CN213297812U - Opening mechanism for aluminum alloy folding outdoor escape ladder - Google Patents

Abstract

The utility model belongs to the field of self-rescue and escape in the outdoor of buildings, and relates to an opening mechanism for an aluminum alloy folding type outdoor escape ladder, which comprises a support rod movably arranged at the inner side of the upper end of a wall-attached frame and a matching buckle fixedly arranged at the inner side of the upper end of the wall-attached frame, the bottom of the support rod is fixedly provided with a snap ring sleeved on the matching buckle, the inner side of a protective frame is fixedly provided with a hook sleeved on the matching buckle, the inner side of the upper end of the wall-attached frame is hinged with a pull rod sleeved on a gravity rod in the wall-attached frame, one end of the support rod close to the gravity rod is fixedly provided with a first spring, a connecting rod is arranged between the first spring and the pull rod, one end of the connecting rod is connected with the first spring, the other end of the connecting rod is fixedly provided with a wedge block, a clamping groove matched, the falling of the folding crawling ladder is uncontrollable, so that the folding crawling ladder is dangerous to fall off, and the problem of linkage triggering of the whole structure cannot be realized.

Description

Opening mechanism for aluminum alloy folding outdoor escape ladder

Technical Field

The utility model belongs to the field of fleing of saving oneself in the building open air relates to an aluminum alloy folded form opening mechanism for outdoor emergency ladder, especially relates to a high-rise resident family and high-rise public office space, if meet the opening mechanism for the outdoor emergency ladder of aluminum alloy folded form that uses when the irresistible disaster such as natural disasters and fire incident.

Background

With the rapid development of urban construction, high-rise buildings are increasing, and become main signs of modern cities gradually. The high-rise building has the advantages of multiple layers, large scale, centralized personnel, more combustible materials and higher escape difficulty once a fire disaster happens. When fire smoke spreads, the visibility is low, and the difficulty of evacuating people at the first time is improved sharply. The fire accidents of high-rise buildings at the present stage are in a remarkable rising trend, the existing fire rescue means can not adapt to the development speed of the high-rise buildings, and a novel folding type outdoor escape ladder needs to be designed and developed according to the fire characteristics of the high-rise buildings and the technical conditions of fire-fighting escape equipment.

The outdoor escape system is not easy to be threatened by smoke and fire, and not only can be used for evacuating personnel, but also can be used for firefighters to ascend a high building for saving life. Structurally, the foldable solar energy building can be folded and contracted, and does not occupy effective indoor building area. In addition, the smoke invading the stairs can be blown away by wind quickly and is not influenced by the wind direction. Therefore, the air-permeable building has good ventilation diffusivity and economy, and can add a festoon to the exterior of the building when the modeling is well processed. Along with the development of economy, building height and structural variation are various, and indoor fire phenomenon takes place occasionally, and evacuation often accompanies the casualties in the building, so this outdoor escape system walks into masses 'field of vision, because of its have safety protection concurrently, trigger characteristics such as folding, convenient to use, appearance pleasing to the eye, bearing capacity are good, receive building developer's liking deeply, outdoor escape system market demand is huge.

The existing outdoor escape system opening mechanism can not be opened when an outdoor escape system is realized, and does not have a locking structure of a folding crawling ladder, so that the falling of the folding crawling ladder is uncontrollable, the falling danger exists, and the linkage triggering of the whole structure can not be realized.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses a solve the locking structure that current outdoor escape system opening mechanism does not have folding cat ladder, folding cat ladder whereabouts is uncontrollable, has the landing dangerous, can not realize the problem that overall structure linkage triggered, provide an aluminum alloy folding type opening mechanism for outdoor escape ladder.

In order to achieve the above object, the utility model provides an outdoor emergency ladder of aluminum alloy folded form uses opening mechanism, attach inboard bracing piece and the fixed mounting of wall frame upper end attach the inboard joining in marriage of wall frame upper end and detain including movable mounting, bracing piece bottom fixed mounting has the cover at the snap ring of joining in marriage and detaining, the inboard fixed mounting of protection frame has the cover to join in marriage the couple of detaining, it wears to be equipped with the gravity pole to attach the wall frame tip, it has the pull rod of free end cover on the gravity pole to attach the inboard articulated wall frame upper end, the one end fixed mounting that the bracing piece is close to the gravity pole has first spring, be provided with the connecting rod between first spring and the pull rod, the one end and the first spring coupling of connecting rod, the other end fixed mounting of connecting rod has the wedge, set up the draw-in groove with wedge looks.

The beneficial effect of this basic scheme: the gravity pole of one deck is down struck along attaching wall frame lapse to the gravity pole, and the wedge of connecting rod is extracted from the pull rod simultaneously, and the deformation is all resumeed to second spring between connecting rod wedge tip and the pull rod and the first spring between connecting rod and the bracing piece, and the snap ring on the bracing piece outwards removes and buckles the slippage with the couple from joining in marriage, realizes that the automation of emergency ladder struts.

Furthermore, attach the inboard fixed mounting in wall frame upper end and have the through-hole and be convenient for the baffle that the bracing piece wore out, be connected through the connecting block that both ends all are the L type between bracing piece tip and the connecting rod tip, first spring on the bracing piece is spacing between connecting block and baffle. Has the advantages that: the connecting block and the baffle plate have limiting effect on the first spring on the supporting rod.

Furthermore, a sliding block which is provided with a through hole and is convenient for the connecting rod to penetrate out is also fixedly arranged on the wall-attached frame at the connecting rod. Has the advantages that: the sliding block plays a role in limiting the connecting rod to move only horizontally.

Furthermore, the limiting block for preventing the gravity rod from slipping is integrally formed at the upper end part of the gravity rod. Has the advantages that: the limiting block plays a role in preventing the gravity rod from slipping off from the wall-attached frame.

Furthermore, the pull rod is V-shaped, the end part of the pull rod is hinged to the inner side of the upper end of the wall attaching frame, one free end of the pull rod is sleeved on the gravity rod through a lantern ring, and the other free end of the pull rod abuts against the inner wall of the wall attaching frame. Has the advantages that: the V-shaped pull rod has a good supporting effect on the gravity rod, and the gravity rod is prevented from sliding down in a natural state.

The beneficial effects of the utility model reside in that:

the utility model discloses an outdoor emergency ladder of aluminum alloy folded form is with opening mechanism utilizes the gravity pole whereabouts to make wedge-shaped piece and pull rod upper groove separation on the connecting rod, and the deformation is all resumeed to second spring between connecting rod wedge-shaped piece tip and the pull rod and the first spring between connecting rod and the bracing piece, and the slippage is buckled from joining in marriage to the couple to the outside removal of snap ring on the bracing piece, and the telescopic link of protective frame upper end struts protective frame with attaching wall frame, realizes opening of single folded form emergency ladder. The gravity rod falls under the action of gravity to trigger the next floor opening mechanism, so that the linkage triggering of the whole mechanism is realized, and the multiple floors are simultaneously opened and matched. And the opening mechanism for the aluminum alloy folding outdoor escape ladder does not need an external power supply and a control system, has a high-efficiency and quick opening mode, saves time, improves the personnel evacuation efficiency, and ensures the safety of personnel on the fire scene.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic structural view of an opening mechanism for an aluminum alloy folding outdoor escape ladder of the present invention;

FIG. 2 is an assembly view of the drawbar, link, and brace bar of FIG. 1;

fig. 3 is a schematic structural view of the single-climbing aluminum alloy folding outdoor escape ladder of the utility model after being unfolded;

fig. 4 is a schematic structural view of the single-climbing aluminum alloy folding type outdoor escape ladder of the utility model after being folded;

fig. 5 is a schematic structural view of the double-climbing aluminum alloy folding outdoor escape ladder of the utility model after being unfolded;

fig. 6 is a schematic structural view of the folding type outdoor escape ladder of the double-climbing aluminum alloy folding type of the present invention.

Reference numerals: the structure comprises an entrance wall-attached frame 11, an entrance protection frame 12, an upper frame handrail 13, an entrance pedal 14, an upper ladder wall-attached frame 21, an upper ladder protection frame 22, ladder pedals 23, telescopic rods 24, supporting rods 25, cross supports 26, sliding rods 27, an upper folding ladder 28, a lower ladder wall-attached frame 31, a stair protection net 32, a lower frame handrail 33, a lower folding ladder 34, a gravity rod 41, a pull rod 42, a connecting rod 43, a first spring 44, a second spring 45, a matching buckle 46, a clamping ring 47 and a hook 48.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

The opening mechanism for the aluminum alloy folding type outdoor escape ladder shown in fig. 1-2 comprises a support rod 25 movably mounted on the inner side of the upper end of an attached wall frame and a matching buckle 46 fixedly mounted on the inner side of the upper end of the attached wall frame, wherein a snap ring 47 sleeved on the matching buckle 46 is fixedly mounted at the bottom of the support rod 25, a hook 48 buckled on the matching buckle 46 is fixedly mounted on the inner side of a protection frame capable of being folded on the attached wall frame, and the folding locking of the whole escape device is realized through the matching of the hook 48 and the matching buckle 46. Attach wall frame tip and wear to be equipped with gravity pole 41, it has free end cover pull rod 42 on gravity pole 41 to attach wall frame upper end inboard articulated, the one end fixed mounting that bracing piece 25 is close to gravity pole 41 has first spring 44, when escape device is in fold condition, this first spring 44 is in compression state, be provided with connecting rod 43 between first spring 44 and the pull rod 42, the one end and the first spring 44 of connecting rod 43 are connected, the other end fixed mounting of connecting rod 43 has the wedge, set up the draw-in groove with wedge looks adaptation on the pull rod 42. A second spring 45 is arranged between the wedge-shaped block and the pull rod 42, and when the escape device is in the folded state, the second spring 45 is in a compressed state.

The inner side of the upper end of the wall-attached frame is fixedly provided with a baffle plate which is provided with a through hole and is convenient for the support rod 25 to penetrate out, the end part of the support rod 25 is connected with the end part of the connecting rod 43 through connecting blocks of which the two ends are L-shaped, and the first spring 44 on the support rod 25 is limited between the connecting blocks and the baffle plate. A sliding block which is provided with a through hole and is convenient for the connecting rod 43 to penetrate out is also fixedly arranged on the wall attaching frame at the connecting rod 43. The upper end of the gravity rod 41 is integrally provided with a limiting block for preventing the gravity rod 41 from slipping. The pull rod 42 is V-shaped, the end part of the pull rod is hinged to the inner side of the upper end of the wall attaching frame, one free end of the pull rod 42 is sleeved on the gravity rod 41 through a lantern ring, and the other free end of the pull rod abuts against the inner wall of the wall attaching frame.

The opening mechanism for the aluminum alloy folding type outdoor escape ladder has two forms, namely an opening state and a closing state. The outdoor escape system can be opened by opening the opening mechanism, and a linkage rotary outdoor stair structure is formed in the opening state, so that people trapped in a room can escape when a fire disaster happens; when the outdoor escape system is in a closed state, the outdoor escape system can be used as a protective window, is attractive and air-conditioned, is made of aluminum alloy materials, is not easy to rust and has a long service life. The outdoor escape system opening mechanism is mainly used when the outdoor escape system is opened, so that the opening state of the outdoor escape system is mainly introduced.

When the aluminum alloy folding type outdoor escape ladder is opened, the top layer needs to be opened to trigger the gravity rod 41 to slide along the wall-attached frame, the opening mechanism is opened, namely the gravity rod 41 slides downwards along the wall-attached frame to impact the next layer of gravity rod 41, the wedge-shaped block of the connecting rod 43 is pulled out of the pull rod 42, the second spring 45 between the end part of the wedge-shaped block of the connecting rod 43 and the pull rod 42 and the first spring 44 between the connecting rod 43 and the supporting rod 25 recover deformation, the snap ring 47 on the supporting rod 25 moves outwards to slide the hook 48 off the matching buckle 46, the telescopic rod 24 at the upper end of the protection frame props the protection frame and the wall-attached frame, meanwhile, the compression springs sleeved outside the sliding rods 27 on the wall-attached frame and the longitudinal beam of the protection frame gradually recover deformation, the cross supports 26 are opened, the upper ladder unit and the lower ladder unit are opened in sequence, and the opening of, the gravity rods 41 sequentially hit the gravity rods 41 of the lower escape units, so that the aluminum alloy folding outdoor escape ladder outside the high-rise building is sequentially opened.

Aluminum alloy folding type outdoor escape ladder is attached to the outer wall of a public house, is arranged on a balcony in a folding state as a falling-proof frame at ordinary times, and can be unfolded to be flexibly used as an escape device when an emergency occurs. The aluminum alloy folding outdoor escape ladder protrudes out of the outer wall of the building.

Example 1

As shown in fig. 3 to 4, the opening mechanism for the aluminum alloy folding outdoor escape ladder is used for a single-climbing aluminum alloy folding outdoor escape ladder, and comprises an integrally formed entrance unit and a ladder stand unit, wherein the entrance unit comprises an entrance attached wall frame 11 and an entrance protective frame 12 corresponding to the entrance attached wall frame 11, the entrance protective frame 12 is fixedly provided with five longitudinal entrance guardrails, and the entrance guardrails are used for protecting evacuees. An inlet wall-attached frame 11 and an inlet protective frame 12 which are far away from one side of the ladder climbing unit are hinged with a foldable upper frame handrail 13, a foldable inlet pedal 14 is hinged between the inlet wall-attached frame 11 and the bottom of the inlet protective frame 12 of the upper frame handrail 13, the upper frame handrail 13 is hinged through hinges at a centering position and forms a pair of four-corner frames by taking the hinges as the center, the inlet pedal 14 is hinged through the hinges at the centering position, and two ends of the inlet pedal are respectively hinged at the bottoms of the inlet wall-attached frame 11 and the inlet protective frame 12, so that the upper frame handrail 13 can be folded when not used, and the space is saved. The upper frame handrail 13 is provided with anti-slip edges or anti-slip lines, so that accidents caused by slipping of the escape personnel in the escape process are reduced.

The ladder stand unit comprises an upper ladder stand unit and a lower ladder stand unit, wherein the upper ladder stand unit is extended along the entering unit, and the lower ladder stand unit is fixedly installed at the bottom of the upper ladder stand unit and matched with the upper ladder stand unit. The climbing ladder unit includes that it attaches wall frame 21 and prolongs in the ascending ladder protective frame 22 of import protective frame 12 to attach the wall frame 11 extension and attach to the ascending ladder on the building along the import, the ascending ladder attaches the position fixed mounting of wall frame 21 centering about with two montants, keep away from the ascending ladder that gets into unit one side and attaches wall frame 21 and montant between fixed mounting have five folding cat ladders 28 on horizontal, the ascending ladder attaches wall frame 21 and the position that ascending ladder protective frame 22 bottom corresponds with last folding cat ladder 28 and articulates there is folding cat ladder footboard 23, cat ladder footboard 23 articulates respectively in last cat ladder wall frame 21 and ascending ladder protective frame 22 bottom through hinge and both ends at centering position. Two folding supports are welded between the top of the upper wall-attached frame 21 and the top of the upper wall-attached frame 22, and the folding supports are telescopic rods 24. The inner sides of the upper ends of the inlet wall-attached frame 11 and the upper wall-attached frame 21 are movably provided with support rods 25. The last ladder that attaches one side relative with last frame handrail 13 has the middle part to rotate the cross support 26 of being connected between articulated between wall frame 21 and the last ladder protective frame 22, and the last ladder that cross support 26 below attaches wall frame 21 and rotates on the last ladder protective frame 22 longeron and installs the slide bar 27 that the cover established the pressure spring, and the last ladder attaches wall frame 21 and goes up to rotate on the ladder protective frame 22 longeron and installs the angle aluminium that the through-hole was seted up in the middle part, and slide bar 27 movable sleeve is in the through-hole of angle aluminium. The upper portion of slide bar 27 cover is equipped with the lantern ring of connecting in cross brace 26 bottom, and after the opening mechanism that flees (being the bracing piece) was opened by the striking, the pressure spring recovered the deformation and upwards extrudeed the lantern ring for cross brace 26 opens, and then makes whole escape device open.

The inlet attaches wall frame 11 and attaches wall frame 21 upper end inboard fixed mounting to join in marriage and detain 46, and bracing piece 25 bottom fixed mounting has the snap ring 47 of cover on joining in marriage to detain 46, and bracing piece 25 overlaps on joining in marriage detaining 46 through snap ring 47, and inlet protective frame 12 and the inboard fixed mounting in upper end of going up the ladder protective frame 22 have the couple 48 of detaining on joining in marriage detaining 46, and the cooperation through couple 48 and joining in marriage detaining 46 realizes whole escape device's folding locking. The gravity rod 41 is worn to be equipped with by the tip that the import attaches wall frame 11 and is close to last frame handrail 13 one end, the import attaches that the inboard of wall frame 11 upper end articulates there is free end cover pull rod 42 on gravity rod 41, the one end fixed mounting that bracing piece 25 is close to gravity rod 41 has first spring 44, escape device is when fold condition, this first spring 44 is in compression state, be provided with connecting rod 43 between first spring 44 and the pull rod 42, the one end and the first spring 44 of connecting rod 43 are connected, the other end fixed mounting of connecting rod 43 has the wedge, set up the draw-in groove with wedge looks adaptation on the pull rod 42. A second spring 45 is arranged between the wedge-shaped block and the pull rod 42, and when the escape device is in the folded state, the second spring 45 is in a compressed state.

The lower crawling ladder unit is fixedly arranged on the upper crawling ladder wall-attached frame 21 and the upper crawling ladder protection frame 22 between the inlet pedal 14 and the crawling ladder pedal 23, can be assembled on the left side or the right side of the bottom of the upper crawling ladder wall-attached frame 21 and the upper crawling ladder protection frame 22, and only needs to follow the gap formed by the inlet pedal 14 and the crawling ladder pedal 23 relatively. The preferred mode is that the lower ladder climbing units are sequentially assembled in the middle or the right side of each escape unit at intervals, so that escape personnel can slowly escape. The lower ladder stand unit comprises a lower ladder stand attaching wall frame 31 fixedly provided with five lower folding ladder stands 34 and a stair protection net 32 corresponding to the lower ladder stand attaching wall frame 31, a foldable lower frame handrail 33 similar to the left side of the inlet unit is hinged between the left and right sides of the lower ladder stand attaching wall frame 31 and the stair protection net 32, and the lower frame handrail 33 is hinged through a hinge at a centering position. The upper ladder unit is propped open under the action of restoring force of a pressure spring on the sliding rod, and the lower ladder unit is driven to prop open. The lower frame handrail 33 is provided with anti-slip ribs or anti-slip lines, so that accidents caused by slipping of the escape personnel in the escape process are reduced.

The end parts of the inlet wall-attached frame 11, the upper ladder wall-attached frame 21 and the lower ladder wall-attached frame 31 are fixedly provided with L-shaped fixing blocks with threaded holes, and the whole outdoor escape device is fixed on a wall body outside a balcony of a high-rise building by inserting proper bolt fasteners into the threaded holes of the fixing blocks.

Example 2

As shown in fig. 5 to 6, the opening mechanism for an aluminum alloy folding outdoor escape ladder is used for a double-climbing aluminum alloy folding outdoor escape ladder, the difference between embodiment 2 and embodiment 1 lies in that two vertical rods are fixedly installed at the positions of the upper-climbing ladder wall-attached frame 21 centered up and down, five transverse folding ladders 28 are fixedly installed between the upper-climbing ladder wall-attached frame 21 and the vertical rods at the left and right sides, the positions of the bottoms of the upper-climbing ladder wall-attached frame 21 and the upper-climbing ladder protective frame 22, which correspond to the folding ladders 28 on any one side of the upper-climbing ladder wall-attached frame 21, are hinged with a folding ladder step pedal 23, the ladder step pedal 23 is hinged with hinges at the centering position, and the two ends of the ladder step pedal are hinged with the bottoms of the upper-climbing ladder wall-. The ladder climbing pedals 23 and the entrance pedals 14 are preferably distributed at the left end and the right end of the whole escape device, so that evacuees entering from the three directions of the entering unit and the two groups of upper folding ladder climbing stairs 28 can enter the lower ladder climbing unit for escape in a short time.

The lower ladder stand unit is fixedly arranged on the upper ladder stand wall-attached frame 21 and the upper ladder stand protective frame 22, the upper ladder stand unit is matched with the lower ladder stand unit, the upper folding ladder stand 28 corresponds to the lower folding ladder stand 34, and the escape personnel can conveniently escape along the lower folding ladder stand 34 in groups after entering the lower ladder stand unit.

When the aluminum alloy folding type outdoor escape ladder is not used, the whole escape device is in a folding state. The whole escape apparatus is fixed to a wall outside a balcony of a high-rise building by inserting appropriate bolt fasteners into fixing blocks outside the entrance parapet frame 11, the upper ladder parapet frame 21 and the lower ladder parapet frame 31. Hooks 48 at the inner sides of the upper ends of the entrance guard frame 12 and the upper-climbing guard frame 22 are hooked on the corresponding buckles 46, and snap rings 47 of the support rods 25 are sleeved on the corresponding buckles 46. The end part of the lower end of the gravity rod 41 in the trigger device does not extend out of the inlet wall-attached frame 11, the wedge-shaped block at the end part of the connecting rod 43 is clamped in the groove of the pull rod 42, the second spring 45 between the end part of the wedge-shaped block of the connecting rod 43 and the pull rod 42 is in a compressed state, the first spring 44 between the connecting rod 43 and the support rod 25 is also in a compressed state, one end of the pull rod 42 is sleeved on the gravity rod 41, and the other end of the pull rod 42 is rotatably installed on the inner side of the upper.

When the aluminum alloy folding type outdoor escape ladder is used, a trigger device entering one side of the unit is firstly started, namely, the gravity rod 41 slides downwards along the inlet wall-attached frame 11 to impact the gravity rod 41 at the next layer, the wedge-shaped block of the connecting rod 43 is pulled out of the pull rod 42, the second spring 45 between the end part of the wedge-shaped block of the connecting rod 43 and the pull rod 42 and the first spring 44 between the connecting rod 43 and the supporting rod 25 recover deformation, the snap ring 47 on the supporting rod 25 moves outwards to slip the hook 48 from the snap ring 46, the inlet protective frame 12 and the upper ladder protective frame 22 slide down, the telescopic rod 24 props the inlet protective frame 12 and the upper ladder protective frame 22 open, the pressure springs sleeved outside the upper slide rods 27 on the wall-attached frame and the protective frame longitudinal beams gradually recover deformation to open the cross supports 26, the inlet wall-attached frame 11 and the inlet protective frame 12 are opened, the lower frame handrails 33 and the inlet pedals 14 on two sides of the lower ladder unit are opened, The ladder step pedals 23 are all opened to complete the opening of the single unit of the aluminum alloy folding type outdoor escape ladder, and the gravity rods 41 sequentially impact the gravity rods 41 of the lower-layer escape units, so that the double-climbing type aluminum alloy folding type outdoor escape ladder outside the high-rise building is sequentially opened. Wherein the single-climbing aluminum alloy folding outdoor escape ladder can contain two persons at a time to enter the escape device, the person needing rest can rest on the inlet pedal 14 and the ladder step pedal 23, and the unconscious evacuees enter a group of lower folding ladder stands 34 in the lower ladder stand unit along the gap between the inlet pedal 14 and the ladder step pedal 23 to escape downwards in sequence. The double-climbing type aluminum alloy folding outdoor escape ladder can contain three persons once and enter the escape device, the persons needing to have a rest can have a rest on the inlet pedal 14 and the ladder step pedal 23, and the unconscious evacuees enter the two groups of lower folding ladder stands 34 in the lower ladder stand unit along the gap between the inlet pedal 14 and the ladder step pedal 23 to escape downwards in sequence. For the double-climbing type aluminum alloy folding outdoor escape ladder, if the number of the personnel in the escape device is small, the fastest escape personnel can directly climb downwards along the upper folding crawling ladder 28 and the lower folding crawling ladder 34 in the middle in sequence, the escape speed is high, and the escape efficiency of the whole device is high.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims (5)

1. The utility model provides an outdoor emergency ladder of aluminum alloy folded form is with opening mechanism, a serial communication port, including movable mounting attach wall frame upper end inboard bracing piece and fixed mounting attach the inboard joining in marriage of wall frame upper end and detain, bracing piece bottom fixed mounting has the snap ring of cover on joining in marriage the knot, the inboard fixed mounting of protection frame has the couple of cover on joining in marriage the knot, it wears to be equipped with the gravity pole to attach wall frame tip, it has the pull rod of free end cover on the gravity pole to attach wall frame upper end inboard articulated, the one end fixed mounting that the bracing piece is close to the gravity pole has first spring, be provided with the connecting rod between first spring and the pull rod, the one end and the first spring coupling of connecting rod, the other end fixed mounting of connecting rod has the wedge, set up the draw-in groove with wedge looks adaptation on the pull.

2. The opening mechanism for an outdoor escape ladder of aluminum alloy folding type as claimed in claim 1, wherein a baffle plate with a through hole and allowing the support rod to conveniently penetrate out is fixedly installed on the inner side of the upper end of the wall-attached frame, the end of the support rod is connected with the end of the connecting rod through connecting blocks of which both ends are L-shaped, and the first spring on the support rod is limited between the connecting blocks and the baffle plate.

3. The opening mechanism for an aluminum alloy folding type outdoor escape ladder as claimed in claim 2, wherein a slider having a through hole and facilitating penetration of the connecting rod is also fixedly installed on the wall-attached frame at the connecting rod.

4. The opening mechanism for an outdoor escape ladder of aluminum alloy folding type as claimed in claim 3, wherein the upper end of the gravity rod is integrally formed with a stopper for preventing the gravity rod from slipping.

5. The opening mechanism for an outdoor escape ladder of aluminum alloy folding type as claimed in claim 4, wherein the pull rod is V-shaped and the end portion thereof is hinged to the inside of the upper end of the wall-attached frame, one free end of the pull rod is sleeved on the gravity rod through a collar, and the other free end thereof abuts against the inner wall of the wall-attached frame.

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