A polishing device that moves along the surface of a cable

Abstract

The application relates to the field of cable polishing, and discloses a polishing device moving along the surface of a cable, which comprises a self-adaptive four-direction moving device and a rotary polishing device, and the two are combined to play a role; the self-adaptive four-direction moving device adopts bidirectional screw rods matched with synchronous transmission of walking profiling wheel sets and fastening profiling wheel sets, can realize uniform clamping of the cable in four directions by using only one clamping motor, and the profiling wheels made of rubber increase the contact area, are stable in clamping, can effectively resist peeling shear reaction force, prevent the device from rotating or deviating, and have a certain elastic deformation amount, can be used to correct the variable bending radius of the cable during operation, the self-adaptive four-direction moving device and the rotary polishing device are concentrically matched, when the cable is slightly bent, the front and rear concentric close matching can also adapt to the bending deformation, the rotary polishing device and the cable are coaxial and concentric, and the bending section polishing is realized.

Description

Technical Field

[0001] This invention relates to the field of cable polishing, specifically to a polishing device that moves along the surface of a cable. Background Technology

[0002] Traditional cable insulation polishing has long relied on operators using handheld polishing machines. This process is not only labor-intensive but also time-consuming. Because the polishing process demands high precision, operators must possess extensive practical experience to accurately control the pressure applied by the polishing tool and the precise length of polishing; otherwise, the final quality of the insulation layer can be easily affected. Furthermore, manual polishing often fails to ensure comprehensive and uniform treatment of the cable's surface, especially in complex or confined environments such as tunnels and pipelines. The bottom or sides of the cable are often obstructed by poor visibility, leading to missed areas and impacting the overall polishing effect and the reliability of subsequent processes.

[0003] For example, Chinese Patent Publication No. CN115229626A discloses a flexible polishing robot based on visual feedback and its usage method, including a worktable, a polishing groove in the middle of the worktable, a pipe feeding assembly for moving the pipe up and down at the top of the worktable, a dustproof bucket at the bottom of the worktable, and a polishing assembly for polishing the outer wall of the pipe on the lower side of the worktable and inside the dustproof bucket. The flexible polishing robot based on visual feedback and its usage method of the present invention, by adjusting the distance between the polishing wheels at the left and right ends by the distance adjustment assembly, increases the contact area between the polishing disc and the pipe, which helps to make the polishing belt fit more closely to the surface of the pipe and further improves the polishing efficiency.

[0004] Although various types and structures of automated auxiliary operation devices have gradually emerged and are widely used in the stripping and polishing processes of cable insulation layers, most of these automated devices use a rigid fixed frame structure as the main support. The drive system controls the polishing belt to move precisely and stably along the preset frame track, thereby completing the polishing action on the surface of the insulation layer.

[0005] While these devices largely solve the problems of uneven surface, poor quality consistency, and high labor intensity and difficulty that are often caused by traditional manual polishing methods, they still have significant limitations in actual complex engineering scenarios. In particular, existing devices often cannot effectively adapt to and properly address the actual problems of uneven insulation layers, localized bending, and irregular shapes caused by cable deformation due to on-site laying or long-term operation, resulting in poor polishing effects or incomplete coverage. Furthermore, most current devices generally employ a sanding belt for repeated polishing, and the polishing method is mostly based on single-sided contact polishing, which still needs further improvement in terms of polishing uniformity, efficiency, and adaptability to complex contours. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a polishing device that moves along the surface of a cable to solve the aforementioned problems.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions.

[0008] A polishing device that moves along the surface of a cable includes an adaptive four-way moving device and a rotary polishing device, wherein the adaptive four-way moving device and the rotary polishing device are concentrically connected. The adaptive four-way moving device includes a clamping moving device, a moving device housing, and a moving device driving assembly. The clamping and moving device includes a bidirectional lead screw, a lead screw-side right-angle converter, a traveling mechanism, a traveling contour wheel set, and a fastening contour wheel set. The bidirectional lead screws are combined with each other through the lead screw-side right-angle converter and arranged in a square right-angle shape. The traveling mechanism is movably connected to the bidirectional lead screws on the left and right sides. The traveling contour wheel set is connected to the traveling mechanism, and the fastening contour wheel set is movably connected to the bidirectional lead screws on the upper and lower sides. The traveling mechanism includes a traveling-side right-angle converter, a ball spline, and a traveling-side gear transmission assembly. The output end of the traveling-side right-angle converter is connected to the traveling-side gear transmission assembly. A ball spline passes through the traveling-side right-angle converter. The traveling-side gear transmission assembly is dynamically connected to the bidirectional lead screws on both the left and right sides, and the output end of the traveling-side gear transmission assembly is connected to the traveling contour wheel assembly. The adaptive four-way moving device uses bidirectional lead screws in conjunction with the traveling contour wheel assembly and the fastening contour wheel assembly for synchronous transmission. Only one clamping motor is needed to achieve uniform clamping of the cable in four directions. Furthermore, the rubber contour wheels increase the contact area, ensuring stable clamping and effectively resisting stripping reaction forces. To prevent the device from rotating or shifting, the rubber-material contour wheel itself has a certain elastic deformation, which can be used to correct and adapt to the changes in the bending arc of the cable during operation. The walking mechanism is driven by a ball spline and a walking motor. Even when the position of the clamping wheel is adjusted due to changes in the cable diameter, the power transmission can still be maintained without interruption. The four walking wheels are driven synchronously, with large traction force and smooth movement, adapting to cables of different diameters and ensuring continuous operation. The adaptive four-way moving device and the rotary grinding device work concentrically together. When there is a slight bend in the cable, the front and rear concentric tight cooperation can also adapt to the bending deformation, ensuring that the rotary grinding device and the cable are coaxial and concentric, realizing the grinding of the bent section.

[0009] Preferably, the mobile device drive assembly includes a clamping motor and a traveling motor. The clamping motor is equipped with a clamping gear set, and the clamping motor transmits power to the right-angle converter on the lead screw side through the clamping gear set. The traveling motor is fixed on the right-angle converter on the traveling side, and the output end of the traveling motor is connected to a ball spline.

[0010] Preferably, the rotary polishing device includes a rotary drive mechanism, a polishing wheel, a polishing structure, and a dustproof housing. The rotary drive mechanism is connected to the housing of the mobile device, the polishing structure is meshed with the rotary drive mechanism, the dustproof housing is connected to the polishing structure, and the polishing wheel is located at the center of the dustproof housing.

[0011] Preferably, the rotary drive mechanism includes a drive motor, a drive housing, a drive gear set, a drive limiting wheel, and a rotary gear disk. The drive motor is fixed on the housing of the mobile device, and the output end of the drive motor is connected to the drive gear set. The drive gear set is disposed inside the drive housing. The drive limiting wheel is distributed in a ring inside the drive housing. The rotary gear disk is fixed on one side of the grinding housing and meshes with the drive gear set.

[0012] Preferably, the rotating gear disk is provided with disc teeth and rotating grooves, the disc teeth mesh with the drive gear set, and the rotating grooves are fitted to the drive limiting wheel for limiting connection.

[0013] Preferably, the grinding structure includes a grinding gear, a grinding tensioning shaft, a grinding tensioning wheel shaft, a support cantilever, a grinding wheel, a torsion spring, an internal grinding gear, and a grinding synchronization wheel set. The grinding gear meshes with the internal grinding gear, which is located within the inner ring of the grinding structure and moves synchronously with the rotating gear disc. One end of the grinding tensioning shaft is connected to the grinding gear, and the other end is connected to the support cantilever. One end of the grinding tensioning wheel shaft is connected to the grinding synchronization wheel set, and the other end is connected to the support cantilever. The grinding wheel sleeve... The torsion spring is mounted on the grinding tensioning wheel shaft, with one end connected to the support cantilever and the other end connected to the grinding structure. By utilizing the meshing of the fixed grinding internal gear and the rotating grinding gear, the revolution and rotation of the grinding wheel are achieved simultaneously, and the cable is ground synchronously and evenly around. This avoids the uneven grinding phenomenon that is easy to occur when grinding on one side. The bottom grinding wheel, the top grinding wheel, and the polishing wheel work together to rotate and grind, completing the three processes of rough grinding, fine grinding, and polishing, thereby improving grinding efficiency.

[0014] Preferably, the grinding wheel includes a bottom grinding wheel and a top grinding wheel, wherein the bottom grinding wheel is for coarse grinding and the top grinding wheel is for fine grinding.

[0015] Preferably, the contouring wheels located in the middle of both the walking contouring wheel set and the fastening contouring wheel set are made of rubber. Compared to existing technologies, this invention discloses a polishing device that moves along the surface of a cable, including an adaptive four-way moving device and a rotary polishing device, which are used in combination to achieve their function. ① The adaptive four-way moving device adopts a two-way screw combined with the walking and fastening contour wheel sets for synchronous transmission. Only one clamping motor is needed to achieve uniform clamping of the cable in four directions. The rubber contour wheels increase the contact area, ensuring stable clamping and effectively resisting the stripping reaction force, preventing the device from rotating or shifting. In addition, the rubber contour wheels themselves have a certain elastic deformation, which can be used to correct and adapt to the changes in the bending curvature of the cable during operation. ② The walking mechanism is driven by ball splines and a walking motor. It can maintain uninterrupted power transmission even when the position of the clamping wheel is adjusted due to changes in cable diameter. The four walking wheels are driven synchronously, with large traction force and smooth movement. It can adapt to cables of different diameters and ensure continuous operation. ③ The adaptive four-way moving device and the rotary grinding device work together concentrically. When the cable has a slight bend, the front and rear concentric tight cooperation can also adapt to the bending deformation, ensuring that the rotary grinding device and the cable are coaxial and concentric, and realizing the grinding of the bent section. ④ By using the meshing of a fixed internal grinding gear and a rotating grinding gear, the grinding wheel can work simultaneously on both its revolution and rotation, and the cable can be ground synchronously and evenly around its perimeter, avoiding the uneven grinding phenomenon that is easy to occur when grinding on one side. ⑤ The bottom grinding wheel, top grinding wheel, and polishing wheel are combined to rotate and grind, completing the three processes of rough grinding, fine grinding, and polishing, thus improving grinding efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the grinding device that moves along the cable surface according to the present invention. Figure 2 This is a schematic diagram of the adaptive four-way moving device of the present invention; Figure 3 This is a schematic diagram of the internal structure of the adaptive four-way moving device of the present invention; Figure 4 This is a schematic diagram of the rotary polishing device of the present invention; Figure 5 This is a schematic diagram of the internal structure of the rotary grinding device of the present invention; Figure 6 This is an exploded view of the structure of the rotary grinding device of the present invention. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] A polishing device that moves along the surface of a cable includes an adaptive four-way moving device 1 and a rotary polishing device 2, wherein the adaptive four-way moving device 1 and the rotary polishing device 2 are concentrically connected. The adaptive four-way moving device 1 includes a clamping moving device 11, a moving device housing 12, and a moving device driving assembly 13. The clamping and moving device 11 includes a bidirectional lead screw 111, a lead screw-side right-angle converter 112, a traveling mechanism 113, a traveling contour wheel set 114, and a fastening contour wheel set 115. The bidirectional lead screws 111 are combined with each other through the lead screw-side right-angle converter 112 and arranged in a square right-angle shape. The traveling mechanism 113 is movably connected to the bidirectional lead screws 111 on the left and right sides. The traveling contour wheel set 114 is connected to the traveling mechanism 113. The fastening contour wheel set 115 is movably connected to the bidirectional lead screws 111 on the upper and lower sides. The walking mechanism 113 includes a walking-side right-angle converter 1131, a ball spline 1132, and a walking-side gear transmission group 1133. The output end of the walking-side right-angle converter 1131 is connected to the walking-side gear transmission group 1133. The ball spline 1132 passes through the walking-side right-angle converter 1131. The walking-side gear transmission group 1133 is dynamically connected to the bidirectional lead screws 111 on the left and right sides, and the output end of the walking-side gear transmission group 1133 is connected to the walking contour wheel group 114.

[0019] The mobile device drive assembly 13 includes a clamping motor 131 and a walking motor 132. The clamping motor 131 is provided with a clamping gear set 1311, and the clamping motor 131 transmits power to the lead screw side right angle converter 112 through the clamping gear set 1311. The walking motor 132 is fixed on the walking side right angle converter 1131, and the output end of the walking motor 132 is connected to the ball spline 1132.

[0020] The rotary polishing device 2 includes a rotary drive mechanism 21, a polishing wheel 22, a polishing structure 23, and a dustproof housing 24. The rotary drive mechanism 21 is connected to the housing 12 of the mobile device. The polishing structure 23 is meshed with the rotary drive mechanism 21. The dustproof housing 24 is connected to the polishing structure 23. The polishing wheel 22 is located at the center of the dustproof housing 24.

[0021] The rotary drive mechanism 21 includes a drive motor 211, a drive housing 212, a drive gear set 213, a drive limiting wheel 214, and a rotary gear disk 215. The drive motor 211 is fixed on the housing 12 of the moving device, and the output end of the drive motor 211 is connected to the drive gear set 213. The drive gear set 213 is disposed inside the drive housing 212. The drive limiting wheel 214 is distributed in a ring inside the drive housing 212. The rotary gear disk 215 is fixed on one side of the grinding housing and meshes with the drive gear set 213.

[0022] The rotating gear disk 215 is provided with disk teeth 2151 and rotating groove 2152. The disk teeth 2151 mesh with the drive gear set 213, and the rotating groove 2152 fits into the drive limiting wheel 214 for limiting connection.

[0023] The grinding structure 23 includes a grinding gear 231, a grinding tensioning shaft 232, a grinding tensioning wheel shaft 233, a support cantilever 234, a grinding wheel 235, a torsion spring 236, an internal grinding gear 237, and a grinding synchronization wheel set 238. The grinding gear 231 meshes with the internal grinding gear 237, which is located on the inner ring of the grinding structure 23 and moves synchronously with the rotating gear disk 215. One end of the grinding tensioning shaft 232 is connected to the grinding gear 231, and the other end is connected to the support cantilever 234. One end of the grinding tensioning wheel shaft 233 is connected to the grinding synchronization wheel set 238, and the other end is connected to the support cantilever 234. The grinding wheel 235 is sleeved on the grinding tensioning wheel shaft 233, and the torsion spring 236 is sleeved on the grinding tensioning shaft 232, with one end connected to the support cantilever 234 and the other end connected to the grinding structure 23.

[0024] The grinding wheel 235 includes a bottom grinding wheel 2351 and a top grinding wheel 2352. The bottom grinding wheel 2351 is for coarse grinding, and the top grinding wheel 2352 is for fine grinding.

[0025] Both the walking contour wheel assembly 114 and the fastening contour wheel assembly 115 have contour wheels made of rubber in the middle.

[0026] Operating Mode: The operator first places the device on the end of the cable to be polished, allowing the cable to pass through the center of the adaptive four-way moving device 1 and the rotary polishing device 2. The clamping motor 131 is then started. The clamping gear set 1311 on the motor output shaft drives the right-angle converter 112 on the lead screw side to rotate. This rotation is transmitted through the four corner lead screw side right-angle converters 112 to the bidirectional lead screws 111 on the upper, lower, left, and right sides, causing them to rotate synchronously. The traveling contour wheel set 114 and the fastening contour wheel set 115 also move towards the center. The rubber contour wheels press against the cable surface. When the pressure reaches the set value (which can be determined by current detection, an external limit switch, or manual judgment, not elaborated here), the clamping motor 131 stops and self-locks. At this point, the device is secured to the cable. Because the rubber contour wheels adapt to the arc surface of the cable, even with a slight oxide layer or unevenness on the surface, sufficient contact area and friction are ensured.

[0027] After clamping is complete, the travel motor 132 is started. The rotation of the travel motor 132 directly drives the ball spline 1132, which then transmits torque to the travel-side right-angle converter 1131. After being reduced in speed by the travel-side gear transmission group 1133, it drives the travel contour wheel group 114 to roll. In this device, the travel contour wheel group 114 is the driving wheel, and the fastening contour wheel group 115 is the driven wheel. Together, they synchronously complete clamping and guiding. When the travel motor 132 rotates forward, the device moves forward along the cable; when it rotates in reverse, it moves backward. The operator can control the device to move to the starting position of the area to be polished according to the polishing needs.

[0028] Once the device is in place, the rotary grinding device 2 begins to work. The drive motor 211 starts and drives the rotating gear disk 215 to rotate through the drive gear set 213. At the same time, since the grinding gear 231 meshes with the stationary grinding internal gear 237, the grinding gear 231 also starts to rotate under the drive of the rotating gear disk 215. The rotation of the grinding gear 231 is transmitted through the grinding synchronous wheel set 238, and the grinding wheel 235 rotates to perform grinding work on the cable.

[0029] The elastic force applied by the torsion spring 236 will keep the grinding wheel 235 pressed against the surface of the cable to be ground through the support cantilever 234. As the rotating toothed disc 215 revolves, the two sets of symmetrical grinding wheels 235 will rotate around the cable once. The bottom grinding wheel 2351 with a grit of 240# is responsible for rough grinding, and the top grinding wheel 2352 with a grit of 600# is responsible for fine grinding.

[0030] The bottom grinding wheel 2351 first contacts the cable and grinds away the thicker excess material. Then, the top grinding wheel 2352 refines the grinding of the same area. While the device moves slowly forward, the grinding wheel 235 also rotates at high speed and revolves around the cable. This compound motion ensures that the grinding marks on the entire circumference and axis of the cable are uniform and intersecting in a grid pattern, which is beneficial for stress control of subsequent accessories.

[0031] Finally, the polishing wheel 22 installed at the center of the dustproof housing 24 performs a gentle polishing on the freshly ground surface, completely eliminating polishing marks and achieving the desired polishing effect. Throughout the process, the dust generated is collected by the dustproof housing 24.

[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A polishing device that moves along the surface of a cable, characterized in that: It includes an adaptive four-way moving device (1) and a rotary grinding device (2), wherein the adaptive four-way moving device (1) and the rotary grinding device (2) are concentrically connected. The adaptive four-way moving device (1) includes a clamping moving device (11), a moving device housing (12), and a moving device driving assembly (13). The clamping and moving device (11) includes a bidirectional lead screw (111), a lead screw side right angle converter (112), a traveling mechanism (113), a traveling contour wheel set (114), and a fastening contour wheel set (115). The bidirectional lead screws (111) are combined with each other through the lead screw side right angle converter (112) and arranged in a square right angle. The traveling mechanism (113) is connected to the bidirectional lead screws (111) on the left and right sides in a follow-up manner. The traveling contour wheel set (114) is connected to the traveling mechanism (113). The fastening contour wheel set (115) is connected to the bidirectional lead screws (111) on the upper and lower sides in a follow-up manner. The walking mechanism (113) includes a walking-side right-angle converter (1131), a ball spline (1132), and a walking-side gear transmission group (1133). The output end of the walking-side right-angle converter (1131) is connected to the walking-side gear transmission group (1133). The ball spline (1132) passes through the walking-side right-angle converter (1131). The walking-side gear transmission group (1133) is dynamically connected to the double-acting lead screws (111) on the left and right sides. The output end of the walking-side gear transmission group (1133) is connected to the walking contour wheel group (114).

2. The polishing device that moves along the cable surface according to claim 1, characterized in that: The mobile device drive assembly (13) includes a clamping motor (131) and a walking motor (132). The clamping motor (131) is provided with a clamping gear set (1311), and the clamping motor (131) transmits power to the lead screw side right angle converter (112) through the clamping gear set (1311). The walking motor (132) is fixed on the walking side right angle converter (1131), and the output end of the walking motor (132) is connected to the ball spline (1132).

3. The polishing device that moves along the cable surface according to claim 1, characterized in that: The rotary polishing device (2) includes a rotary drive mechanism (21), a polishing wheel (22), a polishing structure (23), and a dustproof shell (24). The rotary drive mechanism (21) is connected to the housing (12) of the mobile device. The polishing structure (23) is meshed with the rotary drive mechanism (21). The dustproof shell (24) is connected to the polishing structure (23). The polishing wheel (22) is located at the center of the dustproof shell (24).

4. The polishing device that moves along the cable surface according to claim 3, characterized in that: The rotary drive mechanism (21) includes a drive motor (211), a drive housing (212), a drive gear set (213), a drive limiting wheel (214), and a rotary gear disc (215). The drive motor (211) is fixed on the housing (12) of the moving device, and the output end of the drive motor (211) is connected to the drive gear set (213). The drive gear set (213) is set inside the drive housing (212). The drive limiting wheel (214) is distributed in a ring inside the drive housing (212). The rotary gear disc (215) is fixed on one side of the grinding housing and meshes with the drive gear set (213).

5. The polishing device that moves along the cable surface according to claim 4, characterized in that: The rotating gear disk (215) is provided with disc teeth (2151) and rotating groove (2152). The disc teeth (2151) mesh with the drive gear set (213), and the rotating groove (2152) fits into the drive limiting wheel (214) for limiting connection.

6. The polishing device that moves along the cable surface according to claim 3, characterized in that: The grinding structure (23) includes a grinding gear (231), a grinding tension shaft (232), a grinding tension wheel shaft (233), a support cantilever (234), a grinding wheel (235), a torsion spring (236), an internal grinding gear (237), and a grinding synchronization gear set (238). The grinding gear (231) meshes with the internal grinding gear (237). The internal grinding gear (237) is located on the inner ring of the grinding structure (23) and moves synchronously with the rotating gear disc (215). The grinding tensioning shaft (232) is connected to a grinding gear (231) at one end and a support cantilever (234) at the other end. The grinding tensioning wheel shaft (233) is connected to a grinding synchronous wheel set (238) at one end and a support cantilever (234) at the other end. The grinding wheel (235) is sleeved on the grinding tensioning wheel shaft (233). The torsion spring (236) is sleeved on the grinding tensioning shaft (232), and is connected to the support cantilever (234) at one end and the grinding structure (23) at the other end.

7. The polishing device that moves along the cable surface according to claim 6, characterized in that: The grinding wheel (235) includes a bottom grinding wheel (2351) and a top grinding wheel (2352). The bottom grinding wheel (2351) is for coarse grinding, and the top grinding wheel (2352) is for fine grinding.

8. The polishing device that moves along the cable surface according to claim 1, characterized in that: Both the walking contour wheel assembly (114) and the fastening contour wheel assembly (115) have contour wheels made of rubber in the middle.

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