A live-line cutting cable jacket tool and method

Abstract

The present application relates to cable terminal maintenance and repair technical field, especially a kind of cutting cable sleeve tool and method without power cut, its cutting cable sleeve tool without power cut includes, insulation bearing assembly, for as the basic support structure of complete machine;Clamping positioning assembly, it is installed on the insulation bearing assembly, for the radial clamping to cable terminal protection sleeve and realize the relative coaxial of tool center and sleeve center;Depth guiding assembly, it is arranged between insulation bearing assembly and protection sleeve, for limiting the actual cutting depth of cutting knife;Depth guiding assembly drives cutting knife to form annular cut seam and drive cutting knife to form longitudinal cut seam along the linear motion of protection sleeve axis direction, the quick coaxial fixation of tool and cable terminal protection sleeve is realized by clamping positioning assembly, then the maximum cutting depth of rotary cutting knife is mechanically limited according to sleeve wall thickness by depth guiding assembly, prevent damaging internal cable.

Description

Technical Field

[0001] This invention relates to the field of cable terminal maintenance and repair technology, and in particular to a tool and method for cutting cable conduits without power interruption. Background Technology

[0002] Currently, after long-term outdoor operation, the external protective sleeves of cable terminals are prone to cracking, embrittlement, and damage due to ultraviolet aging, rainwater erosion, temperature cycling, and mechanical stress. For cable terminals already in operation, if it is necessary to remove the old protective sleeves and replace them with new ones, on-site methods usually only involve manual dismantling after a power outage or using ordinary cutting tools. This approach has three significant shortcomings.

[0003] It must be implemented in conjunction with the power outage plan, and is greatly constrained by the operating mode and power supply arrangement. It is difficult to organize emergency repairs or defect elimination, and it is difficult to meet the needs of uninterrupted power supply operation and maintenance.

[0004] Ordinary cutting methods lack specific positioning and depth control mechanisms for cable terminal protective sleeves. The cutting tool is prone to deviation or cutting too deeply during cutting, which may damage the internal cable body, insulation layer, stress control layer, and accessory sealing structure.

[0005] Existing tools can only complete single-direction cutting, making it difficult to achieve continuous forming of circumferential and axial cuts in confined spaces, resulting in low demolition efficiency, numerous repetitive operations, and poor work consistency. Summary of the Invention

[0006] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0007] In view of the problems existing in the prior art, such as the need for power outage operations, the risk of damage to the cable body during cutting, and the difficulty in simultaneously achieving continuous circumferential and axial cutting, the present invention is proposed.

[0008] Therefore, one of the objectives of this invention is to provide a tool for cutting cable conduits without power interruption.

[0009] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including an insulating load-bearing component, used as a basic support structure for the whole machine; A clamping and positioning assembly is installed on the insulating bearing assembly to radially clamp the cable terminal protective sleeve and achieve relative coaxiality between the tool center and the sleeve center; A depth-determining guide assembly is positioned between the insulating load-bearing assembly and the protective sleeve to limit the actual cutting depth of the cutter. The depth guide assembly drives the cutter to move circumferentially along the protective sleeve to form a circumferential cut, or drives the cutter to move linearly along the axis of the protective sleeve to form a longitudinal cut.

[0010] As a preferred embodiment of the uninterrupted power cutting cable sleeve tool of the present invention, wherein: the insulating bearing assembly includes a bearing plate, the bearing plate is annular and has an opening on one side, the opening being used to fit into the side wall of the protective sleeve from the radial direction; The inner wall of the bearing plate is provided with a sliding groove for the fixed-depth guide assembly to perform circumferential movement to form a circumferential cut.

[0011] As a preferred embodiment of the non-power-off cutting cable sleeve tool of the present invention, the clamping and positioning assembly includes circumferentially distributed guide rollers, the guide rollers are positioned by an active adjustment component, and the active adjustment component is installed on the side wall of the reference support component; The active adjustment component includes a knob located at the top of the support plate. Rotating the knob causes the lead screw to move. Due to the self-locking function of the lead screw and the threaded sleeve, the guide pressure roller can clamp the protective sleeve.

[0012] In a preferred embodiment of the non-power-off cutting cable sleeve tool of the present invention, the depth-fixed guide component includes a sliding block disposed inside the sliding groove, and a limiting groove is formed between the sliding block and the moving plate and connected to the lower plate of the bearing plate.

[0013] As a preferred embodiment of the non-power-off cutting cable sleeve tool of the present invention, the depth-fixing guide component further includes a fixed block disposed on the side wall of the sliding block. The side wall of the fixed block adopts a threaded rod and a scale adjustment structure for fine setting of the cutting depth according to the protective sleeve of different materials and thicknesses.

[0014] As a preferred embodiment of the non-power-off cutting cable sleeve tool of the present invention, the bottom end of the fixing block is provided with a dovetail block, and the side of the fixing block near the protective sleeve is provided with an extension block.

[0015] In a preferred embodiment of the uninterrupted power cutting cable conduit tool of the present invention, the outer extension block is connected to the power tool via a sliding sleeve, and the output shaft of the power tool is connected to the rotary cutter.

[0016] As a preferred embodiment of the uninterrupted power cutting cable conduit tool of the present invention, the power tool adopts a replaceable power supply assembly, the power tool adopts a low-voltage DC drive motor, and the motor output end is connected to the cutting blade through a reduction transmission or direct connection; the replaceable power supply assembly adopts a pluggable battery pack.

[0017] As a preferred embodiment of the non-power-off cutting cable conduit tool of the present invention, the bearing plate adopts a layered isolation combination of high-strength insulating material and metal force-bearing skeleton, the metal force-bearing component undertakes the functions of rigidity and force transmission, and the outer side of the insulating bearing component is fixed with an insulating layer and the contact path near the live working area is provided with an insulating layer.

[0018] To solve the above-mentioned technical problems, the present invention also provides the following technical solution: a method for cutting cable sleeves without power interruption, including the above-mentioned tool for cutting cable sleeves without power interruption, and further including adjusting the opening of the clamping and positioning assembly according to the outer diameter of the protective sleeve to be processed, and installing the tool at a predetermined position outside the protective sleeve. As a preferred embodiment of the non-power-off cutting method for cable sleeves of the present invention, wherein: the depth guide component is adjusted so that the cutting depth of the cutter does not exceed the set value of the protective sleeve wall thickness; As a preferred embodiment of the non-power-off cutting method for cable conduit of the present invention, wherein: the electric drive assembly is activated to perform circumferential cutting, forming at least one circumferential slit; As a preferred embodiment of the method for cutting cable sleeves without power interruption of the present invention, wherein: switching to the axial cutting state, at least one longitudinal slit is formed along the axial direction of the protective sleeve; As a preferred embodiment of the non-power-off cutting method for cable sleeves of the present invention, the following steps are taken: stop the drive, release the clamp, and peel off the cut old protective sleeve from the outside of the cable terminal.

[0019] The beneficial effects of the cable sleeve cutting method described in this invention without power interruption are as follows: This invention achieves rapid coaxial fixation of the tool and the cable terminal protective sleeve through a clamping and positioning assembly. Then, a depth-fixed guide assembly mechanically limits the maximum cutting depth of the rotating cutter according to the sleeve wall thickness to prevent damage to the internal cable. Utilizing the same electric drive platform, by switching guide paths, the cutter is first driven to move circumferentially along the sliding groove to form a circumferential slit, and then driven to move axially along the linear guide rail to form a longitudinal slit, cutting interconnected composite slits on the protective sleeve to form a peelable petal-like structure. Simultaneously, the tool as a whole adopts an insulated load-bearing and isolation design, combined with controllable depth cutting, effectively controlling electrical safety risks and cutting damage risks, thereby achieving safe and efficient removal of the protective sleeve under power interruption conditions. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1A schematic diagram of the tool for cutting cable conduits without power interruption.

[0021] Figure 2 This is a top view of a tool for cutting cable conduits without power interruption.

[0022] Figure 3 This is a bottom view of a tool for cutting cable conduits without power interruption.

[0023] Figure 4 for Figure 3 A magnified structural diagram at point C.

[0024] Figure 5 A schematic diagram showing the disassembled structure of the insulation bearing component and the depth guide component of a tool for cutting cable conduits without power interruption.

[0025] Figures 6-8 A schematic diagram of the product structure of a tool for cutting cable conduits without power interruption. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0030] Reference Figures 1-4This is the first embodiment of the present invention, which provides a non-disconnect power cable sleeve cutting tool, including an insulation bearing assembly 1, a clamping and positioning assembly 2, a depth-fixing guide assembly 4, a power tool 47, and other components. The insulation bearing assembly 1 serves as the basic support structure for the entire machine. All components are mounted on the same bearing system and establish a controlled cutting trajectory around the outer circumference of the protective sleeve 3.

[0031] Insulating load-bearing component 1 is used as the basic support structure for the entire machine; The clamping and positioning assembly 2, mounted on the insulation bearing assembly 1, is used to radially clamp the cable terminal protective sleeve 3 and achieve relative coaxiality between the tool center and the sleeve center. Because the two guide rollers 21 have larger diameters on both sides and a smaller diameter in the middle, forming a drum-shaped configuration, their shape allows them to form a two-point contact conformal fit with the outer wall of the protective sleeve 3, thus generating a self-centering constraint effect during radial clamping. Due to the combined action of at least two circumferentially distributed guide rollers 21, the tool is less prone to radial wobble and circumferential movement during cutting, providing a stable guiding reference for subsequent circumferential and axial cutting. The depth guide component 4 is located between the insulation bearing component 1 and the protective sleeve 3. It is used to limit the actual cutting depth of the cutter. When the cutter feeds inward, its maximum cutting amount is controlled by the threaded rod 43 and the scale adjustment structure, so that the blade only penetrates the wall thickness of the protective sleeve 3 or is close to the lower limit of the wall thickness, without touching the internal cable and accessory structure. The depth guide assembly 4 drives the cutter to move circumferentially along the protective sleeve 3 to form a circumferential cut or drives the cutter to move linearly along the axis of the protective sleeve 3 to form a longitudinal cut. The circumferential cut is mainly used to determine the cutting boundary and provide the starting cut for subsequent stripping and removal. Alternatively, the cutter can be driven to move linearly along the axis of the protective sleeve 3 to form a longitudinal cut. Depending on the removal needs, one or two longitudinal cuts can be set to make the protective sleeve form an openable petal structure so that it can be easily removed from the outside of the cable.

[0032] Specifically, the insulating bearing assembly 1 includes a bearing plate 11, which is annular and has an opening D on one side. The opening D is used to fit into the side wall of the protective sleeve 3 from the radial direction. The bearing plate 11 is preferably a combination of high-strength insulating material and metal load-bearing skeleton in a layered isolation manner. The metal load-bearing component mainly undertakes the functions of stiffness and force transmission.

[0033] The inner wall of the support plate 11 is provided with a sliding groove 12 for the fixed-depth guide assembly 4 to perform circumferential movement to form a circumferential slit. During cutting, while keeping the clamped state unchanged, the operator drives the tool to rotate around the outer circle of the sleeve, or drives the cutting head to move relative to the annular guide rail, so that the cutter completes a cut around one circle or a part of the circle.

[0034] Furthermore, the clamping and positioning assembly 2 includes circumferentially distributed guide rollers 21. The guide rollers 21 are positioned by an active adjusting member 22, which is mounted on the top of the reference support member 23. The active adjusting member 22 moves synchronously closer to or further away from the bushings of different outer diameters via a lead screw, rack, or eccentric wheel mechanism.

[0035] The active adjustment component 22 includes a knob 221 located at the top of the support plate 11. Rotating the knob 221 causes the lead screw 222 to move. Due to the self-locking function of the lead screw 222 and the threaded sleeve 223, the guide pressure roller 21 can clamp the protective sleeve 3.

[0036] Reference Figures 2-5 This is the second embodiment of the present invention. Unlike the previous embodiment, the depth-fixed guide assembly 4 includes a sliding block 41 disposed inside the sliding groove 12. A limiting groove A is formed between the sliding block 41 and the moving plate B, connecting to the lower plate of the bearing plate 11. This structure is used to drive the cutter to move linearly along the axis of the protective sleeve to form a longitudinal slit after circumferential positioning is completed. After the cutting head switches from circumferential mode to axial mode, the cutter advances along a set linear trajectory.

[0037] Furthermore, the depth-fixing guide assembly 4 also includes a fixing block 42 disposed on the side wall of the sliding block 41. The side wall of the fixing block 42 adopts a threaded rod 43 and a scale adjustment structure for finely setting the cutting depth according to the protective sleeve 3 of different materials and thicknesses. To adapt to sleeves of different materials and wall thicknesses, the fine-tuning mechanism can adopt a threaded pair, a graded locking mechanism, or a scale adjustment structure to achieve fine setting.

[0038] A dovetail block 44 is provided at the bottom of the fixing block 42, and an extension block 45 is provided on the side of the fixing block 42 near the protective sleeve 3 for connecting the power tool 47.

[0039] Furthermore, the extension block 45 is connected to the power tool 47 via the sliding sleeve 46. The output shaft of the power tool 47 is connected to the rotary cutter 48. The cutter is mounted on the rear or inner side of the roller. The roller always rolls against the outer surface of the protective sleeve. When the cutter feeds inward, its maximum cutting depth is controlled by the threaded rod 43 and the scale adjustment structure.

[0040] Furthermore, the power tool 47 adopts a replaceable power supply assembly 49. The power tool 47 uses a low-voltage DC drive motor, and the motor output is connected to the cutter through a reduction gear transmission or a direct connection. The replaceable power supply assembly 49 uses a pluggable battery pack, which is convenient for quick replacement during continuous on-site operation.

[0041] Furthermore, the support plate 11 adopts a layered isolation combination of high-strength insulating material and metal load-bearing frame. The metal load-bearing components bear the rigidity and force transmission functions. The outer fixed handle 13 of the insulating support assembly 1 and the contact path near the live working area are equipped with an insulating layer to reduce the possibility of workers directly contacting conductive parts. The outer fixed handle 13 of the insulating support assembly 1 and the contact path near the live working area are equipped with an insulating layer to meet the comprehensive requirements for personal safety and equipment safety in live working environments.

[0042] Reference Figures 1-5 This is the third embodiment of the present invention. Unlike the above embodiments, this embodiment provides a method for cutting cable sleeves without power interruption, including the above-mentioned tool for cutting cable sleeves without power interruption, adjusting the opening of the clamping and positioning component 2 according to the outer diameter of the protective sleeve to be processed, and installing the tool at a predetermined position outside the protective sleeve 3. Step 1: Adjust the opening of the clamping and positioning assembly 2 according to the outer diameter of the protective sleeve 3 to be processed, and install the tool at a predetermined position outside the protective sleeve 3; since the clamping and positioning assembly 2 uses at least two points of contact to form a self-centering constraint, the tool can remain coaxial and stable with the protective sleeve 3 after installation; wherein, the clamping and positioning assembly 2 includes circumferentially distributed guide pressure rollers 21, the guide pressure rollers 21 are adjusted in position by an active adjustment component 22, the active adjustment component 22 is installed at the top of the reference support component 23; the active adjustment component 22 includes a knob 221 set at the top of the bearing plate 11, rotating the knob 221 drives the lead screw 222 to move, since the self-locking function of the lead screw 222 and the threaded sleeve 223 can drive the guide pressure rollers 21 to clamp the protective sleeve 3; the two guide pressure rollers 21 have a larger diameter on both sides and a smaller diameter in the middle, and are set in a waist drum shape, so that they form a two-point contact conformal fit with the outer wall of the protective sleeve 3, thereby generating a self-centering constraint effect during radial clamping; Step 2: Adjust the depth guide component 4 so that the cutting depth of the cutter does not exceed the set value of the wall thickness of the protective sleeve 3; the depth guide component 4 is finely set by the threaded rod 43 and the scale adjustment structure so that the blade only penetrates the wall thickness of the protective sleeve 3 or is close to the lower limit of the wall thickness, without touching the internal cable and accessory structure; wherein, the depth guide component 4 is set between the insulation bearing component 1 and the protective sleeve 3 to limit the actual cutting depth of the cutter. When the cutter feeds inward, its maximum cutting amount is controlled by the threaded rod 43 and the scale adjustment structure; Step 3: Start the power tool 47 to perform circumferential cutting, forming at least one circumferential cut; during circumferential cutting, while keeping the clamping state unchanged, the operator drives the tool to rotate around the outer circle of the sleeve, or drives the rotating cutter 48 to move relative to the annular guide rail, so that the cutter completes a cut around one or part of the circumference. The circumferential cut is mainly used to determine the cutting boundary; wherein, the insulating bearing assembly 1 includes a bearing plate 11, the bearing plate 11 is annular and has an opening D on one side, the opening D is used to fit into the side wall of the protective sleeve 3 from the radial direction, and the inner wall of the bearing plate 11 is provided with a sliding groove 12 for the fixed depth guide assembly 4 to perform circumferential movement to form the circumferential cut; Step 4: Switch to axial cutting mode and form at least one longitudinal slit along the axis of the protective sleeve 3. After the rotary cutter 48 switches from circumferential mode to axial mode, the rotary cutter 48 advances along a set linear trajectory, thereby forming a longitudinal slit that communicates with the circumferential slit.

[0043] Step 5: Stop the drive, release the clamp, and peel off the cut old protective sleeve 3 from the outside of the cable terminal. Depending on the removal requirements, if two longitudinal cuts have been made, the protective sleeve 3 forms an openable petal-like structure, which facilitates easy removal from the outside of the cable, and then the subsequent installation of the new sleeve can be carried out.

[0044] The tool is constructed entirely based on the insulating support assembly 1. In use, the tool is inserted radially into the outer side of the cable terminal protective sleeve 3 to be removed through the lateral opening D of the support plate 11. Subsequently, the clamping and positioning assembly 2 is operated, rotating the knob 221 at the top of the support plate 11. This drives the lead screw 222 to rotate within the threaded sleeve 223, utilizing the thread's self-locking function to move the guide rollers 21 radially until the circumferentially distributed guide rollers 21 simultaneously abut against and clamp the outer wall of the protective sleeve 3 from different directions. This achieves coaxial positioning of the tool and the sleeve while providing a stable reference for subsequent cutting.

[0045] Before cutting begins, the cutting depth must be preset using the depth guide assembly 4 based on the actual wall thickness of the protective sleeve 3. Specifically, the extension of the fixed block 42 is changed by adjusting the threaded rod 43 and the scale structure, thereby controlling the final cutting position of the rotating cutter 48 relative to the outer surface of the protective sleeve 3. Since the power tool 47 is mounted on the fixed block 42 via the sliding sleeve 46 and the extension block 45, and the dovetail block 44 at the bottom of the fixed block 42 provides stable guidance, the maximum cutting depth of the cutter is mechanically locked, thus ensuring that the blade only penetrates the sleeve wall thickness during the cutting process without damaging the internal cable insulation layer or stress control layer.

[0046] During the cutting operation, the power tool 47 is started, and its low-voltage DC motor drives the rotary cutter 48 to rotate at high speed. First, a circumferential cut is performed. The operator pushes the power tool 47, causing it to move circumferentially along the sliding groove 12 on the inner wall of the support plate 11 via the sliding block 41, thus forming a circumferential slit on the protective sleeve 3. This circumferential slit defines the removal boundary. Subsequently, the operation switches to axial cutting mode. The sliding block 41 and the power tool 47 assembly are repositioned, and then the rotary cutter 48 is pulled, causing the guide roller 21 to move axially on the protective sleeve 3. This drives the rotary cutter 48 to advance along the axial direction of the protective sleeve 3, forming one or more longitudinal slits. The longitudinal slits connect with the circumferential slits, dividing the protective sleeve into outwardly opening petal-like structures.

[0047] Throughout the cutting process, the high-strength insulation material of the insulating bearing component 1 and the insulation layer on the outer handle 13 effectively isolate the operator from the electrical connection with the live area; while the rotary cutter 48 is strictly limited by the depth guide component 4, and together with the tool's insulation design, they meet the safety requirements for uninterrupted power supply operation. After cutting is completed, the clamping and positioning component 2 is released, and the cut old protective sleeve can be safely peeled off from the cable terminal.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A tool for cutting cable conduits without power interruption, characterized in that: include, Insulating load-bearing component (1) is used as the basic support structure of the whole machine; The clamping and positioning assembly (2) is installed on the insulating bearing assembly (1) to radially clamp the cable terminal protective sleeve (3) and achieve relative coaxiality between the tool center and the sleeve center; A depth guide assembly (4) is disposed between the insulating bearing assembly (1) and the protective sleeve (3) to limit the actual cutting depth of the cutter; The depth guide assembly (4) drives the cutter to move circumferentially along the protective sleeve (3) to form a circumferential cut or drives the cutter to move linearly along the axis of the protective sleeve (3) to form a longitudinal cut.

2. The cable conduit cutting tool as described in claim 1, characterized in that: The insulating bearing assembly (1) includes a bearing plate (11), which is annular and has an opening on one side for being fitted into the side wall of the protective sleeve (3) from the radial direction; The inner wall of the bearing plate (11) is provided with a sliding groove (12) for the fixed depth guide assembly (4) to perform circumferential movement to form a circumferential cut.

3. The cable conduit cutting tool as described in claim 2, characterized in that: The clamping and positioning assembly (2) includes circumferentially distributed guide rollers (21), the guide rollers (21) are positioned by an active adjustment member (22), and the active adjustment member (22) is installed on the side wall of the reference support member (23); The active adjustment component (22) includes a knob (221) set at the top of the support plate (11). Rotating the knob (221) drives the lead screw (222) to move. Due to the self-locking function of the lead screw (222) and the threaded sleeve (223), the guide pressure roller (21) can be driven to clamp the protective sleeve (3).

4. The cable conduit cutting tool as described in claim 2, characterized in that: The depth guide assembly (4) includes a sliding block (41) disposed inside the sliding groove (12), and a limiting groove (A) is formed between the sliding block (41) and the moving plate (B) and connected to the lower plate of the bearing plate (11).

5. The cable conduit cutting tool as described in claim 4, characterized in that: The depth guide assembly (4) also includes a fixed block (42) disposed on the side wall of the sliding block (41). The side wall of the fixed block (42) adopts a threaded rod (43) and a scale adjustment structure for fine setting of the cutting depth according to the protective sleeve (3) of different materials and thicknesses.

6. The cable conduit cutting tool as described in claim 5, characterized in that: The bottom end of the fixing block (42) is provided with a dovetail block (44), and the side of the fixing block (42) near the protective sleeve (3) is provided with an extension block (45).

7. The cable conduit cutting tool as described in claim 6, characterized in that: The extension block (45) is connected to the power tool (47) via a sliding sleeve (46), and the output shaft of the power tool (47) is connected to the rotary cutter (48).

8. The cable conduit cutting tool as described in claim 7, characterized in that: The power tool (47) uses a replaceable power supply assembly (49). The power tool (47) uses a low-voltage DC drive motor. The motor output is connected to the cutter through a speed reduction transmission or a direct connection. The replaceable power supply assembly (49) uses a pluggable battery pack.

9. The uninterrupted power cutting cable conduit tool as described in claim 2 or 8, characterized in that: The bearing plate (11) adopts a layered isolation combination of high-strength insulating material and metal force-bearing skeleton. The metal force-bearing component undertakes the functions of stiffness and force transmission. The outer side of the insulating bearing component (1) is fixed with a handle (13) and the contact path near the live working area is provided with an insulating layer.

10. A method for cutting cable conduits without power interruption, characterized in that: The cable conduit cutting tool according to any one of claims 1 to 9 also includes, Adjust the opening of the clamping and positioning assembly according to the outer diameter of the protective sleeve to be processed, and install the tool at the predetermined position outside the protective sleeve; Adjust the depth guide assembly to ensure that the cutting depth of the cutter does not exceed the set value of the protective sleeve wall thickness; The electric drive assembly is activated to perform circumferential cutting, forming at least one circumferential slit; Switch to axial cutting mode and form at least one longitudinal cut along the axis of the protective sleeve; Stop the drive, release the clamp, and peel off the cut old protective sleeve from the outside of the cable terminal.

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