Emergency tripping device for mid-position switch cabinet

Abstract

The application discloses an emergency tripping device of a centrally installed switch cabinet and relates to the technical field of switch cabinets. The emergency tripping device of the centrally installed switch cabinet comprises a supporting device installed on a cabinet door of the switch cabinet, a push rod slidingly installed on the supporting device, a transmission rod rotationally installed on the supporting device and a driving mechanism. The driving mechanism comprises a driving piece and an actuating piece. The driving piece is fixed to the push rod, and the actuating piece is fixed to the transmission rod. The driving piece is provided with a driving slope. The driving slope is in sliding fit with the actuating piece. When the driving slope is driven to slide along the push rod in the axial direction, the driving slope can exert a driving force extending along the transmission rod in the circumferential direction on the actuating piece. Thus, the actuating piece is driven to slide along the driving slope to drive the transmission rod to rotate. Then, the linear thrust force of the transmission rod is converted into the rotary torque of the transmission rod, which is transmitted to the closing and opening knob of the circuit breaker to trigger the circuit breaker to trip and open, thereby improving the efficiency of triggering the circuit breaker to trip and open.

Description

Technical Field

[0001] This invention relates to the field of switchgear technology, and in particular to an emergency tripping device for a centrally located switchgear. Background Technology

[0002] 12kV medium-voltage switchgear is a core device in power systems for power distribution, control, and protection. It is widely used in substations, industrial and mining enterprises, and commercial buildings. Its operational safety and reliability are crucial to the stability of power supply. Among the core control components of 12kV medium-voltage switchgear, the circuit breaker plays a key role in circuit switching and fault tripping. To adapt to different operating scenarios, some circuit breakers use a rotary knob instead of a push button, achieving closing and opening control through circular rotation around its own axis. The mechanical emergency trip device, an essential safety component of 12kV medium-voltage switchgear, functions to manually apply mechanical force to trigger the circuit breaker's tripping action when emergency faults such as short circuits, overloads, and electrical protection failures occur in the power grid, cutting off the faulty circuit and preventing the accident from escalating.

[0003] The design of existing mechanical emergency tripping devices is based on the principle of linear action, that is, the tripping force is transmitted through the linear reciprocating motion of components such as push rods and pull rods. This design can only be adapted to circuit breakers that use closing and opening buttons. That is, the circuit breaker with the closing and opening button can be triggered to trip and open by a linear pressing action, which is completely matched with the linear action form of the emergency tripping device.

[0004] However, for circuit breakers that use opening and closing knobs, the existing emergency tripping devices require rotational torque to drive the knob because the knob's movement trajectory is circular. The linear thrust output by the emergency tripping device cannot be directly converted into the rotational torque required by the knob. If the linear action is forcibly applied to the knob, it will cause uneven force on the knob, resulting in problems such as jamming and insufficient rotation angle. Not only will it fail to trigger the tripping, but it may also damage the knob structure. Summary of the Invention

[0005] (I) Purpose of the Invention

[0006] The purpose of this invention is to provide an emergency tripping device for a centrally located switchgear, which aims to solve the technical problem that the emergency tripping device in the prior art cannot be directly coordinated with the closing and opening knobs.

[0007] (II) Technical Solution

[0008] To solve the above problems, the present invention proposes an emergency tripping device for a centrally located switchgear, comprising: a support device installed on the cabinet door of the switchgear, a push rod slidably installed on the support device, and a transmission rod rotatably installed on the support device;

[0009] A driving mechanism includes a driving component and an actuator. The driving component is fixedly connected to the push rod, and the actuator is fixedly connected to the transmission rod. The driving component has a driving inclined surface, which slides in cooperation with the actuator. This allows the driving inclined surface to slide along the axial direction of the push rod under the drive of the push rod, while simultaneously applying a driving force extending circumferentially along the transmission rod to the actuator. This enables the actuator to slide along the driving inclined surface to rotate the transmission rod.

[0010] In one embodiment, the driving ramp extends from the bottom to the top of the ramp in a direction opposite to the rotation direction of the transmission rod, so that the driving member can drive the actuator to slide counterclockwise along the driving ramp, thereby causing the transmission rod to rotate counterclockwise.

[0011] In one embodiment, the driving inclined surface includes a first driving surface and a second driving surface, and the driving member includes a first driving part and a second driving part. The first driving part and the second driving part are equally spaced along the axial direction of the push rod. One end of the first driving part is fixedly connected to the push rod, and the other end of the first driving part is provided with the first driving surface. One end of the second driving part is fixedly connected to the push rod, and the other end of the second driving part is provided with the second driving surface. The first driving surface and the second driving surface have opposite inclination directions. The first driving surface and the second driving surface are respectively slidably engaged with the actuator so that the actuator slides counterclockwise along the first driving surface and the second driving surface, thereby driving the transmission rod to rotate counterclockwise.

[0012] In one embodiment, the actuator includes a first actuating part and a second actuating part, both of which are fixedly connected to the transmission rod and are distributed at equal intervals along the axial direction of the transmission rod. The first actuating part is slidably engaged with the first driving surface, and the second actuating part is slidably engaged with the second driving surface.

[0013] In one embodiment, the driving ramp is an arc-shaped ramp, and the arc-shaped ramp is in sliding engagement with the actuator.

[0014] In one embodiment, the support device includes a support base and a support frame rotatably mounted on the support base. The support frame includes a support plate, a first positioning plate, and a second positioning plate. The first positioning plate and the second positioning plate are both fixedly connected to the support plate and are spaced apart along the axial direction of the push rod and the transmission rod. The first positioning plate has a first positioning hole for the push rod to pass through, and the push rod is slidably engaged with the wall of the first positioning hole. The second positioning plate has a second positioning hole for the transmission rod to pass through, and the transmission rod is rotatably engaged with the wall of the second positioning hole.

[0015] In one embodiment, the outer peripheral wall of the push rod is square, and the first positioning hole is a square hole corresponding to the shape of the outer peripheral wall of the push rod. The push rod is clearance-fitted with the first positioning hole so that the push rod can slide along the first positioning hole.

[0016] In one embodiment, the outer peripheral wall of the transmission rod is circular, and the second positioning hole is a circular hole corresponding to the outer peripheral wall of the transmission rod. The inner diameter of the second positioning hole is larger than the outer diameter of the transmission rod, and the transmission rod can rotate along the second positioning hole.

[0017] In one embodiment, the emergency tripping device of the centrally located switchgear further includes an operating knob, a compression elastic element, and an operating button. The operating knob is rotatably mounted on the support base. The compression elastic element is connected to both the operating knob and the support frame. When the operating knob is in the working state, the support frame can rotate under the drive of the operating knob. When the operating knob is not in the working state, the support frame can return to its initial position under the elastic force of the compression elastic element. The operating button is slidably sleeved inside the operating knob and extends axially along the push rod. The operating knob and the push rod are in clearance fit at the end opposite to the transmission rod, so that the push rod slides along the first positioning hole under the drive of the operating button.

[0018] In one embodiment, the emergency tripping device of the centrally located switchgear further includes a torsional elastic element, which is connected to the transmission rod and the cabinet door of the switchgear respectively, so that the transmission rod can return to its initial position under the elastic force of the torsional elastic element.

[0019] In one embodiment, the emergency tripping device of the centrally located switchgear further includes a first limiting member and a second limiting member. The first limiting member is fixedly disposed on the second positioning plate and extends away from the push rod. The second limiting member is fixedly disposed on the outer peripheral wall of the transmission rod and extends in a direction perpendicular to the outer peripheral wall of the transmission rod. The first limiting member and the second limiting member abut against each other to restrict the rotation of the transmission rod.

[0020] In one embodiment, the emergency tripping device of the centrally located switchgear further includes a mating component, which is fixedly connected to the end of the transmission rod opposite to the push rod.

[0021] (III) Beneficial Effects

[0022] The above-mentioned technical solution of the present invention has the following beneficial technical effects: The technical solution of the present invention adopts a sliding engagement between a driving inclined surface and an actuator, so that while the driving inclined surface slides along the axial direction of the push rod under the drive of the push rod, it can apply a driving force extending circumferentially along the transmission rod to the actuator, thereby enabling the actuator to slide along the driving inclined surface to drive the transmission rod to rotate, thereby converting the linear thrust of the transmission rod into the rotational torque of the transmission rod, and then applying the rotational torque to the circuit breaker's opening and closing knobs, thereby triggering the circuit breaker to trip and quickly disconnect the fault circuit, which is beneficial to improving the operational efficiency of triggering the circuit breaker to trip and open. Attached Figure Description

[0023] Figure 1 This is a first-view structural schematic diagram of an embodiment of the emergency tripping device for a centrally located switchgear provided by the present invention.

[0024] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0025] Figure 3 A second-view structural schematic diagram of an embodiment of the emergency tripping device for a centrally located switchgear provided by the present invention.

[0026] Figure 4 This is a schematic diagram of the structure of the emergency tripping device of the centrally located switchgear provided by the present invention in conjunction with the closing and opening knobs of the circuit breaker.

[0027] Figure label:

[0028] 1. Support device; 101. Support base; 102. Support frame; 1021. Support plate; 1022. First positioning plate; 1023. Second positioning plate; 2. Push rod; 3. Transmission rod; 4. Drive mechanism; 401. Drive component; 4011. First drive part; 4012. Second drive part; 402. Drive inclined surface; 4021. First drive surface; 4022. Second drive surface; 403. Actuator; 4031. First actuating part; 4032. Second actuating part; 5. Operating knob; 6. Operating button; 7. First limiting component; 8. Second limiting component; 9. Mating component; 10. Buffer pad; 11. Closing / opening knob. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0030] The embodiments described in this invention are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention. In the description of this invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] 12kV medium-voltage switchgear is a core device in power systems for power distribution, control, and protection. It is widely used in substations, industrial and mining enterprises, and commercial buildings. Its operational safety and reliability are crucial to the stability of power supply. Among the core control components of 12kV medium-voltage switchgear, the circuit breaker plays a key role in circuit switching and fault tripping. To adapt to different operating scenarios, some circuit breakers use a rotary knob instead of a push button, achieving closing and opening control through circular rotation around its own axis. The mechanical emergency trip device, an essential safety component of 12kV medium-voltage switchgear, functions to manually apply mechanical force to trigger the circuit breaker's tripping action when emergency faults such as short circuits, overloads, and electrical protection failures occur in the power grid, cutting off the faulty circuit and preventing the accident from escalating.

[0032] The design of existing mechanical emergency tripping devices is based on the principle of linear action, that is, the tripping force is transmitted through the linear reciprocating motion of components such as push rods and pull rods. This design can only be adapted to circuit breakers that use closing and opening buttons. That is, the circuit breaker with the closing and opening button can be triggered to trip and open by a linear pressing action, which is completely matched with the linear action form of the emergency tripping device.

[0033] However, for circuit breakers that use opening and closing knobs, the existing emergency tripping devices require rotational torque to drive the knob because the knob's movement trajectory is circular. The linear thrust output by the emergency tripping device cannot be directly converted into the rotational torque required by the knob. If the linear action is forcibly applied to the knob, it will cause uneven force on the knob, resulting in problems such as jamming and insufficient rotation angle. Not only will it fail to trigger the tripping, but it may also damage the knob structure.

[0034] To address this technical problem, the present invention proposes an emergency tripping device for a centrally located switchgear.

[0035] Please see Figure 1 and Figure 2In one embodiment of the present invention, the emergency tripping device of the centrally located switchgear includes a support device 1, which is mounted on the cabinet door of the switchgear. Specifically, the support device 1 can be mounted on the cabinet door of the switchgear by bolt connection or by welding, which is not limited here. The emergency tripping device of the centrally located switchgear also includes a push rod 2 slidably mounted on the support device 1 and a transmission rod 3 rotatably mounted on the support device 1. Specifically, the push rod 2 can be slidably mounted on the support device 1 by sliding rail and groove cooperation or by linear bearing, which is not limited here. The transmission rod 3 can be rotatably mounted on the support device 1 by rolling bearing or by sliding bearing, which is not limited here. The emergency tripping device of the centrally located switchgear also includes a drive mechanism 4, which includes a drive component 401 and an actuator 403. The drive component 401 is fixedly connected to the push rod 2. Specifically, the drive component 401 can be fixedly connected to the push rod 2 by bolt connection or by welding, which is not limited here. The actuator 403 is fixedly connected to the transmission rod 3. Specifically, the actuator 403 can be fixedly connected to the transmission rod 3 via a key connection or a pin connection; this is not limited here. The drive member 401 is provided with a drive ramp 402, which slides in cooperation with the actuator 403. This allows the drive ramp 402 to slide along the axial direction of the push rod 2 under the drive of the push rod 2, while simultaneously applying a driving force extending circumferentially along the transmission rod 3 to the actuator 403. This enables the actuator 403 to slide along the drive ramp 402 to drive the transmission rod 3 to rotate. Specifically, the sliding cooperation between the drive ramp 402 and the actuator 403 can be a planar contact sliding or a sliding cooperation between a slider and a groove; this is not limited here.

[0036] Please see Figure 1 , Figure 2 and Figure 4 The technical solution of the present invention employs a sliding engagement between a driving inclined surface 402 and an actuator 403. This allows the driving inclined surface 402 to slide along the axial direction of the push rod 2 under the drive of the push rod 2, while simultaneously applying a driving force extending circumferentially along the transmission rod 3 to the actuator 403. This enables the actuator 403 to slide along the driving inclined surface 402 to drive the transmission rod 3 to rotate, thereby converting the linear thrust of the transmission rod 3 into a rotational torque. This rotational torque is then applied to the circuit breaker's opening and closing knob 11, triggering the circuit breaker to trip and quickly disconnect the fault circuit, which is beneficial for improving the operational efficiency of triggering the circuit breaker to trip.

[0037] Please see Figure 1 , Figure 2 and Figure 4In one embodiment, the driving ramp 402 extends counterclockwise from its bottom to its top, opposite to the rotation direction of the transmission rod 3. This allows the driving member 401 to drive the actuator 403 to slide counterclockwise along the driving ramp 402, thereby causing the transmission rod 3 to rotate counterclockwise. Specifically, clockwise rotation of the existing circuit breaker's closing / opening knob 11 is typically a closing operation, switching the circuit breaker from the open (open) state to the closed state, restoring power to the circuit. Counterclockwise rotation is typically an opening operation, switching the circuit breaker from the closed (close) state to the open state, cutting off the circuit. Therefore, the transmission rod 3 needs to rotate counterclockwise to match the closing / opening knob 11, thereby driving the closing / opening knob 11 to rotate counterclockwise to trigger the circuit breaker to trip and disconnect the fault circuit to prevent the accident from escalating.

[0038] Please see Figure 2 In one embodiment, the driving inclined surface 402 includes a first driving surface 4021 and a second driving surface 4022, and the driving member 401 includes a first driving part 4011 and a second driving part 4012. The first driving part 4011 and the second driving part 4012 are equally spaced along the axial direction of the push rod 2. One end of the first driving part 4011 is fixedly connected to the push rod 2, and the other end of the first driving part 4011 is provided with a first driving surface 4021. One end of the second driving part 4012 is fixedly connected to the push rod 2, and the other end of the second driving part 4012 is provided with a second driving surface 4022. The first driving surface 4021 and the second driving surface 4022 are inclined in opposite directions. The first driving surface 4021 and the second driving surface 4022 are respectively slidably engaged with the actuator 403 so that the actuator 403 slides counterclockwise along the first driving surface 4021 and the second driving surface 4022, thereby driving the transmission rod 3 to rotate counterclockwise. By setting two driving parts and two corresponding driving ramps 402, the driving force can be distributed to different driving parts, thereby making the force transmission more balanced. This allows the actuator 403 to slide more smoothly along the driving surface, which helps to reduce friction and wear, and improve motion accuracy and response speed.

[0039] Please see Figure 2In one embodiment, the actuator 403 includes a first actuating part 4031 and a second actuating part 4032. Both the first actuating part 4031 and the second actuating part 4032 are fixedly connected to the transmission rod 3 and are evenly distributed along the axial direction of the transmission rod 3. The first actuating part 4031 is in sliding engagement with the first driving surface 4021, and the second actuating part 4032 is in sliding engagement with the second driving surface 4022. The sliding engagement of the first actuating part 4031 with the first driving surface 4021 and the second actuating part 4032 with the second driving surface 4022 ensures stable contact between the actuator 403 and the driving surface, reducing vibration or displacement that may be caused by uneven force, thereby improving the system's operational stability and accuracy, and helping to reduce friction and wear, enhancing the system's fault tolerance.

[0040] Please see Figure 2 In one embodiment, the driving ramp 402 is an arc-shaped ramp, which slides in engagement with the actuator 403. The sliding engagement between the arc-shaped ramp and the actuator 403 enables a more stable and uniform force transmission, which helps to reduce the problems of force concentration and uneven friction, thereby improving the smoothness and reliability of the actuator 403.

[0041] Please see Figure 1 and Figure 2 In one embodiment, the support device 1 includes a support base 101 and a support frame 102 rotatably mounted on the support base 101. The support frame 102 includes a support plate 1021, a first positioning plate 1022, and a second positioning plate 1023. Specifically, the support plate 1021 can be a U-shaped plate or an L-shaped plate, which is not limited here. The first positioning plate 1022 and the second positioning plate 1023 are both fixedly connected to the support plate 1021 and are distributed at intervals along the axial direction of the push rod 2 and the transmission rod 3. The first positioning plate 1022 has a first positioning hole for the push rod 2 to pass through, and the push rod 2 is slidably engaged with the wall of the first positioning hole. The second positioning plate 1023 has a second positioning hole for the transmission rod 3 to pass through, and the transmission rod 3 is rotatably engaged with the wall of the second positioning hole. This allows the push rod 2 and the transmission rod 3 to maintain a stable relative position and movement mode under different actions, thereby making the movement process of the push rod 2 and the transmission rod 3 more stable and improving the movement accuracy of the push rod 2 and the transmission rod 3.

[0042] Please see Figure 3 In one embodiment, the outer peripheral wall of the push rod 2 is square, and the first positioning hole is a square hole corresponding to the shape of the outer peripheral wall of the push rod 2. The push rod 2 and the first positioning hole are clearance-fitted so that the push rod 2 can slide along the first positioning hole. The fit between the square outer peripheral wall of the push rod 2 and the square hole helps to reduce the risk of swaying, so that the push rod 2 can move more smoothly along the axial direction when sliding.

[0043] Please see Figure 3In one embodiment, the outer peripheral wall of the transmission rod 3 is circular, and the second positioning hole is a circular hole corresponding to the outer peripheral wall of the transmission rod 3. The inner diameter of the second positioning hole is larger than the outer diameter of the transmission rod 3, allowing the transmission rod 3 to rotate along the second positioning hole. By rationally designing the fit between the circular transmission rod 3 and the circular positioning hole, the transmission rod 3 can rotate smoothly, while ensuring the accuracy and reliability of the system, and improving the overall performance and service life of the equipment.

[0044] Please see Figure 1 and Figure 3 In one embodiment, the emergency tripping device of the centrally located switchgear further includes an operating knob 5, a compression elastic element, and an operating button 6. The operating knob 5 is rotatably mounted on the support base 101, and the compression elastic element is connected to both the operating knob 5 and the support frame 102. When the operating knob 5 is in operation, the support frame 102 can rotate under the drive of the operating knob 5. When the operating knob 5 is not in operation, the support frame 102 can return to its initial position under the elastic force of the compression elastic element. The operating button 6 is slidably fitted inside the operating knob 5 and extends axially along the push rod 2, with a clearance fit between the operating knob 5 and the end of the push rod 2 opposite to the transmission rod 3, so that the push rod 2 slides along the first positioning hole under the drive of the operating button 6. Through the coordinated operation of the operating knob 5, the compression elastic element, and the operating button 6, not only is the ease of operation and safety of the emergency tripping device improved, but the stability and reliability of the system are also enhanced, ensuring accurate and rapid restoration to the preset state at critical moments.

[0045] Please see Figure 1 In one embodiment, the emergency tripping device of the centrally located switchgear further includes a torsional elastic element, which is connected to the transmission rod 3 and the switchgear door respectively, so that the transmission rod 3 can return to its initial position under the elastic force of the torsional elastic element. By providing the restoring force through the torsional elastic element, it is possible to ensure that the transmission rod 3 quickly returns to its initial position after the tripping operation, which helps to enhance the working efficiency and performance of the emergency tripping device.

[0046] Please see Figure 1 and Figure 2 In one embodiment, the emergency tripping device of the centrally located switchgear further includes a first limiting member 7 and a second limiting member 8. The first limiting member 7 is fixedly disposed on the second positioning plate 1023 and extends away from the push rod 2. The second limiting member 8 is fixedly disposed on the outer peripheral wall of the transmission rod 3 and extends in a direction perpendicular to the outer peripheral wall of the transmission rod 3. The first limiting member 7 and the second limiting member 8 abut against each other to restrict the rotation of the transmission rod 3, thereby helping to prevent the actuator 403 from slipping off the drive inclined surface 402 due to excessive rotation angle of the transmission rod 3 during the reset process.

[0047] Please see Figure 4In one embodiment, the emergency tripping device of the centrally located switchgear further includes a mating component 9, which is fixedly connected to the end of the transmission rod 3 opposite to the push rod 2. The mating component 9 can be tightly fitted with the closing / opening knob 11, thereby facilitating the application of the rotational torque of the transmission rod 3 to the closing / opening knob 11 of the circuit breaker, thus triggering the circuit breaker to trip and open.

[0048] Please see Figure 1 and Figure 4 In one embodiment, the emergency tripping device of the central switchgear also includes a buffer pad 10. The buffer pad 10 is located on the side of the support frame 102 facing away from the push rod 2 and the transmission rod 3, and can play a shock-absorbing and buffering role in the process of the support frame 102 returning to the initial position.

[0049] Please see Figure 1 , Figure 3 and Figure 4 In one specific embodiment of the present invention, rotating the operating knob 5 causes the support frame 102 to drive the rotating rod and transmission rod 3 to rotate, thereby keeping the axes of the rotating rod and transmission rod 3 collinear with the axis of the circuit breaker closing / opening knob 11, and making the mating part 9 engage with the circuit breaker closing / opening knob 11. Without releasing the operating knob 5, pressing the operating button 6 causes the push rod 2 to slide along the first positioning hole under the drive of the operating button 6, thereby driving the transmission rod 3 to rotate counterclockwise, and further driving the closing / opening knob 11 to rotate counterclockwise for tripping and opening. After the tripping and opening operation is completed, releasing the operating button 6 and the operating knob 5 causes the transmission rod 3 to return to its initial position under the elastic force of the torsional elastic element, and at the same time, the support frame 102 also returns to its initial position under the elastic force of the compression elastic element.

[0050] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. An emergency tripping device for a centrally located switchgear, characterized in that, include: A support device for the cabinet door of the switchgear, a push rod slidably mounted on the support device, a transmission rod rotatably mounted on the support device, and a drive mechanism; The support device includes a support base and a support frame rotatably mounted on the support base. The support frame includes a support plate, a first positioning plate, and a second positioning plate. The first positioning plate and the second positioning plate are both fixedly connected to the support plate and are distributed at intervals along the axial direction of the push rod and the transmission rod. The first positioning plate has a first positioning hole for the push rod to pass through. The emergency tripping device of the centrally located switchgear also includes an operating knob, a compression elastic element, and an operating button. The operating knob is rotatably mounted on the support base. The compression elastic element is connected to both the operating knob and the support frame. When the operating knob is in the working state, the support frame can rotate under the drive of the operating knob. When the operating knob is not in the working state, the support frame can return to its initial position under the elastic force of the compression elastic element. The operating button is slidably sleeved inside the operating knob and extends axially along the push rod. The operating knob and the push rod are clearance-fitted at the end opposite to the transmission rod, so that the push rod slides along the first positioning hole under the drive of the operating button. The driving mechanism includes a driving component and an actuator. The driving component is fixedly connected to the push rod, and the actuator is fixedly connected to the transmission rod. The driving component has a driving inclined surface, which slides in cooperation with the actuator. This allows the driving inclined surface to slide along the axial direction of the push rod under the drive of the push rod, while simultaneously applying a driving force extending circumferentially along the transmission rod to the actuator. This enables the actuator to slide along the driving inclined surface to rotate the transmission rod.

2. The emergency tripping device for a centrally located switchgear according to claim 1, characterized in that, The driving ramp extends from the bottom to the top of the ramp in the opposite direction to the rotation direction of the transmission rod, so that the driving member can drive the actuator to slide counterclockwise along the driving ramp, thereby causing the transmission rod to rotate counterclockwise.

3. The emergency tripping device for a centrally located switchgear according to claim 2, characterized in that, The driving inclined surface includes a first driving surface and a second driving surface. The driving member includes a first driving part and a second driving part. The first driving part and the second driving part are equally spaced along the axial direction of the push rod. One end of the first driving part is fixedly connected to the push rod, and the other end of the first driving part is provided with the first driving surface. One end of the second driving part is fixedly connected to the push rod, and the other end of the second driving part is provided with the second driving surface. The first driving surface and the second driving surface have opposite inclination directions. The first driving surface and the second driving surface are respectively slidably engaged with the actuator so that the actuator slides counterclockwise along the first driving surface and the second driving surface, thereby driving the transmission rod to rotate counterclockwise.

4. The emergency tripping device of the centrally located switchgear according to claim 3, characterized in that, The actuator includes a first actuating part and a second actuating part. The first actuating part and the second actuating part are both fixedly connected to the transmission rod and are distributed at equal intervals along the axial direction of the transmission rod. The first actuating part is slidably engaged with the first driving surface, and the second actuating part is slidably engaged with the second driving surface.

5. The emergency tripping device for a centrally located switchgear according to claim 1, characterized in that, The driving inclined surface is an arc-shaped inclined surface, and the arc-shaped inclined surface slides in conjunction with the actuator.

6. The emergency tripping device of the centrally located switchgear according to claim 1, characterized in that, The push rod slides in engagement with the wall of the first positioning hole, and the second positioning plate has a second positioning hole for the transmission rod to pass through, and the transmission rod rotates in engagement with the wall of the second positioning hole.

7. The emergency tripping device for a centrally located switchgear according to claim 6, characterized in that, The outer peripheral wall of the push rod is square, and the first positioning hole is a square hole corresponding to the shape of the outer peripheral wall of the push rod. The push rod is clearance-fitted with the first positioning hole so that the push rod can slide along the first positioning hole.

8. The emergency tripping device for a centrally located switchgear according to claim 6, characterized in that, The outer peripheral wall of the transmission rod is circular, and the second positioning hole is a circular hole corresponding to the outer peripheral wall of the transmission rod. The inner diameter of the second positioning hole is larger than the outer diameter of the transmission rod, and the transmission rod can rotate along the second positioning hole.

9. The emergency tripping device for a centrally located switchgear according to claim 6, characterized in that, The emergency tripping device of the centrally located switchgear also includes a torsional elastic element, which is connected to the transmission rod and the cabinet door of the switchgear respectively, so that the transmission rod can return to its initial position under the elastic force of the torsional elastic element; And / or, the emergency tripping device of the centrally located switchgear further includes a first limiting member and a second limiting member. The first limiting member is fixedly disposed on the second positioning plate and extends away from the push rod. The second limiting member is fixedly disposed on the outer peripheral wall of the transmission rod and extends in a direction perpendicular to the outer peripheral wall of the transmission rod. The first limiting member and the second limiting member abut against each other to restrict the rotation of the transmission rod.

10. The emergency tripping device for a centrally located switchgear according to any one of claims 1 to 9, characterized in that, The emergency tripping device of the centrally located switchgear also includes a mating component, which is fixedly connected to the end of the transmission rod opposite to the push rod.

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