CN106409597A - Three-phase linkage mechanism for electrical switch and gas insulated switch thereof - Google Patents

Abstract

A three-phase linkage mechanism for an electrical switch and its gas-insulated switch. The electrical switch includes three switches, each of which has a drive shaft that can control the switch to open or close. The three-phase linkage mechanism includes three linkages device and a linkage. Wherein, each linkage device includes a guide rail, a sliding part and a gear. The slider is slidably arranged on the guide rail, and a section of rack is arranged along the sliding direction. The gear meshes with the rack and is sheathed on the corresponding drive shaft. The linkages are respectively connected to the slides, so that the slides of the three linkages can move synchronously along their sliding directions. The above-mentioned three-phase linkage mechanism for electrical switches can control the closing or opening of the other two-phase switches by controlling the closing or opening of the one-phase switch, has good synchronization, and can meet the requirements of large rotation angles of the switches.

Description

Three-phase linkage mechanism for electrical switch and its gas insulated switch

technical field

The invention relates to a three-phase linkage mechanism, in particular to a three-phase linkage mechanism for electric switches. In addition, the present invention also relates to a gas insulated switch adopting the above-mentioned three-phase linkage mechanism.

Background technique

The existing three-phase linkage mechanisms used for electrical switches (for example, gas insulated switches) are mostly connected by crank arms. Due to the limitation of the crank arm's own structure, its maximum rotation angle generally does not exceed 90 degrees. In the case that the application of the electric switch requires a large rotation angle, the existing three-phase linkage mechanism connected by the crank arm cannot meet the requirements.

Contents of the invention

The object of the present invention is to provide a three-phase linkage mechanism for electrical switches, which can control the closing or opening of the other two-phase switches by controlling the closing or opening of one phase switch, with good synchronization and can meet the requirements of large switches. Corner needs.

Another object of the present invention is to provide a gas insulated switch with the above-mentioned three-phase linkage mechanism.

The invention provides a three-phase linkage mechanism for an electrical switch, the electrical switch includes three switches, each of the switches has a drive shaft that can control the switch to be opened or closed, and the three-phase linkage mechanism includes three linkage and a linkage. Wherein, each linkage device includes a guide rail, a sliding part and a gear. The slider is slidably arranged on the guide rail, and a section of rack is arranged along the sliding direction. The gear meshes with the rack and is sheathed on the corresponding drive shaft. The linkages are respectively connected to the slides, so that the slides of the three linkages can move synchronously along their sliding directions. The three-phase linkage mechanism with the above-mentioned structure has good synchronization and can meet the requirement of large rotation angle of the switch.

In a schematic embodiment of a three-phase linkage mechanism for an electrical switch, the linkage is composed of two linkage rods, and the two ends of each linkage rod are respectively connected to the sliders of two adjacent linkage devices.

In a schematic embodiment of a three-phase linkage mechanism for an electrical switch, the linkage is a linkage rod, and the two ends of the linkage rod are respectively connected to the sliders of the two linkage devices located on both sides, and the linkage The middle part of the rod connects the slider of the linkage located in the middle.

In an exemplary embodiment of a three-phase linkage mechanism for an electrical switch, the linkage rod is connected to the slider through a plurality of corresponding connecting pieces.

In one exemplary embodiment of a three-phase linkage for an electrical switch, a gear is splined to a drive shaft. With such a design, the transmission between the gear and the drive shaft can be made more reliable.

In an exemplary embodiment of a three-phase linkage mechanism for an electrical switch, the guide rail includes two guide columns that can pass through the slider. With such a design, the sliding stability of the slider can be improved.

In an exemplary embodiment of a three-phase linkage mechanism for an electrical switch, the linkage rod is arranged parallel to the guide column. Adopting such a design can simplify the structure, facilitate installation, and ensure synchronization.

In an exemplary embodiment of a three-phase linkage mechanism for an electric switch, among the three linkage devices, the connecting piece of the middle linkage device includes two connecting parts, and the connecting parts are respectively connected to a linkage rod.

The present invention also provides a gas insulated switch, which includes three switches and one of the above-mentioned three-phase linkage mechanism, each of the switches has a driving shaft that can control the opening or closing of the switch, and the three switches of the three-phase linkage mechanism The linkage devices respectively correspond to the three switches, and the gears of each linkage device are sheathed on the corresponding drive shafts.

The preferred embodiments will be described below in a clear and understandable manner with reference to the accompanying drawings, and the above-mentioned characteristics, technical features, advantages and implementation methods of the three-phase linkage mechanism for electrical switches and gas insulated switches thereof will be further described.

Description of drawings

The following drawings only illustrate and explain the present invention schematically, and do not limit the scope of the present invention.

Fig. 1 is a perspective structure diagram of a schematic implementation of a three-phase linkage mechanism for an electrical switch and a gas insulated switch.

FIG. 2 is an exploded schematic diagram illustrating a partial structure of the three-phase linkage mechanism in FIG. 1 .

FIG. 3 is used to illustrate the linkage process of the linkage device of the three-phase linkage mechanism in FIG. 1 .

Label description

12 drive shaft

20 linkage

22 rails

222 guide post

24 sliders

246 Rack

26 gears

28 connectors

282 connection part

30 linkage rod.

detailed description

In order to have a clearer understanding of the technical features, purposes and effects of the invention, the specific embodiments of the present invention are now described with reference to the accompanying drawings, in which the same reference numerals represent components with the same or similar structures but the same functions.

In this article, "schematic" means "serving as an example, example or illustration", and any illustration or implementation described as "schematic" should not be interpreted as a more preferred or more advantageous Technical solutions.

In order to make the drawing concise, each drawing only schematically shows the parts related to the present invention, and they do not represent the actual structure of the product. In addition, in order to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically shown, or only one of them is marked.

Herein, "upper", "lower", "front", "rear", "left", "right", etc. are only used to indicate the positional relationship between related parts, not to limit their absolute positions.

In this article, "parallel" and the like are not strictly restricted in the sense of mathematics and/or geometry, but also include errors understandable by those skilled in the art and allowed in manufacturing or use.

FIG. 1 is a three-dimensional structural view illustrating a schematic embodiment of a three-phase linkage mechanism of the present invention connected to a gas insulated switch. The gas insulated switch shown in Fig. 1 includes three switches (not shown) and a three-phase linkage mechanism. Three switches (for example, isolating switch, grounding switch, etc.) are arranged in three gas-insulated enclosures of the gas-insulated switch in the figure, and each switch has a drive shaft 12 that can control the opening or closing of the phase switch. The three-phase linkage mechanism includes three linkage devices 20 and a linkage piece, and the three linkage devices 20 are respectively corresponding to the switches of each phase. In the embodiment shown in the figure, the linkage includes two linkage rods 30 , and the two ends of the two linkage rods 30 are respectively connected to two adjacent linkage devices 20 .

The specific structure of the linkage device 20 can also be referred to FIG. 2 . FIG. 2 is an exploded schematic diagram illustrating a partial structure of the three-phase linkage mechanism in FIG. 1 . As shown in FIG. 2 , taking the linkage device 20 in an exploded state on the right side of the figure as an example, the linkage device 20 includes a guide rail 22 , a sliding member 24 , and a gear 26 . Wherein, the sliding member 24 is slidably disposed on the guide rail 22 . The guide rail 22 can be fixed on a base, and the base can be fixed on the casing of the gas insulated switch. The slider 24 is provided with a section of rack 246 along its sliding direction. The gear 26 can be sleeved on the drive shaft 12 corresponding to the switch, and the gear 26 is engaged with the rack 246 . The linkage rod 30 can be connected to the slider 24 . In the embodiment shown in the figure, the linkage device 20 further includes a connecting piece 28 disposed on the sliding piece 24 , and the sliding piece 24 can be connected to the linkage rod 30 through the connecting piece 28 . The linkage device 20 on the right side of Fig. 2 is in the middle of the three linkage devices 20 in Fig. 1, so in the embodiment shown in Fig. Connect a linkage rod 30. Of course, according to different design requirements, the two connecting parts 282 can also be designed as an integrated structure, and respectively connected to the linkage rods 30 on the left and right sides.

When the above-mentioned three-phase linkage mechanism is working, only one driving device needs to be designed to control the rotation of the drive shaft 12 of the one-phase switch, and the other drive shafts 12 can be driven to rotate through the linkage device 20 and the linkage parts. Corner needs. The specific linkage process can be referred to FIG. 2 and FIG. 3 at the same time. FIG. 3 mainly shows the linkage process of the linkage device 20 on one side and the linkage device 20 in the middle in FIG. 1 . If a driving device (not shown) is used to control the right drive shaft 12 to rotate clockwise in FIG. During the meshing transmission process of the gear 26 and the rack 246 , the clockwise rotation of the gear 26 will be transformed into a linear motion of the slider 24 to the left. The sliding part 24 will simultaneously drive the two connecting parts 28 arranged thereon to move, one of the connecting parts 28 is connected to the connecting part 28 of the left linkage device 20 through a linkage rod 30 to drive the left linkage device 20 in the figure to move. During this process, the connecting piece 28 will drive the slider 24 to move to the left, and when the rack 246 on the slider 24 moves to the left, through the meshing transmission with the gear 26, the straight line to the left can be moved to the left. The motion is converted into the clockwise rotation of the gear 26, and the gear 26 can further drive the left drive shaft 12 in the figure to rotate clockwise, so that the rotation of the left drive shaft 12 and the right drive shaft 12 are synchronized to realize synchronous operation.

Although in the embodiment shown in Fig. 1 and Fig. 2, the linkage includes two linkage rods 30, and the two ends of the two linkage rods 30 are respectively connected to the sliders of two adjacent linkage devices 20, but according to different design requirements , The linkage can also be a linkage rod, the two ends of the linkage rod are respectively connected to the sliders 24 of the two linkage devices 20 on both sides, and the middle part of the linkage rod is connected to the slider 24 of the linkage device 20 in the middle.

In a schematic implementation of the three-phase linkage mechanism of the electrical switch shown in FIGS. 1 and 2 , the gear 26 is connected to the drive shaft 12 through a spline. With such a design, the transmission between the gear 26 and the drive shaft 12 can be made more reliable. Of course, according to different design requirements, other ways of connection between the gear 26 and the drive shaft 12 can also be adopted.

In a schematic implementation of the three-phase linkage mechanism of the electrical switch shown in FIGS. 1 and 2 , the guide rail 22 includes two guide columns 222 that can pass through the slider 24 . With such a design, the sliding stability of the sliding member 24 can be improved. Of course, according to different design requirements, the guide rail 22 can also adopt other methods. In addition, the linkage rod 30 is arranged in parallel with the guide column 222 , such a design can simplify the structure, facilitate installation, and ensure synchronization. Of course, according to different design requirements, the linkage rod 30 may not be arranged in parallel with the guide column 22 .

The present invention also provides a gas insulated switch, as shown in FIG. 1 , which includes three switches (not shown in the figure), each of which has a drive shaft 12 capable of controlling the switch to be opened or closed. The gas insulated switch also includes the above-mentioned three-phase linkage mechanism, the three linkage devices 20 of the three-phase linkage mechanism correspond to the three switches respectively, and the gear 26 of each linkage device 20 is sleeved on the corresponding drive shaft 12 (see figure 2).

It should be understood that although this description is described according to various implementations, not each embodiment only includes an independent technical solution. This description of the description is only for clarity, and those skilled in the art should take the description as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions for feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent implementation or implementation that does not depart from the spirit of the present invention Changes, such as combination, division or repetition of features, should be included in the protection scope of the present invention.

Claims (9)

1. A three-phase linkage mechanism for an electrical switch, wherein the electrical switch comprises three switches, each of which has a drive shaft that can control the opening or closing of the switch, and the three-phase linkage mechanism comprises: Three linkages (20) respectively corresponding to each said drive shaft, each of said linkages (20) comprising: a guide rail (22), a sliding member (24), which is slidably arranged on the guide rail (22), and is provided with a section of rack (246) along its sliding direction, and A gear (26), which meshes with the rack (246), and is sleeved on the corresponding drive shaft (12); and a linkage, which is respectively connected to the slider (24), so that The sliding parts (24) of the three linkage devices (20) can move synchronously along their sliding directions. 2. The three-phase linkage mechanism as claimed in claim 1, wherein said linkage is made up of two linkage rods (30), and the two ends of each said linkage rod (30) are respectively connected to two adjacent said linkages. Said slider (24) of the linkage (20). 3. The three-phase linkage mechanism as claimed in claim 1, wherein said linkage member is a linkage rod, and the two ends of said linkage rod are respectively connected to said slides of two said linkage devices (20) positioned at both sides. A piece (24), the middle part of the linkage rod is connected to the sliding piece (24) of the linkage device (20) located in the middle. 4. The three-phase linkage mechanism according to claim 2 or 3, wherein the linkage rod is connected to the sliding piece (24) through a plurality of corresponding connecting pieces (28). 5. The three-phase linkage mechanism according to claim 4, wherein the gear (26) is spline connected to the drive shaft (12). 6. The three-phase linkage mechanism according to claim 5, wherein the guide rail (22) comprises two guide posts (222) that can pass through the sliding member (24). 7. The three-phase linkage mechanism according to claim 6, wherein the linkage rod (30) is arranged parallel to the guide column (222). 8. The three-phase linkage mechanism according to claim 2, wherein among the three linkage devices (20), the connecting piece (28) of the linkage device (20) in the middle comprises two connecting parts (282) , the connecting portion (282) is respectively connected to one of the linkage rods (30). 9. A gas insulated switch comprising three switches, each of which has a drive shaft (12) capable of controlling the switch to be opened or closed, further comprising any one of claims 1 to 8 In the three-phase linkage mechanism, the three linkage devices (20) of the three-phase linkage mechanism respectively correspond to the three switches, and the gear (26) of each linkage device (20) ) is sleeved on the corresponding drive shaft (12).