An automated high voltage cable insulation grinding device and method

Abstract

This invention discloses an automated grinding device and method for high-voltage cable insulation, including a traveling mechanism for moving along the high-voltage cable and a grinding mechanism for grinding the insulation layer of the high-voltage cable. The grinding mechanism is fixedly connected to the traveling mechanism and includes a grinding cover, grinding belts, a grinding drive mechanism for driving the grinding belts to reciprocate, and a rotation drive mechanism for driving the grinding belts to rotate around the axis of the high-voltage cable. Two sets of grinding belts are provided, with different abrasive particle sizes. The arrangement direction of the two sets of grinding belts is parallel to the axis of the high-voltage cable, and each set includes two symmetrically arranged grinding belts. This automated grinding device for high-voltage cable insulation is equipped with grinding actuators of different roughness, and can automatically complete continuous grinding from coarse to fine in a single axial movement, significantly reducing the frequency of belt replacement and greatly improving the continuity and overall efficiency of the grinding operation.

Description

Technical Field

[0001] This invention relates to the field of cable processing technology, specifically to an automated grinding device and method for high-voltage cable insulation. Background Technology

[0002] Cable insulation refers to the critical material layer specifically wrapped around the outside of the cable conductor. Its main function is to provide both electrical insulation and mechanical protection. This material can effectively prevent current from leaking out of the conductor, thereby ensuring that the cable will not experience potential safety accidents such as short circuits or leakage during normal operation. In addition, the insulation layer also has a certain mechanical strength, which can withstand various external mechanical forces, such as tension, compression, and bending, thereby protecting the internal conductor from physical damage. It can be said that cable insulation plays a vital and fundamental role in ensuring the overall performance and operational safety of the cable, and is an indispensable and important component of the cable structure.

[0003] Currently, the installation of high-voltage cables, whether continuous or terminal, requires stripping the cable layer by layer according to construction requirements. However, due to the high temperatures during cable production, the semi-conductive layer and the main insulation layer that need to be stripped may fuse together. Therefore, during cable termination, cutting is required to scrape off the semi-conductive layer, including part of the main insulation layer. This stripping process leaves rough surface marks on the main insulation layer, which must be smooth according to cable construction requirements. Therefore, after the semi-conductive layer is stripped, a scraper or glass is generally used to roughly smooth the rough surface before an electric grinder is used for polishing. For example, patent application CN 120680399 A discloses a cable insulation polishing device and method.

[0004] However, existing cable insulation polishing techniques still have shortcomings:

[0005] Existing grinding equipment can usually only provide a single roughness. If different surface roughnesses are required, the grinding equipment or grinding components must be replaced, resulting in cumbersome operation, low efficiency, and difficulty in meeting diverse construction needs. Summary of the Invention

[0006] The purpose of this invention is to overcome the above-mentioned problems and provide an automated grinding device for high-voltage cable insulation. This automated grinding device for high-voltage cable insulation is equipped with grinding actuators of different roughness, which can automatically complete continuous grinding from coarse to fine in a single axial movement, significantly reducing the frequency of sanding belt replacement and greatly improving the continuity and overall efficiency of grinding operations.

[0007] Another objective of this invention is to provide an automated grinding method for high-voltage cable insulation.

[0008] The objective of this invention is achieved through the following technical solution:

[0009] An automated grinding device for high-voltage cable insulation includes a traveling mechanism for traveling on a high-voltage cable and a grinding mechanism for grinding the insulation layer of the high-voltage cable.

[0010] The grinding mechanism is fixedly connected to the walking mechanism. The grinding mechanism includes a grinding cover, a grinding belt, a grinding drive mechanism for driving the grinding belt to reciprocate, and a rotation drive mechanism for driving the grinding belt to rotate around the axis of the high-voltage cable.

[0011] The abrasive belts are provided in two sets, with different abrasive particle sizes. The two sets of abrasive belts are arranged in a direction parallel to the axis of the high-voltage cable. Each set of abrasive belts includes two symmetrically arranged abrasive belts.

[0012] In a preferred embodiment of the present invention, the grinding drive mechanism includes a grinding drive motor and a grinding transmission assembly. The grinding transmission assembly is provided in two sets and is used to transmit power to two grinding belts located on the same side of different sets. Each set of grinding transmission assemblies includes a grinding mounting shaft, a grinding transmission pulley assembly, and a telescopic mounting arm assembly. The grinding mounting shafts of the same set of grinding transmission assemblies are provided in two sets and are fixedly connected to the rotating disk of the rotation drive mechanism.

[0013] The same set of grinding drive pulley assemblies is provided in two sets, and each set of grinding drive pulley assemblies includes three grinding drive pulleys; two of the grinding drive pulleys of the grinding drive pulley assembly are rotatably mounted on two grinding mounting shafts respectively, and the other grinding drive pulley is rotatably mounted on the free end of the telescopic mounting arm assembly; two grinding sand belts on the same side are respectively mounted on the two sets of grinding drive pulley assemblies.

[0014] The telescopic mounting arm assembly is provided in two sets. Each set of telescopic mounting arm assemblies includes a first telescopic frame, a second telescopic frame, and an adaptive telescopic spring. One end of the first telescopic frame is rotatably connected to one of the grinding mounting shafts, and the other end of the first telescopic frame is connected to the second telescopic frame via a telescopic structure. The other grinding transmission pulley of the grinding transmission pulley assembly is rotatably mounted on the second telescopic frame. The adaptive telescopic spring abuts against the first and second telescopic frames. With the above structure, under the drive of the grinding drive motor, each set of grinding transmission assemblies can synchronously transmit power to the two grinding belts on the same side, so that the two grinding belts located on the same side of the cable move synchronously and cyclically under the drive of the grinding drive motor. Furthermore, two abrasive belts of different grit sizes on the same side grind the same half-circumference area of ​​the cable insulation layer. The coarse abrasive belt first roughens the area, and the fine abrasive belt then finishes the same area, achieving continuous grinding from coarse to fine on the cable's half-circumference area in a single pass. Simultaneously, two abrasive belts on the other side perform the same continuous grinding on the other half-circumference area of ​​the cable. This combination of both sides allows for multi-stage grinding of the entire cable surface in one pass, significantly improving grinding efficiency. In addition, the adaptive telescopic spring in the telescopic mounting arm assembly allows the abrasive belts to adaptively maintain contact pressure with the cable insulation surface during grinding. Even with minor roundness deviations or localized unevenness on the cable surface, the second telescopic frame can adaptively extend and retract relative to the first telescopic frame, ensuring that the abrasive belts always maintain appropriate pressure against the cable surface, thus guaranteeing the stability and consistency of the grinding effect.

[0015] In a preferred embodiment of the present invention, the grinding mechanism further includes a forward and backward driving mechanism for driving the grinding belt closer to or away from the insulation layer of the high-voltage cable, and the forward and backward driving mechanism is provided in two sets.

[0016] The forward and backward driving mechanism is used to drive two different sets of sanding belts located on the same side to approach or move away from the high-voltage cable insulation layer; when one set of sanding belts approaches the high-voltage cable insulation layer, the other set of sanding belts moves away from the high-voltage cable insulation layer.

[0017] Furthermore, the forward and backward driving mechanism includes a forward and backward driving motor and a synchronous reverse transmission assembly, wherein the forward and backward driving motor is fixedly mounted on the rotating disk of the rotation driving mechanism;

[0018] The synchronous reverse transmission assembly includes a driving bevel gear and a driven bevel gear. The driving bevel gear is fixedly mounted on the output shaft of the forward and reverse drive motor. Two driven bevel gears are symmetrically and rotate in opposite directions on the grinding mounting shaft corresponding to the first telescopic frame. The two driven bevel gears are respectively fixedly connected to the first telescopic frame of the two sets of telescopic mounting arm assemblies. With the above structure, when the traveling mechanism travels along the cable axis to perform grinding operations, given the characteristic of different grit grinding belts being arranged sequentially along the axial direction, the coarse grinding belt located in front (upstream in the traveling direction) can be controlled to be close to the cable surface for coarse grinding according to the needs of the current grinding stage. At the same time, the fine grinding belt located behind (downstream in the traveling direction) can be temporarily controlled to be away from the cable surface to avoid the fine grinding belt participating in the operation before the coarse grinding is completed, which would result in an unnatural transition of surface roughness or premature wear of the fine grinding belt. When the traveling mechanism advances to the point where the coarse grinding process is basically completed and the fine grinding area is about to be reached, the state of the forward and reverse drive mechanism is switched so that the fine grinding belt is close to the cable surface for fine grinding, while the coarse grinding belt that has completed the coarse grinding task is moved away from the cable surface. In this way, through the coordinated control of two sets of forward and backward drive mechanisms, flexible switching between working and non-working states of grinding belts with different grit sizes is achieved, ensuring that the process sequence from coarse to fine is not disturbed, while ensuring that each level of grinding is carried out under the best processing conditions, further improving the final surface quality.

[0019] Furthermore, the first telescopic frame is equipped with a pressure sensor for real-time detection of grinding pressure, with the sensor's detection end close to the second telescopic frame. Through real-time feedback from the pressure sensor, the control system can dynamically adjust the output of the forward and backward drive motors using an adaptive algorithm, thereby achieving precise closed-loop control of the grinding pressure with an accuracy of ±0.5N. Furthermore, precise constant pressure control effectively prevents damage to the insulation layer or accelerated abrasive belt wear due to excessive grinding pressure, and also avoids insufficient grinding and substandard surface roughness due to insufficient pressure. Combined with a multi-stage abrasive belt automatic switching mechanism (i.e., the sequential operation of two sets of abrasive belts with different grit sizes), it ultimately ensures that the surface roughness of the insulation layer consistently reaches the fine grinding requirement of <0.4μm, meeting the stringent process standards for insulation layer surface quality in high-voltage cable accessories.

[0020] In a preferred embodiment of the present invention, a non-contact real-time roughness detection module is further included. This module includes a high-precision camera, which is fixedly mounted on the rotating disk of the rotation drive mechanism and faces the high-voltage cable being polished. Thus, by using the non-contact real-time roughness detection module, the high-precision camera performs real-time imaging detection of the surface of the high-voltage cable being polished. Based on the detection data, the control system can dynamically adjust the tension of the corresponding abrasive belt, precisely controlling the contact pressure between the abrasive belt and various local areas of the cable surface, thereby achieving targeted adaptive polishing of locally rough areas. This solution significantly improves the roughness uniformity of the cable's entire circumference, avoiding the problem of excessive local roughness caused by inconsistent initial surface conditions or uneven force during polishing, ensuring that the entire circumference surface meets the set precision requirements, and further improving the reliability and consistency of polishing quality.

[0021] In a preferred embodiment of the present invention, a negative pressure dust collection mechanism is further included. This mechanism comprises a negative pressure suction pipe and a negative pressure unit. The negative pressure suction pipe extends into the grinding hood to adsorb and collect the dust generated during grinding. This effectively prevents dust from accumulating inside the grinding hood, thus avoiding impacts on the normal operation and lifespan of the grinding belt. It also significantly reduces dust dispersion into the surrounding environment, improves the working environment in enclosed or confined spaces, and reduces the impact of grinding dust on the health of workers, demonstrating the environmental friendliness and user-friendly design of the present invention.

[0022] An automated grinding method for high-voltage cable insulation includes the following steps:

[0023] The walking mechanism is installed on the high-voltage cable, and the grinding mechanism is fitted on the outside of the high-voltage cable insulation layer to be ground. Two sets of grinding belts with different abrasive particle sizes are arranged along the axial direction of the high-voltage cable, and the two grinding belts in each set are symmetrically distributed on both sides of the high-voltage cable insulation layer.

[0024] Start the grinding drive mechanism to drive the two sets of grinding belts to reciprocate; start the rotation drive mechanism to drive the grinding belts to rotate around the axis of the high-voltage cable.

[0025] The traveling mechanism is activated, causing it to drive the grinding mechanism to travel along the axial direction of the high-voltage cable. During the travel, two sets of grinding belts with different abrasive particle sizes pass through the same circumferential area of ​​the high-voltage cable insulation layer in sequence. The set of grinding belts with larger abrasive particle sizes first performs coarse grinding on the area, while the set of grinding belts with smaller abrasive particle sizes then performs fine grinding on the area. The continuous grinding from coarse to fine is automatically completed during a single axial travel.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] 1. This invention sets two sets of abrasive belts with different abrasive grit sizes in the grinding mechanism, and the two sets of belts are arranged parallel to the axis of the high-voltage cable. This allows the grinding device to grind the surface of the cable insulation layer with different grit sizes in a single pass along the cable axis, automatically completing continuous processing from coarse to fine without stopping to change belts. This significantly reduces auxiliary operation time and greatly improves the continuity and overall efficiency of the grinding operation.

[0028] 2. The two abrasive belts in the same group of the present invention act symmetrically on both sides of the cable insulation layer, which can apply a uniform grinding force to the cable surface during the grinding process, effectively avoiding the problem of uneven force caused by grinding on one side, ensuring the consistency of the surface roughness of the cable insulation layer after grinding, and improving the grinding quality.

[0029] 3. By setting two sets of grinding belts with different grit sizes, this invention can achieve continuous switching between coarse grinding and fine grinding in one pass according to actual construction requirements. It is suitable for grinding cable insulation layers with different surface roughness requirements and has good versatility and adaptability. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of the automated high-voltage cable insulation polishing device of the present invention.

[0031] Figure 2 This is a three-dimensional structural diagram of the grinding belt, grinding drive mechanism, forward and backward drive mechanism, and high-voltage cable of the present invention.

[0032] Figure 3 This is a front view of the grinding belt, grinding drive mechanism, forward and backward drive mechanism and high-voltage cable of the present invention, with the gear protective shell hidden.

[0033] Figure 4-5 This is a three-dimensional structural diagram of the automated high-voltage cable insulation polishing device of the present invention in two different states.

[0034] Figure 6 This is a three-dimensional structural diagram of the grinding belt, grinding transmission pulley assembly, and telescopic mounting arm assembly of the present invention. Detailed Implementation

[0035] To enable those skilled in the art to fully understand the technical solutions of the present invention, the present invention will be further described below in conjunction with embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0036] Example 1

[0037] The high-voltage cable insulation automated polishing device of this embodiment includes a walking mechanism for walking on the high-voltage cable and a polishing mechanism for polishing the insulation layer of the high-voltage cable; specifically, the specific structure of the walking mechanism can be found in CN120680399A.

[0038] Combination Figure 1 The grinding mechanism is fixedly connected to the walking mechanism. The grinding mechanism includes a grinding cover 1, a grinding belt 2, a grinding drive mechanism for driving the grinding belt 2 to reciprocate, and a rotation drive mechanism for driving the grinding belt 2 to rotate around the axis of the high-voltage cable. Specifically, the specific structure of the rotation drive mechanism can be found in CN120680399A.

[0039] Combination Figure 2-6 The grinding belt 2 is provided in two sets, and the abrasive particles of the two sets of grinding belt 2 are different, so that different roughness can be produced. The arrangement direction of the two sets of grinding belt 2 is parallel to the axis of the high-voltage cable. Each set of grinding belt 2 includes two symmetrically arranged grinding belts 2.

[0040] Combination Figure 2-6 The grinding drive mechanism includes a grinding drive motor and a grinding transmission assembly. The grinding transmission assembly has two sets, each used to transmit power to two grinding belts 2 located on the same side but in different groups. Each grinding transmission assembly includes a grinding mounting shaft 3, a grinding transmission pulley assembly, and a telescopic mounting arm assembly. Two grinding mounting shafts 3 are provided in the same group, both fixedly connected to the rotating disk 4 of the rotation drive mechanism. Two sets of grinding transmission pulley assemblies are provided in the same group, each including three grinding transmission pulleys 5. Two of the grinding transmission pulleys 5 are rotatably mounted on the two grinding mounting shafts 3, while the other... The grinding drive pulley 5 is rotatably mounted on the free end of the telescopic mounting arm assembly; two grinding belts 2 on the same side are respectively mounted on two sets of grinding drive pulley assemblies; there are two sets of telescopic mounting arm assemblies in the same set, each set including a first telescopic frame 6, a second telescopic frame 7, and an adaptive telescopic spring 8. One end of the first telescopic frame 6 is rotatably connected to one of the grinding mounting shafts 3, and the other end of the first telescopic frame 6 is connected to the second telescopic frame 7 through a telescopic structure. The other grinding drive pulley 5 of the grinding drive pulley assembly is rotatably mounted on the second telescopic frame 7; the adaptive telescopic spring 8 abuts against the first telescopic frame 6 and the second telescopic frame 7. Specifically, other structures of the grinding drive mechanism can be found in CN120680399A.

[0041] With the above structure, driven by the grinding drive motor, each grinding transmission component can synchronously transmit power to the two grinding belts 2 on the same side, so that the two grinding belts 2 on the same side of the cable move synchronously and cyclically under the drive of the grinding drive motor. Furthermore, the two grinding belts 2 with different grit sizes on the same side grind the same half-circumference area of ​​the cable insulation layer. That is, the coarse grinding belt first performs rough processing on the front area, and the fine grinding belt then performs fine processing on the same area. Thus, continuous grinding from coarse to fine is achieved on the half-circumference area of ​​the cable in a single pass. At the same time, the two grinding belts 2 on the other side perform the same continuous grinding on the other half-circumference area of ​​the cable. The cooperation of both sides can complete the multi-level grinding operation of the entire circumference surface of the cable in one go, which greatly improves the grinding efficiency. Furthermore, the adaptive telescopic spring 8 in the telescopic mounting arm assembly enables the abrasive belt 2 to adaptively maintain the contact pressure with the cable insulation layer surface during the abrasion process. Even if there are slight roundness deviations or local unevenness on the cable surface, the second telescopic frame 7 can also adaptively extend and retract relative to the first telescopic frame 6, ensuring that the abrasive belt 2 always adheres to the cable surface with appropriate pressure, thereby ensuring the stability and consistency of the abrasion effect.

[0042] Combination Figure 2-6 The grinding mechanism also includes a forward and backward driving mechanism for driving the grinding sand belt 2 to approach or move away from the high-voltage cable insulation layer. The forward and backward driving mechanism is provided in two sets. The forward and backward driving mechanism is used to drive two grinding sand belts 2 of different sets located on the same side to approach or move away from the high-voltage cable insulation layer. When one set of grinding sand belts 2 is close to the high-voltage cable insulation layer, the other set of grinding sand belts 2 moves away from the high-voltage cable insulation layer.

[0043] Combination Figure 2-6The forward and backward drive mechanism includes a forward and backward drive motor 9 and a synchronous reverse transmission assembly. The forward and backward drive motor 9 is fixedly mounted on the rotating disk 4 of the rotation drive mechanism. The synchronous reverse transmission assembly includes a driving bevel gear 10 and a driven bevel gear 11. The driving bevel gear 10 is fixedly mounted on the output shaft of the forward and backward drive motor 9. Two driven bevel gears 11 are provided and rotated symmetrically in opposite directions on the grinding mounting shaft 3 corresponding to the first telescopic frame 6. The two driven bevel gears 11 are respectively fixedly connected to the first telescopic frame 6 of the two sets of telescopic mounting arm assemblies. With the above structure, when the traveling mechanism moves along the cable axis to perform grinding operations, given the characteristic of different grit grinding belts 2 being arranged sequentially along the axial direction, the coarse grinding belt located at the front (upstream in the traveling direction) can be controlled to be close to the cable surface for coarse grinding, while the fine grinding belt located at the rear (downstream in the traveling direction) can be temporarily kept away from the cable surface to avoid the fine grinding belt participating in the operation before the coarse grinding is completed, which would result in an unnatural transition of surface roughness or premature wear of the fine grinding belt. When the traveling mechanism advances to the point where the coarse grinding process is basically completed and the fine grinding area is about to be reached, the state of the forward and backward drive mechanism is switched so that the fine grinding belt is close to the cable surface for fine grinding, while the coarse grinding belt that has completed its coarse grinding task is moved away from the cable surface. In this way, through the coordinated control of the two sets of forward and backward drive mechanisms, the flexible switching between the working and non-working states of the different grit grinding belts 2 is realized, ensuring that the process sequence from coarse to fine is not disturbed, and ensuring that each level of grinding is carried out under optimal processing conditions, further improving the final surface quality.

[0044] Combination Figure 2-6 The first telescopic frame 6 is equipped with a pressure sensor 12 for real-time detection of grinding pressure, and the detection end of the pressure sensor 12 is close to the second telescopic frame 7. Through the real-time feedback of the pressure sensor 12, the control system can dynamically adjust the output of the forward and backward drive motor 9 in combination with an adaptive algorithm, thereby performing precise closed-loop control of the grinding pressure, with a control accuracy of ±0.5N. Furthermore, precise constant pressure control can effectively avoid damage to the insulation layer or accelerated wear of the sanding belt due to excessive grinding pressure, and can also avoid insufficient grinding and substandard surface roughness due to insufficient pressure. With the multi-stage sanding belt automatic switching mechanism (i.e., the sequential operation of two sets of sanding belts with different grit sizes), it can ultimately ensure that the surface roughness of the insulation layer stably reaches the fine grinding requirement of <0.4μm, meeting the stringent process standards for the surface quality of the insulation layer in high-voltage cable accessories.

[0045] Combination Figure 2-6This embodiment also includes a non-contact real-time roughness detection module, which includes a high-precision camera 13. The high-precision camera 13 is fixedly mounted on the rotating disk 4 of the rotation drive mechanism and faces the high-voltage cable being polished. Thus, by setting up the non-contact real-time roughness detection module, the high-precision camera 13 performs real-time imaging detection of the surface of the high-voltage cable being polished. Based on the detection data, the control system can dynamically adjust the tension of the corresponding abrasive belt, precisely controlling the contact pressure between the abrasive belt and various local areas of the cable surface, thereby achieving targeted adaptive polishing of locally rough areas. This solution significantly improves the roughness uniformity of the cable's entire circumference, avoiding the problem of excessive local roughness caused by inconsistent initial surface conditions or uneven force during polishing, ensuring that the entire circumference surface meets the set precision requirements, and further improving the reliability and consistency of polishing quality.

[0046] Combination Figure 2-6 This embodiment also includes a negative pressure dust collection mechanism (not shown in the figure), which includes a negative pressure suction pipe and a negative pressure unit. The negative pressure suction pipe extends into the grinding hood 1 to adsorb and collect the dust generated during grinding. This effectively prevents dust from accumulating inside the grinding hood 1 and affecting the normal operation and service life of the grinding belt 2. It also significantly reduces dust dispersion into the surrounding environment, improves the working environment in enclosed or confined spaces, and reduces the impact of grinding dust on the health of workers, demonstrating the environmental friendliness and user-friendly design of this invention.

[0047] Example 2

[0048] The automated grinding method for high-voltage cable insulation in this embodiment includes the following steps:

[0049] In actual use, first install the walking mechanism on the high-voltage cable, then fit the grinding mechanism on the outside of the cable insulation layer to be ground, and arrange two sets of grinding sand belts 2 with different grit sizes along the cable axis. One set is a coarse grinding sand belt and the other set is a fine grinding sand belt. The two grinding sand belts 2 in each set are symmetrically distributed on the upper and lower sides (or left and right sides) of the cable. After preparation, start the device.

[0050] During the grinding process, the traveling mechanism drives the entire grinding mechanism to move along the axial direction of the high-voltage cable. At the same time, the grinding drive motor starts and transmits power synchronously to two grinding belts 2 located on the same side of the cable through two sets of grinding transmission components. This causes the two grinding belts 2 (one coarse grinding belt and one fine grinding belt) located on the same side of the cable to move synchronously and cyclically on their respective grinding transmission pulley assemblies.

[0051] Under the action of the forward and backward drive mechanism, when the traveling mechanism is in the initial stage of axial travel, the coarse abrasive belt located in front of the traveling direction is driven by the forward and backward drive motor 9. Through the active bevel gear 10, it drives two symmetrically arranged driven bevel gears 11 to rotate synchronously in the opposite direction. This drives the two sets of telescopic mounting arm assemblies, which are fixedly connected to the two driven bevel gears 11 respectively, to swing synchronously in the opposite direction. This causes the coarse abrasive belt to come close to the surface of the high-voltage cable insulation layer and begin coarse grinding of this half-circumference area. At the same time, the fine abrasive belt located behind the traveling direction swings synchronously in the opposite direction and moves away from the cable surface, temporarily not participating in grinding. During the process of the coarse abrasive belt coming close to the cable surface, the adaptive telescopic spring 8 causes the second telescopic frame 7 to adaptively extend and retract relative to the first telescopic frame 6, ensuring that the coarse abrasive belt always adheres to the cable surface with appropriate pressure. At the same time, the pressure sensor 12 installed on the first telescopic frame 6 detects the grinding pressure in real time and feeds it back to the control system. The control system, combined with the adaptive algorithm, dynamically adjusts the output of the forward and backward drive motor 9 to achieve precise closed-loop control of the grinding pressure.

[0052] As the traveling mechanism continues to advance, when the coarse grinding belt has essentially completed its rough grinding of the half-circumference area and the fine grinding belt is about to reach it, the forward / backward drive motor 9 reverses. This reverses the rotation via the synchronous reverse transmission assembly, driving the two sets of telescopic mounting arm assemblies to swing in opposite directions. This causes the coarse grinding belt to move away from the cable surface and exit its working state, while the fine grinding belt moves closer to the cable surface and enters its working state, beginning the fine grinding of that area. Thus, during a single axial travel, two grinding belts 2 of different grit sizes located on the same side of the cable continuously grind the cable insulation layer, achieving automatic transition from coarse to fine grinding.

[0053] During the aforementioned polishing process, the rotary drive mechanism drives the polishing hood 1 and all the polishing belts 2 inside it, the telescopic mounting arm assembly, and the forward and backward drive mechanism to slowly rotate around the axis of the high-voltage cable, allowing the polishing belts 2 to fully cover different circumferential positions of the cable insulation layer. Simultaneously, the high-precision camera 13 in the non-contact roughness real-time detection module rotates synchronously with the rotating disk 4, performing real-time imaging detection of each circumferential position on the surface of the cable being polished. The control system dynamically adjusts the tension of the corresponding sanding belts based on the detection data, achieving targeted adaptive polishing of local rough areas, ensuring uniform roughness throughout the circumference and meeting the set accuracy requirements. The negative pressure dust collection mechanism operates continuously throughout the polishing process, collecting the dust generated during polishing in real time through a negative pressure suction pipe extending into the polishing hood 1.

[0054] Ultimately, during a single journey along the cable axis, this device automatically completes the entire continuous grinding process of the cable insulation layer surface from coarse to fine grinding, without the need to stop midway to change the abrasive belt. Furthermore, through pressure closed-loop control and real-time roughness detection and feedback, it ensures that the surface roughness of the ground cable insulation layer meets the stringent process standards of high-voltage cable accessories.

[0055] The above are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above content. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. An automated grinding device for high-voltage cable insulation, characterized in that, This includes a traveling mechanism for moving on high-voltage cables and a grinding mechanism for grinding the insulation layer of high-voltage cables. The grinding mechanism is fixedly connected to the walking mechanism. The grinding mechanism includes a grinding cover, a grinding belt, a grinding drive mechanism for driving the grinding belt to reciprocate, and a rotation drive mechanism for driving the grinding belt to rotate around the axis of the high-voltage cable. The abrasive belts are provided in two sets, with different abrasive particle sizes. The two sets of abrasive belts are arranged in a direction parallel to the axis of the high-voltage cable. Each set of abrasive belts includes two symmetrically arranged abrasive belts.

2. The automated high-voltage cable insulation polishing device according to claim 1, characterized in that, The grinding drive mechanism includes a grinding drive motor and a grinding transmission assembly. The grinding transmission assembly is provided in two sets, which are used to transmit power to two grinding belts located on the same side of different sets. Each set of grinding transmission assemblies includes a grinding mounting shaft, a grinding transmission pulley assembly, and a telescopic mounting arm assembly. The grinding mounting shafts of the same set of grinding transmission assemblies are provided in two sets and are fixedly connected to the rotating disk of the rotation drive mechanism.

3. The automated high-voltage cable insulation polishing device according to claim 2, characterized in that, The same set of grinding drive pulley assemblies has two sets, and each set of grinding drive pulley assemblies includes three grinding drive pulleys; two of the grinding drive pulleys of the grinding drive pulley assembly are rotatably mounted on two grinding mounting shafts, and the other grinding drive pulley is rotatably mounted on the free end of the telescopic mounting arm assembly; two grinding sand belts on the same side are respectively mounted on the two sets of grinding drive pulley assemblies.

4. The automated high-voltage cable insulation polishing device according to claim 3, characterized in that, The same set of telescopic mounting arm assemblies has two sets. Each set of telescopic mounting arm assemblies includes a first telescopic frame, a second telescopic frame, and an adaptive telescopic spring. One end of the first telescopic frame is rotatably connected to one of the grinding mounting shafts, and the other end of the first telescopic frame is connected to the second telescopic frame through a telescopic structure. The other grinding transmission pulley of the grinding transmission pulley assembly is rotatably mounted on the second telescopic frame. The adaptive telescopic spring abuts against the first telescopic frame and the second telescopic frame.

5. The automated high-voltage cable insulation polishing device according to claim 4, characterized in that, The grinding mechanism also includes a forward and backward drive mechanism for driving the grinding belt to approach or move away from the high-voltage cable insulation layer, and the forward and backward drive mechanism is provided in two sets. The forward and backward driving mechanism is used to drive two different sets of sanding belts located on the same side to approach or move away from the high-voltage cable insulation layer; when one set of sanding belts approaches the high-voltage cable insulation layer, the other set of sanding belts moves away from the high-voltage cable insulation layer.

6. The automated high-voltage cable insulation polishing device according to claim 5, characterized in that, The forward and backward drive mechanism includes a forward and backward drive motor and a synchronous reverse transmission assembly. The forward and backward drive motor is fixedly mounted on the rotating disk of the rotation drive mechanism. The synchronous reverse transmission assembly includes a driving bevel gear and a driven bevel gear. The driving bevel gear is fixedly mounted on the output shaft of the forward and reverse drive motor. The driven bevel gears are provided in two and rotate symmetrically in opposite directions on the grinding mounting shaft corresponding to the first telescopic frame. The two driven bevel gears are respectively fixedly connected to the first telescopic frame of the two sets of telescopic mounting arm assemblies.

7. The automated high-voltage cable insulation polishing device according to claim 4, characterized in that, The first telescopic frame is equipped with a pressure sensor for real-time detection of grinding pressure, and the detection end of the pressure sensor is close to the second telescopic frame.

8. The automated high-voltage cable insulation polishing device according to claim 1, characterized in that, It also includes a non-contact real-time roughness detection module, which includes a high-precision camera that is fixedly mounted on the rotating disk of the rotation drive mechanism and faces the high-voltage cable being polished.

9. The automated high-voltage cable insulation polishing device according to claim 1, characterized in that, It also includes a negative pressure dust collection mechanism, which includes a negative pressure suction pipe and a negative pressure machine. The negative pressure suction pipe extends into the grinding hood to absorb and collect the dust generated during grinding.

10. A method for automated grinding of high-voltage cable insulation applied to the automated grinding device for high-voltage cable insulation according to any one of claims 1-9, characterized in that, Includes the following steps: The walking mechanism is installed on the high-voltage cable, and the grinding mechanism is fitted on the outside of the high-voltage cable insulation layer to be ground. Two sets of grinding belts with different abrasive particle sizes are arranged along the axial direction of the high-voltage cable, and the two grinding belts in each set are symmetrically distributed on both sides of the high-voltage cable insulation layer. Start the grinding drive mechanism to drive the two sets of grinding belts to reciprocate; start the rotation drive mechanism to drive the grinding belts to rotate around the axis of the high-voltage cable. The traveling mechanism is activated, causing it to drive the grinding mechanism to travel along the axial direction of the high-voltage cable. During the travel, two sets of grinding belts with different abrasive particle sizes pass through the same circumferential area of ​​the high-voltage cable insulation layer in sequence. The set of grinding belts with larger abrasive particle sizes first performs coarse grinding on the area, while the set of grinding belts with smaller abrasive particle sizes then performs fine grinding on the area. The continuous grinding from coarse to fine is automatically completed during a single axial travel.

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