CN214253309U - Intelligent automatic locking and listing device and system - Google Patents
Intelligent automatic locking and listing device and system Download PDFInfo
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- CN214253309U CN214253309U CN202120414160.6U CN202120414160U CN214253309U CN 214253309 U CN214253309 U CN 214253309U CN 202120414160 U CN202120414160 U CN 202120414160U CN 214253309 U CN214253309 U CN 214253309U
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Abstract
The utility model discloses an intelligence is automatic to be locked and is listed device and system, include: the system comprises a control circuit, an energy switch, an identity recognition module, an automatic locking module and an alarm module; the control circuit is used for controlling the alarm module to send out locking reminding in response to the closing signal of the energy switch; the control circuit is used for uploading the identity information to an external platform for verification or carrying out local verification on the identity information in response to the identity information acquired by the identity recognition module; and the control circuit is used for controlling the automatic locking module to lock the energy switch and controlling the alarm module to prompt the locking and listing state in response to the locking and listing instruction obtained by the identity information verification. The utility model discloses a do not have real lock design, use convenient high-efficient, the identity information of a plurality of devices can be verified by same external platform simultaneously, and device overall structure simplifies, the operation is more high-efficient, in addition, can arbitrary network deployment carry out the linked type and lock the listing between the device, can satisfy various demands and improve the security greatly.
Description
Technical Field
The utility model belongs to the technical field of equipment safety, especially, relate to an automatic mahjong tile hanging device and system of locking of intelligence.
Background
The locking and listing LOTO (Lock Out Tag Out) is always an important safety standard in the safety use of equipment, most production enterprises in the world can require maintenance personnel to abide by the locking and listing operation, safety accidents caused by the accidental opening of the equipment in the maintenance process are avoided, and the safety of the personnel in the equipment maintenance process is ensured.
The existing execution method of locking and listing, generally adopt simple mechanical lock and sign cooperation, the energy switch to equipment is locked and is listed the relevant operation, wherein, the locking and listing mode operation of real lock is very inconvenient, the lock also very easily loses or forgets with the key, lead to the relaxation of personnel's consciousness, can often appear forgetting to lock and list, the listing of locking on purpose, the random violation operation behaviors such as locking and listing, these are one of the reasons that cause enterprise's equipment to use the incident emergence, general enterprise all has the supervision difficulty to this, the poor phenomenon of supervision effect, in addition, the energy switch of every equipment is locked and is listed separately independently, can't realize locking and listing to the energy switch linkage of a plurality of equipment, this has also caused the inconvenience of personnel's operation, can't effectively guarantee operating personnel's security.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the technical problem who locks and hang tablet existence, provide an intelligence automatic locking and hang tablet device and system.
The technical scheme of the utility model is that:
an intelligent automatic locking and listing device, comprising:
the control circuit is respectively in signal connection with the energy switch, the identity recognition module, the automatic locking module and the alarm module;
the control circuit is used for controlling the alarm module to send out locking reminding in response to the closing signal of the energy switch; the control circuit is used for uploading the identity information to an external platform for verification or carrying out local verification on the identity information in response to the identity information acquired by the identity recognition module; and the control circuit is used for controlling the automatic locking module to lock the energy switch and controlling the alarm module to prompt the locking and listing state in response to the locking and listing instruction obtained by the identity information verification.
According to an embodiment of the present invention, the automatic locking module includes a servo motor and a locking link;
the energy switch is provided with a hole groove, and the servo motor is used for driving and controlling the locking connecting rod to be inserted into or withdrawn from the hole groove so as to realize locking and unlocking of the energy switch.
According to the utility model discloses an embodiment, the connecting rod of locking includes push rod, transfer line, bolt, and the one end and the servo motor of push rod are connected, and the other end of push rod is through transfer line and bolt connection.
According to the utility model discloses an embodiment, the automatic module of locking still is equipped with position sensor for the locking state and the unblock state and to servo motor, the spacing protection of the connecting rod of locking of the connecting rod of detecting to lock.
According to the utility model relates to an embodiment, identification module includes fingerprint identification module and finger inductor, and finger inductor is used for responding to the finger input and awakens up fingerprint identification module work, and fingerprint identification module is used for gathering the fingerprint information of locking string tablet operating personnel, and control circuit is used for conveying to outside platform verification on fingerprint information.
According to the utility model discloses an embodiment, control circuit is equipped with NB-IOT communication module or 5G communication module for with outside platform communication and with other automatic mahjong tiles locking device network deployment of intelligence.
An intelligent automatic locking and listing system is characterized by comprising a cloud platform and the intelligent automatic locking and listing device in any one embodiment;
the cloud platform is communicated with the intelligent automatic locking and listing device and is used for verifying the identity information uploaded by the intelligent automatic locking and listing device and monitoring the locking and listing process.
According to the utility model relates to an embodiment, high in the clouds platform and the automatic string of tablet device communication of locking of a plurality of intelligence for the automatic network deployment between the string of tablet device of locking of a plurality of intelligence to realize that the linked type between the string of tablet device of locking of a plurality of intelligence is locked.
According to the utility model relates to an embodiment, high in the clouds platform still is used for the personnel of locking the listing to authorize the management and the work order of locking the listing operation is established and is managed.
According to the utility model discloses an embodiment, still include equipment terminal for visit high in the clouds platform is to locking the real time monitoring of listing process information.
Compared with the prior art, the utility model have following advantage and positive effect:
1) the utility model collects the identity information of the upper locking tag through the identity recognition module, the identity information is sent to the external platform for verification or the identity information is locally verified through the control circuit, the automatic upper locking module is controlled to lock the energy switch after the verification is passed, so as to complete the operation of the upper locking tag, wherein, an operator does not need to carry a real lock or a sign, the identity information is collected by the identity recognition module, and also does not need to carry any object, such as fingerprints, human faces and other characteristics, thereby leading the use of the upper locking tag to be convenient and efficient, more humanization and intellectualization, solving the problems of inertia and difficult supervision on the upper locking tag, simultaneously, under the condition that the identity information uploaded by a plurality of devices is verified by the same external platform, the whole structure of each device is simple, the operation is efficient, the cost and the energy consumption are reduced, the use time length is prolonged, the information verification is safer, the possibility of device downtime is also reduced;
2) the utility model can not only carry out state monitoring feedback, but also carry out limit protection on the automatic locking module by arranging the position sensor in the automatic locking module, thereby reducing mechanical damage and prolonging the service life;
3) the utility model combines the intelligent automatic locking and card hanging device with the cloud platform, the cloud platform can not only uniformly verify identity information of a plurality of devices and monitor the locking and card hanging process, realize the individual locking and card hanging of each device, but also realize the arbitrary network connection among the devices through the same external platform, thereby realizing the linkage locking and card hanging of a plurality of locking and card hanging devices, namely linkage locking and unlocking, meeting the locking and card hanging requirements of arbitrary equipment groups, greatly improving the application range of the device, leading the safety of the linkage locking and card hanging to be more firm, avoiding the danger caused by the individual unlocking of a certain device, greatly improving the safety of operators, leading the cloud platform to carry out the personnel authorization management and the work order establishment and management of the locking and card hanging, being more convenient for enterprise supervision and operators, the dangerous behavior that the hanging plate is not locked due to the inertia of operators is avoided, and the use is more convenient, more efficient and safer.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
FIG. 1 is an overall structure diagram of the intelligent automatic locking and listing device of the present invention;
FIG. 2 is an internal structure view of the intelligent automatic locking card hanging device of the present invention;
FIG. 3 is an exploded view of the intelligent automatic locking tag hanging device of the present invention;
FIG. 4 is a flow chart of the single-machine locking and listing process of the intelligent automatic locking and listing device of the present invention;
fig. 5 is a flow chart of the linked locking and listing process of the intelligent automatic locking and listing device of the present invention;
fig. 6 is a flow chart of the linkage unlocking process of the intelligent automatic locking and listing device of the utility model.
Description of reference numerals:
1-a control circuit; 2-energy switch; 3-an identity recognition module; 41-a servo motor; 421-a push rod; 422-a transmission rod; 423-plug pin; 43-position sensor; 5-an alarm module.
Detailed Description
In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.
For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
Referring to fig. 1 to 3, the present application provides an intelligent automatic locking and listing device, including:
the control circuit 1 is respectively in signal connection with the energy switch 2, the identity recognition module 3, the automatic locking module and the alarm module 5;
in response to the closing signal of the energy switch 2, the control circuit 1 is used for controlling the alarm module 5 to send out locking reminding; in response to the identity information collected by the identity recognition module 3, the control circuit 1 is used for uploading the identity information to an external platform for verification or locally verifying the identity information; in response to the locking and listing instruction obtained by the identity information verification, the control circuit 1 is used for controlling the automatic locking module to lock the energy switch 2 and controlling the alarm module 5 to prompt the locking and listing state.
The present embodiment will now be described in further detail, but is not limited thereto.
The intelligent automatic locking and listing device of the embodiment is suitable for locking and listing of various electrical equipment, can be used for transforming the electrical switch of the original equipment very conveniently, and can be fixed on the switch of the original shell of the equipment only by fixedly installing the whole device in reference to fig. 2, so that the intelligent locking and listing device can have the intelligent locking and listing function of the embodiment. Further, this embodiment is applicable to the electrical equipment group of listing on needs linkage more, and each equipment correlation in the electrical equipment group promptly needs to operate many equipment wherein simultaneously when listing on needs, easily realizes the correlation of listing on many equipment through this embodiment, uses convenient high-efficient, and the security is better.
Specifically, the energy switch of the application can generate a closing signal in a closing process in an electromagnetic induction mode, and can also generate a closing signal in an electric contact mode in a closing process, so that the purpose of detecting the switch state in the locking and hanging process is achieved.
Referring to fig. 2 and 3, the automatic locking module of the present embodiment employs a servo motor 41 and a locking link, wherein the energy switch 2 of the present embodiment is provided with a hole slot, the servo motor 41 drives and controls the locking link to be inserted into or withdrawn from the hole slot to lock and unlock the energy switch 2, the locking link includes a push rod 421, a transmission rod 422, and a latch 423, one end of the push rod 421 is connected to the servo motor 41, the other end of the push rod 421 is connected to the latch 423 through the transmission rod 422, and the transmission rod 422 can be driven by pushing, rotating, or lever, so as to move the latch 423 along the hole slot direction. Except for the locking mode of inserting the 423 holes of the bolt, the automatic locking module can also design the connection relation between the energy switch 2 and the equipment lock cylinder into a movable variable mode, when the lock is needed, the automatic locking module separates the lock cylinder from the energy switch 2, namely, the energy switch 2 is disconnected from the lock cylinder, so that the energy switch 2 cannot change the state of the lock cylinder, when the lock is needed, the automatic locking module is meshed with the lock cylinder and the energy switch 2, namely, the energy switch 2 and the lock cylinder synchronously rotate, and therefore the energy switch 2 can change the state of the lock cylinder. Similarly, the automatic locking module may also adopt other structures, such as a locking type, and lock along with the rotation of the automatic mechanism during locking, and unlock electrically controlled during unlocking, which is not described herein again.
Preferably, referring to fig. 2 and 3, the automatic locking module of the present embodiment further includes a position sensor 43 disposed below the locking link, for detecting a locked state and an unlocked state of the locking link, and for protecting the servo motor 41 and the locking link from being damaged by overrun, so as to prevent the servo motor 41 and the locking link from being damaged. This embodiment is through setting up position sensor 43 in the automatic module of locking, not only can carry out the state monitoring feedback, can carry out spacing protection to the automatic module of locking moreover, reduces mechanical damage, increase of service life.
Referring to fig. 3, the identity recognition module 3 of this embodiment includes fingerprint identification module and finger inductor, and the finger inductor is used for responding to the finger input and awakens up fingerprint identification module work, and fingerprint identification module is used for gathering the fingerprint information of locking the wall tag operating personnel, and control circuit 1 is used for uploading fingerprint information to outside platform and verifies. The finger inductor can adopt infrared sensor, and fingerprint identification module has characteristics such as data volume is little, transmission is fast, can cooperate with narrowband thing networking NB-IOT's communication mode in this embodiment, realizes efficient identity information verification communication, can satisfy a plurality of intelligence and lock when locking the tablet and verify the communication demand to can not cause obvious communication delay, whole operation is used and is not influenced. Except the fingerprint identification module, the identity identification module 3 of this embodiment can also adopt modules such as face identification, identity password input to realize the input of identity information, also can adopt 5G communication module to realize the more high-efficient, quick communication between device and the platform simultaneously.
The control circuit of the present embodiment includes at least a controller, a power supply module, an NB-IOT communication module or a 5G communication module for communicating with an external platform. The controller is at least provided with an induction port of the energy switch, a collection port corresponding to the identity recognition module, a driving port corresponding to the automatic locking module and a control port of the alarm module. The control circuit of the embodiment only needs to complete data communication and logic control without complex data processing, and data processing links such as identity information verification are given charge of an external platform, so that the whole structure of each device is simple, the operation is efficient, the cost and the energy consumption are reduced, the service life is prolonged, the information verification is safer, and the possibility of downtime of the device is reduced.
Referring to fig. 1, the alarm module 5 of the present embodiment uses sound and/or light alarm, where the light alarm may use red, yellow, and green indications, preferably, red may represent that the locking and listing is violated or the locking and listing is reminded, yellow may represent that the locking and listing is in a locking and listing state, that is, the automatic locking module locks the energy switch 2, and green may represent that the energy switch 2 is normally turned on. In addition, the alarm module 5 in other indication modes can also be adopted, and the details are not repeated herein.
This embodiment locks the identity information acquisition of listing through identity identification module, send to outside platform through control circuit and verify, verify that the automatic module of locking of back control locks the energy switch, in order to lock the operation of listing, wherein, operating personnel need not to carry real lock, also need not to carry the sign, identity information is gathered by identity identification module, also need not to carry any article equally, like the fingerprint, characteristics such as people's face, this makes to lock the listing and uses convenient high-efficient, it is more humanized, it is intelligent, the inertia on the listing is locked in the solution, the difficult problem of supervision.
The present embodiment will now be described with reference to the locking and listing process of the present apparatus.
Referring to fig. 4, when the locking and listing is required, the energy switch is turned off, and when the turning-off signal of the energy switch is received, the control circuit controls the alarm module to send out a locking prompt to remind an operator of locking and listing.
Referring to fig. 4, when an operator inputs identity information, such as a fingerprint, through an identity recognition module, a control circuit uploads the identity information to an external platform or performs local verification on the identity information, wherein the platform checks whether the current identity information has authority to perform a locking and listing operation by calling pre-configured authorization information, the control circuit performs local verification according to the authorization information issued by the external platform to check whether the identity information has the authority to perform the locking and listing operation, and feeds back verification information to a cloud platform, if the identity information does not have the authority, the platform sends or the control circuit directly generates a verification failure instruction, an alarm module maintains locking reminding, and if the identity information has the authority, the platform sends or the control circuit directly generates a locking and listing instruction, so that the control circuit controls an automatic locking module to lock a power switch, and adjusts the alarm module to prompt that the current identity information is in a locking and listing state, has warned others that someone is working.
When the operation of the operator is finished and the state of the equipment needs to be recovered, the identity information can be input again through the identity recognition module, the control circuit uploads the identity information again to an external platform or carries out local verification on the identity information, preferably, the platform or the control circuit not only checks whether the current identity information has the authority to carry out locking and card hanging operation, and checks whether the current identity information is the same as the previous information when the locking card is used, if the current identity information is the same as the previous information, the platform sends or the control circuit directly generates an unlocking instruction, otherwise, the control circuit controls the automatic locking module to unlock the energy switch again according to the unlocking instruction, can open energy switch, so, can avoid different operating personnel to all have other people's unblocks under the condition of authority, can fully guarantee operating personnel's safety, improve the security of system greatly.
The application also provides an intelligent automatic tile locking and hanging system based on the embodiment, which comprises a cloud platform and the intelligent automatic tile locking and hanging device in any one of the embodiments; the cloud platform is communicated with the intelligent automatic locking and listing device and is used for verifying the identity information uploaded by the intelligent automatic locking and listing device and monitoring the locking and listing process.
In an implementation of this embodiment, high in the clouds platform and a plurality of intelligence are automatic to lock and are listed brand device stand-alone lock and list and be used for each intelligence to lock and list brand device respectively, each other do not influence. In another embodiment of this embodiment, the cloud platform is in networking communication with the plurality of intelligent automatic locking and listing devices, and is used for linkage locking and listing between the plurality of intelligent automatic locking and listing devices, and the linkage locking and listing devices are associated with each other and are not independent from each other, that is, are locked and unlocked in a linkage manner.
Preferably, the cloud platform is further used for staff authorization management of the locking and listing and work order establishment and management of the locking and listing operation. The intelligent automatic locking and listing device can be used for establishing and managing the intelligent automatic locking and listing device which needs to lock and listing under the cloud platform, and can realize mutual association among a plurality of devices so as to carry out linkage type locking and listing operation.
Preferably, the embodiment further comprises an equipment terminal, which is used for accessing the cloud platform to monitor the locking and listing process information in real time. The high in the clouds platform can receive the information and the storage management that intelligent automatic locking is listed as the device upload, and the form that forms the chart is specifically handled in order to facilitate the control, can the analyst, and listing time, analysis downtime on the analysis provides big data management layer analysis and so on. The device terminal such as a mobile phone, a tablet, a PC and the like can access the cloud platform to monitor the whole locking and listing process, and check the information of each locking and listing operation in history and the information of each locking and listing operation executed at present. This embodiment passes through high in the clouds platform and equipment terminal, can realize from the equipment end, to the management platform, again to the sharing of monitoring of operating personnel all sides, make comprehensive personnel know the present condition of listing on the equipment effectively in real time, not only can avoid some can remote control's equipment personnel to carry out the operation of breaking rules and regulations to equipment, can also have under the condition of certain distance apart from the energy switch at operating personnel, effectively, conveniently, look over the condition of listing on the lock in time, in order to improve the security of equipment use operation.
This embodiment will now be described with reference to the linked locking and listing process of the device.
Referring to fig. 5, when the linked locking and listing is required, the power switch A, B, C is turned off, and when the power switch A, B, C is turned off, the control circuit controls the alarm module A, B, C to send out a locking reminder to remind an operator to lock the listing.
Referring to fig. 5, when different or the same operators input their identity information A, B, C, such as fingerprints, through the identity recognition module A, B, C, the control circuit uploads the identity information A, B, C to the cloud platform or performs local verification on the identity information A, B, C, respectively, wherein the platform checks whether the current identity information A, B, C has authority to perform locking and branding operations by calling pre-configured authorization information, the local verification checks whether the identity information A, B, C has authority to perform locking and branding operations according to the configured authorization information issued by the cloud platform, and feeds back verification information to the cloud platform, the cloud platform sends an instruction based on the verification information obtained or fed back by the cloud platform itself, if there is no authority, a verification failure instruction is sent, the alarm module A, B, C maintains locking prompt, if there is authority, a lock-hang command is sent to cause the control circuits to control their respective auto-lock modules to lock the power switch A, B, C and adjust the alarm module A, B, C to indicate that it is currently in a lock-hang state, which alerts others that a job is being performed.
Referring to fig. 6, when the operator finishes the operation and needs to recover the device status, the identity module A, B, C may input the identity information A, B, C again, the control circuit uploads the identity information A, B, C again to the cloud platform or performs local verification on the identity information A, B, C, preferably, the platform or the control circuit not only checks whether the current identity information A, B, C has authority to perform the locking and branding operation, but also checks whether the current identity information A, B, C is the same as the previous information during locking and branding, if the authority is the same as the previous information, the cloud platform sends an unlocking instruction, otherwise, the verification fails, and after receiving the unlocking instruction, the control circuit controls the automatic locking module again to unlock the energy switch A, B, C, i.e. the energy switch A, B, C is turned on, the unlocking of other people under the condition that different operators have permission can be avoided, the safety of the operators can be fully ensured, and the safety of the system is greatly improved.
In the embodiment, the intelligent automatic locking and listing device is combined with the cloud platform, the cloud platform can not only uniformly verify identity information of a plurality of devices and monitor the locking and listing process, and realize independent locking and listing of each device, but also realize arbitrary networking among the devices through the same external platform, thereby realizing linkage locking and listing of a plurality of locking and listing devices, namely linkage locking and unlocking, meeting the locking and listing requirements of any equipment group, greatly improving the application range of the device, ensuring that the safety of the linkage locking and listing is more firm, avoiding the danger caused by independent unlocking of a certain device, greatly improving the safety of operators, further, the cloud platform can also carry out personnel authorization management and work order establishment and management of the locking and listing, being more convenient for enterprise supervision, and avoiding the dangerous behavior of locking and listing due to the inertia of the operators, the use is more convenient, efficient and safe.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, the changes are still within the scope of the present invention if they fall within the scope of the claims and their equivalents.
Claims (10)
1. The utility model provides an intelligence is automatic locks and hangs tablet device which characterized in that includes:
the control circuit is respectively in signal connection with the energy switch, the identity recognition module, the automatic locking module and the alarm module;
the control circuit is used for controlling the alarm module to send out locking reminding in response to a closing signal of the energy switch; the control circuit is used for uploading the identity information to an external platform for verification or locally verifying the identity information in response to the identity information acquired by the identity recognition module; and in response to the locking and listing instruction obtained by the identity information verification, the control circuit is used for controlling the automatic locking module to lock the energy switch and controlling the alarm module to prompt the locking and listing state.
2. The intelligent automatic locking and listing device of claim 1, wherein the automatic locking module comprises a servo motor, a locking link;
the energy switch is provided with a hole groove, and the servo motor is used for driving and controlling the locking connecting rod to be inserted into or withdrawn from the hole groove so as to realize locking and unlocking of the energy switch.
3. The intelligent automatic locking and hanging plate device according to claim 2, wherein the locking link comprises a push rod, a transmission rod and a bolt, one end of the push rod is connected with the servo motor, and the other end of the push rod is connected with the bolt through the transmission rod.
4. The intelligent automatic locking and listing device according to claim 2, wherein the automatic locking module further comprises a position sensor for detecting a locking state and an unlocking state of the locking link, and for limiting and protecting the servo motor and the locking link.
5. The intelligent automatic locking and hanging device as claimed in claim 1, wherein the identity recognition module comprises a fingerprint recognition module and a finger sensor, the finger sensor is used for sensing finger input and waking up the fingerprint recognition module to work, the fingerprint recognition module is used for collecting fingerprint information of an operator who locks and hanging the card, and the control circuit is used for uploading the fingerprint information to an external platform for verification.
6. The intelligent automatic card-locking device according to claim 1, wherein the control circuit is provided with an NB-IOT communication module or a 5G communication module for communicating with an external platform and networking with other intelligent automatic card-locking devices.
7. An intelligent automatic locking and listing system, which is characterized by comprising a cloud platform and the intelligent automatic locking and listing device as claimed in any one of claims 1 to 6;
the cloud platform is communicated with the intelligent automatic locking and listing device and used for verifying the identity information uploaded by the intelligent automatic locking and listing device and monitoring the locking and listing process.
8. The intelligent automatic locking and listing system according to claim 7, wherein the cloud platform is in communication with a plurality of the intelligent automatic locking and listing devices for networking among the plurality of the intelligent automatic locking and listing devices to enable coordinated locking and listing among the plurality of the intelligent automatic locking and listing devices.
9. The intelligent automatic card locking and hanging system according to claim 7, wherein the cloud platform is further used for card locking and hanging personnel authorization management and card locking and hanging operation work order establishment and management.
10. The intelligent automatic card-locking and hanging system according to any one of claims 7 to 9, further comprising a device terminal for accessing the cloud-end platform to monitor the card-locking and hanging process information in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120414160.6U CN214253309U (en) | 2021-02-25 | 2021-02-25 | Intelligent automatic locking and listing device and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120414160.6U CN214253309U (en) | 2021-02-25 | 2021-02-25 | Intelligent automatic locking and listing device and system |
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| CN214253309U true CN214253309U (en) | 2021-09-21 |
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