Interlocking type hand-cranking propelling mechanism for drawer switch cabinet based on smart power grid

Abstract

The invention discloses an interlocking type hand-cranking propelling mechanism for a drawer switch cabinet based on a smart power grid, and relates to the technical field of hand-cranking propelling mechanisms for drawer switch cabinets, the interlocking type hand-cranking propelling mechanism comprises a drawer, a shaft rod in a first assembly, a rotating wheel and a second assembly, the second assembly comprises a limiting cavity channel formed in the rotating wheel, the rotating wheel is arranged on the shaft rod in a sliding and sleeving mode through the limiting cavity channel, and the end of the shaft rod is fixedly connected with a spring B. The second assembly accurately limits the rotating wheel, so that the problem that in the prior art, the rotating wheel rotates in an idle mode or rotates in a small range in a non-working state can be solved. After the operation is finished, the drawer can be stably kept at a preset extraction, isolation, experiment or connection station, displacement caused by mechanical defects, human negligence or environmental interference is avoided, the core pain point that the station is not matched with the circuit state is fundamentally solved, and the long-term stability of the position of the drawer under each station is ensured.

Description

Technical Field

[0001] This invention relates to the field of hand-cranked propulsion mechanisms for drawer switch cabinets, specifically an interlocking hand-cranked propulsion mechanism for drawer switch cabinets based on a smart grid. Background Technology

[0002] In the smart grid operation system, the drawer switchgear, as the core equipment for power distribution and control, directly affects the stability of power supply and the safety of operation and maintenance of the grid by switching the positions of its internal drawers. To achieve precise switching of the drawer between the four key positions of withdrawal, isolation, testing, and connection, existing technologies generally use a hand-cranked propulsion mechanism as the core actuator. Through a crank-driven transmission system, the drawer moves along the guide rail, and with the help of positioning and interlocking structures, the position is locked, ensuring that the circuit on / off state at each position is precisely matched with the equipment's operating requirements. This is an important mechanical support for ensuring the reliable operation of the power grid.

[0003] However, in practical applications, existing hand-cranked propulsion mechanisms are prone to transmission abnormalities when not in operation due to various factors. Specifically, after operation, the rotating wheel, which should remain stable through the positioning and locking mechanisms, often spins freely or rotates slightly due to human negligence or external environmental interference. Such abnormal rotation can directly cause the drawer to deviate from its preset position, disrupting the circuit's on / off logic. For example, if the drawer in the connecting position retracts slightly, it can cause poor contact at the main circuit contacts, leading to circuit overheating or arcing. If the drawer in the isolated position rotates unexpectedly, it can cause the secondary circuit to be mistakenly connected, posing a risk of electric shock to maintenance personnel. At the same time, abnormal rotation of the rotating wheel can also disrupt the interlocking mechanism, causing mechanical constraints to fail, increasing the probability of operation under load, and potentially leading to safety accidents such as equipment burnout and switch cabinet damage. In severe cases, it can even cause local power grid outages, affecting the stability of the power supply. In addition, existing hand-cranked propulsion mechanisms face the practical challenge of lubrication and maintenance of their transmission components. Because the drawer switchgear is constantly exposed to the heat generated by the electrical components, the lubricant on the surface of the transmission components is prone to evaporation, loss, or performance degradation due to high temperatures, leading to decreased lubrication effectiveness. In actual operation and maintenance, staff often forget to replenish or replace the lubricant in a timely manner due to the complexity of maintenance tasks and oversights in inspection cycles. Insufficient lubrication can cause significant jamming during operation, significantly increasing the resistance to cranking the handle. This not only affects the smoothness and accuracy of workstation switching but also accelerates the wear of transmission gears, lead screws, and guide rails, leading to a gradual decrease in transmission accuracy and shortening the overall service life of the mechanism. Long-term insufficient lubrication can also cause mechanical jamming of the transmission components, preventing normal workstation switching operations and forcing the switchgear to be shut down for maintenance, further increasing power grid maintenance costs and the risk of power outages.

[0004] In summary, existing hand-cranked propulsion mechanisms have significant shortcomings in transmission stability during non-operational states and in the lubrication and maintenance of transmission components. These issues have become key factors restricting the operational reliability of switchgear and threatening power grid safety. Therefore, the industry urgently needs a new type of hand-cranked propulsion mechanism with transmission component limit functions and auxiliary lubrication operations to address the deficiencies of existing technologies and improve the operational safety of switchgear and the stability of power grid operation.

[0005] Therefore, this invention proposes an interlocked hand-cranked propulsion mechanism for drawer switchgear based on smart grids to solve the above problems. Summary of the Invention

[0006] In view of this, an interlocked hand-cranked propulsion mechanism for drawer switchgear based on smart grid is proposed to solve the problems existing in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an interlocking hand-cranked propulsion mechanism for a drawer switch cabinet based on a smart grid, comprising: a drawer, and further comprising: a shaft, a rotating wheel, and a second component within a first component; The second component includes a limiting cavity formed in the rotating wheel, the rotating wheel being slidably sleeved on the shaft through the limiting cavity, a spring B being fixedly connected to the end of the shaft, and the end of the spring B away from the shaft being fixedly connected to the inner wall of the limiting cavity; An electrical contact A is fixedly connected to the center of the end of the shaft, an electrical contact B is fixedly connected to the inner wall of the rotating wheel, and an indicator light is provided on the outer wall of the drawer; A buckle piece is fixedly connected to the center of the outer end of the rotating wheel. An extension plate is provided on one side of the rotating wheel. A movable piece is vertically slidably connected to the extension plate through a slot. A transverse groove is symmetrically opened through the upper part of the movable piece. An anti-accidental touch groove is opened through the middle part of the movable piece. A spring C is fixedly connected to the upper part of the movable piece, and electrically controlled telescopic rods are symmetrically fixedly connected to the outer plate. An inclined block is fixedly connected to the output end of the electrically controlled telescopic rod.

[0008] Preferably, the first component further includes an auxiliary plate fixed inside the drawer, an interlocking plate is laterally slidably connected to the outer side of the auxiliary plate, and a spring A is fixedly connected to the side end of the interlocking plate; The outer end of the shaft is fixedly connected to a hexagonal operating hole component; The extension plate is fixedly connected to the auxiliary plate.

[0009] Preferably, the hexagonal operating hole component has teeth fixedly connected at equal intervals on the outer circumference of the annulus, and the hexagonal operating hole component is connected to a transmission gear through tooth meshing.

[0010] As a preferred option, a third component is also included; The third component includes a insertion tooth that is inserted into the tooth, and the insertion tooth has an annular groove inside; A hollow sleeve is fixedly connected to the inner cavity of the tooth, and the end of the hollow sleeve away from the fixed wall of the tooth slides in the annular groove.

[0011] Preferably, a spring D is fixedly connected to the inner wall of the tooth, and the end of the spring D away from the fixed wall of the tooth is fixedly connected to the insertion tooth. The hollow sleeve is fitted outside the spring D, and a cotton strip is placed on the outer periphery of the hollow sleeve and inside the tooth cavity; Oil drain holes are equidistantly opened on the teeth.

[0012] Preferably, the inner cavity of the tooth is filled with lubricating oil.

[0013] Preferably, the shaft consists of a column and a long strip.

[0014] Preferably, the buckle piece is composed of a round piece and a long strip, and the anti-accidental contact groove is composed of a circular through groove and a long through groove.

[0015] Compared with the prior art, the present invention provides an interlocked hand-cranked propulsion mechanism for a drawer switchgear based on a smart grid, which has the following advantages: 1. The design of the second component in this invention brings the following benefits: ensuring transmission stability in non-working states and eliminating the risk of workstation displacement: the second component, through precise limiting of the rotating wheel, can avoid the problem of "rotating wheel idling / small rotation in non-working states" in the prior art, so that the drawer can be stably maintained in the preset pull-out, isolation, test or connection workstation after the operation is completed, and will not be displaced due to mechanical defects, human negligence or environmental interference, fundamentally solving the core pain point of "mismatch between workstation and circuit state", and ensuring the long-term stability of the drawer position under each workstation; Maintaining the effectiveness of circuit switching logic and mitigating safety risks: Relying on the reliable limit of the rotating wheel, the drawer of the connecting station will not retract slightly, which can avoid problems such as circuit overheating and arc discharge caused by poor contact of the main circuit contacts; the drawer of the isolation station will not rotate accidentally, which can prevent the risk of electric shock to maintenance personnel caused by accidental connection of the secondary circuit, and at the same time avoid faults such as short circuits and component burnout caused by abnormal contacts, thus comprehensively ensuring the safe operation of the switch cabinet circuit and the safety of personnel operation and maintenance. Protecting the integrity of the interlocking mechanism and reducing the probability of equipment and power grid accidents: Abnormal rotation of the rotating wheel is a major cause of interlocking mechanism failure in existing technologies. The limiting function of the second component can prevent the rotating wheel from moving unexpectedly, ensuring that the positioning mechanism and interlocking structure are always in an effective working state and that the mechanical constraints do not fail. This significantly reduces the probability of operation under load, reduces the occurrence of safety accidents such as equipment burnout and switch cabinet damage, and avoids local power grid outages caused by switch cabinet failures, providing key support for the power supply stability of the smart grid.

[0016] 2. The design of the second component in this invention offers the following advantages: It constructs a dual physical safety barrier, significantly enhancing operational redundancy protection capabilities. Compared to the single restriction in existing technologies where "operation can proceed only by releasing the interlocking plate," the newly added rotating wheel limit design in the second component forms a dual physical barrier of "interlocking plate release + rotating wheel limit release." Even if one restriction fails due to mechanical wear, environmental interference, or accidental contact (such as the interlocking plate becoming stuck and accidentally moved), the other rotating wheel limit can still firmly lock the transmission system, preventing the start of workstation switching operations. Structurally, this avoids the hidden danger of "risk arising from the failure of a single protection," providing redundant protection for operational safety. Intercepting non-compliant operating procedures and reducing the risk of human error: The newly added rotating wheel limit step forces operators to complete the compliant action of "releasing the rotating wheel limit" after releasing the interlock plate before continuing operation. This design effectively intercepts non-compliant behaviors such as "starting operation directly after accidentally touching the interlock plate" and "switching workstations while ignoring prior safety checks (such as circuit breaker tripping status)." If operators do not confirm the equipment status according to the procedure and only remove the interlock plate, they will be unable to advance the equipment because the rotating wheel limit has not been released. This forces them to follow safe operating procedures and reduces the risk of switching under load or accidental workstation operation due to negligence. Strengthening the closed-loop logic of the interlocking mechanism avoids accidents caused by the failure of a single constraint: If the original single interlocking plate design has mechanical jamming, contact oxidation or other faults, it is easy to cause constraint failure, which in turn causes the rotating wheel to rotate unexpectedly and the work position to deviate. The dual-limit design of the second component makes the interlocking plate and the rotating wheel limit form a "cooperative interlocking" logic: the transmission system can only be started when both have completed the release action; if either link is not released or fails, the operation cannot be performed. The above-mentioned closed-loop logic can effectively avoid the problem of "the failure of a single interlocking component breaking through the safety line", ensuring that even if some components are abnormal, the equipment can still be maintained in a safe state through another layer of restriction, reducing the probability of circuit accidents caused by mechanical failure.

[0017] 3. The design of the shaft in this invention, which allows it to move laterally within the limiting cavity but cannot rotate axially, offers the following advantages: It simplifies the mechanical structure and reduces design and assembly complexity. The adaptable design of the shaft and the limiting cavity, integrating two functions into one component, eliminates the need for the traditional dual-component configuration of "independent transmission rod + independent limiting trigger rod." On one hand, this reduces the number of internal parts in the switchgear, saving limited installation space, and is particularly suitable for the "compact" design trend of smart grid drawer switchgear. On the other hand, the embedded design reduces the mating gaps between multiple components; that is, it reduces the likelihood of misalignment due to assembly errors in traditional dual-component systems, thus reducing the probability of mechanical failure from the source. Ensuring reliable dual-function collaboration and avoiding functional conflicts and failures: The shaft's "lateral movement without axial rotation" characteristic provides precise functional support for both working states and avoids interference between functions. During transmission station switching, because the shaft cannot rotate axially, the matching structure of its column rod and circular slot, and long plate and long slot, ensures stable torque transmission. When the crank drives the shaft to rotate, axial offset will not cause uneven force on the rotating wheel, ensuring transmission accuracy during station switching. When triggering the limit latch, the shaft's "non-axial rotation" characteristic during lateral movement ensures that the long plate always fits against the long slot of the limit cavity, preventing the latch trigger position from shifting due to shaft rotation. The two functions are achieved collaboratively based on the structural characteristics of the same shaft, eliminating the need for additional function switching mechanisms and avoiding the risk of delays or failures when switching between multiple mechanisms.

[0018] 4. This invention, by setting the limit opening and closing trigger of the rotating wheel within the process steps of cranking the handle, offers the following advantages: It constructs a continuous "operation-limit" action chain, eliminating the risk of forgetting due to process breaks: Embedding the limit opening and closing trigger of the rotating wheel within the process steps of cranking the handle creates an inseparable continuous action chain of "preparing to crank the handle → releasing / triggering the limit → switching the workstation." Compared to the existing design where "the limit trigger is independently set outside the drawer," operators do not need to switch operation scenarios or remember additional steps between cranking and limit operations. They can simply follow the natural flow of cranking to simultaneously complete the limit processing, fundamentally avoiding the problem of forgetting limit operations due to "process splitting and scenario switching." Reduce the burden of human memory and minimize operational oversights in multi-tasking scenarios: In smart grid operation and maintenance scenarios, staff often need to handle tasks such as switching workstations and recording inspections for multiple switchgear units simultaneously. If the limit switch triggering step is independent of the cranking operation, it is easily overlooked due to distraction and the complexity of the tasks. This design deeply integrates the limit switch operation with the cranking operation. When operators touch the crank and prepare to switch workstations for extraction / isolation / experimentation / connection, they will naturally pay attention to the "limit switch step," eliminating the need for conscious memorization and significantly reducing the probability of operational oversights in multi-tasking scenarios. This design is especially suitable for high-frequency, multi-device operation and maintenance scenarios. Enforcing compliance with the "limit priority" operating logic ensures safe operation: This design, through process connections, creates an implicit constraint that "the crank cannot be operated normally without addressing the limit switch." If the operator does not first trigger the limit switch opening and closing, the crank operation will be hindered because the limit switch is not released; for example, the shaft cannot drive the rotating wheel to rotate, thus forcing compliance with the "limit priority" safety operating procedure. This mechanism avoids the illegal operation space of "skipping the limit switch and directly operating the crank" found in existing technologies, ensuring that every workstation switch is based on a compliant limit switch state, effectively eliminating the risks of "forced cranking without releasing the limit switch leading to component damage" or "rotation in a non-working state due to failure to trigger the limit switch."

[0019] 5. The design of the third component in this invention brings the following benefits: It achieves linkage between lubrication and limit operation, completely eliminating the risk of forgotten lubrication: The third component triggers lubrication through the limit operation of the rotating wheel by the second component, eliminating the need for additional lubrication steps by operators; that is, when the operator releases or locks the limit of the rotating wheel, the third component simultaneously completes the lubrication of the meshing part between the rotating wheel and the transmission gear; this design solves the problem in the prior art where "operators forget to add lubricant due to busy maintenance or oversight during inspections," transforming passive "periodic lubrication" into active "operation-linked lubrication," ensuring that the core transmission components are always in an effective lubrication state; Precisely targeted lubrication of key friction pairs eliminates transmission jamming and ensures smooth switching: The meshing part between the rotating wheel and the transmission gear is the core friction point of the hand-cranked propulsion mechanism and the area most prone to jamming due to insufficient lubrication. During limit operation, the third component precisely delivers lubricant to this meshing gap, avoiding lubricant waste or omission of critical parts. Through this precise "operation-as-lubrication" supply, the frictional resistance between the rotating wheel and the transmission gear is effectively reduced, eliminating hand jamming and poor rotation during station switching. This ensures smooth operation when the drawer is pulled out, isolated, tested, or connected between stations, guaranteeing operational efficiency and the accuracy of station switching. No additional operating procedures are required, making it suitable for high-frequency maintenance scenarios and improving efficiency: In existing technologies, separate lubrication operations require operators to stop the machine, open the cabinet, locate the lubrication point, and add lubricant, which is cumbersome and time-consuming. The third component integrates lubrication into the limit switch operation without adding any extra steps; operators can complete lubrication simultaneously while normally performing the rotation wheel limit release / lock to switch workstations, without interrupting the maintenance process; the above "integrated operation" design is particularly suitable for scenarios with multiple switch cabinets in smart grids that involve high-frequency workstation switching, effectively reducing the maintenance time of a single device and improving overall maintenance efficiency. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the main body of the present invention; Figure 2 This is another perspective view of the main structure of the present invention; Figure 3 This is a three-dimensional schematic diagram of the propulsion mechanism of the present invention; Figure 4 This is a diagram showing the state of the interlocking plate releasing the hexagonal operating hole in this invention; Figure 5 This is a diagram showing the structural distribution of the hexagonal operating hole, teeth, shaft, rotating wheel, transmission gear, and snap-fit ​​piece in this invention. Figure 6 This is a diagram showing the working states of the first and second components in this invention; Figure 7 This is a three-dimensional schematic diagram of the working state of the second component in this invention; Figure 8 This is a front view of the second component in operation in this invention; Figure 9 These are structural diagrams of the transverse groove, electrically controlled telescopic rod, and inclined block in this invention. Figure 10 This is a three-dimensional schematic diagram showing the partial component positions of the first and third components in this invention; Figure 11 This is a diagram showing the working state of the third component in this invention.

[0021] In the diagram: 1. Drawer; First component: 201. Auxiliary plate; 202. Interlocking plate; 203. Spring A; 204. Hexagonal operating hole; 205. Gear; 206. Shaft; 207. Rotating wheel; 208. Transmission gear; Second component: 301, limiting cavity; 302, spring B; 303, electrical contact A; 304, electrical contact B; 305, indicator light; 306, latching piece; 307, outer extension plate; 308, moving piece; 309, transverse groove; 310, anti-accidental touch groove; 311, spring C; 312, electrically controlled telescopic rod; 313, inclined block; Third component: 401, insertion tooth; 402, annular groove; 403, hollow sleeve; 404, spring D; 405, cotton swab; 406, oil drain hole. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0024] Example Please refer to Figures 4 to 8 As shown: In order to solve the problems mentioned in the technical solution, this application provides an interlocking hand-cranked propulsion mechanism for a drawer switch cabinet based on a smart grid, including: a drawer 1, and further including: a shaft 206, a rotating wheel 207 in the first component and a second component; The second component includes a limiting cavity 301 opened in the rotating wheel 207. The rotating wheel 207 is slidably sleeved on the shaft 206 through the limiting cavity 301. A spring B302 is fixedly connected to the end of the shaft 206. The end of the spring B302 away from the shaft 206 is fixedly connected to the inner wall of the limiting cavity 301. An electrical contact A303 is fixedly connected to the center of the end of the shaft 206, an electrical contact B304 is fixedly connected to the inner wall of the rotating wheel 207, and an indicator light 305 is provided on the outer wall of the drawer 1; a buckle piece 306 is fixedly connected to the center of the outer end of the rotating wheel 207, an extension plate 307 is provided on one side of the rotating wheel 207, a movable piece 308 is vertically slidably connected to the extension plate 307 through a slot, a transverse groove 309 is symmetrically opened through the upper part of the movable piece 308, and an anti-accidental touch groove 310 is opened through the middle of the movable piece 308; a spring C311 is fixedly connected to the upper part of the movable piece 308, an electrically controlled telescopic rod 312 is symmetrically fixedly connected to the extension plate 307, and an inclined block 313 is fixedly connected to the output end of the electrically controlled telescopic rod 312.

[0025] The second component is used for limiting the rotation of the wheel 207 during non-working periods.

[0026] The limiting cavity 301 consists of a cylindrical cavity and an upper and lower symmetrical elongated sliding groove; it is adapted to the shaft 206, which can only slide laterally within it and cannot rotate axially.

[0027] There is an electrical connection between electrical contact A303, electrical contact B304 and indicator light 305; when electrical contact A303 and electrical contact B304 are in contact, indicator light 305 will be constantly lit to remind the operator that the rotating wheel 207 is in the limit state (limit / release limit), and at this time the electric telescopic rod 312 will adapt to the extension / retraction action under the control of the main controller.

[0028] The 306 snap fastener consists of a round piece and a long strip.

[0029] The anti-accidental touch groove 310 consists of a circular through groove and a long through groove. When the latching piece 306 is not restricted, the circular through groove coincides with the latching piece 306. When the latching piece 306 needs to be restricted, the moving piece 308 moves upward, and the long through groove of the anti-accidental touch groove 310 will be engaged with the long block of the latching piece 306, thereby restricting the latching piece 306.

[0030] The inclined block 313 is used in conjunction with the transverse groove 309.

[0031] A further embodiment: Please refer to Figures 1 to 5 , Figure 10 , Figure 11 As shown: The first component also includes an auxiliary plate 201 fixed inside the drawer 1. An interlocking plate 202 is slidably connected to the outer side of the auxiliary plate 201. A spring A203 is fixedly connected to the side end of the interlocking plate 202. A hexagonal operating hole 204 is fixedly connected to the outer end of the shaft 206. An extension plate 307 is fixedly connected to the auxiliary plate 201. Teeth 205 are fixedly connected at equal intervals to the outer circumference of the hexagonal operating hole 204. The rotating wheel 207 is slidably sleeved on the shaft 206 through the limiting cavity 301. The hexagonal operating hole 204 is connected to the transmission gear 208 through the meshing of the teeth 205. The third component includes an insertion tooth 401 inserted into the tooth 205, with an annular groove 402 formed inside the insertion tooth 401; a hollow sleeve 403 is fixedly connected to the inner cavity of the tooth 205, with one end of the hollow sleeve 403 away from the fixed wall of the tooth 205 sliding in the annular groove 402; a spring D404 is fixedly connected to the inner wall of the tooth 205, with one end of the spring D404 away from the fixed wall of the tooth 205 fixedly connected to the insertion tooth 401; the hollow sleeve 403 is sleeved outside the spring D404, and a cotton strip 405 is placed on the outer periphery of the hollow sleeve 403 and inside the cavity of the tooth 205; and oil drain holes 406 are equidistantly formed through the tooth 205.

[0032] Among them, the interlocking plate 202 is used to open and close the insertion hole of the hexagonal operating hole 204 with the cooperation of the spring A203, thereby blocking the insertion hole in the non-working state and preventing the crank handle from being inserted.

[0033] The socket on the hexagonal operating hole 204 is compatible with the crank handle.

[0034] The shaft 206 consists of a column and a long strip.

[0035] In use, the operator can switch between drawer 1 for pulling out / isolating / testing / connecting workstations by hand cranking the handle, with the cooperation of the rotating wheel 207, the transmission gear 208 and subsequent transmission components.

[0036] The third component is used for lubrication between the tooth 205 and the transmission gear 208 to prevent rotational jamming between them.

[0037] The hollow sleeve 403 is plugged into the annular groove 402.

[0038] In addition to isolating the cotton swab 405 from contact with the spring D404, the hollow sleeve 403 can also be used as a guide for the movement of the insertion teeth 401.

[0039] The inner cavity of tooth 205 is filled with lubricating oil, which can be absorbed and stored by cotton swab 405. When it is squeezed, a certain amount of oil can be leaked out.

[0040] The working principle of all the content in the above embodiments is as follows: This mechanism achieves full-process control of the Drawer 1 switch cabinet through the coordinated action of the first component (anti-misinsertion sealing), the second component (transmission limit), and the third component (automatic lubrication), ensuring "safe locking in non-working state, smooth switching in working state, and reset locking after switching." The specific working process is as follows, taking "switching Drawer 1 from its initial non-working state to the target workstation (such as the connection workstation)" as an example: Initial non-working state: When not in operation, all components of the mechanism are in a preset safe state, and the core constraint functions are in effect: First component state: Under the elastic force of spring A203, interlock plate 202 horizontally blocks the insertion hole of hexagonal operating hole 204, preventing the crank handle from being inserted, forming an "initial anti-misinsertion barrier"; auxiliary plate 201 is fixed inside drawer 1, providing sliding support for interlock plate 202.

[0041] Second component status: The movable piece 308 is in a low position under the action of the spring C311, and the circular through groove of the anti-accidental contact groove 310 coincides with the buckle piece 306 at the outer end of the rotating wheel 207, and the rotating wheel 207 is not limited for the time being. The shaft 206, composed of a column rod and a long strip plate, is in its initial position within the limiting cavity 301 of the rotating wheel 207. The electrical contact A303 and electrical contact B304 are not in contact, and the indicator light 305 is not lit. The electrically controlled telescopic rod 312 is in the retracted state, and the inclined block 313 is not inserted into the transverse slot 309 of the moving piece 308.

[0042] Third component state: The insertion tooth 401 meshes with the transmission gear 208 under the elastic force of the spring D404; The hollow sleeve 403 is sleeved on the outside of the spring D404, and one end is slidably embedded in the annular groove 402 of the insertion tooth 401; The tampon 405 absorbs the lubricating oil injected into the inner cavity of the tooth 205, and the drain hole 406 is in a closed state, with no lubricating oil seeping out.

[0043] Workflow: From preparation to workstation switching Step 1: Remove the anti-misinsertion seal of the first component (initial unlocking) The operator must first perform the "compliant start action": pull the interlock plate 202 horizontally. At this time, the spring A203 is forced to compress, causing the interlock plate 202 to deviate from the insertion position of the hexagonal operating hole 204 and expose the insertion hole. This step is called "unlocking the first safety barrier," which forces the operator to actively trigger it to avoid the risk of "accidentally inserting the crank" and ensure subjective safety confirmation before operation.

[0044] Step 2: Insert the crank handle and trigger the second component's limit release (core unlock). Inserting the crank handle to push the shaft 206: After inserting the crank handle into the insertion hole of the hexagonal operating hole 204, the axial force of the crank handle will push the shaft 206 to move laterally along the limiting cavity 301 of the rotating wheel 207; Electrical contact linkage and indicator light 305 reminder: When the shaft 206 moves, it causes electrical contact A303 and electrical contact B304 to come into contact, forming a circuit path. The indicator light 305 on the outer wall of the drawer lights up, clearly indicating "currently in the limit release process", avoiding misjudgment of the status by the operator; The electrically controlled telescopic rod 312 causes the movable piece 308 to unlock: After the indicator light 305 lights up, the main controller, which is electrically connected to all parts of the device, receives an electrical signal and controls the electrically controlled telescopic rod 312 on the extension plate 307 to extend, causing the inclined block 313 to insert into the transverse groove 309 of the movable piece 308; the inclined surface of the inclined block 313 presses against the inner wall of the transverse groove 309, pushing the movable piece 308 to move upward along the slot of the extension plate 307, at which time the spring C311 is compressed; Furthermore, after the movable piece 308 moves upward, the long through groove of the anti-accidental contact groove 310 separates from the long block of the buckle piece 306, and the "rotation restriction" of the rotating wheel 207 is completely released, allowing it to rotate synchronously with the shaft 206.

[0045] This step is called "unlocking the second safety barrier". Through the linkage of "mechanical + electronic control + indicator light", it ensures that the limit switch of the rotating wheel 207 is released only under compliant operation to avoid unexpected rotation.

[0046] Step 3: Manually push the drive forward to switch to drawer 1 (drive-driven operation). When the operator turns the crank handle clockwise or counterclockwise, since the shaft 206 cannot rotate axially, the torque of the crank handle is directly transmitted to the rotating wheel 207 through the shaft 206, causing the rotating wheel 207 to rotate synchronously. During the rotation of the rotating wheel 207, the components in the second assembly will be transmitted through the following transmission path: that is, the rotating wheel 207 drives the transmission gear 208 to drive the guide rail transmission component in the subsequent switch cabinet - drawer 1 - to move smoothly along the guide rail. Workstation switching: By controlling the number of rotations of the crank handle, drawer 1 can be precisely switched to any target workstation such as "extract, isolate, experiment, or connect" (e.g., when rotating to the connect workstation, the main circuit contacts are precisely connected).

[0047] This step achieves the complete transmission of "power input torque transmission to move drawer 1". The "lateral movement without rotation" design of shaft 206 ensures lossless torque transmission and improves the accuracy of workstation switching.

[0048] Step 4: Synchronous lubrication of the third component to prevent transmission jamming (auxiliary protection) During the meshing and rotation of the tooth 205 and the transmission gear 208, the transmission gear 208 generates radial extrusion force on the insertion tooth 401. Under the extrusion force, the insertion tooth 401 compresses the spring D404 and moves laterally along the inner cavity of the tooth 205. When the insertion tooth 401 moves, the inner wall of the annular groove 402 squeezes the cavity sleeve 403, and the cavity sleeve 403 further squeezes the cotton strip 405. After the cotton strip 405 is squeezed, the adsorbed lubricating oil seeps out through the oil drain hole 406 of the tooth 205 and drips directly onto the meshing contact surface between the tooth 205 and the transmission gear 208, forming continuous lubrication.

[0049] This step is "automatic lubrication," which requires no additional lubricant. Lubrication is triggered by the "compression force" during the transmission process, solving the problem of "insufficient lubrication leading to jamming and wear" in existing technologies.

[0050] Post-operation reset: Locks the mechanism and restores it to a non-operating safe state. Once drawer 1 reaches the target workstation, the operator stops turning the crank and performs a reset operation: Pulling out the crank handle resets shaft 206: Pulling out the crank handle causes shaft 206 to move laterally in the opposite direction along the limiting cavity 301 under the elastic force of spring B302 inside the rotating wheel 207; the reset of shaft 206 causes electrical contact A303 to separate from electrical contact B304, and indicator light 305 goes out, indicating "limiting process ended"; the main controller receives the signal and controls the electric telescopic rod 312 to retract, and the inclined block 313 exits the transverse groove 309 of the moving piece 308; The movable piece 308 is reset and the rotating wheel 207 is locked: the movable piece 308 is reset and moved down under the action of the spring C311, and the long through groove of the anti-accidental contact groove 310 is re-engaged on the long block of the buckle piece 306. The rotating wheel 207 is limited and can no longer rotate, thereby avoiding the shaft 206 from spinning freely in the non-working state, which would cause the drawer 1 to shift position. Interlock plate 202 resets and blocks the insertion hole: The operator loosens interlock plate 202, spring A203 resets, and pushes interlock plate 202 to re-block the insertion hole of hexagonal operating hole 204 to prevent the crank handle from being accidentally inserted; The third component lubrication reset: After the transmission gear 208 stops rotating, the squeezing force on the insertion tooth 401 disappears, the insertion tooth 401 resets under the action of the spring D404, the cotton swab 405 is no longer squeezed, lubrication stops, the cotton swab 405 reabsorbs lubricating oil, and is reserved for the next operation.

[0051] This mechanism solves the problems of "idling in non-working state, insufficient lubrication, and risk of misoperation" in existing technologies through a closed-loop process of "two-stage safety unlocking (first component to prevent misinsertion + second component to prevent misrotation) → precise transmission to switch positions → automatic lubrication to ensure smooth operation → reset and lock to return to safety," thus ensuring the safe, accurate, and reliable switching of positions in smart grid switchgear.

[0052] The above work process is for reference only. Figure 1 To be continued Figure 11 .

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An interlocked hand-cranked propulsion mechanism for a drawer switchgear based on a smart grid, comprising: The drawer (1) is characterized in that it further includes: a shaft (206) and a rotating wheel (207) within the first component, and a second component; The second component includes a limiting cavity (301) opened in the rotating wheel (207), the rotating wheel (207) is slidably sleeved on the shaft (206) through the limiting cavity (301), and a spring B (302) is fixedly connected to the end of the shaft (206), and the end of the spring B (302) away from the shaft (206) is fixedly connected to the inner wall of the limiting cavity (301); An electric contact A (303) is fixedly connected to the center of the end of the shaft (206), an electric contact B (304) is fixedly connected to the inner wall of the rotating wheel (207), and an indicator light (305) is provided on the outer wall of the drawer (1). A buckle piece (306) is fixedly connected to the center of the outer end of the rotating wheel (207). An extension plate (307) is provided on one side of the rotating wheel (207). A movable piece (308) is vertically slidably connected to the extension plate (307) through a slot. A transverse groove (309) is symmetrically opened through the upper part of the movable piece (308). An anti-accidental touch groove (310) is opened through the middle of the movable piece (308). A spring C (311) is fixedly connected to the upper part of the movable piece (308), and an electrically controlled telescopic rod (312) is symmetrically fixedly connected to the outer extension plate (307). An inclined block (313) is fixedly connected to the output end of the electrically controlled telescopic rod (312).

2. The interlocked hand-cranked propulsion mechanism for a drawer switchgear based on a smart grid according to claim 1, characterized in that: The first component also includes an auxiliary plate (201) fixed inside the drawer (1), an interlocking plate (202) is slidably connected to the outside of the auxiliary plate (201), and a spring A (203) is fixedly connected to the side end of the interlocking plate (202). The outer end of the shaft (206) is fixedly connected to a hexagonal operating hole component (204); The extension plate (307) is fixedly connected to the auxiliary plate (201).

3. The interlocked hand-cranked propulsion mechanism for a drawer switchgear based on a smart grid according to claim 2, characterized in that: The hexagonal operating hole component (204) has teeth (205) fixedly connected at equal intervals on the outer circumference of the annulus, and the hexagonal operating hole component (204) is connected to a transmission gear (208) through the meshing of the teeth (205).

4. The interlocked hand-cranked propulsion mechanism for a drawer switchgear based on a smart grid according to claim 3, characterized in that: It also includes a third component; The third component includes a insertion tooth (401) that is inserted into the tooth (205), and an annular groove (402) is provided in the insertion tooth (401). A hollow sleeve (403) is fixedly connected to the inner cavity of the tooth (205), and the end of the hollow sleeve (403) away from the fixed wall of the tooth (205) slides in the annular groove (402).

5. The interlocked hand-cranked propulsion mechanism for a drawer switchgear based on a smart grid according to claim 4, characterized in that: A spring D (404) is fixedly connected to the inner wall of the tooth (205), and the end of the spring D (404) away from the fixed wall of the tooth (205) is fixedly connected to the insertion tooth (401); The hollow sleeve (403) is sleeved outside the spring D (404), and a cotton strip (405) is placed on the outer periphery of the hollow sleeve (403) and in the inner cavity of the tooth (205). Oil drain holes (406) are provided at equal intervals on the tooth (205).

6. The interlocked hand-cranked propulsion mechanism for a drawer switchgear based on a smart grid according to claim 3, characterized in that: The inner cavity of the tooth (205) is filled with lubricating oil.

7. The interlocked hand-cranked propulsion mechanism for a drawer switchgear based on a smart grid according to claim 1, characterized in that: The shaft (206) consists of a column and a long strip.

8. The interlocked hand-cranked propulsion mechanism for a drawer switchgear based on a smart grid according to claim 1, characterized in that: The buckle piece (306) is composed of a round piece and a long strip, and the anti-accidental contact groove (310) is composed of a circular through groove and a long through groove.

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