Insulating rod type electric arc extinction switch

Abstract

The invention relates to the technical field of power system hot-line work equipment, and discloses an insulating rod type electric arc extinction switch, which comprises an insulating rod, one end of the insulating rod is provided with a shell, and is characterized in that a vertically arranged conducting rod is arranged in the shell, the periphery of the conducting rod is sleeved with a closing spring, the top end of the conducting rod is fixedly provided with a moving contact, and the top end of the moving contact is fixedly provided with a spring. The top end of the closing spring is connected with the moving contact, a static contact is fixedly arranged in the shell, a fixing rod is arranged at the top of the static contact, and a clamping mechanism is arranged at the end, extending out of the shell, of the fixing rod. According to the invention, the arc extinction switch is combined with the insulating rod, and an electric driving and electromagnetic control structure is integrated in the shell, so that the opening and closing operation of the arc extinction switch in the live bypass operation does not depend on manual pulling or mechanical energy storage release any more, and the operation can be completed outside a safe distance; the safety risk caused by the fact that an operator makes close contact with a live wire is effectively reduced, and the intrinsic safety of live working is improved.

Description

Technical Field

[0001] This invention relates to the field of live-line working equipment for power systems, and in particular to an insulated rod type electric arc suppression switch. Background Technology

[0002] Live-line working is one of the important operational methods to ensure the safe and stable operation of power distribution networks. Among live-line working operations in power distribution networks, disconnecting unloaded overhead lines and lines with a mix of overhead lines and cables are the most common and account for the largest proportion of work items. During these operations, due to the inherent capacitance to ground and between phases in the lines, capacitive current, switching overvoltage, and arcing inevitably occur during disconnection operations. Therefore, arc suppression technology and arc suppression devices have become indispensable and important technical means in live-line working of power distribution networks.

[0003] Currently, in engineering applications, arc suppression switches are mostly used for disconnecting unloaded lines. Among these, the technical solution closest to this invention is the traditional manual arc suppression switch. This type of arc suppression switch typically uses an insulating rod as an operating tool, and operators manually apply force to open and close the contacts. The disconnection process largely relies on the energy storage and release mechanism of a mechanical spring to separate the contacts. In practical applications, some arc suppression switches adopt a suspended structure, installed on overhead conductors or cable leads, and are connected, clamped, and operated via an insulating rod.

[0004] Represented by the mature Break-Safe series arc-extinguishing switches used in existing projects, this type of device adopts a suspended structure and mainly includes an insulating shell, main contact system, arc-extinguishing structure, mechanical energy storage and release mechanism, operating interface, and conductor suspension and connection components. During use, operators need to use an insulated bucket truck to hang the arc-extinguishing switch on the overhead line or cable lead-in line. After completing the bypass or lead-in line connection, an operating force is applied to the operating device through the insulating rod, causing the internal energy storage mechanism to release mechanical energy and drive the movable contact to complete the closing or opening operation. During the breaking process, the arc is quickly elongated and extinguished within the arc-extinguishing structure, thereby breaking the capacitive current.

[0005] Although traditional manual arc suppression switches are widely used in the industry, they still have significant shortcomings in practical applications. First, the breaking process of these switches is highly dependent on manual operation. The contact separation speed and timing are greatly affected by the operator's strength and stability, making it difficult to guarantee rapid and stable contact separation. This can easily lead to prolonged arc duration, resulting in increased operating overvoltage amplitude and contact erosion, thus affecting the arc suppression effect and equipment lifespan. Second, the mechanical spring energy storage breaking method itself has limitations in terms of speed and consistency, especially when the capacitive current is large, making it difficult to meet the requirements for rapid breaking operations.

[0006] Furthermore, during live-line bypass operations, traditional arc-suppression switches are often suspended from the conductors. Workers must frequently raise and lower the insulating bucket and approach the live lines during connection, disassembly, and operation. At the moment of disconnection, the conductors are prone to swaying, posing a safety hazard of conductor displacement, accidental contact, or abnormal arcing under dynamic conditions such as wind loads or personnel disturbances, thus threatening the personal safety of workers. Simultaneously, because the entire operation relies on manual labor, the on-site work involves numerous steps, is labor-intensive, and is highly dependent on operational timing and personnel experience, resulting in low overall work efficiency and high operational risks and uncertainties.

[0007] Existing arc suppression switches generally lack effective electric drive and electrical control methods, making it difficult to achieve rapid, stable, and controllable operation of the contact breaking process. They also struggle to reliably operate remotely from a safe distance, resulting in a strong dependence on the force and timing of manual operation during the breaking process. This makes it difficult to balance arc suppression performance, operational safety, and operational efficiency. Therefore, it is necessary to improve the structure and driving method of existing arc suppression switches to meet the needs of live-line work in distribution networks for rapid disconnection of unloaded lines, effective arc suppression, and improved operational safety and efficiency. Summary of the Invention

[0008] The purpose of this invention is to address the shortcomings of existing technologies by proposing an insulated rod type electric arc suppression switch.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] An insulated rod type electric arc suppression switch includes an insulating rod with a housing at one end. The housing houses the functional components of the arc suppression switch and provides structural support. A vertically arranged conductive rod is installed inside the housing, extending along the height of the housing to guide the axial movement of the moving contact and form an electrical connection path. A closing spring is fitted around the outer periphery of the conductive rod, and a moving contact is fixedly mounted at the top of the conductive rod. The top of the closing spring is connected to the moving contact, providing an elastic driving force to the moving contact and the conductive rod during closing.

[0011] A stationary contact is fixedly installed inside the housing. When the moving contact moves upward under the action of the closing spring and contacts the stationary contact, a conductive state is formed, thereby completing the closing action of the arc suppression switch. A fixing rod is provided on the top of the stationary contact. A clamping mechanism is provided at one end of the fixing rod extending to the outside of the housing. The clamping mechanism is used to clamp the wire during operation, so that the arc suppression switch can be stably installed on the wire and avoid shaking or displacement during operation.

[0012] A transmission rack is slidably arranged inside the housing, and a reset drive mechanism is provided inside the housing. A connecting rod is provided on one side of the transmission rack, and one end of the connecting rod is connected to the side of the moving contact. The reset drive mechanism includes a first motor, and an electromagnetic clutch is installed on the output shaft of the first motor. A transmission gear is sleeved on the outer periphery of the electromagnetic clutch, and the transmission gear meshes with the transmission rack. An electromagnetic limit mechanism is provided inside the housing.

[0013] Preferably, the clamping mechanism includes a lifting sleeve fitted on the top of the fixed rod, the top of the lifting sleeve is provided with a limiting member with an arc-shaped structure, and a receiving groove is opened at one end of the fixed rod extending to the top of the housing. The inner arc surface of the limiting member and the receiving groove constitute the receiving space for the wire, and the inner diameter of the receiving space is adapted to the outer diameter of the wire.

[0014] Preferably, the bottom of the lifting sleeve is provided with a mounting rod, and two horizontally arranged extension rods are installed at one end of the mounting rod that extends into the housing.

[0015] Preferably, a second motor is installed inside the housing. The output shaft of the second motor is provided with a cam. A horizontally arranged actuating rod is provided on one side of the cam. One end of the actuating rod is located between two extension rods, and the actuating rod and the extension rods form an actuating engagement.

[0016] Preferably, the cam has a ratchet on the side away from the actuating lever, and the housing has a ratchet pawl inside, with one end of the ratchet pawl engaging with the teeth of the ratchet.

[0017] Preferably, the electromagnetic limiting mechanism includes an electromagnet installed on one side wall of the housing, an armature on one side of the electromagnet, and a limiting component on the side of the armature away from the electromagnet.

[0018] Preferably, the limiting component and the connecting rod are located in different vertical directions.

[0019] Preferably, a conductive rod is provided on one side of the housing.

[0020] The beneficial effects of this invention are as follows:

[0021] This invention combines an arc-suppressing switch with an insulating rod and integrates an electric drive and electromagnetic control structure within the housing. This eliminates the need for manual pulling or mechanical energy release during the opening and closing operations of the arc-suppressing switch in live bypass work. As a result, the operation can be completed from a safe distance, effectively reducing the safety risks associated with workers coming into close contact with live conductors and improving the inherent safety of live work.

[0022] By setting a closing spring, a moving contact, and a stationary contact inside the housing, and cooperating with the limit and release control of the electromagnetic limit mechanism, the moving contact can move quickly under the elastic action of the closing spring and contact the stationary contact during the closing phase. The closing action is not affected by the inertia of the motor, and the closing speed is fast and consistent. This helps to reduce the duration of the electric arc during the contact opening and closing process, improve the arc suppression effect, and reduce the degree of contact erosion.

[0023] By setting up a reset drive mechanism consisting of a first motor, an electromagnetic clutch, transmission gears, and a transmission rack, the moving contact can achieve controlled reset under the drive of the motor after the operation is completed, and simultaneously complete the compression and energy storage of the closing spring. The electromagnetic clutch makes the motor drive and the release process of the closing spring independent of each other, avoiding back drag interference from the motor on the closing action, thus balancing the speed of the closing action and the controllability of the reset process.

[0024] By incorporating a clamping mechanism at the top of the housing, and employing a combination of a second motor, cam, actuating lever, extension rod, and ratchet and ratchet pawl, the electric clamping, holding, and unlocking operations on the conductor are achieved. This clamping mechanism can maintain a stable state after clamping, preventing loosening due to external forces or vibrations, thereby improving the installation reliability of the arc suppression switch on the conductor and reducing the impact of conductor swaying on the opening and closing operations during operation.

[0025] By setting a current-guiding conductive rod on one side of the housing, a current-guiding channel is provided for the opening, closing, and bypassing operations. This helps to guide the charge or current in the conductor, reduce the concentration of arc energy during the opening and closing process, improve electrical safety during operation, and enhance the reliability of the device in practical applications without affecting the mechanical structure and operation mode of the arc-extinguishing switch.

[0026] In summary, this invention, through the rational configuration of the contact opening and closing mechanism, reset drive mechanism, clamping mechanism, and auxiliary current guiding structure, enables the arc suppression switch to achieve electrification, controllability, and remote operation of opening and closing in live bypass work. While ensuring arc suppression performance, it improves operational safety, consistency of action, and reliability of use, and has good practical application value. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an insulating rod type electric arc suppression switch according to an embodiment of the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram of the local structure at point A in the middle;

[0029] Figure 3 for Figure 1 A schematic diagram of the local structure at point B;

[0030] Figure 4 This is a side view of the cam, actuating rod, and ratchet pawl in an insulating rod type electric arc suppression switch according to an embodiment of the present invention.

[0031] Figure 5 This is a cross-sectional view of the lifting sleeve, limiting member, and extension rod in an insulating rod type electric arc suppression switch according to an embodiment of the present invention.

[0032] In the diagram: 1-Housing, 2-Conductive rod, 3-Closing spring, 4-Moving contact, 6-Static contact, 7-Connecting rod, 9-Transmission rack, 10-Electromagnetic limit mechanism, 11-Reset drive mechanism, 111-First motor, 112-Electromagnetic clutch, 113-Transmission gear, 12-Insulating rod, 13-Conducting rod, 14-Clamping mechanism, 141-Limiting element, 142-Receiving groove, 143-Lifting sleeve, 144-Extension rod, 145-Second motor, 146-Cam, 147-Ratchet pawl, 148-Ratchet, 149-Actuating rod, 1411-Mounting rod, 15-Fixing rod. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] Reference Figures 1 to 5 An insulated rod type electric arc suppression switch includes an insulating rod 12, one end of which is provided with a housing 1. The housing 1 is used to house the various functional components of the arc suppression switch and to provide insulation and protection. A vertically arranged conductive rod 2 is installed inside the housing 1. The conductive rod 2 serves as a current conduction component. The top of the conductive rod 2 is provided with a stationary contact 6, which is used to contact the moving contact 4 to form a conductive circuit when the switch is closed.

[0035] A closing spring 3 is fitted around the outer periphery of the conductive rod 2. The closing spring 3 is arranged along the axial direction of the conductive rod 2, with its lower end located in the lower region inside the housing 1. A moving contact 4 is fixedly installed at the top of the conductive rod 2. The top of the closing spring 3 is connected to the moving contact 4, allowing the moving contact 4 and the conductive rod 2 to move vertically under the elastic action of the closing spring 3. In the closed state, the moving contact 4 and the stationary contact 6 are in contact with each other, thereby realizing the conduction of the line.

[0036] A stationary contact 6 is fixedly installed inside the housing 1. A fixing rod 15 is provided on the top of the stationary contact 6. A clamping mechanism 14 is provided at one end of the fixing rod 15 extending to the outside of the housing 1. The clamping mechanism 14 is used to clamp the wire during operation, so that the arc suppression switch can be stably installed on the wire, thereby providing reliable mechanical fixing conditions for subsequent closing and opening operations. A transmission rack 9 is slidably installed inside the housing 1. The transmission rack 9 can slide linearly in a predetermined direction inside the housing 1. A connecting rod 7 is provided on one side of the transmission rack 9. One end of the connecting rod 7 is connected to the side of the moving contact 4, so that the linear movement of the transmission rack 9 can be transmitted to the moving contact 4 and the conductive rod 2, thereby driving the moving contact 4 and the conductive rod 2 to move up and down.

[0037] The housing 1 is equipped with a reset drive mechanism 11, which includes a first motor 111. The first motor 111 is fixedly installed inside the housing 1. An electromagnetic clutch 112 is installed on the output shaft of the first motor 111. A transmission gear 113 is sleeved on the outer periphery of the electromagnetic clutch 112. The transmission gear 113 meshes with the transmission rack 9 and is used to convert the rotational motion of the first motor 111 into the linear motion of the transmission rack 9 when the electromagnetic clutch 112 is engaged. The housing 1 is also equipped with an electromagnetic limiting mechanism 10 for limiting the moving contact 4.

[0038] In use, the worker lifts the insulating rod 12 to move the housing 1 to the operating position and clamps the wire using the clamping mechanism 14. Before use, the moving contact 4 is in the initial position at the bottom of the housing 1 under the action of the transmission rack 9 and the connecting rod 7, and the closing spring 3 is in a compressed and energy-storing state. At this time, the electromagnetic limit mechanism 10 limits the moving contact 4 to prevent the moving contact 4 from moving unexpectedly.

[0039] When the arc suppression switch needs to be closed, the electromagnetic limit mechanism 10 releases the limit on the moving contact 4. Under the elastic action of the closing spring 3, the moving contact 4 moves upward rapidly until it contacts the stationary contact 6, thus completing the closing. During the upward movement of the moving contact 4, the electromagnetic clutch 112 is de-energized, and the first motor 111 is disengaged from the transmission gear 113. At this time, the moving contact 4 drives the transmission rack 9 to move upward through the connecting rod 7. The transmission gear 113 rotates relative to the electromagnetic clutch 112 under the meshing action with the transmission rack 9, without affecting the release process of the closing spring 3.

[0040] After the operation is completed, the power supply of the electromagnetic clutch 112 is turned on, so that the electromagnetic clutch 112 engages with the output shaft of the first motor 111. The first motor 111 drives the electromagnetic clutch 112 and the transmission gear 113 to rotate. The transmission rack 9 moves downward in a straight line under the meshing action of the transmission gear 113, thereby driving the moving contact 4 and the conductive rod 2 to move downward through the connecting rod 7 until they are reset to the initial position, and the closing spring 3 is compressed and stored again to prepare for the next closing operation.

[0041] In a preferred embodiment of the present invention, the clamping mechanism 14 is disposed on the top of the housing 1 and is used to clamp the wire during operation, thereby enabling the arc-extinguishing switch to be stably installed on the wire. The clamping mechanism 14 includes a lifting sleeve 143 sleeved on the top of the fixing rod 15. The lifting sleeve 143 is axially movable relative to the fixing rod 15 to clamp or release the wire. The top of the lifting sleeve 143 is provided with an arc-shaped limiting member 141. The end of the fixing rod 15 extending to the top of the housing 1 is provided with a receiving groove 142. The inner arc surface of the limiting member 141 is opposite to the receiving groove 142, and the two together constitute a receiving space for receiving the wire. The inner diameter of the receiving space is adapted to the outer diameter of the wire to be clamped, so that the wire can be stably positioned between the limiting member 141 and the receiving groove 142 in the clamped state, thereby achieving reliable positioning and clamping of the wire.

[0042] The bottom of the lifting sleeve 143 is provided with a mounting rod 1411. The mounting rod 1411 extends axially downward into the housing 1. Two horizontally arranged extension rods 144 are installed at one end of the mounting rod 1 inside the housing 1. The two extension rods 144 are spaced apart from each other and are used to cooperate with the subsequent drive structure to drive the lifting sleeve 143 to move along the direction of the fixed rod 15.

[0043] A second motor 145 is installed inside the housing 1. The output shaft of the second motor 145 is provided with a cam 146, which is used to convert the rotational motion of the second motor 145 into a driving action on the lifting sleeve 143. A horizontally arranged actuating rod 149 is provided on one side of the cam 146. One end of the actuating rod 149 is located between two extension rods 144. When the cam 146 rotates, the actuating rod 149 can form a toggle engagement with the extension rods 144, thereby pushing or releasing the extension rods 144, and thus driving the mounting rod 1411 and the lifting sleeve 143 to move axially.

[0044] A ratchet 148 is provided on the side of the cam 146 away from the actuating lever 149, and a ratchet pawl 147 is provided inside the housing 1. One end of the ratchet pawl 147 engages with the teeth of the ratchet 148. Through the cooperation of the ratchet 148 and the ratchet pawl 147, the cam 146 can achieve unidirectional rotation under the drive of the second motor 145, thereby keeping the lifting sleeve 143 in the clamping position during the clamping process and preventing reverse rotation under the action of external force, which would cause the clamping state to loosen.

[0045] With the above-mentioned structural configuration, driven by the second motor 145, the cam 146, through the cooperation of the actuating rod 149 and the extension rod 144, drives the lifting sleeve 143 to move up and down relative to the fixed rod 15. When the limiting member 141 moves upward with the lifting sleeve 143 to the side of the receiving groove 142, the receiving space clamps the wire. When the limiting member 141 moves downward with the lifting sleeve 143 to the bottom of the receiving groove 142, the wire is released from the receiving space, thereby realizing the clamping and fixing or unlocking operation of the wire.

[0046] As a preferred embodiment of the present invention, the outer arc surface of the limiting member 141 away from the receiving groove 142 is designed to prevent the limiting member 141 from scratching objects in the surrounding environment when it is raised or lowered.

[0047] In a preferred embodiment of the present invention, the electromagnetic limiting mechanism 10 is disposed inside the housing 1, and includes an electromagnet mounted on one side wall of the housing 1. The electromagnet is fixedly disposed on the housing 1 and is used to generate a corresponding electromagnetic force in the energized or de-energized state to drive the armature cooperating with it to change position.

[0048] An armature is provided on one side of the electromagnet, and the armature is arranged opposite to the electromagnet and can move relative to the housing 1 under the action of the electromagnet. As a force-bearing component in the electromagnetic limiting mechanism 10, the movement state of the armature is controlled by the energization state of the electromagnet, thereby realizing the control of the movement state of the moving contact 4 in different working stages.

[0049] A limiting component is provided on the side of the armature away from the electromagnet, which is used to form a limiting engagement with the moving contact 4. In the limited state, after the electromagnet is energized, it drives the armature to move, so that the limiting component is in a position that abuts against or restricts the movement of the moving contact 4, thereby limiting the moving contact 4 and preventing it from moving under non-closing conditions. Through this limiting method, the moving contact 4 can remain stable in its initial position, which is beneficial to the energy storage of the closing spring 3.

[0050] When a closing operation is required, the electromagnet changes its energization state, causing the armature to move back as the electromagnetic force weakens or disappears. The limiting component moves with the armature and disengages from the moving contact 4, thus releasing the constraint on the moving contact 4. At this time, the moving contact 4 and the conductive rod 2 can move vertically upward under the elastic action of the closing spring 3, realizing the subsequent closing action.

[0051] With the above structural configuration, the electromagnetic limit mechanism 10 can limit or release the moving contact 4 at different working stages, realize the control of the movement sequence of the moving contact 4, and cooperate with the working process of the closing spring 3 and the reset drive mechanism 11 to ensure the reliability of the arc suppression switch during use.

[0052] In a preferred embodiment of the present invention, a current-guiding conductive rod 13 is provided on one side of the housing 1. The current-guiding conductive rod 13 is fixedly disposed on the outside of the housing 1 and electrically connected to the conductive structure of the arc-suppression switch. The current-guiding conductive rod 13 is used to provide a current-guiding channel for the line or device during the opening and closing of the arc-suppression switch and its operation, so as to guide the charge or current in the conductor.

[0053] After the arc suppression switch is installed and the conductor is clamped, the current-guiding conductive rod 13 can be used in conjunction with external conductors or current-guiding lines to release or transfer the charge in the conductor through the current-guiding conductive rod 13, thereby preventing the charge from accumulating inside the arc suppression switch or on the conductor. By setting the current-guiding conductive rod 13, it is beneficial to reduce the concentration of arc energy that may occur during the opening and closing of the switch, and to improve the electrical safety during operation.

[0054] During use, the first motor 111, the second motor 145, and the electromagnet in the electromagnetic limit mechanism 10 of the arc suppression switch are all electrically driven components, and are electrically connected to the power supply system and control system inside the arc suppression switch, respectively. Workers operate the arc suppression switch using a remote control. The remote control sends control commands to the arc suppression switch to control the on / off states of the first motor 111, the second motor 145, and the electromagnetic limit mechanism 10, thereby achieving actions such as clamping and unlocking of the clamping mechanism 14 and closing and resetting of the moving contact 4.

[0055] When in use, the arc suppression switch is powered by a power supply device installed on it. This power supply device provides the necessary power for the operation of the first motor 111, the second motor 145, the electromagnetic clutch 112, and the electromagnets in the electromagnetic limit mechanism 10. After the remote controller issues a corresponding control command, the control system selectively energizes or de-energizes each electric drive component according to the command, causing each component to operate in a predetermined sequence, thereby completing the clamping, closing, opening, and resetting operations of the arc suppression switch.

[0056] In this way, the arc suppression switch does not require direct manual contact with the contacts or wires during use. Workers can control each electrical component remotely from a safe distance, making the opening, closing, and clamping operations of the arc suppression switch highly controllable and safe to operate.

[0057] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An insulated rod type electric arc suppression switch, comprising an insulating rod (12), one end of which is provided with a housing (1), characterized in that, The housing (1) is equipped with a vertically arranged conductive rod (2), and a closing spring (3) is sleeved on the outer periphery of the conductive rod (2). A moving contact (4) is fixedly installed at the top of the conductive rod (2). The top of the closing spring (3) is connected to the moving contact (4). A stationary contact (6) is fixedly installed inside the housing (1). A fixing rod (15) is provided at the top of the stationary contact (6). A clamping mechanism (14) is provided at one end of the fixing rod (15) extending to the outside of the housing (1) for clamping the wire. The housing (1) is slidably provided with a transmission rack (9), and the housing (1) is provided with a reset drive mechanism (11). A connecting rod (7) is provided on one side of the transmission rack (9), and one end of the connecting rod (7) is connected to the side of the moving contact (4). The reset drive mechanism (11) includes a first motor (111), and an electromagnetic clutch (112) is installed on the output shaft of the first motor (111). A transmission gear (113) is sleeved on the outer periphery of the electromagnetic clutch (112), and the transmission gear (113) meshes with the transmission rack (9). The housing (1) is provided with an electromagnetic limiting mechanism (10) for limiting the moving contact (4).

2. The insulated rod type electric arc suppression switch according to claim 1, characterized in that, The clamping mechanism (14) includes a lifting sleeve (143) sleeved on the top of the fixed rod (15), and the top of the lifting sleeve (143) is provided with a limiting member (141) with an arc structure.

3. The insulated rod type electric arc suppression switch according to claim 1, characterized in that, The fixing rod (15) extends to one end of the top of the housing (1) and has a receiving groove (142).

4. The insulated rod type electric arc suppression switch according to claim 3, characterized in that, The bottom of the lifting sleeve (143) is provided with an installation rod (1411), and two horizontally arranged extension rods (144) are installed at one end of the installation rod (1411) extending into the interior of the housing (1).

5. An insulated rod type electric arc suppression switch according to claim 4, characterized in that, The housing (1) is equipped with a second motor (145). The output shaft of the second motor (145) is provided with a cam (146). A horizontally arranged lever (149) is provided on one side of the cam (146). One end of the lever (149) is located between two extension rods (144). The lever (149) and the extension rods (144) form a levering engagement.

6. An insulated rod type electric arc suppression switch according to claim 5, characterized in that, The cam (146) has a ratchet (148) on the side away from the lever (149), and a ratchet pawl (147) is provided inside the housing (1). One end of the ratchet pawl (147) engages with the teeth of the ratchet (148).

7. An insulated rod type electric arc suppression switch according to claim 1, characterized in that, The electromagnetic limiting mechanism (10) includes an electromagnet installed on one side wall of the housing (1), an armature is provided on one side of the electromagnet, and a limiting component is provided on the side of the armature away from the electromagnet.

8. The insulating rod type electric arc suppression switch according to claim 1, characterized in that, A conductive rod (13) is provided on one side of the housing (1).

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