A cable insulation layer sanding device

Abstract

The application provides a cable insulation layer sanding device, which comprises a split wheel disc connected with a driving wheel, the wheel disc defines an annular mounting groove, a sleeve and a pressing mechanism are arranged in the mounting groove, a polishing head is arranged in the sleeve, and the pressing mechanism is configured to press the polishing head against the surface of the insulation layer of the cable when the wheel disc rotates. The polishing head is driven by the driving wheel to rotate synchronously with the wheel disc, and the polishing head is pressed against the surface of the insulation layer of the cable by the pressing mechanism, so that the cylindrical degree and the concentricity of the cable insulation layer can be ensured.

Description

Technical Field

[0001] This application relates to the field of cable polishing technology, and more specifically, to a cable insulation layer sanding device. Background Technology

[0002] In the fabrication of 110 kV cable heads, the surface smoothness, cylindricity, and concentricity of the conductor are crucial engineering indicators, encompassing multiple electrical test data. The quality of the insulation surface sanding directly affects the cable's stable operation. Previously, insulation sanding was performed using a flexible belt sander, sanding the insulation surface in sections and pieces. The most fatal flaw of this method is its inability to guarantee the concentricity and cylindricity of the cable insulation, resulting in uneven insulation thickness. Thinner areas of the insulation have higher electric field strength and are more prone to breakdown. Currently, there are no better dedicated sanders available besides belt sanders. Therefore, the inventors have proposed a cable insulation sanding device. Summary of the Invention

[0003] The purpose of this application is to provide a cable insulation layer sanding device that can ensure the cylindricity and concentricity of the cable insulation layer during sanding, and has the advantage of being easy to operate.

[0004] The embodiments of this application are implemented as follows:

[0005] This application provides a cable insulation sanding device, including a split-type wheel disk that is connected to a drive wheel. The wheel disk defines an annular mounting groove, and a sleeve and a clamping mechanism are provided in the mounting groove. A grinding head is inserted into the sleeve, and the clamping mechanism is configured to press the grinding head against the surface of the cable insulation layer when the wheel disk rotates.

[0006] This application uses a drive wheel to drive the grinding head to rotate synchronously with the wheel, and uses a clamping mechanism to press the grinding head against the surface of the cable insulation layer, which can ensure the cylindricity and concentricity of the cable insulation layer during grinding.

[0007] In an alternative implementation, the wheel is formed by joining two mounting bases.

[0008] In an optional embodiment, the mounting base includes an inner side plate and an outer side plate that enclose the mounting groove.

[0009] In an optional implementation, both the inner and outer side plates are arranged coaxially with the wheel.

[0010] In an alternative embodiment, the sleeve is arranged radially along the wheel.

[0011] In an optional embodiment, the grinding head is provided with a connecting rod that passes through the inside of the sleeve.

[0012] In an optional embodiment, the clamping mechanism includes a centrifugal block, a guide post, a mounting bracket, and a swing arm. The guide post is fixed between the inner and outer side plates. The sleeve has clearance grooves on both sides. The mounting bracket is fixed to the outer side plate and passes through the clearance grooves. The centrifugal block is slidably sleeved on the sleeve and the guide post. A first spring in a compressed state is sleeved on the guide post between the centrifugal block and the outer side plate. The inner end of the swing arm is hinged to the outer end of the connecting rod. The outer end of the swing arm passes through the clearance groove and is slidably sleeved on the mounting bracket. A second spring in a compressed state is sleeved on the mounting bracket between the two swing arms.

[0013] In an optional implementation, the guide post and the sleeve are arranged parallel to each other.

[0014] In an optional implementation, the guide posts are arranged symmetrically on both sides of the sleeve.

[0015] In an alternative implementation, the swing arms are arranged symmetrically on both sides of the sleeve. Attached Figure Description

[0016] Exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be understood that the embodiments described below are for illustrative purposes only and are not intended to limit the scope of this application. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of a cable insulation sanding apparatus according to an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the mounting base according to an embodiment of this application;

[0019] Figure label:

[0020] 10. Drive wheels;

[0021] 20. Roulette;

[0022] 30. Adjusting rod;

[0023] 40. Cables;

[0024] 11. Belt;

[0025] 21. Mounting base;

[0026] 22. Sleeve;

[0027] 23. Grinding head;

[0028] 24. Clamping mechanism;

[0029] 25. Connecting pin;

[0030] 31. Screw;

[0031] 32. Guide wheel;

[0032] 33. Threaded cylinder;

[0033] 211. Inner side panel;

[0034] 212. Outer side plate;

[0035] 213. Mounting slot;

[0036] 221. Clearance groove;

[0037] 231. Connecting rod;

[0038] 241. Centrifuge block;

[0039] 242. Guide post;

[0040] 243. The first spring;

[0041] 244. Arm swing;

[0042] 245. Mounting bracket;

[0043] 246. The second spring. Detailed Implementation

[0044] Example 1

[0045] Please see Figures 1-2 In this embodiment, the cable insulation sanding device includes a split wheel 20 that is connected to the drive wheel 10. The wheel 20 defines an annular mounting groove 213. A sleeve 22 and a pressing mechanism 24 are provided in the mounting groove 213. A grinding head 23 is inserted in the sleeve 22. The pressing mechanism 24 is configured to press the grinding head 23 against the surface of the insulation layer of the cable 40 when the wheel 20 rotates.

[0046] It should be noted that both the drive wheel 10 and the disc 20 have grooves on their circumferential surfaces for engaging the belt 11. The drive wheel 10 drives the disc 20 to rotate via the belt 11. To ensure the tension of the belt 11, an adjusting rod 30 is provided between the drive wheel 10 and the disc 20. The adjusting rod 30 includes screws 31 that are screwed opposite to each other at both ends of the threaded cylinder 33. The two screws 31 rotate in opposite directions to the threaded cylinder 33, so that when the threaded cylinder 33 is rotated, the two screws 31 can be driven to move in opposite directions, thereby tightening between the drive wheel 10 and the disc 20 to ensure the tension of the belt 11.

[0047] Specifically, an arc-shaped wheel frame is provided at the end of the screw 31, and guide wheels 32 are provided at both ends of the wheel frame. The guide wheels 32 are slidably engaged in the aforementioned slots to ensure the stability of the overall installation position of the adjusting rod 30.

[0048] It should also be noted that the wheel 20 in this embodiment is formed by splicing two identical mounting bases 21. As an example, the two mounting bases 21 are locked together by a connecting pin to form a circular wheel 20.

[0049] In addition, the mounting base 21 includes an inner side plate 211 and an outer side plate 212 that enclose the mounting groove 213, and both the inner side plate 211 and the outer side plate 212 are coaxially arranged with the wheel 20. The sleeve 22 is fixed between the inner side plate 211 and the outer side plate 212, and the sleeve 22 is arranged radially along the wheel 20. As an example, the sleeve 22 is constructed as a hollow rectangular tube, and the inner cavity of the sleeve 22 is rectangular in cross section. The left and right side walls of the sleeve 22 are provided with clearance grooves 221, and the clearance grooves 221 extend along the longitudinal direction of the sleeve 22. A connecting rod 231 is fixed on the outer wall of the grinding head 23. The connecting rod 231 is constructed as a rectangle in cross section. The connecting rod 231 is inserted into the sleeve 22 in a shape that fits the shape, and the connecting rod 231 can slide inside the sleeve 22.

[0050] Furthermore, the clamping mechanism 24 includes a centrifugal block 241, a guide post 242, a mounting bracket 245, and a swing arm 244. The guide post 242 is fixed between the inner side plate 211 and the outer side plate 212, and is arranged parallel to the sleeve 22. The guide posts 242 are symmetrically arranged on the left and right sides of the sleeve 22. The mounting bracket 245 is fixed to the outer side plate 212 and passes through the clearance groove 221. The centrifugal block 241 is slidably fitted onto the sleeve 22 and the guide post 242. The guide post 242 is positioned between the centrifugal block 241 and the outer side plate 212. A first spring 243 in a compressed state is fitted on the upper sleeve. The inner end of the swing arm 244 is located inside the sleeve 22 and is hinged to the outer end of the connecting rod 231. The outer end of the swing arm 244 extends to the outside of the sleeve 22 after passing through the relief groove 221 and is slidably fitted on the mounting bracket 245. As an example, a through hole is provided at the outer end of the swing arm 244, and the mounting bracket 245 passes through the aforementioned through hole. The two swing arms 244 are symmetrically arranged on both sides of the sleeve 22, and a second spring 246 in a compressed state is fitted on the mounting bracket 245 between the two swing arms 244.

[0051] It should be understood that when the drive wheel 10 drives the wheel 20 to rotate, under the action of centrifugal force, the centrifugal block 241 will move along the sleeve 22 toward the outer plate 212, and further compress the first spring 243. When the centrifugal block 241 contacts the swing arm 244, the swing arm 244 will swing toward the sleeve 22 under the push of the centrifugal block 241, so that the connecting rod 231 moves toward the cable 40 under the push of the swing arm 244, until the grinding head 23 is in close contact with the insulation layer of the cable 40.

[0052] After grinding is completed, the first spring 243 pushes the centrifugal block 241 toward the inner plate 211, and the second spring 246 pushes the outer end of the swing arm 244 outward, and can pull the grinding head 23 toward the inner plate 211 through the connecting rod 231, so that the grinding head 23 is detached from the cable 40.

[0053] In this embodiment, the grinding head 23 is driven by the drive wheel to rotate synchronously with the wheel 20. The centrifugal block 241 slides outward along the sleeve 22 to push the two swing arms 244 inward to the inside of the sleeve 22, thereby pressing the grinding head 23 against the surface of the insulation layer of the cable 40, ensuring the cylindricity and concentricity of the cable insulation layer grinding.

[0054] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A cable insulation layer sanding device, characterized in that, The device includes a split-type wheel disk connected to a drive wheel, the wheel disk defining an annular mounting groove; a sleeve arranged radially along the wheel disk is provided in the mounting groove, a radially sliding grinding head is inserted through the sleeve, and a connecting rod is provided on the grinding head through the sleeve; the sleeve is arranged radially along the wheel disk; a centrifugal clamping mechanism is also provided in the mounting groove, the clamping mechanism including a centrifugal block, a guide column, a mounting bracket, a swing arm, a first spring, and a second spring; when the wheel disk rotates, the centrifugal block slides outward against the first spring under the action of centrifugal force, and pushes the swing arm to retract, thereby pushing the grinding head to press radially against the surface of the cable insulation layer along the sleeve via the connecting rod; after rotation stops, the first spring and the second spring reset, causing the grinding head to release the cable insulation layer. The cable includes a wheel formed by splicing two mounting bases. Each mounting base includes an inner plate and an outer plate that enclose the mounting groove. Both the inner and outer plates are coaxially arranged with the wheel. A guide post is fixed between the inner and outer plates. A clearance groove is provided on both sides of the sleeve. The mounting bracket is fixed to the outer plate and passes through the clearance groove. The centrifugal block is slidably sleeved on the sleeve and the guide post. A first spring in a compressed state is sleeved on the guide post between the centrifugal block and the outer plate. The inner end of the swing arm is hinged to the outer end of the connecting rod. The outer end of the swing arm passes through the clearance groove and is slidably sleeved on the mounting bracket. A second spring in a compressed state is sleeved on the mounting bracket between the two swing arms.

2. The cable insulation sanding device as described in claim 1, characterized in that, The guide post is arranged parallel to the sleeve.

3. The cable insulation sanding device as described in claim 2, characterized in that, The guide posts are arranged symmetrically on both sides of the sleeve.

4. The cable insulation sanding device as described in claim 3, characterized in that, The swing arms are arranged symmetrically on both sides of the sleeve.

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