Sliding conductive device

Abstract

The utility model relates to a kind of sliding conductive devices, including insulating shell, copper base, compression air bag, several elastic members and several conductive sheets, insulating shell is hollow, copper base is located in the inside of insulating shell and has annular structure for electrode pull rod to pass through, conductive sheet is uniformly distributed on copper base around shaft and its inner end contacts the outer wall of electrode pull rod, compression air bag surrounds copper base, one elastic member is clamped between the outer end of each conductive sheet and the inner wall of compression air bag, and elastic member is embedded in copper base.The utility model in the compression air bag has elasticity, its position is in the gap between insulating shell and copper base, can buffer some impact;Compression air bag is also used as the outer side limiting component of elastic member simultaneously, so that elastic member generates radial inward spring force to conductive sheet, so that each conductive sheet and the outer wall of electrode pull rod keep close contact, and still can keep good power supply function in the telescopic activity of electrode pull rod.

Description

Technical Field

[0001] This utility model relates to the field of conductive connection technology, and in particular to a sliding conductive device. Background Technology

[0002] During operation of an electroslag furnace, the vertically moving electrode rods require relative motion with respect to the fixed power supply. The electrode rods move axially, theoretically only along a straight line; however, installation errors always exist, and the electrode rods may become slightly eccentric. If there is rigid contact between the power supply and the electrode rods, it will easily lead to wear on the electrode rods and unreliable conductivity, potentially causing power outages.

[0003] To avoid the above problems, it is necessary to provide a new sliding conductive device. Utility Model Content

[0004] The main purpose of this invention is to provide a sliding conductive device that can maintain good power supply function even during the extension and retraction of the electrode rod.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a sliding conductive device, comprising an insulating shell, a copper base, a pressing airbag, several elastic elements, and several conductive sheets. The insulating shell is hollow, the copper base is located inside the insulating shell and has an annular structure through which an electrode pull rod passes. The conductive sheets are evenly distributed around the copper base and their inner ends contact the outer wall of the electrode pull rod. The pressing airbag surrounds the copper base, and an elastic element is clamped between the outer end of each conductive sheet and the inner wall of the pressing airbag. The elastic element is embedded in the copper base.

[0006] Specifically, the inner wall of the conductive sheet is an arc-shaped surface that fits the outer wall of the electrode pull rod.

[0007] Specifically, the lower outer wall of the insulating shell has multiple protrusions evenly distributed around an axis, and a fixing bolt is vertically inserted through each protrusion.

[0008] Specifically, the top of the insulating shell is provided with an annular heat-conducting cover, the upper surface of the heat-conducting cover is provided with a cooling groove, the cross-section of the cooling groove is semi-circular, and a cooling coil is attached to the cooling groove.

[0009] Furthermore, the cooling coil has two coils that are 180° rotationally symmetrical, and each cooling coil has an arc-shaped cooling section that fits onto the cooling groove, the arc of which is less than 180°.

[0010] Furthermore, the heat-conducting top cover is provided with a buffer gasket, the outer wall of the buffer gasket is in close contact with the inner wall of the heat-conducting top cover, and the inner wall of the buffer gasket is in close contact with the outer wall of the electrode pull rod.

[0011] The beneficial effects of this utility model's technical solution are: In this invention, the compression airbag is elastic and positioned in the gap between the insulating shell and the copper base, which can buffer some impacts. At the same time, the compression airbag also serves as an outer limiting component of the elastic element, so that the elastic element generates a radially inward elastic force on the conductive sheet, thereby ensuring that each conductive sheet is in close contact with the outer wall of the electrode rod, and maintaining good power supply function during the extension and retraction of the electrode rod. Attached Figure Description

[0012] Figure 1 This is a perspective view of the sliding conductive device in the embodiment; Figure 2 This is a cross-sectional view of the sliding conductive device in the embodiment; Figure 3 This is a longitudinal sectional view of the sliding conductive device in the embodiment.

[0013] The numbers in the image represent: 1-Insulating shell; 11-Protrusion; 2-Copper base; 3-Compression airbag; 4-Elastic element; 5-Conductive sheet; 6-Fixing bolt; 7-Heat-conducting top cover; 8-Cooling coil; 9-Buffer washer. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to specific embodiments.

[0015] Example: like Figures 1 to 3 As shown, the present invention discloses a sliding conductive device, comprising an insulating shell 1, a copper base 2, a pressing airbag 3, several elastic elements 4, and several conductive sheets 5. The insulating shell 1 is hollow, and the copper base 2 is located inside the insulating shell 1 and has an annular structure through which an electrode pull rod (not shown) passes. The conductive sheets 5 are evenly distributed around the axis on the copper base 2 and their inner ends contact the outer wall of the electrode pull rod. The pressing airbag 3 surrounds the copper base 2, and an elastic element 4 is clamped between the outer end of each conductive sheet 5 and the inner wall of the pressing airbag 3. The elastic element 4 is embedded in the copper base 2.

[0016] The insulating housing 1 protects the remaining components of the sliding conductive device. The copper base 2 conducts electricity and restricts the radial movement of the conductive sheet 5. The conductive sheet 5 conducts electricity between the copper base 2 and the electrode pull rod. The compression airbag 3 is elastic and positioned in the gap between the insulating housing 1 and the copper base 2 to buffer some impacts; at the same time, the compression airbag 3 also serves as an outer limiting component of the elastic element 4, causing the elastic element 4 to generate a radially inward elastic force on the conductive sheet 5. After the compression airbag 3 is inflated, it compresses the conductive sheet 5 to move towards the center of the copper base 2, thereby ensuring that each conductive sheet 5 maintains close contact with the outer wall of the electrode pull rod, and maintaining good power supply function during the extension and retraction of the electrode pull rod.

[0017] like Figure 2 As shown, the inner wall of the conductive sheet 5 is an arc-shaped surface that fits the outer wall of the electrode pull rod.

[0018] To achieve low resistance during operation, a large contact area is required between the conductive sheet 5 and the electrode rod. By making the inner wall of the conductive sheet 5 into an arc-shaped surface, regardless of the eccentricity of the electrode rod, at least two conductive sheets 5 (in radially opposite positions) can ensure surface contact with the electrode rod. This ensures a sufficient conductive area and reduces the resistance value.

[0019] like Figures 1 to 3 As shown, multiple protrusions 11 are evenly distributed around the lower outer wall of the insulating housing 1, and a fixing bolt 6 is vertically inserted through each protrusion 11.

[0020] All the protrusions 11 form a flange-like structure, which allows the insulating housing 1 to be fixed to the fixed surface of the electroslag furnace using the fixing bolts 6, so that the sliding conductive device will not move easily.

[0021] like Figure 1 and Figure 3 As shown, the top of the insulating housing 1 is provided with an annular heat-conducting cover 7. The upper surface of the heat-conducting cover 7 is provided with a cooling groove. The cross-section of the cooling groove is semi-circular, and a cooling coil 8 is attached to the cooling groove. There are two cooling coils 8 that are 180° rotationally symmetrical. Each cooling coil 8 has an arc-shaped cooling section attached to the cooling groove. The arc of the arc-shaped cooling section is less than 180°.

[0022] Because the sliding conductive device inherently possesses resistance, it generates heat when current flows through it, potentially causing the insulating housing 1 to overheat and become damaged. Therefore, during operation, cooling coils 8 are needed to absorb the heat and protect the sliding conductive device from damage. The two cooling coils 8 can absorb heat independently, and compared to a single cooling coil, the cooling water and the heat-absorbing surface maintain a larger temperature difference, resulting in higher heat absorption efficiency.

[0023] like Figure 3As shown, a buffer gasket 9 is provided inside the heat-conducting top cover 7. The outer wall of the buffer gasket 9 is in close contact with the inner wall of the heat-conducting top cover 7, and the inner wall of the buffer gasket 9 is in close contact with the outer wall of the electrode pull rod.

[0024] The buffer washer 9 can undergo slight elastic deformation. When the electrode rod extends or retracts axially, the inner wall of the buffer washer 9 remains in close contact with it, thus limiting the eccentricity of the motor rod at a position relatively close to the conductive plate 5. At this time, the electrode rod will only move a small distance relative to the conductive plate 5, preventing excessive compression of the elastic element 4 and protecting the components.

[0025] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A sliding conductive device, characterized in that: The device includes an insulating shell, a copper base, a compression airbag, several elastic elements, and several conductive sheets. The insulating shell is hollow, and the copper base is located inside the insulating shell and has an annular structure through which an electrode pull rod passes. The conductive sheets are evenly distributed around the copper base with their inner ends contacting the outer wall of the electrode pull rod. The compression airbag surrounds the copper base, and an elastic element is clamped between the outer end of each conductive sheet and the inner wall of the compression airbag. The elastic element is embedded in the copper base.

2. The sliding conductive device according to claim 1, characterized in that: The inner wall of the conductive sheet is an arc-shaped surface that fits the outer wall of the electrode pull rod.

3. The sliding conductive device according to claim 1, characterized in that: The lower outer wall of the insulating shell has multiple protrusions evenly distributed around an axis, and a fixing bolt is vertically inserted through each protrusion.

4. The sliding conductive device according to claim 1, characterized in that: The top of the insulating shell is provided with an annular heat-conducting cover, and the upper surface of the heat-conducting cover is provided with a cooling groove. The cross-section of the cooling groove is semi-circular, and a cooling coil is attached to the cooling groove.

5. The sliding conductive device according to claim 4, characterized in that: The cooling coil has two coils that are 180° rotationally symmetrical. Each cooling coil has an arc-shaped cooling section that fits onto the cooling groove. The arc of the arc-shaped cooling section is less than 180°.

6. The sliding conductive device according to claim 4, characterized in that: The heat-conducting top cover is provided with a buffer gasket. The outer wall of the buffer gasket is in close contact with the inner wall of the heat-conducting top cover, and the inner wall of the buffer gasket is in close contact with the outer wall of the electrode pull rod.

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