Knife switch error prevention device, knife switch error prevention system and knife switch error prevention method

Abstract

The application is suitable for the field of electrical equipment, and discloses a knife switch anti-misoperation device, a knife switch anti-misoperation system and a knife switch anti-misoperation method. The knife switch anti-misoperation device comprises a knife switch, a knife switch detection assembly for detecting the position of the knife switch, a closing locking component, an opening locking component and a control assembly. The closing locking component and the opening locking component each comprise a key locking assembly and an authorized locking assembly. The key locking assembly is operated by a key to lock and unlock the knife switch. The authorized locking assembly is controlled by the control assembly to lock and unlock the key locking assembly, so as to limit the key locking assembly from locking and unlocking the knife switch. The knife switch anti-misoperation system comprises a server and the above knife switch anti-misoperation device. The knife switch anti-misoperation device, the knife switch anti-misoperation system and the knife switch anti-misoperation method provided by the application utilize the authorized locking assembly to limit the unlocking and locking of the key locking assembly, realize double anti-misoperation, eliminate the possibility of misoperation and ensure the safety of the equipment.

Description

Technical Field

[0001] The present invention belongs to the field of electrical equipment, and in particular relates to a knife switch error prevention device, a knife switch error prevention system and a knife switch error prevention method. Background Art

[0002] A knife switch is a common manual switch in the electrical field. Operating it requires the operator to manually close or open it. During manual operation, the operator is prone to negligence, resulting in misoperation of the switch, which can lead to safety accidents. To address this issue, some existing knife switch misoperation prevention devices include a status feedback module to inform the operator of the switch's status after operation. However, even with a knife switch misoperation prevention device equipped with a status feedback function, the switch can still be operated arbitrarily, leaving the possibility of misoperation and posing a safety hazard. Summary of the Invention

[0003] The present invention aims to solve at least one of the above-mentioned technical problems and provides a knife switch anti-error device, a knife switch anti-error system and a knife switch anti-error method, which use a closing locking component and an opening locking component to respectively lock and unlock knife switches in different positions, and use an authorized locking component to limit the unlocking and locking of the key locking component, thereby achieving double anti-error protection, eliminating the possibility of misoperation, and ensuring equipment safety.

[0004] The technical solution of the present invention is: a knife switch anti-error device, comprising:

[0005] Knife switch, which can be switched between closed position and open position;

[0006] A knife switch detection component, used for detecting the position of the knife switch;

[0007] A closing locking component, used for locking and unlocking the knife switch in the closing position;

[0008] An opening locking component, used for locking and unlocking the knife switch in the opening position;

[0009] A control component connected to the knife switch detection component and the closing and opening locking components;

[0010] Wherein, the closing locking component and the opening locking component both include a key locking assembly and an authorization locking assembly, the key locking assembly is operated by a key to lock and unlock the knife switch, and the authorization locking assembly locks and unlocks the key locking assembly under the control of the control assembly to restrict the key locking assembly from locking and unlocking the knife switch.

[0011] Optionally, the key locking assembly includes a pull rod and a pull rod lock, the pull rod can be moved closer to or farther away from the knife gate to lock or unlock the knife gate, and the pull rod lock locks or unlocks the pull rod under the drive of the key.

[0012] Optionally, the pull rod is provided with a limiting groove, and the pull rod lock comprises a lock twist driven by the key and a lock tongue extending into or out of the limiting groove under the action of the lock twist.

[0013] Optionally, two limiting grooves are provided at intervals, and the two limiting grooves respectively correspond to the positions of the pull rod approaching and away from the knife switch.

[0014] Optionally, the key locking assembly further comprises a pull rod detection assembly for detecting the position of the pull rod.

[0015] Optionally, the pull rod detection assembly includes a pull rod triggering member provided on the pull rod and a pull rod detection member triggered by the pull rod triggering member.

[0016] Optionally, two pull rod detection members are provided, and the two pull rod detection members correspond to the positions of the pull rod approaching and away from the knife switch respectively.

[0017] Optionally, the authorized locking assembly includes an electromagnetic drive member that locks or unlocks the pull rod lock under the control of the control assembly.

[0018] Optionally, the closing locking component and the opening locking component are accommodated in the same housing, and the housing is provided with two key holes corresponding to the closing locking component and the opening locking component respectively.

[0019] Optionally, the pull rod is slidably connected to the shell and passes through the shell, and both ends of the pull rod are provided with limiting portions for limiting the pull rod from being separated from the shell.

[0020] Optionally, the knife gate detection assembly includes a knife gate detection component and a knife gate trigger component connected to the knife gate, two knife gate detection components are provided and are respectively close to the closing position and the opening position, and two knife gate trigger components are relatively provided and are respectively used to trigger different knife gate detection components.

[0021] Optionally, the knife switch detection component is provided with a status prompt light and / or a speaker.

[0022] Optionally, the closing position and the opening position are located on opposite sides of the knife switch, and the closing locking component, the opening locking component and the control assembly are respectively located on the other two sides of the knife switch, and the closing locking component and the opening locking component are located on the same side.

[0023] The present invention also provides a knife switch error prevention system, comprising a server and the above-mentioned knife switch error prevention device, wherein the server is connected to the control component.

[0024] The present invention also provides a knife switch error prevention method, which uses the above knife switch error prevention system and includes the following steps:

[0025] The knife switch detection component detects that the knife switch is in the closing position or the opening position, and the pull rod of the closing locking component or the opening locking component approaches the knife switch and locks the knife switch, the pull rod lock locks the pull rod, and the authorization locking component of the closing locking component or the opening locking component locks the pull rod lock;

[0026] The server controls the authorization locking component of the closing locking component or the opening locking component through the control component to release the restriction of the pull rod lock, and the key drives the pull rod lock to unlock the pull rod, and the pull rod moves away and unlocks the knife switch;

[0027] The pull rod detection component of the closing lock component or the opening lock component detects the movement of the pull rod, and the pull rod lock relocks the pull rod, and the server controls the authorization locking component of the closing lock component or the opening lock component to relock the pull rod lock through the control component;

[0028] The knife switch is switched to the open position or the closed position, the knife switch detection component detects the knife switch switching position, the server controls the authorization locking component of the open locking component or the closed locking component through the control component to release the restriction on the pull rod lock, the key drives the pull rod lock to unlock the pull rod, and the pull rod approaches and locks the knife switch;

[0029] The pull rod detection component of the opening locking component or the closing locking component detects the movement of the pull rod, and the pull rod lock relocks the pull rod. The server controls the authorization locking component of the opening locking component or the closing locking component to relock the pull rod lock through the control component.

[0030] Optionally, the knife switch error prevention method further includes:

[0031] When the knife switch detection component detects that the position of the knife switch is inconsistent with the state of the pull rod at that position, the knife switch anti-error device and / or the server issues an alarm.

[0032] The present invention provides a knife switch anti-error device, a knife switch anti-error system and a knife switch anti-error method, which respectively lock or unlock the knife switch in the closed position and the open position through the closing locking component and the opening locking component. Specifically, the control component is used to control the authorization locking component to lock and unlock the key locking component. After the key locking component is unlocked, the knife switch is unlocked or the key locking component is driven to lock or unlock. Through the dual anti-error measures of the control component and the key, the possibility of operator misoperation is eliminated, the operation accuracy of the knife switch is guaranteed, and the safety of related equipment is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 This is a schematic diagram of the three-dimensional structure of a knife switch anti-error device provided by an embodiment of the present invention;

[0035] Figure 2 3D schematic diagram of a knife switch anti-error device (when the knife switch is in the closed position) provided by an embodiment of the present invention;

[0036] Figure 3 1 is a schematic diagram of the three-dimensional structure of a knife switch anti-error device (when the knife switch is in the open position) provided by an embodiment of the present invention;

[0037] Figure 4 This is a schematic diagram of the three-dimensional structure of a knife switch anti-error device (when the knife switch detection component and the pull rod are in inconsistent states) provided by an embodiment of the present invention;

[0038] Figure 5 It is a three-dimensional structural schematic diagram of a closing locking component and an opening locking assembly of a knife switch anti-error device provided by an embodiment of the present invention.

[0039] In the picture:

[0040] 10. Knife switch; 20. Closing lock component; 201. Pull rod; 202. Limiting part; 203. Limiting slot; 204. Pull rod lock; 2041. Lock tongue; 2042. Lock twist; 205. Authorization locking component; 206. Positioning slot; 207. Pull rod detection component; 21. Opening lock component; 22. Housing; 221. Keyhole; 222. Wireless code chip; 30. Knife switch detection component; 301. Status indicator light; 31. Knife switch trigger; 40. Control component; 50. Wiring. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0042] It should be noted that the terms "setting" and "connecting" should be understood in a broad sense. For example, it can be directly setting or connecting, or it can be indirectly setting or connecting through a central component or a central structure.

[0043] In addition, if there are terms such as "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating orientation or positional relationships in the embodiments of the present invention, they are based on the orientation or positional relationships shown in the drawings or the conventional placement state or usage state, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure, feature, device or element referred to must have a specific orientation or positional relationship, nor must it be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0044] The various specific technical features and embodiments described in the specific implementation methods can be combined in any suitable manner unless there is any contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments / implementations. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features / embodiments / implementations in the present invention will not be described separately.

[0045] Please refer to Figure 1 The embodiment of the present invention provides a knife switch anti-error device, comprising a knife switch 10, a knife switch detection component, a closing lock component 20, an opening lock component 21 and a control component 40. The control component 40 is connected to the knife switch detection component, the closing lock component 20 and the opening lock component 21. The knife switch 10 can be switched between a closing position and an opening position. The knife switch detection component can detect the position of the knife switch 10 when the knife switch 10 switches positions. Please refer to Figure 2 The closing locking component 20 can lock the knife switch 10 in the closing position or release the locking state of the knife switch 10 when the knife switch 10 is switched to the closing position, so as to limit the switching operation of the knife switch 10. Accordingly, please refer to Figure 3 , the opening locking component 21 can lock the knife switch 10 in the opening position or release the locking state of the knife switch 10 when the knife switch 10 is switched to the opening position, so as to limit the switching action of the knife switch 10. For details, please refer to Figure 5The closing locking component 20 and the opening locking component 21 both include a key locking assembly and an authorization locking assembly 205. The key locking assembly can lock and unlock the knife switch 10 after being unlocked with a key or driven by a key, and the authorization locking assembly 205 can lock and unlock the key locking assembly under the control of the control component 40 to limit the operation of the key locking assembly, thereby realizing the operation process of the control component 40-authorization locking assembly 205-key locking assembly-knife switch 10. In a specific application, in the initial state (taking the knife switch 10 in the closed position as an example), the key locking component of the closing locking component 20 is in the state of locking the knife switch 10, and the authorization locking component 205 is in the state of locking the key locking component. When the operator operates the knife switch 10, he first applies for operation permission. After authorization, the knife switch detection component detects that the knife switch 10 is in the closed position, and the control component 40 controls the authorization locking component 205 of the closing locking component 20 to release the locking state of the key locking component. Then the operator uses the key to operate the key locking component (or the key directly drives the key locking component to unlock the knife switch 10), and then unlocks the knife switch 10. At this time, the knife switch 10 can be switched to the open position; after the knife switch detection component detects that the knife switch 10 is switched to the open position, the control component 40 can control the authorization locking component 205 of the open locking component 21 to release the restriction on the key locking component, and the operator can use the key to operate the key unlocking component of the open locking component 21, thereby locking the knife switch 10 and completing the switching operation of the knife switch 10. In this way, during the process of the operator switching the knife switch 10, all specific operations are restricted by the authorization locking component 205. Even if the operator holds the key, he cannot directly switch the knife switch 10, which can effectively regulate the operator's operation, avoid the occurrence of misoperation, and ensure the safety of the equipment. If the operator makes an erroneous operation during the operation, for example, when switching the knife switch 10 to the open position, the knife switch 10 is not completely switched to the open position (that is, the knife switch detection component does not detect the knife switch 10), the control component 40 will not control the authorization locking component 205 to release the restriction on the key locking component, so that the operator cannot perform the next operation, thereby regulating the operator's operation, and the control component 40 can also synchronize the information to the background in real time to achieve remote real-time monitoring.

[0046] Please continue to refer to Figure 5As one of the optional implementations of this embodiment, the key locking assembly includes a pull rod 201 and a pull rod lock 204. The pull rod 201 can move closer to and farther away from the knife gate 10. When the pull rod 201 moves closer to the knife gate 10, it can lock the knife gate 10. When the pull rod 201 moves away from the knife gate 10, it can unlock the knife gate 10. The pull rod lock 204 can lock or unlock the pull rod 201 under the drive of a key. In this embodiment, the pull rod 201 can be manually operated. Specifically, after using the key to release the restriction of the pull rod lock 204 on the pull rod 201, the operator can manually pull the pull rod 201 to the corresponding position and then lock the pull rod 201. Of course, in other embodiments, other methods can also be used. For example, the pull rod 201 is directly driven by the pull rod lock 204, that is, the key is used to drive the pull rod lock 204 to directly drive the pull rod 201 closer to and farther away from the knife gate 10.

[0047] In a specific application, the key locking assembly can be set on one side of the knife gate 10, and the pull rod 201 faces the knife gate 10. Please refer to Figure 2 and Figure 3 When the knife switch 10 is switched to the closed position or the open position, the pull rod 201 is pulled close to the knife switch 10 so that the pull rod 201 is on the switching travel trajectory of the knife switch 10, thereby blocking the knife switch 10 and achieving locking and unlocking of the knife switch 10. This design has low precision requirements for the pull rod 201, is convenient for operators to operate, and has good reliability.

[0048] Please refer again Figure 5 Furthermore, as one of the optional implementations of this embodiment, the pull rod 201 is provided with a limiting groove 203, and the pull rod lock 204 includes a lock twist 2042 and a lock tongue 2041. The lock twist 2042 can be rotated under the drive of the key. When the lock twist 2042 rotates, it can act on the lock tongue 2041, so that the lock tongue 2041 extends into or exits the limiting groove 203, thereby realizing the restriction of the pull rod 201.

[0049] Preferably, two limiting grooves 203 can be provided at intervals, with the two limiting grooves 203 corresponding to the position where the pull rod 201 is close to the knife gate 10 and the position where the pull rod 201 is away from the knife gate 10, respectively. Specifically, the limiting groove 203 can be an annular groove, and the locking tongue 2041 can be arranged perpendicular to the pull rod 201. When the pull rod 201 is away from the knife gate 10, the locking tongue 2041 can align with one of the limiting grooves 203, and when the pull rod 201 is close to the knife gate 10, the locking tongue 2041 can align with the other limiting groove 203. In this way, through the locking tongue 2041 and the two limiting grooves 203 in different positions, the pull rod 201 can be locked and unlocked in different states, ensuring the reliability of the knife gate anti-error device.

[0050] Please continue to refer to Figure 5As one of the optional implementations of this embodiment, the key locking assembly also includes a pull rod detection assembly. The pull rod detection assembly can detect the position of the pull rod 201 in real time, that is, detect whether the pull rod 201 is close to the knife gate 10 or far away from the knife gate 10. The pull rod detection assembly can send the position information of the pull rod 201 to the control assembly 40, thereby further standardizing the operator's operation.

[0051] Specifically, as one of the optional implementations of this embodiment, the pull rod detection assembly includes a pull rod trigger (not shown in the figure) and a pull rod detection component 207. The pull rod trigger is arranged on the pull rod 201, and the pull rod trigger can move with the pull rod 201. When the pull rod 201 switches position, the pull rod trigger can trigger the pull rod detection component 207 to realize real-time detection of the position of the pull rod 201.

[0052] Preferably, two pull rod detection members 207 can be provided, and the two pull rod detection members 207 correspond to the position of the pull rod 201 close to the knife switch 10 and the position away from the knife switch 10, respectively. In this embodiment, the pull rod trigger member can be a magnet, and the pull rod detection member 207 can be a Hall element. When the pull rod 201 moves to a position close to the knife switch 10, the magnet can trigger one of the Hall elements, and when the pull rod 201 moves to a position away from the knife switch 10, the magnet can trigger another Hall element, thereby realizing real-time detection of the position of the pull rod 201. In addition, with such a design, the pull rod detection member 207 can also detect whether the pull rod 201 has moved into place, that is, when both pull rod detection members 207 do not detect the pull rod trigger member, it can be determined that the pull rod 201 has not moved into place, and a corresponding prompt can be issued to remind the operator. At the same time, the control component 40 can also prohibit the operator from performing the next operation until the operator corrects the error. Of course, in other embodiments, the pull rod detection member 207 and the pull rod trigger member can also be other suitable detection components, such as infrared detection tubes, or magnets and reed switches. The number of pull rod detection members 207 can be set according to actual needs, and one or two can be provided.

[0053] Please continue to refer to Figure 5As one of the optional implementations of this embodiment, the authorization locking component 205 includes an electromagnetic drive component, which can lock or unlock the pull rod lock 204 under the control of the control component 40. Specifically, in this embodiment, the electromagnetic drive member is directed toward the lock tongue 2041. The electromagnetic drive member can be perpendicular to the lock tongue 2041 and parallel to the pull rod 201 (the direction of extension and retraction of the electromagnetic drive member is perpendicular to the movement direction of the lock tongue 2041 and parallel to the movement direction of the pull rod 201). A positioning groove 206 is provided at the position of the lock tongue 2041 corresponding to the electromagnetic drive member. Before the operator obtains authorization, the end of the electromagnetic drive member extends into the positioning groove 206 to limit the movement of the lock tongue 2041. At this time, even if the operator holds the key, he cannot rotate the lock knob 2042 and the lock tongue 2041. After authorization, the end of the electromagnetic drive member retracts and exits the positioning groove 206. At this time, the operator can use the key to unlock the door. After the pull rod 201 moves, the pull rod detection component detects the change in the position of the pull rod 201, and the pull rod lock 204 can re-lock the pull rod 201. At the same time, the end of the electromagnetic drive member re-extends into the positioning groove 206. At this time, the pull rod 201 can no longer be operated at will.

[0054] In specific applications, other methods can also be used to limit the pull rod lock 204, such as using a motor and a limiter connected to the motor, the motor drives the limiter to extend into or out of the positioning groove 206, or the positioning groove 206 can be set on the lock twist 2042, and an electromagnetic drive component or a motor and a limiter are used to limit the rotation of the lock twist 2042, which can also achieve the same technical effect as the present embodiment.

[0055] Please refer again Figure 1 As an optional implementation of this embodiment, the closing lock component 20 and the opening lock component 21 can be housed in the same housing 22. The housing 22 is provided with two keyholes 221, one corresponding to the closing lock component 20 and the other to the opening lock component 21. In this embodiment, a wireless chip 222 can be provided on one side of the keyhole 221. After a key is inserted into the keyhole 221, the wireless chip 222 can be identified to verify the identity of the current knife switch 10, thereby preventing incorrect operation of the knife switch 10. Of course, the closing lock component 20 and the opening lock component 21 can also be provided in two separate housings.

[0056] In specific applications, the knife switch anti-error device in this embodiment can be used for the modification of the existing knife switch 10. Specifically, the closing locking component 20, the opening locking component 21 and the knife switch detection assembly and other components in this embodiment can be added to the existing knife switch 10 to realize the modification and upgrade of the existing knife switch 10. In addition, this embodiment integrates the closing locking component 20 and the opening locking component 21 into the same housing 22, with a high degree of integration and convenient installation.

[0057] Please continue to refer to Figure 1 Furthermore, as one of the optional implementations of this embodiment, the pull rod 201 is slidably connected to the shell 22 and passes through the shell 22. The two ends of the pull rod 201 are provided with limiting portions 202 for limiting the pull rod 201 from detaching from the shell 22, and the limiting portions 202 extend from both sides of the shell 22. In a specific application, when the operator pulls the pull rod 201 toward the knife gate 10, the limiting portion 202 on the side of the pull rod 201 away from the knife gate 10 is pressed against the shell 22. At this time, one of the limiting grooves 203 of the pull rod 201 can be exactly aligned with the lock tongue 2041. Correspondingly, when the operator pulls the pull rod 201 toward the direction away from the knife gate 10, the limiting portion 202 on the side of the pull rod 201 close to the knife gate 10 is pressed against the shell 22. At this time, the other limiting groove 203 of the pull rod 201 can be exactly aligned with the lock tongue 2041. In this way, through the cooperation between the limiting portion 202 and the shell 22, on the one hand, the pull rod 201 can be prevented from separating from the shell 22. On the other hand, the positioning of the limiting groove 203 can be intuitively realized through the limiting portion 202, which is convenient for the operator's operation.

[0058] Please continue to refer to Figure 1 As one of the optional implementations of this embodiment, the knife gate detection assembly includes a knife gate detection component 30 and a knife gate trigger component 31. Two knife gate detection components 30 can be provided, and the two knife gate detection components 30 can be close to the closing position and the opening position respectively. Two knife gate trigger components 31 can be relatively provided, and the two knife gate trigger components 31 can be connected to different sides of the knife gate 10, and the two knife gate trigger components 31 are used to trigger different knife gate detection components 30 respectively.

[0059] Specifically, the knife gate trigger 31 may include a coil and a code chip, and the two knife gate triggers 31 have different coils and code values, corresponding to the two knife gate detection components 30, respectively, to avoid false detection and improve detection accuracy. In specific applications, the knife gate detection component can also be other detection structures, such as using an infrared tube or a magnet in combination with a Hall element, which can also achieve the same technical effects as this embodiment.

[0060] In specific applications, the knife switch detection component can cooperate with the closing locking component 20 and the opening locking component 21. For details, please refer to Figure 4 When the knife switch 10 has not been completely switched to the open position, the pull rod 201 of the open locking component 21 is in a locked state, which makes the operator unable to continue to switch the position of the knife switch 10. At this time, the control component 40 determines that the status of the knife switch component and the open locking component 21 do not match, and can trigger a corresponding prompt, and synchronously upload the information to the background to prompt the staff to make corrections in time.

[0061] Please refer to Figure 1Furthermore, as one of the optional implementations of this embodiment, the knife gate detection member 30 can be provided with a status prompt light 301 and / or a loudspeaker (not shown in the figure). The status prompt light 301 can be provided on the front of the knife gate detection member 30. When the knife gate detection member 30 is triggered (i.e., the knife gate 10 is close to the knife gate detection member 30), the status prompt light 301 can emit a corresponding light to prompt the operator that the knife gate 10 has been switched into place. The loudspeaker can also emit a buzzer sound when the operator makes an erroneous operation. For example, when switching the position of the knife gate 10, if the knife gate 10 is not switched into place (i.e., the knife gate detection member 30 is not triggered), and the set time is exceeded, the loudspeaker can emit a buzzer sound. Of course, the status prompt light 301 and / or the loudspeaker also issue corresponding prompts when the closing locking component 20 and the opening locking component 21 are erroneously operated.

[0062] Please continue to refer to Figure 1 As one of the optional implementations of this embodiment, the closing position and the opening position are located on opposite sides of the knife switch 10, and the locking components (including the closing locking component 20 and the opening locking component 21) and the control assembly 40 are respectively located on the other two sides of the knife switch 10. The closing locking component 20 and the opening locking component 21 are housed in the same housing 22 and are located on the same side. Specifically, the two knife switch detection components 30 are located on both sides of the closing position and the opening position. The knife switch detection components 30, the closing locking component 20, the opening locking component 21, and the control assembly 40 are connected by a cable 50, and the cable 50 can be connected to each component through a connector, which facilitates the installation, disassembly and maintenance of each component and is also conducive to the modification of the existing knife switch 10.

[0063] An embodiment of the present invention also provides a knife switch 10 anti-error system, including a server and the above-mentioned knife switch anti-error device. The server is connected to the control component 40. The control component 40 can synchronously upload the real-time status of each component to the server to facilitate monitoring by backstage staff, and the backstage staff can also issue corresponding control instructions to the control component 40 through the server to achieve remote control.

[0064] The embodiment of the present invention further provides a method for preventing a knife switch 10 from being misoperated, which uses the above-mentioned knife switch 10 misoperation prevention system, including the following steps (for ease of description, this embodiment takes the knife switch 10 switching from the closed position to the open position as an example, but this is not a limitation of the present invention):

[0065] The knife switch detection component detects that the knife switch 10 is in the closed position, the pull rod 201 of the closing locking component 20 approaches the knife switch 10 and locks the knife switch 10, the pull rod lock 204 locks the pull rod 201, and the authorization locking component 205 of the closing locking component 20 locks the pull rod lock 204.

[0066] The server controls the authorization locking component 205 of the closing locking component 20 through the control component 40 to release the restriction on the pull rod lock 204 , and the key drives the pull rod lock 204 to unlock the pull rod 201 , and the pull rod 201 moves away and unlocks the knife switch 10 .

[0067] The rod detection component of the closing locking component 20 detects the movement of the rod 201, and the rod lock 204 relocks the rod 201. The server controls the authorization locking component 205 of the closing locking component 20 to relock the rod lock 204 through the control component 40.

[0068] The knife switch 10 is switched to the open position. The knife switch detection component detects the switch position. The server controls the authorization locking component 205 of the open lock component 21 through the control component 40 to release the restriction on the pull rod lock 204. The key drives the pull rod lock 204 to unlock the pull rod 201. The pull rod 201 approaches and locks the knife switch 10.

[0069] The rod detection component of the opening locking component 21 detects that the rod 201 has moved, and the server controls the authorization locking component 205 of the opening locking component 21 through the control component 40 to relock the rod lock 204 .

[0070] Specifically, in the initial state (see Figure 2 ), the knife switch 10 is in the closed position, the knife switch 10 triggers the detection triggering the knife switch detection part 30 located at the closed position, the pull rod 201 of the closing locking component 20 is in the locked knife switch 10 state, and the pull rod lock 204 is in the locked pull rod 201 state, and the electromagnetic drive component is in the locked pull rod lock 204 state. After the operator obtains authorization, the control component 40 will control the electromagnetic drive component to exit the positioning slot 206 to release the restriction on the lock tongue 2041. At this time, the operator uses the key to insert into the key hole 221 and twist the lock knob 2042. The lock knob 2042 drives the lock tongue 2041 to exit the limiting slot 203 of the pull rod 201. The operator then pulls the pull rod 201 outward and unlocks the knife switch 10. The lock tongue 2041 extends into the limiting slot 203 to lock the pull rod 201. At this time, the pull rod detection component 207 detects the change in the position of the pull rod 201. The control component 40 controls the electromagnetic drive component to extend into the positioning slot 206 and locks the pull rod 201 of the closing locking component 20 again.

[0071] Then switch the knife switch 10 to the open position. At this time, the knife switch detection component 30 at the open position is triggered, and the control component 40 controls the electromagnetic drive component of the open locking component 21 to exit the positioning slot 206 to release the restriction on the lock tongue 2041. The operator can use the key to insert the key hole 221 of the corresponding open locking component 21 and twist the lock knob 2042. The lock knob 2042 drives the lock tongue 2041 to exit the limiting slot 203 of the pull rod 201. The operator then pushes the pull rod 201 inward and locks the pull rod 201. The lock tongue 2041 re-extends into the limiting slot 203 and locks the pull rod 201. At this time, the pull rod detection component 207 detects the change in the position of the pull rod 201. The control component 40 controls the electromagnetic drive component to extend into the positioning slot 206 and locks the pull rod 201 of the open locking component 21 again to complete the switching operation of the knife switch 10.

[0072] As one of the optional implementations of this embodiment, the method for preventing the knife switch 10 from misoperation further includes:

[0073] When the knife switch detection component detects that the position of the knife switch 10 is inconsistent with the state of the pull rod 201 at that position, the knife switch anti-error device or / and the server will issue an alarm. Figure 4 When the knife switch detection component does not detect the knife switch 10, and the pull rod detection component of the closing locking component 20 or the opening locking component 21 detects that the pull rod 201 is close to the knife switch 10, it indicates that there is an error in the locking of the knife switch 10. At this time, the knife switch anti-error device and / or the server will issue a corresponding prompt.

[0074] The embodiments of the present invention provide a knife switch anti-error device, a knife switch 10 anti-error system and a knife switch 10 anti-error method, which respectively lock or unlock the knife switch 10 in the closed position and the open position through the closing locking component 20 and the opening locking component 21. Specifically, the control component 40 is used to control the authorization locking component 205 to lock and unlock the key locking component. After the key locking component is unlocked, the knife switch 10 is unlocked or driven by the key to lock or unlock the knife switch 10. The dual anti-error measures of the control component 40 and the key eliminate the possibility of operator's misoperation, ensure the accuracy of the operation of the knife switch 10, and ensure the safety of related equipment.

[0075] 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 or improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A knife switch anti-error device, characterized in that: include: Knife switch, which can be switched between closed position and open position; A knife switch detection component, used for detecting the position of the knife switch; A closing locking component, used for locking and unlocking the knife switch in the closing position; An opening locking component, used for locking and unlocking the knife switch in the opening position; A control component connected to the knife switch detection component and the closing and opening locking components; Wherein, the closing locking component and the opening locking component both include a key locking assembly and an authorization locking assembly, the key locking assembly and the authorization locking assembly are coupled, the key locking assembly is operated by a key to lock and unlock the knife gate, the authorization locking assembly locks and unlocks the key locking assembly under the control of the control assembly to restrict the key locking assembly from locking and unlocking the knife gate, the key locking assembly includes a pull rod and a pull rod lock, the pull rod can move closer to or farther away from the knife gate to lock or unlock the knife gate, the pull rod lock locks or unlocks the pull rod under the drive of the key, the pull rod is provided with a limiting groove, the pull rod lock includes a lock twist driven by the key and a lock tongue that extends into or out of the limiting groove under the action of the lock twist, the key locking assembly also includes a pull rod detection assembly for detecting the position of the pull rod, and the authorization locking assembly includes an electromagnetic drive component that locks or unlocks the pull rod lock under the control of the control assembly; The electromagnetic drive component is directed toward the lock tongue, and is perpendicular to the lock tongue and parallel to the pull rod. A positioning groove is provided at the position of the lock tongue corresponding to the electromagnetic drive component. Before the operator obtains authorization, the end of the electromagnetic drive component extends into the positioning groove to limit the movement of the lock tongue. After authorization, the end of the electromagnetic drive component retracts and exits the positioning groove. At this time, the operator can use the key to unlock the door, and after the pull rod moves to a certain position, the pull rod detection component detects the position change of the pull rod, and the pull rod lock can re-lock the pull rod. At the same time, the pull rod is automatically locked when the end of the electromagnetic drive component re-extends into the positioning groove. At this time, the pull rod can no longer be operated at will.

2. A knife switch anti-error device according to claim 1, characterized in that: There are two limit grooves spaced apart, and the two limit grooves correspond to the positions of the pull rod approaching and away from the knife switch respectively.

3. A knife switch anti-error device according to claim 1, characterized in that: The pull rod detection assembly includes a pull rod triggering member provided on the pull rod and a pull rod detection member triggered by the pull rod triggering member.

4. A knife switch anti-error device according to claim 3, characterized in that: There are two pull rod detection members, and the two pull rod detection members correspond to the position where the pull rod is close to and away from the knife switch respectively.

5. The knife switch anti-error device according to claim 1, characterized in that: The closing locking component and the opening locking component are accommodated in the same housing, and the housing is provided with two key insertion holes corresponding to the closing locking component and the opening locking component respectively.

6. A knife switch anti-error device according to claim 5, characterized in that: The pull rod is slidably connected to the housing and passes through the housing. Both ends of the pull rod are provided with limiting portions for limiting the pull rod from being separated from the housing.

7. A knife switch anti-error device according to any one of claims 1 to 6, characterized in that: The knife gate detection assembly includes a knife gate detection part and a knife gate trigger part connected to the knife gate. Two knife gate detection parts are provided and are respectively close to the closing position and the opening position. Two knife gate trigger parts are relatively provided and are respectively used to trigger different knife gate detection parts.

8. A knife switch anti-error device as claimed in claim 7, characterized in that: The knife switch detection component is provided with a status prompt light and / or a loudspeaker.

9. A knife switch anti-error device according to any one of claims 1 to 6, characterized in that: The closing position and the opening position are located on opposite sides of the knife switch, and the closing locking component, the opening locking component and the control assembly are respectively located on the other two sides of the knife switch, and the closing locking component and the opening locking component are located on the same side.

10. A knife switch anti-error system, characterized in that: The invention comprises a server and a knife switch anti-error device according to any one of claims 1 to 9, wherein the server is connected to the control component.

11. A method for preventing knife switch from misoperation, characterized in that: The knife switch anti-error system according to claim 10 comprises the following steps: The knife switch detection component detects that the knife switch is in the closing position or the opening position, and the pull rod of the closing locking component or the opening locking component approaches the knife switch and locks the knife switch, the pull rod lock locks the pull rod, and the authorization locking component of the closing locking component or the opening locking component locks the pull rod lock; The server controls the authorization locking component of the closing locking component or the opening locking component through the control component to release the restriction of the pull rod lock, and the key drives the pull rod lock to unlock the pull rod, and the pull rod moves away and unlocks the knife switch; The pull rod detection component of the closing lock component or the opening lock component detects the movement of the pull rod, and the pull rod lock relocks the pull rod, and the server controls the authorization locking component of the closing lock component or the opening lock component to relock the pull rod lock through the control component; The knife switch is switched to the open position or the closed position, the knife switch detection component detects the knife switch switching position, the server controls the authorization locking component of the open locking component or the closed locking component through the control component to release the restriction on the pull rod lock, the key drives the pull rod lock to unlock the pull rod, and the pull rod approaches and locks the knife switch; The pull rod detection component of the opening locking component or the closing locking component detects the movement of the pull rod, and the pull rod lock relocks the pull rod. The server controls the authorization locking component of the opening locking component or the closing locking component to relock the pull rod lock through the control component.

12. A knife switch error prevention method according to claim 11, characterized in that: The knife switch error prevention method also includes: When the knife switch detection component detects that the position of the knife switch is inconsistent with the state of the pull rod at that position, the knife switch anti-error device and / or the server issues an alarm.

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