An easy-to-maintain electric disconnect switch

Abstract

This utility model belongs to the field of electric disconnect switch technology, and in particular, it is an electric disconnect switch that is easy to maintain. It includes a base, a main shaft running through the inner wall of the base, and a driven gear fixedly connected to the outer wall of one end of the main shaft. A drive gear meshes with the outer wall of the driven gear, and a servo motor is mounted on the outer wall of one side of the drive gear. Equally spaced connecting rods are welded to the outer wall of one side of the main shaft, and a transmission rod is hinged to the outer wall of one side of the connecting rods. This utility model solves the operational difficulties when the electric drive fails by setting a fixed connection structure between the handle and the main shaft, improving the emergency response capability of the equipment. The first and second contacts are fixed to the base by the first and second insulators respectively, making disassembly and assembly convenient. Furthermore, the linkage design between the relay and the servo motor can monitor the motor's operating status in real time, avoiding overload damage, reducing maintenance difficulty and cost, and solving the problems of low maintenance efficiency and high maintenance costs of traditional equipment.

Description

Technical Field

[0001] This utility model relates to the field of electric disconnect switch technology, and in particular to an electric disconnect switch that is easy to maintain. Background Technology

[0002] Electric disconnect switches are key equipment in power systems used to isolate circuits and ensure maintenance safety. They achieve circuit isolation or connection by opening and closing the disconnecting and closing of the disconnecting switch. They are widely used in substations, distribution stations and other places, and their reliability directly affects the stable operation of the power system.

[0003] However, existing electric disconnect switches have some shortcomings in practical use:

[0004] First, when the electric drive system malfunctions, it is impossible to quickly and manually operate the switch, which hinders the maintenance work.

[0005] Secondly, the connection structure between the contacts and the disconnector is complex, making disassembly difficult during maintenance. Furthermore, the method of fixing the insulator to the base lacks flexibility, affecting the efficiency of component replacement. Utility Model Content

[0006] In view of the shortcomings of the prior art, this utility model provides an electric disconnect switch that is easy to maintain, which overcomes the shortcomings of the prior art and effectively solves the problems of not being able to quickly operate the opening and closing of the disconnect switch and the difficulty of disassembly during maintenance.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An easily maintainable electric disconnect switch includes a base, a main shaft running through the inner wall of the base, a driven gear fixedly connected to the outer wall of one end of the main shaft, a drive gear meshing on the outer wall of the driven gear, a servo motor mounted on the outer wall of one side of the drive gear, connecting rods evenly distributed welded to the outer wall of one side of the main shaft, a transmission rod hinged to the outer wall of one side of the connecting rod, a switch hinged to the top outer wall of the transmission rod, a first contact hinged to the outer wall of one end of the switch, and a second contact provided on the outer wall of the other end of the switch.

[0009] Preferably, the servo motor is fixedly connected to the inner wall of one side of the base by screws.

[0010] Preferably, the base has first insulators evenly distributed on one side of its top outer wall, and the first contact is mounted on the top outer wall of the first insulator.

[0011] Preferably, a second insulator is installed on the other side of the top outer wall of the base, and the second contact is installed on the top outer wall of the second insulator.

[0012] Preferably, a bearing seat is fixedly connected to one side of the outer wall of the base by bolts, and a handle is rotatably connected to the inner wall of the bearing seat by a bearing. The handle is fixedly connected to one end of the outer wall of the spindle.

[0013] Preferably, a relay is installed on one side of the outer wall of the base, on the side of the bearing seat, and the relay is connected to the servo motor via a signal line.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. The electric disconnect switch designed for easy maintenance solves the operational difficulties when the electric drive fails by setting a fixed connection structure between the handle and the main shaft. When the servo motor fails, the operator can directly drive the main shaft to rotate by rotating the handle on the bearing seat, thereby opening and closing the switch, ensuring smooth maintenance and improving the emergency response capability of the equipment.

[0016] 2. The electric disconnect switch designed in this way is easy to maintain. The first contact and the second contact are fixed on the base by the first insulator and the second insulator, respectively. It is easy to disassemble and assemble. Furthermore, the linkage design between the relay and the servo motor can monitor the motor's operating status in real time, avoid overload damage, reduce maintenance difficulty and cost, and solve the problems of low maintenance efficiency and high maintenance cost of traditional equipment. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the overall structure of an electric disconnecting switch that is easy to maintain when the disconnecting and closing knife switch is closed, as proposed in this utility model.

[0018] Figure 2 This is a top view of the overall structure of an electric disconnect switch with an easy-to-maintain disconnector when the switch is closed, as proposed in this utility model.

[0019] Figure 3 The front view of the overall structure of the electric disconnect switch proposed in this utility model when the opening and closing knife switch is closed, which is easy to maintain;

[0020] Figure 4 This is a three-dimensional schematic diagram of the overall structure of an electric disconnecting switch that is easy to maintain and operate, as proposed in this utility model, when the disconnecting and closing knife switch is open.

[0021] In the diagram: 1. Base; 2. Main shaft; 3. Driven gear; 4. Drive gear; 5. Servo motor; 6. Connecting rod; 7. Transmission rod; 8. Opening / closing knife switch; 9. First contact; 10. Second contact; 11. First insulator; 12. Second insulator; 13. Bearing housing; 14. Handle; 15. Relay. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-4 Example 1: An electric disconnect switch that is easy to maintain includes a base 1. A main shaft 2 is provided through the inner wall of the base 1, and a driven gear 3 is fixedly connected to the outer wall of one end of the main shaft 2. A drive gear 4 is meshed on the outer wall of the driven gear 3, and a servo motor 5 is installed on the outer wall of one side of the drive gear 4. The servo motor 5 is fixedly connected to the inner wall of one side of the base 1 by screws.

[0024] The driven gear 3 at one end of the main shaft 2 meshes with the drive gear 4. During operation, the servo motor 5 drives the drive gear 4 to rotate, which in turn drives the main shaft 2 to rotate through the driven gear 3, thus realizing the power transmission of electric drive.

[0025] In this embodiment, by setting a fixed connection structure between the handle 14 and the spindle 2, the operational difficulties when the electric drive fails are solved. When the servo motor 5 fails, the operator can directly drive the spindle 2 to rotate by rotating the handle 14 on the bearing seat 13, thereby driving the opening and closing knife switch 8 to open and close, ensuring that the maintenance work is carried out smoothly and improving the emergency response capability of the equipment.

[0026] In embodiment 2, connecting rods 6 are welded to one side of the outer wall of the main shaft 2 at equal intervals, and a transmission rod 7 is hinged to one side of the outer wall of the connecting rod 6. A switch 8 is hinged to the top outer wall of the transmission rod 7. A first contact 9 is hinged to one end of the outer wall of the switch 8, and a second contact 10 is provided on the other end of the outer wall of the switch 8.

[0027] The connecting rod 6 welded to the outer wall of the main shaft 2 is hinged to the transmission rod 7. The top of the transmission rod 7 is connected to the opening and closing knife gate 8, forming a connecting rod 6 transmission structure. When the main shaft 2 rotates, the connecting rod 6 drives the transmission rod 7 to move up and down, thereby controlling the opening and closing knife gate 8 to rotate around the first contact 9, realizing the opening and closing with the second contact 10.

[0028] In this embodiment, the first contact 9 and the second contact 10 are fixed on the base 1 by the first insulator 11 and the second insulator 12 respectively, which makes disassembly and assembly convenient. Furthermore, the linkage design between the relay 15 and the servo motor 5 can monitor the motor's operating status in real time, avoid overload damage, reduce maintenance difficulty and cost, and solve the problems of low maintenance efficiency and high maintenance cost of traditional equipment.

[0029] The base 1 has a first insulator 11 that is evenly distributed on one side of the top outer wall, and a first contact 9 that is installed on the top outer wall of the first insulator 11. The base 1 has a second insulator 12 that is evenly distributed on the other side of the top outer wall, and a second contact 10 that is installed on the top outer wall of the second insulator 12.

[0030] The first insulator 11 and the second insulator 12 fix the first contact 9 and the second contact 10 respectively, which not only ensures the insulation performance but also provides stable support.

[0031] A bearing seat 13 is fixedly connected to one side of the outer wall of the base 1 by bolts, and a handle 14 is rotatably connected to the inner wall of the bearing seat 13 by bearings. The handle 14 is fixedly connected to one end of the outer wall of the main shaft 2.

[0032] The handle 14 is fixed to the spindle 2 to ensure that the spindle 2 can rotate flexibly during manual operation without affecting the electric drive system.

[0033] A relay 15 is installed on one side of the outer wall of the base 1, which is located on the side of the bearing seat 13, and the relay 15 is connected to the servo motor 5 through a signal line.

[0034] Relay 15 can monitor parameters such as motor current and speed, and cut off the power supply in time when an abnormality occurs to protect the motor from damage.

[0035] Working Principle: The operation of this electric disconnect switch can be divided into two modes: electric operation and manual operation. In electric operation, relay 15 receives a control signal and starts servo motor 5. Servo motor 5 drives drive gear 4 to rotate, and drive gear 4 meshes with driven gear 3, thereby driving spindle 2 to rotate. Spindle 2 drives transmission rod 7 to move via connecting rod 6. Transmission rod 7 pushes the opening / closing switch 8 to rotate around the first contact 9, realizing the closing or opening of the circuit with the second contact 10, thus completing the connection or isolation of the circuit.

[0036] When the servo motor 5 malfunctions and cannot be operated electrically, the operator can directly drive the spindle 2 to rotate by turning the handle 14 on the bearing housing 13. The transmission path is the same as that of electric operation, ultimately realizing the manual opening and closing of the switch 8. The relay 15 monitors the operating status of the servo motor 5 in real time throughout the process. If an overload or other abnormal situation occurs, it immediately cuts off the motor power supply to ensure equipment safety.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An easily maintainable electrically operated disconnect switch, comprising a base (1), characterized in that, A main shaft (2) is provided through the inner wall of the base (1), and a driven gear (3) is fixedly connected to the outer wall of one end of the main shaft (2). A drive gear (4) meshes on the outer wall of the driven gear (3), and a servo motor (5) is installed on the outer wall of one side of the drive gear (4). A connecting rod (6) with equal distances is welded to the outer wall of one side of the main shaft (2), and a transmission rod (7) is hinged to the outer wall of one side of the connecting rod (6). A splitting and closing knife switch (8) is hinged to the top outer wall of the transmission rod (7). A first contact (9) is hinged to the outer wall of one end of the splitting and closing knife switch (8), and a second contact (10) is provided on the outer wall of the other end of the splitting and closing knife switch (8).

2. The electrically operated disconnect switch for easy maintenance according to claim 1, characterized in that, The servo motor (5) is fixedly connected to the inner wall of one side of the base (1) by screws.

3. The electrically operated disconnecting switch for easy maintenance according to claim 1, characterized in that, The base (1) has first insulators (11) that are evenly distributed on one side of the top outer wall, and the first contact (9) is installed on the top outer wall of the first insulator (11).

4. The electrically operated disconnect switch that is easy to maintain according to claim 1, characterized in that, The base (1) has two equally spaced second insulators (12) installed on the other side of the top outer wall, and the second contact (10) is installed on the top outer wall of the second insulator (12).

5. The electrically operated disconnect switch for easy maintenance according to claim 1, characterized in that, A bearing seat (13) is fixedly connected to one side of the outer wall of the base (1) by bolts, and a handle (14) is rotatably connected to the inner wall of the bearing seat (13) by bearings. The handle (14) is fixedly connected to one end of the outer wall of the main shaft (2).

6. The electrically operated disconnect switch for easy maintenance according to claim 1, characterized in that, A relay (15) is installed on one side of the outer wall of the base (1) on the side of the bearing seat (13), and the relay (15) is connected to the servo motor (5) through a signal line.

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