Automatic lead coating flexible coating hand for high-voltage cable joint

Abstract

The invention discloses an automatic lead coating flexible coating hand for a high-voltage cable joint, which comprises a flexible coating head arranged at the far end, a heating module connected with the flexible coating head and a hollow motor connected with the heating module, and a hollow rotor in the hollow motor is connected with a feeding flange. According to the structure of the flexible coating hand for lead sealing of the high-voltage cable connector, manual operation can be replaced to complete lead sealing work of the high-voltage cable connector in the maximum range, and a more suitable coating mechanism is provided for automatic lead sealing of a high-voltage cable.

Description

Technical Field

[0001] This invention relates to the field of lead sealing technology for high-voltage cable joints, and in particular to an automatic flexible lead-enameling applicator for high-voltage cable joints. Background Technology

[0002] In power system operations, after high-voltage cable joints are connected, lead sealing is generally required to ensure a seal and short circuit between the prefabricated joint and the cable's outer aluminum sheath. Traditionally, lead sealing involves operators heating the high-voltage cable's aluminum sheath with a flame while simultaneously melting the lead material to be used for sealing. Operators, wearing heat-resistant gloves and other protective gear, rely on their dexterity to perform the sealing work. The melting point of the lead used for sealing is between 180°C and 280°C, a relatively high temperature, requiring a high degree of concentration and skill from the operators to complete the sealing process to a satisfactory standard. Existing automated lead sealing equipment, due to the use of rigid materials, cannot match the level of manual operation. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings and defects of existing technologies in order to meet the requirements of lead sealing processes, and to provide an automatic lead-enameling flexible coating hand for high-voltage cable joints using flexible materials. The structure of this invention's flexible coating hand for lead sealing of high-voltage cable joints can replace manual labor to complete the lead sealing work of high-voltage cable joints to the greatest extent possible, providing a more suitable coating mechanism for automatic lead sealing of high-voltage cables.

[0004] An automatic lead-enameling flexible coating hand for high-voltage cable joints includes a flexible coating head arranged at a remote end, a heating module connected to the flexible coating head, and a hollow motor connected to the heating module. The hollow rotor inside the hollow motor is connected to a feeding flange.

[0005] Preferably, a feeding flange is connected to the near end of the hollow rotor away from the flexible coating head. The feeding flange is connected to a bearing by a fixed shaft and a nut. The three bearings, with different installation heights, form a spiral conveying mechanism, which together with the hollow rotor and the fixed shaft forms a lead material feeding mechanism.

[0006] Preferably, a lead material outlet pipe is embedded inside the flexible coating head at a position corresponding to the material pool.

[0007] Preferably, the heating module and the hollow motor are separated by a primary ceramic pad, and a ceramic sealing ring is provided in the central hole of the primary ceramic pad.

[0008] Preferably, the heating module includes two heating units stacked together, separated by a secondary ceramic pad.

[0009] Preferably, the heating unit includes a copper heating head and a heating element, wherein an annular groove is formed on the surface of the copper heating head, and the heating element is placed in the annular groove.

[0010] Preferably, the heating element is annular and is embedded in the annular groove.

[0011] Preferably, the copper heating head has a temperature sensor that is connected to an external temperature controller via a wire.

[0012] Preferably, the two heating units have different heating temperatures, with a temperature difference of 100 degrees, forming a stepped temperature difference.

[0013] Preferably, the flexible coating head is made of fluororubber and coated with nano-ceramic material.

[0014] The flexible coating hand structure of the present invention for sealing lead on high-voltage cable joints can replace human hands to complete the work of sealing lead on high-voltage cable joints to the greatest extent, and provides a more suitable coating mechanism for automatic lead sealing of high-voltage cables. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the automatic lead-enameling flexible coating hand for high-voltage cable joints according to the present invention.

[0016] Figure 2 This is a cross-sectional structural schematic diagram of the automatic lead-enameling flexible coating hand for high-voltage cable joints according to the present invention. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0018] See Figures 1 to 2 As shown in the exemplary embodiment of this application, the automatic lead-enameling flexible coating hand for high-voltage cable joints includes a flexible coating head 16 arranged at the far end, a heating module connected to the flexible coating head, and a hollow motor 1 connected to the heating module. The hollow rotor 2 inside the hollow motor is connected to the feeding flange 3. The surface of the flexible coating head is arc-shaped, specifically a concave arc shape.

[0019] In this embodiment, the hollow rotor 2 is connected to a feeding flange 3 at the end furthest from the flexible coating head. A bearing 5 is locked to the near end of the feeding flange 4 via a fixed shaft 5 and a nut 6. There are three bearings (arranged around the axis of the hollow rotor) at different installation heights, forming a spiral conveying mechanism. This mechanism, together with the hollow rotor and the fixed shaft, constitutes a lead material feeding mechanism. During operation, a hollow stepper motor drives the hollow rotor 2 to rotate, carrying the lead material 18 for feeding. The feeding flange 3 is fixed to the hollow rotor 2 with screws, the fixed shaft 4 is connected to the feeding flange 3, and the bearing 5 is mounted on the fixed shaft 4 and fixed by the nut 6.

[0020] In this embodiment of the application, a lead material outlet pipe 17 is embedded inside the flexible coating head, and the material pool outside the lead material outlet pipe 17 can be a groove formed on the arc-shaped surface.

[0021] In this embodiment, the heating module and the hollow motor 1 are separated by a primary ceramic pad 7, and the central hole of the primary ceramic pad 7 has a ceramic sealing ring 8. Specifically, the primary ceramic pad 7 is connected to the hollow motor 1 (stepper motor) via a nut post 9, and the ceramic sealing ring 8 is installed in the ceramic pad 7 to prevent heat leakage.

[0022] In this embodiment, the heating module includes two stacked heating units separated by a secondary ceramic pad 14. In this embodiment, the two heating units have different heating temperatures, differing by 100 degrees Celsius, creating a stepped heating temperature difference for the lead material 18. For example, the upper heating unit's heating temperature is controlled at approximately 150 degrees Celsius, while the lower heating unit's heating temperature is controlled at approximately 250 degrees Celsius.

[0023] In this embodiment, the heating unit includes a copper heating head 11 and a heating element 12. An annular groove is formed on the surface of the copper heating head, and the heating element 12 is placed in the annular groove. In this embodiment, the heating element is annular and embedded in the annular groove. In this embodiment, the copper heating head has a temperature sensor 12, which is connected to an external temperature controller 10 via a wire.

[0024] In this process, a connector 10 is embedded in the primary ceramic pad 7, and the copper heating head 11 is connected to the primary ceramic pad 7 through the connection of bolts 15 and connector 10.

[0025] In this embodiment, the flexible coating head is made of fluororubber and coated with nano-ceramics. It is connected to the copper heating head 11 by bolts. The structure of the flexible coating hand for sealing lead on high-voltage cable joints in this application uses flexible materials to replace hard materials and manual operation, resulting in better operation and sealing effect.

[0026] In this embodiment, the flexible coating hand used for sealing lead in high-voltage cable joints has a hollow structure inside, running through the entire device to form a lead material feeding channel for feeding lead material 18.

[0027] In this application, the lead material discharge pipe 17 is embedded in the flexible coating head 16. The flexible coating head 16 has a material pool in the middle of its arc-shaped surface. When the fed lead material 18 is heated to a molten state by the heating module, it gathers between the material pool on the surface of the flexible coating head and the workpiece 19 to be coated. The flexible coating head 16 is pressed down. Because the flexible coating head has a certain elasticity (hardness of about 60), the flexible coating head deforms and rotates. The molten lead material can then be applied to the workpiece 19 to be coated.

[0028] The flexible coating hand structure for sealing high-voltage cable joints in this embodiment of the invention can replace human hands to complete the sealing of high-voltage cable joints to the greatest extent, providing a more suitable coating mechanism for automatic sealing of high-voltage cables.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0030] Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of the equivalents of the claims be included within the invention.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic lead-enameling flexible coating hand for high-voltage cable joints, characterized in that, It includes a flexible coating head arranged at a remote end, a heating module connected to the flexible coating head, and a hollow motor connected to the heating module. The hollow rotor inside the hollow motor is connected to the feeding flange.

2. The automatic lead-enameling flexible coating hand for high-voltage cable joints according to claim 1, characterized in that, The hollow rotor is connected to a feeding flange at its proximal end away from the flexible coating head. The feeding flange is connected to a bearing by a fixed shaft and a nut. The three bearings, with different installation heights, form a spiral conveying mechanism, which together with the hollow rotor and the fixed shaft forms a lead material feeding mechanism.

3. The automatic lead-enameling flexible coating hand for high-voltage cable joints according to claim 1, characterized in that, A lead material outlet pipe is embedded inside the flexible coating head at the position corresponding to the material pool.

4. The automatic lead-enameling flexible coating hand for high-voltage cable joints according to claim 1, characterized in that, The heating module and the hollow motor are separated by a primary ceramic pad, and a ceramic sealing ring is provided in the central hole of the primary ceramic pad.

5. The automatic lead-enameling flexible coating hand for high-voltage cable joints according to claim 1, characterized in that, The heating module includes two heating units stacked together, separated by a secondary ceramic pad.

6. The automatic lead-enameling flexible coating hand for high-voltage cable joints according to claim 5, characterized in that, The heating unit includes a copper heating head and a heating element. The surface of the copper heating head forms an annular groove, and the heating element is placed in the annular groove.

7. The automatic lead-enameling flexible coating hand for high-voltage cable joints according to claim 6, characterized in that, The heating element is annular and is embedded in the annular groove.

8. The automatic lead-enameling flexible coating hand for high-voltage cable joints according to claim 6, characterized in that, The copper heating head contains a temperature sensor, which is connected to an external temperature controller via a wire.

9. The automatic lead-enameling flexible coating hand for high-voltage cable joints according to claim 5, characterized in that, The two heating units have different heating temperatures, with a temperature difference of 100 degrees, forming a stepped temperature difference.

10. The automatic lead-enameling flexible coating hand for high-voltage cable joints according to claim 1, characterized in that, The flexible coating head is made of fluororubber and coated with nano-ceramics.

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