CN105749462A - Double-rail scaling ladder - Google Patents

Abstract

A double-rail scaling ladder comprises grooved rails, a fire fighting truck and a bridge box, the scaling ladder comprises two grooved rails arranged on an external wall of a tall building, the electric bridge box is arranged on the fire fighting truck, the fire fighting truck supplies a safety power source with the voltage below 36 V, and the bridge box can be installed on the grooved rails through a mechanical arm of the fire fighting truck, is electrically driven, and can ascend and descend in the grooved rails.People are transferred from a rescue window through the bridge box to achieve the purposes of fire fighting and rescue, the scaling ladder is limited by storey height instead of wind power and smog, and the worldwide problem of conducting fire fighting and rescue on a tall building is solved.

Description

Double track aerial ladder

Technical field

The present invention relates to a kind of fire-fighting equipment, during specifically high building breaking out of fire, the aerial ladder of people is rescued in a kind of fire extinguishing.

Background technology

nullNow，High buildings and large mansions get more and more，And be build higher and higher，This causes very big pressure to fire department，Existing aerial ladder just rises the half height less than some high building at all，If high building catches fire，Fire fighter to bear extinguisher，Go straight towards tens layers layer even up to a hundred go fire extinguishing and rescue people，This is inconceivable difficulty，Not only can incur loss through delay fire fighting、Rescue people，Also affect the safety of fireman self，It is instant that people is rescued in fire extinguishing，But，Existing aerial ladder is the highest also with regard to 110 meters in the world，And largely also it is limited by the size of dense smoke and wind-force，High housing-group also tends to generate wind tunnel effect，When natural wind only has under the meteorology of 3-4 level，The wind tunnel effect produced between some height，The strong wind of more than 9 grades can be played，And the strong wind of more than 9 grades can directly affect the stretching, extension of aerial ladder，Even can be thrown by strong wind，And the dense smoke produced when catching fire also can directly affect the operation of aerial ladder，Under these conditions，Aerial ladder the most top in the world is also difficult to put to good use，It is just that fire helicopter also cannot rescue people under dense smoke，Therefore，It is a global difficult problem that people is rescued in the fire extinguishing of upper high building.

Summary of the invention

Rescue the difficult problem of people to crack high building fire extinguishing, the present invention provides a kind of double track aerial ladder, and this aerial ladder is to arrange two grooved rails from top to bottom on the exterior wall of high building, and electronic bridge case is set on fire fighting truck, powered by fire fighting truck, by the mechanical arm of fire fighting truck, can bridge case is installed on grooved rail, bridge case can rise and fall in grooved rail, the program not only can be used to high building fire extinguishing and rescues people, and, bridge case can be lifted by mechanical arm at low layer, it is directly adjacent to scene of fire, puts out a fire and rescue people.

This invention address that the technical measures that its technical problem is taked are, described double track aerial ladder is made up of grooved rail, fire fighting truck, bridge case, the exterior wall of high building arranges two grooved rails from top to bottom, and electronic bridge case is set on fire fighting truck, supplied the safety power supply of below 36V by fire fighting truck, by the mechanical arm of fire fighting truck, can bridge case is installed on grooved rail, electricity consumption drive axle box, bridge case rise and fall can carry out fire extinguishing and rescues people in grooved rail.

On described grooved rail Shi building exterior wall near fire-fighting and rescue window, two grooved rails being close to metope are set, the upper end one of grooved rail is on roof platform, the top cylinder lever connecting rod of grooved rail, the other end of pull bar and the ground of platform are fixed, overcome grooved rail top easily from the stress of wall, the lower end of grooved rail extends to the low layer of high building, about overhead there is the distance of a section more than 10 meters, the purpose of this ground clearance: one prevents from child from climbing utilizing grooved rail to pedal height with thief to commit theft, its two fire fighting truck can away from foundation, greenbelt and the barrier of foundation can be avoided, fire fighting truck is facilitated to sue and labour.nullArticle two, the lower end of grooved rail wherein one long one short，It is easy to bridge case install，The powerful blind rivet of grooved rail is fixed with body of wall and inner prop，Requirement can bear bigger gravity，Article two, connect with crosspiece between grooved rail，Guarantee that two grooved rails are parallel upwards，The material of grooved rail adopts channel-section steel，The notch of two channel-section steels back-to-back setting during installation，And it is fixed on abreast on body of wall，In order to bridge case can be parked on grooved rail，Outside open keyhole at grooved rail，The position correspondence rescue window of lockhole，Lockhole is in oval up and down，The back side stationary rack of described grooved rail，Tooth bar is equal with grooved rail length，The fixing upper thrust plate of the upper and lower side of described grooved rail and lower thrust plate，Lower thrust plate is arranged to upper trans，Lower thrust plate lower end sets pivot，Pivot sets spring，Lower thrust plate is normality at a right angle with grooved rail under the effect of pivot springs，Lower thrust plate is under external force，Spring force can be overcome upwards to dig develop with grooved rail；Grooved rail near described rescue window arranges magnetic block, with magnetic induction switch cooperating；Power supply bare wire is laid in the outside of described two grooved rails, insulant is served as a contrast between line and grooved rail, in case bare wire electric leakage, article two, bare wire is as the both positive and negative polarity of DC source, and the lower end of bare wire separates with grooved rail, connects cable after separation, cable embedment wall leads to the bottom of exterior wall, and access in the distribution box being arranged on exterior wall, distribution box is powered by fire fighting truck, and the power supply of power supply is direct current safety power supply.

nullDescribed fire fighting truck arranges mechanical arm (prior art) and electrically driven (operated) bridge case，Mechanical arm adopts hydraulic-driven，Can swing up and down，Scalable and rotate，Mechanical arm can be stretched and regain，The front end of mechanical arm arranges bridge tank tower，Bridge case is seated in bridge tank tower，Bridge case can be lifted mobile by mechanical arm and load in grooved rail，Mechanical arm sets slide，Described slide both sides set guardrail，Fire fighting truck sets People's Bank of China's ladder，People's Bank of China's ladder is connected with slide on mechanical arm，Bracket is set at fire fighting truck afterbody，Or on the top of fire-fighting headstock, set bracket，When mechanical arm is regained，Bridge tank tower is shelved on together with bridge case on the bracket of fire fighting truck afterbody and sets level，Or it is shelved on the bracket on fire fighting truck head top,Fire fighter can pass through the People's Bank of China's ladder on fire fighting truck and the slide on mechanical arm enters bridge case from ground，Such design，Make tall-building fire fighting car need not bear huge flexible aerial ladder，Deadweight and the volume of fire fighting truck can be reduced，Make fire fighting truck more light and flexible，Will not seem heavy because bearing huge aerial ladder，Thus improve the mobility of fire fighting truck.

nullDescribed bridge case is by framework、Eyelid covering、Survival capsule、Pulley yoke、Pass a bridge、Slip contact arm、Gear-box、Drive motor、Control system、Electromagnetic lock、Travel switch and magnetic induction switch etc. form，Described framework makes the box of square，The ectonexine of framework makes eyelid covering with heat insulation and opaque material，In order to avoid stopping hyperthermia radiation and being rescued the probably height sense that personnel cause due to vision，The region that described framework surrounds is survival capsule，Survival capsule sets first and second，Described first near fire-fighting and rescue window side，Sliding door mode is adopted to open and close，Fire-fighting and rescue window is led to after opening，Described first sets gap bridge towards fire-fighting and rescue window side，Gap bridge is to set slide rail and chute in the bottom of bridge case and top，Slide rail is installed in the bridge plate both sides passed a bridge，Slide rail coordinates installation with the chute in bridge bottom portion，Both sides, the front end vertical columns passed a bridge，Folding guard rail is set between column and bridge case，As preventer，Holdee's imprudence foot can be prevented from two landings of passing a bridge，The top passed a bridge connects cross bar，Cross bar connecting sliding rail，The slide rail of cross bar coordinates installation with the chute of bridge box top，The sliding passed a bridge can manually or electronic realize，Gap bridge can be connected with window after skidding off，As the passage connecting rescue window and survival capsule，Convenient plug into personnel from rescue window；On the basket wall on described second opposite being opened in first, second is designed to mobile door, the slide on fire fighting truck mechanical arm can be led to after enabling, this door sets self-locking device, can not opening under normal circumstances, only after bridge block enters the bridge tank tower on mechanical arm, the contact arm on bridge tank tower just can be opened after backing down door lock, to prevent bridge case from being opened by mistake this door in running aloft, and the unsafe factor existed；Two parallel pulley yokes are fixed at the back side of described bridge case, article two, pulley yoke correspondence grooved rail, pulley yoke is installed two groups of pulleys, two groups of pulleys are separately mounted to the side of pulley yoke, pulley after installation just embeds in the notch of two grooved rails, and bridge case can slide up and down along grooved rail in the rolling of pulley；Described bridge case sets slip contact arm (prior art) near the position of bare wire, contact on contact arm and bare contact, to switch on power；Described bridge bottom portion arranges gear-box by grooved rail side, gear-box output gear is meshed with the tooth bar on grooved rail, the power shaft of gear-box couples drive motor, by gear operating on tooth bar, driving bridge boxcar raising and lowering in grooved rail, described drive motor arranges electromagnetic brake (prior art)；Described bridge case correspondence channel-section steel hole site of locking sets electromagnetic lock, the lock core of electromagnetic lock can be inserted in the lockhole on channel-section steel, described electromagnetic lock arranges the hands handle manually stopped, when electromagnetic lock and electromagnetic brake all failure fault, can manually brake and stop bridge case, to guarantee safety, the control system of described bridge case sets two sets (prior art), a set of hands moves, a set of remote control, manual control system is arranged on bridge case, the controller of remote control is on fire fighting truck, the upper and lower side of described bridge chamber interior wall, travel switch is installed in the position of corresponding grooved rail, when bridge case is up or declines, when the contact of travel switch encounters the bottom stopper push pedal on grooved rail, the electromagnetic brake action of bridge case, check bridge case, within bridge case is limited in the upper and lower side of grooved rail；Described magnetic induction switch is arranged on bridge case by magnetic block side, when magnetic induction switch crosses the magnetic block on grooved rail, exciting magnetic induction switch action, make drive motor slow down, described bridge case is by arranging spherical roller in the one side of body of wall, a part for roller is protruding, higher than all parts on the tool back plane of bridge case, including pulley yoke, when metope is pressed close at the back side of bridge case, roller can be passed through move on metope, to facilitate the assembly pulley of bridge case to embed in grooved rail；Described survival capsule sets emergency case, case has first-aid applicance and dense smoke district breathing mask for lifesaving (separate case application), use when entering pyrotechnics district in order to bridge case.

nullWhen manipulating bridge case and preparing to stop the rescue window specified，First magnetic induction switch slips over the magnetic block on grooved rail，Magnetic induction switch action under the magnetic force of magnetic block attracts，Send reduce-speed sign，Drive motor slows down，Bridge case is made to go slowly，Simultaneously,The lock core of electromagnetic lock slides on grooved rail face，It is immediately inserted in lockhole when the lock core of electromagnetic lock is directed at lockhole，Owing to lockhole is oval，Lock core has one section to help punching distance after inserting lockhole，To reduce impulsive force during lock core insertion lockhole，When lock core just inserts lockhole，The electromagnetic brake action of drive motor，Bridge case is made slowly to run，Until when the bottom of lock core and lockhole or upper touching，Electromagnetic brake is stopped tightly immediately，Make drive motor shut down to await orders，Whole bridge case hovers on grooved rail under wheel and rack and lock core and the dual carrying of lockhole，Bridge case is just parked in selected rescue window side safely.

nullWhen hug greatly catch fire sue and labour time，The fire fighting truck carrying bridge case is opened，Be parked in wall under grooved rail with near，Fire-fighting and rescue personnel can enter from the slide mechanical arm in the survival capsule of bridge case，By mechanical arm, bridge case is lifted on the metope leaned against under grooved rail，Moved on metope by roller，Bridge case pulley is directed at the lower end of a long grooved rail，Pulley is made to embed in grooved rail，And upwards elect，Another group pulley is made also to embed in another short grooved rail，The pulley of bridge case along grooved rail upwards slide time，Push that lower thrust plate is upwards counter to be risen，Pass through with suspension bridge case，When whole bridge case is by lower thrust plate，Lower thrust plate resets to right angle condition，More than the lower end that bridge case is limited in grooved rail can be coordinated with travel switch，It is unlikely bridge case and skids off grooved rail，One is long and the other is short in grooved rail lower end，It is facilitate the pulley of bridge case to be first directed at a long grooved rail just，So it is easier to make pulley embed in grooved rail，After the pulley of bridge case has fully embedded into grooved rail，Connect bridge case power supply，By the remote control on the manipulation of bridge case or fire fighting truck is carried out drive axle box，Bridge case is made to depart from the bridge tank tower on mechanical arm and up，Portability cavity rotary hose rises simultaneously，When bridge case rises to the window sued and laboured，The gap bridge of bridge case is skidded off，Connect rescue window，Fire fighter takes rotary hose and enters window，Inspect the condition of a fire to put out a fire，Dense smoke district breathing mask for lifesaving is distributed to personnel to be rescued simultaneously，And according to the order of sequence personnel to be rescued are accessed in survival capsule，First gap bridge is regained when bridge case to leave rescue window，Under guaranteeing safety，Up or the decline of manipulation bridge case，Being delivered to the window of safe aspect by the personnel of rescuing or delivering on the fire fighting truck mechanical arm waited below，Quickly can be come on ground by the slide of mechanical arm and People's Bank of China's ladder by the personnel of rescuing，Thus reaching high building fire extinguishing to rescue the purpose of people.

The invention has the beneficial effects as follows, solve a difficult problem for double track aerial ladder insufficient height, can rescuing people quickly through the present invention from the fire extinguishing of fire-fighting and rescue window, cost is low.Purchase a top high building hook and ladder at present, want more than 2,000 6 hundred ten thousand yuan, and the present invention is with same money, can calculate according to installing four groups of grooved rails on the building metope of building 80 floor height, cost is not over 200,000, so, can at 100 80 floor or at the big mounting groove rail upstairs of 200 40 floor, and these costs can calculate in the cost making building, remaining money can reproduce the fire fighting truck of 5 present invention, the present invention's is with low cost by contrast, and simple in construction, fire fighting truck of the present invention is maneuverability owing to the lightweight of self is little, the not impact of wind-engaging and smog, top high building hook and ladder also only has 110 meters high in the world at present, the high building of more than 35 layers is just beyond one's ability to help, and the present invention can put out a fire in any a layer of high building and rescue people.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the invention will be further described.

Fig. 1 is the structural representation of grooved rail.

Fig. 2 is the structural representation of fire fighting truck.

Fig. 3 is the structural representation of bridge case.

Fig. 4 be pulley yoke with grooved rail coordinate figure.

Fig. 5 is the schematic diagram of roller.

nullIn figure，1. fire-fighting and rescue window，2. grooved rail，3. upper end，4. pull bar，5. lower end,6. powerful blind rivet,7. crosspiece,8. lockhole,9. tooth bar,10. go up thrust plate,11. lower thrust plate,12. magnetic block，13. power supply bare wire,14. cable，15. distribution box，16. fire fighting truck，17. mechanical arm，18. bridge case，19. bridge tank tower，20. slide，21. guardrail，22. air cushion，23. retaining wall，24.，People's Bank of China's ladder，25. bracket，26. framework，27. eyelid covering，28. top eyelid covering，29. inwall eyelid covering，30. survival capsule，31. first，32. first，33. pass a bridge，34. slide rail，35. chute，36. column，37. folding guard rail，38. cross bar，39. pulley yoke，40. slip contact arm，41. gear-box，42. drive motor，43. electromagnetic lock，44. handle,45. manual control system,46. travel switch,47. magnetic induction switch,48. emergency case,49. pulley,50. notch,51. roller.

Detailed description of the invention

nullIn FIG,On building exterior wall near fire-fighting and rescue window 1，Two grooved rails 2 being close to metope are set，The upper end 3 one of grooved rail is on roof platform，The top cylinder lever connecting rod 4 of grooved rail，The other end of pull bar and the ground of platform are fixed，Overcome grooved rail top easily from the stress of wall，The lower end 5 of grooved rail extends to the low layer of high building，About overhead there is the distance of a section more than 10 meters，Article two, the lower end of grooved rail wherein one long one short，It is easy to bridge case install，The powerful blind rivet 6 of grooved rail is fixed with body of wall and inner prop，Requirement can bear bigger gravity，Article two, connect with crosspiece 7 between grooved rail，Guarantee that two grooved rails are parallel upwards，The material of grooved rail adopts channel-section steel，The notch of two channel-section steels back-to-back setting during installation，And it is fixed on abreast on body of wall，In order to bridge case can be parked on grooved rail，Outside open keyhole 8 at grooved rail，The position correspondence rescue window of lockhole，Lockhole is in oval up and down，The back side stationary rack 9 of described grooved rail，Tooth bar is equal with grooved rail length，The fixing upper thrust plate 10 of the upper and lower side of described grooved rail and lower thrust plate 11；Grooved rail near described rescue window arranges magnetic block 12, with magnetic induction switch cooperating；Power supply bare wire 13 is laid in the outside of described two grooved rails, insulant is served as a contrast between line and grooved rail, in case bare wire electric leakage, article two, bare wire is as the both positive and negative polarity of DC source, and the lower end of bare wire separates with grooved rail, connects cable 14 after separation, cable embedment wall leads to the bottom of exterior wall, and access in the distribution box 15 being arranged on exterior wall, distribution box is powered by fire fighting truck, and the power supply of power supply is direct current safety power supply.

In fig. 2, described fire fighting truck 16 arranges mechanical arm 17 and electrically driven (operated) bridge case 18, mechanical arm adopts hydraulic-driven, can swing up and down, scalable and rotate, mechanical arm can be stretched and regain, the front end of mechanical arm arranges bridge tank tower 19, bridge case is seated in bridge tank tower, bridge case can be lifted mobile by mechanical arm and load in grooved rail, mechanical arm sets slide 20, described slide both sides set guardrail 21, the lower end of slide sets the gentle retaining wall 23 of air cushion 22, fire fighting truck sets People's Bank of China's ladder 24, People's Bank of China's ladder is connected with slide on mechanical arm, bracket 25 is set at fire fighting truck afterbody, or on the top of fire-fighting headstock, set bracket, when mechanical arm is regained, bridge tank tower 19 is shelved on together with bridge case 18 on the bracket 25 of fire fighting truck afterbody and sets level, or it is shelved on the bracket on fire fighting truck head top.

nullIn figure 3,Described bridge case is by framework、Eyelid covering、Survival capsule、Pulley yoke、Pass a bridge、Slip contact arm、Gear-box、Drive motor、Control system、Electromagnetic lock、Travel switch and magnetic induction switch etc. form，Described framework 26 makes the box of square，The ectonexine of framework makes eyelid covering 27 with heat insulation and opaque material，28 is top eyelid covering，29 is inwall eyelid covering，In order to avoid stopping hyperthermia radiation and being rescued the probably height sense that personnel cause due to vision，The region that described framework surrounds is survival capsule 30，Survival capsule sets first 31 and first 32，Described first 31 near fire-fighting and rescue window side，Sliding door mode is adopted to beat，Fire-fighting and rescue window is led to after opening，Described first sets gap bridge 33 towards fire-fighting and rescue window side，Gap bridge is to set slide rail 34 and chute 35 in the bottom of bridge case and top，Slide rail is installed in the bridge plate both sides passed a bridge，Slide rail coordinates installation with the chute in bridge bottom portion，Both sides, the front end vertical columns 36 passed a bridge，Folding guard rail 37 is set between column and bridge case，As preventer，Holdee's imprudence foot can be prevented from two landings of passing a bridge，The top passed a bridge connects cross bar 38，Cross bar connecting sliding rail，The slide rail of cross bar coordinates installation with the chute of bridge box top，The sliding passed a bridge can manually or electronic realize，Gap bridge can be connected with window after skidding off，As the passage connecting rescue window and survival capsule；On the basket wall on described second 32 opposite being opened in first, second is designed to mobile door, the slide on fire fighting truck mechanical arm can be led to after enabling, this door sets self-locking device, can not open under normal circumstances, only after bridge block enters the bridge tank tower on mechanical arm, the contact arm on bridge tank tower just can be opened after backing down door lock；Two parallel pulley yokes 39 are fixed at the back side of described bridge case, and described bridge case sets slip contact arm 40 near the position of bare wire, contact on contact arm and bare contact, to switch on power；Described bridge case arranges gear-box 41 by wall side, gear-box output gear is meshed with the tooth bar on grooved rail, the power shaft of gear-box couples drive motor 42, by gear operating on tooth bar, drive bridge boxcar raising and lowering in grooved rail, state drive motor and electromagnetic brake (prior art) is set；Described bridge case correspondence channel-section steel hole site of locking sets electromagnetic lock 43, the lock core of electromagnetic lock can be inserted in the lockhole on channel-section steel, described electromagnetic lock arranges the handle 44 manually stopped, when electromagnetic lock and electromagnetic brake all failure fault, can manually brake and stop bridge case, to guarantee safety, the control system of described bridge case sets two sets (prior art), a set of hands moves, a set of remote control, manual control system 45 is arranged on bridge case, the controller of remote control is on fire fighting truck, travel switch 46 is installed in the position of described bridge case correspondence grooved rail, when bridge case is up or declines, when the contact of travel switch encounters the bottom stopper push pedal on grooved rail, the electromagnetic brake action of bridge case, check bridge case, within bridge case is limited in the upper and lower side of grooved rail；Described magnetic induction switch 47 is arranged on bridge case by magnetic block side, when magnetic induction switch crosses the magnetic block on grooved rail, can excite magnetic induction switch action, make drive motor slow down；Described survival capsule sets emergency case 48, case has first-aid applicance and dense smoke district breathing mask for lifesaving (separate case application), use when entering pyrotechnics district in order to bridge case.

In the diagram, the corresponding grooved rail of described two pulley yokes 39, installs two groups of pulleys 49 on pulley yoke, and two groups of pulleys are separately mounted to the side of pulley yoke, pulley after installation just embeds in the notch 50 of two grooved rails, and bridge case can slide up and down along grooved rail in the rolling of pulley.

In Figure 5, described bridge case 18 is by arranging spherical roller 51 in the one side of body of wall, a part for roller is protruding, higher than all parts on the tool back plane of bridge case, including pulley yoke 39, when metope is pressed close at the back side of bridge case, roller can be passed through and move on metope, to facilitate the assembly pulley of bridge case to embed in grooved rail.

Claims (4)

1. double track aerial ladder, it is characterized in that: described aerial ladder includes grooved rail, fire fighting truck, bridge case, described grooved rail is to arrange two from top to bottom on the exterior wall of high building, power supply bare wire is laid in the outside of described two grooved rails, and described fire fighting truck arranges electronic bridge case, by fire fighting truck for direct current safety power supply, by the mechanical arm of fire fighting truck, can being installed on grooved rail by bridge case, electricity consumption drive axle box, described bridge case can rise and fall in grooved rail.

null2. double track aerial ladder according to claim 1，It is characterized in that: on described grooved rail Shi building exterior wall near fire-fighting and rescue window，Two grooved rails being close to metope are set，The upper end one of grooved rail is on roof platform，The top cylinder lever connecting rod of grooved rail，The other end of pull bar and the ground of platform are fixed，Overcome grooved rail top easily from the stress of wall，The lower end of grooved rail extends to the low layer of high building，About overhead there is the distance of a section more than 10 meters，Article two, the lower end of grooved rail wherein one long one short，It is easy to bridge case install，The powerful blind rivet of grooved rail is fixed with body of wall and inner prop，Requirement can bear bigger gravity，Article two, connect with crosspiece between grooved rail，Guarantee that two grooved rails are parallel upwards，The material of grooved rail adopts channel-section steel，The notch of two channel-section steels back-to-back setting during installation，And it is fixed on abreast on body of wall，In order to bridge case can be parked on grooved rail，Outside open keyhole at grooved rail，The position correspondence rescue window of lockhole，Lockhole is in oval up and down，The back side stationary rack of described grooved rail，Tooth bar is equal with grooved rail length，The fixing upper thrust plate of the upper and lower side of described grooved rail and lower thrust plate，Described lower thrust plate is arranged to upper trans，Lower thrust plate lower end sets pivot，Pivot sets spring，Lower thrust plate is normality at a right angle with grooved rail under the effect of pivot springs，Lower thrust plate is under external force，Spring force can be overcome upwards to dig develop with grooved rail；Grooved rail near described rescue window arranges magnetic block, with magnetic induction switch cooperating；Power supply bare wire is laid in the outside of described two grooved rails, insulant is served as a contrast between line and grooved rail, in case bare wire electric leakage, described two bare wires are as the both positive and negative polarity of DC source, and the lower end of bare wire separates with grooved rail, connect cable after separation, cable embedment wall leads to the bottom of exterior wall, accessing in the distribution box being arranged on exterior wall, described distribution box is powered by fire fighting truck, and power supply is direct current safety power supply.

null3. double track aerial ladder according to claim 1，It is characterized in that: described fire fighting truck arranges mechanical arm and electrically driven (operated) bridge case，Described mechanical arm adopts hydraulic-driven，Can swing up and down，Scalable and rotate，Mechanical arm can be stretched and regain，The front end of mechanical arm arranges bridge tank tower，Bridge case is seated in bridge tank tower，Described bridge case can be lifted mobile by mechanical arm and load in grooved rail，Mechanical arm sets slide，Described slide both sides set guardrail，Described fire fighting truck sets People's Bank of China's ladder，People's Bank of China's ladder is connected with the slide on mechanical arm，Described fire fighting truck afterbody sets bracket，Or on the top of fire-fighting headstock, set bracket，When mechanical arm is regained，Bridge tank tower is shelved on together with bridge case on the bracket of fire fighting truck afterbody and sets level，Or it is shelved on the bracket on fire fighting truck head top,Fire fighter can pass through the People's Bank of China's ladder on fire fighting truck and the slide on mechanical arm enters bridge case from ground.

null4. double track aerial ladder according to claim 1，It is characterized in that: described bridge case includes framework、Eyelid covering、Survival capsule、Pulley yoke、Pass a bridge、Slip contact arm、Gear-box、Drive motor、Control system、Electromagnetic lock、Travel switch and magnetic induction switch，Described framework makes the box of square，The ectonexine of framework makes eyelid covering with heat insulation and opaque material，In order to avoid stopping hyperthermia radiation and being rescued the probably height sense that personnel cause due to vision，The region that described framework surrounds is survival capsule，Survival capsule sets first and second，Described first near fire-fighting and rescue window side，Sliding door mode is adopted to open and close，Described first open after lead to fire-fighting and rescue window，Described first sets gap bridge towards fire-fighting and rescue window side，Described gap bridge is to set slide rail and chute in the bottom of bridge case and top，Slide rail is installed in the bridge plate both sides passed a bridge，Described bridge plate slide rail coordinates installation with the chute in bridge bottom portion，Both sides, the front end vertical columns passed a bridge，Folding guard rail is set between column and bridge case，As preventer，Holdee's imprudence foot can be prevented from two landings of passing a bridge，The top of described gap bridge connects cross bar，Cross bar connecting sliding rail，The slide rail of described cross bar coordinates installation with the chute of bridge box top，The sliding passed a bridge can manually or electronic realize，Gap bridge can be connected with window after skidding off，As the passage connecting rescue window and survival capsule；On the basket wall on described second opposite being opened in first, second is designed to mobile door, the slide on fire fighting truck mechanical arm can be led to after enabling, described second sets self-locking device, can not open under normal circumstances, only after bridge block enters the bridge tank tower on mechanical arm, the contact arm on bridge tank tower just can be opened after backing down door lock, to prevent bridge case from being opened by mistake this door in running aloft；Two parallel pulley yokes are fixed at the back side of described bridge case, article two, pulley yoke correspondence grooved rail, pulley yoke is installed two groups of pulleys, described two groups of pulleys are separately mounted to the side of pulley yoke, pulley after installation just embeds in the notch of two grooved rails, and bridge case can slide up and down along grooved rail in the rolling of pulley；Described bridge case sets slip contact arm near the position of bare wire, contact on described slip contact arm and bare contact, to switch on power；Described bridge bottom portion arranges gear-box by grooved rail side, gear-box output gear is meshed with the tooth bar on grooved rail, and the power shaft of described gear-box couples drive motor, by gear operating on tooth bar, driving bridge boxcar raising and lowering in grooved rail, described drive motor arranges electromagnetic brake；Described bridge case correspondence channel-section steel hole site of locking sets electromagnetic lock, and the lock core of described electromagnetic lock can be inserted in the lockhole on channel-section steel, and described electromagnetic lock arranges the handle manually stopped, and when electromagnetic lock and electromagnetic brake all failure fault, can manually brake and stop bridge case；The control system of described bridge case sets two sets, a set of manually, a set of remote control, manual control system is arranged on bridge case, the controller of remote control is on fire fighting truck, the upper and lower side of described bridge chamber interior wall, travel switch is installed in the position of corresponding grooved rail, when bridge case is up or declines, when the contact of travel switch encounters the bottom stopper push pedal on grooved rail, the electromagnetic brake action of bridge case, checks bridge case, within bridge case is limited in the upper and lower side of grooved rail；Described magnetic induction switch is arranged on bridge case by magnetic block side, when magnetic induction switch crosses the magnetic block on grooved rail, exciting magnetic induction switch action, make drive motor slow down, described bridge case is by arranging spherical roller in the one side of body of wall, a part for roller is protruding, higher than all parts on the tool back plane of bridge case, including pulley yoke, when metope is pressed close at the back side of bridge case, roller can be passed through move on metope, to facilitate the assembly pulley of bridge case to embed in grooved rail；Described survival capsule sets emergency case, case has first-aid applicance and dense smoke district breathing mask for lifesaving, use when entering pyrotechnics district in order to bridge case.