Contact for automatic stringing device to adapt to line sway

Abstract

The application relates to the technical field of thermal ice melting, and particularly discloses a contact self-adapting to line shaking of an automatic stringing device, which is connected between a telescopic assembly and a wire, and comprises a static contact assembly, a dynamic contact assembly and a buffer assembly. The static contact assembly is connected with a suspension clamp of a fixed wire and is electrically connected with the wire; the static contact assembly is electrically connected with a ground wire; one end of the buffer assembly is connected with the dynamic contact assembly, and the other end is connected with an output end of the telescopic assembly; when the output end of the telescopic assembly extends to a first position, the dynamic contact assembly is in contact with the static contact assembly; when the output end of the telescopic assembly is retracted to a second position, the dynamic contact assembly is separated from the static contact assembly. The above arrangement makes the dynamic contact assembly and the static contact assembly connected, and when the wire shakes, the buffer assembly offsets the shaking amount, so that the dynamic contact assembly and the static contact assembly are prevented from being separated or the dynamic contact assembly or the static contact assembly is prevented from being damaged.

Description

Technical Field

[0001] This invention relates to the field of thermal ice melting technology, and more particularly to an automatic series connection device with an adaptive contact for circuit swaying. Background Technology

[0002] Under the same environmental conditions, temperature, humidity, and wind speed, the overhead line conductors carry load current, which can generate heat to resist some of the icing. The icing thickness of the overhead line ground wire is often greater than that of the conductor. When the icing thickness of the ground wire reaches a certain level, it will lead to insufficient safety distance, thereby causing discharge.

[0003] Common methods for de-icing include thermal de-icing, mechanical de-icing, and natural de-icing. The main method used in the current power grid is thermal de-icing, which commonly involves short-circuiting the conductor and the ground wire to generate a short-circuit current, converting electrical energy into heat energy, and achieving thermal equilibrium for de-icing.

[0004] However, the overhead wires are affected by the wind and sway irregularly at any time with great force, which may cause the wires to detach from the switch, or even damage the switch due to excessive displacement transmitted by the rigid connection. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic series connection device with an adaptive contact for line swaying, so as to solve the problem in the prior art where conductor swaying causes separation from the switch or damage to the switch.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This invention provides an adaptive contact for automatic series connection devices that adapts to line sway, connected between a telescopic component and a conductor. The adaptive contact for automatic series connection devices includes:

[0008] A stationary contact assembly, which is connected to a suspension clamp for fixing a conductor and is electrically connected to the conductor;

[0009] The moving contact assembly is electrically connected to the ground wire;

[0010] A buffer assembly, one end of which is connected to the moving contact assembly, and the other end of which is connected to the output end of the telescopic assembly; when the output end of the telescopic assembly extends to a first position, the moving contact assembly contacts the stationary contact assembly; when the output end of the telescopic assembly retracts to a second position, the moving contact assembly separates from the stationary contact assembly.

[0011] Preferably, the buffer assembly includes a buffer pressure cylinder and a spring, one end of the buffer pressure cylinder is connected to the output end of the telescopic assembly, one end of the spring is connected to the other end of the buffer pressure cylinder, and the other end of the spring is connected to the moving contact assembly.

[0012] Preferably, the moving contact assembly includes a movable seat and a first mating member, the first mating member being disposed on the movable seat, the first mating member and the movable seat being connected by a clamp, and the first mating member being electrically connected to the ground wire.

[0013] Preferably, the stationary contact assembly includes a fixed base and a second docking member, the second docking member being disposed on the fixed base, and one of the first docking member and the second docking member having a slot and the other having a pin, the first docking member and the second docking member being able to be plugged into each other.

[0014] Preferably, the first docking member is provided with a slot with the opening facing downwards. When the output end of the telescopic component extends downwards to the first position, the second docking member is inserted into the first docking member.

[0015] Preferably, the spring is further comprising an insulating rod, one end of which is connected to one end of the insulating rod, and the other end of which is connected to the moving contact assembly.

[0016] Preferably, the buffer assembly further includes a first flange and a second flange, the first flange being connected to the output end of the telescopic assembly, and the second flange being connected to the buffer pressure cylinder, the first flange and the second flange being screwed together; and / or

[0017] The buffer assembly further includes a third flange and a fourth flange, the third flange being connected to one end of the spring and the fourth flange being connected to the insulating rod, and the third flange and the fourth flange being screwed together.

[0018] Preferably, the buffer assembly includes a buffer pressure cylinder and a horizontal moving assembly. One end of the buffer pressure cylinder is connected to the output end of the telescopic assembly, the horizontal moving assembly is located at the output end of the buffer pressure cylinder, and the moving contact assembly is located at the output end of the horizontal moving assembly.

[0019] Preferably, the stationary contact assembly further includes an adapter, one end of which is rotatably connected to the movable seat, and the other end is electrically connected to the ground wire.

[0020] Preferably, one of the adapter and the movable seat has a ball head and the other has a ball socket, with the ball socket fitted over the ball head.

[0021] The beneficial effects of this invention are as follows:

[0022] This invention provides an adaptive contact for an automatic connection device that adapts to line swaying. The contact is connected between a telescopic assembly and a conductor. The adaptive contact includes a stationary contact assembly, a moving contact assembly, and a buffer assembly. The stationary contact assembly is connected to a suspension clamp that fixes the conductor and is electrically connected to the conductor; the stationary contact assembly is also electrically connected to a ground wire. One end of the buffer assembly is connected to the moving contact assembly, and the other end is connected to the output end of the telescopic assembly. When the output end of the telescopic assembly extends to a first position, the moving contact assembly contacts the stationary contact assembly; when the output end of the telescopic assembly retracts to a second position, the moving contact assembly separates from the stationary contact assembly. With this structure, after the moving and stationary contact assemblies are connected, when the conductor sways, the buffer assembly cancels out the sway, preventing separation between the moving and stationary contact assemblies or damage to either assembly due to excessive displacement of the moving contact assembly relative to the stationary contact assembly. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the contact and crossarm of the automatic series connection device for adapting to line swaying in Embodiment 1 of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the contact of the automatic serial connection device that adapts to line swaying in Embodiment 1 of the present invention;

[0025] Figure 3 A schematic diagram of the buffer component in Embodiment 2 of the present invention.

[0026] In the picture:

[0027] X, first horizontal direction; Y, second horizontal direction; Z, vertical direction;

[0028] 100. Crossarm; 200. Expansion joint; 300. Conductor; 400. Suspension clamp; 500. Ground wire;

[0029] 1. Stationary contact assembly; 11. Mounting base; 12. Second mating part;

[0030] 2. Moving contact assembly; 21. Movable seat; 22. First mating part;

[0031] 3. Buffer assembly; 31. Buffer pressure cylinder; 32. Spring; 33. Lateral movement bracket; 34. First lateral movement component; 35. Second lateral movement component; 36. First lateral movement spring; 37. Second lateral movement spring;

[0032] 4. Insulating rod;

[0033] 5. Adapters. Detailed Implementation

[0034] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] Example 1

[0039] like Figure 1-3As shown, this embodiment provides an adaptive contact for line swaying in an automatic connection device, applied in the automatic connection device, connected between the telescopic component 200 and the conductor 300. The telescopic component 200 can be an electric push rod, mounted on a tower. The ground wire 500 is also arranged on the crossarm 100 of the tower, and the conductor 300 is suspended below the crossarm 100. The adaptive contact for line swaying in this automatic connection device includes a stationary contact assembly 1, a moving contact assembly 2, and a buffer assembly 3. The stationary contact assembly 1 is connected to the suspension clamp 400 that fixes the conductor 300 and is electrically connected to the conductor 300; the stationary contact assembly 1 is electrically connected to the ground wire 500; one end of the buffer assembly 3 is connected to the moving contact assembly 2, and the other end is connected to the output end of the telescopic component 200; when the output end of the telescopic component 200 extends to a first position, the moving contact assembly 2 contacts the stationary contact assembly 1; when the output end of the telescopic component 200 retracts to a second position, the moving contact assembly 2 separates from the stationary contact assembly 1. With the above-mentioned structure, after the moving contact assembly 2 and the stationary contact assembly 1 are connected, when the wire 300 shakes, the buffer assembly 3 will cancel out the shaking amount, so as to prevent the moving contact assembly 2 and the stationary contact assembly 1 from separating or from being damaged due to the large displacement of the moving contact assembly 2 relative to the stationary contact assembly 1.

[0040] Regarding the buffer assembly 3, in this embodiment, preferably, the buffer assembly 3 includes a buffer pressure cylinder 31 and a spring 32. One end of the buffer pressure cylinder 31 is connected to the output end of the telescopic assembly 200, one end of the spring 32 is connected to the other end of the buffer pressure cylinder 31, and the other end of the spring 32 is connected to the moving contact assembly 2. Optionally, the spring 32 is a tension spring. By setting the buffer pressure cylinder 31, vertical Z-direction buffering can be achieved. When the wire 300 sways vertically in the Z-direction, the displacement is transmitted to the buffer pressure cylinder 31 through the suspension clamp 400, the stationary contact assembly 1, and the moving contact assembly 2, thereby causing the buffer pressure cylinder 31 to extend and retract. This prevents the displacement of the wire 300 from causing the stationary contact assembly 1 to have a large position relative to the fixed moving contact assembly 2, leading to separation or even damage to the moving and stationary contact assemblies 1. When the conductor 300 sways horizontally, the displacement is transmitted to the tension spring through the suspension clamp 400, the stationary contact assembly 1, and the moving contact assembly 2. This causes the tension spring to stretch, preventing the displacement of the conductor 300 from causing the stationary contact assembly 1 to shift significantly relative to the fixed moving contact assembly 2, potentially leading to separation or even damage to the stationary and moving contact assemblies 1. The tension spring is designed to be in a retracted state under normal conditions, thus not affecting the raising and lowering of the moving contact assembly 2 under the drive of the telescopic assembly 200 or its docking with the stationary contact assembly 1.

[0041] Optionally, to improve safety, in this embodiment, the contact of the automatic series connection device that adapts to line sway also includes an insulating rod 4, one end of the spring 32 is connected to one end of the insulating rod 4, and the other end of the insulating rod 4 is connected to the moving contact assembly 2.

[0042] In this embodiment, optionally, the moving contact assembly 2 includes a movable seat 21 and a first mating member 22. The first mating member 22 is disposed on the movable seat 21. The contact of the automatic series connection device that adapts to line sway also includes a clamp. The first mating member 22 and the movable seat 21 are connected by the clamp, and the first mating member 22 is electrically connected to the ground wire 500. In this embodiment, the movable seat 21 can be made of insulating material. Optionally, in this embodiment, the structure of the insulating rod 4 can be omitted. The clamp connection method allows the movable seat 21 and the first mating member 22 to be designed and manufactured separately, and the connection is firm. In addition, when the first mating member 22 is damaged, it can be disassembled from the movable seat 21 and replaced separately, reducing costs.

[0043] Preferably, the stationary contact assembly 1 includes a fixed base 11 and a second mating member 12, the second mating member 12 being disposed on the fixed base 11. Of the first mating member 22 and the second mating member 12, one has a slot and the other has a pin, allowing the first mating member 22 and the second mating member 12 to be inserted into each other. In other embodiments, the first mating member 22 and the second mating member 12 can be inserted by magnetic attraction or by a knife switch.

[0044] Furthermore, the first mating member 22 is provided with a slot, the opening of which faces downwards. When the output end of the telescopic component 200 extends downwards to the first position, the second mating member 12 is inserted into the first mating member 22. This structure enables insertion of both parts while preventing the collection of rainwater or dust due to the downward-facing slot opening, thus avoiding blockages that could affect insertion and preventing corrosion. Further, the inner diameter of the slot initially remains constant from top to bottom and then gradually increases, while the outer diameter of the pin is equal to the minimum inner diameter of the slot. Further, the sidewall of the slot has a groove extending vertically in the Z direction, allowing the slot to expand. The outer diameter of the pin is slightly larger than the unexpanded size of the slot. Preferably, the difference between the outer diameter of the pin and the unexpanded inner diameter of the slot is 1-2 mm. Optionally, the outer diameter of the pin is 10-20 mm; the unexpanded inner diameter of the slot is 11-22 mm. This design ensures that the expansion of the slot is within the elastic deformation range, thus allowing for an interference fit with the pin.

[0045] The first docking member 22 and the second docking member 12 are both made of conductive material, preferably copper.

[0046] To improve the connection between the buffer assembly 3 and the insulating rod 4, the buffer assembly 3 further includes a first flange and a second flange. The first flange is connected to the output end of the telescopic assembly 200, and the second flange is connected to the buffer hydraulic cylinder 31. The first flange and the second flange are screwed together. The buffer assembly 3 also includes a third flange and a fourth flange. The third flange is connected to one end of the spring 32, and the fourth flange is connected to the insulating rod 4. The third flange and the fourth flange are screwed together. The flange connection method is more secure. In this embodiment, the movable seat 21 and the insulating rod 4 can be integrally formed or screwed together.

[0047] Generally, the ground wire 500 and the first mating part 22 are welded together. When the ground wire 500 and the conductor 300 are connected, the distance between the ground wire 500 and the conductor 300 is relatively long. It will also be affected by the wind and thus swing. The swinging ground wire 500 will affect the firmness of the welding point, thus affecting the conductivity and even causing the solder pad to fall off. The stationary contact assembly 1 also includes an adapter 5. One end of the adapter 5 is rotatably connected to the movable seat 21, and the other end is electrically connected to the ground wire 500.

[0048] Specifically, of the adapter 5 and the movable seat 21, one has a ball head and the other has a ball socket, with the ball socket fitting over the ball head. In another embodiment, the adapter 5 is rotatably connected to the first mating member 22.

[0049] Example 2

[0050] This embodiment also provides an automatic serial connection device for adaptive line swaying contacts. The main structure is basically the same as that of Embodiment 1, except that the buffer component 3 is different. In this embodiment, the buffer component 3 includes a buffer pressure cylinder 31 and a horizontal moving component. One end of the buffer pressure cylinder 31 is connected to the output end of the telescopic component 200. The horizontal moving component is located at the output end of the buffer pressure cylinder 31, and the moving contact component 2 is located at the output end of the horizontal moving component.

[0051] Furthermore, the buffer assembly 3 also includes a transverse support 33, a first transverse member 34, and a second transverse member 35. The spring 32 includes a first transverse spring 36 and a second transverse spring 37. The transverse support 33 is fixed to the output end of the buffer pressure cylinder 31. The first transverse member 34 is slidably disposed on the transverse support 33 along the first horizontal direction X. The two first transverse springs 36 are respectively disposed between the two ends of the first transverse member 34 and the transverse support 33, so that the first transverse member 34 stops on the transverse support 33 at the middle position of the first horizontal direction X. The second transverse member 35 is slidably disposed on the first transverse member 34 along the second horizontal direction Y. The two second transverse springs 37 are respectively disposed between the two ends of the second transverse member 35 and the first transverse member 34, so that the second transverse member 35 stops on the transverse support 33 at the middle position of the second horizontal direction Y. The moving contact assembly 2 is disposed on the second transverse member 35. One of the first transverse springs 36 is disposed between one end of the first transverse member 34 and the transverse support 33, and the other first transverse spring 36 is disposed between the other end of the first transverse member 34 and the transverse support 33. The sliding relationship between the first transverse member 34 and the transverse support 33 can be achieved by means of a slider-rail structure. For example, the first transverse member 34 is provided with a slider, the transverse support 33 is provided with a rail, the slider can slide on the rail, and the second transverse member 35 passes through the sliding hole of the first transverse member 34.

[0052] Optionally, the moving contact assembly 2 and the second lateral movement member 35 can be connected via a flange structure. Further, an insulating rod 4 can be provided between the moving contact assembly 2 and the second lateral movement member 35. Further, the first lateral movement member 34 is provided with a strip-shaped clearance hole extending along the second horizontal direction Y through the sliding hole, and the insulating rod 4 can move along the second horizontal direction Y within the strip-shaped clearance hole.

[0053] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An automatic series connection device with an adaptive contact for line sway, connected between a telescopic assembly (200) and a conductor (300), characterized in that, include: A stationary contact assembly (1) is connected to a suspension clamp (400) of a fixed conductor (300) and is electrically connected to the conductor (300). Moving contact assembly (2), wherein the stationary contact assembly (1) is electrically connected to the ground wire (500); A buffer assembly (3) is provided, with one end connected to the moving contact assembly (2) and the other end connected to the output end of the telescopic assembly (200). When the output end of the telescopic assembly (200) extends to the first position, the moving contact assembly (2) contacts the stationary contact assembly (1). When the output end of the telescopic assembly (200) retracts to the second position, the moving contact assembly (2) separates from the stationary contact assembly (1). The buffer assembly (3) includes a buffer pressure cylinder (31) and a spring (32). One end of the buffer pressure cylinder (31) is connected to the output end of the telescopic assembly (200), one end of the spring (32) is connected to the other end of the buffer pressure cylinder (31), and the other end of the spring (32) is connected to the moving contact assembly (2).

2. The contact of the automatic series connection device according to claim 1, which adapts to line sway, is characterized in that, The moving contact assembly (2) includes a movable seat (21) and a first docking member (22). The first docking member (22) is disposed on the movable seat (21). The first docking member (22) and the movable seat (21) are connected by a clamp. The first docking member (22) is electrically connected to the ground wire (500).

3. The contact of the automatic series connection device according to claim 2, which adapts to line sway, is characterized in that, The stationary contact assembly (1) includes a fixed base (11) and a second docking member (12). The second docking member (12) is disposed on the fixed base (11). One of the first docking member (22) and the second docking member (12) is provided with a slot, and the other is provided with a pin. The first docking member (22) and the second docking member (12) can be plugged into each other.

4. The contact of the automatic series connection device according to claim 3, which adapts to line sway, is characterized in that, The first docking member (22) is provided with a slot with the opening of the slot facing downward. When the output end of the telescopic component (200) extends downward to the first position, the second docking member (12) is inserted into the first docking member (22).

5. The contact of the automatic series connection device according to claim 1, which adapts to line sway, is characterized in that, It also includes an insulating rod (4), one end of the spring (32) is connected to one end of the insulating rod (4), and the other end of the insulating rod (4) is connected to the moving contact assembly (2).

6. The contact of the automatic series connection device according to claim 5, which adapts to line sway, is characterized in that, The buffer assembly (3) further includes a first flange and a second flange, the first flange being connected to the output end of the telescopic assembly (200), and the second flange being connected to the buffer pressure cylinder (31), the first flange and the second flange being screwed together; and / or The buffer assembly (3) further includes a third flange and a fourth flange. The third flange is connected to one end of the spring (32), and the fourth flange is connected to the insulating rod (4). The third flange and the fourth flange are screwed together.

7. The contact of the automatic series connection device for adaptive line swaying according to claim 1, characterized in that, The buffer assembly (3) includes a buffer pressure cylinder (31) and a horizontal moving assembly. One end of the buffer pressure cylinder (31) is connected to the output end of the telescopic assembly (200). The horizontal moving assembly is located at the output end of the buffer pressure cylinder (31), and the moving contact assembly (2) is located at the output end of the horizontal moving assembly.

8. The contact of the automatic series connection device according to any one of claims 2-4, characterized in that, The stationary contact assembly (1) also includes an adapter (5), one end of which is rotatably connected to the movable seat (21), and the other end is electrically connected to the ground wire (500).

9. The contact of the automatic series connection device according to claim 8, which adapts to line sway, is characterized in that, Of the adapter (5) and the movable seat (21), one has a ball head and the other has a ball socket, with the ball socket fitted over the ball head.

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