A rectangular busbar grounding switch

Abstract

The present invention relates to the technical field of grounding knife switches, and specifically to a rectangular busbar grounding knife switch. It comprises a rectangular busbar, a static contact connected to the rectangular busbar, and a moving contact that can move along a preset path, a connecting plate is arranged on the static contact, a contact finger group is arranged on the connecting plate, two contact fingers are respectively fixed to the two ends of the connecting plate by elastic connectors, the width of the open end of the space between the two contact fingers is greater than the width of the rear end, and the rear end is an end close to the connecting plate; the contact finger group is arranged on the moving path of the end of the moving contact. The present invention can achieve full connection between the moving contact and the static contact when conduction is required through the contact and separation between the contact finger groups elastically arranged on the moving contact and the static contact, and can achieve easy separation between the moving contact and the static contact when conduction is not required, so that the present invention has the advantages of simple installation, reliable separation and combination, strong versatility, etc., and can fully meet the requirements of field equipment operation.

Description

Technical Field

[0001] The invention relates to the technical field of grounding switches, and in particular to a rectangular busbar grounding switch. Background Art

[0002] At present, the installation methods of indoor transmission lines in power systems are mainly divided into two types: open busbar and closed busbar. The open rectangular busbar is one of the most widely used installation methods among open busbars and is widely used in large indoor transmission line systems. During the use of the open rectangular busbar, it is necessary to perform separation and connection grounding operations as the operation mode changes. Therefore, it is necessary to install a grounding knife switch device to meet the operation requirements of the system. However, the existing grounding devices generally have the problems of complex installation, low separation and connection reliability and low versatility, and cannot meet the operation requirements of on-site equipment. Summary of the invention

[0003] The present invention provides a rectangular busbar grounding switch, which solves the problems of complex installation, low separation and connection reliability and low versatility in the prior art.

[0004] The technical solution adopted by the present invention is:

[0005] A rectangular busbar grounding switch comprises a rectangular busbar, a stationary contact connected to the rectangular busbar and a moving contact that can move along a preset path, wherein a connecting plate is arranged on the stationary contact, a contact finger group is arranged on the connecting plate, the contact finger group comprises two contact fingers arranged opposite to each other, the two contact fingers are respectively fixed at the two ends of the connecting plate by elastic connecting pieces, the ends of the contact fingers protrude outward, the width of the open end of the space between the two contact fingers is greater than the width of the rear end, and the rear end is an end close to the connecting plate; the contact finger group is arranged on the movement path of the end of the moving contact.

[0006] As a preferred embodiment of the above technical solution, the contact finger group includes four contact fingers arranged side by side, a total of eight contact fingers are provided, and the contact finger groups can be increased or decreased according to needs.

[0007] As a preferred embodiment of the above technical solution, the contact finger includes a connecting portion and a protruding portion, one end of the connecting portion is connected to the connecting plate, and the other end is connected to the protruding portion, and an angle of 140°-150° is formed between the protruding portion and the connecting portion.

[0008] As a preferred embodiment of the above technical solution, the rectangular busbar is connected to the static contact through a connecting mechanism, the connecting mechanism includes a connecting rod and a mounting plate, the mounting plate is threadedly connected to the rectangular busbar through screws, the connecting rod is welded to the mounting plate, the connecting rod is arranged in the middle of the mounting plate, and is parallel to the two side edges of the mounting plate.

[0009] As a preferred embodiment of the above technical solution, the mounting plate is a copper plate, and a silver-plated layer is provided between the bottom of the mounting plate and the connecting surface of the rectangular busbar to form a copper-aluminum transition surface, and the connecting rod is a hollow copper rod made of red copper.

[0010] As a preferred embodiment of the above technical solution, the width of the mounting plate is less than or equal to the width of the rectangular busbar; the connecting rod is cylindrical, and the surfacing point where the connecting rod is welded to the mounting plate is the opposite side of the connecting surface between the mounting plate and the rectangular busbar.

[0011] As a preferred embodiment of the above technical solution, the static contact also includes a clamping piece 1 and a clamping piece 2, one end of the clamping piece 2 is connected to the clamping piece 1, and the other end is connected to the connecting plate, and a fixing hole for fixing the connecting rod is provided between the clamping piece 1 and the clamping piece 2; the static contact is made of copper, the clamping piece 1 is a semicircular structure, the clamping piece 2 is a semicircular structure, the clamping piece 1 and the clamping piece 2 together form a circular hoop to fix the connecting rod, and the clamping piece 1 and the clamping piece 2 are connected by bolts.

[0012] As a preferred embodiment of the above technical solution, a fixing column is provided on the connecting plate, and a through hole is provided on the contact finger for the fixing column to pass through. After the fixing column passes through the through hole, a spring is also sleeved thereon, and a cotter pin is penetrated through the fixing column at the top of the spring; when the end of the moving contact enters the opening of the contact finger group, the contact finger is pressed to both sides to increase the contact surface between the moving contact and the static contact, and when the moving contact leaves the contact finger group, the contact finger group is restored under the elastic force of the spring, so that the moving contact and the static contact are fully in contact and fully conductive.

[0013] As a preferred embodiment of the above technical solution, the moving contact is fixedly arranged on a transmission mechanism, and the transmission mechanism includes a rotating shaft, which is rotatably connected to a bracket through a bearing, and a handle for rotating the rotating shaft is connected to the end of the rotating shaft; the rotating shaft is a steel pipe, and the rotating shaft is welded to the connecting pipe. When the rotating shaft rotates, the moving contact part will rotate together to realize the opening and closing operation of the grounding switch; the outside of the rotating shaft is inserted into the bearing through an interference fit, and the outside of the bearing is welded to a steel structure bracket, and the bracket is fixed to the ground, thereby forming a support frame so that the rotating shaft can be rotated; a circular steel pipe is welded to the end of the rotating shaft to form an operating handle. When the operating handle is moved, the rotating shaft and the moving contact part rotate together to realize the opening and closing operation of the grounding switch.

[0014] As a preferred embodiment of the above technical solution, the moving contact includes a contact and a connecting tube, the connecting tube is fixedly arranged on the rotating shaft, the end of the connecting tube connected to the contact is provided with an internal thread, the end of the contact connected to the connecting tube is provided with an external thread, and the contact is threadedly connected to the connecting tube. The contact is a solid copper rod, the diameter of the end of the contact is smaller than the width of the open end of the space between the two contact fingers, and larger than the width of the rear end, the rear end is the end of the contact finger close to the connecting plate; the length of the thread is greater than or equal to 10cm, the connecting tube is a steel pipe, before the contact is threadedly connected to the connecting tube, apply power composite grease or vaseline to the internal thread of the connecting tube and the external thread of the contact, and then thread the contact to the connecting tube.

[0015] The beneficial effects of the present invention are:

[0016] The present invention realizes the full connection between the moving contact and the static contact through the contact and separation between the elastically arranged contact finger groups on the moving contact and the static contact when conduction is required, and can easily separate the moving contact and the static contact when conduction is not required, so that the present invention has the advantages of simple installation, reliable separation and connection, strong versatility, etc., and can fully meet the requirements of field equipment operation. In addition, the present invention has low technical requirements, simple implementation, low cost, and little time consumption, and has great promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is an enlarged schematic diagram of the front view of the connection mechanism and the rectangular busbar structure of the present invention;

[0020] Figure 3 yes Figure 1 The enlarged schematic diagram at A in the middle;

[0021] Figure 4 This is an enlarged schematic diagram of the main view of the static contact structure of the present invention;

[0022] Figure 5 yes Figure 4 Middle BB section enlarged schematic diagram;

[0023] Figure 6 It is an enlarged schematic cross-sectional view of the moving contact structure of the present invention.

[0024] In the figure: 1. rectangular busbar; 2. connecting mechanism; 21. connecting rod; 22. mounting plate; 23. screw; 24. welding point; 3. moving contact; 31. contact; 32. connecting pipe; 4. transmission mechanism; 41. bracket; 42. rotating shaft; 43. handle; 5. static contact; 51. clamping piece 1; 52. clamping piece 2; 53. fixing hole; 54. connecting plate; 55. contact finger group; 56. gasket; 57. spring; 58. cotter pin; 59. fixing column. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. The specific structures and functional details disclosed herein are only used to describe the exemplary embodiments of the present invention. However, the present invention can be embodied in many alternative forms, and it should not be understood that the present invention is limited to the embodiments set forth herein.

[0026] It should be understood that the terms first, second, etc. are only used to distinguish descriptions and should not be understood as indicating or implying relative importance. Although the terms first, second, etc. may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another unit. For example, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit without departing from the scope of the exemplary embodiments of the present invention.

[0027] It should be understood that the term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another relationship between associated objects, indicating that two relationships may exist. For example, A / and B can represent two situations: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0028] It should be understood that in the description of the present invention, the terms "upper", "vertical", "inside", "outside" and the like indicate orientations or positional relationships that are customarily placed when the product of the invention is used, or are orientations or positional relationships that are customarily understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] It should be understood that when an element is referred to as being "connected," "connected," or "coupled" to another element, it can be directly connected or coupled to the other element, or intervening elements may be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.).

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The terms used herein are only used to describe specific embodiments and are not intended to limit the exemplary embodiments of the present invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates the opposite meaning. It should also be understood that the terms "include", "comprise", "include", and / or "comprising" when used herein specify the existence of the claimed features, integers, steps, operations, units and / or components, and do not exclude the existence or increase of one or more other features, quantities, steps, operations, units, components and / or their combinations.

[0032] It should also be noted that in some alternative embodiments, the functions / acts that appear may be different from the order in which the figures appear. For example, depending on the functions / acts involved, they may actually be performed substantially concurrently, or two figures shown in succession may sometimes be performed in the reverse order.

[0033] In the following description, specific details are provided to facilitate a complete understanding of the example embodiments. However, it should be understood by those of ordinary skill in the art that the example embodiments may be implemented without these specific details. For example, the system may be shown in a block diagram to avoid obscuring the example with unnecessary details. In other embodiments, well-known processes, structures, and techniques may not be shown in unnecessary detail to avoid obscuring the example embodiments.

[0034] Embodiment 1:

[0035] This embodiment provides a rectangular busbar grounding switch, such as Figures 1 to 6 shown.

[0036] A rectangular busbar grounding switch comprises a rectangular busbar 1, a stationary contact 5 connected to the rectangular busbar and a moving contact 3 which can move along a preset path, a connecting plate 54 being provided on the stationary contact 5, a contact finger group 55 being provided on the connecting plate 54, the contact finger group 55 comprising two contact fingers which are arranged opposite to each other, the two contact fingers being respectively fixed at the two ends of the connecting plate 54 by elastic connecting members, the ends of the contact fingers protruding outward, the width of the open end of the space between the two contact fingers being greater than the width of the rear end, the rear end being an end close to the connecting plate 54; the contact finger group 55 is arranged on the movement path of the end of the moving contact 3.

[0037] The contact finger groups 55 include four contact fingers arranged side by side, and a total of eight contact fingers are provided. The contact finger groups 55 can be increased or decreased according to needs.

[0038] The contact finger includes a connecting portion and a protruding portion. One end of the connecting portion is connected to the connecting plate 54, and the other end is connected to the protruding portion. An angle of 140°-150° is formed between the protruding portion and the connecting portion.

[0039] The rectangular busbar 1 is connected to the static contact 5 through a connecting mechanism 2, and the connecting mechanism 2 includes a connecting rod 21 and a mounting plate 22. The mounting plate 22 is threadedly connected to the rectangular busbar 1 through screws 23. The connecting rod 21 is welded to the mounting plate 22. The connecting rod 21 is arranged in the middle of the mounting plate 22 and is parallel to the two side edges of the mounting plate 22.

[0040] The mounting plate 22 is a copper plate, and a silver-plated layer is provided at the connection surface between the bottom of the mounting plate 22 and the rectangular busbar 1 to form a copper-aluminum transition surface. The connecting rod 21 is a hollow copper rod made of red copper.

[0041] The width of the mounting plate 22 is less than or equal to the width of the rectangular busbar 1 ; the connecting rod 21 is cylindrical, and the surfacing point 24 where the connecting rod 21 and the mounting plate 22 are welded is the opposite side of the connecting surface of the mounting plate 22 and the rectangular busbar 1 .

[0042] The static contact 5 also includes a clamping piece 51 and a clamping piece 52, one end of the clamping piece 52 is connected to the clamping piece 51, and the other end is connected to the connecting plate 54, and a fixing hole 53 for fixing the connecting rod 21 is provided between the clamping piece 51 and the clamping piece 52; the static contact 5 is made of red copper, the clamping piece 51 is a semicircular structure, the clamping piece 52 is a semicircular structure, the clamping piece 51 and the clamping piece 52 together form a circular hoop to fix the connecting rod 21, and the clamping piece 51 and the clamping piece 52 are connected by bolts.

[0043] The connecting plate 54 is provided with a fixing column 59, and the contact finger is provided with a through hole for the fixing column 59 to pass through. After the fixing column 59 passes through the through hole, a spring 57 is also sleeved thereon, and a cotter pin 58 is penetrated through the fixing column 59 at the top of the spring 57; when the end of the moving contact 3 enters the opening of the contact finger group 55, the contact fingers are pressed to both sides to increase the contact surface between the moving contact 3 and the static contact 5; when the moving contact 3 leaves the contact finger group 55, the contact finger group 55 is restored under the elastic force of the spring 57, so that the moving contact 3 and the static contact 5 are fully in contact and fully conductive.

[0044] The moving contact 3 is fixedly arranged on the transmission mechanism 4, and the transmission mechanism 4 includes a rotating shaft 42, which is rotatably connected to the bracket 41 through a bearing, and the end of the rotating shaft 42 is connected to a handle 43 for rotating the rotating shaft 42; the rotating shaft 42 is a steel pipe, and the rotating shaft 42 is welded to the connecting pipe 32. When the rotating shaft 42 rotates, the moving contact 3 part will rotate together to realize the opening and closing operation of the grounding knife switch; the outside of the rotating shaft 42 is inserted into the bearing through an interference fit, and the outside of the bearing is welded to the steel structure bracket 41, and the bracket 41 is fixed to the ground, thereby forming a support frame so that the rotating shaft can be rotated; a round steel pipe is welded to the end of the rotating shaft 42 to form an operating handle 43. When the operating handle 43 is moved, the rotating shaft 42 and the moving contact 3 part rotate together to realize the opening and closing operation of the grounding knife switch.

[0045] The moving contact 3 includes a contact 31 and a connecting tube 32. The connecting tube 32 is fixedly arranged on the rotating shaft 42. The end of the connecting tube 32 connected to the contact 31 is provided with an internal thread, and the end of the contact 31 connected to the connecting tube 32 is provided with an external thread. The contact 31 is threadedly connected to the connecting tube 32. The contact 31 is a solid copper rod. The diameter of the end of the contact is smaller than the width of the open end of the space between the two contact fingers and larger than the width of the rear end, which is the end of the contact finger close to the connecting plate 54. The length of the thread is greater than or equal to 10 cm. The connecting tube 32 is a steel pipe. Before the contact 31 is threadedly connected to the connecting tube 32, apply power composite grease or vaseline to the internal thread of the connecting tube 32 and the external thread of the contact 31, and then thread the contact 31 to the connecting tube 32.

[0046] The present invention uses the contact and separation between the movable contact 3 and the contact finger group 55 elastically arranged on the stationary contact 5 to achieve full connection between the movable contact 3 and the stationary contact 5 when conduction is required, and can easily separate the movable contact 3 and the stationary contact 5 when conduction is not required, so that the present invention has the advantages of simple installation, reliable separation and connection, strong versatility, etc., and can fully meet the requirements of field equipment operation. In addition, the present invention has low technical requirements, simple implementation, low cost, and less time consumption, and has great promotion value.

[0047] The installation method of the present invention comprises the following steps:

[0048] S1, making the connection mechanism 2, drilling holes in the mounting plate 22 and the rectangular busbar 1, and fastening the side of the mounting plate 22 with the silver-plated surface to the rectangular busbar 1 by screws 23;

[0049] S2, fix the connecting rod 21 in the fixing hole 53 between the clamping piece 1 51 and the clamping piece 2 52 on the stationary contact 5;

[0050] S3, the contact 31 of the moving contact 3 and the connecting pipe 32 are combined into a whole by threading, and compound grease or vaseline is applied to the threads before threading;

[0051] S4, fully weld the connecting tube 32 of the moving contact 3 and the transmission mechanism 4, combine the two parts into a whole, and then fix the whole on the ground through the bracket 41. By pulling the operating handle 43 of the connecting mechanism 2, the moving contact 3 can be driven to rotate to perform opening and closing operations.

[0052] Embodiment 2:

[0053] This embodiment provides a rectangular busbar grounding switch, such as Figures 1 to 6 shown.

[0054] A rectangular busbar grounding switch comprises a rectangular busbar 1, a stationary contact 5 connected to the rectangular busbar and a moving contact 3 which can move along a preset path, a connecting plate 54 being provided on the stationary contact 5, a contact finger group 55 being provided on the connecting plate 54, the contact finger group 55 comprising two contact fingers which are arranged opposite to each other, the two contact fingers being respectively fixed at the two ends of the connecting plate 54 by elastic connecting members, the ends of the contact fingers protruding outward, the width of the open end of the space between the two contact fingers being greater than the width of the rear end, the rear end being an end close to the connecting plate 54; the contact finger group 55 is arranged on the movement path of the end of the moving contact 3.

[0055] The present invention uses the contact and separation between the movable contact 3 and the contact finger group 55 elastically arranged on the stationary contact 5 to achieve full connection between the movable contact 3 and the stationary contact 5 when conduction is required, and can easily separate the movable contact 3 and the stationary contact 5 when conduction is not required, so that the present invention has the advantages of simple installation, reliable separation and connection, strong versatility, etc., and can fully meet the requirements of field equipment operation. In addition, the present invention has low technical requirements, simple implementation, low cost, and less time consumption, and has great promotion value.

[0056] Embodiment 3:

[0057] This embodiment provides a rectangular busbar grounding switch, such as Figures 1 to 6 shown.

[0058] A rectangular busbar grounding switch comprises a rectangular busbar 1, a stationary contact 5 connected to the rectangular busbar and a moving contact 3 which can move along a preset path, a connecting plate 54 being provided on the stationary contact 5, a contact finger group 55 being provided on the connecting plate 54, the contact finger group 55 comprising two contact fingers which are arranged opposite to each other, the two contact fingers being respectively fixed at the two ends of the connecting plate 54 by elastic connecting members, the ends of the contact fingers protruding outward, the width of the open end of the space between the two contact fingers being greater than the width of the rear end, the rear end being an end close to the connecting plate 54; the contact finger group 55 is arranged on the movement path of the end of the moving contact 3.

[0059] The contact finger groups 55 include four contact fingers arranged side by side, and a total of eight contact fingers are provided. The contact finger groups 55 can be increased or decreased according to needs.

[0060] Embodiment 4:

[0061] This embodiment provides a rectangular busbar grounding switch, such as Figures 1 to 6 shown.

[0062] A rectangular busbar grounding switch comprises a rectangular busbar 1, a stationary contact 5 connected to the rectangular busbar, and a moving contact 3 that can move along a preset path, wherein a connecting plate 54 is arranged on the stationary contact 5, and a contact finger group 55 is arranged on the connecting plate 54, wherein the contact finger group 55 comprises two contact fingers arranged opposite to each other, and the two contact fingers are respectively fixed at the two ends of the connecting plate 54 by elastic connecting members, and the ends of the contact fingers protrude outward, and the width of the open end of the space between the two contact fingers is greater than the width of the rear end, and the rear end is an end close to the connecting plate 54; the contact finger group 55 is arranged on the moving path of the end of the moving contact 3. The contact finger comprises a connecting portion and a protruding portion, wherein one end of the connecting portion is connected to the connecting plate 54, and the other end is connected to the protruding portion, and an angle of 140°-150° is formed between the protruding portion and the connecting portion.

[0063] Embodiment 5:

[0064] This embodiment provides a rectangular busbar grounding switch, such as Figures 1 to 6 shown.

[0065] A rectangular busbar grounding switch comprises a rectangular busbar 1, a stationary contact 5 connected to the rectangular busbar, and a moving contact 3 that can move along a preset path, wherein a connecting plate 54 is provided on the stationary contact 5, and a contact finger group 55 is provided on the connecting plate 54, wherein the contact finger group 55 comprises two contact fingers that are arranged opposite to each other, and the two contact fingers are respectively fixed to the two ends of the connecting plate 54 by elastic connecting members, and the ends of the contact fingers protrude outward, and the width of the open end of the space between the two contact fingers is greater than the width of the rear end, and the rear end is an end close to the connecting plate 54; the contact finger group 55 is arranged on the moving path of the end of the moving contact 3. The rectangular busbar 1 is connected to the stationary contact 5 by a connecting mechanism 2, and the connecting mechanism 2 comprises a connecting rod 21 and a mounting plate 22, and the mounting plate 22 is threadedly connected to the rectangular busbar 1 by screws 23, and the connecting rod 21 is welded to the mounting plate 22, and the connecting rod 21 is arranged in the middle of the mounting plate 22 and is parallel to the two sides of the mounting plate 22.

[0066] Embodiment 6:

[0067] This embodiment provides a rectangular busbar grounding switch, such as Figures 1 to 6 shown.

[0068] A rectangular busbar grounding switch comprises a rectangular busbar 1, a stationary contact 5 connected to the rectangular busbar and a moving contact 3 which can move along a preset path, a connecting plate 54 being provided on the stationary contact 5, a contact finger group 55 being provided on the connecting plate 54, the contact finger group 55 comprising two contact fingers which are arranged opposite to each other, the two contact fingers being respectively fixed at the two ends of the connecting plate 54 by elastic connecting members, the ends of the contact fingers protruding outward, the width of the open end of the space between the two contact fingers being greater than the width of the rear end, the rear end being an end close to the connecting plate 54; the contact finger group 55 is arranged on the movement path of the end of the moving contact 3.

[0069] The rectangular busbar 1 is connected to the static contact 5 through a connecting mechanism 2, and the connecting mechanism 2 includes a connecting rod 21 and a mounting plate 22. The mounting plate 22 is threadedly connected to the rectangular busbar 1 through a screw 23. The connecting rod 21 is welded on the mounting plate 22. The connecting rod 21 is arranged in the middle of the mounting plate 22 and is parallel to the two sides of the mounting plate 22. The mounting plate 22 is a copper plate, and a silver-plated layer is arranged on the bottom of the mounting plate 22 and the connecting surface of the rectangular busbar 1 to form a copper-aluminum transition surface. The connecting rod 21 is a hollow copper rod made of red copper.

[0070] Embodiment 7:

[0071] This embodiment provides a rectangular busbar grounding switch, such as Figures 1 to 6 shown.

[0072] A rectangular busbar grounding switch comprises a rectangular busbar 1, a stationary contact 5 connected to the rectangular busbar and a moving contact 3 which can move along a preset path, a connecting plate 54 being provided on the stationary contact 5, a contact finger group 55 being provided on the connecting plate 54, the contact finger group 55 comprising two contact fingers which are arranged opposite to each other, the two contact fingers being respectively fixed at the two ends of the connecting plate 54 by elastic connecting members, the ends of the contact fingers protruding outward, the width of the open end of the space between the two contact fingers being greater than the width of the rear end, the rear end being an end close to the connecting plate 54; the contact finger group 55 is arranged on the movement path of the end of the moving contact 3.

[0073] The rectangular busbar 1 is connected to the static contact 5 through a connecting mechanism 2, and the connecting mechanism 2 includes a connecting rod 21 and a mounting plate 22. The mounting plate 22 is threadedly connected to the rectangular busbar 1 through screws 23. The connecting rod 21 is welded to the mounting plate 22. The connecting rod 21 is arranged in the middle of the mounting plate 22 and is parallel to the two side edges of the mounting plate 22.

[0074] The width of the mounting plate 22 is less than or equal to the width of the rectangular busbar 1 ; the connecting rod 21 is cylindrical, and the surfacing point 24 where the connecting rod 21 and the mounting plate 22 are welded is the opposite side of the connecting surface of the mounting plate 22 and the rectangular busbar 1 .

[0075] Embodiment 8:

[0076] This embodiment provides a rectangular busbar grounding switch, such as Figures 1 to 6 shown.

[0077] A rectangular busbar grounding switch comprises a rectangular busbar 1, a stationary contact 5 connected to the rectangular busbar and a moving contact 3 which can move along a preset path, a connecting plate 54 being provided on the stationary contact 5, a contact finger group 55 being provided on the connecting plate 54, the contact finger group 55 comprising two contact fingers which are arranged opposite to each other, the two contact fingers being respectively fixed at the two ends of the connecting plate 54 by elastic connecting members, the ends of the contact fingers protruding outward, the width of the open end of the space between the two contact fingers being greater than the width of the rear end, the rear end being an end close to the connecting plate 54; the contact finger group 55 is arranged on the movement path of the end of the moving contact 3.

[0078] The rectangular busbar 1 is connected to the static contact 5 through a connecting mechanism 2, and the connecting mechanism 2 includes a connecting rod 21 and a mounting plate 22. The mounting plate 22 is threadedly connected to the rectangular busbar 1 through screws 23. The connecting rod 21 is welded to the mounting plate 22. The connecting rod 21 is arranged in the middle of the mounting plate 22 and is parallel to the two side edges of the mounting plate 22.

[0079] The static contact 5 also includes a clamping piece 51 and a clamping piece 52, one end of the clamping piece 52 is connected to the clamping piece 51, and the other end is connected to the connecting plate 54, and a fixing hole 53 for fixing the connecting rod 21 is provided between the clamping piece 51 and the clamping piece 52; the static contact 5 is made of red copper, the clamping piece 51 is a semicircular structure, the clamping piece 52 is a semicircular structure, the clamping piece 51 and the clamping piece 52 together form a circular hoop to fix the connecting rod 21, and the clamping piece 51 and the clamping piece 52 are connected by bolts.

[0080] Embodiment 9:

[0081] This embodiment provides a rectangular busbar grounding switch, such as Figures 1 to 6 shown.

[0082] A rectangular busbar grounding switch comprises a rectangular busbar 1, a stationary contact 5 connected to the rectangular busbar and a moving contact 3 which can move along a preset path, a connecting plate 54 being provided on the stationary contact 5, a contact finger group 55 being provided on the connecting plate 54, the contact finger group 55 comprising two contact fingers which are arranged opposite to each other, the two contact fingers being respectively fixed at the two ends of the connecting plate 54 by elastic connecting members, the ends of the contact fingers protruding outward, the width of the open end of the space between the two contact fingers being greater than the width of the rear end, the rear end being an end close to the connecting plate 54; the contact finger group 55 is arranged on the movement path of the end of the moving contact 3.

[0083] The rectangular busbar 1 is connected to the static contact 5 through a connecting mechanism 2, and the connecting mechanism 2 includes a connecting rod 21 and a mounting plate 22. The mounting plate 22 is threadedly connected to the rectangular busbar 1 through screws 23. The connecting rod 21 is welded to the mounting plate 22. The connecting rod 21 is arranged in the middle of the mounting plate 22 and is parallel to the two side edges of the mounting plate 22.

[0084] The static contact 5 also includes a clamping piece 51 and a clamping piece 52, one end of the clamping piece 52 is connected to the clamping piece 51, and the other end is connected to the connecting plate 54, and a fixing hole 53 for fixing the connecting rod 21 is provided between the clamping piece 51 and the clamping piece 52; the static contact 5 is made of red copper, the clamping piece 51 is a semicircular structure, the clamping piece 52 is a semicircular structure, the clamping piece 51 and the clamping piece 52 together form a circular hoop to fix the connecting rod 21, and the clamping piece 51 and the clamping piece 52 are connected by bolts.

[0085] The connecting plate 54 is provided with a fixing column 59, and the contact finger is provided with a through hole for the fixing column 59 to pass through. After the fixing column 59 passes through the through hole, a spring 57 is also sleeved thereon, and a cotter pin 58 is penetrated through the fixing column 59 at the top of the spring 57; when the end of the moving contact 3 enters the opening of the contact finger group 55, the contact fingers are pressed to both sides to increase the contact surface between the moving contact 3 and the static contact 5; when the moving contact 3 leaves the contact finger group 55, the contact finger group 55 is restored under the elastic force of the spring 57, so that the moving contact 3 and the static contact 5 are fully in contact and fully conductive.

[0086] Embodiment 10:

[0087] This embodiment provides a rectangular busbar grounding switch, such as Figures 1 to 6 shown.

[0088] A rectangular busbar grounding switch comprises a rectangular busbar 1, a stationary contact 5 connected to the rectangular busbar and a moving contact 3 which can move along a preset path, a connecting plate 54 being provided on the stationary contact 5, a contact finger group 55 being provided on the connecting plate 54, the contact finger group 55 comprising two contact fingers which are arranged opposite to each other, the two contact fingers being respectively fixed at the two ends of the connecting plate 54 by elastic connecting members, the ends of the contact fingers protruding outward, the width of the open end of the space between the two contact fingers being greater than the width of the rear end, the rear end being an end close to the connecting plate 54; the contact finger group 55 is arranged on the movement path of the end of the moving contact 3.

[0089] The moving contact 3 is fixedly arranged on the transmission mechanism 4, and the transmission mechanism 4 includes a rotating shaft 42, which is rotatably connected to the bracket 41 through a bearing, and the end of the rotating shaft 42 is connected to a handle 43 for rotating the rotating shaft 42; the rotating shaft 42 is a steel pipe, and the rotating shaft 42 is welded to the connecting pipe 32. When the rotating shaft 42 rotates, the moving contact 3 part will rotate together to realize the opening and closing operation of the grounding knife switch; the outside of the rotating shaft 42 is inserted into the bearing through an interference fit, and the outside of the bearing is welded to the steel structure bracket 41, and the bracket 41 is fixed to the ground, thereby forming a support frame so that the rotating shaft can be rotated; a round steel pipe is welded to the end of the rotating shaft 42 to form an operating handle 43. When the operating handle 43 is moved, the rotating shaft 42 and the moving contact 3 part rotate together to realize the opening and closing operation of the grounding knife switch.

[0090] Embodiment 11:

[0091] This embodiment provides a rectangular busbar grounding switch, such as Figures 1 to 6 shown.

[0092] A rectangular busbar grounding switch comprises a rectangular busbar 1, a stationary contact 5 connected to the rectangular busbar and a moving contact 3 which can move along a preset path, a connecting plate 54 being provided on the stationary contact 5, a contact finger group 55 being provided on the connecting plate 54, the contact finger group 55 comprising two contact fingers which are arranged opposite to each other, the two contact fingers being respectively fixed at the two ends of the connecting plate 54 by elastic connecting members, the ends of the contact fingers protruding outward, the width of the open end of the space between the two contact fingers being greater than the width of the rear end, the rear end being an end close to the connecting plate 54; the contact finger group 55 is arranged on the movement path of the end of the moving contact 3.

[0093] The moving contact 3 is fixedly arranged on the transmission mechanism 4, and the transmission mechanism 4 includes a rotating shaft 42, which is rotatably connected to the bracket 41 through a bearing, and the end of the rotating shaft 42 is connected to a handle 43 for rotating the rotating shaft 42; the rotating shaft 42 is a steel pipe, and the rotating shaft 42 is welded to the connecting pipe 32. When the rotating shaft 42 rotates, the moving contact 3 part will rotate together to realize the opening and closing operation of the grounding knife switch; the outside of the rotating shaft 42 is inserted into the bearing through an interference fit, and the outside of the bearing is welded to the steel structure bracket 41, and the bracket 41 is fixed to the ground, thereby forming a support frame so that the rotating shaft can be rotated; a round steel pipe is welded to the end of the rotating shaft 42 to form an operating handle 43. When the operating handle 43 is moved, the rotating shaft 42 and the moving contact 3 part rotate together to realize the opening and closing operation of the grounding knife switch.

[0094] The moving contact 3 includes a contact 31 and a connecting tube 32. The connecting tube 32 is fixedly arranged on the rotating shaft 42. The end of the connecting tube 32 connected to the contact 31 is provided with an internal thread, and the end of the contact 31 connected to the connecting tube 32 is provided with an external thread. The contact 31 is threadedly connected to the connecting tube 32. The contact 31 is a solid copper rod. The diameter of the end of the contact is smaller than the width of the open end of the space between the two contact fingers and larger than the width of the rear end, which is the end of the contact finger close to the connecting plate 54. The length of the thread is greater than or equal to 10 cm. The connecting tube 32 is a steel pipe. Before the contact 31 is threadedly connected to the connecting tube 32, apply power composite grease or vaseline to the internal thread of the connecting tube 32 and the external thread of the contact 31, and then thread the contact 31 to the connecting tube 32.

[0095] The present invention is not limited to the above optional implementations, and anyone can derive other various forms of products under the enlightenment of the present invention. The above specific implementations should not be understood as limiting the scope of protection of the present invention. The scope of protection of the present invention should be based on the definition in the claims, and the description can be used to interpret the claims.

Claims

1. A rectangular busbar grounding switch, characterized in that: The invention comprises a rectangular busbar (1), a stationary contact (5) connected to the rectangular busbar, and a moving contact (3) movable along a preset path, wherein a connecting plate (54) is arranged on the stationary contact (5), a contact finger group (55) is arranged on the connecting plate (54), and the contact finger group (55) comprises two contact fingers arranged opposite to each other, the two contact fingers are respectively fixed to two ends of the connecting plate (54) by elastic connecting members, the ends of the contact fingers protrude outward, and the width of the open end of the space between the two contact fingers is greater than the width of the rear end, the rear end being an end close to the connecting plate (54); the contact finger group (55) is arranged on the moving path of the end of the moving contact (3); The rectangular busbar (1) is connected to the stationary contact (5) via a connecting mechanism (2), the connecting mechanism (2) comprising a connecting rod (21) and a mounting plate (22), the mounting plate (22) being threadedly connected to the rectangular busbar (1) via screws (23), and the connecting rod (21) being welded to the mounting plate (22); The stationary contact (5) further comprises a clamping piece 1 (51) and a clamping piece 2 (52), one end of the clamping piece 2 (52) being connected to the clamping piece 1 (51), and the other end of the clamping piece 2 (52) being connected to the connecting plate (54), and a fixing hole (53) for fixing the connecting rod (21) being provided between the clamping piece 1 (51) and the clamping piece 2 (52); The connecting plate (54) is provided with a fixing column (59), and the contact finger is provided with a through hole for the fixing column (59) to pass through. After the fixing column (59) passes through the through hole, a spring (57) is sleeved thereon, and a split pin (58) is penetrated through the fixing column (59) at the top of the spring (57); The movable contact (3) is fixedly arranged on the transmission mechanism (4), the transmission mechanism (4) comprises a rotating shaft (42), the rotating shaft (42) is rotatably connected to the bracket (41) via a bearing, and the end of the rotating shaft (42) is connected to a handle (43) for rotating the rotating shaft (42); The movable contact (3) comprises a contact (31) and a connecting tube (32); the connecting tube (32) is fixedly arranged on the rotating shaft (42); an end of the connecting tube (32) connected to the contact (31) is provided with an internal thread; an end of the contact (31) connected to the connecting tube (32) is provided with an external thread; the contact (31) and the connecting tube (32) are threadedly connected.

2. The rectangular busbar grounding switch according to claim 1 is characterized in that: The contact finger group (55) comprises four contact fingers arranged side by side.

3. The rectangular busbar grounding switch according to claim 1 is characterized in that: The contact finger comprises a connecting portion and a protruding portion, wherein one end of the connecting portion is connected to the connecting plate (54), and the other end is connected to the protruding portion, and an angle of 140°-150° is formed between the protruding portion and the connecting portion.

4. The rectangular busbar grounding switch according to claim 1 is characterized in that: The mounting plate (22) is a copper plate, and a silver-plated layer is provided on the connection surface between the bottom of the mounting plate (22) and the rectangular busbar (1).

5. The rectangular busbar grounding switch according to claim 1 is characterized in that: The width of the mounting plate (22) is less than or equal to the width of the rectangular busbar (1); the connecting rod (21) is cylindrical, and the surfacing point (24) where the connecting rod (21) and the mounting plate (22) are welded is the reverse side of the connection surface between the mounting plate (22) and the rectangular busbar (1).

Images