Mechanical interlocking device for false touch prevention type fusion pole-mounted circuit breaker

Abstract

The invention discloses a false touch prevention type mechanical interlocking device for a fusion pole-mounted circuit breaker, and relates to the technical field of circuit breakers, the false touch prevention type mechanical interlocking device comprises a circuit breaker protection device, a busbar and a panel cover are respectively mounted on two sides of the circuit breaker protection device, and a current panel hole, a jack, a jack and an opening device groove are respectively formed in the panel cover; the opening and closing button and the opening device are respectively installed in the circuit breaking protection device, and the device responds to the live state in real time through electromagnetic induction, and electromechanical interlocking cooperative protection, maintenance process forced closed loop and elastic buffer design are adopted. The defects that traditional mechanical interlocking cannot dynamically sense the circuit state, protection is passive, the number of operation process loopholes is large, and a rigid structure is prone to being damaged are systematically overcome, through the scheme design, the lock cylinder is driven to move in real time through electromagnetic induction of an electrified coil and an iron column, when equipment is electrified, the lock cylinder is automatically retracted, and an operation hole loses efficacy; and resetting and unlocking after power failure. And the on-line unlocking risk is avoided, and the circuit state does not need to be pre-judged manually.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit breakers, in particular to a mechanical interlocking device for a fusion pole-mounted circuit breaker to prevent mistaken touch. BACKGROUND

[0002] In the power distribution network system, the pole-mounted circuit breaker as a key equipment is exposed to the outdoor environment for a long time, and the mistaken touch risk mainly comes from its special working scene and equipment structure. The personnel activities are complex in the outdoor environment, and the equipment lacks a dynamic protection mechanism for the real-time live state, so the mistaken touch risk always exists.

[0003] The traditional mechanical interlocking device has fundamental limitations in protection logic because it relies on physical limiting structure: it cannot real-time perceive whether the circuit is live, and can only passively protect through fixed mechanical structure. This directly leads to the fact that the operation and maintenance personnel must manually verify whether the equipment is de-energized when operating, and this lag operation process greatly increases the risk of misjudgment. Once the verification link is missed, the possibility of live operation will significantly increase. In the fusion circuit breaker, the layout distance between the high-voltage busbar and the operation panel is too close, which further amplifies the risk coefficient. This structure design makes even a slight operation mistake may cause high-voltage electric shock accident, becoming an important inducement for the escalation of mistaken touch risk.

[0004] The defects of the prior art exacerbate the accident risk from multiple dimensions: first, the opening device only relies on mechanical baffles for protection, and in the live state of the equipment, the baffles can still be forcibly broken through. Its protection effect completely depends on the experience judgment of the operator, and the lack of rigid constraints makes it difficult to control the risk of mistaken operation; second, after the opening operation is completed, the unlocking of the maintenance door needs an extra step, and this design is easy to make the operation and maintenance personnel miss the closing link of the grounding operation, which lays the foundation for electric shock hidden danger for subsequent maintenance work; third, the whole operation system lacks clear feedback of the live state, and there is no de-energizing mechanism between the operation hole and the lock core. When the equipment is live, the key is mistakenly inserted, which is likely to cause electric arc accident, and the instantaneous high-energy release poses a serious threat to personnel and equipment.

[0005] The above defects lead to a high accident rate, and there is an urgent need for a self-locking device that can real-time respond to the circuit state, so a mechanical interlocking device for a fusion pole-mounted circuit breaker to prevent mistaken touch is proposed to solve the above problems. SUMMARY

[0006] Therefore, the technical problem to be solved by the present application is to provide a mechanical interlocking device for a fusion pole-mounted circuit breaker to prevent mistaken touch to solve the problems in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solutions: a mechanical interlocking device for a fused column-mounted circuit breaker with an anti-accidental touch function, comprising a circuit breaker protection device, wherein a busbar and a panel cover are respectively mounted on both sides of the circuit breaker protection device, the panel cover being respectively provided with a current panel hole, a socket, a socket, and a trip device slot, the current panel, the opening and closing buttons, and the trip device being respectively mounted in the circuit breaker protection device, the mechanical interlocking device for a fused column-mounted circuit breaker with an anti-accidental touch function further comprising a linkage telescopic mechanism and a protective mechanism;

[0008] The linkage telescopic mechanism is provided in the circuit breaker protection device, and is used for power-on protection during opening and closing of the circuit breaker;

[0009] The protection mechanism is arranged in the tripping device, and is used to prevent the equipment from being misoperated while energized.

[0010] Preferably, the linkage telescopic mechanism includes a lock core, one end of which is slidably installed in the socket, and the other end of the opening and closing button is fixedly installed with a first sliding frame, and an L-support plate is slidably installed at the bottom of the first sliding frame, and both ends of the L-support plate are fixedly installed in the circuit breaker protection device.

[0011] Preferably, a pull plate is installed at the bottom of the first sliding frame, and a second sliding frame is installed on the pull plate near the upper end of the first sliding frame. The bottom of the second sliding frame is slidably installed on the support plate. A tension spring is fixedly installed on the end of the first sliding frame away from the lock cylinder, and the end of the tension spring away from the first sliding frame is fixedly installed on the second sliding frame. An iron column is fixedly installed in the middle of a side of the second sliding frame away from the first sliding frame.

[0012] Preferably, the outer surface of the iron column is provided with a power-carrying coil, a coil cover is fixedly mounted on the power-carrying coil, the coil cover is fixedly mounted on the L-support plate at one end away from the second sliding frame, and a connecting block is provided at one end of the iron column away from the tension spring, and the connecting block is mounted on the L-support plate.

[0013] Preferably, the linkage telescopic mechanism also includes a locking linkage component, the locking linkage component includes a fixed plate, the upper end of the fixed plate is fixedly installed in the circuit breaker protection device, a guide hole is opened in the middle of the lower end of the fixed plate, the lock core is arranged in the guide hole, and a protrusion is fixedly installed on the outer surface of the lock core.

[0014] Preferably, a rocker arm is rotatably connected to the middle part of the fixed plate, a sliding groove is provided at the upper end of the rocker arm, a T-shaped lock column is installed in the sliding groove, the upper end of the T-shaped lock column is slidably connected to the circuit breaker protection device and the panel cover, a reset spring is sleeved on the T-shaped lock column, one end of the reset spring is fixedly connected to the circuit breaker protection device, and the other end of the reset spring is fixedly connected to the T-shaped lock column.

[0015] Preferably, the protection mechanism comprises a power magnet installed in the circuit breaker protection device, a isolation cover is slidingly installed on the opening device, an iron plate is fixedly installed at one end of the isolation cover, and an elastic shaft is uniformly fixedly installed at the other end of the isolation cover.

[0016] Preferably, a buffer spring is sleeved on the outer surface of the elastic shaft, one end of the buffer spring is fixedly installed on the isolation cover, the other end of the buffer spring is fixedly connected with a fixed block, the fixed block is fixedly installed at the bottom of the circuit breaker protection device, and the power magnet is electrically connected with the connecting block.

[0017] Compared with the prior art, the mechanical interlocking device for the anti-misoperation type fused pole circuit breaker has the following beneficial effects:

[0018] 1. Dynamic live line locking: through electromagnetic induction of the power coil and the iron column, the lock core is driven in real time: when the equipment is live, the lock core is automatically retracted, the operation hole is disabled; after power-off, the lock is reset. The risk of live unlocking is eliminated, and manual prediction of the circuit state is not required.

[0019] 2. Double mechanism linkage protection: the linkage elastic mechanism and the protection mechanism are cooperated through electric signals, the connecting block 29 and the power magnet 41: the isolation cover is triggered to close at the moment of opening, and the opening device is mechanically covered; at the same time, the buffer spring provides flexible locking and anti-violence operation, and > 30N triggers the shear pin alarm.

[0020] 3. Maintenance door security closed loop: when grounding operation, the linkage baffle synchronously releases the maintenance door lock hole; the door opening > 10° triggers the micro switch, permanently locks the opening circuit, and prevents remote misoperation. Forming a mechanical logic chain of "grounding → access control → power-off", eliminating process loopholes.

[0021] 4. Fault tolerance design: the elastic shaft and the tension spring constitute a redundant buffer, which absorbs energy through elastic deformation when a sudden current impact occurs, avoiding rigid damage to the mechanism; at the same time, the reset spring ensures that the T-shaped lock column automatically returns after power-off, improving the robustness of the system. DETAILED DESCRIPTION

[0022] Figure 1 It is a three-dimensional structure schematic view of the present application;

[0023] Figure 2 It is an auxiliary schematic view of the three-dimensional structure of the present application;

[0024] Figure 3 It is a schematic view of the structure connection relationship of the linkage elastic mechanism of the present application;

[0025] Figure 4 It is an enlarged view of A in the present application; Figure 3

[0026] ​Figure 5 Fig. 1 is a schematic diagram of the connection relationship of the snap linkage assembly structure of the present application;

[0027] Figure 6 Fig. 2 is an enlarged view of B in Fig. 1; Figure 5

[0028] Figure 7 Fig. 3 is a schematic diagram of the connection relationship of the protection mechanism structure of the present application;

[0029] Figure 8 Fig. 4 is an enlarged view of C in Fig. 3. Figure 7

[0030] In the figure:

[0031] 1, circuit protection device; 11, current panel; 12, on-off button; 13, off device; 14, jack; 15, plug strip; 16, busbar; 17, panel cover;

[0032] 2, linkage extension mechanism; 21, lock core; 22, first sliding frame; 23, second sliding frame; 24, pull plate; 25, tension spring; 26, iron column; 27, coil cover; 28, energized coil; 29, connecting block;

[0033] 3, snap linkage assembly; 31, fixed plate; 32, protruding block; 33, swing lever; 34, sliding groove; 35, T-shaped lock column; 36, reset spring;

[0034] 4, protection mechanism; 41, energized electromagnet; 42, isolation cover; 43, iron plate; 44, fixed block; 45, extension shaft; 46, buffer spring. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] The present application will be further described in detail below according to the accompanying drawings and embodiments.

[0037] Embodiment, please refer to Figure 1 to Figure 8 shown:

[0038] ​​To solve the problems mentioned in the technical scheme, the embodiment of the present application provides a mechanical interlocking device for a mistaken touch prevention type fused pole circuit breaker, which comprises a circuit protection device 1, a busbar 16 and a panel cover 17 are respectively installed on the two sides of the circuit protection device 1, a current panel 11 hole, a jack 14 hole and a disconnecting device 13 slot are respectively formed in the panel cover 17, the current panel 11, a disconnecting and closing button 12 and the disconnecting device 13 are respectively installed in the circuit protection device 1, and the mechanical interlocking device for the mistaken touch prevention type fused pole circuit breaker further comprises a linkage telescopic mechanism 2 and a protection mechanism 4.

[0039] The linkage telescopic mechanism 2 is arranged in the circuit protection device 1, and is used for power protection during disconnecting and closing.

[0040] The protection mechanism 4 is arranged in the disconnecting device 13, and is used for preventing mistaken operation of the equipment under power.

[0041] Specifically, as shown in Figure 3 and Figure 4 , the lock core 21 is slidably installed at one end in the jack 14, the disconnecting and closing button 12 is fixedly installed at the other end with a first sliding frame 22, the first sliding frame 22 is slidably installed with an L-shaped supporting plate at the bottom, and the L-shaped supporting plate is fixedly installed at the two ends in the circuit protection device 1; the first sliding frame 22 is installed with a pull plate 24 at the bottom, the pull plate 24 is installed with a second sliding frame 23 near the upper end of the first sliding frame 22, the second sliding frame 23 is slidably installed at the bottom on the supporting plate, the first sliding frame 22 is fixedly installed with a tensile spring 25 at the end away from the lock core 21, the tensile spring 25 is fixedly installed on the second sliding frame 23 at the end away from the first sliding frame 22, and the second sliding frame 23 is fixedly installed with an iron column 26 at the middle of the side away from the first sliding frame 22; the iron column 26 is sleeved with a power coil 28 on the outer surface, the power coil 28 is fixedly installed with a coil cover 27, the coil cover 27 is fixedly installed on the L-shaped supporting plate at the end away from the second sliding frame 23, and the iron column 26 is provided with a connecting block 29 at the end away from the tensile spring 25, and the connecting block 29 is installed on the L-shaped supporting plate.

[0042] Wherein, by energizing coil 28, by energizing coil 28, by cutting the middle magnetic induction line of energizing coil 28 through iron column 26, iron column 26 can be driven to start sliding to the right side, that is, by energizing coil 28, second sliding frame 23 can be driven to start generating a right side push, and by the right side push of second sliding frame 23, pull plate 24 can drive first sliding frame 22 to slide to the left side on L-shaped support plate, and since lock cylinder 21 is fixedly installed on first sliding frame 22, when the overall device of circuit breaker protection device 1 is energized, lock cylinder 21 will slide to the left side, that is, lock cylinder 21 is separated from jack 14, at this time, the operator cannot unlock lock cylinder 21 through jack 14, and when energizing coil 28 is energized, first sliding frame 22 is connected with the ground wire, that is, first sliding frame 22 is connected with the ground wire, and when the power is off, the connection is automatically released, and lock cylinder 21 is slid to the right side again in jack 14, so that the operator can unlock and overhaul lock cylinder 21 through jack 14 when the power is off, thereby increasing the operation safety of the device and reducing the risk of live work. The electromagnetic induction of energizing coil 28 and iron column 26 drives the displacement of lock cylinder 21 in real time - the automatic retraction of the lock cylinder when the device is live makes the operation hole invalid, and the lock is reset after power off, thereby completely eliminating the risk of live unlocking without manual circuit state prediction.

[0043] Specifically, as shown in Figure 5 and Figure 6 The upper end of fixed plate 31 is fixedly installed in circuit breaker protection device 1, the lower end of fixed plate 31 is provided with a guide hole in the middle, lock cylinder 21 is arranged in the guide hole, and protrusion 32 is fixedly installed on the outer surface of lock cylinder 21.

[0044] A swing rod 33 is rotatably connected to the middle of fixed plate 31, a sliding groove 34 is formed in the upper end of swing rod 33, a T-shaped lock post 35 is installed in sliding groove 34, the upper end of T-shaped lock post 35 is slidably connected to circuit breaker protection device 1 and panel cover 17, a reset spring 36 is sleeved on T-shaped lock post 35, one end of reset spring 36 is fixedly connected to circuit breaker protection device 1, and the other end of reset spring 36 is fixedly connected to T-shaped lock post 35.

[0045] Wherein, the bottom end of swing rod 33 is within the rotating diameter range of protrusion 32, and the clockwise rotation of protrusion 32 will drive swing rod 33 to start counterclockwise swinging, that is, the counterclockwise swinging of swing rod 33 will drive T-shaped lock post 35 to separate from circuit breaker protection device 1 and panel cover 17, at this time, since panel cover 17 is clamped on circuit breaker protection device 1 through T-shaped lock post 35, when T-shaped lock post 35 is separated from circuit breaker protection device 1, the operator can overhaul the device by opening panel cover 17 at this time, and the device is powered off, thereby increasing the linkage and convenience of the device.

[0046] Specifically, as shown in Figure 7 and Figure 8As shown, the energizing electromagnet 41 is installed in the circuit protection device 1, the isolating cover 42 is slidingly installed on the disconnecting device 13, the iron plate 43 is fixedly installed at one end of the isolating cover 42, and the telescopic shaft 45 is uniformly fixedly installed at the other end of the isolating cover 42; the buffer spring 46 is sleeved on the outer surface of the telescopic shaft 45, one end of the buffer spring 46 is fixedly installed on the isolating cover 42, the fixed block 44 is fixedly connected to the other end of the buffer spring 46, and the bottom of the fixed block 44 is fixedly installed on the circuit protection device 1; the energizing electromagnet 41 is electrically connected with the energizing coil 28;

[0047] As shown, when the energizing coil 28 is electrified, the energizing electromagnet 41 will be electrified, and the energizing electromagnet 41 will have magnetism at this time. Figure 7 At this time, the iron plate 43 will be attracted by the magnetism of the energizing electromagnet 41, and the iron plate 43 will slide to the left at this time, and the disconnecting device 13 will be closed with the isolating cover 42 at this time. At this time, the buffer spring 46 will be stretched, and when the energizing electromagnet 41 is de-energized, the iron plate 43 will slide to the right under the elastic stretching of the buffer spring 46 at this time, and the disconnecting device 13 will be separated from the isolating cover 42 at this time. The operator can start to overhaul the disconnecting device 13 by using a wrench.

[0048] The specific implementation steps are as follows:

[0049] Step-by-step operation process and mechanical interlocking response;

[0050] Step 1: disconnecting operation unlocks the circuit breaker;

[0051] Preparation: A staff member wears insulating gloves, takes out a special operation handle with a unique coded key at the end of the handle, and confirms that the circuit breaker panel current panel 11 indicates “closing” with a red indicator light on;

[0052] Insert the handle, insert the handle into the circuit breaker disconnecting operation hole, and the ground switch hole is blocked by the lock tongue at this time. Interlocking response: the handle is inserted into the instant trigger limit sensor, and if the circuit breaker is not disconnected, the ground switch lock tongue remains in the extended state to physically block other operations; rotate the disconnecting device, rotate the handle disconnecting device button clockwise by 120° with a mechanical “click” sound; the main shaft cam track is rotated to the disconnecting position, the lock tongue of the ground interlocking module is retracted to expose the ground switch operation hole, and the handle is automatically popped up to indicate that the disconnecting is completed;

[0053] Safety verification: B staff member uses an electricity detector to confirm that the line is not electrified, and simultaneously detects the main shaft position through an angle sensing cam, and the disconnecting angle deviation is ≤2°;

[0054] Step 2: Grounding operation releases the access door; key transfer, A member pulls out the handle, the key is automatically inserted into the groove at the end of the handle, the power coil 28 is powered, and the power coil 28 is powered through the power coil 28, which can cut the middle magnetic induction line of the power coil 28 through the iron column 26, which can drive the iron column 26 to slide to the right, that is, the power coil 28 is powered to drive the second sliding frame 23 to slide to the right, and the second sliding frame 23 is pushed to the right to drive the first sliding frame 22 to slide to the left on the L-shaped support plate, and since the lock core 21 is fixedly installed on the first sliding frame 22, when the circuit breaker protection device 1 is powered, the lock core 21 will slide to the left, that is, the lock core 21 is separated from the jack 14, at this time the operator cannot unlock the lock core 21 through the jack 14, and when the power coil 28 is powered, the first sliding frame 22 and the ground wire are connected, that is, the first sliding frame 22 is connected with the ground wire when powered, and the connection is automatically released when powered off, and the lock core 21 slides to the right again in the jack 14, which can complete the unlocking of the lock core 21 by the operator through the jack 14 when powered off to maintain the equipment operation safety and reduce the risk of live working. Connect the grounding switch, insert the handle into the grounding switch operation hole, and rotate the hole 90° counterclockwise to the "closed" position;

[0055] Interlocking response: At the moment the grounding switch is closed, the interlocking baffle of the door lock module is pushed, the baffle is displaced by 15mm, the access door lock hole is exposed, and the handle is locked in the grounding switch hole to prevent accidental pulling out;

[0056] Anti-misoperation test: B member tries to forcibly open the circuit breaker - when the operating rod is blocked by the mechanical limiting block and the pushing force is greater than 30N, the shear pin alarm is triggered;

[0057] Table 1 shows the statistical table of the linkage effect used in the device of the present scheme;

[0058] Maloperation Device response Physical effect Charged closing Handle cannot be inserted into closing hole electronic lock + mechanical limit Operation hole covered by insulating baffle Ungrounded opening maintenance door Key cannot be inserted into door lock hole Linkage baffle covers lock hole visible red warning Forced closing when grounded Handle rotation is blocked Shear pin fracture requires replacement of spare parts Door not closed closing Closing handle jam Door access micro switch cuts off operation circuit

[0059] Step 3: Open the access door to enter the maintenance state;

[0060] Based on the above, the present scheme has the following advantages:

[0061] Door lock release, A member inserts a triangular key into the access door lock hole which is blocked by the baffle, rotates the key, and the interlocking baffle is completely reset, opens the door for maintenance, and pushes the access door shaft upward with a resistance of less than 5N·m. Interlocking response: When the door opening angle is greater than 10°, the internal microswitch triggers a signal, the circuit breaker opening circuit is permanently locked to prevent remote misoperation, and the maintenance personnel replace the faulty sensor while the grounding switch remains closed.

[0062] Dynamic live-line lockout: The lock cylinder 21 is driven in real time by electromagnetic induction of the power coil 28 and the iron column 26. When the device is live, the lock cylinder automatically retracts to disable the operating hole. After power off, it resets and unlocks. The risk of live-line unlocking is completely eliminated without manual prediction of circuit state.

[0063] Dual-mechanism collaborative protection: The linkage telescopic mechanism 2 and the protection mechanism 4 act collaboratively through electrical signals. The isolation cover 42 is triggered to close and mechanically cover the disconnecting device 13 at the moment of disconnection. The buffer spring 46 provides a soft lock against >30N violent operation, achieving active protection during the disconnection process.

[0064] Maintenance safety closed loop: When grounded, the linkage releases the maintenance door lock hole. When the door is opened >10°, the micro switch is permanently locked to disconnect the circuit, forming a mechanical logic chain of "grounding → access control → power off", eliminating the risk of ungrounded maintenance and remote misconnection.

[0065] Fault-tolerant design: The telescopic shaft 45 and the tension spring 25 form a redundant buffer mechanism to absorb sudden current impact energy. The reset spring 36 ensures that the T-shaped lock column 35 automatically resets after power off, improving system anti-interference ability and robustness.

[0066] In summary, the device responds to live-line state in real time through electromagnetic induction, collaboratively protects through electromechanical interlocking, forces the maintenance process into a closed loop, and designs a flexible buffer. It systematically solves the defects of traditional mechanical interlocking, such as inability to dynamically perceive circuit state, passive protection, many operation process vulnerabilities, and rigid structure vulnerability.

[0067] It should be noted that, in the present text, relational terms such as first and second are used merely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus that includes a list of elements does not only include those elements, but also includes other elements not expressly listed, or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0068] Although embodiments of the present application 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 hereto without departing from the principles and spirit of the application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A mechanical interlocking device for an anti-false-touch type fusion column mounted circuit breaker, comprising a circuit breaker protection device (1), wherein a busbar (16) and a panel cover (17) are respectively installed on both sides of the circuit breaker protection device (1), and the panel cover (17) is respectively provided with a current panel (11) hole, a socket (14), a socket (14) hole and a trip device (13) slot, wherein the current panel (11), the trip button (12) and the trip device (13) are respectively installed in the circuit breaker protection device (1), and characterized in that: The mechanical interlocking device for an anti-mistouch type fusion column mounted circuit breaker further comprises a linkage telescopic mechanism (2) and a protection mechanism (4); The linkage telescopic mechanism (2) is arranged in the circuit breaker protection device (1), and the linkage telescopic mechanism (2) is used for power-on protection during opening and closing of the circuit breaker; The protection mechanism (4) is arranged in the tripping device (13), and the protection mechanism (4) is used to prevent erroneous operation of the equipment when it is energized.

2. The mechanical interlocking device for an anti-accidental-touch fused column-mounted circuit breaker according to claim 1, characterized in that: The linkage telescopic mechanism (2) comprises a lock core (21), one end of the lock core (21) is slidably mounted in the socket (14), the other end of the opening and closing button (12) is fixedly mounted with a first sliding frame (22), an L-shaped support plate is slidably mounted on the bottom of the first sliding frame (22), and both ends of the L-shaped support plate are fixedly mounted in the circuit breaker protection device (1).

3. The mechanical interlocking device for an anti-accidental-touch fused column-mounted circuit breaker according to claim 2, characterized in that: A pull plate (24) is installed at the bottom of the first sliding frame (22), a second sliding frame (23) is installed near the upper end of the pull plate (24) and the bottom of the second sliding frame (23) is slidably installed on the support plate.

4. The mechanical interlocking device for an anti-accidental-touch type fused column mounted circuit breaker according to claim 3, characterized in that: A tension spring (25) is fixedly mounted on one end of the first sliding frame (22) away from the lock core (21), and an end of the tension spring (25) is fixedly mounted on the second sliding frame (23) away from the first sliding frame (22). An iron column (26) is fixedly mounted on the middle of one side of the second sliding frame (23) away from the first sliding frame (22).

5. The mechanical interlocking device for an anti-accidental-touch fused column mounted circuit breaker according to claim 4, characterized in that: The outer surface of the iron column (26) is provided with an energized coil (28), a coil cover (27) is fixedly mounted on the energized coil (28), and the coil cover (27) is fixedly mounted on the L-support plate at one end away from the second sliding frame (23). The end of the iron column (26) away from the tension spring (25) is provided with a connecting block (29), and the connecting block (29) is mounted on the L-support plate.

6. The mechanical interlocking device for an anti-accidental-touch fused column mounted circuit breaker according to claim 5, characterized in that: The linkage telescopic mechanism (2) further comprises a locking linkage assembly (3), the locking linkage assembly (3) comprising a fixing plate (31), the upper end of the fixing plate (31) being fixedly mounted in the circuit breaker protection device (1), a guide hole being provided in the middle of the lower end of the fixing plate (31), the lock core (21) being arranged in the guide hole, and a protrusion (32) being fixedly mounted on the outer surface of the lock core (21).

7. The mechanical interlocking device for an anti-accidental-touch fused column-mounted circuit breaker according to claim 6, characterized in that: The middle portion of the fixed plate (31) is rotatably connected to a swing rod (33), the upper end of the swing rod (33) is provided with a slide groove (34), a T-shaped lock column (35) is installed in the slide groove (34), and the upper end of the T-shaped lock column (35) is slidably connected to the circuit breaker protection device (1) and the panel cover (17).

8. The mechanical interlocking device for an anti-accidental-touch type fused column mounted circuit breaker according to claim 7, characterized in that: A return spring (36) is sleeved on the T-shaped lock column (35), one end of the return spring (36) is fixedly connected to the circuit breaker protection device (1), and the other end of the return spring (36) is fixedly connected to the T-shaped lock column (35).

9. The mechanical interlocking device for an anti-accidental-touch fused column-mounted circuit breaker according to claim 1, characterized in that: The protection mechanism (4) comprises a conducting electromagnet (41), the conducting electromagnet (41) being installed in the circuit breaker protection device (1), an isolation cover (42) being slidably mounted on the opening device (13), an iron plate (43) being fixedly mounted on one end of the isolation cover (42), and a telescopic shaft (45) being evenly fixedly mounted on the other end of the isolation cover (42).

10. The mechanical interlocking device for an anti-accidental-touch type fused column mounted circuit breaker according to claim 9, characterized in that: A buffer spring (46) is sleeved on the outer surface of the telescopic shaft (45), one end of the buffer spring (46) is fixedly mounted on the isolation cover (42), and the other end of the buffer spring (46) is fixedly connected to a fixed block (44), the bottom of the fixed block (44) is fixedly mounted on the circuit breaker protection device (1), and the electromagnet (41) is electrically connected to the connecting block (29).

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