Anti-misoperation high-voltage isolating switch

Abstract

The invention provides an anti-misoperation high-voltage isolation switch, and relates to the field of isolation switches. An insulating pillar mounted on the base; the conductive knife switch is arranged on the insulating supporting column; the operating mechanism comprises a transmission crank arm and an insulating pull rod for connecting the transmission crank arm with the conductive knife switch; the anti-misoperation verification mechanism comprises a sequence verification assembly, a locking assembly and a state feedback assembly, the sequence verification assembly comprises a rotatable verification disc and a limiting unit, verification tooth grooves of different shapes are formed in the periphery of the verification disc, the locking assembly comprises a slidable lock rod and an electromagnetic driver, the lock rod is provided with a spring bolt detachably clamped with the verification tooth grooves, and the state feedback assembly is connected with the electromagnetic driver. The state feedback assembly comprises an indicating piece and a detection sensor which are coaxially connected with the verification disc; and the interlocking mechanism is arranged between the operating mechanism and the anti-misoperation verification mechanism and comprises a slidable sliding sleeve and a shifting block arranged on the sliding sleeve. According to the invention, a self-verification, self-locking and self-feedback operation safety system is formed, and the anti-misoperation capability and the operation safety level are improved.

Description

Technical Field

[0001] This invention relates to the field of disconnecting switches, and more particularly to a high-voltage disconnecting switch designed to prevent misoperation. Background Technology

[0002] High-voltage disconnect switches are critical equipment in power systems for electrical isolation and ensuring maintenance safety. Their reliable opening and closing operations directly affect the stability of the power grid and the safety of personnel. In complex substation environments, the operation of disconnect switches must follow a strict logical sequence to prevent serious maloperation accidents such as opening and closing under load. Therefore, the equipment itself must possess mandatory anti-misoperation interlocking capabilities and clear status indication capabilities to meet the requirements of standardized and safe operation and maintenance.

[0003] Existing high-voltage disconnect switches typically rely on external, independent electrical or mechanical interlocking devices for their anti-misoperation functions, or even primarily on the operator's procedural awareness and experience. This operating mode carries the risk of misoperation because external interlocks can be bypassed or fail, and there is a lack of built-in, non-skippable sequential verification mechanisms for the operating steps themselves. Furthermore, the status indications of common disconnect switches are not direct or reliable enough, and the linkage between the operating mechanism and the interlocking mechanism is simple or absent, failing to provide positive verification feedback and mandatory sequential guidance during operation. In addition, the lack of convenient and reliable mechanical emergency unlocking methods in emergency or abnormal situations may hinder the rapid handling of faults. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a high-voltage disconnect switch that is protected against misoperation, in view of the above-mentioned defects in the prior art.

[0005] Therefore, this embodiment provides a high-voltage disconnect switch designed to prevent misoperation, in order to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A high-voltage disconnect switch designed to prevent misoperation includes: a base; An insulating support post is provided on the base; A conductive switch is disposed on the insulating support; The operating mechanism includes a transmission crank arm and an insulating pull rod disposed between the transmission crank arm and the conductive switch. A misoperation prevention verification mechanism, comprising a sequential verification component, a locking component, and a status feedback component; The sequential verification component includes a rotatably mounted verification disk and a limiting unit that restricts the unidirectional rotation of the verification disk. The periphery of the verification disk is provided with multiple verification tooth grooves of different shapes. The locking assembly includes a slidably disposed locking rod and an electromagnetic actuator for driving the locking rod, the locking rod having a locking tongue that can be disengaged from the verification tooth groove; The status feedback component includes an indicator coaxially connected to the verification disk and a sensor for detecting the position of the indicator; An interlocking mechanism is provided between the operating mechanism and the anti-misoperation verification mechanism; The interlocking mechanism includes a slidably mounted sliding sleeve and a lever mounted on the sliding sleeve.

[0007] Preferably, the sequential verification component further includes a driven gear coaxially connected to the verification disk, a driving gear meshing with the driven gear, and an input shaft connected to and driving the driving gear to rotate.

[0008] Preferably, the input shaft is slidably connected to the sliding sleeve; The sliding sleeve is provided with a keyway, and the input shaft is provided with a connecting key that slides and engages with the keyway. The input shaft is also provided with an anti-disengagement retaining ring for limiting the axial displacement of the sliding sleeve and the input shaft.

[0009] Preferably, the limiting unit includes a limiting seat, a swaying anti-return lever disposed on the limiting seat, and an elastic component disposed between the anti-return lever and the limiting seat.

[0010] Preferably, the locking assembly further includes a guide cylinder and a reset member, wherein the locking rod is slidably connected to the guide cylinder, and the reset member is disposed between the locking rod and the guide cylinder.

[0011] Preferably, the lever has a first inclined surface; The transmission crank arm is provided with a second inclined surface that cooperates with the first inclined surface.

[0012] Preferably, the locking component further includes an unlocking mechanism; The unlocking mechanism includes a rotatably disposed unlocking handle; The unlocking handle is connected to the locking rod via a pull rope.

[0013] Preferably, the anti-misoperation verification mechanism further includes an auxiliary positioning component disposed on the base; The auxiliary positioning component is equipped with a wedge-shaped locking block; The sliding sleeve is provided with a ramp surface that cooperates with the wedge-shaped locking block. When the sliding sleeve slides to the designated position, that is, when it slides to the engagement position of the wedge-shaped locking block 524 of the auxiliary positioning member 523, the ramp surface engages with the wedge-shaped locking block.

[0014] Preferably, a positioning feedback mechanism is provided between the sliding sleeve and the input shaft; The positioning feedback mechanism includes a ball bearing disposed within the sliding sleeve and a compression spring that provides clamping force to the ball bearing.

[0015] Preferably, the transmission crank arm is further provided with an operating lever; The operating lever is equipped with a limiting rod at its bottom; The base is provided with a limiting groove, and the limiting rod is slidably disposed in the limiting groove.

[0016] The present invention adopts the above technical solution and has the following technical effects compared with the prior art: (1) Implement forced sequence verification to prevent misoperation: The built-in verification panel and locking component ensure that the operation steps must be strictly performed in the preset sequence, and cannot skip steps or reverse the operation. From the mechanical structure, it prevents malicious misoperation such as opening and closing the circuit under load.

[0017] (2) Achieve interlocking mechanism linkage and reliable operation: The operating mechanism and the verification mechanism are rigidly connected through the interlocking mechanism to form an interlocking logic that locks the mechanism if the verification fails and the verification cannot continue if the operation is not in place, thereby improving the overall integrity and reliability of the operation.

[0018] (3) Achieve clear feedback, accurate positioning, and emergency support: Provide intuitive status indications and remote signal feedback. Through the positioning feedback mechanism and auxiliary positioning components, key operation steps have a clear tactile feel and a sense of positioning. The independent mechanical unlocking mechanism ensures that manual operation is still possible in emergency situations, improving the availability of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the verification panel and sliding sleeve of a high-voltage disconnect switch designed to prevent misoperation according to the present invention. Figure 2 This is a schematic diagram of the base of a high-voltage disconnect switch designed to prevent misoperation according to the present invention; Figure 3 This is a schematic diagram of a verification panel for a high-voltage disconnect switch designed to prevent misoperation according to the present invention; Figure 4 This is a schematic diagram of a locking component for a high-voltage disconnect switch designed to prevent misoperation, according to the present invention. Figure 5 This is a schematic diagram of an anti-misoperation verification mechanism for a high-voltage disconnect switch according to the present invention; Figure 6 This is a schematic diagram of the limiting rod and limiting groove of a high-voltage disconnect switch designed to prevent misoperation according to the present invention; Figure 7 This is a schematic diagram of the sliding sleeve and input shaft of a high-voltage disconnect switch designed to prevent misoperation according to the present invention; Figure 8 This is a schematic diagram of a limit unit for a high-voltage disconnect switch designed to prevent misoperation according to the present invention; Figure 9 This is a schematic diagram of a positioning feedback mechanism for a high-voltage disconnect switch designed to prevent misoperation according to the present invention. Figure 10 This is a schematic diagram of the transmission crank arm of a high-voltage disconnect switch designed to prevent misoperation according to the present invention.

[0020] The reference numerals in the attached drawings are as follows: 1. Base; 101. Limiting groove; 2. Insulating support; 3. Conductive switch; 4. Operating mechanism; 401. Transmission crank arm; 402. Insulating pull rod; 403. Operating lever; 404. Limiting rod; 5. Anti-misoperation verification mechanism; 501. Sequential verification component; 502. Locking component; 503. Status feedback component; 504. Verification disc; 505. Limiting unit; 506. Verification tooth groove; 507. Locking rod; 508. Electromagnetic actuator; 509. Locking tongue; 510. Indicator; 511. Sensor; 512. Driven gear; 5 13. Drive gear; 514. Input shaft; 515. Limit seat; 516. Anti-return rocker arm; 517. Elastic component; 518. Guide cylinder; 519. Reset component; 520. Unlocking mechanism; 521. Unlocking handle; 522. Pull rope; 523. Auxiliary positioning component; 524. Wedge-shaped block; 6. Interlocking mechanism; 601. Sliding sleeve; 602. Pulley; 603. Keyway; 604. Connecting key; 605. First inclined plane; 606. Second inclined plane; 607. Slope surface; 608. Positioning feedback mechanism; 609. Ball bearing; 610. Compression spring; 7. Anti-disengagement retaining ring. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] 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] Example 1

[0024] As attached Figures 1 to 10 The high-voltage disconnect switch shown has a base 1 with a flat mounting plate, which is a box-type or frame-type structure. The base provides space to accommodate the operating mechanism 4 and the anti-misoperation verification mechanism 5. Multiple threaded holes or locating pin holes are machined on the base 1 for fixing other components. The limiting groove 101 is an arc-shaped through groove or blind groove formed on the upper surface or side plate of the base 1.

[0025] The insulating support 2 is a columnar structure made of ceramic or composite insulating material. Its bottom is fixed to the base 1 by flanges and bolts, and its top is provided with a mounting bracket for the conductive switch 3. The conductive switch 3 is a long strip-shaped conductive body. One end of its body is hinged to the bracket at the top of the insulating support 2 by a rotating shaft, and the other end is provided with a blade that cooperates with the stationary contact. The conductive switch 3 can swing between the open and closed positions around its hinge axis.

[0026] The operating mechanism 4 includes a transmission crank arm 401, an insulating pull rod 402, an operating lever 403, and a limiting rod 404. The transmission crank arm 401 is a lever with at least two arms, rotatably mounted on the base 1 via a central pivot. The insulating pull rod 402 is made of epoxy resin or silicone rubber, with one end hinged to one arm of the transmission crank arm 401 and the other end hinged to the blade of the conductive switch 3. The operating lever 403 is fixedly connected to the other arm of the transmission crank arm 401 to receive external operating force. The limiting rod 404 is located at the base of the operating lever 403.

[0027] The anti-misoperation verification mechanism 5 includes a sequential verification component 501, a locking component 502, and a status feedback component 503. The sequential verification component 501 includes a verification disc 504, a limit unit 505, verification tooth grooves 506, a driven gear 512, a driving gear 513, and an input shaft 514. The verification disc 504 is a disc-shaped part rotatably mounted on a mounting plate vertically fixed to the left side of the base 1 via a rotating shaft, with the disc surface facing inwards. Verification tooth grooves 506 are machined on its circumferential edge. The limit unit 505 includes a limit seat 515, a check rocker arm 516, and an elastic component 517, used to limit the unidirectional rotation of the verification disc 504. The driven gear 512 is coaxially fixed to the verification disc 504. The driving gear 513 meshes with the driven gear 512. The input shaft 514 is connected to the driving gear 513. The locking assembly 502 includes a locking lever 507, an electromagnetic actuator 508, a locking tongue 509, a guide cylinder 518, a reset member 519, and an unlocking mechanism 520. The locking lever 507 is a rod-shaped part with a locking tongue 509 at its front end. The electromagnetic actuator 508 drives the locking lever 507. The guide cylinder 518 provides a sliding guide for the locking lever 507. The reset member 519 provides a reset force for the locking lever 507. The unlocking mechanism 520 includes an unlocking handle 521 and a pull cord 522 for manual unlocking. The status feedback assembly 503 includes an indicator 510 and a sensor 511. The indicator 510 is coaxially connected to the verification disc 504. The sensor 511 is fixed to the base 1 to detect the position of the indicator 510.

[0028] The interlocking mechanism 6 includes a sliding sleeve 601 and a lever 602, and is disposed between the operating mechanism 4 and the anti-misoperation verification mechanism 5. The sliding sleeve 601 is a sleeve part that slidably fits onto the input shaft 514. Its inner hole has an axial keyway 603, and its outer wall has a lever 602 and a ramp surface 607. The lever 602 is fixed to the outer wall of the sliding sleeve 601. It is a horizontally bent arm-shaped structure, generally L-shaped, with one end fixed to the sliding sleeve 601 and the other end extending towards the center of the equipment. The end of this extended end is machined with a first ramp surface 605. A connecting key 604 that mates with the keyway 603 of the sliding sleeve 601 is fixed on the input shaft 514, and an anti-disengagement retaining ring 7 is provided at its end. The transmission crank arm 401 has a second ramp surface 606 that mates with the first ramp surface 605 of the lever 602. The auxiliary positioning component 523 is fixed to the upper surface of the base 1 and located at the front end of the sliding path of the slide sleeve 601, and is provided with a wedge-shaped locking block 524. The positioning feedback mechanism 608 includes a ball 609 and a compression spring 610, which are installed in the radial hole of the slide sleeve 601.

[0029] The working process of the anti-misoperation type high-voltage disconnect switch is as follows: In the initial open state, the verification panel 504 is locked by the locking tongue 509, the sliding sleeve 601 is in the disengaged position, and operation is prohibited. After successful verification, the electromagnetic actuator 508 releases the locking tongue 509, and the operator pushes the sliding sleeve 601 to the working position, connecting it to the input shaft 514 via a key and locking it in place, thereby connecting the power link between the operating mechanism 4 and the anti-misoperation verification mechanism 5. Subsequently, the closing operation is performed. The operating force drives the conductive switch 3 to close through the transmission crank arm 401 and the insulating pull rod 402, and also pushes the toggle block 602 through the transmission crank arm 401, driving the sliding sleeve 601, the input shaft 514, and the gear system, so that the verification panel 504 rotates synchronously according to a predetermined program. When the circuit is closed, the second inclined surface 606 on the transmission crank arm 401 and the first inclined surface 605 on the toggle block 602 are tightly engaged, mechanically locking the sliding sleeve 601 to prevent it from retracting; simultaneously, the locking tongue 509 can re-engage with the verification disc 504 corresponding to the verification tooth groove 506 for locking. To open the circuit, the interlock must first be released to separate the inclined surfaces before the sliding sleeve 601 can be pulled back to the separated position and the opening operation can be performed. In an emergency, the unlocking handle 521 can be manually operated to directly pull the locking tongue 509 to disengage for emergency operation.

[0030] Example 2

[0031] Based on Embodiment 1, the solution in Embodiment 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 10 As shown below, see details: Furthermore, the driven gear 512 is coaxially fixedly connected to the verification disk 504 via a flat key, and the driving gear 513 is connected to the input shaft 514 via a spline. When the input shaft 514 rotates, it drives the driving gear 513 to rotate. The teeth of the driving gear 513 mesh with the teeth of the driven gear 512, thereby driving the driven gear 512 and the verification disk 504 coaxially connected to it to rotate synchronously. Deep groove ball bearings are provided at both ends of the shaft of the driven gear 512. The deep groove ball bearings are installed in the gear support seat, and the gear support seat is fixed on the base 1. The input shaft 514 passes through the bushing provided on the base 1. A wear-resistant bushing is installed in the bushing, and a retaining ring is provided at the end of the input shaft 514 to prevent the driving gear 513 from axially moving.

[0032] Furthermore, the input shaft 514 and the sliding sleeve 601 are circumferentially fixedly connected by a connecting key 604 fixed on the shaft and a keyway 603 formed in the inner hole of the sliding sleeve 601. The connecting key 604 has a rectangular cross-section, and the sliding sleeve 601 can slide along the axial direction of the connecting key 604 and the input shaft 514. The anti-disengagement retaining ring 7 is an open elastic retaining ring, which is installed in the annular retaining ring groove pre-machined at the end of the input shaft 514 and located on the axial end side of the sliding sleeve 601. When the sliding sleeve 601 slides to its limit position along the axial direction of the input shaft 514, the end face of the sliding sleeve 601 contacts the anti-disengagement retaining ring 7, thereby restricting further axial movement of the sliding sleeve 601 and preventing the sliding sleeve 601 from accidentally disengaging from the input shaft 514. A grease groove is also provided in the sliding fit section between the sliding sleeve 601 and the input shaft 514 to reduce sliding friction.

[0033] Furthermore, the limiting seat 515 is fixedly mounted on the base 1 by bolts, and the anti-rebound swing rod 516 is oscillatingly connected to the side wall of the limiting seat 515 by a pin. One end of the anti-rebound swing rod 516 has a tip that can be disengaged from the verification groove 506 around the verification disc 504. The elastic component 517 is a helical torsion spring, which is sleeved on the pin connecting the anti-rebound swing rod 516. Its two ends press against the limiting seat 515 and the anti-rebound swing rod 516 respectively, providing a torque to keep the tip of the anti-rebound swing rod 516 pressed against the periphery of the verification disc 504. When the verification disc 504 rotates in the permitted direction, the inclined surface of the verification slot 506 pushes the tip of the anti-return lever 516, causing it to swing against the torque of the elastic component 517, thus allowing the verification slot 506 to pass through. After the verification slot 506 has completely rotated, the torque of the elastic component 517 drives the anti-return lever 516 to swing back to its original position, and its tip falls into the next verification slot 506. When the verification disc 504 attempts to rotate in the opposite direction, the tip of the anti-return lever 516 will jam on the vertical side of the verification slot 506, preventing the verification disc 504 from reversing.

[0034] Furthermore, the guide cylinder 518 is fixedly mounted on the base 1 via a flange on its outer wall and bolts, and has a smooth cylindrical guide hole machined inside. The locking rod 507 is a cylindrical rod structure, with its rod body slidingly engaged with the guide hole of the guide cylinder 518. The front end of the locking rod 507 is provided with a locking tongue 509, and its rear end is connected to the output end of the electromagnetic actuator 508. The reset element 519 is a compression helical spring, which is sleeved on the rod body of the locking rod 507 and placed between one end face inside the guide cylinder 518 and the annular shoulder provided on the locking rod 507. When the electromagnetic actuator 508 is energized, its output end pushes the locking rod 507 to overcome the elastic force of the compression helical spring and slide forward along the guide hole of the guide cylinder 518, causing the locking tongue 509 to extend and engage with the verification groove 506 on the verification disc 504, thereby achieving locking. When the electromagnetic actuator 508 is de-energized, the elastic force stored in the compressed helical spring is released, pushing the annular shoulder on the locking rod 507, causing the locking rod 507 to slide backward and reset along the guide cylinder 518, so that the locking tongue 509 retracts and disengages from the verification tooth groove 506.

[0035] Furthermore, the lever 602 is fixedly installed on the outer peripheral wall of the sliding sleeve 601, and its first inclined surface 605 is machined on the end edge of the lever 602 facing the transmission crank arm 401. The second inclined surface 606 on the transmission crank arm 401 is located at its side arm position corresponding to the lever 602. When the sliding sleeve 601 is controlled to slide axially along the input shaft 514, it drives the lever 602 to move synchronously. The first inclined surface 605 of the lever 602 gradually approaches and contacts the second inclined surface 606 of the transmission crank arm 401. During the contact and continued relative movement of the two inclined surfaces, the first inclined surface 605 slides along the surface of the second inclined surface 606. Through the guiding effect of the inclined surfaces, the linear motion of the lever 602 and the sliding sleeve 601 is converted into a lateral thrust or clearance space on the transmission crank arm 401, forcing the transmission crank arm 401 to undergo a small angular displacement around its fulcrum or releasing the interference with the transmission crank arm 401, thereby realizing the state linkage or unlocking between the interlocking mechanism 6 and the operating mechanism 4. The surface of the bevel is hardened to enhance its wear resistance.

[0036] Furthermore, the unlocking mechanism 520 also includes a mounting bracket fixedly mounted on the base 1 or the operation panel, on which the unlocking handle 521 is rotatably mounted via a pivot. The unlocking handle 521 has a handle body for easy gripping and a connecting arm for connecting the pull cord 522. The pull cord 522 is a metal soft cord or a high-strength fiber cord, one end of which is hinged to the connecting arm of the unlocking handle 521 via a cord end fixing member, and the other end passes through a guide hole provided on the guide cylinder 518 or a nearby structure, and is hinged to a connecting lug provided on the rear end or body of the locking rod 507. In the natural state, the elasticity of the reset member 519 keeps the locking rod 507 in a retracted state, and the pull cord 522 is in a slack or slightly tensioned state. When emergency manual unlocking is required, the operator moves the unlocking handle 521 in the designated direction. The unlocking handle 521 rotates around its axis, and its connecting arm pulls the pull rope 522. The pull rope 522 overcomes the elastic force of the reset piece 519 and pulls the locking rod 507 backward in the guide cylinder 518, thereby disengaging the locking tongue 509 from the verification tooth groove 506, realizing manual mechanical unlocking.

[0037] Furthermore, the auxiliary positioning component 523 is bolted to the upper surface of the base 1 at the front end of the sliding path of the slide sleeve 601, and its main body is a block structure. A wedge-shaped locking block 524 is formed on the top of the auxiliary positioning component 523, and it has a guide ramp and a vertical positioning surface intersecting the guide ramp. The slope surface 607 on the outer wall of the slide sleeve 601 has an inclination angle corresponding to the guide ramp of the wedge-shaped locking block 524. When the sliding sleeve 601 slides axially along the input shaft 514 to the designated working position, the ramp surface 607 on the sliding sleeve 601 begins to contact the guide ramp surface of the wedge-shaped block 524 and slides along the guide ramp surface until the end of the ramp surface 607 passes the highest point of the wedge-shaped block 524. At this time, the vertical positioning surface of the wedge-shaped block 524 fits and locks tightly with the vertical surface corresponding to the root of the ramp surface 607 on the sliding sleeve 601, thereby providing auxiliary constraint and precise positioning of the position of the sliding sleeve 601 in the axial direction and providing tactile feedback that the operation is in place.

[0038] Furthermore, the mounting hole of the positioning feedback mechanism 608 is radially opened within the wall thickness of the sleeve 601. This mounting hole, from the inside out, accommodates a ball 609, a compression spring 610, and a threaded plug for adjusting the preload of the compression spring 610 and sealing the outer end of the mounting hole. The compression spring 610 continuously applies a radially inward compressive force to the ball 609, forcing a portion of the ball 609 to protrude from the inner surface of the sleeve 601. At least one spherical recess, matching the shape of the ball 609, is machined on the outer circumference of the shaft segment corresponding to the input shaft 514 and the ball 609. When the sleeve 601 slides axially along the input shaft 514 to a specific working position, the ball 609, under the action of the compression spring 610, precisely engages with the spherical recess on the input shaft 514. At this point, the operator can feel a clear positioning sensation, possibly accompanied by a sound. Simultaneously, the engagement between the ball 609 and the recess generates a certain radial constraint force, temporarily restricting the arbitrary axial sliding of the sleeve 601. When it is necessary to continue moving the sliding sleeve 601, the applied axial operating force must overcome the radial component force applied by the compression spring 610 through the ball 609, so that the ball 609 is squeezed out of the recess and rolls on the cylindrical surface of the input shaft 514, and the sliding sleeve 601 can continue to slide until the next positioning point.

[0039] Furthermore, the base of the operating lever 403 is fixedly connected to the arm of the transmission crank arm 401 via a flange and bolts, or is integrally cast with the transmission crank arm 401, with its shaft extending upwards for the operator to grip. A limiting lever 404 is located at the base of the operating lever 403. The limiting groove 101 on the base 1 is an arc-shaped groove, the center of which coincides with the rotation center of the transmission crank arm 401. When the operator moves the operating lever 403, the operating lever 403 drives the transmission crank arm 401 to rotate around its axis. The rotational movement of the transmission crank arm 401 causes the limiting lever 404 at the base of the operating lever 403 to swing accordingly, and the limiting lever 404 slides within the arc-shaped groove of the limiting groove 101. The two ends of the limit groove 101 correspond to the fully open and fully closed states of the conductive switch 3, respectively. When the limit rod 404 slides to any end of the limit groove 101, its side contacts and abuts against the end wall of the limit groove 101, thereby mechanically restricting the transmission crank arm 401 and the operating rod 403 from continuing to rotate in that direction and preventing over-operation.

[0040] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly, the accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other. Finally, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-voltage disconnect switch designed to prevent misoperation, characterized in that, include: Base (1); An insulating support (2) is disposed on the base (1); A conductive switch (3) is disposed on the insulating support (2); Operating mechanism (4), the operating mechanism (4) includes a transmission crank arm (401) and an insulating pull rod (402) disposed between the transmission crank arm (401) and the conductive switch (3). The anti-misoperation verification mechanism (5) includes a sequence verification component (501), a locking component (502), and a status feedback component (503). The sequential verification component (501) includes a verification disk (504) that is rotatably disposed and a limiting unit (505) that restricts the unidirectional rotation of the verification disk (504). The periphery of the verification disk (504) is provided with a plurality of verification grooves (506) of different shapes. The locking assembly (502) includes a slidably disposed locking bar (507) and an electromagnetic actuator (508) for driving the locking bar (507), the locking bar (507) having a locking tongue (509) that can be disengaged from the verification tooth groove (506). The status feedback component (503) includes an indicator (510) coaxially connected to the verification disk (504) and a sensor (511) for detecting the position of the indicator (510). An interlocking mechanism (6) is provided between the operating mechanism (4) and the anti-misoperation verification mechanism (5); The interlocking mechanism (6) includes a slidably disposed sleeve (601) and a lever (602) disposed on the sleeve (601).

2. The high-voltage disconnect switch for preventing misoperation according to claim 1, characterized in that: The sequential verification component (501) further includes a driven gear (512) coaxially connected to the verification disk (504), a driving gear (513) meshing with the driven gear (512), and an input shaft (514) connected to and driving the driving gear (513) to rotate.

3. A high-voltage disconnect switch designed to prevent misoperation according to claim 2, characterized in that: The input shaft (514) is slidably connected to the sliding sleeve (601); The sliding sleeve (601) is provided with a keyway (603), and the input shaft (514) is provided with a connecting key (604) that slides and engages with the keyway (603). The input shaft (514) is also provided with an anti-disengagement ring (7) for limiting the axial displacement of the sliding sleeve (601) and the input shaft (514).

4. A high-voltage disconnect switch for preventing misoperation according to claim 1, characterized in that: The limiting unit (505) includes a limiting seat (515), a swaying anti-return lever (516) disposed on the limiting seat (515), and an elastic member (517) disposed between the anti-return lever (516) and the limiting seat (515).

5. A high-voltage disconnect switch designed to prevent misoperation according to claim 1, characterized in that: The locking assembly (502) further includes a guide cylinder (518) and a reset member (519). The locking rod (507) is slidably connected to the guide cylinder (518), and the reset member (519) is disposed between the locking rod (507) and the guide cylinder (518).

6. A high-voltage disconnect switch for preventing misoperation according to claim 1, characterized in that: The lever (602) is provided with a first inclined surface (605); The transmission crank arm (401) is provided with a second inclined surface (606) that cooperates with the first inclined surface (605).

7. A high-voltage disconnect switch for preventing misoperation according to claim 5, characterized in that: The locking component (502) also includes an unlocking mechanism (520); The unlocking mechanism (520) includes an unlocking handle (521) that is rotatably disposed. The unlocking handle (521) is connected to the locking rod (507) via a pull rope (522).

8. A high-voltage disconnect switch designed to prevent misoperation according to claim 1, characterized in that: The anti-misoperation verification mechanism (5) also includes an auxiliary positioning component (523) disposed on the base (1). The auxiliary positioning component (523) is provided with a wedge-shaped locking block (524); The sliding sleeve (601) is provided with a ramp surface (607) that cooperates with the wedge-shaped block (524). When the sliding sleeve (601) slides to the designated position, the ramp surface (607) engages with the wedge-shaped block (524).

9. A high-voltage disconnect switch designed to prevent misoperation according to claim 1, characterized in that: A positioning feedback mechanism (608) is provided between the sliding sleeve (601) and the input shaft (514). The positioning feedback mechanism (608) includes a ball (609) disposed in the sliding sleeve (601) and a compression spring (610) that provides a clamping force to the ball (609).

10. A high-voltage disconnect switch for preventing misoperation according to claim 1, characterized in that: The transmission crank arm (401) is also provided with an operating lever (403). The bottom of the operating lever (403) is provided with a limiting lever (404). The base (1) is provided with a limiting groove (101), and the limiting rod (404) is slidably disposed in the limiting groove (101).

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