Disconnecting switch convenient to open

Abstract

A disconnecting switch convenient to open belongs to the technical field of power equipment. The problems that an existing disconnecting switch is high in opening operation risk, and the emergency capacity is insufficient when an automatic mechanism fails are solved. The device comprises a base, the surface of the base is fixedly provided with a load end insulator and a power-on end insulator, the top of the power-on end insulator is fixedly provided with an elastic lock catch frame, and the top of the load end insulator is rotatably connected with a conductive switch rod used in cooperation with the elastic lock catch frame; a jacking mechanism is arranged between the two sides of the base and used for jacking the conductive switch rod, the jacking mechanism comprises a driving piece and a mounting base, the top of the mounting base is fixedly connected with a jacking rod, the jacking rod is located below the conductive switch rod, and the side, close to the top, of the jacking rod is provided with an arc-shaped through insertion hole; and the driving piece is used for driving the mounting seat to move up and down. The method is mainly used for power system circuit on-off control, operation risks are reduced, and emergency reliability is improved.

Description

Technical Field

[0001] This utility model belongs to the field of power equipment technology, and in particular relates to a disconnecting switch that is easy to open. Background Technology

[0002] Disconnect switches are commonly used electrical devices in power systems, primarily used to connect and disconnect circuits. During equipment maintenance or fault handling, they effectively isolate energized parts from the work area, ensuring the safety of personnel and equipment. These devices are widely used in substations, distribution rooms, and other similar locations, and their operational stability directly affects the safe operation of the power system. Currently, most disconnect switches on the market consist of a base, insulators, conductive components, and a locking mechanism. The circuit is switched on or off by the rotation of the conductive components and the engagement or disengagement of the locking mechanism.

[0003] The opening operation of existing disconnect switches often presents many inconveniences. Some disconnect switches equipped with automatic opening mechanisms have relatively simple structural designs. When the automatic mechanism fails due to a malfunction, there is a lack of convenient and reliable emergency operation methods, making it impossible to quickly complete the opening. This can easily delay the opportunity to handle the fault and may even amplify the impact of the accident. The overall operational flexibility and emergency response capabilities need to be improved. Therefore, a disconnect switch that is easy to open is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a disconnecting switch that is easy to trip, which can reduce operational risks, improve emergency reliability, and solve existing technical problems.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] A disconnecting switch that facilitates tripping includes: a base, on the surface of which a load-end insulator and a energized-end insulator are fixedly mounted; an elastic locking frame is fixedly mounted on the top of the energized-end insulator; and a conductive switch rod that cooperates with the elastic locking frame is rotatably connected to the top of the load-end insulator.

[0007] A lifting mechanism is provided between the two sides of the base to lift the conductive switch rod. The lifting mechanism includes a driving component and a mounting base. A top rod is fixedly connected to the top of the mounting base. The top rod is located below the conductive switch rod. An arc-shaped through hole is provided on the side of the top rod near the top. The driving component is used to drive the mounting base to move up and down.

[0008] A manual operating mechanism is provided on one side of the conductive switch rod. The manual operating mechanism works in conjunction with the lifting mechanism to enable the conductive switch rod to be opened manually or automatically.

[0009] Furthermore, the driving component includes slide rails on both sides of the base, with two symmetrically arranged slide rods sliding within the slide rails via a slider. A bidirectional lead screw is rotatably connected between the two sides of the base, threaded through the two slide rods. Each slide rod is rotatably connected to a support rod, which is symmetrically and inclined.

[0010] Furthermore, a motor is fixedly connected to one side of the base, and one end of the motor output shaft is fixed to a bidirectional lead screw.

[0011] Furthermore, a telescopic sleeve is fixedly connected between the two slide rods, and the threaded portion of the bidirectional lead screw is located inside the telescopic sleeve.

[0012] Furthermore, the manual operating mechanism includes a mounting plate fixed to the bottom of the conductive switch rod, a drive plate rotatably connected to one side of the mounting plate, a mounting rod fixedly connected to the bottom of the drive plate, an arc-shaped rod fixedly connected to one end of the mounting rod, the arc-shaped rod having the same rotation center point as the drive plate, the arc-shaped rod being movably inserted into the socket, and a tension spring being installed between the drive plate and the mounting plate via a hook.

[0013] Furthermore, a limiting block for limiting the drive board is fixedly connected to the top of the conductive switch rod.

[0014] Furthermore, the drive plate is normally tilted and a drive ring is fixedly connected to its top.

[0015] Working principle: During a normal power outage, the motor can be started, driving the bidirectional lead screw to rotate. The bidirectional lead screw drives two sliding rods to approach each other, using a support rod to push the mounting base upwards. The mounting base drives the insulated top rod upwards. The top rod, through the insertion rod, the arc-shaped rod, and the drive plate, pushes the conductive switch rod to rotate, causing one end to disengage from the elastic locking frame. When the conductive switch rod rotates, relative sliding occurs between the arc-shaped rod and the insertion hole, ensuring that the conductive switch rod can open. Reversing the bidirectional lead screw resets the conductive switch rod, thus enabling power to be supplied. In an emergency requiring manual operation, the manual operating rod can hook the drive ring. Pulling down causes the drive ring to rotate the drive plate, disengaging the arc-shaped rod from the insertion hole. Continuing to pull allows for manual power disconnection, making it safer to use.

[0016] The embodiments of this utility model have the following beneficial effects:

[0017] In this invention, the linkage between the manual operation mechanism and the lifting mechanism ensures automatic tripping under normal conditions by engaging the arc-shaped rod with the socket. In an emergency, pulling down the drive ring disengages the arc-shaped rod and drives the conductive switch rod to trip. This achieves dual manual and automatic control, allowing for rapid power cut-off even in the event of automatic mechanism failure, thus improving the device's emergency reliability and operational safety.

[0018] In this invention, the motor, a bidirectional lead screw, and a support rod work together. The motor drives the bidirectional lead screw to slide the slide rod, which in turn pushes the mounting base and the top rod to rise and fall precisely, stably lifting the conductive switch rod to achieve circuit breaking. This avoids direct manual operation of high-voltage components, reducing operational risks. Simultaneously, the stable transmission ensures precise and controllable circuit breaking action, improving the efficiency of power operations.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention;

[0022] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present invention;

[0023] Figure 3 This is an embodiment of the present utility model. Figure 2 A magnified structural diagram of point A in the middle.

[0024] In the diagram: 1. Base; 2. Load-end insulator; 3. Conductive switch rod; 4. Energized end insulator; 5. Elastic locking bracket; 6. Slide rail; 7. Slide rod; 8. Bidirectional lead screw; 9. Motor; 10. Telescopic sleeve; 11. Mounting base; 12. Top rod; 13. Mounting plate; 14. Drive plate; 15. Tension spring; 16. Limit block; 17. Mounting rod; 18. Arc rod; 19. Socket; 20. Drive ring; 21. Support rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0027] In one embodiment: Please refer to Figures 1-3 As shown, this embodiment provides a disconnecting switch that facilitates tripping, including: a base 1, the surface of which is treated with anti-corrosion coating to adapt to installation requirements in different environments. On the surface of the base 1, a load-end insulator 2 and a current-carrying insulator 4 are fixedly installed by bolts, symmetrically distributed along the length of the base 1. An elastic locking frame 5 is fixed to the top of the current-carrying insulator 4. This elastic locking frame 5 is made of a conductive metal material with a certain elastic deformation capability, and its inner side forms a slot structure that matches the end of the conductive switch rod 3. The top of the load-end insulator 2 is rotatably connected to the conductive switch rod 3 via a rotating shaft. The end of the rod away from the load-end insulator 2 can be inserted into the slot of the elastic locking frame 5 to connect the circuit. When this end disengages from the slot, the circuit is disconnected.

[0028] To facilitate the opening of the conductive switch rod 3, a lifting mechanism is provided between the two sides of the base 1. This mechanism is specifically designed to lift the conductive switch rod 3, breaking its engagement with the elastic locking frame 5. The lifting mechanism includes a drive component and a mounting base 11. A push rod 12 is threadedly fixed to the top of the mounting base 11. The push rod 12 is made of insulating material to avoid the risk of leakage during the opening process. It is located below the conductive switch rod 3. When the mounting base 11 moves upward, the push rod 12 can accurately contact the bottom of the conductive switch rod 3 and apply an upward force. An arc-shaped through hole 19 is provided on the side of the push rod 12 near the top. The drive component provides the power source for the up-and-down movement of the mounting base 11.

[0029] The specific structure of the drive component includes slide rails 6 arranged on both sides of the base 1, with their length direction consistent with the length direction of the base 1. A slider is installed inside the slide rail 6, and the slider is fixedly connected to a slide rod 7, allowing the two symmetrically arranged slide rods 7 to slide smoothly along the extension direction of the slide rail 6. Between the two sides of the base 1, a through-type double-acting screw 8 is rotatably connected via bearings. The double-acting screw 8 has two sections of threads with opposite directions machined on its shaft, each thread passing through one of the two slide rods 7 and fitting into the threaded holes inside the slide rod 7. Each of the two slide rods 7 is rotatably connected to the mounting base 11 via a pin, and the two support rods 21 are symmetrically and inclined. The rotatable connection structure at both ends ensures that when the slide rod 7 moves, it can drive the support rod 21 to change angle, thereby converting it into the lifting and lowering motion of the mounting base 11. On one side of the base 1, a motor 9 is fixedly connected by a bracket. The motor 9 is a servo motor, and one end of its output shaft is fixedly connected to the end of the bidirectional lead screw 8 through a coupling. After the motor 9 is started, it can directly drive the bidirectional lead screw 8 to rotate. The motor 9 can be controlled by a controller.

[0030] In another embodiment: refer to Appendix Figures 1-3 A disconnecting switch that is easy to trip. The structure of this embodiment is basically the same as that of the previous embodiments, except that:

[0031] To prevent dust and impurities from entering the threaded portion of the bidirectional lead screw 8 and affecting transmission accuracy, a telescopic sleeve 10 is fixedly connected between the two slide rods 7. The telescopic sleeve 10 adopts a telescopic bellows structure, and the threaded portion of the bidirectional lead screw 8 is completely located inside the telescopic sleeve 10, achieving effective protection of the threaded structure. When power disconnection is required, the motor 9 is started, and the motor 9 drives the bidirectional lead screw 8 to rotate. Since the two sections of the thread of the bidirectional lead screw 8 rotate in opposite directions, the two slide rods 7 will approach each other under the guidance of the slide rail 6 and the slider. During the movement of the slide rods 7, the lower end of the support rod 21 moves synchronously, so that the included angle between the two support rods 21 gradually decreases. Their upper ends jointly push the mounting base 11 to move upward. The mounting base 11 drives the top rod 12 to move upward synchronously. The top rod 12, through the cooperation of the insertion hole 19 and the manual operation mechanism, pushes the conductive switch rod 3 to rotate around the rotating shaft at the top of the load end insulator 2, so that the end of the conductive switch rod 3 away from the elastic locking frame 5 disengages from the slot, completing the disconnection operation. During this process, when the conductive switch rod 3 rotates, the arc rod 18 in the manual operating mechanism will slide relative to each other in the socket 19, which can prevent the top rod 12 from interfering with the rotation of the conductive switch rod 3 and ensure that the conductive switch rod 3 opens smoothly. When it is necessary to reconnect the power, the control motor 9 reverses, which drives the bidirectional lead screw 8 to rotate in the opposite direction. The two slide rods 7 move away from each other along the slide rail 6, the included angle between the support rods 21 increases, and the mounting base 11 and the top rod 12 move down accordingly. Their ends are re-engaged into the slot of the elastic locking bracket 5 to realize the circuit connection.

[0032] A manual operating mechanism is provided on one side of the conductive switch rod 3. This mechanism works in conjunction with the lifting mechanism to allow the conductive switch rod 3 to be opened manually or automatically, improving the applicability of the device in emergency situations. The manual operating mechanism includes a mounting plate 13 fixed to the bottom of the conductive switch rod 3. The mounting plate 13 is welded to the conductive switch rod 3. A drive plate 14 is rotatably connected to one side of the mounting plate 13 via a rotating shaft. A mounting rod 17 is bolted to the bottom of the drive plate 14. One end of the mounting rod 17 is welded to an arc-shaped rod 18. The center of the arc-shaped rod 18 coincides perfectly with the rotation center of the drive plate 14, ensuring that the arc-shaped rod 18 can move in an arc around the same center when the drive plate 14 rotates. The arc-shaped rod 18 is movably inserted into the insertion hole 19 on the top rod 12. Under normal conditions, the arc-shaped rod 18 is inserted into the insertion hole 19, allowing the lifting mechanism to drive the conductive switch rod 3 through the top rod 12. Between the drive plate 14 and the mounting plate 13, a tension spring 15 is installed via a hook. The tension spring 15 is always in a slightly stretched state, providing a reset force for the drive plate 14.

[0033] The top of the conductive switch rod 3 is fixedly connected to the limit block 16 by screws. The limit block 16 is located on one side of the drive plate 14. When the drive plate 14 is in normal state, its side contacts the limit block 16 to prevent the drive plate 14 from rotating excessively under its own weight and the force of the rear tension spring 15, and to ensure that the arc rod 18 can be stably inserted into the socket 19.

[0034] The drive plate 14 is normally tilted, with a drive ring 20 welded to its top. The drive ring 20 has a closed-loop structure for easy engagement with the manual operating lever. In case of an emergency where the motor 9 cannot operate normally and manual operation is required, the operator can hook the drive ring 20 with the hook at the end of the dedicated manual operating lever and pull the drive ring 20 downwards. The drive ring 20 drives the drive plate 14 to rotate around the shaft connected to the mounting plate 13. During this process, the rear tension spring 15 is further stretched. When the drive plate 14 rotates, it drives the mounting rod 17 and the arc rod 18 to rotate synchronously, causing the arc rod 18 to gradually disengage from the insertion hole 19 on the top rod 12, thus disconnecting the manual operating mechanism from the lifting mechanism. Continuing to pull the drive ring 20 downwards, the drive plate 14 will drive the conductive switch rod 3 to rotate around the shaft at the top of the load-end insulator 2, causing the conductive switch rod 3 to disengage from the elastic locking frame 5, achieving manual power cut-off. This allows for a rapid response when the automatic mechanism fails, making the process safer and more reliable.

[0035] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0036] It should be noted that in the description of this specification, descriptions such as "first" and "second" are only used to distinguish the features and do not have any actual order or directional meaning. This application is not limited to this.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An isolator facilitating switching, comprising a base (1), a load end insulator (2) and a power end insulator (4) fixedly installed on the surface of the base (1), and a resilient lock catch frame (5) fixedly installed on the top of the power end insulator (4), and a conductive switch rod (3) rotatably connected to the top of the load end insulator (2) and cooperatively used with the resilient lock catch frame (5), characterized in that: a jacking mechanism is arranged between the two sides of the base (1) for jacking up the conductive switch rod (3), the jacking mechanism comprising a driving member and a mounting seat (11), the top of the mounting seat (11) being fixedly connected with a jacking rod (12) located below the conductive switch rod (3), and an arc-shaped through insertion hole (19) being arranged on the side of the jacking rod (12) close to the top, and the driving member being used for driving the mounting seat (11) to move up and down; a manual operating mechanism is arranged on one side of the conductive switch rod (3), and the manual operating mechanism cooperates with the jacking mechanism to realize manual or automatic opening of the conductive switch rod (3). The driving member comprises two symmetrically arranged slide rods (7) slidably arranged in slide ways (6) arranged on the two sides of the base (1), and a through bidirectional screw rod (8) rotatably connected between the two sides of the base (1), the bidirectional screw rod (8) being threadedly penetrated through the two slide rods (7), and a brace rod (21) rotatably connected between each of the two slide rods (7) and the mounting seat (11), the two brace rods (21) being symmetrically and obliquely arranged.

2. The disconnector facilitating opening of the circuit according to claim 1, characterized in that A motor (9) is fixedly connected to one side of the base (1), and one end of the output shaft of the motor (9) is fixedly connected with the bidirectional screw rod (8).

3. The disconnector facilitating opening of the circuit according to claim 2, characterized in that A telescopic sleeve (10) is fixedly connected between the two slide rods (7), and the threaded portion of the bidirectional screw rod (8) is located in the telescopic sleeve (10).

4. The disconnector facilitating opening of the circuit according to claim 2, characterized in that The manual operating mechanism comprises a mounting plate (13) fixedly connected to the bottom of the conductive switch rod (3), a driving plate (14) rotatably connected to one side of the mounting plate (13), an installation rod (17) fixedly connected to the bottom of the driving plate (14), an arc-shaped rod (18) fixedly connected to one end of the installation rod (17), the arc-shaped rod (18) having the same center of rotation as the driving plate (14), the arc-shaped rod (18) being movably inserted into the insertion hole (19), and a tension spring (15) being arranged between the driving plate (14) and the mounting plate (13) through a hook.

5. The disconnector facilitating opening of the circuit according to claim 1, characterized in that, A limiting block (16) for limiting the driving plate (14) is fixedly connected to the top of the conductive switch rod (3).

6. A disconnector facilitating opening of the circuit, according to claim 5, characterised in that The driving plate (14) is obliquely arranged in normal state and has a driving ring (20) fixedly connected to the top thereof.

7. The disconnector facilitating opening of the circuit according to claim 5, characterized in that, ​

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