism 4 clamped on the cable 5 rolls forward along the cable 5, a cleaning mechanism 3 continuously cleans the surface of the cable 5 as it moves forward along the cable 5, and a coating mechanism 2 continuously applies fireproof material to the cleaned surface of the cable 5.

[0057] Based on the coating device of this embodiment, it is possible to perform live coating operations on overhead cables. Moreover, the coating device can crawl along the cable 5 independently without the need for a support arm, so it is less restricted by the construction environment. For example, it can be applied to spraying operations on live cables 5 above water, mountains, and gullies.

[0058] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0059] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0060] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0061] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A cable fireproof coating device capable of live-line operation, characterized in that, The system includes a main unit housing (1), which houses a power supply and a control unit. The top of the main unit housing (1) is equipped with a crawling mechanism (4), a cleaning mechanism (3), and a coating mechanism (2), all electrically connected to the control unit. The crawling mechanism (4) can be clamped onto the cable (5) and drive the main unit housing (1) to crawl along the cable (5). The cleaning mechanism (3) can clean the surface of the cable (5). The coating mechanism (2) can apply fire-retardant material to the surface of the cable (5). The crawling mechanism (4) includes an upper roller (41), a lower roller (42), a crawling drive motor (43), and a clamping drive assembly. The crawling drive motor (43) is connected to the upper roller (41) or the lower roller (42) in a transmission connection. The upper roller (41) is mounted on the clamping drive assembly. The clamping drive assembly can drive the upper roller (41) to move between a clamping position and an obstacle avoidance position. In the clamping position, the upper roller (41) is located directly above the lower roller (42) and can cooperate with the lower roller (42) to clamp the cable (5). In the obstacle avoidance position, the upper roller (41) is offset from directly above the lower roller (42) to avoid obstacles above the cable (5). Three crawling mechanisms (4) are spaced apart on the main chassis (1). Each crawling mechanism (4) includes a crawling fixed seat (44), a first electromagnet (47), and a second electromagnet (46). The crawling fixed seat (44) is fixedly installed on the main chassis (1). The first electromagnet (47) is installed on the top of the crawling fixed seat (44). The lower roller (42) is rotatably installed on the telescopic end of the first electromagnet (47). The clamping drive assembly includes a clamping arc plate (48) and a clamping drive motor (45). The clamping arc plate (48) is rotatably installed on the crawling fixed seat (44). The clamping drive motor (45) is connected to the clamping arc plate (48) for driving the clamping arc plate (48) to rotate. The second electromagnet (46) is installed inside the clamping arc plate (48). The upper roller (41) is rotatably installed on the telescopic end of the second electromagnet (46).

2. The cable fireproof coating device for live-line operation according to claim 1, characterized in that, The coating mechanism (2) includes a coating nozzle (21) and a coating rotation drive assembly. The coating rotation drive assembly is equipped with two opposing coating nozzles (21). The coating rotation drive assembly can drive the two coating nozzles (21) to reciprocate around the cable (5) with a rotation angle of not less than 180°.

3. The cable fireproof coating device for live-line operation according to claim 2, characterized in that, The paint rotation drive assembly includes a paint rotation mounting base (24), a paint rotation arc plate (23), and a paint rotation drive motor (22). The paint rotation mounting base (24) is mounted on the main unit (1). The paint rotation arc plate (23) is rotatably mounted on the paint rotation mounting base (24). The paint rotation drive motor (22) is connected to the paint rotation arc plate (23) and can drive the paint rotation arc plate (23) to perform a reciprocating rotation with a rotation angle of not less than 180°. The two paint nozzles (21) are mounted opposite each other on the inner side of the paint rotation arc plate (23).

4. The cable fireproof coating device for live-line operation according to claim 3, characterized in that, The distance between the paint nozzle (21) and the arc center of the paint rotating arc plate (23) is adjustable; the main unit (1) is provided with a liftable paint lifting seat (11), and the paint rotating mounting seat (24) is installed on the paint lifting seat (11).

5. The cable fireproof coating device for live-line operation according to claim 1, characterized in that, The cleaning mechanism (3) includes a cleaning nozzle (31) and a cleaning rotation drive assembly. The cleaning rotation drive assembly is equipped with two oppositely arranged cleaning nozzles (31). The cleaning rotation drive assembly can drive the two cleaning nozzles (31) to reciprocate around the cable (5) with a rotation angle of not less than 180°.

6. The cable fireproof coating device for live-line operation according to claim 5, characterized in that, The cleaning rotation drive assembly includes a cleaning rotation mounting base (34), a cleaning rotation arc plate (33), and a cleaning rotation drive motor (32). The cleaning rotation mounting base (34) is mounted on the main unit housing (1). The cleaning rotation arc plate (33) is rotatably mounted on the cleaning rotation mounting base (34). The cleaning rotation drive motor (32) is connected to the cleaning rotation arc plate (33) and can drive the cleaning rotation arc plate (33) to perform a reciprocating rotation with a rotation angle of not less than 180°. The two cleaning nozzles (31) are installed opposite each other on the inner side of the cleaning rotation arc plate (33).

7. The cable fireproof coating device for live-line operation according to claim 6, characterized in that, The distance between the cleaning nozzle (31) and the arc center of the cleaning rotating arc plate (33) is adjustable; the main unit (1) is provided with a height-adjustable cleaning lifting seat (12), and the cleaning rotating mounting seat (34) is installed on the cleaning lifting seat (12).

8. A coating application method based on the cable fireproof coating device for live-line operation as described in any one of claims 1-7, characterized in that, include: The crawling mechanism (4) clamped on the cable (5) rolls forward along the cable (5), the cleaning mechanism (3) continuously cleans the surface of the cable (5) as it moves forward along the cable (5), and the coating mechanism (2) continuously applies fire-retardant material to the surface of the cleaned cable (5).

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