CN107605255B - Five-proof smart lock for outdoor equipment of distribution network - Google Patents

Abstract

The invention provides a five-proof intelligent lock for outdoor equipment of a power distribution network, comprising a lock body, a lock rod elastically arranged on the lock body, a lock cylinder rotatably arranged in the lock body, a lock core fixedly connected to the lock body and fixed in the lock body and arranged in the lock body. The lock tongue that is movably matched with the lock lever, the pressure plate movably arranged in the lock body to control the opening and closing, the first and second pressure plate springs arranged in the lock body to respectively support the pressure plate from the upper and lower sides, and the electronically controlled unlocking assembly; The unlocking component includes a control board, a solenoid, a jack, a return spring, and 2 input electrodes. When in use, the smart lock obtains electricity from the electronic key designed to work through the 2 input electrodes, and verifies the authorization information of the electronic key. Afterwards, it can be unlocked; at the same time, it can also be unlocked by the matching emergency mechanical key. The invention is easy to carry and use when in use; the use of the invention can improve the inspection and unlocking efficiency and accuracy of the power supply department, effectively prevent misoperation, and save the operation and maintenance cost of the five-proof lock of the outdoor equipment of the power supply department.

Description

Five-proof smart lock for outdoor equipment of distribution network

technical field

The invention relates to a protection lock for distribution network equipment, in particular to a five-proof smart lock for outdoor equipment of a distribution network.

Background technique

In the power system, five defenses usually refer to the abbreviation of five anti-error functions for high-voltage electrical equipment to ensure personal safety, which is one of the important measures for power safety. There are a large number of outdoor equipment in the distribution network, such as ring network cabinets, etc., which need to be protected by setting locks to prevent unrelated personnel from opening the equipment and causing losses or accidents. At present, the locks used in outdoor distribution network equipment are usually mechanical padlocks. Since there are a large number of locking devices such as ring network cabinets and residential substations in the same area, the number of padlocks is very large. If each lock has a specific corresponding lock Keys, inspectors need to carry a large number of keys during outdoor inspections. On the one hand, it is inconvenient to carry them. In order to solve this problem, the current practice of the power supply department is to use the same key to unlock the padlocks of the locked outdoor equipment in the same area, which can effectively solve the problems of inconvenience to carry a large number of keys and time-consuming to unlock and search for keys. The new problem is: on the one hand, there are hidden dangers of misoperation. Taking the common ring network cabinets on the street and road as an example, because there are often many ring network cabinets on the same street (road), and the shape and color of the ring network cabinets are basically the same, although There is a number plate on the ring network cabinet, but when the number plate is unclear or falls off, or the inspection personnel are negligent, etc., the ring network cabinet A should be opened for maintenance or operation, but the ring network cabinet B is opened, and the power distribution equipment is misoperation. It will bring economic losses and adverse effects, and even cause injury accidents in serious cases; on the other hand, due to the loss or copying of keys, the outdoor equipment of the power distribution network may be stolen by illegal personnel (a lot of copper) and destroyed by man. security risks. Therefore, it is very necessary to develop five-proof locks for outdoor equipment of distribution network that are easy to use, safe and reliable.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a five-proof smart lock for outdoor equipment of power distribution network that is convenient to carry and use, safe and reliable in use, and can effectively prevent misoperation in view of the problems in the prior art.

The technical scheme of the present invention is: the five-proof smart lock for outdoor equipment of the power distribution network of the present invention comprises a lock body, a lock lever spring arranged in the lock body, a lock lever elastically arranged on the lock body through the lock lever spring, a lock cylinder rotatably arranged in the lock body, a lock tongue that is fixedly connected to the lock cylinder and is movably matched with the lock rod, and an elastic limit pin arranged in the lock body to prevent the lock cylinder from falling from the lock body; Its structural features are: it also includes a pressure plate movably arranged in the lock body to control the opening and closing, and a first pressure plate spring and a second pressure plate arranged in the lock body to support the pressure plate from above and below and cooperate with the pressure plate respectively. Spring and electronically controlled unlocking components;

The above-mentioned electronically controlled unlocking assembly includes a control board, a solenoid, a push rod, a return spring, and two input electrodes disposed in the lock body and electrically connected to the outside; upper part; the lower end of the return spring is in contact with the upper end of the solenoid; the middle and lower part of the ejector rod is inserted into the solenoid;

The above-mentioned control board is provided with a power conversion module, a signal decoupling analysis module, a main control MCU, a memory and an electromagnet drive module; the input end of the above-mentioned power conversion module is electrically connected with two input electrodes; The board provides working power; the input terminal of the signal decoupling analysis module is electrically connected to the two input electrodes; the main control MCU is electrically connected to the signal decoupling analysis module and the memory signal respectively; the signal input terminal of the electromagnet drive module is electrically connected to the main control MCU. The control signal output end is electrically connected; the power output end of the electromagnet drive module is electrically connected with the solenoid.

A further scheme is: the upper and lower middle part of the above-mentioned lock body is provided with a lock cylinder installation hole with an open left end; The core installation holes are connected; the upper part of the pressure plate installation groove is provided with a solenoid installation countersunk hole whose lower port is communicated with the pressure plate installation groove; the upper left part of the lock body is provided with a control board accommodating cavity; the lower part of the lock body is provided with a control board accommodating cavity. There are 2 electrode passing holes, the upper port of the 2 electrode passing holes is communicated with the accommodating cavity of the control board, and the lower port is communicated with the lock cylinder installation hole of the lock body;

The lock cylinder is rotatably arranged in the lock cylinder installation hole of the lock body; the first pressure plate spring is arranged in the pressure plate installation groove of the lock body; the control board of the electric control unlocking assembly is arranged in the control board accommodating cavity of the lock body ; 2 input electrodes are each set up in the 2 electrode passing holes of the lock body; the above-mentioned ejector rod and the return spring are fixedly arranged in the solenoid mounting countersunk hole of the lock body, and the solenoid is fixedly arranged in the screw of the lock body. The middle and lower part of the counterbore is installed on the wire tube, and the lower part of the solenoid extends into the installation groove of the pressure plate of the lock body.

A further scheme is: the lock body is provided with a lock cylinder limit pin installation countersunk hole on the right side of the pressure plate installation groove; the right part of the lock cylinder is provided with an annular anti-drop limit recessed from the outer circumference of the lock cylinder position slot, and the position of the anti-drop limit slot matches the position of the installation countersunk hole of the lock cylinder limit pin of the lock body;

The above elastic limit pin is composed of a pin rod and a spring; the pin rod and the spring are arranged in the installation countersunk hole of the lock cylinder limit pin of the lock body; the upper end of the pin rod is offset against the spring; into the drop limit slot.

A further scheme is: the lower part of the above-mentioned lock body and the upper part of the right side are respectively provided with a lock rod installation countersunk hole; the above-mentioned lock rod is a U-shaped rod body part that is integrally formed by the upper cross rod, the lower cross rod and the right arc rod. The left part of the upper cross bar of the lock lever is provided with a locking notch; the middle part of the lower cross bar of the lock lever is provided with a limit notch; the above-mentioned lock lever spring is arranged at the left end of the lock lever installation counterbore at the lower part of the lock body; the lock lever The upper cross bar of the lock rod is inserted into the lock rod installation countersunk hole on the upper right side of the lock body; the lower cross rod of the lock rod is inserted into the lock rod installation countersunk hole at the lower part of the lock body, and the left end of the lower cross rod of the lock rod is connected to the lock rod installation countersunk hole. Lock lever spring elastic contact;

The shape of the upper end of the lock tongue is matched with the locking notch of the upper cross bar of the lock lever; the shape of the lower end of the lock tongue is matched with the limit notch of the lower cross bar of the lock lever.

A further scheme is: the left side of the above-mentioned lock cylinder is provided with a circular countersunk hole with a left end opening as an electronic keyhole; the lock cylinder is provided with a rightward countersunk hole that communicates with the electronic keyhole on the right part of the electronic keyhole, As a mechanical keyhole; the lock cylinder is provided with an electronic key limit slot whose open end communicates with the electronic keyhole on the right end wall of the electronic keyhole; the lock cylinder is provided with two conductive holes on the upper wall of the electronic keyhole When the lock is locked, the two conductive beads are in corresponding contact with the two input electrodes of the above-mentioned electronically controlled unlocking assembly; the upper end of the middle part of the lock cylinder is provided with a downwardly concave pressure plate giving way slot, and the pressure plate giving way groove is located in the lock body. The lower part of the pressure plate installation groove is communicated with the pressure plate installation groove of the lock body; the middle part of the lock cylinder is provided with several movable blades, and the upper end of each blade is communicated with the pressure plate of the lock cylinder.

The above-mentioned pressing plate is movably arranged in the space formed by the butting of the pressing-plate mounting groove of the lock body and the pressing-plate yielding groove of the lock cylinder, and the upper end face of the pressing plate is in contact with the lower end of the first pressing-plate spring; the above-mentioned second pressing-plate spring is arranged in the The pressing plate of the lock cylinder gives way to the groove, and the upper end of the second pressing plate spring is abutted against the lower end surface of the pressing plate; the lower end of the second pressing plate spring is abutted against the blade of the lock cylinder.

A further solution is as follows: the above-mentioned first pressure plate spring and second pressure plate spring are each provided with two pieces.

An electronic key used for the above-mentioned five-proof smart lock for outdoor equipment of a distribution network, its structural features are: including a shell and a circuit device;

The shell includes a main body part and a plug-in part that are integrally connected; the plug-in part is a cylindrical part, and the plug-in part is provided with a limit protrusion;

The circuit device includes an MCU, a signal and power coupling module, a second memory, a communication module, a SIM card, a lithium battery, a battery management module and a power module arranged in the casing, and a key switch and an LCD display screen arranged on the main body of the casing. , a USB interface and a charging interface, and two annular-shaped output electrodes arranged on the outer peripheral wall of the socket part of the above-mentioned shell;

The signal and power supply coupling module, the second memory, the communication module, the battery management module, the key switch, the LCD display screen and the USB interface are respectively electrically connected to the MCU signal; the output electrode is electrically connected to the signal and power supply coupling module; the SIM card is electrically connected to the communication module The signal is electrically connected; the battery management module is electrically connected with the lithium battery and the charging interface respectively; the power module is electrically connected with the battery management module; wherein:

The key switch is used to control the opening and closing of the power supply and the opening and closing of remote wireless communication;

LCD display for real-time display of information;

The USB interface is used to connect with the management server of the power supply department during use to realize information exchange including obtaining the unlock key on the spot;

The charging interface is used for external power supply during use, and the lithium battery is charged through the battery management module;

Lithium battery, responsible for power supply;

Battery management module, controlled by MCU, responsible for battery charging management, battery output control and battery under-voltage protection;

The power supply module obtains power from the lithium battery through the battery management module, and provides working power for the circuit device after conversion;

SIM card, used to store unlock key and unlock authorization information;

The communication module is used to realize the remote information interaction between the electronic key and the management server, and the information interaction between the SIM card and the MCU;

The second memory is used for information storage and interaction with the MCU;

The signal and power coupling module is used to couple the unlock key information sent by the MCU with the power obtained from the power module and output the coupled power to the output electrode;

The output electrode is used for outputting the power coupled with the unlocking key information.

The present invention has positive effects: (1) The five-proof smart lock for outdoor equipment of the power distribution network of the present invention is structurally designed so that when in use, the inspection personnel of the power supply department only need to carry an authorized electronic key. It can open the corresponding smart locks in the smart locks used by all the outdoor equipment of the distribution network in the same area, and the electronic key can be authorized by remote wireless communication on site, which can effectively solve the traditional method that the inspectors need to carry a large number of keys during outdoor inspections. There are technical problems that it is inconvenient to carry, and it takes time and labor to search for a corresponding key among a large number of keys when unlocking. (2) The five-proof smart lock for the outdoor equipment of the distribution network of the present invention, when in use, enables the inspection personnel to only open the inspection target within the specified time through the key authorization verification mechanism between the smart lock and the electronic key The smart lock on the device can not be unlocked if the wrong lock is found or the lock cannot be unlocked within the specified time, which can effectively solve the technical problem of easy misoperation caused by the use of a key to open the padlocks of outdoor equipment in all distribution networks in the same area in the prior art. . (3) The five-proof smart lock for the outdoor equipment of the distribution network of the present invention, through the rational structural design of the electric control unlocking component and the mechanical lock component in the lock body, makes the overall volume small, and can be effectively applied to the outdoor distribution network at present. It is used for device locking and has strong applicability. (4) The five-proof smart lock for the outdoor equipment of the distribution network of the present invention, through its structural design, can be unlocked with an electronic key, or can be unlocked with an emergency mechanical key when the electronically controlled unlocking component fails or in an emergency. On the basis of convenience and efficiency, safety and reliability are also guaranteed. (5) The five-proof smart lock for the outdoor equipment of the distribution network of the present invention adopts the structural design of the electronically controlled unlocking assembly. When in use, the electronically controlled unlocking assembly is powered by the electronic key, and there is no need to set a battery inside. The number of five-proof locks used in outdoor equipment is huge, so using the smart lock of the present invention can greatly save manpower, time and hardware costs for the maintenance of the five-proof locks by the power supply management department. (6) The five-proof smart lock for the outdoor equipment of the power distribution network of the present invention has a limited time for unlocking the electronic key authorized to unlock, and it will become invalid if it is out of date, thereby effectively preventing the loss or copying of the key in the prior art. The reason is that the outdoor equipment of the distribution network has hidden safety hazards that are stolen by illegal personnel and man-made damage.

Description of drawings

Fig. 1 is the structural representation of the present invention;

2 is a schematic diagram of the positional relationship between the pressing plate, the lock body and the lock cylinder when the present invention is locked;

3 is a schematic structural diagram of the present invention when the electronic key is unlocked, and the figure also shows the cooperation relationship between the electronic key and the smart lock;

4 is a schematic diagram of the positional relationship between the ejector rod and the pressure plate, the lock body and the lock cylinder of the electronically controlled unlocking assembly when the electronic key is unlocked according to the present invention;

5 is a schematic structural diagram of the present invention when the emergency mechanical key is unlocked, and the figure also shows the cooperation relationship between the emergency mechanical key and the smart lock;

6 is a schematic diagram of the positional relationship among the pressure plate, the lock body, the lock cylinder and the ejector rod of the electronically controlled unlocking assembly when the emergency mechanical key is unlocked according to the present invention;

7 is a schematic block diagram of a circuit structure of an electronically controlled unlocking assembly;

Fig. 8 is the external structure schematic diagram of the electronic key matched with the present invention;

Fig. 9 is the right side view of Fig. 8;

Fig. 10 is a schematic block diagram of the circuit structure of the electronic key matched with the present invention.

The reference numerals in the above drawings are as follows:

Lock body 1, pressure plate installation slot 1-1; lock lever 2, lock lever spring 3, lock cylinder 4, electronic key hole 4-1, mechanical key hole 4-2, electronic key limit slot 4-3, conductive beads 4 -4, pressure plate yield slot 4-5, blade 4-6, anti-drop limit slot 4-7; lock tongue 5, elastic limit pin 6, pin 6-1, spring 6-2; pressure plate 7, the first A pressure plate spring 8, a second pressure plate spring 9, an electronically controlled unlocking assembly 10, a control board 10-1, an input electrode 10-2, a solenoid 10-3, a push rod 10-4, and a return spring 10-5.

Electronic key 100, main body part 100-1, socket part 100-2, limit protrusion 100-3, output electrode 100-4, key switch 100-5, LCD display 100-6, USB interface 100-7, charging interface 100-8;

Emergency mechanical key 101.

Detailed ways

The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

(Example)

In this embodiment, when describing the orientation, the direction facing FIG. 1 is the front in the description, the direction facing away from FIG. 1 is the rear in the description, and the up-down and left-right directions in FIG. 1 are still the description up and down, left and right directions.

1 and 2, the five-proof smart lock for the outdoor equipment of the power distribution network in this embodiment is mainly composed of a lock body 1, a lock rod 2, a lock rod spring 3, a lock cylinder 4, a lock tongue 5, and an elastic limit pin 6 , a pressure plate 7, a first pressure plate spring 8, a second pressure plate spring 9 and an electronically controlled unlocking assembly 10.

The lower part of the lock body 1 and the upper right part of the right side are respectively provided with a lock rod installation countersunk hole; the upper and lower middle part of the lock body 1 is provided with a lock cylinder installation hole with an open left end; There is a square concave pressure plate installation groove 1-1, and the open end of the pressure plate installation groove 1-1 is communicated with the lock cylinder installation hole of the lock body 1; the upper part of the pressure plate installation groove 1-1 is provided with a lower port and the pressure plate installation groove 1- 1. The solenoid installation countersunk hole in communication; the lock body 1 is provided with a lock core limit pin installation countersunk hole on the right side of its pressure plate installation groove 1-1; the upper left part of the lock body 1 is provided with a control board accommodating cavity; the lock body 1. There are 2 electrode passing holes in the lower part of its control board accommodating cavity, the upper ports of the 2 electrode passing holes communicate with the control board accommodating cavity, and the lower ports communicate with the lock cylinder installation hole of the lock body 1.

The lock rod 2 is a U-shaped rod body part composed of an upper cross rod, a lower cross rod and a right arc rod; the left part of the upper cross rod of the lock rod 2 is provided with a locking gap; the lower cross rod of the lock rod 2 The middle part of the rod is provided with a limit gap; the lock rod spring 3 is set at the left end of the lock rod installation countersunk hole at the lower part of the lock body 1; the upper cross rod of the lock rod 2 is inserted into the lock rod installation counterbore on the upper right side of the lock body 1 Inside; the lower crossbar of the lock lever 2 is inserted into the lock lever installation countersunk hole at the lower part of the lock body 1, and the left end of the lower crossbar of the lock lever 2 is in contact with the lock lever spring; the lock lever spring 3 is used to unlock the lock lever. Lock lever 2 pops out to the right.

The lock cylinder 4 is rotatably arranged in the lock cylinder installation hole of the lock body 1; the left side of the lock cylinder 4 is provided with a circular countersunk hole with an open left end as the electronic key hole 4-1; the lock cylinder 4 is in its electronic key hole The right part of 4-1 is provided with a countersunk hole to the right as a mechanical key hole 4-2. The left end of the mechanical key hole 4-2 communicates with the right end of the electronic key hole 4-1; the lock cylinder 4 is in its electronic key hole 4 The right end wall of -1 is provided with an electronic key limit slot 4-3 that communicates with the electronic key hole 4-1; the lock cylinder 4 is provided with two conductive beads 4 on the upper wall of its electronic key hole 4-1 -4, and the positions of the 2 conductive beads 4-4 are matched with the positions of the 2 electrode passing holes of the lock body 1; the upper end of the middle part of the lock cylinder 4 is provided with a downwardly concave pressure plate receding groove 4-5, and The pressure plate leaving groove 4-5 is located below the pressure plate installation groove 1-1 of the lock body 1 and communicates with the pressure plate installation groove 1-1 of the lock body 1; the middle of the lock cylinder 4 is provided with a number of movable blades 4-6 , the upper end of each blade 4-6 is communicated with the pressure plate yielding groove 4-5 of the lock cylinder 4; the right part of the lock cylinder 4 is provided with an annular anti-drop limit groove 4- 7, and the position of the anti-drop limit groove 4-7 is matched with the position of the installation countersunk hole of the lock cylinder limit pin of the lock body 1.

The lock tongue 5 is movably arranged in the lock body 1, and the lock tongue 5 is arranged on the right part of the lock cylinder 4 and is fixedly connected with the lock cylinder 4 and follows the lock cylinder 4; The locking notch of the upper cross bar is matched;

The elastic limit pin 6 is composed of a pin rod 6-1 and a spring 6-2; the pin rod 6-1 and the spring 6-2 are arranged in the installation countersunk hole of the lock cylinder limit pin of the lock body 1; The upper end is in contact with the spring 6-2; the lower end of the pin rod 6-1 extends into the anti-drop limit groove 4-7 of the lock cylinder 4 under the elastic force of the spring 6-2, thereby preventing the lock cylinder through the elastic limit lock 6 4. It falls off from the installation hole of the lock cylinder of the lock body 1.

The pressure plate 7 is movably arranged in the space formed by the connection between the pressure plate installation groove 1-1 of the lock body 1 and the pressure plate abutment groove 4-5 of the lock cylinder 4, and the upper end of the pressure plate 7 is installed with the pressure plate provided on the lock body 1. The lower ends of the two first pressure plate springs 8 in the groove 1-1 are in contact with each other; the lower end of the pressure plate 7 is in contact with the two second pressure plate springs 9 in the pressure plate receding groove 4-5 of the lock cylinder 4; The upper end of the platen spring 8 is in contact with the lock body 1; the lower ends of the two second platen springs 9 are in contact with the corresponding blades 4-6 on the lock cylinder 4; in the locked state, when the two first platen springs 8 and the two second platen springs Under the elastic force of the pressure plate spring 9, the pressure plate 7 is located at the joint of the pressure plate installation groove 1-1 of the lock body 1 and the pressure plate receding groove 4-5 of the lock cylinder 4, thereby restricting the rotation of the lock cylinder 4 relative to the lock body 1 to achieve locking. (as shown in picture 2).

The electronically controlled unlocking assembly 10 includes a control board 10-1, an input electrode 10-2, a solenoid 10-3, an ejector rod 10-4 and a return spring 10-5. The control board 10-1 is set in the control board accommodating cavity of the lock body 1; the input electrode 10-2 is provided with two, one of which is a positive electrode and the other is a negative electrode; the input electrode as the positive electrode also serves as a signal input terminal ; 2 input electrodes 10-2 are each set up in the 2 electrode passage holes of the lock body 1, and each of the 2 input electrodes 10-2 is in contact with the conductive beads 4-4 of a lock core 4 during locking; The return spring 10-5 is sleeved on the upper part of the ejector rod 10-4; the middle and lower part of the ejector rod 10-4 is inserted into the solenoid 10-3; The upper ends are in contact with each other; the solenoid 10-3 is fixed in the middle and lower part of the solenoid mounting countersunk hole of the lock body 1, and the lower part of the solenoid 10-3 protrudes into the pressure plate mounting groove 1-1 of the lock body 1 The material of the ejector rod 10-4 is an electromagnet, and the solenoid 10-3 generates a magnetic force when energized so that the ejector rod 10-4 overcomes the elastic force of the return spring 10-5 and extends downward from the solenoid 10-3, When the solenoid 10-3 loses power, the ejector rod 10-4 is reset under the action of the return spring 10-5.

Referring to FIG. 7, the control board 10-1 is provided with a power conversion module, a signal decoupling analysis module, a main control MCU, a memory and an electromagnet drive module. Among them:

The power conversion module is used to provide working power for the control board 10-1 when it is powered; the power conversion module is electrically connected with the two input electrodes 10-2;

The signal decoupling analysis module is used to decouple and analyze the unlock key and authorization information sent by the electronic key from the power supply sent by the electronic key and send it to the main control MCU; the signal decoupling analysis module and the two input electrodes 10-2 electrical connection;

The main control MCU is used to judge whether the electronic key is authorized to unlock, and accordingly control whether the nut tube 10-3 is energized through the electromagnet drive module, so as to correspondingly control whether to unlock; the main control MCU is electrically connected to the signal decoupling analysis module. ;

The electromagnet drive module is used for correspondingly controlling the power on and off of the solenoid 10-3 according to the control signal of the main control MCU; the electromagnet drive module is electrically connected with the main control MCU signal;

The memory is used to interact with the information storage of the main control MCU; the memory is electrically connected with the main control MCU in two-way signals.

The five-proof smart lock for the outdoor equipment of the power distribution network in this embodiment is normally unlocked with the electronic key 100 of the matching design when in use; the emergency mechanical key 101 is used as a backup for emergency unlocking.

Referring to FIGS. 8 to 10 , the electronic key 100 designed in conjunction with the five-proof smart lock for the outdoor equipment of the distribution network in this embodiment is mainly composed of a casing and a circuit device.

The housing includes a main body part 100-1 and a socket part 100-2 that are integrally connected; the socket part 100-2 is a cylindrical part, and the size of the socket part 100-2 is the same as the size of the electronic key hole 4-1 of the lock cylinder 4 Matching; a limit protrusion 100-3 is arranged above the right end of the plug-in portion 100-2, and the limit protrusion 100-3 cooperates with the electronic key limit groove 4-3 of the lock cylinder 4 when in use.

The circuit device includes MCU, signal and power coupling module, second memory, communication module, SIM card, lithium battery, battery management module, power module, output electrode 100-4, key switch 100-5, LCD display screen 100-6, The USB interface 100-7 and the charging interface 100-8; wherein, the MCU, the signal and power coupling module, the second memory, the SIM card, the communication module, the lithium battery, the battery management module and the power module are arranged in the casing; the output electrode 100- 4. There are two, two output electrodes 100-4 are arranged in the shape of a ring on the outer peripheral wall of the socket part 100-2 of the casing; the key switch 100-5, the LCD display screen 100-6, the USB interface 100- 7 and the charging port 100-8 are provided on the main body portion 100-1 of the housing. The signal and power coupling module, the second memory, the communication module, the battery management module, the key switch 100-5, the LCD display screen 100-6 and the USB interface 100-8 are respectively electrically connected with the MCU signal; the output electrode 100-4 and the signal and the The power coupling module is electrically connected; the SIM card is electrically connected to the communication module; the battery management module is electrically connected to the lithium battery and the charging interface 100-8 respectively; the power module is electrically connected to the battery management module.

The functions of each component of the circuit device of the electronic key 100 when in use are as follows:

The key switch 100-5 is used to control the opening and closing of the power supply and the opening and closing of the remote wireless communication;

LCD display 100-6 for real-time display of information;

The USB interface 100-7 is used for plugging with the management server of the power supply department to realize information exchange including obtaining the unlock key on the spot;

The charging interface 100-8 is used for external power supply to charge the lithium battery through the battery management module;

Lithium battery, responsible for power supply;

Battery management module, controlled by MCU, responsible for battery charging management, battery output control and battery under-voltage protection;

The power supply module obtains power from the lithium battery through the battery management module, and provides working power for the circuit device after conversion;

SIM card, used to store unlock key and unlock authorization information;

The communication module is used to realize the remote information interaction between the electronic key and the management server, and the information interaction between the SIM card and the MCU;

The second memory is used for information storage and interaction with the MCU;

The signal and power coupling module is used for coupling the unlocking key information sent by the MCU with the power supply obtained from the power supply module, and the power supply coupled with the unlocking key information is output to the output electrode 100-4;

The output electrode 100-4 is used for outputting a power source coupled with unlocking key information.

(application example)

The five-proof smart lock (hereinafter referred to as the smart lock) for the outdoor equipment of the distribution network in the foregoing embodiment is applied to the locking of the outdoor equipment of the distribution network. The main control MCU of each smart lock on the control board 10-1 of its electronically controlled unlocking assembly 10 has built-in smart lock self-number information and key verification mechanism; The key authorization mechanism of the key 100 cooperates.

When inspecting the outdoor equipment of the power supply department, they only need to carry one electronic key 100; the inspector can use the USB interface 100-7 of the electronic key 100 to be on the management server of the power supply department before departure. The unlocking key and unlocking authorization information can also be obtained remotely from the management server through wireless communication by the inspection personnel at the inspection and unlocking site; the unlocking authorization information of the electronic key 100 includes the key number, the intelligence to be unlocked Lock number, valid unlock start time and valid unlock end time information.

Referring to FIGS. 3 and 4 , when the lock needs to be unlocked, the inspector inserts the electronic key 100 into the electronic key hole 4-1 of the lock cylinder 4 of the smart lock, and the electronic key 100 passes through the 2 of the socket part 100-2 of the housing. The output electrodes 100-4 are electrically connected to the two input electrodes 10-2 of the electronically controlled unlocking assembly 10 of the smart lock through the two conductive beads 4-4 of the lock cylinder 4; -5 Turn on the electronic key, the electronically controlled unlocking assembly 10 of the smart lock starts to work when the electronic key 100 is powered on:

The signal decoupling analysis module on the control board 10-1 of the electronically controlled unlocking assembly 10 parses the unlocking key and unlocking authorization information from the power supply coupled with the unlocking key and unlocking authorization information output from the electronic key 100 and sends them to the smart lock The main control MCU; the main control MCU extracts its own lock number, combines the key number, the effective unlocking start time, and the effective unlocking termination time, and uses the prior art DES encryption algorithm to calculate a verification key. The verification key is compared with the unlocking key sent by the electronic key 100. If the two keys are different, or the current time is not between the valid unlocking start time and the valid unlocking end time, the main control MCU of the smart lock determines that the electronic key The key 100 is not authorized and refuses to open the lock; if the two keys are the same, and the current time is between the valid unlocking start time and the valid unlocking end time, the main control MCU of the smart lock confirms that the electronic key 100 has been authorized. When the main control MCU supplies power to the solenoid 10-3 through the electromagnet drive module, a magnetic force is generated when the solenoid 10-3 is energized, so that the ejector rod 10-4 made of the electromagnet overcomes the elastic force of the return spring 10-5 from the solenoid 10-3 extends downward, and the ejector rod 10-4 pushes the pressure plate 7 down into the pressure plate receding groove 4-5 of the lock cylinder 4 (as shown in Figure 4); at this time, the electronic key 100 drives the lock cylinder 4 to rotate, When the lock cylinder 4 rotates beyond a certain angle (preferably a 3° angle in this embodiment), the conductive beads 4-4 on the lock cylinder 4 are out of contact with the two input electrodes 10-2 of the electronically controlled unlocking assembly 10 of the smart lock, and the electrical The control unlocking assembly 10 loses power, and the ejector rod 10-4 is reset under the elastic force of the return spring 10-5; continue to rotate the lock cylinder 4 so that the lock tongue 5 that follows the lock cylinder 4 is separated from the lock rod 2, and the lock rod 2 is in Under the action of the elastic force of the lock lever spring 3, it moves to the right to realize the unlocking, and the inspection personnel can perform maintenance on the corresponding outdoor equipment of the power distribution network. When the lock is closed after the maintenance is completed, the inspector drives the lock cylinder 4 to rotate in the opposite direction to the unlocking rotation direction through the electronic key 100. After the rotation is in place, the pressure plate 7 returns to the locked position under the action of the reset elastic force of the second pressure plate spring 9 below it. , at this time, the lock lever 2 is pressed down, and the lock lever 2 is engaged with the lock tongue 5 to achieve locking; since the limit protrusion 100-3 on the outer shell of the electronic key 100 is matched with the electronic key limit groove 4-3 of the lock cylinder 4, When locking, the lock cylinder 4 must be restored to the initial locking position before the key can be pulled out, so as to ensure the accurate reset of the lock cylinder 4 and the pressing plate 7 when the lock is locked, so as to facilitate the next unlocking.

Referring to Figures 5 and 6, the emergency mechanical key 101 is used by the power supply management department as a backup for emergency unlocking. When a smart lock has an electronic key unlocking failure or is in an emergency, the smart lock can be opened through the emergency mechanical key 101:

Insert the emergency mechanical key 101 into the mechanical key hole 4-2 of the lock cylinder 4, the blades 4-6 in the lock cylinder 4 move left and right along the notch on the emergency mechanical key 101, and the blades 4-6 are connected with the groove on the emergency mechanical key 101. The openings are engaged, so that the pressure plate yielding grooves 4-5 of the lock cylinder 4 below the pressure plate 7 form a complete plane, and the second pressure plate spring 9 is displaced downward, and the pressure plate 7 sinks into the pressure plate under the action of the first pressure plate spring 8. Position slot 4-5, use the emergency mechanical key 101 to drive the lock cylinder 4 to rotate in the lock body 1, so that the lock tongue 5 is separated from the lock rod 2, and the lock rod 2 moves to the right under the elastic force of the lock rod spring 3 to realize unlocking. . The principle of unlocking the emergency mechanical key 101 is the same as that of the mechanical key in the prior art to open the blade lock, and will not be described in detail.

It can be seen from the foregoing that the use of the smart lock of the present invention in the outdoor equipment of the power distribution network has the following technical effects: First, under normal circumstances, the inspection personnel of the power supply department only need to carry an electronic key 100, and by obtaining the key The electronic key 100 can be applied to the smart locks used by all distribution network outdoor equipment in the same area, so as to effectively solve the inconvenience of carrying a large number of keys in the traditional method, and the need for a large number of keys when unlocking. It is time-consuming and laborious to search for the corresponding key in the key; secondly, through the key authorization verification mechanism of the smart lock and the electronic key 100, the inspection personnel can only open the smart lock on the inspection target within the specified time, and find the smart lock. The lock cannot be unlocked by wrong lock or within a specified time, thereby effectively solving the problem of misoperation caused by the padlock in the prior art that uses one key to open all outdoor equipment in the same area.

The above embodiments and application examples are illustrative of the specific implementations of the present invention, rather than limiting the present invention. Those skilled in the art can also make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should be included in the scope of patent protection of the present invention.

Claims (2)

1. A five-proof smart lock for outdoor equipment of a power distribution network, comprising a lock body (1), a lock lever spring (3) arranged in the lock body (1), elastically arranged through the lock lever spring (3) The lock rod (2) on the lock body (1), the lock cylinder (4) rotatably provided in the lock body (1), and the lock cylinder (4) provided in the lock body (1) are fixedly connected with the lock cylinder (4). And the lock tongue (5), which is in dynamic cooperation with the lock rod (2), and the elastic limit pin (6) provided in the lock body (1) to prevent the lock cylinder (4) from falling from the lock body (1) It is characterized in that: it also includes a pressure plate (7) movably arranged in the lock body (1) for controlling the opening and closing, and is arranged in the lock body (1) for supporting the pressure plate (7) from above and below, respectively. ) and the first pressure plate spring (8), the second pressure plate spring (9) and the electronically controlled unlocking assembly (10) that are in dynamic cooperation with the pressure plate (7); The electronically controlled unlocking assembly (10) includes a control board (10-1), a solenoid (10-3), an ejector rod (10-4), a return spring (10) arranged in the lock body (1) -5) and two input electrodes (10-2) arranged in the lock body (1) and electrically connected to the outside; the return spring (10-5) is sleeved on the upper part of the ejector rod (10-4) ; The lower end of the return spring (10-5) is in contact with the upper end of the solenoid (10-3); the middle and lower parts of the ejector rod (10-4) are inserted into the solenoid (10-3); The control board (10-1) is provided with a power conversion module, a signal decoupling analysis module, a main control MCU, a memory and an electromagnet drive module; an input end of the power conversion module and two input electrodes (10-2) ) is electrically connected; the power conversion module provides working power for the control board (10-1) when the power is turned on; the input end of the signal decoupling analysis module is electrically connected to the two input electrodes (10-2); the main control MCU is respectively connected to the signal The coupling analysis module is electrically connected with the memory signal; the signal input end of the electromagnet drive module is electrically connected with the control signal output end of the main control MCU; the power output end of the electromagnet drive module is electrically connected with the solenoid (10-3). 2. The five-proof smart lock for distribution network outdoor equipment according to claim 1, characterized in that: the upper and lower middle of the lock body (1) is provided with a lock cylinder installation hole with an open left end; the lock body (1) There is a pressure plate installation groove (1-1) concave upwards in the middle of the lock, and the open end of the pressure plate installation groove (1-1) is communicated with the lock cylinder installation hole of the lock body (1); the pressure plate installation groove (1-1) The upper part of the lock body (1) is provided with a solenoid installation countersunk hole whose lower port is communicated with the pressure plate installation groove (1-1); the upper left part of the lock body (1) is provided with a control board accommodating cavity; the lock body (1) is accommodated in its control board The lower part of the cavity is provided with two electrode passing holes, the upper ports of the two electrode passing holes are communicated with the control board accommodating cavity, and the lower ports are communicated with the lock cylinder installation hole of the lock body (1); The lock cylinder (4) is rotatably arranged in the lock cylinder installation hole of the lock body (1); the first pressure plate spring (8) is arranged in the pressure plate installation groove (1-1) of the lock body (1) ; the control board (10-1) of the electronically controlled unlocking assembly (10) is arranged in the control board accommodating cavity of the lock body (1); the two input electrodes (10-2) are located in the lock body (1) One electrode passing hole is provided in each; the ejector rod (10-4) and the return spring (10-5) are fixedly arranged in the solenoid mounting countersunk hole of the lock body (1), the solenoid (10-3) ) is fixedly arranged in the middle and lower part of the mounting counterbore of the solenoid (10-3) of the lock body (1), and the lower part of the solenoid (10-3) protrudes into the pressure plate mounting groove (1-1) of the lock body (1).