Switch gear

Abstract

The switch transmission device of the present invention relates to a transmission device for a high-voltage switch. The purpose is to provide a switch transmission device with good reliability, convenient installation and simple structure. The switch transmission device of the present invention includes a main circuit system and an isolated grounding circuit system. The main circuit system includes a main circuit operating shaft, a closing spring assembly, an opening spring assembly and a first drive plate. The main circuit operating shaft is movably mounted on the bottom plate, the closing spring assembly is mounted between the main circuit operating shaft and the first drive plate, the opening spring assembly is mounted between the first drive plate and the isolated grounding circuit, and the first drive plate is mounted on the indicating shaft; the isolated grounding circuit also includes a second drive plate, the second drive plate is movably mounted on the grounding operating shaft, a grounding transmission component is movably connected to the second drive plate, and the grounding transmission component is movably connected to a fifth connecting rod, the fifth connecting rod is used to connect the grounding shaft, the isolated grounding operating shaft is fixedly connected to a grounding crank arm, and a grounding spring is connected to the grounding crank arm.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage switches, in particular to a switch transmission device for a load switch with an upper isolating switch. Background Art

[0002] A ring main unit is an electrical device in which a group of high-voltage switchgear is installed in a metal or non-metallic insulating cabinet or made into an assembled interval ring main unit. The core part of the ring main unit uses load switches and fuses, and the switches require switch transmission devices when they are installed and used.

[0003] The existing switch transmission device generally has a drive plate, a rotating shaft and a crank arm. The rotating shaft drives the drive plate to rotate, and the drive plate drives the crank arm to rotate to achieve different functions. The existing switch transmission devices generally have problems such as inconvenient installation and debugging, many transmission parts, and poor reliability. These are all problems that need to be urgently solved in the current development of switch transmission devices. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a switch transmission device with good reliability, convenient installation and simple structure.

[0005] The switch transmission device of the present invention comprises a main circuit system and an isolation grounding circuit system.

[0006] The main circuit system comprises a main circuit operating shaft, a closing spring assembly, an opening spring assembly and a first drive plate, wherein the main circuit operating shaft is movably mounted on the bottom plate, the closing spring assembly is mounted between the main circuit operating shaft and the first drive plate, the opening spring assembly is mounted between the first drive plate and the isolation grounding operating shaft of the isolation grounding circuit, the first drive plate is mounted on the indication shaft, and the indication shaft is movably mounted on the bottom plate;

[0007] The isolated grounding loop also includes a second driving plate, which is movably mounted on the grounding operating shaft. A grounding transmission component is movably connected to the second driving plate, and the grounding transmission component is movably connected to a fifth connecting rod. The fifth connecting rod is used to connect the grounding shaft. The isolated grounding operating shaft is fixedly connected to a grounding crank arm, and a grounding spring is connected to the grounding crank arm.

[0008] The switch transmission device of the present invention, wherein a first rotating disk is fixedly mounted on the main circuit operating shaft, a tripping crank arm component is provided on one side of the main circuit operating shaft, a proton is mounted on the main shaft of the tripping crank arm component, the proton and the first rotating disk on the main circuit operating shaft are located in the same plane, and when the first rotating disk rotates, the proton can limit the first rotating disk.

[0009] In the switch transmission device of the present invention, the opening crank arm component further comprises an opening button and a spring.

[0010] The switch transmission device of the present invention, wherein the closing spring assembly includes a closing guide cylinder, on which a closing spring and a closing baffle are installed, one end of the closing guide cylinder is movably connected to the main circuit operating shaft, and the other end is hinged to the connection point of the first drive plate.

[0011] The switch transmission device of the present invention, wherein the opening spring assembly includes an opening guide cylinder, on which an opening spring and an opening baffle are installed, one end of the opening guide cylinder is hinged to the first drive plate, and the other end is provided with a long groove, and the isolation grounding operating shaft is clamped inside the long groove.

[0012] The switch transmission device of the present invention, wherein the first driving plate is movably connected to the first connecting rod, the first connecting rod is movably connected to the second connecting rod, the second connecting rod is movably installed on the first pillar, the second connecting rod is movably connected to the crank arm, and the crank arm is movably connected to the second rotating disk.

[0013] In the switch transmission device of the present invention, an arc groove is processed on the second driving plate, a pin is installed in the arc groove, the pin is connected to a third connecting rod, and the third connecting rod is movably connected to the grounding transmission component.

[0014] In the switch transmission device of the present invention, a transmission rod is fixedly connected to the rotating shaft of the grounding transmission component, the transmission rod is movably connected to the fourth connecting rod, and the fourth connecting rod is movably connected to the fifth connecting rod.

[0015] In the switch transmission device of the present invention, the grounding arm drives the grounding spring to rotate to the midpoint, and the angle rotated by the grounding arm is not less than the angle corresponding to the arc groove.

[0016] The switch transmission device of the present invention, wherein the other end of the grounding spring is mounted on the second pillar, and the second pillar is mounted on the bottom plate.

[0017] The switch transmission device of the present invention is different from the prior art in that the switch transmission device of the present invention includes two independent motion systems in one operating mechanism. Under the action of external force, the main circuit can realize closing and opening; the grounding circuit can realize closing and grounding, which simplifies the structure of the switch transmission device as a whole. The switch transmission device of the present invention makes the transmission of the load switch stable through the load switch transmission assembly, thereby improving the reliability of the switch.

[0018] The switch transmission device of the present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the switch transmission device of the present invention;

[0020] Figure 2 It is a rear view of the switch transmission device of the present invention;

[0021] Figure 3 It is a left side view of the switch transmission device of the present invention;

[0022] The markings in the figure are as follows: 2-transmission rod; 6-grounding shaft; 7-second pillar; 10-fourth connecting rod; 13-third connecting rod; 14-fifth connecting rod; 15-opening spring; 16-second driving plate; 17-grounding crank arm; 18-grounding spring; 20-isolation grounding operating shaft; 21-grounding transmission component; 22-main circuit operating shaft; 23-bottom plate; 66-opening button; 69-second rotating disk; 97-first pillar; 98-proton; 118-pin shaft; 123-opening baffle; 124-closing baffle; 139-crank arm; 143-first connecting rod; 160-second connecting rod; 161-closing spring; 163-indicator shaft; 165-opening guide cylinder; 166-first driving plate. DETAILED DESCRIPTION

[0023] The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0024] like Figure 1 As shown, the switch transmission device of the present invention includes two independent motion systems, a main circuit and an isolation grounding circuit, wherein the main circuit mainly includes components related to closing and opening, and the isolation grounding circuit includes components related to grounding.

[0025] Specifically, if Figure 1-Figure 3 As shown, the main circuit system includes a main circuit operating shaft 22, a closing spring assembly, an opening spring assembly and a first drive plate 166. The main circuit operating shaft 22 is movably mounted on the bottom plate 23 and can rotate on the bottom plate 23. The closing spring assembly is installed between the main circuit operating shaft 22 and the first drive plate 166. The opening spring assembly is installed between the first drive plate 166 and the isolation grounding operating shaft 20 of the isolation grounding circuit. The first drive plate 166 is installed on the indication shaft 163, and the indication shaft 163 is movably mounted on the bottom plate 23 and can rotate on the bottom plate 23.

[0026] A first rotating disk is installed on the main circuit operating shaft 22, and the first rotating disk rotates synchronously with the main circuit operating shaft 22. A tripping crank arm component is provided on one side of the main circuit operating shaft 22. The main shaft of the tripping crank arm component is movably installed on the bottom plate 23. A proton 98 is installed on the main shaft of the tripping crank arm component, and the proton 98 is located in the same plane as the first rotating disk on the main circuit operating shaft 22. When the first rotating disk rotates, the proton 98 can be used to limit the first rotating disk. The tripping crank arm component also includes a tripping button 66 and a spring. After pressing the tripping button 66, the main shaft and the proton 98 will rotate under the action of the spring.

[0027] The closing spring assembly includes a closing guide cylinder, on which a closing spring 161 and a closing baffle 124 are mounted. One end of the closing guide cylinder is connected to the main circuit operating shaft 22 and can rotate with the main circuit operating shaft 22; the other end of the closing guide cylinder is hinged to the lower connection point of the first drive plate 166. The closing guide cylinder can drive the first drive plate 166 to rotate along the indicating shaft 163.

[0028] The opening spring assembly is installed between the first drive plate 166 and the isolation grounding operating shaft 20 of the isolation grounding circuit. The opening spring assembly includes an opening guide cylinder 165, on which the opening spring 15 and the opening baffle 123 are installed. One end of the opening guide cylinder 165 is hinged to the first drive plate 166. The other end of the opening guide cylinder 165 is provided with a long groove, and the isolation grounding operating shaft 20 is clamped inside the long groove. The opening spring assembly can rotate around the point of hinge with the first drive plate 166, and can also make a linear motion in the direction of the isolation grounding operating shaft 20 and the length of the long groove.

[0029] The first driving plate 166 is connected to the first connecting rod 143 through the pin 118, and the first connecting rod 143 is connected to the second connecting rod 160 through the pin. The second connecting rod 160 is movably mounted on the first pillar 97 through a bolt, and the second connecting rod 160 can rotate around the first pillar 97. The first pillar 97 is fixedly mounted on the bottom plate 23. The second connecting rod 160 is connected to the crank arm 139 through the pin, and the crank arm 139 is connected to the second rotating disk 69 through the pin. The second rotating disk 69 is movably mounted on the bottom plate 23 through the pin.

[0030] The isolated grounding loop system includes a grounding operation shaft 20 and a second driving plate 16, and the second driving plate 16 is mounted on the grounding operation shaft 20 and can rotate with the isolated grounding operation shaft 20. An arc groove is processed on the second driving plate 16, and a pin is installed in the arc groove, and the pin is connected to the third connecting rod 13. The third connecting rod 13 is connected to the grounding transmission component 21 through the pin, and the rotating shaft of the grounding transmission component 21 is movably mounted on the bottom plate 23. The rotating shaft of the grounding transmission component 21 is also fixedly connected to the transmission rod 2, and the transmission rod 2 is connected to the fourth connecting rod 10 through the pin, and the fourth connecting rod 10 is connected to the fifth connecting rod 14 through the pin. The fifth connecting rod 14 is used to connect the grounding shaft 6 to achieve grounding operation.

[0031] The grounding crank arm 17 is fixedly connected to the isolation grounding operation shaft 20 through a pin shaft, and the grounding crank arm 17 is connected to a grounding spring 18, and the other end of the grounding spring 18 is mounted on the second pillar 7, and the second pillar 7 is mounted on the bottom plate 23. The grounding crank arm 17 can drive the grounding spring 18 to rotate, and the angle of rotation of the grounding crank arm 17 driving the grounding spring 18 to rotate to the midpoint is not less than the angle corresponding to the arc groove.

[0032] The switch transmission device of the present invention includes multiple working states such as main circuit closing and opening, isolation and grounding closing, and its working principle is as follows:

[0033] During the main circuit closing and grounding closing process, the main circuit operating shaft 22 rotates clockwise to perform the main circuit closing operation, and the main circuit operating shaft 22 drives the closing guide cylinder component to rotate around the hinge point of the first drive plate 166 component. The closing spring 161 on the closing guide cylinder component is compressed, and the closing spring 161 is compressed to apply force to the first drive plate 166 component, thereby driving the first drive plate 166 to rotate clockwise. The rotation of the first drive plate 166 drives the opening guide cylinder 165 component to move around the isolation grounding operating shaft 20 and the first drive plate 166, thereby driving the opening spring 15 to be compressed. When the main circuit operating shaft 22 rotates a certain angle, it will pass the midpoint. After passing the midpoint, the proton 98 on the opening lever arm component and the rotating disk on the main circuit operating shaft 22 are blocked by the spring force to maintain this position, and the main circuit closing is completed. The first driving plate 166 component drives the first connecting rod 143 to move during the closing process, and the first connecting rod 143 drives the second connecting rod 160, the crank arm 139, and the second rotating disk 69 to rotate, and the second rotating disk 69 rotates counterclockwise.

[0034] During the main circuit opening and grounding closing process, the opening button 66 is pressed, and the opening button 66 rotates the opening crank arm component counterclockwise, the main circuit operating shaft 22 and the proton 98 on the opening crank arm component will be separated, and the opening spring 15 will release the spring force. The first driving plate 166 component drives the first connecting rod 143 to move during the opening process, and the first connecting rod 143 drives the second connecting rod 160, the crank arm 139 and the second rotating disk 69 to rotate. At this time, the second rotating disk 69 rotates clockwise to complete the opening.

[0035] During the main circuit opening and isolating closing process, the isolation grounding operating shaft 20 rotates clockwise. The isolation grounding operating shaft 20 is a spindle, and the opening guide cylinder 165 component does not move during its rotation. During the rotation process, the isolation grounding operating shaft 20 first drives the grounding crank arm 17 to rotate clockwise. At this time, the pin connecting the third connecting rod 13 and the second driving plate 16 slides in the arc groove of the second driving plate 16, and the third connecting rod 13 does not move temporarily. The rotation of the grounding crank arm 17 drives the grounding spring 18 to rotate around the second pillar 7. The grounding spring 18 stretches during the movement. After the grounding spring 18 stretches past the midpoint, the spring force is released. The grounding spring 18 contracts and drives the isolation grounding operating shaft 20 to rotate clockwise. The isolation grounding operating shaft 20 drives the second driving plate 16, the third connecting rod 13, and the grounding transmission component 21 to move clockwise. The grounding transmission component 21 drives the transmission rod 2 at the rear of the base plate 23 to move, and the movement of the transmission rod 2 drives the fourth connecting rod 10 and the fifth connecting rod 14 to move counterclockwise, and the movement of the fifth connecting rod 14 drives the grounding shaft 6 component to move counterclockwise to complete the isolation and closing.

[0036] Returning to the main circuit opening and grounding closing process, the isolation grounding operating shaft 20 is rotated counterclockwise. The isolation grounding operating shaft 20 is the core shaft. During the rotation, the opening guide cylinder 165 component does not move. During the rotation, the isolation grounding operating shaft 20 first drives the grounding crank arm 17 counterclockwise. At this time, the pin connecting the third connecting rod 13 and the second driving plate 16 slides in the arc groove of the second driving plate 16, and the third connecting rod 13 does not move temporarily. The rotation of the grounding crank arm 17 drives the grounding spring 18 to rotate around the second pillar 7. The grounding spring 18 stretches during the movement. After the grounding spring 18 stretches past the midpoint, the spring force is released. The grounding spring 18 contracts and drives the isolation grounding operating shaft 20 to rotate counterclockwise. The isolation grounding operating shaft 20 drives the second driving plate 16, the third connecting rod 13, and the isolation grounding transmission component 21 to move clockwise. The isolated grounding transmission component 21 drives the transmission rod 2 at the rear of the base plate 23 to move, and the movement of the transmission rod 2 drives the fourth connecting rod 10 and the fifth connecting rod 14 to move clockwise, and the movement of the fifth connecting rod 14 drives the grounding shaft 6 component to move clockwise to complete the grounding closing.

[0037] The switch transmission device of the present invention includes two independent motion systems in one operating mechanism. Under the action of external force, the main circuit can realize closing and opening; the grounding circuit can realize closing and grounding, which simplifies the structure of the switch transmission device as a whole. The switch transmission device of the present invention uses the load switch transmission component to make the proton here roll in the arc groove to ensure the smooth transmission of the load switch, thereby improving the reliability of the switch.

[0038] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A switch transmission device, characterized in that: Including main circuit system and isolated ground circuit system, The main circuit system comprises a main circuit operating shaft, a closing spring assembly, an opening spring assembly and a first drive plate, wherein the main circuit operating shaft is movably mounted on the bottom plate, the closing spring assembly is mounted between the main circuit operating shaft and the first drive plate, the opening spring assembly is mounted between the first drive plate and the isolation grounding operating shaft of the isolation grounding circuit, the first drive plate is mounted on the indication shaft, and the indication shaft is movably mounted on the bottom plate; The isolated grounding loop also includes a second driving plate, which is movably mounted on the isolated grounding operating shaft, and a grounding transmission component is movably connected to the second driving plate, and the grounding transmission component is movably connected to a fifth connecting rod, which is used to connect the grounding shaft, and the isolated grounding operating shaft is fixedly connected to a grounding crank arm, and a grounding crank arm is connected to a grounding spring; The first driving plate is movably connected to a first connecting rod, the first connecting rod is movably connected to a second connecting rod, the second connecting rod is movably mounted on the first support, the second connecting rod is movably connected to a crank arm, and the crank arm is movably connected to a second rotating disk; The second driving plate is processed with an arc groove, a pin is installed in the arc groove, the pin is connected to a third connecting rod, and the third connecting rod is movably connected to the ground transmission component; A transmission rod is fixedly connected to the rotating shaft of the grounding transmission component, the transmission rod is movably connected to the fourth connecting rod, and the fourth connecting rod is movably connected to the fifth connecting rod.

2. The switch transmission device according to claim 1, characterized in that: A first rotating disk is fixedly installed on the main circuit operating shaft, a tripping crank arm component is provided on one side of the main circuit operating shaft, a proton is installed on the main shaft of the tripping crank arm component, the proton and the first rotating disk on the main circuit operating shaft are located in the same plane, and when the first rotating disk rotates, the proton can limit the first rotating disk.

3. The switch transmission device according to claim 2, characterized in that: The opening brake arm component also includes an opening brake button and a spring.

4. The switch transmission device according to claim 1, characterized in that: The closing spring assembly comprises a closing guide cylinder, on which a closing spring and a closing baffle are mounted, one end of the closing guide cylinder is movably connected to the main circuit operating shaft, and the other end is hinged to the connection point of the first drive plate.

5. The switch transmission device according to claim 1, characterized in that: The opening spring assembly includes an opening guide cylinder, on which an opening spring and an opening baffle are installed. One end of the opening guide cylinder is hinged to the first drive plate, and the other end is provided with a long groove, and the isolation grounding operating shaft is clamped inside the long groove.

6. The switch transmission device according to claim 1, characterized in that: The grounding arm drives the grounding spring to rotate to the midpoint through an angle that is not less than the angle corresponding to the arc groove.

7. The switch transmission device according to claim 1, characterized in that: The other end of the grounding spring is mounted on a second support column, and the second support column is mounted on the bottom plate.

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