An automatic lead-bushing device suitable for high-voltage cable joint lead-bushing process

Abstract

The present disclosure belongs to the technical field of high-voltage cables, and provides an automatic lead casting device suitable for a high-voltage cable joint lead casting process, comprising an outer rotor slip ring device, a winding mechanism, and a cable clamp walking mechanism; two half-circle inner stator mechanisms are detachably buckled up and down; a plurality of half-circle electric slip rings are fixedly installed on the outer surface of each half-circle inner stator mechanism, and half-circle copper slip sleeves are fixedly installed at positions close to the two ends of the outer surface, respectively; two half-circle outer rotor mechanisms are clamped on the half-circle copper slip sleeves and connected into a whole circular outer rotor through a hinge and a locking mechanism; brushes are installed on the two half-circle outer rotor mechanisms, and the brushes form electrical contact with the half-circle electric slip rings on the two half-circle inner stator mechanisms. The present disclosure uses lead strips, heats the object to be wound and the lead strips at the same time through a high-temperature hot air gun before winding, and uses an elastic coating head to compress the lead strips during the winding process.

Description

Technical Field

[0001] This disclosure pertains to the field of high-voltage cable technology, and particularly relates to an automatic lead-enameling device suitable for the lead-enameling process of high-voltage cable joints. Background Technology

[0002] During the interconnection of high-voltage cables, a lead-lined joint is required between the prefabricated joint and the outer aluminum sheath of the cable. This joint is called a lead-lined joint.

[0003] The traditional method for producing lead-lined connectors involves melting a lead-tin alloy with a flame. Workers, wearing heat-resistant gloves, apply the molten lead to the prefabricated connector and the outer aluminum sheath of the cable. The melting temperature of lead is between 180°C and 280°C, which is relatively high. Workers must maintain constant vigilance to avoid burns and deviations in the lead-lineding quality, which could lead to accidents.

[0004] Patent ZL202411321544.8, "Automatic Lead Enameling Machine and Lead Enameling Process for High-Voltage Cable Accessories and Corrugated Aluminum Sheaths" (Announcement No. CN119314742B), discloses an automatic lead enamelling machine for high-voltage cable accessories and corrugated aluminum sheaths. The machine includes a fixed unit, a rotary positioning unit, an operating system, and a control module. The operating system is mounted on the rotary positioning unit, which is mounted on the fixed unit. The fixed unit clamps the cable. The control module controls the fixed unit, rotary positioning unit, and operating system to enamel the high-voltage cable accessories and corrugated aluminum sheaths, improving the quality and efficiency of lead enamelting and automating the process. However, due to the fixed shape and size of components such as the outer base and turntable, and the continued use of the traditional lead enamelting method involving melting lead, its applicability is narrow and its automation level is low (e.g., the forward and reverse rotation of the servo motor and the determination of the lead's fluidity still require the intervention of experienced personnel).

[0005] Therefore, there is an urgent need to develop an automatic lead plating device with a wide range of applications and a high degree of automation to replace manual labor in completing most of the lead plating work. Summary of the Invention

[0006] To address the aforementioned issues, this disclosure provides an automatic lead-enameling device suitable for the lead-enameling process of high-voltage cable joints. It employs strip lead material, which is wrapped around the prefabricated joint and the cable's aluminum sheath using a winding method. Before winding, the object to be wrapped is heated using a high-temperature hot air gun, and the lead strip is heated simultaneously. During the winding process, an elastic coating head is used to press the lead strip tightly, ensuring the density of the lead coating and thus replacing manual lead-enameling operations.

[0007] This disclosure is achieved through the following preferred solution:

[0008] An automatic lead-enameling device suitable for the lead-enameling process of high-voltage cable joints includes an external rotor slip ring device, a winding mechanism, and a cable clamping and traveling mechanism.

[0009] The outer rotor slip ring device includes two semi-circular inner stator mechanisms and two semi-circular outer rotor mechanisms; the two semi-circular inner stator mechanisms can be separably fastened together, and a rotor drive motor frame is fixed on the lower semi-circular inner stator mechanism; several semi-circular electric slip rings are fixedly installed on the outer surface of each semi-circular inner stator mechanism; semi-circular copper slip sleeves are fixedly installed on the outer surfaces of the two semi-circular inner stator mechanisms near both ends.

[0010] Two semi-circular outer rotor mechanisms are mounted on the semi-circular copper sliding sleeves of two semi-circular inner stator mechanisms, and are connected as a whole circular outer rotor by hinges and locking mechanisms; brushes are installed on the two semi-circular outer rotor mechanisms, and the brushes form electrical contact with the semi-circular slip rings on the two semi-circular inner stator mechanisms.

[0011] Two semi-circular outer rotor mechanisms have semi-circular outer rotor drive gears fixedly installed on their outer surfaces near the same end; the outer rotor drive motor is fixedly installed on the rotor drive motor frame, and the output end of the outer rotor drive motor is fixed with a small gear that meshes with the outer rotor drive gear.

[0012] Furthermore,

[0013] Each of the two semicircular inner stator mechanisms has several semicircular copper rings fixed to it by screws; each of the semicircular copper rings on the semicircular inner stator mechanism is connected to an independent wire connector by a wire, and each of the two semicircular inner stator mechanisms is connected to a wire connector.

[0014] Furthermore,

[0015] The outer rotor slip ring device is used to mount the winding mechanism and to supply power to the winding mechanism via brushes; the winding mechanism is mounted on one of the semicircular outer rotor mechanisms.

[0016] Furthermore,

[0017] The winding mechanism includes a mounting plate, a torque retainer, a lead belt pulley, an aluminum-sheathed hot air gun, a lead belt hot air gun, an aluminum-sheathed temperature sensor, a lead belt temperature sensor, and an elastic coating head.

[0018] Furthermore,

[0019] The aluminum-sheathed hot air gun and the lead-belt hot air gun are powered by brushes.

[0020] Furthermore,

[0021] The mounting plate is fixed to one of the semi-circular outer rotor mechanisms;

[0022] Torque retainer, aluminum-sheathed hot air gun, lead-stripe hot air gun, aluminum-sheathed temperature sensor, lead-stripe temperature sensor, and elastic coating head are respectively mounted on the mounting plate;

[0023] The lead belt pulley is mounted on the torque retainer.

[0024] Furthermore,

[0025] The winding mechanism also includes an aluminum sheath hot air gun adjustment mechanism;

[0026] The aluminum-sheathed hot air gun is connected to the adjustment mechanism of the aluminum-sheathed hot air gun via a ceramic hose.

[0027] Furthermore,

[0028] The cable clamping and traveling mechanism includes two sets of V-shaped clamping devices and several connecting rods.

[0029] Furthermore,

[0030] Several connecting rods of equal length are arranged in parallel alignment, and two sets of V-shaped clamping devices are fixed at both ends of the connecting rods respectively.

[0031] Furthermore,

[0032] The cable clamping and traveling mechanism is fixedly connected to the rotor drive motor frame on the semi-circular outer rotor mechanism via an optical shaft.

[0033] Furthermore,

[0034] A lead screw motor is fixedly installed on the V-shaped clamping device near the outer rotor slip ring device. The lead screw motor meshes with the optical shaft, and the two ends of the optical shaft are supported on two sets of V-shaped clamping devices by sliding bearings.

[0035] Furthermore,

[0036] The V-type clamping device includes a bearing housing, a clamping seat, positive and negative lead screws, and a clamping mounting plate.

[0037] Furthermore,

[0038] The bearing housing is fixed to the clamping mounting plate by bolts, and the clamping seat is connected to the bearing housing by a light shaft;

[0039] The forward and reverse leadscrews are connected to the clamping seat via a nut sleeve, and the forward and reverse leadscrews are connected to the bearing seat via a sliding bearing.

[0040] Furthermore,

[0041] There are two clamping seats, one on the left and one on the right, and the lower parts of the two clamping seats face each other to form a V-shaped clamping space.

[0042] Furthermore,

[0043] The lower part of the clamping mounting plate has an opening corresponding to the V-shaped clamping space.

[0044] Compared with the prior art, this disclosure provides an automatic lead-enameling device suitable for the lead-enameling process of high-voltage cable joints, which has the following beneficial effects:

[0045] 1. A method of lead plating for high-voltage cable joints by wrapping with strip-shaped lead strips was proposed, eliminating the need for separate heating and melting of the lead material, instead allowing for real-time heating and melting during the coating process.

[0046] 2. Heating the aluminum sheath and the lead enamel work are carried out simultaneously. It is not necessary to heat the aluminum sheath as a whole first. The temperature is uncontrollable and it is easy to damage the cable insulation layer.

[0047] 3. Applying lead plating while winding increases the real-time nature of lead plating and ensures the tightness of the lead plating joint.

[0048] Other features and advantages of this disclosure will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the disclosure. The objects and other advantages of this disclosure may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1 A three-dimensional structural schematic diagram of an automatic lead-enameling device (in working state) suitable for lead-enameling process of high-voltage cable joints according to an embodiment of the present disclosure is shown.

[0051] Figure 2 A three-dimensional structural schematic diagram of the external rotor slip ring device according to an embodiment of the present disclosure is shown;

[0052] Figure 3 A schematic axial cross-sectional view of the external rotor slip ring device according to an embodiment of the present disclosure is shown;

[0053] Figure 4 A partial cross-sectional view of the external rotor slip ring device according to an embodiment of the present disclosure is shown;

[0054] Figure 5 A front view schematic diagram of an automatic lead-enameling device (in working state) suitable for lead-enameling process of high-voltage cable joints according to an embodiment of the present disclosure is shown.

[0055] Figure 6 It shows Figure 5 Right view of the structure shown;

[0056] Figure 7 A three-dimensional structural schematic diagram of the cable clamping and traveling mechanism according to an embodiment of the present disclosure is shown. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0058] Figure 1 A three-dimensional structural schematic diagram of an automatic lead-enameling device for lead-enameling process of high-voltage cable joints according to an embodiment of the present disclosure is shown.

[0059] An automatic lead-enameling device for high-voltage cable joint lead-enameling process according to an embodiment of the present disclosure includes an outer rotor slip ring device 1, a winding mechanism 2, and a cable clamping and traveling mechanism 3.

[0060] The outer rotor slip ring device 1 is used to mount the winding mechanism 2 and supplies power to the winding mechanism 2 via brushes. See also... Figure 2 and Figure 3 The outer rotor slip ring device 1 includes two semi-circular inner stator mechanisms 1-1 and two semi-circular outer rotor mechanisms 1-5.

[0061] Several semicircular copper rings 1-2 are fixed to the two semicircular inner stator mechanisms 1-1 by screws 1-3. The semicircular copper rings 1-2 on each semicircular inner stator mechanism 1-1 are connected to an independent wire connector 1-4 by wires, and the two semicircular inner stator mechanisms 1-1 are each connected to a wire connector 1-4.

[0062] The two semicircular inner stator mechanisms 1-1 can be separably engaged vertically, and their positioning is preferably achieved through a convex-concave structure, a snap-fit ​​structure, or a hinge. A rotor drive motor frame 1-9 is fixed to the lower semicircular inner stator mechanism. (See appendix) Figure 4 Several semicircular electric slip rings 1-13 are fixedly installed on the outer surface of each semicircular inner stator mechanism. Each semicircular electric slip ring 1-13 is in conductive contact with at least one semicircular copper ring 1-2. When two semicircular inner stator mechanisms 1-1 are engaged, the semicircular electric slip rings 1-13 on the upper and lower semicircular inner stator mechanisms 1-1 form a complete circular electric slip ring.

[0063] Near the two ends of the outer surfaces of the two semicircular inner stator mechanisms 1-1, semicircular copper sleeves 1-6 are fixedly installed. The axial section of the semicircular copper sleeves 1-6 has an L-shape that contacts the semicircular outer rotor mechanism. After the two semicircular inner stator mechanisms 1-1 are engaged, the semicircular copper sleeves 1-6 on the outer surfaces of the two ends form a complete circular sleeve to support the two semicircular outer rotor mechanisms 1-5.

[0064] Two semi-circular outer rotor mechanisms 1-5 are mounted on the semi-circular copper sliding sleeves 1-6 of the two semi-circular inner stator mechanisms 1-1, and are connected as a whole circular outer rotor through hinges 1-7 and locking mechanisms.

[0065] like Figure 4 As shown, brush holders 1-11 are mounted on the two semicircular outer rotor mechanisms 1-5, and brushes 1-12 are mounted on the brush holders 1-11. When the two semicircular outer rotor mechanisms 1-5 are locked, the brushes 1-12 form electrical contact with the semicircular slip rings 1-13 on the two semicircular inner stator mechanisms 1-1. Preferably, the brushes 1-12 are flexible brushes.

[0066] At the same end position on the outer surface of the two semicircular outer rotor mechanisms 1-5, semicircular outer rotor gears 1-8 are fixedly installed respectively. When the two semicircular outer rotor mechanisms 1-5 are locked, the two semicircular outer rotor gears 1-8 are combined to form a complete outer rotor drive gear.

[0067] The external rotor drive motor 1-10 is fixedly mounted on the rotor drive motor frame 1-9. The output end of the external rotor drive motor 1-10 is fixed with a small gear that meshes with the external rotor drive gear.

[0068] See appendix Figure 5 and attached Figure 6 The winding mechanism 2, mounted on one of the semicircular outer rotor mechanisms, includes a mounting plate 2-9, a torque retainer 2-1, a lead belt pulley 2-2, an aluminum-sheathed hot air gun 2-3, a lead belt hot air gun 2-4, an aluminum-sheathed temperature sensor 2-5, a lead belt temperature sensor 2-6, and an elastic coating head 2-7. The aluminum-sheathed hot air gun 2-3 and the lead belt hot air gun 2-4 are powered by brushes 1-12.

[0069] Mounting plate 2-9 is fixed to one of the semi-circular outer rotor mechanisms. Torque retainer 2-1, aluminum-sheathed hot air gun 2-3, lead-belt hot air gun 2-4, aluminum-sheathed temperature sensor 2-5, lead-belt temperature sensor 2-6, and elastic coating head 2-7 are respectively mounted on mounting plate 2-9. Lead-belt pulley 2-2 is mounted on torque retainer 2-1.

[0070] As a preferred method, the winding mechanism 2 also includes an aluminum-sheathed hot air gun adjustment mechanism 2-8, wherein the aluminum-sheathed hot air gun 2-3 is connected to the aluminum-sheathed hot air gun adjustment mechanism 2-8 via a ceramic hose 2-10.

[0071] See appendix Figure 1 and attached Figure 7 The cable clamping and traveling mechanism 3 includes two sets of V-shaped clamping devices 4 and several connecting rods 4-7. The several connecting rods 4-7 are of equal length and are arranged in parallel alignment. The two sets of V-shaped clamping devices 4 are respectively fixed at both ends of the several connecting rods 4-7.

[0072] A lead screw motor 3-2 is fixedly mounted on the V-shaped clamping device 4 near the outer rotor slip ring device 1. The lead screw motor 3-2 meshes with the optical shaft 3-1. Both ends of the optical shaft 3-1 are supported on the two sets of V-shaped clamping devices 4 by sliding bearings 4-8. The cable clamping and traveling mechanism 3 is fixedly connected to the rotor drive motor frame 1-9 on the semi-circular outer rotor mechanism through the optical shaft 3-1.

[0073] The V-type clamping device 4 includes a bearing housing 4-1, a clamping seat 4-2, a forward and reverse lead screw 4-3, and a clamping mounting plate 4-4. The bearing housing 4-1 is fixed to the clamping mounting plate 4-4 with bolts. The clamping seat 4-2 is connected to the bearing housing 4-1 via a shaft 4-5. The forward and reverse lead screw 4-3 is connected to the clamping seat 4-2 via a nut sleeve 4-6, and is also connected to the bearing housing 4-1 via a sliding bearing. There are two clamping seats 4-2, left and right, whose lower parts face each other to form a V-shaped clamping space. The lower part of the clamping mounting plate 4-4 has a large opening corresponding to the V-shaped clamping space, large enough to accommodate the largest diameter of existing high-voltage cables.

[0074] The processing procedure of this embodiment is described as follows:

[0075] When cable processing is required, the cable clamping and traveling mechanism 3 is fixed to the cable via the clamping seat 4-2. The outer rotor slip ring device 1 is opened via the hinge 1-7 (first open the two semi-circular outer rotor mechanisms 1-5, then open the two semi-circular inner stator mechanisms 1-1), and then fastened at the cable joint position. The outer rotor slip ring device 1 is connected to the clamping and traveling mechanism via the optical shaft 3-1, and the lead screw motor 3-2 is installed (ensuring that the optical shaft 3-1 has a suitable stroke). The winding mechanism 2 is installed on the outer rotor slip ring device 1.

[0076] After completing the above installation, adjust the lead belt pulley 2-2, and use the elastic coating head 2-7 to initially fix the lead belt to the aluminum sheath. The aluminum sheath hot air gun 2-3 heats the aluminum sheath, the aluminum sheath temperature sensor 2-5 monitors the surface temperature of the aluminum sheath, and the lead belt hot air gun 2-4 heats the lead belt. When the temperature is suitable, start the outer rotor drive motor 1-10, which drives the outer rotor slip ring device 1 through the outer rotor drive gear, thereby driving the mounting plate 2-9 to rotate.

[0077] Mounting plate 2-9 rotates around the cable, and the lead strip installed on lead strip pulley 2-2 is dragged and wound onto the aluminum sheath. Screw motor 3-2 drives the outer rotor slip ring device 1 to move back and forth, completely winding the lead strip onto the aluminum sheath and intermediate joint. Elastic coating head 2-7 squeezes and flattens the lead strip to complete the lead plating work.

[0078] Although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. An automatic lead-enameling device suitable for the lead-enameling process of high-voltage cable joints, characterized in that, Includes an external rotor slip ring device, a winding mechanism, and a cable clamping and traveling mechanism; The outer rotor slip ring device includes two semi-circular inner stator mechanisms and two semi-circular outer rotor mechanisms; the two semi-circular inner stator mechanisms can be separably fastened together, and a rotor drive motor frame is fixed on the lower semi-circular inner stator mechanism; several semi-circular electric slip rings are fixedly installed on the outer surface of each semi-circular inner stator mechanism; semi-circular copper slip sleeves are fixedly installed on the outer surfaces of the two semi-circular inner stator mechanisms near both ends. Two semi-circular outer rotor mechanisms are mounted on the semi-circular copper sliding sleeves of two semi-circular inner stator mechanisms, and are connected as a whole circular outer rotor by hinges and locking mechanisms; brushes are installed on the two semi-circular outer rotor mechanisms, and the brushes form electrical contact with the semi-circular slip rings on the two semi-circular inner stator mechanisms. Two semi-circular outer rotor mechanisms have semi-circular outer rotor drive gears fixedly installed on their outer surfaces near the same end; the outer rotor drive motor is fixedly installed on the rotor drive motor frame, and the output end of the outer rotor drive motor is fixed with a small gear that meshes with the outer rotor drive gear. The winding mechanism includes a mounting plate, a torque retainer, a lead belt pulley, an aluminum sheathed hot air gun, a lead belt hot air gun, an aluminum sheathed temperature sensor, a lead belt temperature sensor, and an elastic coating head. The winding mechanism is fixed to one of the semi-circular outer rotor mechanisms by a mounting plate, and the outer rotor slip ring device supplies power to the winding mechanism through brushes.

2. An automatic lead-enameling device for high-voltage cable joint lead-enameling process according to claim 1, characterized in that, Each of the two semicircular inner stator mechanisms has several semicircular copper rings fixed to it by screws; each of the semicircular copper rings on the semicircular inner stator mechanism is connected to an independent wire connector by a wire, and each of the two semicircular inner stator mechanisms is connected to a wire connector.

3. An automatic lead-enameling device for high-voltage cable joint lead-enameling process according to claim 1, characterized in that, The aluminum-sheathed hot air gun and the lead-belt hot air gun are powered by brushes.

4. An automatic lead-enameling device suitable for lead-enameling processes of high-voltage cable joints according to claim 1 or 3, characterized in that, Torque retainer, aluminum-sheathed hot air gun, lead-stripe hot air gun, aluminum-sheathed temperature sensor, lead-stripe temperature sensor, and elastic coating head are respectively mounted on the mounting plate; The lead belt pulley is mounted on the torque retainer.

5. An automatic lead-enameling device for high-voltage cable joint lead-enameling process according to claim 4, characterized in that, The winding mechanism also includes an aluminum sheath hot air gun adjustment mechanism; The aluminum-sheathed hot air gun is connected to the adjustment mechanism of the aluminum-sheathed hot air gun via a ceramic hose.

6. An automatic lead-enameling device for high-voltage cable joint lead-enameling process according to claim 1, characterized in that, The cable clamping and traveling mechanism includes two sets of V-shaped clamping devices and several connecting rods.

7. An automatic lead-enameling device for high-voltage cable joint lead-enameling process according to claim 6, characterized in that, Several connecting rods of equal length are arranged in parallel alignment, and two sets of V-shaped clamping devices are fixed at both ends of the connecting rods respectively.

8. An automatic lead-enameling device for high-voltage cable joint lead-enameling process according to claim 6 or 7, characterized in that, The cable clamping and traveling mechanism is fixedly connected to the rotor drive motor frame on the semi-circular outer rotor mechanism via an optical shaft.

9. An automatic lead-enameling device for high-voltage cable joint lead-enameling process according to claim 8, characterized in that, A lead screw motor is fixedly installed on the V-shaped clamping device near the outer rotor slip ring device. The lead screw motor meshes with the optical shaft, and the two ends of the optical shaft are supported on two sets of V-shaped clamping devices by sliding bearings.

10. An automatic lead-enameling device for high-voltage cable joint lead-enameling process according to claim 9, characterized in that, The V-type clamping device includes a bearing housing, a clamping seat, positive and negative lead screws, and a clamping mounting plate.

11. An automatic lead-enameling device for high-voltage cable joint lead-enameling process according to claim 10, characterized in that, The bearing housing is fixed to the clamping mounting plate by bolts, and the clamping seat is connected to the bearing housing by a light shaft; The forward and reverse leadscrews are connected to the clamping seat via a nut sleeve, and the forward and reverse leadscrews are connected to the bearing seat via a sliding bearing.

12. An automatic lead-enameling device for high-voltage cable joint lead-enameling process according to claim 11, characterized in that, There are two clamping seats, one on the left and one on the right, and the lower parts of the two clamping seats face each other to form a V-shaped clamping space.

13. An automatic lead-enameling device for high-voltage cable joint lead-enameling process according to claim 12, characterized in that, The lower part of the clamping mounting plate has an opening corresponding to the V-shaped clamping space.

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