Panel type disconnector earthing switch electric operating mechanism

Abstract

The present invention relates to the technical field of disconnectors, and discloses an electric operating mechanism for a panel-type disconnector and grounding switch, comprising a frame, a motor is mounted on the inner wall of the frame, a pinion shaft is mounted on the output end of the motor, a pinion is sleeved on the pinion shaft, a driving wheel shaft is movably connected to the inner wall of the frame, a large gear and a driving wheel are sleeved on the driving wheel shaft, and the small gear is meshed with the large gear. The present invention is installed on the front of the switch cabinet, and one electric mechanism can operate multiple disconnectors and grounding switches at the same time, and drive each disconnector and grounding switch in turn according to a prescribed sequence. The electric mechanism can be used for new switch cabinets, and can also be used for the modification of switch cabinets that have been put into use, without replacing the original disconnectors and grounding switches. The outer dimensions of the electric operating mechanism are similar to those of the original high-voltage switch cabinet operating mechanism, and it is very convenient to use for the modification of the switch cabinet, greatly reducing the modification cost.

Description

Technical Field

[0001] The invention relates to the technical field of disconnecting switches, in particular to an electric operating mechanism for a panel type disconnecting switch grounding switch. Background Art

[0002] With the advancement of smart grid and power distribution automation, the demand for electric disconnectors and earthing switches is increasing. Various switch accessories manufacturers are competing to develop electric disconnectors and electric earthing switches. However, most of the electric disconnectors and electric earthing switches on the market currently add motors and transmission components to the switch itself, which is only suitable for new projects. In addition, each switch needs to have an electric mechanism, which is costly. Summary of the invention

[0003] The object of the present invention is to provide an electric operating mechanism for a panel-type isolating switch grounding switch.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electric operating mechanism of a panel-type disconnector grounding switch, comprising a frame, a motor is installed on the inner wall of the frame, a pinion shaft is installed on the output end of the motor, a pinion is sleeved on the pinion shaft, a driving wheel shaft is movably connected to the inner wall of the frame, a large gear and a driving wheel are sleeved on the driving wheel shaft, an axle pin is provided at one end of the driving wheel, a roller is sleeved on the axle pin, the pinion is meshed with the large gear, a driving crank arm shaft is installed on the frame, a driving crank arm is sleeved on the driving crank arm shaft, a slide groove is provided in the driving crank arm, and the slide groove is meshed with the roller on the driving wheel.

[0005] A worm box is installed inside the frame, a worm and a worm wheel are installed inside the worm box, the worm is connected to the worm wheel through transmission, an interlocking baffle and an interlocking lever are movably installed on the outer wall of the frame through an axle pin, and a split travel switch, a combined travel switch and a cam are installed on the inner wall of the frame.

[0006] Preferably, the tail end of the worm is hexagonal.

[0007] Preferably, the number of the driving wheels is -, and the number of the driving wheels is consistent with the number of driving crank arms.

[0008] Preferably, the output crank arm is connected to a grounding switch and an isolating switch.

[0009] Preferably, the large gear and the driving wheel are all connected to the driving wheel shaft by keys.

[0010] The present invention provides an electric operating mechanism for a panel-type isolating switch grounding switch, which has the following beneficial effects:

[0011] (1) The present invention is installed on the front of the switch cabinet. One electric mechanism can operate multiple disconnectors and earthing switches at the same time, and drive each disconnector and earthing switch in turn according to the prescribed sequence. The electric mechanism can be used for new switch cabinets, and can also be used for the transformation of switch cabinets that have been put into use, without replacing the original disconnectors and earthing switches. The external dimensions of the electric operating mechanism are similar to those of the original high-voltage switch cabinet operating mechanism, which is very convenient for the transformation of the switch cabinet, greatly reducing the transformation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention;

[0013] Figure 2 It is a stereogram of the present invention.

[0014] In the figure: 1 frame, 2 worm gear box, 3 worm, 4 interlocking baffle, 5 worm wheel, 6 motor, 7 small gear, 8 large gear, 9 driving wheel, 10 driving wheel shaft, 11 driving crank arm shaft, 12 driving crank arm, 13 cam, 14 split travel switch, 15 combined travel switch, 16 interlocking lever, 17 small gear shaft. DETAILED DESCRIPTION

[0015] like Figure 1-2 As shown, the present invention provides a technical solution: an electric operating mechanism of a panel type disconnector earthing switch, comprising a frame 1, a motor 6 is installed on the inner wall of the frame 1, a pinion shaft 17 is installed on the output end of the motor 6, a pinion 7 is sleeved on the pinion shaft 17, a driving wheel shaft 10 is movably connected to the inner wall of the frame 1, a large gear 8 and a driving wheel 9 are key-connected with the driving wheel shaft 10, an axle pin is provided at one end of the driving wheel 9, a roller is sleeved on the axle pin, the pinion 7 is meshed with the large gear 8, a driving crank arm shaft 11 is installed on the frame 1, a driving crank arm 12 is sleeved on the driving crank arm shaft 11, a crank arm slide groove is provided inside the frame 1, an output crank arm is movably installed inside the crank arm slide groove, the output crank arm is connected to the earthing switch and the disconnector, the number of driving wheels 9 is 1-3, which are at 90 degrees to each other, each driving wheel 9 drives a corresponding driving crank arm 12, the number of driving wheels 9 is consistent with the number of driving crank arms 12, a slide groove is provided in the driving crank arm 12, and the slide groove is meshed with the roller on the driving wheel.

[0016] A worm box 2 is installed inside the frame 1, and a worm 3 and a worm wheel 5 are installed inside the worm box 2. The worm wheel 5 is connected to the worm 3 in driving manner. The tail end of the worm 3 is hexagonal. An interlocking baffle 4 and an interlocking lever 16 are movably installed on the outer wall of the frame 1 through an axle pin. A split travel switch 14, a combined travel switch 15 and a cam 13 are installed on the inner wall of the frame 1.

[0017] When in use, when the power is turned off for maintenance, the motor 6 rotates forward to drive the pinion shaft 17 and the pinion 7 to rotate, and the pinion 7 drives the large gear 8 and the driving wheel shaft 10 to rotate, and the driving wheel shaft 10 rotates and rotates together. There can be 1-3 driving wheels 9, which are at a 90-degree angle to each other. Each driving wheel 9 drives a corresponding driving crank arm 12. When the driving wheel shaft 10 rotates, the first driving crank arm 12 is inserted into the first output crank arm slot, driving the output crank arm to rotate. When the driving wheel rotates 90 degrees, the output crank arm rotates a certain angle, driving the corresponding disconnector to open. At this time, the driving crank arm 12 just slides out of the crank arm slot and keeps the output crank arm stationary at this position. When the driving wheel shaft 10 continues to rotate, the second driving crank arm 12 is inserted into the output crank arm slot, driving the output crank arm to rotate a certain angle. After the driving wheel 9 rotates 90 degrees, the driving crank arm 12 slides out of the crank arm slot and keeps the crank arm stationary at this position. Similarly, the output of the third output crank arm is completed in sequence. The three output arms are connected to the grounding switch and the isolating switch as required to open the isolating switch and close the grounding switch.

[0018] During the power transmission operation, when the motor 6 rotates in the reverse direction, the third driving crank arm 12 is inserted into the third output crank arm slot, driving the output crank arm to rotate. When the driving wheel rotates 90 degrees, the corresponding grounding switch is driven to open, and the driving crank arm 12 just slides out of the crank arm slot and keeps the crank arm stationary at this position. Then, each 90-degree rotation makes the second and first output crank arms rotate a certain angle in turn, and the grounding switch is closed and the disconnector is opened in sequence. The number of output crank arms can be adjusted according to actual needs. If the high-voltage switch cabinet has only one grounding switch or one disconnector, only one output crank arm and one driving wheel 9 are required.

[0019] The travel switch is composed of a separate travel switch 14 and a close travel switch 15, and can be composed of multiple groups of contacts in parallel. The separate travel switch 14 is used to indicate that the disconnecting switch and the earthing switch are in place (power outage for maintenance) and the motor is powered off. The close travel switch 15 is used to indicate that the grounding switch and the disconnecting switch are in place (power supply operation) and the motor is powered off. The cam 13 is used to close the travel switch 15 when the separate travel switch 14 is in place for power outage for maintenance and the power supply operation is in place, so that the travel switch contacts are disconnected and the motor 6 stops.

[0020] The worm box 2, the worm 3 and the worm wheel 5 form a manual operating mechanism. The tail end of the worm 3 is hexagonal and can be connected with an operating handle for manual operating mechanism operation.

[0021] The interlocking baffle 4 and the interlocking lever 16 are used for interlocking with the circuit breaker. The interlocking lever 16 is sleeved on the shaft pin, which is fixed on the frame 1. The interlocking baffle 4 is also fixed on the frame 1 through the shaft pin. The interlocking baffle 4 can slide up and down. When the circuit breaker is closed, the front end of the interlocking lever 16 is pulled down, and the rear end of the interlocking lever 16 blocks the interlocking baffle 4 upward, so that the baffle cannot slide down, the handle cannot be inserted, and manual operation is impossible. After the circuit breaker is opened, the interlocking baffle 4 can slide downward and press the front end of the interlocking lever 16. The rear end of the interlocking lever 16 is upward, and the circuit breaker opening trip plate is pulled to open the circuit breaker. At this time, the handle can be inserted, and the mechanism can be manually operated through the worm and worm gear.

[0022] In summary, the present invention is installed on the front of the switch cabinet, and one electric mechanism can operate multiple disconnectors and grounding switches at the same time, and drive each disconnector and grounding switch in turn according to the specified order. The electric mechanism can be used for new switch cabinets, and can also be used for the transformation of switch cabinets that have been put into use, without replacing the original disconnectors and grounding switches. The external dimensions of the electric operating mechanism are similar to those of the original high-voltage switch cabinet operating mechanism, and it is very convenient to use it for the transformation of the switch cabinet, greatly reducing the transformation cost.

Claims

1. A panel type disconnector earthing switch electric operating mechanism, comprising a frame (1), Features: The inner wall of the frame (1) is mounted with a motor (6), the output end of the motor (6) is mounted with a pinion shaft (17), the pinion shaft (17) is sleeved with a pinion gear (7), the inner wall of the frame (1) is movably connected with a driving wheel shaft (10), the driving wheel shaft (10) is sleeved with a large gear (8) and a driving wheel (9), one end of the driving wheel (9) is provided with an axle pin, the axle pin is sleeved with a roller, the pinion gear (7) meshes with the large gear (8), the frame (1) is mounted with a driving crank arm shaft (11), the driving crank arm shaft (11) is sleeved with a driving crank arm (12), a slide groove is arranged in the driving crank arm (12), and the slide groove meshes with the roller on the driving wheel; A worm box (2) is installed inside the frame (1), a worm (3) and a worm wheel (5) are installed inside the worm box (2), the worm wheel (5) is drivingly connected to the worm (3), and an interlocking baffle (4) and an interlocking lever (16) are movably installed on the outer wall of the frame (1) via an axle pin; wherein the worm box (2), the worm (3), and the worm wheel (5) form a manual operating mechanism, the worm (3) is sleeved with an operating handle, and the interlocking baffle (4) and the interlocking lever (16) are used to communicate with the circuit breaker. The interlocking lever (16) is sleeved on the shaft pin; the interlocking baffle (4) can slide up and down. When the circuit breaker is closed, the front end of the interlocking lever (16) is pulled downward, and the rear end of the interlocking lever (16) blocks the interlocking baffle (4) upward, so that the interlocking baffle cannot slide downward and the operating handle cannot be inserted; after the circuit breaker is opened, the interlocking baffle (4) can slide downward and press the front end of the interlocking lever (16), and the rear end of the interlocking lever (16) is upward, so that the circuit breaker is opened and the operating handle can be inserted; The inner wall of the frame (1) is mounted with a travel switch (14), a travel switch (15) and a cam (13); the driving arm is connected to the grounding switch and the isolating switch; the large gear (8) and the driving wheel (9) are connected to the driving wheel shaft (10) by a key; The travel switch (14) is used to indicate when the isolating switch is opened and the earthing switch is closed, and to cut off the power to the motor; the travel switch (15) is used to indicate when the isolating switch is opened and the earthing switch is closed, and to cut off the power to the motor; the cam (13) is used to press the travel switch (14) when the power is cut off for maintenance, and to press the travel switch (15) when the power supply operation is in place, so that the travel switch contacts are disconnected and the motor (6) stops; The frame (1) is provided with a crank arm slide groove inside, and a driving crank arm is movably installed inside the crank arm slide groove. The number of driving wheels (9) is 1-3, and they are at 90 degrees to each other. Each driving wheel (9) drives a corresponding driving crank arm (12); When the driving wheel (9) rotates 90 degrees, the corresponding earthing switch is driven to open, and the first driving crank arm (12) just slides out of the crank arm slot and keeps the driving crank arm stationary at this position; then, the driving wheel (9) rotates 90 degrees each time to make the next driving crank arm rotate a certain angle in turn, so that the earthing switch is closed and the isolating switch is opened in sequence.

2. The panel type disconnector earthing switch electric operating mechanism according to claim 1, Features: The tail end of the worm (3) is hexagonal.

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