CN2133965Y - Safety blocking device for preventing undesired approach to electrical appliances - Google Patents

Safety blocking device for preventing undesired approach to electrical appliances Download PDF

Info

Publication number
CN2133965Y
CN2133965Y CN 92235592 CN92235592U CN2133965Y CN 2133965 Y CN2133965 Y CN 2133965Y CN 92235592 CN92235592 CN 92235592 CN 92235592 U CN92235592 U CN 92235592U CN 2133965 Y CN2133965 Y CN 2133965Y
Authority
CN
China
Prior art keywords
solenoid
relay
interlock system
electronic control
safety interlock
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 92235592
Other languages
Chinese (zh)
Inventor
李广进
Original Assignee
李广进
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 李广进 filed Critical 李广进
Priority to CN 92235592 priority Critical patent/CN2133965Y/en
Application granted granted Critical
Publication of CN2133965Y publication Critical patent/CN2133965Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model belongs to a safety blocking device for preventing undesired approach to electrical appliances, comprising an electronic control circuit and a mechanical blocking mechanism. The safety blocking device for preventing undesired approach to electrical appliances is characterized in that the electronic control circuit is composed of a detecting amplifying circuit, a driving circuit, a relay, an acoustic-optic displayer, and a magnet coil; the mechanical blocking mechanism is composed of a cylindrical pin, a connecting rod connected with the cylindrical pin, a draw rod, and a lock bolt matched with the draw rod. The utility model has the advantages of simple structure, convenient operation, high safety, energy saving, etc.

Description

Safety blocking device for preventing undesired approach to electrical appliances
The utility model belongs to anti-error nearly (advancing) safety interlock system of electric equipment, specifically also do not disconnect whole power supplys (as distribution power transformation device high-pressure side three phase mains at various electric equipments, between the charged isolation of power plant or distribution substation) situation under, be used to prevent personnel mistake nearly (advancing), false touch and cause the safety device of electrification electric shock injures and deaths.
Many electric equipments of China's electric power and other industrial department are not owing to possess the standard of this materialization Safety Design at present, often some Maintenance and Repair or other personnel are under the situation that equipment is not cut off the electricity supply fully, nearly (advancing) the electric shock injures and deaths of mistake are brought heavy losses to people's lives and properties.
The purpose of this utility model is to have designed under a kind of situation that does not disconnect whole power supplys at various electric equipments, prevents nearly (advancing) the charged electric equipment scene of personnel's mistake, stops the safety interlock system that the serious accident of personnel's electrification, electric shock injures and deaths takes place.
The door that the fence enclosure wall that anti-error nearly (advancing) safety interlock system of electric equipment is installed on the security protection of various electric equipments is imported and exported is gone up as safety lock, when electric equipment has electricity, this safety interlock system can send the acousto-optic warning signal, personnel's lock of not opening, can't enter or close electric equipment, avoid the error shock accident to take place.
This safety interlock system partly is made up of electronic control part and mechanical latching, the function implementation procedure of electronic control part wherein: detecting head is installed on (near the binding post as transformer high-voltage side A, B, C three-phase) near the power supply of various electric equipments, detecting head is delivered to amplifying circuit with the electric field signal that detects, after amplifying, deliver to drive circuit, driver is finished the driving function on the one hand, play logic discrimination function simultaneously, make relay produce corresponding action.Under the situation that has electric field to exist, detect amplifying unit output signal is arranged, at this moment generation sound, light caution, solenoid does not have electric energy to be passed through, do not produce adhesive action, and mechanical lock is blocking, personnel's lock of not opening, can not miss nearly (advancing) electric equipment, avoid electrification, electric shock accidents to take place; When detecting head did not detect electric field signal, driver made relay produce action, and solenoid has electric energy energy mistake, produces the adhesive action, and at this moment mechanical lock is opening, can open, and acousto-optic warning does not meanwhile take place.
The utlity model has following advantage:
1, safe and reliable.Because the normal opened contact of the solenoid S cut-in relay of electronic control circuit, and cooperate with triode GB1, GB2, make solenoid break down breakdown as BG1, BG2 in any part of electronic circuit, or can not move under the situation of IC1 or shielding conductor damage, this just guarantees that mechanical latching partly is in blocking, do not open, thereby avoid personnel's mistake nearly (advancing), the electric shock casualty accident takes place.
2, energy savings, easy to use.Power supply and electronic circuit and disconnect just when the operating personnel need overhaul equipment, are being unblanked in a flash at ordinary times, just with power connection, after lock is opened power supply are disconnected, so not power consumption at ordinary times;
3, applied widely, this safety interlock system is suitable for multiple electric equipment, is applicable to any area and any climatic environment.
Description of drawings:
Fig. 1 is anti-error nearly (advancing) the safety interlock system theory diagram of electric equipment;
Fig. 2 is this device electronic control circuit;
Fig. 3 is this device electronic control circuit;
Fig. 4 is this device for mechanical blocking mechanism (A);
Fig. 5 is this device for mechanical blocking mechanism (B).
Number in the figure: 1, solenoid; 2, straight pin; 3,5,6, pin; 4, connecting rod; 7, pull bar; 8,9, fixed bearing; 10, lock bolt; 11, block.
The electronic control circuit of this safety interlock system has two kinds of embodiments, wherein a kind of embodiment as shown in Figure 2, its detection amplifying circuit is made of shielded conductor (probe) and amplifier ic chip, diode D, resistance R 1 and capacitor C, and drive circuit is by triode BG1, BG2 and be attached thereto the resistance R 2, the R3 that connect and form.Execution and display part are by relay J and solenoid S, and sound and light display (loudspeaker and light-emitting diode) constitutes.When the detection amplifying circuit has output signal, BG1, BG2 conducting, relay J does not produce action, and promptly J1 closure, J2 disconnect, and send acousto-optic and show that solenoid S does not have electric energy to pass through, and do not produce the adhesive action, and at this moment mechanical lock is blocking; When detecting the amplifying circuit non-output signal, BG1, not conducting of BG2, relay does not produce action, and normally closed contact J1 disconnects, and normal opened contact J2 is closed to be connected, and acousto-optic does not show that solenoid has electric energy to pass through, and mechanical lock is opening, and lock can be opened.
The another embodiment of electronic control circuit: as shown in Figure 3, its detection amplifying circuit is made of shielded conductor, amplifier ic chip 1, diode D1, D2, resistance R 1, R2, R3 and capacitor C 1, C2, drive circuit is made up of IC2, triode BG1, BG2, diode D3, resistance R 4, R5, R6, R7, R8 and sound and light display, and ic chip 3, solenoid S constitutes.When the detection amplifying circuit had the signal of telecommunication, drive circuit BG1 conducting had acousto-optic to show, and because the conducting IC3 no-output of BG2, S then is failure to actuate; Otherwise when the detection amplifying circuit did not have the signal of telecommunication, IC2 was failure to actuate, and acousto-optic does not take place show, because producing by IC3 of BG2 moved, made solenoid S have electric energy to pass through, and produced the adhesive action, and mechanical latching machinery can be opened.
Mechanical lock, two kinds of versions are arranged, wherein a kind of (A) by straight pin 2, the connecting rod 4 that is connected with straight pin, the pull bar 7 that is connected with connecting rod 4, and the lock bolt 10 that is used with it constitutes, and a taper round platform block is arranged in the middle of the lock bolt 10, this blocking mechanism is fixed on the frame with pin 5, after solenoid 1 energising the adhesive action takes place, straight pin 2 falls into the solenoid jack, and straight pin 2 is by connecting rod 4, drive on the pull bar 7 and carry, lock bolt 10 can be moved to the left lock is opened; If solenoid does not have electric energy and passes through, under spring force and pull bar action of gravity, pull bar 7 falls to being stuck on the taper round platform of lock bolt 10 automatically, and lock bolt 10 enters in the link stopper 11 that is positioned on the door, and blocking mechanism is lived door lock, does not open, and prevents personnel's mistake nearly (advancing).
Another kind of mechanical lock (B) is made of pull bar 7 and lock bolt, and pull bar 7 has the function of straight pin 2 concurrently, after solenoid 1 energising, the adhesive action takes place, and pull bar 7 is mentioned, and lock bolt 10 can be moved to the left, and lock is opened; When no electric energy in the solenoid passes through, do not produce the adhesive action, pull bar 7 falls under action of gravity automatically, is stuck on the taper round platform of lock bolt 10, and blocking mechanism is lived door lock, does not open, and can prevent personnel's mistake nearly (advancing) equally.

Claims (5)

1, the utility model belongs to anti-error nearly (advancing) safety interlock system of electric equipment, it is made up of electronic control circuit part and mechanical lock, it is characterized in that electronic control circuit constitutes by detecting amplifying circuit, drive circuit and relay, acousto-optic warning device, solenoid, mechanical lock is by straight pin 2 and be attached thereto connecting rod 4, the pull bar 7 that connects and the lock bolt 10 that is used with it constitutes.
2, according to the described safety interlock system of claim 1, the detection amplifying circuit that it is characterized in that its electronic control circuit is made of shielded conductor, amplifier ic chip, diode D and resistance R 1, capacitor C, or is made of shielded conductor, amplifier ic chip 1, diode D1, D2, resistance R 1, R2, R3 and capacitor C 1, C2.
3, according to the described safety interlock system of claim 1, the drive circuit that it is characterized in that it is by triode BG1, BG2 and be attached thereto resistance R 2, the R3 that connects, relay J and solenoid S and sound and light display (light-emitting diode, loudspeaker) constitute, or are made of IC2, triode BG1, BG2, diode D2, resistance R 4, R5, R6, R7, R8, sound and light display.
4,, it is characterized in that its relay and acousto-optic display part are made of relay J, solenoid S and light-emitting diode, loudspeaker, or constitute by the IC3 that plays the relay effect, solenoid S according to the described safety interlock system of claim 1.
5, according to the described safety interlock system of claim 1, the mechanical lock that it is characterized in that it is made of straight pin 2 and the connecting rod 4, the pull bar 7 that are connected with straight pin 2 and the lock bolt 10 that is used with it or is made of pull bar 7 and the lock bolt 10 that is used with it.
CN 92235592 1992-09-22 1992-09-22 Safety blocking device for preventing undesired approach to electrical appliances Expired - Fee Related CN2133965Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 92235592 CN2133965Y (en) 1992-09-22 1992-09-22 Safety blocking device for preventing undesired approach to electrical appliances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 92235592 CN2133965Y (en) 1992-09-22 1992-09-22 Safety blocking device for preventing undesired approach to electrical appliances

Publications (1)

Publication Number Publication Date
CN2133965Y true CN2133965Y (en) 1993-05-19

Family

ID=33777319

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 92235592 Expired - Fee Related CN2133965Y (en) 1992-09-22 1992-09-22 Safety blocking device for preventing undesired approach to electrical appliances

Country Status (1)

Country Link
CN (1) CN2133965Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104410040A (en) * 2014-12-02 2015-03-11 国家电网公司 Quick breaking device for power approach of engineering vehicle
CN111809971A (en) * 2020-07-16 2020-10-23 深圳市麦驰安防技术有限公司 Unlocking drive circuit, electric control lock and magnetic lock

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104410040A (en) * 2014-12-02 2015-03-11 国家电网公司 Quick breaking device for power approach of engineering vehicle
CN111809971A (en) * 2020-07-16 2020-10-23 深圳市麦驰安防技术有限公司 Unlocking drive circuit, electric control lock and magnetic lock

Similar Documents

Publication Publication Date Title
CN201150012Y (en) Locking device for safely monitoring electric power line
CN204407714U (en) A kind of switch cubicle with monitoring function
CN2133965Y (en) Safety blocking device for preventing undesired approach to electrical appliances
CN208904418U (en) A kind of safety and firmness type low-tension switch cabinet
CN101531310A (en) A control method and control device of remote switching-off of elevator without machine room
CN210110585U (en) Anti-misoperation device for earthing switch of ring main unit
CN206773057U (en) High- and low-voltage circuit dead electricity warning device
CN206834842U (en) Intelligent O&M power distribution control system
CN2247344Y (en) High-voltage electricity speech sound alarm device
CN202167368U (en) Strong-current blocking electric control system of grounding switch
CN202210637U (en) Safety maintenance system for high-pressure switch
CN110411591A (en) A kind of transformer temperature telemetering immediately monitoring alarm system and its monitoring method
CN201590352U (en) Novel intelligent interlocking device
CN209000785U (en) It prevents from being strayed into high voltage electric equipment electrification interval alarms monitoring for protection device
CN209708262U (en) A kind of anti-theft alarm for cable
CN210404524U (en) Handcart-type cubical switchboard baffle valve maloperation electric locking device that prevents
CN215497565U (en) High tension switchgear is electrified to be reported an emergency and asked for help or increased vigilance and locking system
CN213935160U (en) Alarm device for preventing mistaken entering of electrified switch cabinet
CN105867260B (en) A kind of electrical cabinet door accident indicator and its working method
CN216696453U (en) High-voltage detection alarm device
CN105976483A (en) Intelligent security control device for high-voltage laboratory
CN2145838Y (en) Station change error-proof locking device
CN210516523U (en) Ring main unit misoperation prevention sound and light alarm device
CN214379436U (en) Bolt blocking device for preventing mistaken opening of cabinet door of power distribution cabinet
CN214475194U (en) Transformer substation's screen cabinet blocking device

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee