Anti-creeping grounding device of switch cabinet

Abstract

The utility model provides an anti-creeping grounding device of a switch cabinet, which comprises an isolating switch and a grounding assembly, and the isolating switch is provided with an isolating baffle plate; the grounding assembly comprises a grounding rod and a grounding contact; a movable groove is formed in the grounding contact, a non-return plate is hinged to the grounding contact, the non-return plate is located in the movable groove, and one end of the non-return plate abuts against one side of the movable groove; one end of the grounding rod is fixedly connected with the isolation baffle, and the other end of the grounding rod extends into the movable groove and is lapped on the non-return plate. According to the anti-creeping grounding device of the switch cabinet, a traditional operation mechanism of an isolation switch and a grounding knife-switch is simplified, the grounding knife-switch is closed by directly utilizing the movement of the isolation baffle in the disconnecting process, and the problem of large torque caused by secondary transmission through a connecting rod and an auxiliary rotating shaft in a traditional design is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-leakage grounding, in particular to an anti-leakage grounding device for a switch cabinet. Background Art

[0002] The grounding switch is usually interlocked with other operating mechanisms in the switch cabinet, such as the disconnector. This means that the grounding switch can only be closed when the disconnector is in the open state. This design ensures that the grounding switch cannot be closed when the equipment is energized, thus preventing misoperation. When the equipment needs to be repaired, the operator will first disconnect the circuit breaker and disconnector, and then close the grounding switch. In this way, even if the equipment is accidentally energized, the grounding switch can provide a safe grounding path to guide the current to the ground, thereby protecting the maintenance personnel from electric shock.

[0003] At present, for the leakage prevention grounding device of the isolating switch in the indoor switch cabinet, when the isolating switch needs to be disconnected, the main shaft on the rotating bracket is driven to rotate the insulator. The insulator causes the isolation baffle to rotate and flip up to disconnect, thereby realizing the disconnected state of the isolating switch. In order to achieve grounding, the main shaft will be linked to the secondary shaft through a connecting rod. The rotation of the secondary shaft causes the grounding knife to flip up horizontally and contact with the static contact, thereby completing the grounding operation.

[0004] However, the design of the main shaft and the auxiliary shaft may require a large torque to achieve rotation, which may cause the operator to feel strenuous when performing grounding or disconnecting operations, resulting in an additional burden on the operator in actual operations. Based on the above, the present application proposes a switch cabinet leakage protection grounding device to solve the above problem. Utility Model Content

[0005] The utility model provides a switch cabinet anti-leakage grounding device, which solves the problems mentioned in the above background technology.

[0006] The technical solution of the utility model is achieved in this way:

[0007] A switch cabinet leakage prevention grounding device comprises an isolating switch and a grounding assembly, wherein the isolating switch is provided with an isolating baffle; the grounding assembly comprises a grounding rod and a grounding contact; a movable groove is provided in the grounding contact, and a non-return plate is hinged on the grounding contact and is located in the movable groove and one end of the non-return plate abuts against one side of the movable groove; one end of the grounding rod is connected and fixed to the isolating baffle, and the other end extends into the movable groove and is placed on the non-return plate.

[0008] Furthermore, the side of the movable groove abutting against the anti-return plate is an arc surface.

[0009] Furthermore, a protrusion is provided on the grounding contact, and the protrusion is located at the bottom of the abutting end of the anti-return plate.

[0010] Furthermore, an adapting groove is provided on the anti-return plate, and the adapting groove is adapted to the grounding rod placed on one end of the anti-return plate.

[0011] Furthermore, the grounding assembly also includes a grounding switch arranged on a side of the grounding contact away from the grounding rod.

[0012] Furthermore, the isolating switch includes a bracket, and a first insulator and a second insulator are respectively provided on both sides of the top of the bracket, and a first static contact and a second static contact are respectively provided on the top of the first insulator and the second insulator, wherein one end of the isolation baffle is hinged to the second static contact.

[0013] Furthermore, a rotating shaft is rotatably arranged on the bracket, a transmission sheet is arranged outside the rotating shaft, and a third insulator is hingedly connected to the transmission sheet with one end hingedly connected to the isolation baffle.

[0014] Beneficial effects of the technical solution provided by this application:

[0015] The switch cabinet anti-leakage grounding device simplifies the operating mechanism of the traditional disconnector and the grounding switch, and realizes the closing of the grounding switch by directly utilizing the movement of the isolation baffle during the disconnection process, avoiding the problem of large torque caused by secondary transmission through the connecting rod and the auxiliary shaft in the traditional design. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the leakage protection grounding device for the switch cabinet of the utility model;

[0018] Figure 2 This is a schematic diagram of the explosion of the leakage-proof grounding device of the switch cabinet of the utility model;

[0019] Figure 3 It is a partially enlarged schematic diagram of the grounding contact of the utility model.

[0020] In the figure: 100 isolating switch, 110 bracket, 120 first insulator, 121 first static contact, 130 second insulator, 131 second static contact, 132 isolating baffle, 140 rotating shaft, 141 transmission sheet, 150 third insulator;

[0021] 200 grounding assembly, 210 grounding rod, 220 grounding contact, 221 movable slot, 222 check plate, 222a adapter slot, 223 protrusion, 230 grounding knife switch. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1-3 A switch cabinet leakage prevention grounding device comprises an isolating switch 100 and a grounding assembly 200, wherein the isolating switch 100 is provided with an isolating baffle 132; the grounding assembly 200 comprises a grounding rod 210 and a grounding contact 220; a movable groove 221 is provided in the grounding contact 220, and a non-return plate 222 is hingedly connected to the grounding contact 220 and is located in the movable groove 221 and one end of the non-return plate 222 abuts against one side of the movable groove 221; one end of the grounding rod 210 is connected and fixed to the isolating baffle 132, and the other end extends into the movable groove 221 and is placed on the non-return plate 222.

[0024] By directly connecting the isolation baffle 132 to the grounding rod 210, the operation process is simplified and the complex mechanical structures such as connecting rods and auxiliary shafts required in the traditional design are reduced. Since the movement of the isolation baffle 132 directly drives the grounding rod 210, the intermediate transmission link is reduced, thereby reducing the torque required during operation, making the operation easier.

[0025] When the isolation baffle 132 moves, the grounding rod 210 moves accordingly. One end of the grounding rod 210 slides from the bottom of the movable groove 221 into the movable groove 221. During this process, the end of the grounding rod 210 pushes the check plate 22 to flip until the gap after flipping is enough to separate the end of the grounding rod 210 from the check plate 222. Then, the check plate 222 rotates in the opposite direction due to gravity and abuts against one side of the movable groove 221 again to complete the grounding closure.

[0026] In some embodiments, a protrusion 223 is disposed on the ground contact 220 , and the protrusion 223 is located at the bottom of the abutting end of the anti-return plate 222 .

[0027] The contact between the protrusion 223 and the anti-return plate 222 can provide additional support and enhance the contact stability between the grounding rod 210 and the anti-return plate 222. This stability is necessary to ensure that the grounding rod 210 can reliably contact the grounding contact 220 when it is closed. The anti-return plate 222 is generally designed to provide a physical barrier to prevent the grounding rod 210 from moving in the opposite direction in the movable groove 221. This design ensures the unidirectional movement of the grounding rod 210 when closing the grounding contact 220, prevents possible misoperation or accidental reverse movement, and thus ensures the safety of the grounding operation.

[0028] The action of the grounding rod 210 acts on the anti-return plate 222 to make it tilt up and separate from the protrusion 223. When the anti-return plate 222 is restored by gravity, the anti-return plate 222 falls back on the protrusion 223, making it contact with the bottom of the anti-return plate 222. The anti-return plate 222 plays an anti-return role in the movable groove 221, preventing the grounding rod 210 from moving in the opposite direction during the closing process.

[0029] In some embodiments, the anti-return plate 222 is provided with an adapting groove 222 a , and the adapting groove 222 a is adapted to the grounding rod 210 being placed on one end of the anti-return plate 222 .

[0030] The adapting groove 222a provides a precise placement position for the grounding rod 210, ensuring that the grounding rod 210 is correctly aligned in the movable groove 221. This helps to improve the accuracy of the grounding operation and ensures that the grounding rod 210 can smoothly contact the grounding contact 220 to achieve effective grounding. The design of the adapting groove 222a helps to reduce the friction when the grounding rod 210 moves in the movable groove 221 because it provides a smooth contact surface for the grounding rod 210. This can reduce wear and extend the service life of the grounding rod 210 and the check plate 222.

[0031] When the anti-return plate 222 falls back on the protrusion 223, the action on the isolation baffle 132 can be stopped, and then the grounding rod 210 stops moving. The isolation baffle 132 and the grounding rod 210 may move in the opposite direction under the action of gravity. Then, when the grounding rod 210 moves in the opposite direction and contacts the anti-return plate 222, the outer side of the grounding rod 210 just fits into the adaptation groove 222a, thereby enhancing the structural stability between the anti-return plate 222 and the grounding rod 210, and ensuring that during the grounding operation, the grounding rod 210 will not move out of the predetermined position due to accidental movement.

[0032] In some embodiments, the grounding assembly 200 further includes a grounding switch 230 disposed on a side of the grounding contact 220 away from the grounding rod 210 .

[0033] The presence of the grounding knife 230 ensures that there is a clear grounding path between the grounding rod 210 and the grounding contact 220. This allows the current to flow safely to the ground in the event of a fault, protecting the safety of equipment and personnel. The side of the grounding knife 230 away from the grounding contact 220 can be connected to the ground through a grounding wire, so that when the grounding rod 210 moves to the grounding contact 220 and closes the grounding knife, the grounding wire provides a complete grounding path to guide the current to the ground.

[0034] In some embodiments, the isolating switch 100 includes a bracket 110, and a first insulator 120 and a second insulator 130 are respectively provided on both sides of the top of the bracket 110, and a first static contact 121 and a second static contact 131 are respectively provided on the top of the first insulator 120 and the second insulator 130, wherein one end of the isolation baffle 132 is hinged to the second static contact 131.

[0035] The isolating switch 100 is a part of the entire switch cabinet anti-leakage grounding device, which includes a bracket 110, which is the main structure of the isolating switch 100 and is used to support and fix other components. The insulator is a component used to isolate the conductive part (such as the isolating baffle 132) and the non-conductive part (such as the bracket 110) in the power system to ensure safe operation and prevent current leakage. The static contact is the conductive part of the isolating switch 100. When the switch is closed, they contact with the moving contact to form a conductive path. The isolating baffle 132 is an important component of the isolating switch. Its function is to physically isolate the static contact when the switch is disconnected to prevent current from passing. One end of the isolating baffle 132 is hinged to the second static contact 131, which means that the isolating baffle 132 can be separated from the first static contact 121 by rotation, thereby realizing the disconnection of the isolating switch 100.

[0036] In some embodiments, the side of the movable groove 221 that contacts the anti-return plate 222 is an arc surface, and the center of the arc surface is the same as the swing center of the isolation baffle 132.

[0037] The center of the arc surface is the same as the swing center of the isolation baffle 132, which means that the rotational movement of the isolation baffle 132 can be accurately transmitted to the grounding rod 210, ensuring that the movement of the grounding rod 210 in the movable groove 222 is synchronized with the swing of the isolation baffle 132, thereby ensuring the accuracy of the grounding operation.

[0038] In some embodiments, a rotating shaft 140 is rotatably provided on the bracket 110 , a transmission sheet 141 is provided outside the rotating shaft 140 , and a third insulator 150 is hingedly connected to the transmission sheet 141 , one end of which is hingedly connected to the isolation baffle 132 .

[0039] By arranging a rotating shaft 140 on the bracket 110, the isolation baffle 132 can be rotated. This design can generally provide a higher transmission efficiency, ensuring that the operating torque can be effectively transmitted to the isolation baffle 132. The existence of the transmission sheet 141 allows the operator to rotate the shaft 140 to apply power to the third insulator 150 through the transmission sheet 141, thereby controlling the opening and closing of the isolation baffle 132.

[0040] When the operator needs to disconnect the disconnector 100, they rotate the rotating shaft 140 on the bracket. The rotation of the rotating shaft transmits torque through the transmission sheet 141, so that the third insulator 150 hinged to the isolation baffle 132 rotates accordingly. As the third insulator 150 rotates, the isolation baffle 132 also rotates accordingly. When the isolation baffle 132 rotates to a certain position, it separates from the first static contact 121, and the disconnection of the disconnector 100 is realized.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A switch cabinet anti-leakage grounding device, comprising an isolating switch (100) and a grounding assembly (200), characterized in that: The isolating switch (100) is provided with an isolation baffle (132); the grounding assembly (200) comprises a grounding rod (210) and a grounding contact (220); a movable groove (221) is provided in the grounding contact (220); a non-return plate (222) is hingedly connected to the grounding contact (220) and is located in the movable groove (221) and has one end abutting against one side of the movable groove (221); one end of the grounding rod (210) is connected and fixed to the isolation baffle (132), and the other end extends into the movable groove (221) and is placed on the non-return plate (222).

2. The switch cabinet anti-leakage grounding device according to claim 1, characterized in that: The side where the movable groove (221) abuts against the anti-return plate (222) is an arc surface.

3. The switch cabinet anti-leakage grounding device according to claim 1, characterized in that: The grounding contact (220) is provided with a protrusion (223), and the protrusion (223) is located at the bottom of the abutting end of the anti-return plate (222).

4. The switch cabinet anti-leakage grounding device according to claim 1, characterized in that: The anti-return plate (222) is provided with an adapting groove (222a), and the adapting groove (222a) is adapted to the grounding rod (210) placed on one end of the anti-return plate (222).

5. The switch cabinet anti-leakage grounding device according to claim 1, characterized in that: The grounding assembly (200) further comprises a grounding switch (230) arranged on a side of the grounding contact (220) away from the grounding rod (210).

6. The switch cabinet anti-leakage grounding device according to claim 1, characterized in that: The isolating switch (100) comprises a bracket (110), a first insulator (120) and a second insulator (130) are respectively provided on both sides of the top of the bracket (110), a first static contact (121) and a second static contact (131) are respectively provided on the top of the first insulator (120) and the second insulator (130), wherein one end of the isolating baffle (132) is hinged to the second static contact (131).

7. The switch cabinet anti-leakage grounding device according to claim 6, characterized in that: A rotating shaft (140) is rotatably arranged on the bracket (110), a transmission sheet (141) is arranged outside the rotating shaft (140), and a third insulator (150) is hingedly connected to the transmission sheet (141), one end of which is hingedly connected to the isolation baffle (132).

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