CN2769669Y

CN2769669Y - Double-loop and antiexplosive mine safety cap lamp

Info

Publication number: CN2769669Y
Application number: CNU2004200807510U
Authority: CN
Inventors: 毛传礼; 石富江
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-10-30
Filing date: 2004-10-30
Publication date: 2006-04-05
Anticipated expiration: 2014-10-30

Abstract

The utility model relates to a double-loop safety cap lamp for explosion preventing mines, which comprises a cap casing, a cap lining and a lamp cap hung on the cap casing. The utility model is characterized in that the lamp and a cap are in integral packaging structure that a battery groove is arranged in an interlayer formed from the cap casing and the cap lining; a double-loop bulb is used in the lamp cap and is provided with two groups of mutually independent filament loops; a double-loop switching switch is arranged in the lamp cap; a protective circuit is arranged; thermosensitive polymerizing switches are arranged in series in the filament power supply loop, and a charging and discharging integrated protector is arranged in a battery charging and discharging loop. The utility model can use lithium batteries or nickel-hydrogen batteries or lead-acid batteries. The utility model has the advantages of better safety, better reliability, better environmental protection, simple structure and convenient use, and is suitable for industries and departments such as mines, tunnels, geology, architecture, water conservancy, exploration, archaeology, etc.

Description

The explosion-proof mining safety helmet lamp in double loop

Technical field:

The utility model relates to lighting device, more particularly especially a kind of safety cap lamp that has in underground work illumination and security protection head double action.

Background technology:

Mine, tunnel or cavern operating personnel need continuous reliable illumination.Particularly contain in the occasion of explosive substances such as gas, methane, dust in the colliery etc., need continuous illumination, need pre-anti-gas explosion, the head that needs the protection operating personnel is in case injure by a crashing object.But existing mining safety helmet lamp has only a power for illumination loop; poor reliability; short circuit current is big; no short circuit overcurrent protection; be enough to make gas explosion during short circuit; specifically wearing is that battery is hung over waist, is connected with lead between battery and cap lamp, connects lead operating personnel's operation is formed certain obstruction.

Summary of the invention:

The utility model is for avoiding above-mentioned existing in prior technology weak point, providing a kind of double loop explosion-proof mining safety helmet lamp, to guarantee security protection, continuous illumination and easy to use.

The technical scheme that the utility model technical solution problem is adopted is:

The utility model comprises cap shell, hat lining and is articulated in lamp holder on the cap shell.

Design feature of the present utility model is to adopt the integrated collection assembling structure of lamp and cap, comprising:

A, in the interlayer that forms by cap shell and hat lining, battery case is set;

B, adopt the double loop bulb in described lamp holder, described double loop bulb has two groups of separate filament loops, and the double loop change-over switch is set;

C, holding circuit is set, is included in that series connection is provided with the thermally sensitized polymerization switch in the described filament power supply loop, in the battery charging and discharging loop, be provided with and discharge and recharge integrated protector.

Compared with prior art, the beneficial effects of the utility model are embodied in:

1, simple in structure, easy to use.

Adopt lamp, the incorporate packaging type structure of cap, lithium battery or Ni-MH battery are directly installed in the safety cap, do not exist between waist to the connection lead of the crown top of burner, make operating personnel's flexible movements convenient.The lamp line collection is contained in the safety cap, frangibility not, and fault rate reduces.

2, reliability height.

Adopt the double loop lamp holder,, can switch to another and organize electric loop and continue to keep illumination even wherein one group of electricity loop is blown.

3, security is good.

The battery charging and discharging integrated protector provides overvoltage, under-voltage and short circuit overcurrent protection for battery and power for illumination loop.The thermally sensitized polymerization switch provides dual short circuit overcurrent protection.

4, battery highly versatile.

Can be equipped with lithium battery or Ni-MH battery, in light weight, good environmental protection.

5, the utility model can be widely used in containing the mine lighting and the cephalic protection such as colliery, tunnel, cavern of explosive substances such as gas, methane, dust, also can be used as the portable illumination apparatus of field work departments such as geology, building, water conservancy, tourism, exploration, archaeology.

Description of drawings:

Fig. 1 is the utility model holder structure schematic diagram.

Fig. 2 is the utility model structural representation

Fig. 3 is the utility model battery charging and discharging integrated protector circuit theory diagrams.

Number in the figure:

Number in the figure: 1 bulb, 2 lamp housings, 3 lamp sockets, 4 springs, 5 reflector lamp bowls, 6 sealing gaskets, 7 cover plates, 8 light covers, 9 conductive reeds, 10 change-over switches, 11 sealing rings, 12 thermally sensitized polymerization switches, 13 hooks, 14 wiring holes, 15 cap shells, 16 hat linings, 17 batteries, 18 integrated protectors, 19 battery cases, 20 lamp cards, 21 lamp holders

The specific embodiment:

Referring to Fig. 2, include cap shell 15, hat lining 16 in the present embodiment and be articulated in lamp holder 21 on the cap shell 15, adopt the integrated collection assembling structure of lamp and cap, as shown in Figure 2, in the interlayer that forms by cap shell 15 and hat lining 16, battery case 19 is set, and battery 17 is placed in the battery case 19, and battery 17 can be Ni-MH battery or lithium battery.

Referring to Fig. 1, in lamp holder 21, adopt double loop bulb 1, this double loop bulb 1 has two groups of separate filament loops, change-over switch 10, two groups of filaments in double loop is set by change-over switch 10 selection work.

As shown in Figure 1, sleeve type lamp socket 3 is set, this lamp socket 3 slides in the lamp housing 2, and and lamp housing 2 between be provided with spring 4, the bulb 1 that is fixed in the lamp socket 3 is pressed on the cover plate 7, and lamp holder 1 afterbody contact and conductive reed 9 are jumper connection, and the periphery of bulb 1 is a reflector lamp bowl 5.Constitute sealed type lampshade by lamp housing 2, cover plate 7 and light cover 8.Because of compressing of cover plate 7, the contact switch that bulb 1 afterbody contact and conductive reed 9 form is on-state; In case the glass bulb fragmentation of bulb 1, under the effect of spring 4, lamp socket 3 is to front slide, the contact switch that its afterbody contact and conductive reed 9 form promptly in opened condition, thereby when bulb glass is broken, cut off the electricity supply immediately.During concrete enforcement, spring 4 can be cylindrical screw formula, trochoid spiral formula or plate-sheet-type, and cover plate 7 can be glass, crystal, crystalline ceramics, lucite or transparent plastic etc.

Shown in the figure, in the power supply loop, thermally sensitized polymerization switch 12 is set, thermally sensitized polymerization switch 12 and double loop change-over switch 10 all are enclosed in the lamp housing 2 admittedly, form blast resistance construction.In order to guarantee the sealing property of this blast resistance construction, can on region of interest, be included between cover plate 7, lamp housing 2 and the light cover 8 sealing gasket 6 is set, and between selector switch 10 and lamp housing 2, sealing ring 11 etc. is set.

Thermally sensitized polymerization switch 12 is made up of polymer resin and conducting particles, and the size of its impedance is relevant with the height of temperature.Under the normal temperature state, conducting particles forms crystalloid low resistance chain link in polymer; When temperature rises, and when surpassing switching threshold, the crystalloid chain link is destroyed, becomes gluey amorphous state, and conducting particles is separated from polymer, the impedance of galvanic circle is risen, until being blocked.

When normal illumination, the lighting current in the circuit is also little, and it is less to produce heat, and thermally sensitized polymerization switch 12 is in the normal temperature state, and its impedance is little, can not destroy the power for illumination path; In case short trouble occurs, produce very big short circuit current, thermally sensitized polymerization switch 12 is heated and the temperature rising, and its impedance is also sharply increased, blocking-up power for illumination path, thus short-circuit protection is provided.After fault was excluded, along with the reduction of temperature, the conduction chain link of thermally sensitized polymerization formed again, and its impedance descends, and finishes automatic reparation.This performance applications of thermally sensitized polymerization switch is reached in present embodiment the short circuit overcurrent protection of circuit and the function that can repair automatically.

At multi-form bulbs such as screw-type, bayonet type or flange forms, if between lamp socket 3 and bulb 1 the corresponding respective outer side edges of formation.

In concrete the enforcement, offer wiring hole 14 on the sidewall of lamp housing 2, hook 13 is set at the back of lamp housing 2, hook 13 is hooked in the lamp card 20, and it is fixing that lamp holder 21 is able on cap shell 15.

The holding circuit that is provided with in the present embodiment is also included within battery charging and discharging integrated protector 18 is set in the battery charging and discharging loop.

Referring to Fig. 3; integrated protector 18 adopts protection chip AIC; the VCC that the positive pole of battery pack and negative pole end insert chip AIC respectively holds 5 pin and CND to hold 2 pin; two groups of filament loop Rz are by change-over switch 10; the anodal BAAT+ end and the negative pole BAAT-end that connect loaded line respectively; the charge/discharge control circuit that is made of discharge diode VD1 and discharge control power tube VT1 is set in the discharge loop of described battery pack; the OD that the base stage of power tube VT1 meets chip AIC holds 3 pin; the charging control circuit that is made of charging diode VD2 and charging control power tube VT2 is set in the batteries charging loop, and the OC that the base stage of power tube VT1 meets chip AIC holds 1 pin.

The all two N channel power pipes of VT1, VT2 in the circuit, resistance R 1 and capacitor C 1 are used for eliminating charger input voltage ripple and interference.Resistance R 2 connects inverse time protection CS end for preventing the charger power supply.Resistance R 3 is the biasing resistor of VT2.PPTC is the short circuit overcurrent protecting component, and promptly the thermally sensitized polymerization switch 12.This integrated protector provides overvoltage, overcurrent and under-voltage protection for battery, as:

1, additives for overcharge protection, when charging voltage arrives and is higher than when overcharging threshold voltage, OC holds the output of 1 pin no current, and the R3 no current flows through and VT2 is ended, and charge circuit disconnects, and prevents to overcharge.

2, over, when voltage dropped to 2.4V, OD held 3 pin output low levels, and VT1 ends, and discharge loop disconnects, and forbids discharge.

3, overcurrent protection, it is the discharge current control end that CS holds 4 pin, it is the detection discharge current continuously, if discharge current surpasses the setting threshold values and make the CS end surpass 0.2V, its result is identical with overdischarge, and VT2 is ended, and forbids discharge.That is to say when faults such as short circuit, but moment disconnects VT2 and plays a protective role.

4, PPTC short circuit overcurrent protecting component is the thermally sensitized polymerization switch, in normal operation, is low resistance (milliohm level).Electric current sharply increases and temperature when raising when short circuit, and (Millisecond) blocking-up electric current passes through in a flash, realizes overcurrent protection.In case overcurrent fault is got rid of, temperature descends, and element reverts to low impedance value automatically, recloses lighting circuit.

The utility model equally also can be equipped with lead-acid battery and use, as long as lead-acid battery is hung between waist, gets final product with being connected by external wire between the cap lamp.

Claims

1, the explosion-proof mining safety helmet lamp in double loop comprises cap shell (15), hat lining (16) and is articulated in lamp holder (21) on the cap shell (15), it is characterized in that: adopt the integrated collection assembling structure of lamp and cap, comprising:

A, in the interlayer that forms by cap shell (15) and hat lining (16), battery case (19) is set;

B, adopt double loop bulb (1) in described lamp holder (21), described double loop bulb (1) has two groups of separate filament loops, and double loop change-over switch (10) is set;

C, holding circuit is set, is included in that series connection is provided with thermally sensitized polymerization switch (12) in the described filament power supply loop, in the battery charging and discharging loop, be provided with and discharge and recharge integrated protector (18).

2, according to the explosion-proof mining safety helmet lamp in the described double loop of claim 1, it is characterized in that in described lamp holder (21), being provided with slidingtype lamp socket (3), between lamp socket (3) and the lamp housing (2) spring (4) is set, the bulb (1) that is fixed in the lamp socket (3) is pressed on the cover plate (7), and lamp holder (1) afterbody contact and conductive reed (9) are jumper connection.

3, the explosion-proof mining safety helmet lamp in double loop according to claim 2, it is characterized in that constituting sealed type lampshade by described lamp housing (2), cover plate (7) and light cover (8), described thermally sensitized polymerization switch (12) and double loop change-over switch (10) all are enclosed in the lamp housing (2) admittedly.

4, the explosion-proof mining safety helmet lamp in double loop according to claim 1, the battery (17) that it is characterized in that being placed in the battery case (19) is lithium battery or Ni-MH battery.

5; packaging type according to claim 1 double loop mining safety helmet lamp; it is characterized in that described battery charging and discharging integrated protector adopts protection chip AIC; the positive pole of battery pack and negative pole end insert VCC end (5 pin) and the CND end (2 pin) of chip AIC respectively; two groups of filament loop RZ are by change-over switch 10; the anodal BAAT+ end and the negative pole BAAT-end that connect loaded line respectively; the charge/discharge control circuit that is made of discharge diode VD1 and discharge control power tube VT1 is set in the discharge loop of described battery pack; the base stage of power tube VT1 connects the OD end (3 pin) of chip AIC; the charging control circuit that is made of charging diode VD2 and charging control power tube VT2 is set in described batteries charging loop, and the base stage of power tube VT1 connects the OC end (1 pin) of chip AIC through resistance R 3.