CN110409929B - Ground wire lockset, ground wire anti-misoperation system and related method - Google Patents

Ground wire lockset, ground wire anti-misoperation system and related method Download PDF

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Publication number
CN110409929B
CN110409929B CN201910701925.1A CN201910701925A CN110409929B CN 110409929 B CN110409929 B CN 110409929B CN 201910701925 A CN201910701925 A CN 201910701925A CN 110409929 B CN110409929 B CN 110409929B
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China
Prior art keywords
ground wire
lock
unlocking
assembly
radio frequency
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CN201910701925.1A
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Chinese (zh)
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CN110409929A (en
Inventor
王靖晖
黄梦
王金兴
黄玉鹏
黄建林
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Changyuan Contron Power Security Technology Co Ltd
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Changyuan Contron Power Security Technology Co Ltd
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Priority to CN201910701925.1A priority Critical patent/CN110409929B/en
Publication of CN110409929A publication Critical patent/CN110409929A/en
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B65/00—Locks or fastenings for special use
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00896—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys specially adapted for particular uses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member

Abstract

A ground wire lock, the false proof system of the ground wire, the ground wire hangs, tears the state detection method, prevent hanging, leak the method to tear down the ground wire, wherein the ground wire lock includes lock body and unblock assembly and ground wire detection assembly that lock body set up, unblock assembly include one controlled unblock bolt that moves between an unblock position and a blocking position, when the plug connector of the ground wire assembly is inserted to the lock control position in the lock, said unblock bolt and said locked structure are locked or unlocked; the ground wire detection assembly comprises a sensing unit and a sensed unit, the sensed unit is arranged on the lock control part, the sensing unit is arranged on the lock body, and the installation position of the sensing unit meets the following conditions: and when the plug connector is positioned at the lock control position, the sensing unit senses the sensed unit. The ground wire assembly and the ground wire pile can be locked or unlocked, and whether the ground wire assembly and the ground wire pile are matched to a locking position or not can be detected, namely whether the ground wire assembly is correctly inserted into the ground wire pile or not is detected.

Description

Ground wire lockset, ground wire anti-misoperation system and related method
All as the field of technology
The invention relates to the technical field of power transmission and transformation, in particular to a device and a method for connecting a ground wire cable and a ground wire pile.
All the above-mentioned background techniques
In order to maintain the safety of the operation of the power grid, the lines and electrical equipment need to be detected or periodically overhauled and maintained before being put into operation. In the detection and maintenance operations of the electrical equipment, temporary grounding wires are required to be hung before maintenance and detection for ensuring the life safety of operators, and meanwhile, the operation safety of the whole power grid in the power transmission process after maintenance can be ensured. In the prior art, a mechanical lock is usually installed on a ground wire connector or a ground pile hole, and the hanging/dismounting of the temporary ground wire is judged only by the operation action of the mechanical lock locked by a computer key (a lock may be operated by the computer key, but the ground wire is not really hung), so that whether the temporary ground wire is really hung on the ground pile cannot be judged.
And a ground wire state collector (not shown) is adopted by part of the temporary grounding wires to collect the hanging state of the temporary grounding wires. The state collector is installed on the ground wire head of the temporary grounding wire (namely the head of the ground pile), a power supply and a magnetic induction device (such as a reed pipe) are arranged in the state collector, a magnet is arranged on the ground wire pile, when the state collector is close to the ground wire pile, the magnetic induction device senses the magnet and generates an induction signal, the signal is fed back to a computer key and an anti-misoperation system through the power supply and wireless communication equipment, and therefore the state of ground wire hanging connection is determined through the generation of the induction signal.
Although the state collector realizes the real-time collection of the ground wire hanging/dismantling state, the collector can only reflect the approaching distance between the ground wire head and the ground wire pile, cannot reflect the locking of the ground wire head on the ground wire pile, and cannot accurately feed back the hanging/dismantling state of the temporary ground wire. If the operator goes to the idle process (the collector collects the state of the ground wire pile, but the temporary grounding wire is not really hung on the ground wire pile), the temporary grounding wire is not really hung on the ground wire pile, and safety accidents are easy to happen when electrical equipment is overhauled.
Secondly, after the maintenance is finished, the ground wire needs to be removed to transmit power to the electrical equipment, but if the ground wire is forgotten to be removed (the state of the removal of the ground wire is not obtained, the ground wire is not really removed), direct power transmission is carried out, a short-circuit accident occurs, and the electrical equipment and the power grid facility are damaged.
All the contents of the invention
The first purpose of the present invention is to provide a ground wire lock (in the case where no specific description is given, the terms "ground wire" and "ground wire assembly" in the present invention refer to temporary ground wires), which can detect whether the ground wire assembly and the ground wire pile are effectively hung on the ground wire pile (i.e. locked by the ground wire pile). The first purpose of the invention is realized by the following technical scheme:
a ground wire lock is used for locking a ground wire assembly on a ground wire pile or unlocking the ground wire assembly from the ground wire pile, the ground wire assembly comprises a plug connector, and the ground wire pile is provided with a plug hole; the ground wire lock is fixedly arranged on the ground wire pile, and a lock control hole is formed in the position, corresponding to the insertion hole, of the ground wire lock; the plug connector is provided with a lock control part which extends into a lock control position through the plug hole and the lock control hole, and a locked structure is arranged on the lock control part; be equipped with on the lock body and be used for right the unblock subassembly that locks is carried out by the lock structure, the ground wire tool to lock still includes ground wire detection subassembly, and this ground wire detection subassembly includes a sensing unit and one by the sensing unit, by the sensing unit set up in lock portion is last, the sensing unit set up in on the lock body and mounted position satisfy following condition: when the plug connector is located at the lock control position, the sensing unit can sense the sensed unit.
By above-mentioned structure, the plug connector of ground wire subassembly must insert the spliced eye and be connected with the ground wire stake, then stretch into the lock accuse hole, by the locking of ground wire tool to lock, and ground wire tool to lock has included ground wire detection component, when the plug connector is located the lock accuse position, detection component can detect the plug connector of ground wire and inserted the ground wire stake, this scheme can ensure that the plug connector of ground wire effectively inserts the ground wire stake after, just sensing the plug connector of ground wire subassembly, the state collector of avoiding appearing among the prior art only can feed back the ground wire and the ground wire stake is close but can't feed back the effective technical problem of articulate on the ground wire stake of ground wire. The beneficial effects of the above technical scheme are that: this ground wire tool to lock not only can lock ground wire subassembly and ground wire stake or unblock, can also detect ground wire subassembly and ground wire stake and whether cooperate to a lock accuse position, whether detect ground wire subassembly promptly and ground wire stake correct connection.
As a specific technical solution, the sensing mode of the sensing unit and the sensed unit is one of magnetic field sensing, electric field sensing, optical sensing, mechanical contact sensing or electrical contact sensing.
The beneficial effects of the above specific technical scheme are that: various sensing means are provided by which to detect whether the ground wire assembly and ground wire stake are mated to a locked position. The sensing mode is mature sensing technology in the prior art, the application cost is low, the reliability is high, the dual-purpose performance of the local line lock is good, and the application technical range is wide.
As a specific technical scheme, the ground wire lock comprises a lock body provided with the unlocking and locking assembly, the unlocking and locking assembly comprises an unlocking and locking bolt which is controlled to move between an unlocking position and a locking position, when the plug connector is at the locking position, the unlocking and locking bolt and the locked structure are locked or unlocked, a bolt assembly hole communicated with the locking hole is formed in the lock body, and the unlocking and locking bolt is axially and movably arranged in the bolt assembly hole; the locked structure is a clamping groove, and one end of the unlocking bolt is provided with a clamping block clamped with or separated from the clamping groove.
The control mode of the unlocking and locking bolt can be diversified, the locked structure can be locked or unlocked under the direct or indirect control of a driving source, and the driving source can be a mechanical key, a computer key, an electric driving mechanism, an electromagnetic driving mechanism, a pneumatic driving mechanism or other common driving mechanisms. The clamping groove and the clamping block can also be diversified in shape and structure, and only after the clamping block is matched with the clamping groove, interference is formed on the clamping groove along the axial movement of the plug connector, so that the clamping groove cannot be separated from the plug hole.
As a specific technical scheme, the lock body is provided with a key unlocking hole communicated with the bolt assembling hole, and the unlocking assembly further comprises an unlocking rotating shaft driven by an unlocking key; the unlocking and locking rotating shaft is provided with a bolt shifting part, a shifting groove is formed in the unlocking and locking bolt, and the bolt shifting part is matched with the shifting groove and used for shifting the unlocking and locking bolt under the driving of an unlocking key to move between the locking position and the unlocking position.
The beneficial effects of the above specific technical scheme are that: the specific scheme for unlocking through key twisting is provided, and the key-operated unlocking device is simple in structure, practical and reliable.
According to the specific technical scheme, the plug pin shifting part is a semi-cylindrical shifting block, and the width of a shifting groove formed in the middle of the unlocking and locking plug pin is larger than the diameter of the semi-cylindrical shifting block; or the bolt shifting part is a cylindrical shifting column eccentrically arranged at the tail end of the unlocking and locking rotating shaft, the shifting groove formed in the middle of the unlocking and locking bolt is a shifting groove with the width being matched with the diameter of the shifting column, and the cylindrical shifting column is driven to synchronously move with the shifting groove in the process of driving the shifting groove.
In the structure, the pin shifting part can rotate to drive the shifting groove to rotate, so that the lock control part is unlocked.
As a specific technical solution, the unlocking and locking assembly further comprises a return spring; the other end of the unlocking and locking bolt abuts against the tail end of the bolt assembling hole through the reset spring, and the reset spring is used for driving the unlocking and locking bolt to move from the unlocking position to the locking position.
In the unlocking position, the unlocking bolt does not interfere with the motion of the plug connector, the plug connector can move at will in the lock hole position, and in the state, the ground wire lock is in an unlocking state; in the locking position, the unlocking bolt interferes with the motion of the plug connector, the plug connector cannot move at will at the lock hole position, and the ground wire lock is in a locking state.
The beneficial effects of the above specific technical scheme are that: the specific scheme that the key is twisted to unlock and is matched with the reset spring to reset and lock is provided, and the key is simple in structure, practical and reliable.
As a specific technical solution, the sensing unit includes a normally closed three-terminal reed switch, and the sensed unit includes a magnetic element.
The beneficial effects of the above specific technical scheme are that: and by adopting a magnetic induction mode, the corresponding sensing unit and the sensed unit are easy to set, and the cost is low. And the normally closed three-terminal reed switch is a common switch and can be used for switching different circuit states.
As a specific technical solution, the ground line detection assembly further includes a chip, the chip includes an antenna, the antenna is connected to a first radio frequency chip and a second radio frequency chip, each radio frequency chip stores two different code values representing a ground line hanging state and a dismounting state, the sensing unit is electrically connected to the first radio frequency chip and the second radio frequency chip, and the first radio frequency chip or the second radio frequency chip is switched to be electrically connected to the antenna according to whether the sensed unit is sensed.
Because the radio frequency chip (including the first radio frequency chip and the second radio frequency chip) and the antenna can form a passive radio frequency circuit, similar to an electronic tag, a power supply is not needed, and because a ground wire collector of the power supply is needed in the prior art; and the code value stored in the radio frequency chip is a unique code value, can be defined as the identity code of the lockset, and can be defined as the state code of the ground wire hanging connection or dismantling state, so that the radio frequency chip has the advantages of low cost and no maintenance.
As a specific technical solution, the lock body further includes a main housing and a cover plate, a detection assembly cavity is provided in the main housing, the ground wire detection assembly further includes a mounting seat, the mounting seat is fixedly mounted at the inner side of the cover plate and assembled in the detection assembly cavity, the sensing unit is mounted at a position on the mounting seat near the lock control hole, a convex column is arranged at one side of the mounting seat facing the lock control hole, the sensing element is arranged in the convex column, the sensed unit is arranged at the end of the lock control part of the plug connector, the ground wire detection assembly further includes a circuit board, a circuit board assembly groove is provided on the mounting seat, the circuit board is assembled in the circuit board assembly groove, the sensing unit is electrically connected with the circuit board, a code chip antenna assembly groove is further provided on the lock body at the end face where the key is unlocked, the antenna of the chip is arranged in the chip antenna mounting groove, and the first radio frequency chip and the second radio frequency chip of the chip are arranged on the circuit board.
As a specific technical solution, the unlocking assembly further includes a key retention structure, and the key retention structure is used for limiting the unlocking key from being pulled out in the unlocking process.
The key retention structure is a mature technology in the field of locks, and technicians in the field have various ways to realize the key retention structure, and the key retention structure aims to prevent an unlocking key from being pulled out halfway in the unlocking process under the condition of incomplete unlocking operation, so that the incomplete unlocking operation is avoided and hidden troubles exist.
The invention also provides a ground wire anti-misoperation system, which comprises an anti-misoperation host, a computer key and the ground wire lockset; the anti-misoperation host is communicated with the computer key in a wireless or wired connection mode and is used for issuing an operation authority to hang or remove a ground wire of a specified ground wire lock to the computer key, and the computer key is used for operating the ground wire lock on the premise of obtaining the operation authority; the computer key is provided with an unlocking device matched with the ground wire lock, a state reading device and an unlocking device driving mechanism; the unlocking device driving mechanism is used for driving the unlocking device to operate the ground wire lock; the state reading device is used for reading information sensed by the ground wire detection assembly through the sensing unit and transmitting the information back to the error prevention host, and the error prevention host determines that the ground wire lock is hooked with the ground wire according to the situation that the sensing unit senses a feedback signal of the sensed unit and the state reading device stops reading the signal; and in other situations except the above situations, the error prevention host determines that the ground wire lock is not connected with the ground wire.
The anti-misoperation system comprises the ground wire lock, and the hanging of the ground wire on the ground wire pile can be regarded as hanging the ground wire on the ground wire lock or removing the ground wire. The ground wire lock provided by the invention can effectively detect the hanging state and the non-hanging state (namely the removal state) of the ground wire, so that the error preventing system provided by the invention can also effectively detect the hanging state and the non-hanging state of the ground wire. And, with preventing the mistake system cooperation, can be accurately (prevent that the mistake system itself just possesses the function of the operation authority management to the operation object) carry out the operation of hanging on or demolising the ground wire to specific ground wire tool to lock, prevent to connect the wrong or dismantle wrong ground wire, can further prevent the maloperation.
The invention also provides a ground wire hanging and dismounting state detection method, based on the above ground wire anti-misoperation system, a signal sensed by the sensing unit is obtained through a state reading device of the computer key, wherein the situation that the computer key can be pulled out of the ground wire lock and the sensing unit senses the sensed unit is judged as that the ground wire component is hung and locked on the ground wire pile; and judging that the ground wire pile is not connected with the ground wire in other situations except the situations.
The ground wire hanging and dismounting state detection method provided by the invention can effectively detect the hanging state and the non-hanging state of the ground wire.
The invention also provides a method for preventing mistaken hanging of the ground wire, which is based on the ground wire misoperation prevention system, and the ground wire detection assembly is configured into a maintenance-free passive radio frequency detection assembly, and the method for preventing mistaken hanging of the ground wire further comprises the following steps:
s1, a computer key obtains an operation authority for hanging a grounding wire on a specific grounding wire lockset;
s2, inserting a computer key to read the code of the corresponding line lock, and determining whether the line lock is a ground line lock needing to be operated, if so, carrying out the next operation, otherwise, not carrying out the next operation;
s3, unlocking the ground wire lock, and inserting the plug connector of the ground wire assembly into the plug hole of the ground wire pile;
s4, locking the ground wire lock and reading state information of the ground wire hanging connection;
s5, confirming whether the state information of the ground wire hanging connection is read or not, if so, carrying out the next operation, and if not, carrying out the next operation;
and S6, returning the state information of the ground wire hanging connection to the error prevention host, pulling out a computer key, finishing reading the state information, and confirming that the ground wire hanging connection is finished.
As a specific technical solution, in the method for preventing mistaken hooking of a ground wire, the passive radio frequency detection component includes an antenna, the antenna is connected with a first radio frequency chip and a second radio frequency chip, each radio frequency chip stores two different code values representing a ground wire hooking state and a removal state, the sensing unit is electrically connected with the first radio frequency chip and the second radio frequency chip, and the first radio frequency chip or the second radio frequency chip is switched to be electrically connected with the antenna according to whether the sensed unit is sensed; the ground wire hanging state information is a code value stored in the first radio frequency chip.
The method for preventing the mistaken hanging of the ground wire can effectively detect the hanging state of the ground wire.
The invention also provides a method for preventing the earth wire from being disassembled in a leakage way, based on the earth wire anti-misoperation system, the earth wire detection component is configured into a maintenance-free passive radio frequency detection component, and the method for preventing the earth wire from being disassembled in a leakage way further comprises the following steps:
s1', the computer key obtains the operation authority for removing the ground wire of the specific ground wire lock;
s2', inserting a computer key to read the code of the corresponding line lock, and determining whether the line lock is the ground line lock needing to be operated, if so, performing the next operation, otherwise, failing to perform the next operation;
s3', unlocking the ground wire lock, and pulling the plug connector of the ground wire assembly out of the plug hole of the ground wire pile;
s4', locking the ground wire lock and reading the state information of the ground wire removal;
s5'? If so, carrying out the next operation, otherwise, failing to carry out the next operation;
and S6, returning the state information of the ground wire removal to the error-proof host, pulling out the computer key, finishing reading the state information, and confirming that the ground wire removal is finished.
As a specific technical solution, the passive radio frequency detection component includes an antenna, the antenna is connected with a first radio frequency chip and a second radio frequency chip, each radio frequency chip stores two different code values representing a ground wire hanging state and a dismounting state, the sensing unit is electrically connected with the first radio frequency chip and the second radio frequency chip, and the first radio frequency chip or the second radio frequency chip is switched to be electrically connected with the antenna according to whether the sensed unit is sensed; the ground wire dismantling state information is a code value stored in the second radio frequency chip.
The method for preventing the ground wire from being disassembled can effectively detect the disassembling state of the ground wire.
Description of the drawings
Fig. 1 is a schematic perspective view illustrating a ground wire assembly before being matched with a ground wire pile and a ground wire lock on the ground wire pile according to the first embodiment.
Fig. 2 is a schematic view illustrating the ground wire assembly of the first embodiment plugged onto the ground wire pile, and the ground wire lock is partially disassembled and not assembled to the ground wire pile.
Fig. 3 is an exploded schematic view of a ground wire pile, a ground wire assembly and a ground wire lock according to the first embodiment.
Fig. 4a is a schematic cross-sectional view of the unlocking assembly of the earth wire lock according to the first embodiment, which blocks the plug member of the earth wire assembly from being inserted into the lock position.
Fig. 4b is a schematic cross-sectional view of the unlocking assembly in the geoline lock according to the first embodiment, which allows the plug member of the geoline assembly to be inserted into the lock position.
Fig. 4c is a schematic cross-sectional view illustrating the unlocking assembly of the ground wire lock according to the first embodiment for locking the plug-in unit inserted into the lock position.
Fig. 5a is a schematic view of the unlocking and locking assembly of the ground wire lock according to the first embodiment at a locking position relative to the plug insertion hole formed in the ground wire pile.
Fig. 5b is a schematic view of the unlocking assembly of the ground wire lock according to the first embodiment in an unlocking position relative to the plug insertion hole formed in the ground wire pile.
Fig. 6 is an exploded schematic view of a ground line state detection assembly in the ground line lock according to the first embodiment.
Fig. 7 is a schematic front view of a ground line state detection assembly in a ground line lock according to the first embodiment.
Fig. 8 is a schematic sectional view of the ground line state detecting assembly shown in fig. 7 from a-a direction.
Fig. 9a is a schematic view of the state that the unlocking and locking component in the ground wire lock of the first embodiment blocks the plug connector from being inserted into the lock position.
Fig. 9b is a schematic view of the unlocking assembly in the earth wire lock according to the first embodiment in a state where the plug is allowed to be inserted into the lock position.
Fig. 9c is a schematic view of the state that the unlocking and locking component in the ground wire lock according to the first embodiment locks the plug-in unit inserted into the lock position.
Fig. 10 is a schematic view of a computer key used in conjunction with a ground wire lock according to the first embodiment.
Fig. 11 is an exploded view of the unlocking rotary shaft, the unlocking pin and the return spring according to the second embodiment.
Fig. 12 is a schematic cross-sectional view of the second embodiment of the invention after the unlocking rotational shaft, the unlocking pin and the return spring are engaged.
Fig. 13 is a schematic view illustrating the unlocking device of the computer key according to the first or second embodiment of the present invention, which is engaged with the unlocking rotary shaft and the second limit pin when inserted into the key unlocking hole.
Fig. 14 is a schematic view illustrating the unlocking device of the computer key according to the first or second embodiment of the present invention, which is inserted into the key unlocking hole and then rotated by a certain angle to cooperate with the unlocking spindle and the second stopper pin.
Fig. 15 is a schematic perspective view of the assembled ground wire body, plug and connection mechanism according to the third embodiment.
Fig. 16 is an exploded view of the interposer of fig. 15.
Fig. 17 is a schematic cross-sectional view of the portion shown in fig. 15.
Fig. 18 is a schematic cross-sectional view of the ground wire body, the plug and the connection mechanism of the third embodiment after being engaged with the ground wire pile.
Fig. 19 is a block diagram of a ground fault operation prevention system according to the fourth embodiment.
Fig. 20 is a block diagram of another ground line anti-misoperation system according to the fourth embodiment.
Fig. 21 is a schematic view of a control flow of the method for preventing a ground wire from being hooked by a microcomputer according to the fifth embodiment.
Fig. 22 is a schematic view of a control flow of the method for preventing a missed grounding wire detachment in the sixth embodiment applied to a microcomputer anti-error system.
Fig. 23 and fig. 24 are schematic diagrams illustrating connection relationships between two states of a chip according to an embodiment of the present invention.
(specific embodiments) in all cases
For convenience of explanation, the present application defines upper, lower, left, right, front, rear, and the like orientations, and the definitions of the orientations are intended to determine relative positional relationships between the devices, components, and parts in the present application and are not intended to limit actual orientations of the devices, components, and parts in production, use, sale, and the like. The following further describes embodiments of the present invention with reference to the accompanying drawings:
example one
Referring to fig. 1 and 2, the ground wire lock 1 provided in this embodiment is used to lock the ground wire assembly 2 on the ground wire pile 3 or unlock the ground wire assembly from the ground wire pile 3 (after unlocking, the ground wire assembly 2 can be separated from the ground wire pile 3). The ground wire assembly 2 includes a ground wire main body 21, a connector 22, and a connection mechanism 23, wherein the connection mechanism 23 fixedly connects the connector 22 to one end of the ground wire main body 21, and the other end (not shown) of the ground wire main body 21 is used for hanging a power transmission line or electrical equipment. The ground wire assembly 2 is in plug-in fit with the ground wire pile 3 through the plug-in connector 22, so that a power transmission line or electrical equipment or the like to be subjected to grounding operation is grounded.
Referring to fig. 3 and fig. 4a-4c, the ground wire pile 3 includes an assembly base plate 31 and a socket 32 fixedly disposed above the assembly base plate 31, the socket 32 is provided with a front-back through hole 321, the connector 22 is used for being inserted into and fitted with or separated from the socket 321, and a ground path is formed when the two are inserted. Wherein, the inserting hole 321 is a conical hole, and the conical hole is formed by the following method: an assembly through hole is formed in the plug socket 32, a bushing 33 is fixedly installed in the assembly through hole, and a conical hole which is through from front to back is formed in the bushing 33; the plug 22 is generally in the shape of a shaft, one end of which is a lock control portion 221, the other end of which is a wire connection portion 222, and the middle of which is a plug positioning portion, and the plug positioning portion includes a positioning block 223 matched with the shape of the plug hole 321, i.e., a truncated cone-shaped positioning block (since the plug hole 321 is a conical hole in this embodiment, the outer surface of the positioning block in this embodiment is also in the shape of a conical surface).
The bushing 33 has an annular flange 331 protruding from the front end surface of the socket 32, and the annular flange 331 is provided with an external thread; the ground wire assembly 2 further includes a lock nut 24 penetrating the connector, and the lock nut 24 has an end cap 241 allowing the connection portion 222 of the connector 22 to penetrate therethrough and limiting the positioning block 223 in the insertion hole 321.
Referring to fig. 3, the ground main body 21 includes a ground wire 211 and a ground wire connector 212 to which one end of the ground wire 211 is connected; the connection mechanism 23 includes a wire holder 231, a screw 232, a nut 233, a lock washer 234, and a fixing pin 235. The end of the ground wire connector 212 is vertically penetrated by a mounting hole 2121, one end of the connection handle 231 is vertically penetrated by a mounting hole 2311, and the screw 232 is inserted into the mounting hole 2121 and the mounting hole 2311 and locked by the nut 233 and the lock washer 234. The other end of the wire connection handle 231 is opened inward with a connector fixing hole 2312, and the wire connection portion 222 of the connector 22 is fitted into the connector fixing hole 2312 and fixed by a fixing pin 235.
The specific configurations of the ground wire assembly 2 and the ground wire pile 3 and the matching relationship therebetween are described above, wherein it is understood that the insertion hole 321 and the annular flange 331 can also be directly formed on the insertion seat 32; in addition, the insertion hole 321 may be a hole with other shapes and a wide front and a narrow back, for example, the insertion hole may also be a frustum hole, and the positioning block is correspondingly a frustum; or, the plug hole can also be a step hole formed by at least two stages of cylindrical holes, and the positioning block is correspondingly a step cylinder formed by at least two stages of cylinders; or the plug hole is a stepped hole formed by at least two stages of prism holes, and the positioning block is correspondingly a stepped cylinder formed by at least two stages of prisms. The shapes of the plug holes and the positioning blocks can increase the contact area of the plug holes and the positioning blocks, and the good grounding conductivity is ensured. Preferably, the scheme that the inserting hole is a conical hole is adopted; if the spliced eye is the conical surface hole, and the locating piece is the round platform, and the tapering of the two matches each other, exerts axial force to the locating piece when the assembly, and the contact surface of whole conical surface hole and round platform all can the atress for the two cooperates inseparabler on the contact surface when mutually supporting, and the resistance that receives when dismantling is very little, convenient to detach.
The cooperation of the ground wire assembly 2 and the ground wire pile 3 can realize the basic grounding function, but for being safer and more reliable, the ground wire lock 1 is often required to perform unlocking management and control on the ground wire assembly inserted on the ground wire pile 3. The specific way of unlocking and locking control may be various, and not only the wiring portion 222 or the lock nut 24 of the plug 22 may be locked or unlocked at the front side of the socket 32, but also the plug positioning portion of the plug 22 may be locked or unlocked at the plug hole 321.
In the present application, one end of the plug-in unit 22 is specially provided with the lock control portion 221, and the following description is focused on the ground wire lock 1 for controlling the lock control portion 221 of the plug-in unit 22 to be locked or unlocked at the rear side of the plug-in socket 32: referring to fig. 1 and 2, the ground wire lock 1 is fixedly disposed at the rear side of the inserting seat 32 through a screw assembly, and a lock control hole 113 is formed at a position corresponding to the inserting hole 321. The plug member 22 and the insertion hole 321 are inserted into the lock hole 113 (see fig. 4a or 4b) and can be inserted into an error prevention position (see fig. 4 c). The locking portion 221 of the plug 22 is provided with a locked structure, which in this embodiment is a slot 2211. Referring to fig. 3, the unlocking and locking assembly 12 is disposed in the ground wire lock 1, and when the lock control portion 221 of the plug 22 extends from the lock control hole 113 to the anti-misoperation position, the unlocking and locking assembly 12 disposed in the ground wire lock 1 is locked with the locked structure.
The unlocking assembly 12 is controlled by a driving source, such as a mechanical key, a computer key, an electric driving mechanism, an electromagnetic driving mechanism, a pneumatic driving mechanism, or other common driving mechanisms, to lock or unlock the locked structure. The unlatching assembly 12 may be implemented by a variety of different specific configurations, including at least one unlatching latch 122, the unlatching latch 122 being disengaged from the card slot 2211 under direct or indirect control of a drive source; the unlocking bolt 122 is engaged with the card slot 2211 under the direct or indirect control of a driving source, or the unlocking bolt 122 is engaged with the card slot 2211 under the action of an elastic reset piece (such as a reset spring 123). In this embodiment, the locking slot 2211 is an annular slot, and has a simple structure, is convenient to process, and is convenient to cooperate with the unlocking and locking bolt only by moving to the locking and locking position.
The embodiment takes a computer key control mode as an example, and explains the specific structure of the ground wire lock 1:
as shown in fig. 3, the ground wire lock 1 includes a lock body 11, an unlocking assembly 12, a ground wire detecting assembly 13, a code sheet 14 and a dust cover 15. The unlocking assembly 12 specifically includes an unlocking rotation shaft 121, an unlocking latch 122 and a return spring 123. The lock body 11 includes a main housing 111 and a cover plate 112, the front end surface of the main housing 111 is provided with the lock control hole 113 (see fig. 2), the right end surface is provided with a key unlocking hole 114, a key positioning hole 115 and a chip antenna mounting groove 116, the left end surface is provided with a detection assembly cavity (not shown), and the lower end surface is provided with a bolt assembly hole 117 (see fig. 4a-4 c). Wherein the antenna of the chip 14 is mounted in the chip antenna mounting groove 116 and electrically connected to a circuit board 133 (described later). The key unlocking hole 114 and the key positioning hole 115 are respectively disposed at two sides of the chip antenna mounting groove 116, and this distribution is used to match with a conventional computer key 200, see fig. 10, the computer key 200 has an unlocking device 201 (in this embodiment, the unlocking device is an unlocking rod, in other embodiments, depending on the unlocking component of the ground lock, there are a corresponding unlocking device), a positioning rod 202, a reading head 203 (i.e. a status reading device, which is disposed between the unlocking device and the positioning rod, and is used to communicate with the antenna of the chip 14, in this embodiment, the antenna is an induction coil, which will be described in detail below), and an unlocking button 204 (disposed at the side of the computer key, for convenient operation), wherein the application of the computer key is very common in the field of microcomputer, the antenna of the chip is further connected with a radio frequency chip (the radio frequency chip can be disposed in the chip, and the unlocking device 201 can rotate under the control of an unlocking button after unlocking authorization of the microcomputer system, and drives the unlocking rotating shaft 121 matched with the unlocking button to rotate. The dust cover 15 is disposed on the right end surface of the main housing 111 and used for shielding or opening the key unlocking hole 114, the key positioning hole 115, and the chip antenna mounting groove 116. The chip 14 may also be used to feed back the ground attach and detach status (described in more detail below).
The key unlocking hole 114 is perpendicular to and communicates with the plug fitting hole 117, and the plug fitting hole 117 is also perpendicular to and communicates with the lock control hole 113. The unlocking and locking bolt 122 is axially and movably arranged in the bolt assembly hole 117, one end 1221 of the unlocking and locking bolt 122 abuts against the tail end of the bolt assembly hole 117 through the reset spring 123, the other end of the unlocking and locking bolt is provided with a clamping block 1223, and the middle of the unlocking and locking bolt is provided with a shifting groove 1222.
As shown in fig. 3, the unlocking rotating shaft 121 is rotatably disposed in the key unlocking hole 114, and an end portion of the first stopper pin 1251 is located in the key unlocking hole 114 (the unlocking rotating shaft 121 is provided with a ring groove engaged with the end portion of the first stopper pin 1251) for limiting the axial movement of the locking rotating shaft 121 in the key unlocking hole 114.
As shown in fig. 9a to 9c, the unlocking rotating shaft 121 has a key engaging portion 1211 and a pin pulling portion 1212, the key engaging portion 1211 is configured to engage with the unlocking device 201 of the computer key 200 and is controlled to rotate, and the pin pulling portion 1212 engages with the slot 1222 of the unlocking pin 122 and pulls the unlocking pin 122 to move from an unlocking position (where the latching block 1223 does not extend into the position where the pin fitting hole 117 is communicated with the lock hole 113) to a locking position (where the latching block 1223 extends into the position where the pin fitting hole 117 is communicated with the lock hole 113). The return spring 123 is used for controlling the unlocking bolt 122 to move from the unlocking position to the locking position when the poking force of the bolt poking part 1212 is removed.
In this embodiment, the latch pulling portion 1212 is a semi-cylindrical pulling block disposed at the end of the unlocking rotating shaft 121, and the width of the pulling groove 1222 formed in the middle of the unlocking latch 122 is larger than the diameter of the semi-cylindrical pulling block, which requires a return spring 123 for returning.
As shown in fig. 4b, when the unlocking pin 122 is in the unlocking position, the plug 22 can be inserted into the anti-misoperation position in the lock hole 113 (as shown in fig. 4c, the anti-misoperation position means that in this position, the fixture 1223 of the unlocking pin 122 faces the fixture slot 2211 of the plug 22). When the plug 22 moves to the locking position, the block 1223 of the unlocking pin 122 is locked into the slot 2211 of the plug 22 or separated from the slot 2211.
Referring to fig. 3, 6-8, the ground wire detecting assembly 13 includes a mounting seat 131, a reed switch 132, a circuit board 133 and a magnetic element 134. The mounting seat 131 is fixedly installed in the detection assembly assembling cavity of the main housing 111 and located inside the cover plate 112, the reed pipe 132 and the circuit board 133 are electrically connected and together disposed on the mounting seat 131, and the magnetic element 134 is disposed on the lock portion 221 of the plug 22. Wherein, the specific installation position of tongue tube 132 satisfies the following condition: when the plug 22 is in the anti-error position, the reed switch 132 can sense the magnetic field of the magnetic element 134. Specifically, in order to enable the tongue tube 132 to more accurately sense the magnetic field of the magnetic element 134, in the embodiment, a convex column 1311 is disposed on a surface of the mounting seat 131 facing the lock hole 113, the tongue tube 132 is disposed in the convex column 1311, and the magnetic element 134 is embedded in an end portion of the lock portion 221 of the plug 22. In addition, the mounting base 131 is formed with a circuit board mounting groove 1312, and the circuit board 133 is mounted in the circuit board mounting groove 1312, and the circuit board is used for mounting various electronic components and corresponding circuits. The circuit board 133 is provided with a state switching circuit.
The circuit board 133 can obtain a trigger signal of the reed switch 132, so as to realize the state detection of whether the ground wire is inserted into the error-preventing position. The code chip 14 includes an antenna, and a first radio frequency chip and a second radio frequency chip connected to the antenna, each radio frequency chip stores two different code values, the code value stored by the second radio frequency chip can be defined as a code value in a state where a ground wire is not attached (or a ground wire removal state code), and the code value stored by the first radio frequency chip is defined as a code value in a state where a ground wire is attached. When the ground wire is not hooked, the second radio frequency chip is electrically connected with the antenna to form an electronic tag (or a circuit with a function similar to that of the electronic tag), the code reading head 203 of the computer key is provided with a code reading device, and the code value of the second radio frequency chip can be read so as to obtain the current unhooking state (namely, the dismounting state) of the ground wire. After the plug connector of the ground wire is inserted into the plug hole of the grounding pile, the reed switch on the plug connector is triggered, the circuit board 133 or a trigger signal of the reed switch is obtained, the state switching circuit electrically connects the first radio frequency chip with the antenna, and simultaneously disconnects the second radio frequency chip from the antenna. The first radio frequency chip and the antenna form another electronic tag (or a circuit with a function similar to that of the electronic tag), and the code value of the first radio frequency chip can be read through the reading head 203 of the key so as to obtain the current hanging state of the ground wire.
In addition to performing the state detection by using the state switching circuit on the reed switch and the circuit board (for example, using the state acquisition circuit described in the invention patent with the patent number "2019104721420" filed by the applicant in 2019, 5/31 as the state switching circuit of the present application to detect the hanging state of the ground, the entire content of which is incorporated by reference in the present application), the state switching circuit may be implemented by various methods, for example, as shown in fig. 23 and 24, a normally closed three-terminal reed switch 132 '(corresponding to a three-terminal switch) may be used to be electrically connected to the antenna TX and the first and second rf chips, respectively, the first and second rf chips are electrically connected to the antenna after being connected in parallel, and a normally closed three-terminal reed switch 132' (also corresponding to a normally closed three-terminal reed switch) may be used as a switch (corresponding to the state switching circuit) Way) to switch the first rf chip and the second rf chip to be electrically connected to the antenna TX under different magnetic induction states. In a normal state (i.e., when the ground wire is not hooked), the normally closed three-terminal reed switch turns on the second rf chip (as shown in fig. 23), and after the ground wire is hooked, the normally closed three-terminal reed switch 132' turns on the first rf chip (as shown in fig. 24).
Because the wireless radio frequency identification technology is adopted in the process of state acquisition, energy can be provided by a computer key in a wireless induction mode, extra power supplies such as a battery and the like do not need to be arranged on the ground wire lock, and therefore a circuit part of the ground wire lock is free from a plurality of maintenance works.
The working principle of the grounding device provided by the above embodiment is as follows:
when the lock is in a locking state, the fixture 1223 of the unlocking bolt 122 is located at a position where the bolt assembling hole 117 is communicated with the lock control hole 113, and the plug 22 cannot be inserted into the error preventing position (see fig. 4a), and the reed switch 132 cannot sense the magnetic field of the magnetic element 134 (see fig. 9 a);
when the unlocking rotating shaft 121 shifts the unlocking bolt 122 to move upwards to the unlocking position under the control of the unlocking device 201 of the computer key 200, the fixture block 1223 leaves the position where the bolt assembling hole 117 is communicated with the lock control hole 113 (see fig. 4b or fig. 9b), and the plug 22 can be inserted into the anti-misoperation position;
when the plug 22 is inserted into the anti-misoperation position, the acting force of the key is canceled, the unlocking bolt 122 moves downwards to the locking position under the action of the return spring 123, the fixture block 1223 of the unlocking bolt 122 is clamped into the fixture slot 2211 of the lock control part 221 of the plug 22 (see fig. 4c), and at the moment, the reed switch 132 can sense the magnetic field of the magnetic element 134 (see fig. 9 c). Since the operation of the lock requires the operation of a computer key, the computer key can read the code value fed back by the code sheet 14 during the operation process, so as to confirm the hanging state of the ground wire (please refer to the related contents above, and the description is not repeated here).
The specific way of matching the unlocking device 201 with the key unlocking hole 114 and the unlocking rotating shaft 121 is as follows:
referring to fig. 9a and 10, the key engaging portion 1211 of the unlocking rotary shaft 121 has an engaging column 12111 and a driving plate 12112 below the engaging column, and the width of the driving plate 12112 is greater than the diameter of the engaging column 12111. The unlocking means 201 of the key 200 is in the form of a sleeve into which the engagement cylinder 12111 can be inserted. One side of the sleeve wall is provided with a shallow driving groove 2011 along the axial direction, the other side of the sleeve wall is provided with a deep avoiding groove 2012 along the axial direction, and the tail end of the avoiding groove 2012 is provided with an avoiding groove notch 2013 along the circumferential direction of the sleeve wall.
The end of the second limit pin 1252 is located in the key unlocking hole 114 and is used for guiding and limiting the unlocking device 201 when the unlocking device is inserted into the key unlocking hole 114 and is matched with the unlocking rotating shaft 121. Specifically, when the unlocking device 201 of the key 200 is inserted into the key unlocking hole 114, the avoidance groove 2012 can be inserted in alignment with the second stopper pin 1252, and after insertion, the fitting column 12111 is inserted into the sleeve of the unlocking device, the driving plate 12112 is inserted into the driving groove 2011, and the second stopper pin 1252 is simultaneously aligned with the avoidance groove notch 213; next, the unlocking button 204 of the key 200 is pressed down (on the premise that the computer key obtains the operation authority), the unlocking device 201 is driven to rotate by the unlocking button, the driving plate 12112 drives the unlocking rotating shaft 121 to rotate to a certain angle, and at this time, the second limiting pin 1252 is clamped into the avoiding groove gap 2013, so that the unlocking device is limited to move axially relative to the key unlocking hole 114, that is, the key 200 cannot be pulled out of the lock body 11. A process of rotating the unlocking device 201 to the certain angle, that is, an unlocking process; the unlocking device 201 is returned to the reset state, i.e., locked state.
In this embodiment, the matching relationship between the unlocking device 201 and the key unlocking hole 114 and the unlocking rotating shaft 121 and the unlocking process are not shown, and fig. 13 and 14 of the second embodiment below can be referred to in the related drawings.
Example two
The second embodiment is different from the first embodiment in that: the unlocking rotation shaft 121 and the unlocking insertion pin 122 are different in configuration, and the unlocking insertion pin 122 is assembled differently.
Specifically, referring to fig. 11 and 12, the unlocking bolt 122 and the return spring 123 of the second embodiment are installed from the upper end of the lock body 11 and then plugged by a plug (while the unlocking bolt 122 and the return spring 123 of the first embodiment are installed from the lower end of the lock body 11 and then plugged by a plug). This can reduce the opening length of the plug fitting hole 117.
In addition, in the second embodiment, the configuration of the unlocking rotating shaft 121 and the unlocking bolt 122 is improved, which aims to eliminate possible defects of the first embodiment (the defects belong to defects that can exist only under malicious operation, and cannot be completely negated by the innovativeness of the first embodiment), which are described as follows:
in the first embodiment, in the state shown in fig. 9b, there is neither complete locking nor complete unlocking, and due to possible deviation of the sensing range of the reed switch 132, in this position, the reed switch 132 may detect the magnetic element 134 on the plug 22; at this time, if the unlocking means 201 is reset and the key 200 is removed and the plug 22 can be removed, the locked state acquired by the computer key 200 is inaccurate (the plug 22 is not normally inserted, but the locked state acquired by the key 200 is already inserted). In the first embodiment, the disadvantage that the computer key 200 can be pulled out by turning the reset unlocking device 201 back when in the state of fig. 9b does exist, for the following reasons:
in the first embodiment, since the latch pulling portion 1212 of the unlocking rotating shaft 121 is a semi-cylindrical shifting block, the width of the shifting slot 1222 formed in the middle of the unlocking latch 122 is larger than the diameter of the semi-cylindrical shifting block, and the matching space between the two is relatively large, the unlocking latch 122 does not move correspondingly when the reset unlocking device 201 is rotated in the state shown in fig. 9b, and therefore, when the reed switch 132 may detect the magnetic element 134 by mistake, the reset unlocking device 201 can be rotated and the key 200 can be pulled out.
Referring to fig. 11 and 12, in order to solve the above problem, the second embodiment is modified as follows: the bolt shifting portion 1212 of the unlocking rotating shaft 121 is a cylindrical shifting post eccentrically arranged at the end of the unlocking rotating shaft 121, and correspondingly, the shifting groove 1222 formed in the middle of the unlocking bolt 122 is a shifting groove with a width adapted to the diameter of the cylindrical shifting post. In this way, it can be ensured that the rotation of the unlocking rotating shaft 121 and the movement of the unlocking bolt 122 are absolutely synchronous, several bolts 122 can be driven to rotate simultaneously when the unlocking device 201 is returned, and then the unlocking device 201, the key unlocking hole 114 and the corresponding structure of the unlocking rotating shaft 121 (the key retention function, see fig. 13 and 14) in the first embodiment can be matched, so that the computer key can be ensured to be pulled out only when being unlocked or locked, and the locking state of the key acquisition is ensured to be accurate. In the field of power prevention and control, the computer key cannot be pulled out, even if the ground wire can be pulled out (namely, the plug connector 22 is pulled out), the next operation cannot be carried out (the computer key is required to be used in the next operation), and the whole operation process is safe.
It is understood that in the second embodiment, without the return spring 123, the bolt moving portion 1212 can move the unlocking bolt 122 from the unlocking position to the locking position.
EXAMPLE III
In the first embodiment, the insertion hole 321 is matched with the positioning block 223 with a matching shape, so that insertion positioning can be realized and the contact area can be increased, but in practical application, due to processing technology and use loss, a gap may still exist between the positioning block 223 and the insertion hole 321 (the gap may cause poor contact); further, although the lock nut is also electrically conductive, the nut is generally made of a material having high hardness (e.g., stainless steel) and is less electrically conductive than brass (the plug positioning portion is generally made of brass).
In order to further improve the conductive performance, in the third embodiment, the insertion positioning portion of the insertion member 22 in the ground wire assembly 2 is improved on the basis of the first embodiment, which is specifically described as follows:
as shown in fig. 15 to 18, the insertion positioning portion of the third embodiment of the plug-in connector 22 further includes a positioning piece 224, and the positioning piece 224 is an annular piece located at the end of the positioning piece 223 facing the wire connecting portion 222 and protruding out of the outer edge of the end of the positioning piece 223. The lock nut 24 compresses the positioning piece 224 between the end cap of the lock nut 24 and the annular flange of the bushing 33, and simultaneously limits the positioning piece 223 in the plug hole.
This embodiment is through add a spacer 224 on plug connector location portion, adopts the brass to make, and spacer 224 can be with the preceding terminal surface contact of spliced eye towards a side of spliced eye, guarantees to electrically conduct well, can avoid between locating piece 223 and the spliced eye 321 because the not enough contact surface that leads to of degree of cooperation produces the clearance, leads to contact failure's condition to take place.
In the first embodiment, the lock portion 221 of the plug 22 is integrally formed at one end of the plug positioning portion. Since the ground wire assembly 2 is frequently taken in, taken out, and carried, and the lock control portion 221 is frequently pulled out and inserted, it is easily damaged. In this embodiment, the lock control portion 221 is designed as a detachable structure, which is specifically as follows:
the lock control part 221 is an independent component, the end of the lock control part 221 is provided with an assembling column 2211, the front end of the plug connector 22 at the plug positioning part is provided with an installing hole 229 inwards, and the assembling column 2211 is detachably assembled in the installing hole 229. Specifically, a clamping hole 2291 is formed on a side wall of the mounting hole 229, a fixing pin hole 22111 is formed inward on a side edge of the assembly column 2211, a pressing spring 228 and a pressing pin 227 are arranged in the fixing pin hole 22111, and the pressing pin 227 has a clamping portion capable of being embedded into the clamping hole 2291 and a stopping edge stopping at an inner wall of the clamping hole 2291. When the lock control unit 221 is detached, the pressing pin 227 is pressed downward to be disengaged from the engaging hole 2291, and the detachment is possible.
In this embodiment, when the lock control portion 221 is damaged and deformed during use, it is easy to replace (otherwise, the entire plug connector needs to be replaced), the maintenance cost is low, meanwhile, the lock control portion may be made of stainless steel (with high hardness, but with a relatively high price and a relatively low conductivity, which are not as good as brass), and the plug positioning portion may be made of brass (with low hardness, but with a relatively low price and a relatively low price, which is as good as brass), so that each portion is made of the most suitable material, and the cost is the lowest.
Example four
As shown in fig. 19, the present embodiment provides a ground line anti-misoperation system, which includes an anti-misoperation host, a computer key and the ground line lock described in the above embodiments; the anti-misoperation host is communicated with the computer key in a wireless (or wired) connection mode and is used for issuing an operation authority for hanging or removing a ground wire to a designated ground wire lock to the computer key, and the computer key is used for operating the ground wire lock on the premise of obtaining the operation authority; the computer key is provided with an unlocking and locking device matched with the ground wire lockset; the unlocking device driving mechanism is used for driving the unlocking device to unlock the ground wire lockset; the state reading device (e.g. the reader 203) is used for reading information sensed by the ground wire detection assembly (including an antenna communicated with the reader 203 and a radio frequency chip electrically connected with the antenna) through the sensing unit (e.g. the reed switch 132) and transmitting the information back to the anti-misoperation host, and the anti-misoperation host or the computer key determines that the ground wire lock is hooked with the ground wire according to the situation that the state reading device stops reading signals after the sensing unit senses a feedback signal of the sensed unit (e.g. the magnetic element 134); in other situations except the above situations, the error prevention host or the computer key determines that the ground wire lock is not hooked with the ground wire.
The anti-misoperation system comprises the ground wire lock, and the ground wire hanging on the ground wire pile can be regarded as hanging the ground wire on the ground wire lock or removing the ground wire. The ground wire lock provided by the invention can effectively detect the hanging state and the non-hanging state (namely the removal state) of the ground wire, so that the error preventing system provided by the invention can also effectively detect the hanging state and the non-hanging state of the ground wire. And, with preventing the mistake system cooperation, can be accurately (prevent that the mistake system itself just possesses the function of the operation authority management to the operation object) carry out the operation of hanging on or demolising the ground wire to specific ground wire tool to lock, prevent to connect the wrong or dismantle wrong ground wire, can further prevent the maloperation.
Specifically, as shown in fig. 20, in another embodiment, the mobile terminal may be used as a communication relay to realize communication between the computer key and the anti-misoperation host. The computer key is connected with the mobile terminal through the Bluetooth module, and the mobile terminal is connected with the anti-misoperation host through a mobile network (such as a 3G, 4G and 5G communication network).
On the basis of the fourth embodiment, the embodiment of the invention further provides a ground wire hanging and detaching state detection method, based on the above ground wire anti-misoperation system, a state reading device (a reading head 203) of the computer key is used for acquiring a signal sensed by the sensing unit (a reed pipe 132), wherein the condition that the computer key can be pulled out of the ground wire lock and the sensing unit senses the sensed unit is judged to be that a ground wire component is hung and locked on a ground wire pile; and in other situations except the above situations, the error prevention host determines that the ground wire pile is not hooked with the ground wire.
EXAMPLE five
With reference to fig. 21 and the above-described embodiments, this embodiment provides a method for preventing mistaken hooking of a ground wire, where based on the ground wire mistaken-prevention system described in the above embodiments, the ground wire detection component is configured as a maintenance-free passive radio frequency detection component, and the method further includes the following steps:
s1, a computer key obtains an operation authority for hanging a grounding wire on a specific grounding wire lockset;
s2, inserting a computer key to read the code of the corresponding line lock, and determining whether the line lock is a ground line lock needing to be operated, if so, carrying out the next operation, otherwise, not carrying out the next operation;
s3, unlocking the ground wire lock, and inserting the plug connector of the ground wire assembly into the plug hole of the ground wire pile;
s4, locking the ground wire lock and reading state information of the ground wire hanging connection;
s5, confirming whether hanging state information of the ground wire is read or not, if so, carrying out the next operation, and if not, failing to carry out the next operation;
and S6, returning the state information of the ground wire hanging connection to the error prevention host, pulling out a computer key, finishing reading the state information, and confirming that the ground wire hanging connection is finished.
In the steps from S2 to S5, the computer key is always inserted into the ground lock for operation, and when the unlocking device of the computer key is rotated, the computer key must be reset to be removed. If the ground wire lock described in the second embodiment is adopted, the computer key can be pulled out only after the plug-in unit 22 of the ground wire assembly is completely inserted into the plug-in hole 321 of the ground wire pile and is effectively locked. The status reading device (the reader head 203) of the computer key can always read the status information (for example, the code value of the code sheet 14 is read and the code value of the confirmation code sheet is changed) fed back by the ground line detection component during the whole operation process, so as to confirm that the plug-in unit 22 is inserted into the plug-in hole 321. And the final hanging state of the ground wire can be determined only after the computer key is pulled out (namely, the code reading is stopped), and if the computer key reads the state information all the time, the ground wire can not be considered to be completely hung. Therefore, the method for preventing the mistaken hanging of the ground wire can effectively collect the hanging state of the ground wire and ensure the real and effective hanging of the ground wire.
Specifically, in this embodiment, the passive radio frequency detection component includes an antenna, the antenna is connected to a first radio frequency chip and a second radio frequency chip, each radio frequency chip stores two different code values representing a ground wire hanging state and a dismounting state, the sensing unit is electrically connected to the first radio frequency chip and the second radio frequency chip, and the first radio frequency chip or the second radio frequency chip is switched to be electrically connected to the antenna according to whether the sensed unit is sensed; the ground wire hanging state information is a code value stored in the first radio frequency chip.
The method provided by this embodiment can be applied to a microcomputer anti-error system, as shown in fig. 21, in the microcomputer anti-error system, the anti-error host issues a bill (for example, issues an operation bill) and authorizes the computer key to perform an operation, that is, the computer key is authorized to perform an unlocking operation according to the operation steps included in the bill, if an operation of hooking a ground wire is involved in the process of performing the operation, the computer key obtains an operation authority of hooking the ground wire to a specific ground wire lock, the ground wire hooking operation needs to be performed according to the steps from S1 to S6, after the completion of the hooking of the ground wire can be confirmed, then other operations on the bill are continuously performed, if an operation involving the ground wire hooking is encountered again, the operation of hooking the ground wire is performed again according to the steps from S1 to S6, thus, the operation of hooking the ground wire can be managed and recorded by the host, and the successful hooking of the ground wire can be ensured, the condition of missing hanging is avoided, and each ground wire lockset is provided with an identity code, so that the condition that the ground wire is hung on a wrong ground wire pile can be prevented.
EXAMPLE six
With reference to fig. 22 and the above-described embodiments, this embodiment further provides a method for preventing a ground wire from being detached, where based on the ground wire lock described in the above embodiments, the ground wire detection assembly is configured as a maintenance-free passive radio frequency detection assembly, and the method further includes the following steps:
s1', the computer key obtains the operation authority for removing the ground wire of the specific ground wire lock;
s2', inserting a computer key to read the code of the corresponding line lock, and determining whether the line lock is the ground line lock needing to be operated, if so, performing the next operation, otherwise, failing to perform the next operation;
s3', unlocking the ground wire lock, and pulling the plug connector of the ground wire assembly out of the plug hole of the ground wire pile;
s4', locking the ground wire lock and reading the state information of the ground wire removal;
s5'? If so, carrying out the next operation, otherwise, failing to carry out the next operation;
and S6, returning the state information of the ground wire hanging connection to the error prevention host, pulling out the computer key, finishing reading the state information, and confirming that the ground wire is completely removed.
In the steps from S2 'to S5', the computer key is always inserted into the ground wire lock for operation, and when the unlocking device of the computer key is rotated, it must be reset to be pulled out, and if the ground wire lock described in the second embodiment is adopted, the computer key can be pulled out only by completely pulling the plug 22 of the ground wire assembly out of the plug hole 321 of the ground wire pile and locking the ground wire lock (i.e., resetting the ground wire lock). The reading head 203 of the computer key can always read the status information (such as the code value of the code sheet 14 and the code value of the confirmation code sheet) fed back by the ground wire detection component in the whole operation process, thereby confirming that the plug-in unit 22 is pulled out of the plug-in hole 321. And the final removal state of the ground wire can be determined only after the computer key is pulled out (namely, the code reading is stopped), and if the computer key is used for reading the state information (code reading) all the time, the ground wire cannot be considered to be removed completely. Therefore, the method for preventing the mistaken hanging of the ground wire can effectively collect the dismounting state of the ground wire and ensure that the ground wire is really and effectively dismounted.
Specifically, as in the previous embodiment, in this embodiment, the passive radio frequency detection component includes an antenna, the antenna is connected to a first radio frequency chip and a second radio frequency chip, each radio frequency chip stores two different code values representing a ground wire hanging state and a removal state, the sensing unit is electrically connected to the first radio frequency chip and the second radio frequency chip, and the first radio frequency chip or the second radio frequency chip is switched to be electrically connected to the antenna according to whether the sensed unit is sensed; the ground wire dismantling state information is a code value stored in the second radio frequency chip.
The method provided by this embodiment can be applied to a microcomputer anti-misoperation system, as shown in fig. 22, in the microcomputer anti-misoperation system, the anti-misoperation host issues a bill (for example, issues an operation bill) and authorizes the computer key to perform an operation, that is, the computer key is authorized to perform an unlocking operation according to the operation steps included in the bill, if the operation is related to a ground wire removal operation in the process of performing the operation, the computer key obtains the operation authority of removing the ground wire, the ground wire removal operation needs to be performed according to the steps from S1 'to S6', after the completion, the completion of the ground wire removal can be confirmed, then other operations on the bill are continuously performed, if the operation related to the ground wire removal is encountered again, the operation of removing the ground wire is performed again according to the steps from S1 'to S6', and thus, the operations of removing the ground wire can be managed and recorded by the microcomputer anti-misoperation system, and the successful ground wire removal can be ensured, the condition that the ground wires are missed to be disassembled is avoided, and each ground wire lockset is provided with an identity code, so that the condition that the ground wires are mistakenly disassembled can be prevented.
The above embodiments are merely for full disclosure and not for limitation, and any replacement of equivalent technical features, which can be obtained without inventive work based on the gist of the present invention, should be construed as the scope of the present disclosure.

Claims (15)

1. A ground wire lock is used for locking a ground wire assembly on a ground wire pile or unlocking the ground wire assembly from the ground wire pile, the ground wire assembly comprises a plug connector, and the ground wire pile is provided with a plug hole; the ground wire lock is fixedly arranged on the ground wire pile, and a lock control hole is formed in the position, corresponding to the insertion hole, of the ground wire lock; the plug connector is provided with a lock control part which extends into a lock control position through the plug hole and the lock control hole, and a locked structure is arranged on the lock control part; be equipped with on the tool to lock be used for right the unblock subassembly that locks is carried out by the lock structure, the ground wire tool to lock still includes ground wire detection subassembly, and this ground wire detection subassembly includes a sensing unit and one by the sensing unit, by the sensing unit set up in lock portion is last, the sensing unit set up in on the lock body and mounted position satisfy following condition: when the plug connector is located at the lock control position, the sensing unit can sense the sensed unit; the method is characterized in that: the ground wire lockset comprises a lock body provided with the unlocking and locking assembly, the unlocking and locking assembly comprises an unlocking and locking bolt which is controlled to move between an unlocking position and a locking position, a bolt assembly hole communicated with the lock control hole is formed in the lock body, and the unlocking and locking bolt is axially and movably arranged in the bolt assembly hole; the lock body is provided with a key unlocking hole communicated with the bolt assembling hole, and the unlocking assembly also comprises an unlocking rotating shaft driven by an unlocking key; the unlocking and locking rotating shaft is provided with a bolt shifting part, a shifting groove is formed in the unlocking and locking bolt, and the bolt shifting part is matched with the shifting groove and used for shifting the unlocking and locking bolt to move between the locking position and the unlocking position under the driving of an unlocking key; the lock body still includes main casing body and apron, detection component assembly chamber has been seted up in the main casing body, ground wire detection subassembly still includes the mount pad, this mount pad fixed mounting in the apron inboard and assemble in detection component assembly intracavity, sensing unit install in be close to on the mount pad the position in lock accuse hole, the mount pad orientation the one side in lock accuse hole sets up a projection, sensing unit sets up in this projection, be located by sensing unit the tip of the lock accuse portion of plug connector.
2. The ground wire lock of claim 1, wherein the sensing means of the sensing unit and the sensed unit is one of magnetic field sensing, electric field sensing, optical sensing, mechanical contact sensing or electrical contact sensing.
3. The ground wire lock according to claim 1, wherein said unlocking bolt locks or unlocks with said locked structure when said plug is in said lock position; the locked structure is a clamping groove, and one end of the unlocking bolt is provided with a clamping block clamped with or separated from the clamping groove.
4. The ground wire lock according to claim 1, wherein the bolt toggle part is a semi-cylindrical toggle block, and the width of a toggle groove formed in the middle of the unlocking and locking bolt is larger than the diameter of the semi-cylindrical toggle block; or the bolt shifting part is a cylindrical shifting column eccentrically arranged at the tail end of the unlocking and locking rotating shaft, the shifting groove formed in the middle of the unlocking and locking bolt is a shifting groove with the width being matched with the diameter of the shifting column, and the cylindrical shifting column is driven to synchronously move with the shifting groove in the process of driving the shifting groove.
5. The ground wire lock of claim 1, wherein the unlatching assembly further comprises a return spring; the other end of the unlocking and locking bolt abuts against the tail end of the bolt assembling hole through the reset spring, and the reset spring is used for driving the unlocking and locking bolt to move from the unlocking position to the locking position.
6. The ground wire lock of claim 1, wherein the sensing unit comprises a normally closed three-terminal reed switch and the sensed unit comprises a magnetic element.
7. The ground wire lock of claim 1, wherein the ground wire detection assembly further comprises a chip, the chip comprises an antenna, the antenna is connected with a first radio frequency chip and a second radio frequency chip, each radio frequency chip stores two different code values representing a ground wire hanging state and a dismounting state, the sensing unit is electrically connected with the first radio frequency chip and the second radio frequency chip, and the first radio frequency chip or the second radio frequency chip is switched to be electrically connected with the antenna according to whether the sensed unit is sensed.
8. The ground wire lock of claim 1, wherein the ground wire detecting assembly further comprises a circuit board, the mounting seat has a circuit board mounting groove, the circuit board is mounted in the circuit board mounting groove, the sensing unit is electrically connected to the circuit board, the lock body has a chip antenna mounting groove on an end surface thereof, the end surface of the lock body has the key unlocking hole, the chip antenna is mounted in the chip antenna mounting groove, and the first rf chip and the second rf chip of the chip are disposed on the circuit board.
9. The ground wire lock according to any of claims 1 to 8, characterized in that: the unlocking assembly further comprises a key retention structure, and the key retention structure is used for limiting the unlocking key to be pulled out in the unlocking process.
10. A ground wire error prevention system, which is characterized by comprising an error prevention host, a computer key and a ground wire lock according to any one of claims 1 to 9; the anti-misoperation host is communicated with the computer key in a wireless or wired connection mode and is used for issuing an operation authority for hanging or removing a ground wire to an appointed ground wire lock to the computer key, and the computer key is used for operating the ground wire lock on the premise of obtaining the operation authority; the computer key is provided with an unlocking and locking device matched with the ground wire lock, a state reading device and an unlocking device driving mechanism; the unlocking device driving mechanism is used for driving the unlocking device to unlock the ground wire lockset; the state reading device is used for reading information sensed by the ground wire detection assembly through the sensing unit and returning the information to the anti-misoperation host, and the anti-misoperation host or the computer key determines that the ground wire lock is hooked with the ground wire according to the condition that the state reading device stops reading signals after the sensing unit senses the feedback signals of the sensed unit; in other situations except the above situations, the error prevention host or the computer key determines that the ground wire lock is not hooked with the ground wire.
11. A ground wire hanging and detaching state detection method, characterized in that, based on the ground wire anti-misoperation system of claim 10, the state reading device of the computer key is used for acquiring the signal sensed by the sensing unit, wherein, the situation that the computer key can be pulled out of the ground wire lock and the sensing unit senses the sensed unit is judged as that the ground wire component is hung and locked on the ground wire pile; and in other situations except the above situations, the error prevention host determines that the ground wire pile is not hooked with the ground wire.
12. A method for preventing mistaken hanging of a ground wire, based on the ground wire mistaken-prevention system of claim 10, wherein the ground wire detection component is configured as a maintenance-free passive radio frequency detection component, and the method for preventing mistaken hanging of the ground wire further comprises the following steps:
s1, a computer key obtains an operation authority for hanging a grounding wire on a specific grounding wire lockset;
s2, inserting a computer key to read the code of the corresponding line lock, and determining whether the line lock is a ground line lock needing to be operated, if so, carrying out the next operation, otherwise, not carrying out the next operation;
s3, unlocking the ground wire lock, and inserting the plug connector of the ground wire assembly into the plug hole of the ground wire pile;
s4, locking the ground wire lock and reading state information of the ground wire hanging connection;
s5, confirming whether hanging state information of the ground wire is read or not, if so, carrying out the next operation, and if not, failing to carry out the next operation;
and S6, returning the state information of the ground wire hanging connection to the error prevention host, pulling out a computer key, finishing reading the state information, and confirming that the ground wire hanging connection is finished.
13. The method for preventing a ground wire from being hooked mistakenly according to claim 12, wherein the passive radio frequency detection assembly comprises an antenna, a first radio frequency chip and a second radio frequency chip are connected to the antenna, each radio frequency chip stores two different code values representing a ground wire hooking state and a dismounting state respectively, the sensing unit is electrically connected with the first radio frequency chip and the second radio frequency chip, and the first radio frequency chip or the second radio frequency chip is switched to be electrically connected with the antenna according to whether the sensed unit is sensed or not; the ground wire hanging state information is a code value stored in the first radio frequency chip.
14. A method of preventing missed grounding, based on the grounding lockset of claim 1, wherein the grounding detection assembly is configured as a maintenance-free passive rf detection assembly, the method further comprising the steps of:
s1', the computer key obtains the operation authority for removing the ground wire of the specific ground wire lock;
s2', inserting a computer key to read the code of the corresponding line lock, and determining whether the line lock is the ground line lock needing to be operated, if so, performing the next operation, otherwise, failing to perform the next operation;
s3', unlocking the ground wire lock, and pulling the plug connector of the ground wire assembly out of the plug hole of the ground wire pile;
s4', locking the ground wire lock and reading the state information of the ground wire removal;
s5'? If so, carrying out the next operation, otherwise, failing to carry out the next operation;
and S6, returning the state information of the ground wire removal to the error-proof host, pulling out the computer key, finishing reading the state information, and confirming that the ground wire removal is finished.
15. The method for preventing leakage of ground wires according to claim 14, wherein the passive rf detection assembly comprises an antenna, the antenna is connected with a first rf chip and a second rf chip, each rf chip stores two different code values representing a ground wire hanging state and a dismounting state, the sensing unit is electrically connected with the first rf chip and the second rf chip, and the first rf chip or the second rf chip is switched to be electrically connected with the antenna according to whether the sensed unit is sensed; the ground wire dismantling state information is a code value stored in the second radio frequency chip.
CN201910701925.1A 2019-07-31 2019-07-31 Ground wire lockset, ground wire anti-misoperation system and related method Active CN110409929B (en)

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110911859B (en) * 2019-12-10 2021-05-25 珠海优特电力科技股份有限公司 Ground wire pile
CN111541107B (en) * 2020-05-08 2021-10-22 珠海优特电力科技股份有限公司 Ground wire pile lock
CN113593089B (en) * 2021-07-29 2023-05-16 珠海优特电力科技股份有限公司 Grounding wire hooking identity authentication method and system
CN114325476A (en) * 2021-12-30 2022-04-12 贵州电网有限责任公司 Ground wire state detection device and detection method
CN115450497A (en) * 2022-08-16 2022-12-09 珠海优特电力科技股份有限公司 Ground wire pile lock and ground wire lockset
CN117276922B (en) * 2023-09-20 2024-04-12 北京奇正数元科技股份有限公司 Ground wire positioning device with good stability

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104037580A (en) * 2013-03-06 2014-09-10 珠海优特电力科技股份有限公司 Misoperation-preventing intelligent ground wire lock, misoperation-preventing control system and control method
CN104426086A (en) * 2013-09-06 2015-03-18 广州市地下铁道总公司 Direct-current electricity-checking grounding equipment and working method thereof
CN106992403A (en) * 2017-04-19 2017-07-28 珠海优特电力科技股份有限公司 Ground stud
CN206401555U (en) * 2016-12-27 2017-08-11 珠海优特电力科技股份有限公司 Ground wire locking device
CN108533826A (en) * 2018-04-11 2018-09-14 长园共创电力安全技术股份有限公司 Valve lockset and valve lock control system
CN208970838U (en) * 2018-08-31 2019-06-11 宁波诠航机械科技有限公司 A kind of charging structure

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102931534A (en) * 2011-08-12 2013-02-13 许宏伟 Locking control device for automobile charging electric lock
CN104932024A (en) * 2015-05-26 2015-09-23 国网甘肃省电力公司天水供电公司 Intelligent ground wire detection device
GB2543781B (en) * 2015-10-27 2020-01-22 Paxton Access Ltd Access control device
DE102016122890A1 (en) * 2016-11-28 2018-05-30 Endress+Hauser Conducta Gmbh+Co. Kg Sensor arrangement and connection element for use in process automation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104037580A (en) * 2013-03-06 2014-09-10 珠海优特电力科技股份有限公司 Misoperation-preventing intelligent ground wire lock, misoperation-preventing control system and control method
CN104426086A (en) * 2013-09-06 2015-03-18 广州市地下铁道总公司 Direct-current electricity-checking grounding equipment and working method thereof
CN206401555U (en) * 2016-12-27 2017-08-11 珠海优特电力科技股份有限公司 Ground wire locking device
CN106992403A (en) * 2017-04-19 2017-07-28 珠海优特电力科技股份有限公司 Ground stud
CN108533826A (en) * 2018-04-11 2018-09-14 长园共创电力安全技术股份有限公司 Valve lockset and valve lock control system
CN208970838U (en) * 2018-08-31 2019-06-11 宁波诠航机械科技有限公司 A kind of charging structure

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