Remote trip mechanism and disconnector

Abstract

This application relates to a remote tripping mechanism and a disconnecting switch, including a mounting bracket, a switch shaft, a trip latch, a locking latch, and a limiting mechanism. The switch shaft is rotatably connected to the mounting bracket; the trip latch is connected to the switch shaft; the locking latch is rotatably connected to the mounting bracket; the limiting mechanism is connected to the mounting bracket and abuts against the locking latch to limit the locking latch's position on the trip latch. This remote tripping mechanism, through an innovative limiting mechanism design, effectively solves the contradiction between stability and tripping resistance caused by the single spring preload in traditional structures. Compared with the prior art, this mechanism can accurately limit the locking latch's position on the trip latch in the closed state, avoiding problems such as unstable locking or accidental tripping caused by excessive spring preload.

Description

Technical Field

[0001] This application relates to the field of disconnector technology, and more specifically, to a remote tripping mechanism and a disconnector. Background Technology

[0002] Currently, conventional disconnector remote tripping mechanisms on the market mainly rely on a single spring to achieve the locking function. To ensure stability after closing, this structure usually requires a large spring preload. However, excessive preload leads to a greater driving force required for tripping, resulting in excessive load on the trip unit and easy damage.

[0003] Since there is no booster or unloading structure, the spring resistance during the tripping process must be fully borne by the trip unit, which increases the difficulty of operation and can easily cause problems such as action jamming and coil burnout, affecting the reliability and lifespan of the equipment.

[0004] In addition, the spring preload of the existing mechanism is fixed and cannot be adaptively adjusted according to actual working conditions (such as re-locking, release, etc.), resulting in insufficient locking or difficulty in release, and posing a risk of accidental release and release failure.

[0005] Therefore, there is a contradiction between the stability and low-force tripping requirements of traditional remote tripping mechanisms, making it difficult to meet the requirements of modern power systems for intelligent, efficient, and energy-saving control, and thus requiring urgent improvement. Summary of the Invention

[0006] The purpose of this application is to provide a remote tripping mechanism and disconnecting switch, which enables the disconnecting switch to be in a stable locked state, effectively avoiding the problem of accidental tripping caused by equipment vibration and external interference.

[0007] To achieve the above objectives, a remote tripping mechanism is proposed, comprising: Mounting rack; The switch shaft is rotatably connected to the mounting bracket. The trip button is connected to the switch shaft; The latch is rotatably connected to the mounting bracket; A limiting mechanism is connected to the mounting bracket and abuts against the latch to limit the latch's movement relative to the jump buckle.

[0008] In one embodiment, the limiting mechanism includes: The traction rod is connected to the mounting bracket; A release push rod is rotatably connected to the mounting bracket, and the initial position of the release push rod is abutting against the latch; A traction torsion spring is coaxially arranged with the rotation point of the traction rod, and the two ends of the traction torsion spring abut against the release push rod and the traction rod, respectively.

[0009] In one embodiment, the limiting mechanism further includes a trip unit with a lever connected to it, the lever being located between the traction rod and the trip push rod.

[0010] In one embodiment, the trip unit is electrically connected to the lever, which moves between the traction rod and the trip push rod.

[0011] In one embodiment, the traction rod includes a pushing section and a connecting section, the connection point between the traction rod and the mounting frame is a rotating section, and the connecting section and the rotating section are coaxially arranged. The traction torsion spring is sleeved on the outside of the connecting section, and the pushing section is located on the moving path of the lever.

[0012] In one embodiment, the release push rod has a connection port, and the end of the traction torsion spring extends into the connection port.

[0013] In one embodiment, the release push rod further has a first abutment point, and the latch has a second abutment point. The latch is limited by the mutual abutment of the first abutment point and the second abutment point.

[0014] In one embodiment, the jump buckle has a first limiting point, and the latch has a second limiting point on the side of the jump buckle near the jump buckle. The first limiting point and the second limiting point abut against each other to limit the jump buckle.

[0015] In one embodiment, the release mechanism further includes a push torsion spring connected to the mounting bracket. After the release push rod releases the limit on the latch, the push torsion spring drives the latch to disengage from the release buckle.

[0016] A disconnect switch, comprising a remote tripping mechanism as described in any of the preceding claims.

[0017] Through the above technical solution, this remote tripping mechanism effectively resolves the contradiction between stability and tripping resistance caused by the single spring preload in traditional structures, thanks to its innovative limit mechanism design. Compared with existing technologies, this mechanism can precisely limit the locking action of the latch on the tripping latch in the closed state, avoiding instability or accidental tripping caused by excessive spring preload. Simultaneously, during the tripping process, the mechanical cooperation of the limit mechanism can share the locking resistance of the latch, significantly reducing the load on the trip unit and improving the sensitivity and reliability of the tripping action.

[0018] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the disconnecting switch provided in an embodiment of this application; Figure 2 A schematic diagram of the tripping mechanism provided in an embodiment of this application; Figure 3 Provided for the embodiments of this application Figure 2 Enlarged view of point A in the image; Figure 4 A side view of the tripping mechanism provided in an embodiment of this application; Figure 5 Provided for the embodiments of this application Figure 4 Enlarged view of point B in the image; Figure 6 This is a schematic diagram of the position of the jump buckle provided in an embodiment of this application; Figure 7 Provided for the embodiments of this application Figure 6 Enlarged view of point C in the image; Figure 8 Provided for the embodiments of this application Figure 1 Enlarged view of point D in the image.

[0021] Icons: 100-Mounting bracket; 101-Switch shaft; 200-Traction rod; 201-Connecting section; 202-Traction torsion spring; 203-Push section; 300-Trigger; 301-Lever; 400-Trigger push rod; 401-First contact point; 402-Connecting port; 500-Lock; 501-Second contact point; 502-Second limit point; 503-Push torsion spring; 600-Trigger; 601-First limit point. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] A remote tripping mechanism includes a mounting bracket 100, a switch shaft 101, a trip latch 600, a locking latch 500, and a limiting mechanism. The switch shaft 101 is rotatably connected to the mounting bracket 100; the trip latch 600 is connected to the switch shaft 101; the locking latch 500 is rotatably connected to the mounting bracket 100; and the limiting mechanism is connected to the mounting bracket 100 and abuts against the locking latch 500 to limit the locking latch 500's movement relative to the trip latch 600.

[0026] Reference Figure 1 and Figure 2 The remote tripping mechanism mainly includes a mounting frame 100, a switch shaft 101, a trip latch 600, a locking latch 500, and a limiting mechanism. The mounting frame 100 serves as the base of the entire mechanism, fixing and supporting other components while providing guidance and stability for mechanical movement. The switch shaft 101 is rotatably connected to the mounting frame 100, controlling the transition of the trip latch 600 between the closed and tripped states. The trip latch 600, connected to the switch shaft 101, primarily works in conjunction with the locking latch 500 to lock or release the main contacts. The locking latch 500 is rotatably connected to the mounting frame 100 and, when normally in the closed state, limits the trip latch 600 to prevent accidental disconnection. The limiting mechanism is connected to the mounting frame 100 and abuts against the locking latch 500. Through its structural features, it adjusts the limiting effect between the locking latch 500 and the trip latch 600, thereby optimizing the configuration of closing stability and tripping convenience.

[0027] In the closed state, the limit mechanism effectively restricts the movement range of the latch 500, ensuring that the main contacts remain in a stable closed state, thus enhancing the safety and reliability of the equipment during actual operation. During the tripping process, the limit mechanism, in coordination with the latch 500, adjusts its restriction on the tripping latch 600, reducing the tripping force and making the tripping action smoother and more efficient. This avoids problems such as excessive load on the trip unit and insensitive operation caused by excessive preload of the traction torsion spring 202.

[0028] This mechanism achieves a dynamic balance between locking and tripping through optimized structural design. Unlike traditional structures that rely on a single spring for locking, this solution uses a limiting mechanism to make the limiting relationship between the locking and tripping latches more controllable and stable. This approach not only improves the reliability of locking but also significantly reduces the driving force required during tripping, reducing the load pressure on the trip unit, thereby extending the service life of the equipment and improving the overall system operating efficiency.

[0029] Reference Figure 8 In some embodiments, the limiting mechanism includes a traction rod 200, a release push rod 400, and a traction torsion spring 202. The traction rod 200 is connected to the mounting frame 100; the release push rod 400 is rotatably connected to the mounting frame 100, and the initial position of the release push rod 400 abuts against the latch 500; the traction torsion spring 202 is coaxially arranged with the rotation point of the traction rod 200, and both ends of the traction torsion spring 202 abut against the release push rod 400 and the traction rod 200, respectively.

[0030] Reference Figure 3 and Figure 4 In some embodiments, the limiting mechanism further includes a trip unit 300, on which a lever 301 is connected, the lever 301 being located between the traction rod 200 and the trip push rod 400.

[0031] When the trip unit is in the reset state, the lever 301 moves towards the traction lever 200, which stretches and stores the torsion spring 202 and applies a continuous locking force to the trip push rod 400, so that the trip push rod 400 is stably locked and the latch is securely locked, thus achieving reliable re-locking of the mechanism.

[0032] When the switch is remotely tripped, the trip unit 300 drives the lever 301 to swing in the opposite direction and pushes the tripping point of the tripping push rod 400. The traction point of the traction rod 200 actively approaches the tripping point under the action of the traction torsion spring 202, providing synchronous boosting force for the tripping action of the lever.

[0033] Reference Figure 5During the tripping action, lever 301 releases the pushing limit on traction rod 200, and tripping push rod 400 and traction rod 200 are in a free state. Traction torsion spring 202 releases the locking force on tripping push rod 400, and the locking force of tripping push rod 400 is reduced to the minimum, greatly reducing the overall tripping force of the mechanism.

[0034] By using the bidirectional adaptive force switching of the traction torsion spring 202, the mechanism achieves bidirectional working condition adaptation of high locking force and low resistance during release, taking into account both locking stability and release sensitivity.

[0035] In some embodiments, the limiting mechanism comprises a traction rod 200, a tripping push rod 400, and a traction torsion spring 202 to control and limit the tripping latch 600 between the closed and tripped states. The tripping push rod 400 is also rotatably connected to the mounting bracket 100 and initially contacts the latch 500, providing a limiting and locking function for the tripping latch 600, ensuring that the disconnecting switch or circuit breaker remains stably closed when closed. The traction torsion spring 202 is coaxially arranged with the rotation center of the traction rod 200, with one end contacting the tripping push rod 400 and the other end contacting the traction rod 200. Its elasticity controls the tripping push rod 400, keeping it locked when closed and freely released when tripped.

[0036] To further improve the control accuracy and operational safety of remote tripping, the limit mechanism is also equipped with a trip unit 300, which is integrated with the remote control system and used to trigger the tripping action. The trip unit 300 is equipped with a lever 301, which is positioned between the traction rod 200 and the tripping push rod 400, facilitating effective control of both during operation. When the trip unit is in the reset state, the lever 301 applies a certain pushing force to the traction rod 200, causing its traction point to move away from the tripping push rod 400. This action causes the traction torsion spring 202 to be stretched and stored, while simultaneously providing a continuous locking force to the tripping push rod 400, enabling it to stably contact and limit the locking latch 500, thereby ensuring that the tripping latch 600 is reliably locked in the closed state.

[0037] When a remote tripping operation is performed, the trip unit 300 is triggered, causing the lever 301 to swing in the opposite direction, which in turn pushes the tripping push rod 400 away from the limiting point within the latch 500, thereby releasing the locking state of the tripping latch 600. Simultaneously, as the traction torsion spring 202 releases its elastic potential energy, it causes the traction point of the traction rod 200 to actively move towards the tripping point of the tripping push rod 400, providing a synchronous thrust for the displacement of the tripping push rod 400. This design effectively coordinates the movements of the tripping push rod 400 and the traction rod 200, improving the efficiency and stability of the tripping process.

[0038] During the tripping action, lever 301 releases its limiting effect on traction rod 200, allowing traction rod 200 and tripping push rod 400 to enter a free-moving state. At this time, traction torsion spring 202 no longer applies locking force to tripping push rod 400, minimizing its locking force and significantly reducing the driving force required for the overall tripping of the mechanism, making the tripping action more sensitive and smooth. This design avoids the problem of tripping difficulties or sluggish operation caused by excessive friction between the locking and tripping latches in traditional structures.

[0039] By utilizing the bidirectional force characteristics of the traction torsion spring 202, this limiting mechanism achieves adaptive switching between closing and tripping conditions. During re-closing, the traction torsion spring applies a large locking force to the tripping push rod, ensuring stable engagement of the tripping latch and enhancing locking reliability. In the tripping state, the traction torsion spring releases its accumulated elastic potential energy, reducing the locking force on the tripping push rod, making it easier for the push rod to disengage from the latch, thus achieving low-resistance, high-sensitivity tripping operation. This bidirectional adaptive structural design balances locking stability and the ease of tripping action, providing better assurance for long-distance, rapid, and safe disconnection operations.

[0040] In some embodiments, the trip unit 300 is electrically connected to the lever 301 to enable remote operation, the lever 301 moving between the traction rod 200 and the trip push rod 400.

[0041] In some embodiments, the trip unit 300 and the lever 301 are electrically connected, enabling the system to respond to external signals and trigger a tripping operation via a remote control system. This electrical connection structure allows the trip unit 300 to accurately transmit the tripping command to the lever 301 without direct manual operation, causing it to move between the traction rod 200 and the tripping push rod 400. The movement of the lever 301 not only directly affects the position change of the tripping push rod 400, but also exerts a pushing and pulling effect on the traction rod 200 through its position adjustment, thereby changing the state of the traction torsion spring 202 and achieving precise control over the limiting relationship between the latch 500 and the trip 600. This electrical connection method enhances the system's response speed and control accuracy for remote operation, providing reliable technical support for realizing intelligent and automated power equipment control.

[0042] In some embodiments, the traction rod 200 includes a pushing section 203 and a connecting section 201. The connection point between the traction rod 200 and the mounting bracket 100 is a rotating section. The connecting section 201 and the rotating section are coaxially arranged. The traction torsion spring 202 is sleeved on the outside of the connecting section 201. The pushing section 203 is located on the moving path of the lever 301.

[0043] In some embodiments, the traction rod 200 is designed with two structural parts: a pushing section 203 and a connecting section 201, wherein the connection point between the traction rod and the mounting bracket 100 is a rotating section. The connecting section 201 and the rotating section are coaxial, allowing the traction rod 200 to rotate around its central axis, ensuring the stability and accuracy of its movement trajectory. The traction torsion spring 202 is sleeved on the outside of the connecting section 201, providing necessary elastic support to maintain the traction rod 200 at appropriate angles and positions under different working conditions; it can also influence the relative motion relationship between the traction rod 200 and the tripping push rod 400 through its own deformation and release. The pushing section 203 is arranged on the moving path of the lever 301, enabling it to directly contact or cooperate with the lever 301, thereby improving the synchronization and control accuracy of the action during the tripping process.

[0044] In some embodiments, the release push rod 400 has a connection port 402, and the end of the traction torsion spring 202 extends into the connection port 402.

[0045] In some embodiments, the release push rod 400 is provided with a connection port 402, and one end of the traction torsion spring 202 extends into the connection port, thereby achieving a tight fit and stable connection with it. This connection method ensures that the traction torsion spring 202 is fixed and supported on the release push rod 400, preventing displacement or detachment during movement. On the other hand, it also allows the traction torsion spring 202 to more effectively transmit elastic force to the release push rod, thereby controlling its locking or releasing of the latch 500.

[0046] In some embodiments, the release push rod 400 further has a first abutment point 401, and the latch 500 has a second abutment point 501. The latch 500 is limited by the mutual abutment of the first abutment point 401 and the second abutment point 501.

[0047] Reference Figure 5 and Figure 6 In some embodiments, the tripping push rod 400 is further provided with a first abutment point 401, which forms a contact engagement with a second abutment point 501 on the latch 500. Through the mutual abutment between these two abutment points, the tripping push rod can apply an effective limiting effect to the latch 500, keeping it stably embedded in the closed state. This improves the locking reliability of the mechanism when the circuit is closed and enhances the mechanical stability and operational accuracy of the limiting mechanism.

[0048] Reference Figure 7In some embodiments, the snap fastener 600 has a first limiting point 601, and the latch 500 has a second limiting point 502 on the side near the snap fastener 600. The first limiting point 601 and the second limiting point 502 abut against each other to limit the snap fastener 600 by the latch 500.

[0049] In some embodiments, the trip latch 600 has a first limiting point 601, while the latch 500 has a second limiting point 502 on the side near the trip latch. These two limiting points abut against each other, thus limiting the trip latch's position and preventing it from accidentally disengaging from the closed position without being triggered. This dual-point limiting design helps improve the connection strength between the latch and the trip latch, enhances the locking performance of the system in the closed state, and avoids accidental disengagement due to vibration, external force, or other factors, thereby improving the safety and operational reliability of the device.

[0050] Reference Figure 4 In some embodiments, the release mechanism further includes a pusher torsion spring 503 connected to the mounting bracket 100. After the release push rod 400 releases the limit on the latch 500, the pusher torsion spring 503 drives the latch 500 to disengage from the release buckle 600.

[0051] In some embodiments, the tripping mechanism further includes a pusher torsion spring 503 connected to the mounting bracket 100. Its main function is to drive the disengagement of the latch 500 from the jumper 600 after the tripping push rod 400 releases its restraint on the latch 500. Once the tripping process is complete, the tripping push rod 400 no longer applies pressure to the latch 500, and the pusher torsion spring 503, under its own elastic force, pushes the latch 500 in the disengagement direction, thereby releasing and disconnecting the jumper 600. This design further improves the operation flow of the tripping mechanism, ensuring that the latch 500 can quickly and smoothly separate from the jumper 600 after tripping, improving the efficiency and reliability of the tripping action, and avoiding tripping failure due to mechanical jamming or insufficient force.

[0052] A disconnect switch includes the aforementioned remote tripping mechanism.

[0053] This disconnecting switch, by integrating the aforementioned remote tripping mechanism, possesses the function of accurately and rapidly tripping trip 600 under remote control. The core structure of the remote tripping mechanism includes components such as the traction rod 200, the tripping push rod 400, the traction torsion spring 202, the trip unit 300, and the lever 301 on it. It can provide stable locking for trip 600 when the circuit is closed, ensuring that the disconnecting switch is in a reliable closed state; and when the remote tripping operation is triggered, it can quickly release the locking force, reduce the tripping resistance, and effectively push trip 600 out of the locking latch 500 to achieve the disconnection operation.

[0054] The tripping push rod 400 and the latch 500 are engaged through the contact of the first contact point 401 and the second contact point 501, thereby limiting and locking the tripping latch 600. The first limiting point 601 on the tripping latch 600 and the second limiting point 502 on the latch 500 also form a tight fit, further enhancing the stability of the locking and preventing malfunction. When the tripping push rod 400 releases the limiting effect on the latch 500, the torsion spring 503 drives the latch 500 to move in the tripping direction under the action of a preset elastic force, ensuring that the tripping latch 600 disengages smoothly, thus completing the entire disconnection process.

[0055] This structural design enables the disconnecting switch to not only have good closing stability but also efficient remote tripping response capability, which can meet the requirements of modern power systems for remote, intelligent, and safe equipment operation. While improving the convenience of operation, it also enhances the safety and reliability of the system, and is suitable for scenarios such as power distribution systems, substations, and power supply lines that require remote control and protection.

[0056] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0057] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A remote tripping mechanism, characterized in that, include: Mounting bracket (100); The switch shaft (101) is rotatably connected to the mounting bracket (100); A trip button (600) is connected to the switch shaft (101); The latch (500) is rotatably connected to the mounting bracket (100); A limiting mechanism is connected to the mounting bracket (100) and abuts against the latch (500) to limit the latch (500) from the jumper (600).

2. The remote tripping mechanism according to claim 1, characterized in that, The limiting mechanism includes: The traction rod (200) is connected to the mounting bracket (100); A release push rod (400) is rotatably connected to the mounting bracket (100), and the initial position of the release push rod (400) abuts against the latch (500); The traction torsion spring (202) is coaxially arranged with the rotation point of the traction rod (200), and the two ends of the traction torsion spring (202) abut against the release push rod (400) and the traction rod (200) respectively.

3. The remote tripping mechanism according to claim 2, characterized in that, The limiting mechanism also includes a trip unit (300), on which a lever (301) is connected, the lever (301) being located between the traction rod (200) and the trip push rod (400).

4. The remote tripping mechanism according to claim 3, characterized in that, The trip unit (300) is electrically connected to the lever (301), which moves between the traction rod (200) and the trip push rod (400).

5. The remote tripping mechanism according to claim 4, characterized in that, The traction rod (200) includes a pushing section (203) and a connecting section (201). The connection point between the traction rod (200) and the mounting bracket (100) is a rotating section. The connecting section (201) and the rotating section are coaxially arranged. The traction torsion spring (202) is sleeved on the outside of the connecting section (201), and the pushing section (203) is located on the moving path of the lever (301).

6. The remote tripping mechanism according to claim 2, characterized in that, The release push rod (400) has a connection port (402), and the end of the traction torsion spring (202) extends into the connection port (402).

7. The remote tripping mechanism according to claim 2, characterized in that, The release push rod (400) also has a first abutment point (401), and the latch (500) has a second abutment point (501). The latch (500) is limited by the mutual abutment of the first abutment point (401) and the second abutment point (501).

8. The remote tripping mechanism according to claim 1, characterized in that, The jump buckle (600) has a first limiting point (601), and the latch (500) has a second limiting point (502) on the side near the jump buckle (600). The first limiting point (601) and the second limiting point (502) abut against each other to limit the jump buckle (600) by the latch (500).

9. The remote tripping mechanism according to claim 2, characterized in that, The release mechanism also includes a push torsion spring (503), which is connected to the mounting bracket (100). After the release push rod (400) releases the limit on the latch (500), the push torsion spring (503) drives the latch (500) to disengage from the release buckle (600).

10. A disconnecting switch, characterized in that, Includes the remote tripping mechanism as described in any one of claims 1-9.

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