Intelligent cutting device for power cable protection tube

Abstract

The present application relates to the field of metal pipe cutting, especially to an intelligent cutting device for power cable protection pipe. It comprises a machine tool table, the middle part of the machine tool table is provided with a cutting ring, and the two ends are respectively provided with machine tool frames; a cutting box is arranged on the cutting ring; the cutting box forms a sealed cutting environment, and a cutting structure and a gas feeding structure are arranged inside; a positioning structure is arranged on the machine tool frame. Based on the metal cutting machine tool, through the flexible machining platform and the precise annular track movement, the high rigidity and high precision pipe cutting is realized. At the same time, the inert gas protection and the intelligent monitoring system are integrated, the closed loop temperature control and the clean collection are realized while the sparks are eliminated, and a safe, clean and intelligent power cable protection metal pipe processing link is formed.

Description

Technical Field

[0001] This invention relates to the field of metal pipe cutting, and more particularly to an intelligent cutting device for power cable protection pipes. Background Technology

[0002] As a key protective component in cable laying systems, power cable protection pipes are widely used in urban power distribution networks, industrial plants, and municipal engineering projects. Among them, metal cable protection pipes dominate in scenarios involving direct burial, road crossings, and organic damage risks due to their superior mechanical strength, impact resistance, and electromagnetic shielding capabilities. During the construction and installation of cable protection pipes, precise cutting of the pipes according to the actual length requirements of the project is an indispensable processing step. The quality of the cut directly affects the sealing of subsequent pipe connections and the safety of cable laying. Therefore, the development of efficient and high-precision metal cable protection pipe cutting equipment has significant practical engineering value.

[0003] Chinese Patent No. CN220717913U discloses a cutting device for power cable protection pipes, relating to the field of cable protection pipe cutting technology. It includes a processing table, two clamping mechanisms, and a cutting mechanism. The cutting mechanism is located at the top of the processing table and between the two clamping mechanisms. The cutting mechanism includes a fixed shell plate, a rotating shell plate is rotatably connected inside the fixed shell plate, and a plurality of relatively movable mounting plates are provided at the front end of the rotating shell plate. A cutter is fixedly installed at one opposite end of the mounting plate, and an adjustment component is provided on one side of the mounting plate. A driving component is provided on the adjustment component.

[0004] The existing technology still has significant shortcomings: First, the cutting process lacks proactive safety control over the cutting environment. Especially for metal pipes, the high-temperature sparks generated during cutting pose a safety hazard of igniting surrounding cables or flammable materials, failing to meet the stringent inherent safety requirements of power construction. Second, the feed adjustment of the cutting tool and the pipe positioning mechanism are independent of each other, making it difficult to achieve real-time linkage compensation between cutting parameters and pipe condition. The cutting quality is easily affected by pipe wall thickness deviation or loose clamps. Third, the device lacks online detection methods for cut quality and a function for cleaning and collecting cutting debris. After cutting, manual grinding and cleaning are still required, making the process lengthy and difficult to guarantee processing consistency. Summary of the Invention

[0005] To address the problems existing in the background technology, an intelligent cutting device for power cable protection pipes is proposed. Through a flexible processing platform and precise circular trajectory motion, it achieves high-rigidity and high-precision pipe cutting. Simultaneously, it integrates an inert gas protection and intelligent monitoring system, eliminating sparks while achieving closed-loop temperature control and clean collection, thus forming a safe, clean, and intelligent processing chain for power cable protection metal pipes.

[0006] This invention proposes an intelligent cutting device for power cable protection pipes, comprising a machine tool table, a cutting ring in the middle of the machine tool table, and machine tool frames at both ends; a cutting box rotating around the center of the cutting ring is provided on the cutting ring; the cutting box allows the pipe to be cut to pass through and forms a sealed cutting environment, and the cutting box is provided with a cutting structure with a monitoring end and a gas supply structure for providing protective gas; the cutting structure is symmetrically arranged on the outer periphery of the pipe to be cut and cuts along a circular trajectory; the gas supply structure is mirror-arranged at both ends of the pipe to be cut and supplies gas along the outer periphery of the pipe to be cut; the machine tool frame is provided with a through hole for the pipe to be cut to pass through and a positioning structure opposite to the through hole; the positioning structures on both sides of the cutting ring are mirror-arranged to position the pipe from the outer periphery and drive the pipe to move synchronously through extension and rotation.

[0007] Preferably, a slide rail is provided on the machine tool table; the machine tool frame is slidably mounted at both ends of the slide rail via a slider; and the cutting ring is slidably mounted in the middle of the slide rail via a support rod.

[0008] Preferably, the cutting ring includes an outer ring frame that rotatably connects the support rods on both sides and an inner ring frame that is coaxially rotatably disposed within the outer ring frame; the cutting box is disposed on the inner ring frame and rotates coaxially.

[0009] Preferably, the cutting box includes a box body arranged along the diameter of the inner ring frame; the two sides of the box body slide along the inner wall of the inner ring frame, the inside is hollow and a cutting cavity is provided, and a cutting port communicating with the cutting cavity is provided at the front and rear; two sets of cutting components are provided in the cutting cavity and are located on the left and right sides of the cutting port; and an air supply component is provided on the cutting port.

[0010] Preferably, the air supply assembly includes an air outlet sleeve disposed along the inner wall of the cutting opening; an air outlet head disposed on the side of the air outlet sleeve facing the cutting cavity, and a rotating ring disposed inside the air outlet sleeve; an air bag ring disposed inside the rotating ring; the air outlet head is connected to an air source; and the air bag ring is connected to an air pump.

[0011] Preferably, the cutting assembly includes a cutting seat located inside the cutting cavity; a telescopic platform is provided on the front side of the cutting seat; a rotatable metal cutting blade is provided on the telescopic platform, and a monitoring unit is provided on the outer side of the telescopic platform; the monitoring unit integrates an infrared temperature sensor and an online non-destructive testing instrument.

[0012] Preferably, a slag collection box is provided at both the upper and lower ends of the box; a filter screen is installed inside the slag collection box, and it is connected to the cutting chamber through a pipe and a negative pressure pump.

[0013] Preferably, multiple sets of cutting auxiliary components are provided along the ring wall on both sides of the cutting ring; the cutting auxiliary components include auxiliary bent rods provided along the inner ring frame; the ends of the auxiliary bent rods are provided with telescopic sleeves; a slag collection cylinder is provided on the telescopic sleeves; an auxiliary frame is provided on the slag collection cylinder; the auxiliary frame has an arc-shaped structure, its concave surface contacts the tube to be cut, and is provided with a telescopic positioning wheel and a negative pressure adsorption hole; the negative pressure adsorption hole is connected to the slag collection cylinder through a pipe and a negative pressure pump; a grinding strip is provided on the side of the auxiliary frame facing the machine tool frame.

[0014] Preferably, the positioning structure includes a machine tool base; the machine tool base is mounted on a machine tool frame and rotates, with a feed inlet having a through hole at its center and multiple sets of positioning components on its outer periphery.

[0015] Preferably, the positioning component includes multiple sets of positioning seats; adjacent positioning seats are connected in series by telescopic shafts, and each set of positioning seats is provided with a telescopic positioning wheel on the side facing the center line of the feed inlet.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: This invention constructs a stable and flexible processing platform through the cooperation of a machine tool table, slide rails, an independently movable machine tool frame, and a cutting ring. This structure not only adapts to metal pipes protecting power cables of varying lengths, but its layout of the machine tool frames at both ends and the cutting ring in the middle provides stable support for fixing the pipe at both ends and cutting in the middle, fundamentally ensuring the rigidity and stability of the metal cutting process. Furthermore, the cutting ring employs a staggered rotating inner and outer ring frame design, combined with the sliding of the cutting box along its diameter, allowing the metal cutting blade to achieve complex and precise circular trajectory movements around the pipe. This demonstrates the forming machine tool's precise control over the tool trajectory. In addition, the symmetrically arranged cutting components within the cutting cavity feed synchronously, and the radial forces cancel each other out, effectively suppressing the deformation of the thin-walled metal pipe under cutting forces. This ensures high-quality cuts and high dimensional accuracy. This invention integrates an oxygen concentration analyzer and an inert gas supply structure within the cutting chamber to create an oxygen-free, sealed environment, eliminating the possibility of spark generation and achieving safe metal cutting for power cable protection pipe processing. Furthermore, an infrared temperature sensor monitors the cutting temperature in real time and feeds it back to the control system, dynamically adjusting the feed rate to form a closed-loop intelligent temperature control system, preventing overheating. Simultaneously, the inert gas and negative pressure slag collection system work together to purge and collect debris throughout the cutting process. Combined with an integrated online non-destructive testing instrument for real-time inspection of the cut, the entire process constitutes a highly intelligent, clean, and environmentally friendly metal pipe cutting and processing chain, significantly improving the safety, consistency, and intelligence level of power cable protection metal pipe processing. Attached Figure Description

[0017] Figure 1Structural diagram of intelligent cutting device for power cable protection pipe (perspective 1); Figure 2 Structural diagram of the intelligent cutting device for power cable protection pipes (perspective 2); Figure 3 Here is a structural diagram of the cutting ring and the cutting box; Figure 4 Here is a structural diagram of the cutting ring; Figure 5 This is a cross-sectional view of the cut ring; Figure 6 This is a structural diagram of the cutting component; Figure 7 This is a structural diagram of the cutting auxiliary component; Figure 8 This is a schematic diagram of the positioning structure; Figure 9 This is a structural diagram of the positioning component; Reference numerals: 1. Machine table; 2. Machine frame; 3. Cutting ring; 301. Outer ring frame; 302. Inner ring frame; 4. Positioning structure; 401. Machine base; 402. Feed inlet; 403. Positioning assembly; 40301. Positioning seat; 40302. Telescopic shaft; 40303. Positioning wheel two; 5. Cutting auxiliary assembly; 501. Auxiliary bent rod; 502. Telescopic sleeve; 503. Slag collection cylinder; 504. Auxiliary frame; 505. Positioning wheel one; 506. Negative pressure adsorption hole; 507. Grinding strip; 6. Cutting box; 601. Box body; 602. Air outlet; 603. Airbag ring; 604. Slag collection box; 605. Cutting port; 606. Air outlet sleeve; 607. Drive wheel; 608. Cutting assembly; 60801. Cutting seat; 60802. Telescopic table; 60803. Metal cutting blade; 60804. Monitoring unit; 609. Pipeline 1; 610. Negative pressure pump 1; 7. Support rod. Detailed Implementation

[0018] Example 1: This invention proposes an intelligent cutting device for power cable protection pipes, such as... Figures 1-3As shown, the system includes a machine tool table 1, a cutting ring 3 in the middle of the machine tool table 1, and machine tool frames 2 at both ends. A cutting box 6 rotating around the center of the cutting ring 3 is mounted on the cutting ring 3. Multiple sets of cutting auxiliary components 5 are mounted along the ring wall on both sides of the cutting ring 3. The cutting box 6 allows the pipe to be cut to pass through and forms a sealed cutting environment. The cutting box 6 contains a cutting structure with a monitoring end and a gas supply structure that provides protective gas. The cutting structure is symmetrically arranged around the outer periphery of the pipe to be cut and cuts along a circular trajectory to ensure symmetrical force application and reduce deformation of the metal pipe. The gas supply structure is mirror-arranged at both ends of the pipe to be cut and supplies gas along the outer periphery of the pipe, isolating oxygen to prevent spark generation and cleaning cutting debris to improve cutting quality. The machine tool frame 2 has a through hole for the pipe to be cut and a positioning structure 4 opposite to the through hole. The positioning structures 4 on both sides of the cutting ring 3 are mirror-arranged, positioning the pipe from the outer periphery and driving the pipe to move synchronously through extension and rotation.

[0019] It should be further explained that the machine tool table 1 is equipped with a slide rail; the machine tool frame 2 is slidably mounted at both ends of the slide rail via a slider; the cutting ring 3 is slidably mounted in the middle of the slide rail via a support rod 7; the machine tool frame 2 and the cutting ring 3 move independently along the slide rail, with the two ends fixed and the middle cutting, and the fixed and cutting positions are adjustable to match the cutting requirements of power cable protection pipes of different lengths.

[0020] like Figures 4-5 As shown, the cutting ring 3 includes an outer ring frame 301 that rotatably connects the support rods 7 on both sides, and an inner ring frame 302 that is coaxially rotatably disposed within the outer ring frame 301; the cutting box 6 is disposed on the inner ring frame 302 and rotates coaxially.

[0021] The inner ring frame 302 and the cutting box 6 rotate coaxially, while the outer ring frame 301 rotates alternately with the former two. This makes the cutting trajectory more diverse and flexible.

[0022] The cutting box 6 includes a box body 601 arranged along the diameter of the inner ring frame 302; the box body 601 is driven by drive wheels 607 on both sides, and slides along the inner wall of the inner ring frame 302. The box body 601 is hollow inside and has a cutting cavity, and has cutting openings 605 at the front and rear that communicate with the cutting cavity.

[0023] It should be further explained that two sets of cutting components 608 are provided in the cutting cavity and are located on the left and right sides of the cutting opening 605.

[0024] It should be further noted that the air supply component is located on the cutting port 605.

[0025] The cutting assembly 608 (cutting structure) and the air supply assembly (air supply structure) are integrated on the housing 601 and are staggered in position, so that cutting and air supply can work together.

[0026] like Figure 5As shown, the air supply assembly includes an air outlet sleeve 606 disposed along the inner wall of the cutting opening 605; an air outlet head 602 is disposed on the side of the air outlet sleeve 606 facing the cutting cavity, and a rotating ring is disposed inside the air outlet sleeve 606; an airbag ring 603 is disposed inside the rotating ring.

[0027] It should be further explained that the gas outlet 602 is connected to a gas source, specifically high-purity (e.g., above 99.99%) nitrogen. An oxygen concentration analyzer also needs to be installed inside the cutting chamber to monitor the oxygen content in real time and ensure that it is below the safety line.

[0028] It should be further explained that the airbag ring 603 is connected to the air pump. Inflating the airbag ring 603 causes it to fit against the pipe wall, forming a sealed cutting environment. Deflating the airbag provides space for pipe movement.

[0029] Sparks are essentially the oxidation and combustion reaction of metals at high temperatures. Inert gases isolate oxygen, fundamentally eliminating the conditions for spark generation and combustion. In the cutting of power cable protection conduits, where safety requirements are extremely high, using inert gas protection can effectively prevent sparks. Isolating oxygen also prevents high-temperature oxidation of the cut edges. Furthermore, the high-pressure jet of inert gas itself is a powerful airflow that can quickly blow away molten metal, residue, and dust generated during cutting from the cutting area, achieving a cleaning function.

[0030] like Figure 6 As shown, the cutting assembly 608 includes a cutting seat 60801 located inside the cutting cavity; a telescopic platform 60802 is provided on the front side of the cutting seat 60801; a rotatable metal cutting blade 60803 is provided on the telescopic platform 60802; a monitoring unit 60804 is provided on the outer side of the telescopic platform 60802; an infrared temperature sensor and an online non-destructive testing instrument are integrated on the monitoring unit 60804.

[0031] The cutting depth and angle can be adjusted by the cutting of the telescopic table 60802 and the rotation of the metal cutting blade 60803. Combined with the overall rotation of the cutting box 6, symmetrical cuts at different angles and depths can be made around the tube to be cut, following a circular trajectory. An infrared temperature sensor monitors the temperature of the cutting area in real time, linking it with parameters such as feed speed to achieve precise process control. After cutting, the cut quality is directly inspected within the sealed cavity using an online non-destructive testing instrument.

[0032] like Figures 4-5 As shown, slag collection boxes 604 are provided at both the upper and lower ends of the housing 601; a filter screen is installed inside the slag collection box 604, which is connected to the cutting chamber through a pipe 609 and a negative pressure pump 610. After cutting, the molten metal, residue, and dust in the cutting chamber are collected to ensure the cutting effect.

[0033] like Figure 7As shown, the cutting auxiliary assembly 5 includes an auxiliary bent rod 501 arranged along the inner ring frame 302; a telescopic sleeve 502 is provided at the end of the auxiliary bent rod 501; a slag collection cylinder 503 is provided on the telescopic sleeve 502; and an auxiliary frame 504 is provided on the slag collection cylinder 503.

[0034] It should be further explained that the auxiliary frame 504 has an arc-shaped structure, with its concave surface contacting the pipe to be cut, and is equipped with a retractable positioning wheel 505 and a negative pressure adsorption hole 506; the negative pressure adsorption hole 506 is connected to the slag collection cylinder 503 through the cooperation of the second pipe and the second negative pressure pump.

[0035] It should be further noted that a grinding strip 507 is provided on the side of the auxiliary frame 504 facing the machine tool frame 2.

[0036] During cutting, multiple sets of telescopic sleeves 502 drive multiple sets of auxiliary frames 504 to approach the pipe to be cut from the outer periphery. Simultaneously, positioning wheels 505 extend and further conform to the metal pipe wall, ensuring that both sides of the cutting point are fixed by the corresponding sets of cutting auxiliary components 5. Since the fixed end is equipped with positioning wheels 505 and negative pressure suction holes 506, it can also assist in movement and cleaning before and after cutting. After cutting, the cut pipe is removed from the cutting chamber, and the cut edge can be further polished against the grinding strip 507. The polishing dust is then collected at close range by the negative pressure suction holes 506. In other words, the cutting auxiliary components 5 can assist in the movement, positioning, cleaning, and polishing of the pipe, offering multiple functions.

[0037] like Figures 8-9 As shown, the positioning structure 4 includes a machine tool base 401; the machine tool base 401 is driven by a drive sleeve and is mounted on the machine tool frame 2 for rotation. A feed inlet 402 with a through hole is located at its center, and multiple sets of positioning components 403 are arranged around its outer periphery. The pipe passes through the through hole and the feed inlet 402 for loading and unloading. The rotation of the machine tool base 401 drives the multiple sets of positioning components 403 to rotate synchronously around the through hole, thereby causing the pipe to rotate.

[0038] The positioning component 403 includes multiple positioning seats 40301; adjacent positioning seats 40301 are connected in series by telescopic shafts 40302, and each positioning seat 40301 is provided with a telescopic positioning wheel 40303 on one side facing the center line of the feed inlet 402.

[0039] Positioning wheel 40303 can both guide the movement of the pipe and position it. Combined with the telescopic shaft 40302, the length of the positioning assembly 403 is adjustable. The pipe can be positioned, guided, and rotated for adjustment both before and after cutting.

[0040] Example 2: Based on the intelligent cutting device for power cable protection pipes in the above examples, this example proposes an intelligent cutting method for power cable protection pipes, with the following steps: S1. Intelligent feeding and initial positioning: Based on the length of the protective metal pipe for the power cable to be cut, the system automatically calculates and drives the machine tool frame 2 and the cutting ring 3 to move independently to the preset position along the slide rail on the machine tool table 1. Subsequently, the metal pipe to be cut is fed into the machine tool through the through hole of the machine tool frame 2 and the feed port 402 of the positioning structure 4 by the external feeding mechanism. At this time, the multiple positioning seats 40301 of the positioning structure 4 are adjusted to a spacing that matches the pipe diameter through the telescopic shaft 40302, and the positioning wheels 40303 on the inner side extend out to initially clamp and guide the pipe from the outer periphery, ensuring that the pipe axis coincides with the center line of the cutting ring 3; S2. Sealed Cutting Environment Construction: After positioning, the cutting box 6 on the cutting ring 3 slides along the inner ring frame 302 via the drive wheel 607, allowing the pipe to pass through the cutting openings 605 before and after it. Immediately, the airbag ring 603 in the air supply assembly is activated, inflated by the air pump, and tightly adheres to the pipe wall, constructing a relatively sealed space within the cutting chamber. Simultaneously, the system starts supplying high-purity nitrogen, and the air outlet 602 on the air outlet sleeve 606 begins to continuously inject nitrogen into the cutting chamber. An oxygen concentration analyzer installed inside the cutting chamber monitors the oxygen content in real time, ensuring it remains below a safe threshold, preparing for a cold cutting environment free of oxidation and sparks. S3, Symmetrical Intelligent Cutting: After the cutting environment stabilizes, the core cutting stage begins. The telescopic table 60802 of the cutting assembly 608 drives the metal cutting blade 60803 to the initial cutting position based on the preset pipe wall thickness and material. Simultaneously, multiple cutting assemblies 608 of the cutting structure are symmetrically arranged along a circular trajectory within the cutting cavity, and synchronously and symmetrically advance towards the pipe wall. The inner ring frame 302 of the cutting ring 3 rotates in tandem with the cutting box 6, driving the metal cutting blade 60803 to move in a circular trajectory around the pipe. The cutting assemblies 608 on both sides apply force synchronously from opposite directions, ensuring that the radial cutting forces cancel each other out, effectively preventing deformation of the thin-walled metal pipe. The entire cutting process is coordinated in real-time by the machine tool fieldbus control system, precisely controlling the spindle speed and feed rate. S4. Intelligent Monitoring, Cleaning, and Linkage Compensation: While step S3 is in progress, the infrared temperature sensor integrated into the monitoring unit 60804 and the online non-destructive testing instrument continue to operate. The infrared temperature sensor monitors the temperature of the cutting area in real time and feeds the signal back to the industrial automatic control system. The system dynamically adjusts the cutting parameters (such as feed rate) according to temperature changes to achieve precise process control. Simultaneously, the air supply assembly is deeply linked to the cutting action. The high-pressure nitrogen gas continuously ejected from the air outlet 602 continuously isolates oxygen to prevent spark generation and high-temperature oxidation of the cut surface. Furthermore, the powerful airflow acts as an auxiliary cleaning medium, promptly blowing away metal debris generated during cutting from the cutting area. The blown debris is collected by the slag collection boxes 604 at the upper and lower ends of the housing 601 through the negative pressure pump 610 and pipeline 609, maintaining the cleanliness of the cutting area. S5. Multifunctional Collaborative Operation of Auxiliary Components: During and after the cutting process, the cutting auxiliary component 5 and the positioning structure 4 perform multifunctional auxiliary tasks. During cutting, the auxiliary frame 504 of the cutting auxiliary component 5 approaches the pipe wall through the telescopic sleeve 502, and the positioning wheel 1 505 on it extends out, working in conjunction with the positioning wheel 2 40303 of the positioning structure 4 to form a stable support on both sides of the cutting point, further suppressing vibration and ensuring the smoothness of the cut. After the cutting is completed, the online non-destructive testing instrument on the monitoring unit 60804 performs quality inspection on the cut to assess whether there are defects such as cracks. After the inspection is qualified, the airbag ring 603 deflates and releases the seal, the positioning wheel 2 40303 and the positioning wheel 1 505 retract, and the system moves the pipe out of the cutting cavity. The cut part contacts the grinding strip 507 on the auxiliary frame 504 for precision chamfering and burr removal. The trace dust generated by grinding is adsorbed at close range by the negative pressure adsorption hole 506 and collected into the slag collection cylinder 503 through the second pipe, achieving clean grinding; S6. Finished Product Inspection and Unloading: After grinding, positioning rollers 40303 and 505 retract, and the system delivers the finished pipe. The machine frame 2 and cutting ring 3 can automatically adjust to the new working position according to the next pipe length requirement.

[0041] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An intelligent cutting device for power cable protection pipes, characterized in that, It includes a machine tool table (1), a cutting ring (3) is set in the middle of the machine tool table (1), and a machine tool frame (2) is set at both ends. A cutting box (6) is provided on the cutting ring (3) and rotates around the center of the ring. The cutting box (6) allows the pipe to be cut to pass through and forms a sealed cutting environment. The cutting box (6) is provided with a cutting structure with a monitoring end and a gas supply structure that provides protective gas. The cutting structure is symmetrically arranged on the outer periphery of the pipe to be cut and cuts along the circular trajectory. The gas supply structure is mirrored on both ends of the pipe to be cut and supplies gas along the outer periphery of the pipe to be cut. The machine tool frame (2) is provided with a through hole for the pipe to be cut to pass through and a positioning structure (4) opposite to the through hole; the positioning structures (4) on both sides of the cutting ring (3) are arranged in a mirror image to position the pipe from the outer periphery and drive the pipe to move synchronously through extension and rotation.

2. The intelligent cutting device for power cable protection pipes according to claim 1, characterized in that, The machine tool table (1) is equipped with a slide rail; the machine tool frame (2) is slidably mounted at both ends of the slide rail via a slider; the cutting ring (3) is slidably mounted in the middle of the slide rail via a support rod (7).

3. The intelligent cutting device for power cable protection pipes according to claim 2, characterized in that, The cutting ring (3) includes an outer ring frame (301) that rotatably connects the support rods (7) on both sides and an inner ring frame (302) that is coaxially rotatably disposed in the outer ring frame (301). The cutting box (6) is mounted on the inner ring frame (302) and rotates coaxially.

4. The intelligent cutting device for power cable protection pipes according to claim 3, characterized in that, The cutting box (6) includes a box body (601) arranged along the diameter of the inner ring frame (302); the two sides of the box body (601) slide along the inner wall of the inner ring frame (302), the inside is hollow and a cutting cavity is provided, and a cutting port (605) connecting the cutting cavity is provided at the front and back. Two sets of cutting components (608) are provided in the cutting cavity and are located on the left and right sides of the cutting opening (605); The air supply assembly is located on the cut-out (605).

5. The intelligent cutting device for power cable protection pipes according to claim 4, characterized in that, The air supply assembly includes an air outlet sleeve (606) disposed along the inner wall of the cutting opening (605); an air outlet head (602) is disposed on the side of the air outlet sleeve (606) facing the cutting cavity, and a rotating ring is disposed inside the air outlet sleeve (606); an air bag ring (603) is disposed inside the rotating ring. The air outlet (602) is connected to the air source; The airbag ring (603) is connected to the inflation pump.

6. The intelligent cutting device for power cable protection pipes according to claim 4, characterized in that, The cutting assembly (608) includes a cutting seat (60801) located in the cutting cavity; a telescopic platform (60802) is provided on the front side of the cutting seat (60801); a rotatable metal cutting blade (60803) is provided on the telescopic platform (60802); and a monitoring unit (60804) is provided on the outer side of the telescopic platform (60802). The monitoring unit (60804) integrates an infrared temperature sensor and an online non-destructive testing instrument.

7. The intelligent cutting device for power cable protection pipes according to claim 4, characterized in that, The upper and lower ends of the housing (601) are equipped with slag collection boxes (604); the slag collection box (604) is equipped with a filter screen, which is connected to the cutting chamber through the cooperation of pipe one (609) and negative pressure pump one (610).

8. The intelligent cutting device for power cable protection pipes according to claim 3, characterized in that, Multiple sets of cutting auxiliary components (5) are provided along the ring wall on both sides of the cutting ring (3); The cutting auxiliary assembly (5) includes an auxiliary bent rod (501) arranged along the inner ring frame (302); the end of the auxiliary bent rod (501) is provided with a telescopic sleeve (502); a slag collection cylinder (503) is provided on the telescopic sleeve (502); and an auxiliary frame (504) is provided on the slag collection cylinder (503). The auxiliary frame (504) has an arc-shaped structure with its concave surface contacting the pipe to be cut, and is equipped with a retractable positioning wheel (505) and a negative pressure adsorption hole (506); the negative pressure adsorption hole (506) is connected to the slag collection cylinder (503) through the cooperation of the second pipe and the second negative pressure pump. A grinding strip (507) is provided on the side of the auxiliary frame (504) facing the machine tool frame (2).

9. The intelligent cutting device for power cable protection pipes according to claim 2, characterized in that, The positioning structure (4) includes a machine tool base (401); the machine tool base (401) is mounted on the machine tool frame (2) and rotates on its own, with a feed port (402) with a through hole at its center and multiple positioning components (403) on its outer periphery.

10. The intelligent cutting device for power cable protection pipes according to claim 9, characterized in that, The positioning component (403) includes multiple positioning seats (40301); adjacent positioning seats (40301) are connected in series by telescopic shafts (40302), and each positioning seat (40301) is provided with a telescopic positioning wheel (40303) on the side facing the center line of the feed inlet (402).

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