A ring main unit containing a disconnector motor

Abstract

The application discloses a ring net cabinet containing a disconnecting switch motor and relates to the technical field of ring net cabinets.The ring net cabinet contains a ring net cabinet main body, the inner wall of the ring net cabinet main body is fixed with a driving shell, one side of the driving shell is fixed with an electric telescopic device, one side of the ring net cabinet main body is fixed with a motor starting module used for driving the electric telescopic device to operate, the output end of the electric telescopic device penetrates and is slidingly installed at the left side of the driving shell, and the output end of the electric telescopic device is fixed with a U-shaped convex rod frame.The setting of the knife switch buffer device makes the elastic plate buffer the impact force of the downward swing of the knife switch main body, thereby avoiding the problem that the impact force is too large when the knife switch main body is closed, and the contact of the disconnecting switch main body is damaged; meanwhile, the elastic plate is deformed downward by the pressure of the knife switch main body, and the drum capsule is driven by the sliding plate to abut against the top surface of the knife switch main body, thereby improving the stability of the contact between the knife switch main body and the disconnecting switch main body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ring main unit, in particular to a ring main unit containing isolating switch motor. BACKGROUND

[0002] The ring main unit is often used in power distribution station of load center such as factory enterprise, in order to ensure the safety of maintenance personnel and equipment, the isolating switch cooperating with the circuit breaker is generally arranged in the ring main unit, and the isolating switch is generally realized by motor to realize closing or opening operation

[0003] The patent with the patent announcement number CN208767176U discloses an environment-friendly ring main unit isolating switch motor, which is compact in structure, convenient to operate, and can realize electric operation of the isolating switch and the grounding knife on the same mechanism, so that the isolating switch can be electrically operated when operating the ring main unit isolating switch, and the embarrassment that the grounding knife can only be manually operated is avoided, which is safer and more labor-saving for the operator.

[0004] Although the above-mentioned patent can make the isolating switch have electric operation when operating the ring main unit isolating switch, when the isolating switch is driven by the motor and is in the closing state, the impact force of the knife switch main body is too large when closing, which can cause damage to the isolating switch main contact, and further cause damage to the isolating switch, therefore, the present application provides a ring main unit containing isolating switch motor. SUMMARY

[0005] In view of the defects of the prior art, the present application provides a ring main unit containing isolating switch motor, which solves the problem that the isolating switch is always in the closing state under the action of the motor in the ring main unit fire environment, and the ring main unit equipment is in the power-on state, if the isolating switch is not opened in time, a greater safety accident will be caused.

[0006] In order to achieve the above object, the application is implemented by the following technical scheme: a ring network cabinet containing a disconnecting switch motor, comprising a ring network cabinet main body, a drive shell is fixed on the inner wall of the ring network cabinet main body, an electric telescopic device is fixed on one side of the drive shell, a motor starting module for driving the electric telescopic device to operate is fixed on one side of the ring network cabinet main body, the output end of the electric telescopic device penetrates and is slidingly installed on the left side of the drive shell, a U-shaped convex rod holder is fixed on the output end of the electric telescopic device, a disconnecting switch main body is fixed on the top of the drive shell, a knife switch main body is movably installed on the top of the disconnecting switch main body, a thermal drive module is arranged above the U-shaped convex rod holder, the thermal drive module comprises a sleeve shell plate, a gas cavity and a plug plate, the sleeve shell plate is sleeved and fixed at the top end of the U-shaped convex rod holder, the gas cavity is fixed on the right side of the sleeve shell plate, the plug plate is slidingly installed in the gas cavity, the plug plate and the sleeve shell plate are elastically connected through a spring, and a U-shaped rod is penetratingly and slidingly installed on the top of the sleeve shell plate.

[0007] Preferably, a knife switch buffer device is arranged on the top right side of the drive shell, the knife switch buffer device comprises a groove shell, the groove shell is fixed on the top right side of the drive shell, a plurality of grooves are formed in the top of the groove shell, sliding plates are slidingly installed on the inner wall of the front surface and the back surface of the corresponding grooves of the groove shell and the knife switch main body, the sliding plates on the front surface and the back surface are elastically connected through elastic plates, the elastic plates can buffer the impact force of the downward swing of the knife switch main body, thereby avoiding the problem that the impact force is too large when the knife switch main body is closed, resulting in damage to the contact of the disconnecting switch main body, fixed magnetic blocks are fixed on the bottom of the elastic plates, drum sacs are fixed on the top of the sliding plates on the opposite sides of the front surface and the back surface, and the drum sacs are connected through a hose, the thickness of the inner wall of the drum sac on the upper half is greater than that of the inner wall of the drum sac on the lower half, the elastic plate is deformed downward under the pressure of the knife switch main body, the elastic plate drives the sliding plate to move to the center of the groove of the groove shell, and the sliding plate drives the drum sac to abut against the top surface of the knife switch main body, thereby improving the stability of the contact between the knife switch main body and the disconnecting switch main body.

[0008] Preferably, the bottom of the recessed shell is provided with a knife shutter back-falling prevention device, the knife shutter back-falling prevention device comprises a cavity shell, the cavity shell is embedded in the bottom of the recessed shell, the internal space of the cavity shell is connected with the drum bag through a hose, a push plate is slidably installed in the internal space of the cavity shell, the push plate and the inner wall of the cavity shell are elastically connected through a spring, a J-shaped rod is fixed to the side of the push plate away from the cavity shell, the J-shaped rod extends to the plug plate, and a gap of five centimeters is left between the end of the J-shaped rod away from the cavity shell and the plug plate, the J-shaped rod drives the push plate to move and enters the gas in the drum bag into the cavity shell, because the wall thickness of the upper half of the drum bag is greater than that of the lower half, the lower half of the drum bag is preferentially deformed to form a concave shape, so that the contact surface wall between the drum bag and the top surface of the knife shutter body is reduced, thereby reducing the friction between the drum bag and the knife shutter body, and ensuring that the knife shutter body can realize the opening and closing movement; at the same time, the upper half of the drum bag does not deform, so that the upper half of the drum bag supports or blocks the knife shutter body, thereby avoiding the problem that the knife shutter body falls back to the contact of the disconnecting switch body.

[0009] Preferably, the outer side of the knife shutter body is provided with a knife shutter rust removal device, the knife shutter rust removal device comprises a U-shaped sliding rod, the U-shaped sliding rod is slidably installed at the top of the knife shutter body, a sliding magnetic block is fixed to the right side of the U-shaped sliding rod, the sliding magnetic block and the top of the knife shutter body are elastically connected through a spring, a U-shaped polishing block is fixed to the top of the U-shaped sliding rod, the U-shaped rod drives the U-shaped polishing block to move on the outer side of the knife shutter body by pushing the U-shaped sliding rod, so that the U-shaped polishing block polishes the part of the knife shutter body in contact with the contact of the disconnecting switch body, thereby reducing the frequency of worker maintenance of the knife shutter body.

[0010] Preferably, the spring has two protruding parts, the protruding parts of the two springs are oppositely arranged, and an elastic air jet bag is arranged between the two springs, the nozzle of the elastic air jet bag is arranged in a direction facing the disconnecting switch body, the elastic air jet bag is extruded by the spring, the nozzle of the elastic air jet bag blows air towards the contact of the disconnecting switch body, so that the dust and rust attached to the contact of the disconnecting switch body is separated from the contact of the disconnecting switch body, the sliding magnetic block and the fixed magnetic block are attracted to each other, under the magnetic force of the sliding magnetic block and the fixed magnetic block, the sliding magnetic block is attracted to the fixed magnetic block, the fixed magnetic block has a tendency to move upwards, thereby improving the buffering effect of the elastic plate on the knife shutter body, and when the knife shutter body contacts the elastic plate, the sliding magnetic block is attracted to the fixed magnetic block, thereby further improving the stability of the contact between the knife shutter body and the contact of the disconnecting switch body.

[0011] The application provides a ring network cabinet containing a disconnecting switch motor.

[0012] (1), the impact force of the knife switch main body downward swing is buffered by the setting of the knife switch buffer device, thereby avoiding the problem that the impact force is too large when the knife switch main body is closed, and the contact of the disconnecting switch main body is damaged; meanwhile, the knife switch main body deforms the elastic plate downward and drives the drum capsule to contact the top surface of the knife switch main body through the sliding plate, thereby improving the stability of the contact between the knife switch main body and the contact of the disconnecting switch main body.

[0013] (2), the setting of the anti-knife switch falling device makes the J-shaped rod drive the push plate to move and the gas in the drum capsule into the cavity shell, because the wall thickness of the upper half of the drum capsule is greater than that of the lower half, the lower half of the drum capsule deforms preferentially, thereby reducing the contact surface wall between the drum capsule and the top surface of the knife switch main body, thereby reducing the friction between the drum capsule and the knife switch main body, thereby ensuring that the knife switch main body can realize the opening movement; meanwhile, the upper half of the drum capsule does not deform, thereby supporting or blocking the knife switch main body, thereby avoiding the problem that the knife switch main body falls to the contact of the disconnecting switch main body.

[0014] (3), the setting of the knife switch rust removal device makes the U-shaped rod drive the U-shaped polishing block to polish the part of the contact between the knife switch main body and the disconnecting switch main body through the U-shaped sliding rod, thereby reducing the frequency of worker maintenance of the knife switch main body; meanwhile, the elastic sheet extrudes the elastic air jet capsule, and the nozzle of the elastic air jet capsule blows air towards the contact of the disconnecting switch main body, thereby making the dust and rust adhered to the contact of the disconnecting switch main body separate from the contact of the disconnecting switch main body.

[0015] (4), the setting of the sliding magnetic block and the fixed magnetic block makes the sliding magnetic block attract the fixed magnetic block under the magnetic force of the sliding magnetic block and the fixed magnetic block, the fixed magnetic block drives the elastic plate to have a tendency to move upward, thereby improving the buffering effect of the elastic plate on the knife switch main body, and when the knife switch main body contacts the elastic plate, the sliding magnetic block attracts the fixed magnetic block, thereby further improving the stability of the contact between the knife switch main body and the contact of the disconnecting switch main body. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the whole of the present application;

[0017] Figure 2 It is a partial cross-sectional schematic diagram of the whole of the present application;

[0018] Figure 3 It is a partial structure schematic diagram of the disconnecting switch main body of the present application;

[0019] Figure 4 It is a schematic diagram of the heat-driven module of the present application;

[0020] Figure 5 It is a schematic diagram of the knife switch buffer device of the present application;

[0021] Figure 6 It is the schematic view of the invention's knife switch anti-falling device.

[0022] Figure 7 It is the schematic view of the invention's knife switch rust removal device.

[0023] In the figure: 1, ring network cabinet main body; 2, motor starting module; 3, drive shell; 4, disconnecting switch main body; 41, knife switch main body; 5, electric telescopic device; 51, U-shaped convex rod holder; 6, thermal drive module; 61, sleeve shell plate; 62, gas cavity; 63, plug plate; 64, heat conducting frame; 65, U-shaped rod; 66, connecting rod; 7, knife switch buffer device; 71, groove shell; 72, sliding plate; 73, fixed magnetic block; 74, elastic plate; 75, drum bag; 8, knife switch rust removal device; 81, U-shaped sliding rod; 82, U-shaped polishing block; 83, elastic sheet; 84, sliding magnetic block; 85, elastic air jet bag; 9, knife switch anti-falling device; 91, cavity shell; 92, push plate; 93, J-shaped rod. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all.

[0025] Please refer to Figures 1-7 The present application provides a kind of technical solutions: a ring network cabinet containing disconnecting switch motor, including ring network cabinet main body 1, disconnecting switch main body 4 is fixed on the inner wall of ring network cabinet main body 1, disconnecting switch main body 4 is fixed on the top of drive shell 3, the top of disconnecting switch main body 4 is movably installed with knife switch main body 41, the top of U-shaped convex rod holder 51 is provided with thermal drive module 6, thermal drive module 6 includes sleeve shell plate 61, gas cavity 62 and plug plate 63, sleeve shell plate 61 is sleeved and fixed at the top of U-shaped convex rod holder 51, the right side of sleeve shell plate 61 is fixed with gas cavity 62, plug plate 63 is slidably installed in gas cavity 62, plug plate 63 and sleeve shell plate 61 are elastically connected by spring, the top of sleeve shell plate 61 is penetrated and slidably installed with U-shaped rod 65, the top of U-shaped rod 65 is slidably installed at the top of knife switch main body 41, and the bottom of U-shaped rod 65 is movably connected with plug plate 63 by connecting rod 66.

[0026] The top right side of the driving shell 3 is provided with a knife switch buffer device 7, which comprises a groove shell 71 fixed on the top right side of the driving shell 3, a plurality of grooves are opened at the top of the groove shell 71, the inner walls of the front and back corresponding grooves of the groove shell 71 are slidably installed with sliding plates 72, the front and back sliding plates 72 are elastically connected by elastic plates 74, the elastic plates 74 are provided in a downward bulge, the elastic plates 74 can buffer the impact force of the downward swing of the knife switch main body 41, thereby avoiding the problem that the impact force is too large when the knife switch main body 41 is closed, causing the contact of the disconnecting switch main body 4 to be damaged, the bottom of the elastic plate 74 is fixed with a fixed magnetic block 73, the top of the front and back sliding plates 72 is fixed with a drum sac 75 on the opposite side, and the drum sacs 75 are connected through a soft tube, the inner wall of the drum sac 75 is thicker in the upper half than in the lower half, the elastic plate 74 is deformed downward by the knife switch main body 41, the elastic plate 74 drives the sliding plate 72 to move to the center of the groove of the groove shell 71, and the sliding plate 72 drives the drum sac 75 to abut against the top surface of the knife switch main body 41, thereby improving the stability of the contact between the knife switch main body 41 and the contact of the disconnecting switch main body 4.

[0027] The bottom of the groove shell 71 is provided with a knife switch back-falling prevention device 9, which comprises a cavity shell 91 embedded in the bottom of the groove shell 71, the internal space of the cavity shell 91 is connected through a soft tube with the drum sac 75, and the inside of the cavity shell 91 is slidably installed with a push plate 92, the push plate 92 and the inner wall of the cavity shell 91 are elastically connected by a spring, the side of the push plate 92 away from the cavity shell 91 is fixed with a J-shaped rod 93, the J-shaped rod 93 extends to the plug plate 63, and a gap of five centimeters is left between the end of the J-shaped rod 93 away from the cavity shell 91 and the plug plate 63, the J-shaped rod 93 drives the push plate 92 to move and enters the gas in the drum sac 75 into the cavity shell 91, because the wall thickness of the upper half of the drum sac 75 is greater than that of the lower half, the lower half of the drum sac 75 deforms preferentially, thereby reducing the contact surface between the drum sac 75 and the top surface of the knife switch main body 41, thereby reducing the friction between the drum sac 75 and the knife switch main body 41, thereby ensuring that the knife switch main body 41 can realize the opening and closing movement; at the same time, the upper half of the drum sac 75 does not deform, thereby supporting or blocking the knife switch main body 41, thereby avoiding the problem that the knife switch main body 41 falls back to the contact of the disconnecting switch main body 4.

[0028] The outer side of the knife switch main body 41 is provided with a knife switch rust removal device 8, the knife switch rust removal device 8 comprises a U-shaped sliding rod 81, the U-shaped sliding rod 81 is slidingly installed at the top of the knife switch main body 41, the right side of the U-shaped sliding rod 81 is fixedly connected with a sliding magnetic block 84, the sliding magnetic block 84 and the top of the knife switch main body 41 are elastically connected through elastic sheets 83, the top of the U-shaped sliding rod 81 is fixedly connected with a U-shaped polishing block 82, the U-shaped rod 65 drives the U-shaped polishing block 82 to move on the outer side of the knife switch main body 41 by pushing the U-shaped sliding rod 81, so that the U-shaped polishing block 82 polishes the part of the knife switch main body 41 in contact with the contact of the disconnecting switch main body 4, thereby reducing the frequency of the worker's maintenance of the knife switch main body 41, the two elastic sheets 83 are oppositely arranged, the elastic sheets 83 are connected through an elastic air jet bag 85, the nozzle of the elastic air jet bag 85 is arranged in the direction of the disconnecting switch main body 4, the elastic sheets 83 extrude the elastic air jet bag 85, the nozzle of the elastic air jet bag 85 blows air to the contact of the disconnecting switch main body 4, so that the dust and rust adhered to the contact of the disconnecting switch main body 4 is separated from the contact of the disconnecting switch main body 4, the sliding magnetic block 84 and the fixed magnetic block 73 are attracted to each other, under the magnetic force of the sliding magnetic block 84 and the fixed magnetic block 73, the sliding magnetic block 84 attracts the fixed magnetic block 73, the fixed magnetic block 73 drives the elastic plate 74 to move upward, thereby improving the buffering effect of the elastic plate 74 on the knife switch main body 41, and when the knife switch main body 41 contacts the elastic plate 74, the sliding magnetic block 84 attracts the fixed magnetic block 73, thereby further improving the stability of the contact of the knife switch main body 41 and the disconnecting switch main body 4.

[0029] In use, the ring main unit main body 1 drives the electric telescopic device 5 to move by the motor starting module 2 to drive the U-shaped convex rod frame 51 to move, so that the U-shaped convex rod frame 51 drives the U-shaped rod 65 to move synchronously, the U-shaped rod 65 drives the knife switch main body 41 to swing downward by abutting against the top surface of the knife switch main body 41, so that the knife switch main body 41 makes the disconnecting switch main body 4 in the closed state, when the ring main unit main body 1 is in a fire environment, the temperature around the ring main unit main body 1 rises, the liquid in the gas cavity 62 is heated and expanded to drive the plug plate 63 to move away from the gas cavity 62, the plug plate 63 drives the U-shaped rod 65 to move upward by driving the connecting rod 66, so that the stroke of the U-shaped rod 65 in the vertical direction increases, the U-shaped rod 65 drives the knife switch main body 41 to swing upward by abutting against the top surface of the knife switch main body 41.

[0030] In each time the knife switch main body 41 swings down to close, the knife switch main body 41 will first contact the elastic plate 74, and the elastic plate 74 will buffer the impact force of the downward swing of the knife switch main body 41, thereby avoiding the problem that the impact force is too large when the knife switch main body 41 closes, causing the contact of the disconnecting switch main body 4 to be damaged; at the same time, the knife switch main body 41 deforms the elastic plate 74 downward, and the two ends of the elastic plate 74 will drive the front and back sliding plates 72 to move to the center of the groove of the groove shell 71, and the sliding plate 72 drives the drum capsule 75 to move synchronously, so that the drum capsule 75 abuts against the top surface of the knife switch main body 41, thereby improving the stability of the contact between the knife switch main body 41 and the contact of the disconnecting switch main body 4.

[0031] At the same time, when the plug plate 63 moves away from the gas cavity 62, after the plug plate 63 moves a certain distance, the plug plate 63 will push the J-shaped rod 93 to move synchronously, the J-shaped rod 93 drives the push plate 92 to move and suck the air in the cavity shell 91, under the transmission of the hose, the gas in the drum capsule 75 enters the cavity shell 91, because the wall thickness of the upper half of the drum capsule 75 is greater than that of the lower half, the lower half of the drum capsule 75 deforms preferentially, thereby reducing the abutting surface wall between the drum capsule 75 and the top surface of the knife switch main body 41, thereby reducing the friction between the drum capsule 75 and the knife switch main body 41, thereby ensuring that the knife switch main body 41 can realize the opening movement; at the same time, the upper half of the drum capsule 75 does not deform, thereby supporting or blocking the knife switch main body 41, thereby avoiding the problem that the knife switch main body 41 falls back to the contact of the disconnecting switch main body 4.

[0032] When the U-shaped rod 65 abuts against the knife switch main body 41, the U-shaped rod 65 drives the U-shaped sliding rod 81 to move the U-shaped polishing block 82 outside the knife switch main body 41, thereby making the U-shaped polishing block 82 polish the part of the knife switch main body 41 that contacts the contact of the disconnecting switch main body 4, thereby reducing the frequency of worker maintenance of the knife switch main body 41, at the same time, the spring sheet 83 is stretched, the spring sheet 83 extrudes the elastic jet capsule 85, and the nozzle of the elastic jet capsule 85 blows air toward the contact of the disconnecting switch main body 4, thereby making the dust and rust attached to the contact of the disconnecting switch main body 4 separate from the contact of the disconnecting switch main body 4; in each time the knife switch main body 41 closes, under the magnetic force of the sliding magnetic block 84 and the fixed magnetic block 73, the sliding magnetic block 84 attracts the fixed magnetic block 73, the fixed magnetic block 73 drives the elastic plate 74 to have a tendency to move upward, thereby improving the buffering effect of the elastic plate 74 on the knife switch main body 41, at the same time, when the knife switch main body 41 contacts the elastic plate 74, the sliding magnetic block 84 attracts the fixed magnetic block 73, further improving the stability of the contact between the knife switch main body 41 and the contact of the disconnecting switch main body 4.

[0033] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A ring main unit containing a disconnector motor, comprising a ring main unit body (1), wherein a drive housing (3) is fixed on the inner wall of the ring main unit body (1), an electric telescopic device (5) is fixed on one side of the drive housing (3), the output end of the electric telescopic device (5) is slidably mounted through and on the left side of the drive housing (3), a disconnector body (4) is fixed on the top of the drive housing (3), a knife switch body (41) is movably mounted on the top of the disconnector body (4), and a motor starting module (2) for driving the electric telescopic device (5) is fixed on one side of the ring main unit body (1), characterized in that: The output end of the electric telescopic device (5) is fixed with a U-shaped protruding rod frame (51). A thermal drive module (6) is provided above the U-shaped protruding rod frame (51). The thermal drive module (6) includes a shell plate (61), a gas chamber (62), and a plug plate (63). A knife switch buffer device (7) is provided on the top right side of the drive shell (3). The knife switch buffer device (7) includes a groove shell (71). The groove shell (71) is fixed on the top right side of the drive shell (3). Multiple grooves are provided on the top of the groove shell (71). Slide plates (72) are slidably installed on the bottom front and back of the groove corresponding to the groove of the groove shell (71) and the knife switch body (41). The slide plates (72) on the front and back are elastically connected by a spring plate (74). The spring plate (74) will buffer the impact force of the knife switch body (41) swinging downward. A fixed magnet (73) is fixed at the bottom of the spring plate (74). The casing plate (61) is sleeved and fixed to the top of the U-shaped convex rod frame (51). A gas chamber (62) is fixed to the right side of the casing plate (61). A plug plate (63) is slidably installed inside the gas chamber (62). The plug plate (63) and the casing plate (61) are elastically connected by a spring. A U-shaped rod (65) is slidably installed through the top of the casing plate (61). The top of the U-shaped rod (65) is slidably installed on the top of the knife switch body (41). The movement of the U-shaped rod (65) will cause the knife switch body (41) to swing up or down. The bottom of the U-shaped rod (65) is movably connected to the plug plate (63) through a connecting rod (66). The liquid inside the gas chamber (62) is heated, evaporates, expands, and pushes the plug plate (63) to move away from the gas chamber (62). The plug plate (63) pushes the connecting rod (66) to drive the U-shaped rod (65) to move upward, causing the knife switch body (41) to swing upward.

2. A ring main unit containing a disconnector switch motor according to claim 1, characterized in that: Both the front and back sides of the slide plate (72) have bulges (75) fixed on opposite sides of the top, and the bulges (75) are connected by a flexible tube. The thickness of the upper half of the inner wall of the bulge (75) is greater than the thickness of the lower half of the inner wall of the bulge (75).

3. A ring main unit containing a disconnector switch motor according to claim 1, characterized in that: The bottom of the groove shell (71) is provided with an anti-knife gate fall-back device (9). The anti-knife gate fall-back device (9) includes a cavity shell (91). The cavity shell (91) is embedded in the bottom of the groove shell (71). A push plate (92) is slidably installed inside the cavity shell (91). The push plate (92) and the inner wall of the cavity shell (91) are elastically connected by a spring. A J-shaped rod (93) is fixed on the side of the push plate (92) away from the cavity shell (91). The J-shaped rod (93) extends to the stop plate (63), and there is a five-centimeter gap between the end of the J-shaped rod (93) away from the cavity shell (91) and the stop plate (63).

4. A ring main unit containing a disconnector switch motor according to claim 3, characterized in that: The internal space of the hollow shell (91) is connected to the bulge (75) through a flexible tube.

5. A ring main unit containing a disconnector switch motor according to claim 1, characterized in that: A rust removal device (8) is provided on the outside of the knife switch body (41). The rust removal device (8) includes a U-shaped slide rod (81). The U-shaped slide rod (81) is slidably installed on the top of the knife switch body (41). A sliding magnetic block (84) is fixed on the right side of the U-shaped slide rod (81). The sliding magnetic block (84) is elastically connected to the top of the knife switch body (41) through a spring piece (83). A U-shaped grinding block (82) is fixed on the top of the U-shaped slide rod (81).

6. A ring main unit containing a disconnector switch motor according to claim 5, characterized in that: There are two spring pieces (83), and the raised parts of the two spring pieces (83) are arranged facing each other. The two spring pieces (83) are connected by an elastic air bladder (85). The nozzle of the elastic air bladder (85) is arranged in the direction of the isolating switch body (4). The sliding magnetic block (84) and the fixed magnetic block (73) attract each other.

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