A double interlocked manual device

Abstract

The utility model discloses a kind of double interlocking manual devices, including interlocking manual assembly, its one side is equipped with top plate and bottom plate, symmetrically opening has slide groove on top plate, the both ends of slide groove are set to scale line;Two motors, between top plate and the bottom plate, and away from interlocking manual assembly;Lead screw, one end is connected with the drive end of two motors, the other end is connected with limit pin, the end of limit pin is adapted with interlocking hand assembly;Wherein, the both ends of limit pin are equipped with limit step structure and fixed pin mounting hole, fixed pin mounting hole is inserted with fixed pin Plug-in installation;Spring, sleeve is located in limit pin outside, and between limit step structure and fixed pin;Nut, solid is equipped in lead screw outside, located on slide groove, can be displaced along the length direction of slide groove.The adaptation and disengagement of limit pin and interlocking manual assembly are accurately controlled by motor start-stop;Mechanical interlocking structure is simultaneously formed by limit step, spring and limit pin, electromagnetic and mechanical interlocking independent and synergistic effect are realized.

Description

Technical Field

[0001] This utility model belongs to the technical field of electric three-station mechanisms, specifically relating to a double-locking manual device. Background Technology

[0002] As the core operating mechanism of high-voltage switchgear GIS equipment, the electric three-position mechanism integrates the key functions of disconnecting switches and grounding switches. In special scenarios such as equipment maintenance or emergencies, manual operation by on-site personnel is required. To mitigate the risk of misoperation during manual operation and ensure safe equipment operation, this mechanism must be equipped with reliable interlocking functions. With the increasing demands for equipment safety redundancy in power systems, the presence of both electromagnetic and mechanical interlocking functions has become a core requirement for mainstream users and a key direction for the optimization and improvement of electric three-position mechanisms.

[0003] Currently, while similar electric three-station mechanisms on the market have attempted to achieve electromagnetic-mechanical double interlocking functions, the design and implementation principles of each product differ significantly, lacking a unified design approach and structural paradigm. For example, Yuyao Electric's three-station mechanism manual device uses a gear and rack transmission structure to achieve interlocking control. This type of structure is complex, resulting in extremely poor versatility and applicability of the double interlocking function device. This not only increases the complexity of the manufacturing process but also significantly raises R&D, material, and maintenance costs, making it difficult to adapt to the needs of large-scale production and industry standardization. Utility Model Content

[0004] The purpose of this utility model is to provide a double interlocking manual device to solve the technical defects of existing technologies that use gear and rack transmission structures to achieve interlocking control, such as complex structure, poor scalability, and high cost.

[0005] The technical solution adopted in this utility model is as follows: A double-locking manual device, comprising: The interlocking manual assembly has a top plate and a bottom plate on one side. The top plate has symmetrically opened sliding grooves, and both ends of the sliding grooves are provided with engraved lines. Two motors are located between the top plate and the bottom plate, and are away from the interlocking manual assembly; The lead screw has one end connected to the two motor drive ends and the other end connected to a limit pin. The end of the limit pin is adapted to the interlocking hand assembly. The two ends of the limit pin are provided with a limit step structure and a fixing pin mounting hole. A fixing pin is inserted and removed into the fixing pin mounting hole. A spring is sleeved on the outside of the limiting pin and is located between the limiting step structure and the fixing pin; The nut is fixed to the outside of the lead screw and located on the slide groove, and can be moved along the length of the slide groove.

[0006] Furthermore, the interlocking manual component includes: A mounting plate and a locking plate are arranged opposite to each other. One end of the limiting pin is connected to the locking plate, and the other end passes through the mounting plate and is connected to the lead screw. An electromagnet is mounted on a mounting plate, with its end facing the lock plate; Fixed bases are located at both ends of the lock plate on the side opposite to the mounting plate; The pull pin is located in the lock plate; Microswitches are symmetrically arranged on the side of the mounting plate facing the lock plate; The limit switch is fixed on the mounting plate on the side facing the lock plate and is located between two microswitches.

[0007] Furthermore, the mounting plate is provided with a fixed seat shaft mounting hole, an electromagnet mounting hole, a limit pin mounting hole, a first manual operation hole, a micro switch mounting hole, a first pull pin mounting hole, a round hole, and a limit switch mounting hole in sequence. The electromagnet mounting hole is located in the upper part of the mounting plate, and the electromagnet is installed in the electromagnet mounting hole. The mounting holes of the fixed base shaft are symmetrically opened below the mounting holes of the electromagnet. One end of each of the two fixed bases is set in the mounting hole of the fixed base shaft, and the other end extends to the side opposite to the mounting plate of the locking plate and contacts the locking plate. The limiting pin mounting holes are opened on both sides above the electromagnet mounting holes. One end of the limiting pin with a limiting step structure is connected to the locking plate, and the other end of the limiting pin with a fixing pin mounting hole extends outward through the limiting pin mounting hole. The micro switch mounting holes are symmetrically arranged at both ends of the lower part of the mounting plate, and a micro switch is connected to each of the two micro switch mounting holes; The first pin mounting hole is located below the electromagnet mounting hole, and the pin is disposed in the first pin mounting hole; The first manual operation hole is located on both sides of the pin mounting hole; The limit switch mounting hole is located between two micro switch mounting holes, and a limit switch is provided in each of the two limit switch mounting holes.

[0008] Furthermore, there are two electromagnets, which are spaced apart.

[0009] Furthermore, the circumferential diameter of the manual operation hole is larger than the circumferential diameter of the fixed seat shaft mounting hole, the limit pin mounting hole, the micro switch mounting hole, the second pull pin mounting hole, the round hole, and the limit switch mounting hole.

[0010] Furthermore, the lock plate is provided with an electromagnet core fixing hole, a limit pin moving hole, a fixing seat moving hole, a second manual operation hole, a micro switch switching structure, a second pull pin mounting hole, a limit switch switching structure, and a fixing seat mounting hole. The limiting pin moving holes are symmetrically opened above the lock plate, and the electromagnet core fixing hole is opened between the two limiting pin moving holes; The fixed base has two movable holes, which are located below the electromagnet core fixed hole. The limit switch switching structure is located below the two fixed base moving holes; The second manual operation hole is located at both ends below the lock plate; The fixed base mounting holes are provided in two places, and the two fixed base mounting holes are located between the two second manual operation holes; The micro switch switching structure is located at the bottom of the lock plate and below the two second manual operation holes; The limit switch switching structure is also located at the bottom of the lock plate, between the two micro switch switching structures.

[0011] Furthermore, the limit switch switching structure is triangular.

[0012] Furthermore, the micro switch switching structure is a toothed structure, with the tooth tips far from the bottom of the lock plate.

[0013] Furthermore, the end of the electromagnet has an iron core, which is in contact with the locking plate.

[0014] Furthermore, the electromagnet has a wire outlet hole.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The electromagnetic interlock is formed by a motor-driven lead screw that moves a limit pin. The motor's start and stop precisely control the engagement and disengagement of the limit pin and the manual interlock components. Simultaneously, a mechanical interlock structure is formed by a limit step, a spring, and a limit pin. The spring preload, in conjunction with the limit pin, achieves mechanical locking or unlocking of the limit pin. This realizes the independent yet synergistic action of electromagnetic and mechanical interlocks, providing double protection against the risk of misoperation during manual operation. It fully meets the core requirements of mainstream users for dual interlock functions and enhances the safety redundancy of the equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, 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 utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional schematic diagram of a double-locking manual device provided by this utility model; Figure 2A schematic diagram of the interlocking manual component in a double interlocking manual device provided by this utility model; Figure 3 A front view of the interlocking manual component in a double-interlocking manual device provided by this utility model; Figure 4 A top view of the interlocking manual component in a double-interlocking manual device provided by this utility model; Figure 5 Rear view of the interlocking manual component in a double interlocking manual device provided by this utility model; Figure 6 A schematic diagram of the mounting plate in a double-lock manual device provided by this utility model; Figure 7 A schematic diagram of the locking plate in a double-locking manual device provided by this utility model; Figure 8 A schematic diagram of the limit pin structure in a double-lock manual device provided by this utility model; Figure 9 A schematic diagram of the electromagnet installation in a double-locking manual device provided by this utility model; In the diagram: 1. Motor; 2. Base plate; 3. Lead screw; 4. Nut; 5. Interlocking manual assembly; 501. Electromagnet; 50101. Iron core; 502. Mounting plate; 50201. Fixed seat shaft mounting hole; 50202. Electromagnet mounting hole; 50203. Limit pin mounting hole; 50204. First manual operation hole; 50205. Micro switch mounting hole; 50206. First pull pin mounting hole; 50207. Round hole; 50208. Limit switch mounting hole; 503. Locking plate; 50301. Electromagnet core fixing hole; 50302. Limit pin moving hole; 50303. Fixed seat moving hole; 50304. Second manual operation hole; 50305, Micro switch switching structure; 50306, Second pull pin mounting hole; 50307, ​​Limit switch switching structure; 50308, Fixed base mounting hole; 504, Limit pin; 50401, Limit step structure; 50402, Fixed pin mounting hole; 505, Fixed base; 506, Pull pin; 507, Limit switch; 508, Micro switch; 6, Top plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] To address the technical deficiencies mentioned in the background section, the present invention will be further described in detail below with reference to the accompanying drawings: like Figures 1-9 As shown, a double-interlocking manual device includes an interlocking manual assembly 5. One side of the interlocking manual assembly 5 has a top plate 6 and a bottom plate 2. The top plate 6 has symmetrically arranged grooves, with engraved lines at both ends of the grooves. Two motors 1 are located between the top plate 6 and the bottom plate 2, away from the interlocking manual assembly 5. A lead screw 3 has one end connected to the drive end of the two motors 1, and the other end connected to a limit pin 504. The end of the limit pin 504 is adapted to the interlocking manual assembly 5. The limit pin 504 has a limit step structure 50401 and a fixing pin mounting hole 50402 at both ends, with a fixing pin inserted into the fixing pin mounting hole 50402. A spring is sleeved on the outside of the limit pin 504 and located between the limit step structure 50401 and the fixing pin. A nut 4 is fixed on the outside of the lead screw 3, located on the groove, and can move along the length of the groove.

[0022] In the above structure, the electromagnetic interlocking core is formed by the motor 1 driving the lead screw 3 to move the limit pin 504. The start and stop of the motor 1 precisely control the adaptation and disengagement of the limit pin 504 and the manual interlocking component 5. At the same time, the mechanical interlocking structure is formed by the limit step structure 50401, the spring and the limit pin 504. The spring preload cooperates with the limit pin 504 to realize the mechanical locking or unlocking of the limit pin 504. The electromagnetic and mechanical interlocking are independent and synergistic, providing double protection against the risk of misoperation during manual operation. This fully meets the core requirements of mainstream users for dual interlocking functions and improves the safety redundancy of the equipment.

[0023] Compared to the complex structure of gear and rack transmission in existing technologies, this solution adopts a modular combination of motor 1, lead screw 3, nut 4, and limit pin 504, which has a simple structure and short transmission link. The engraved lines at both ends of the slide provide a clear stroke positioning reference for the displacement of nut 4. Motor 1 drives lead screw 3 to move nut 4 precisely along the slide, thereby controlling the fitting accuracy of limit pin 504 and interlocking manual component 5. At the same time, the dual-motor 1 drive design improves the stability of power output, avoids interlocking failure caused by single motor 1 failure, and ensures the reliability and accuracy of interlocking state switching.

[0024] like Figures 2-9 As shown, the interlocking manual assembly 5 includes a mounting plate 502 and a locking plate 503. The mounting plate 502 and the locking plate 503 are arranged opposite to each other. One end of the limiting pin 504 is connected to the locking plate 503, and the other end passes through the mounting plate 502 and is connected to the lead screw 3. An electromagnet 501 is provided on the mounting plate 502, with its end facing the locking plate 503. A fixing seat 505 is provided at both ends of the locking plate 503 on the side away from the mounting plate 502. A pull pin 506 is provided in the locking plate 503. Microswitches 508 are symmetrically arranged on the side of the mounting plate 502 facing the locking plate 503. A limit switch 507 is fixed on the side of the mounting plate 502 facing the locking plate 503 and is located between the two microswitches 508.

[0025] In practice, the mounting plate 502 is provided with a fixed seat shaft mounting hole 50201, an electromagnet mounting hole 50202, a limit pin mounting hole 50203, a first manual operation hole 50204, a micro switch mounting hole 50205, a first pull pin mounting hole 50206, a round hole 50207, and a limit switch mounting hole 50208 in sequence; the locking plate 503 is provided with an electromagnet core fixing hole 50301, a limit pin moving hole 50302, a fixed seat moving hole 50303, a second manual operation hole 50304, a micro switch switching structure 50305, a second pull pin mounting hole 50306, a limit switch switching structure 50307, ​​and a fixed seat mounting hole 50308.

[0026] The fixed seat shaft mounting holes 50201 are symmetrically opened below the electromagnet mounting holes 50202. One end of each of the two fixed seats 505 is set in the fixed seat shaft mounting holes 50201, and the other end extends to the side of the locking plate 503 opposite to the mounting plate 502 and contacts the locking plate 503. The limit pin mounting holes 50203 are opened on both sides above the electromagnet mounting holes 50202. One end of the limit pin 504 with the limit step structure 50401 is connected to the locking plate 503, and the other end of the limit pin 504 with the fixed pin mounting hole 50402 extends outward through the limit pin mounting hole 50203. Microswitch mounting holes 50205 are symmetrically arranged at both ends of the lower part of the mounting plate 502, and microswitches 508 are connected to both microswitch mounting holes 50205; the second pin mounting hole 50306 is opened below the electromagnet mounting hole 50202, and the pin 506 is set in the second pin mounting hole 50306; the first manual operation hole 50204 is opened on both sides of the first pin mounting hole 50206; the limit switch mounting hole 50208 is opened between the two microswitch mounting holes 50205, and a limit switch 507 is provided in both limit switch mounting holes 50208.

[0027] Limit pin moving holes 50302 are symmetrically opened above the locking plate 503; electromagnet core fixing holes 50301 are opened between the two limit pin moving holes 50302; two fixing seat moving holes 50303 are opened, and the two fixing seat moving holes 50303 are located below the electromagnet core fixing holes 50301; limit switch switching structure 50307 is opened below the two fixing seat moving holes 50303; second manual operation holes 50304 are opened at both ends below the locking plate 503; two fixing seat mounting holes 50308 are opened, and the two fixing seat mounting holes 50308 are located between the two second manual operation holes 50304; micro switch switching structure 50305 is opened at the bottom of the locking plate 503, and is located below the two second manual operation holes 50304; limit switch switching structure 50307 is also opened at the bottom of the locking plate 503, and is located between the two micro switch switching structures 50305.

[0028] The electromagnet mounting hole 50202 is located in the upper part of the mounting plate 502. Two electromagnets 501 are provided, spaced apart within the mounting hole 50202. Figure 9 As can be seen, the end of the electromagnet 501 has an iron core 50101, which is located in the electromagnet core fixing hole 50301; the end of the limiting pin 504 with the limiting step structure 50401 is located on the side of the locking plate 503 away from the mounting plate 502, and the limiting step structure 50401 cooperates with the limiting pin moving hole 50302.

[0029] A fixed seat 505 is installed in each of the two fixed seat shaft mounting holes 50201. The end of the fixed seat 505 passes through the fixed seat moving hole 50303 and extends outward. One end of the pull pin 506 is connected to the first pull pin mounting hole 50206, and the other end extends into the second pull pin mounting hole 50306.

[0030] In this design, the limit switch switching structure 50307 is triangular, and the micro switch switching structure 50305 is toothed, with the tooth tips far from the bottom of the locking plate 503.

[0031] In this design, the electromagnet 501 has a wire outlet hole.

[0032] In practical applications, the position of nut 4 serves as the trigger signal. Through the mechanical linkage of nut 4, limit pin 504, and locking plate 503, combined with the reset effect of the spring, the device achieves precise switching between two states: free unlocking operation and single-sided locking to prevent misoperation, ultimately achieving the goal of mechanical interlocking protection.

[0033] Double-sided tripping in place: In the unlocked state, when both the isolation and grounding nuts 4 are close to the interlocking manual assembly 5 (the side away from the motor 1) and stopped in the tripping position (i.e., the center of the nut 4 is between the two markings on the top plate 6), the nuts 4 on both sides will simultaneously push the corresponding limit pins 504 out a specific distance. In this state, the limit step structure 50401 of the limit pin 504 is in a non-contact state with the locking plate 503, and the sliding of the locking plate 503 is not mechanically obstructed.

[0034] When the on-site personnel slide the pin 506, the locking plate 503 can slide freely left and right to ensure that the mounting plate 502 on the isolation side or grounding side can be precisely aligned with the second manual operation hole 50304 to meet the requirements of normal manual operation.

[0035] Single-sided non-opening (closed / half-open): Locked state to prevent misoperation. Taking the left side (isolation side) of the mechanism core in the closed or half-open state as an example: At this time, the left nut 4 will move away from the interlocking manual assembly 5, losing its pushing effect on the left limit pin 504. The left limit pin 504 will reset under the action of the spring return force, and its limit step structure 50401 will enter the sliding path of the locking plate 503, forming a mechanical block. When the on-site personnel pull up the pull pin 506, the locking plate 503 can only slide to the unobstructed right side (grounding side), ensuring that only the isolation side mounting plate 502 can be aligned with the operating hole; while sliding to the left (grounding side operating direction) is completely blocked, avoiding grounding side misoperation. Conversely, if the right side (grounding side) is in the closed or half-open / half-closed state, the locking plate 503 can only slide to the left, and isolation side misoperation is eliminated.

[0036] When the high-voltage power grid backend does not issue a power-on authorization command to the electromagnet 501 module, the axial iron core 50101 of the electromagnet 501 remains in a protruding state. At this time, if on-site personnel attempt to operate by sliding the pull pin 506, the sliding path of the locking plate 503 will directly interfere with the protruding iron core 50101. The iron core 50101 forms a rigid block, preventing the locking plate 503 from sliding to the position where the isolation side or grounding side mounting plate 502 is coaxial with the second manual operation hole 50304. This fundamentally prohibits any unilateral manual operation and achieves the protective effect of locking without authorization.

[0037] Meanwhile, the iron core 50101 on the isolation side and the grounding side are controlled by independent electrical circuits. The backend can control the corresponding circuits separately according to the equipment operating status (such as whether the isolation side is allowed to operate and whether the grounding side is in a prohibited state), laying a structural foundation for subsequent precise authorization on one side.

[0038] Authorized operation of electromagnetic limit switches requires both background authorization preparation and on-site travel triggering to be met. Taking manual operation on the isolation side as an example, the process is as follows: Based on equipment maintenance or emergency needs, the high-voltage power grid backend pre-authorizes the isolation side circuit of electromagnet 501 module (at this time, the grounding side circuit is still in a locked state), enabling the isolation side electromagnet 501 to retract after being triggered. On-site personnel pull up the pull pin 506 and slide the locking plate 503 in the isolation side operation direction (right side). During the sliding of the locking plate 503, the travel contact micro switch 508 in the lower left corner will be triggered. After the micro switch 508 is triggered, the electrical circuit of the isolation side electromagnet 501 is officially connected.

[0039] When the isolating electromagnet 501 is energized, its shaft-shaped iron core 50101 quickly retracts, releasing the sliding obstruction of the locking plate 503. The locking plate 503 can continue to slide to the right until the isolating mounting plate 502 is precisely coaxial with the second manual operation hole 50304.

[0040] When the isolation side mounting plate 502, the second manual operation hole 50304 and the fixing seat 505 are coaxial, a shaft-shaped part can be inserted to complete the mechanical fixation, ensuring that the locking plate position is stable and the operation is accurate and reliable during manual operation.

[0041] During the manufacturing process, this device's core components consist only of shafts and plates. Aside from a few purchased secondary components, it lacks complex transmission parts. Compared to structures like gears and racks that require high-precision meshing, the machining processes for shafts and plates are mature and simple, significantly reducing the difficulty and cost of manufacturing. Simultaneously, the streamlined component composition reduces material procurement and inventory management costs, resulting in a clear cost advantage throughout the entire lifecycle. Furthermore, the device adopts a standardized design specifically adapted to the mainstream screw-nut transmission structure of three-station products on the market. Installation and adaptation can be completed without large-scale structural modifications to existing equipment. This high degree of compatibility breaks through the application limitations of traditional dedicated structures, enabling rapid adaptation to different specifications of three-station mechanisms and significantly enhancing the product's marketability.

[0042] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A double-locking manual device, characterized in that, include: The interlocking manual assembly (5) has a top plate (6) and a bottom plate (2) on one side. The top plate (6) has symmetrical grooves, and both ends of the grooves are engraved. Two motors (1) are located between the top plate (6) and the bottom plate (2), and are far away from the interlocking manual assembly (5). The lead screw (3) is connected at one end to the drive ends of the two motors (1) and at the other end to a limit pin (504). The end of the limit pin (504) is adapted to the interlocking hand assembly (5). The two ends of the limit pin (504) are provided with a limit step structure (50401) and a fixing pin mounting hole (50402). A fixing pin is inserted and installed in the fixing pin mounting hole (50402). A spring is sleeved on the outside of the limiting pin (504) and located between the limiting step structure (50401) and the fixing pin; Nut (4) is fixed on the outside of lead screw (3) and located on the slide groove, and can be displaced along the length of the slide groove.

2. The double-interlocking manual device according to claim 1, characterized in that, The interlocking manual component (5) includes: Mounting plate (502) and locking plate (503), the mounting plate (502) and the locking plate (503) are arranged opposite to each other, one end of the limiting pin (504) is connected to the locking plate (503), and the other end passes through the mounting plate (502) and is connected to the lead screw (3); An electromagnet (501) is mounted on a mounting plate (502), with its end facing the lock plate (503). The fixing base (505) is provided at both ends of the locking plate (503) on the side away from the mounting plate (502); A pull pin (506) is provided in the locking plate (503); A micro switch (508) is symmetrically arranged on the side of the mounting plate (502) facing the lock plate (503); Limit switch (507) is fixed on the mounting plate (502) facing the lock plate (503) and located between two micro switches (508).

3. A double-interlocking manual device according to claim 2, characterized in that, The mounting plate (502) is provided with a fixed seat shaft mounting hole (50201), an electromagnet mounting hole (50202), a limit pin mounting hole (50203), a first manual operation hole (50204), a micro switch mounting hole (50205), a first pull pin mounting hole (50206), a round hole (50207), and a limit switch mounting hole (50208) in sequence. The electromagnet mounting hole (50202) is located above the mounting plate (502), and the electromagnet (501) is disposed in the electromagnet mounting hole (50202). The mounting holes (50201) of the fixed seat shaft are symmetrically opened below the mounting holes (50202) of the electromagnet. One end of the two fixed seats (505) is set in the mounting holes (50201), and the other end extends to the side of the locking plate (503) away from the mounting plate (502) and contacts the locking plate (503). The limiting pin mounting hole (50203) is opened on both sides above the electromagnet mounting hole (50202). The limiting pin (504) has a limiting step structure (50401) at one end connected to the locking plate (503). The limiting pin (504) has a fixing pin mounting hole (50402) at one end extending outward through the limiting pin mounting hole (50203). The micro switch mounting holes (50205) are symmetrically arranged at both ends of the mounting plate (502) below, and a micro switch (508) is connected in each of the two micro switch mounting holes (50205); the first pull pin mounting hole (50206) is opened below the electromagnet mounting hole (50202), and the pull pin (506) is arranged in the first pull pin mounting hole (50206); The first manual operation hole (50204) is opened on both sides of the pin mounting hole (50206); the limit switch mounting hole (50208) is opened between the two micro switch mounting holes (50205), and each of the two limit switch mounting holes (50208) is provided with a limit switch (507).

4. A double-interlocking manual device according to claim 3, characterized in that, Two electromagnets (501) are provided, and the two electromagnets (501) are arranged at intervals.

5. A double-interlocking manual device according to claim 3, characterized in that, The circumferential diameter of the manual operation hole is greater than the circumferential diameter of the fixed seat shaft mounting hole (50201), the limit pin mounting hole (50203), the micro switch mounting hole (50205), the pull pin mounting hole (50206), the round hole (50207), and the limit switch mounting hole (50208).

6. A double-interlocking manual device according to claim 2, characterized in that, The locking plate (503) is provided with an electromagnet core fixing hole (50301), a limit pin moving hole (50302), a fixing seat moving hole (50303), a second manual operation hole (50304), a micro switch switching structure (50305), a second pull pin mounting hole (50306), a limit switch switching structure (50307), and a fixing seat mounting hole (50308). The limiting pin moving holes (50302) are symmetrically opened above the locking plate (503), and the electromagnet core fixing holes (50301) are opened between the two limiting pin moving holes (50302); The fixed base moving hole (50303) is provided in two places, and the two fixed base moving holes (50303) are located below the electromagnet core fixing hole (50301); The limit switch switching structure (50307) is located below the two fixed base moving holes (50303); the second manual operation hole (50304) is located at both ends below the lock plate (503); The fixed base mounting hole (50308) is provided in two places, and the two fixed base mounting holes (50308) are located between the two second manual operation holes (50304); The micro switch switching structure (50305) is located at the bottom of the lock plate (503) and below the two second manual operation holes (50304); The limit switch switching structure (50307) is also located at the bottom of the lock plate (503) and between the two micro switch switching structures (50305).

7. A double-interlocking manual device according to claim 2, characterized in that, The limit switch switching structure (50307) is triangular.

8. A double-interlocking manual device according to claim 2, characterized in that, The micro switch switching structure (50305) is a toothed structure, with the tooth tips far away from the bottom of the lock plate (503).

9. A double-interlocking manual device according to claim 2, characterized in that, The electromagnet (501) has an iron core (50101) at its end, which is in contact with the lock plate (503).

10. A double-locking manual device according to claim 9, characterized in that, The electromagnet (501) has a wire outlet hole.

Images