High-current-carrying stacked selective conductive structure

Abstract

The invention relates to the electromechanical field, in particular to a high-current-carrying superposed selective conductive structure which is used between a wiring contact and a conductive stud in a selective execution mechanism of a vacuum on-load tap-changer attached to a dry-type transformer and is used for conducting electricity. The invention relates to a double-moving-contact-piece clamping structure, which solves the technical problems that the current-carrying capacity is reduced or local overheating is caused by the fact that the current-carrying capacity is reduced or local overheating is easily caused due to the fact that the double-moving-contact-piece clamping structure is adopted, an auxiliary moving contact piece 2, a pin shaft 3, a support 4, a first spring 5, a second spring 6, a gasket 7, a conductive stud 8, an inclined plane 9, a contact point 10, a vertical support 11, a horizontal support 12 and a sliding rail 13, and the double-moving-contact-piece clamping structure is adopted, and the interior of the double-moving-contact-piece clamping structure is of a split independent structure. And no warping point occurs during movement, so that the current-carrying capability can be effectively improved.

Description

Technical Field

[0001] The invention relates to the field of electromechanics, and in particular to a high-current-carrying superimposed selective conductive structure. Background Art

[0002] The transformer vacuum on-load tap changer is a tap changer specially designed for transformers. During the operation of the transformer, in order to adapt to the load changes of the power grid, the output voltage of the transformer needs to be adjusted. The role of the tap changer is to achieve this function. It adjusts the output voltage of the transformer by changing the winding connection mode of the transformer to meet the requirements of the power grid load. The structure uses the connection contacts and the conductive studs in the selection actuator of the vacuum on-load tap changer equipped with the dry-type transformer for conduction;

[0003] The prior art is a single-layer copper sheet clamping structure, which is prone to warping points and virtual connections, resulting in reduced current carrying capacity or local overheating. The present invention solves the above problems. Summary of the invention

[0004] In order to solve the technical problem that the prior art is a single-layer copper sheet clamping structure, which is prone to warping points and virtual connections, resulting in reduced current carrying capacity or local overheating, the present invention provides a high-current-carrying superimposed selective conductive structure.

[0005] A high current-carrying superimposed selective conductive structure comprises: a moving contact piece and an auxiliary moving contact piece. The auxiliary moving contact piece is L-shaped. The moving contact piece and the auxiliary moving contact piece are both provided with two pairs of mirror-image settings. The two pairs of moving contact pieces and the two pairs of auxiliary moving contact pieces are both slidably connected with the pin shaft. The auxiliary moving contact piece is arranged outside the contact piece. One end of the pin shaft is connected with a bracket. A spring 1 is sleeved on the pin shaft between the two pairs of moving contact pieces. The other end of the pin shaft is sleeved with a spring 2. The two ends of the spring 2 are respectively in contact with the outer surface of the auxiliary moving contact piece and a gasket. The gasket is connected to the pin shaft. The spring 1 and the spring 2 are both in a compressed state. The force of the spring 2 on the auxiliary moving contact piece is greater than the force of the spring 1 on the moving contact piece. The conductive stud is horizontally arranged on the mirror-image center plane of the two moving contact pieces. The diameter of the conductive stud is greater than the minimum gap between the two pairs of moving contact pieces and the two pairs of auxiliary moving contact pieces.

[0006] Furthermore, the pin shaft, spring 1, spring 2 and gasket are provided in two groups, one group of pin shaft is slidably connected with the front parts of the two pairs of moving contact pieces and the auxiliary moving contact pieces, and the other group is slidably connected with the rear parts of the two pairs of moving contact pieces.

[0007] Furthermore, the upper ends and lower ends of the contact surfaces between the two pairs of moving contact pieces, the two pairs of auxiliary moving contact pieces and the conductive studs are both provided with inclined surfaces.

[0008] Furthermore, the contact points between the moving contact piece, the auxiliary moving contact piece and the conductive stud are all connected to contacts, and the contact points between the moving contact piece and the auxiliary moving contact piece are connected to contacts.

[0009] Furthermore, the conductive studs are connected to a vertical bracket in an evenly spaced vertical array, the spacing being greater than the vertical length of the moving contact piece, a horizontal bracket is connected to the lower end of the vertical bracket, a slide rail is connected to the horizontal bracket, and the bracket and the slide rail are slidably connected.

[0010] Beneficial effects of the present invention:

[0011] It adopts a double-moving contact piece clamping structure, and the internal structure is a decomposed independent structure. It will not warp during movement and can effectively increase the current carrying capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0013] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0014] Figure 3 It is a schematic diagram of the explosion of the structure of the present invention.

[0015] In the figure: a moving contact piece 1; an auxiliary moving contact piece 2; a pin shaft 3; a bracket 4; a spring 1 5; a spring 2 6; a gasket 7; a conductive stud 8; a slope 9; a contact 10; a vertical bracket 11; a horizontal bracket 12; and a slide rail 13. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] The rotational connection described in this device refers to the process of baking the bearing on the shaft, providing a spring retaining ring groove on the shaft or the shaft hole, and clamping the elastic retaining ring in the retaining ring groove to achieve axial fixation of the bearing and realize rotation; the hinged connection refers to a connection method in which activities are performed on connecting parts such as hinges, pins and short shafts, and the sliding connection refers to a connection method in which the slider slides in the slide groove.

[0018] The present invention will be described in detail below with reference to the accompanying drawings.

[0019] Embodiment 1:

[0020] The following is combined with Figure 1-3The high current superposition type selective conductive structure of this embodiment is described, comprising: a moving contact piece 1, an auxiliary moving contact piece 2, the auxiliary moving contact piece 2 is L-shaped, the moving contact piece 1 and the auxiliary moving contact piece 2 are provided with two pairs of mirror images, the two pairs of moving contact pieces 1 and the two pairs of auxiliary moving contact pieces 2 are slidably connected with the pin shaft 3, the auxiliary moving contact piece 2 is arranged outside the contact piece 1, one end of the pin shaft 3 is connected with a bracket 4, a spring 5 is sleeved on the pin shaft 3 between the two pairs of moving contact pieces 1, and the pin shaft 3 The other end is sleeved with spring 2 6, and the two ends of spring 2 6 are respectively in contact with the outer surface of auxiliary moving contact piece 2 and gasket 7, and gasket 7 is connected to the pin shaft 3. Spring 1 5 and spring 2 6 are both in a compressed state, and the force of spring 2 6 on auxiliary moving contact piece 2 is greater than the force of spring 1 5 on moving contact piece 1. Conductive stud 8 is horizontally arranged on the mirror center plane of the two moving contact pieces 1, and the diameter of conductive stud 8 is greater than the minimum gap between the two pairs of moving contact pieces 1 and the two pairs of auxiliary moving contact pieces 2;

[0021] When in use, the control bracket 4 slides vertically, and the control bracket 4 drives the two pairs of moving contact pieces 1 and the two pairs of auxiliary moving contact pieces 2 to slide through the pin shaft 3. The conductive stud 8 is horizontally arranged on the mirror center plane of the two moving contact pieces 1. The diameter of the conductive stud 8 is larger than the minimum gap between the two pairs of moving contact pieces 1 and the two pairs of auxiliary moving contact pieces 2. The conductive stud 8 slides between the two pairs of moving contact pieces 1 and the two pairs of auxiliary moving contact pieces 2. The outer moving contact pieces 1 and the auxiliary moving contact pieces 2 slide outward along the pin shaft 3, and the spring 2 6 is compressed. Under the elastic force of spring 5, the outer moving contact piece 1 and the auxiliary moving contact piece 2 keep in contact consistently and will not be disconnected due to sliding. At this time, the circuit is turned on. Under the clamping action of the moving contact piece 1 and the auxiliary moving contact piece 2, there will be no warping or virtual connection, which greatly enhances the current carrying capacity. When the conductive stud 8 is no longer clamped, since the force of spring 26 on the auxiliary moving contact piece 2 is greater than the force of spring 15 on the moving contact piece 1, spring 26 pops out and spring 5 is compressed, and the moving contact piece 1 and the auxiliary moving contact piece 2 are reset.

[0022] There are two groups of pin shaft 3, spring 1 5, spring 2 6 and gasket 7. One group of pin shaft 3 is slidably connected with the head of two pairs of moving contact pieces 1 and auxiliary moving contact pieces 2, and the other group is slidably connected with the tail of two pairs of moving contact pieces 1.

[0023] Two sets of spring one 5 and spring two 6 make the connection more stable and prevent false connection.

[0024] The upper and lower ends of the contact surfaces of the two pairs of moving contact pieces 1, the two pairs of auxiliary moving contact pieces 2 and the conductive studs 8 are both provided with inclined surfaces 9;

[0025] The inclined surface 9 enables the conductive stud 8 to better enter between the two pairs of moving contact pieces 1 and the two pairs of auxiliary moving contact pieces 2 .

[0026] The contact points of the moving contact piece 1, the auxiliary moving contact piece 2 and the conductive stud 8 are all connected to the contact point 10, and the contact point of the moving contact piece 1 and the auxiliary moving contact piece 2 is connected to the contact point 10;

[0027] The conductive studs 8 are connected to the vertical bracket 11 in an evenly spaced vertical array, and the spacing is greater than the vertical length of the moving contact piece 1. The lower end of the vertical bracket 11 is connected to the horizontal bracket 12, and the horizontal bracket 12 is connected to the slide rail 13. The bracket 4 is slidably connected to the slide rail 13;

[0028] The conductive stud 8 is powered on, powered off, or switched by controlling the bracket 4 to slide along the slide rail 13 .

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. High current carrying superposition selective conductive structure, characterized by: include: The movable contact piece (1) and the auxiliary movable contact piece (2) are L-shaped. The movable contact piece (1) and the auxiliary movable contact piece (2) are both provided with two pairs of mirror-image arrangements. The two pairs of movable contact pieces (1) and the two pairs of auxiliary movable contact pieces (2) are both slidably connected to the pin shaft (3). The auxiliary movable contact piece (2) is arranged outside the contact piece (1). One end of the pin shaft (3) is connected to a bracket (4). A spring 1 (5) is sleeved on the pin shaft (3) between the two pairs of movable contact pieces (1). The other end of the pin shaft (3) is sleeved with a spring 2 (6). The two ends of the second spring (6) are in contact with the outer surface of the auxiliary moving contact piece (2) and the gasket (7) respectively. The gasket (7) is connected to the pin shaft (3). The first spring (5) and the second spring (6) are both in a compressed state. The force of the second spring (6) on the auxiliary moving contact piece (2) is greater than the force of the first spring (5) on the moving contact piece (1). The conductive stud (8) is horizontally arranged on the mirror center plane of the two moving contact pieces (1). The diameter of the conductive stud (8) is greater than the minimum gap between the two pairs of moving contact pieces (1) and the two pairs of auxiliary moving contact pieces (2).

2. The high current carrying superposition type selective conductive structure according to claim 1, characterized in that: The pin shaft (3), spring 1 (5), spring 2 (6) and gasket (7) are provided in two groups, one group of the pin shaft (3) is slidably connected to the front parts of the two pairs of moving contact pieces (1) and the auxiliary moving contact pieces (2), and the other group is slidably connected to the rear parts of the two pairs of moving contact pieces (1).

3. The high current carrying superposition type selective conductive structure according to claim 1, characterized in that: Inclined surfaces (9) are provided at the upper and lower ends of the contact surfaces between the two pairs of movable contact pieces (1), the two pairs of auxiliary movable contact pieces (2) and the conductive studs (8).

4. The high current carrying superposition type selective conductive structure according to claim 1, characterized in that: The contact points between the moving contact piece (1), the auxiliary moving contact piece (2) and the conductive stud (8) are all connected to the contact point (10), and the contact point between the moving contact piece (1) and the auxiliary moving contact piece (2) is connected to the contact point (10).

5. The high current carrying superposition type selective conductive structure according to claim 1, characterized in that: The conductive studs (8) are connected to a vertical bracket (11) in an evenly spaced vertical array, wherein the spacing is greater than the vertical length of the moving contact piece (1); a horizontal bracket (12) is connected to the lower end of the vertical bracket (11); a slide rail (13) is connected to the horizontal bracket (12); and the bracket (4) is slidably connected to the slide rail (13).

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