CN112459370B

CN112459370B - Attic staircase with buffer function

Info

Publication number: CN112459370B
Application number: CN202011441324.0A
Authority: CN
Inventors: 伍艳
Original assignee: Wenzhou Bosi Furniture Technology Co ltd
Current assignee: Wenzhou Bosi Furniture Technology Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2022-06-21
Anticipated expiration: 2040-12-08
Also published as: CN112459370A

Abstract

The invention relates to the technical field of attic escalators, in particular to an attic escalator with a buffering function, which comprises an installation frame, an escalator structure, a fixing structure, a placing structure, a sealing structure and a buffering structure, wherein the installation frame is provided with a first installation frame and a second installation frame; can the person of facilitating the use carry out the climbing of loft through the staircase structure, convenient storage and taking simultaneously, can make the flexible process of staircase structure more reliable and more stable through fixed knot constructs, guarantee the stability in the device course of operation, can cushion the flexible in-process of staircase structure through buffer structure, avoid causing the damage because of the slip speed is too big to the device, can deposit article such as slippers temporarily through placing the structure, conveniently carry out the work in the loft, can seal the installing frame fast through the enclosed construction, thereby reach and carry out confined effect to the loft.

Description

Attic staircase with buffer function

Technical Field

The invention relates to the technical field of attic escalators, in particular to an attic escalator with a buffering function.

Background

An attic refers to a room located below the pitched roof of a house. For example, the space of a top floor, or a high complex with the space in a building being more than 4 meters, or a bottom dealer, the space of an office building with dual purposes like business and living reaches more than 4 meters, the space of a LOFT building reaches 4.8 meters, the herringbone top space of the building is also very high, generally reaches more than 4 meters, the space of the bottom dealer reaching 4.2 meters can be made into an attic, the high space like a villa can be made into a first attic and a second terrace, and the attic can be utilized on the top, so that the storage, the working, the people holding, or the shooting of a studio and the attic is the best private space.

In some architectural designs, in order to reach whole pleasing to the eye effect, can seal the loft sometimes for need be comparatively inconvenient with the help of the ladder when passing in and out the loft, simultaneously when using the staircase, traditional staircase need support with the help of other objects, the inconvenient climbing of loft that carries on.

Disclosure of Invention

The invention provides an attic escalator with a buffering function, aiming at the problems in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: concrete have buffer function's loft staircase, including installing frame, staircase structure, fixed knot construct, place structure, enclosed construction and buffer structure for support and install wholly the top side of installing frame is equipped with and is used for climbing, convenient accomodating simultaneously the staircase structure, be equipped with in the staircase structure and make the staircase structure is more stable at the during operation fixed knot construct, one side of staircase structure is equipped with and is used for carrying on article such as shoes and places temporarily place the structure of placing, the top side of installing frame is equipped with and is used for right the installing frame seals, convenient operation the enclosed construction, the both sides of staircase structure are equipped with right the flexible in-process of staircase structure cushions structure.

Specifically, the staircase structure includes escalator frame, first extension ladder, second extension ladder, pivot, turning block and first spring, one side sliding connection of escalator frame has two the turning block, one side of turning block with fixedly connected with between the escalator frame first spring, one side of installing frame is equipped with two the pivot, the one end of turning block is passed through the homonymy setting the pivot with the installing frame rotates to be connected, the opposite side sliding connection of escalator frame has first extension ladder, the top side sliding connection of first extension ladder has the second extension ladder.

Specifically, the fixing structure comprises a clamping rod, a second spring, a first clamping groove, a clamping block, a third spring and a second clamping groove, the two sides of the first extension ladder are respectively and slidably connected with the clamping block, one side of the clamping block is of an inclined plane structure, the second clamping groove is respectively formed in the two sides of the escalator frame, one end of the clamping block is clamped with the escalator frame through the second clamping groove formed in the same side, the other end of the clamping block is fixedly connected with the third spring between the first extension ladder, the two ends of the second extension ladder are respectively and slidably connected with the clamping rod, the clamping rod is fixedly connected with the second spring between the second extension ladder, the first clamping groove is formed in the side surface of the first extension ladder, and one end of the clamping rod is clamped with the first extension ladder through the first clamping groove.

Specifically, buffer structure includes gas pocket, compression chamber, second slide bar, blotter, sealing washer and sixth spring, the both sides of escalator frame are inside to be seted up respectively the compression chamber, the both sides of escalator frame sliding connection respectively have the second slide bar, the bottom side fixedly connected with of second slide bar the sealing washer, the sealing washer passes through the compression chamber with sliding connection between the escalator frame, the bottom of second slide bar with fixedly connected with between the escalator frame the sixth spring, the top fixedly connected with of second slide bar the blotter, the both sides of escalator frame have been seted up respectively the gas pocket, just the one end of gas pocket with the compression chamber is linked together.

Specifically, place the structure and include first slide bar, locating piece, place board, first torsional spring, fourth spring and constant head tank, the inboard sliding connection of escalator frame has first slide bar, the one end of first slide bar rotates to be connected with place the board, just place the board with fixedly connected with between the first slide bar first torsional spring, the side of first slide bar has been seted up a plurality ofly the constant head tank, one side of first slide bar is equipped with the locating piece, the locating piece with sliding connection between the escalator frame, the bottom of locating piece with fixedly connected with between the escalator frame the fourth spring, the side of locating piece is through one the constant head tank with first slide bar block mutually with.

Specifically, the closed structure comprises a partition plate, a guide strip, a sliding column, a guide groove, a triangular block, a second torsion spring, a sliding block and a fifth spring, the side of the mounting frame, which is far away from the rotating shaft, is provided with the guide groove, the top side of the mounting frame is provided with the clapboard, the two sides of the partition board are respectively fixedly connected with the sliding columns which are connected with the mounting frame in a sliding way through the guide grooves, one side of the mounting frame is connected with the sliding block in a sliding way through the guide groove, one end of the sliding block is of an inclined surface structure, the fifth spring is fixedly connected between the other end of the sliding block and the mounting frame, the guide strip is connected on the inner side of the mounting frame in a sliding manner, the tip symmetry of gib block is equipped with two three hornblocks, three hornblocks with the gib block rotates to be connected, just three hornblocks with fixedly connected with between the gib block the second torsional spring.

The invention has the beneficial effects that:

(1) according to the attic staircase with the buffering function, a user can conveniently climb an attic through the staircase structure, the attic staircase is convenient to store and take, the stretching process of the staircase structure can be more stable and reliable through the fixing structure, the stability of the device in the working process is ensured, the staircase structure can be buffered through the buffering structure in the stretching process, and the device is prevented from being damaged due to overlarge sliding speed; namely: firstly, when the escalator is taken, the whole escalator frame needs to be slid, so that the rotating block slides in the escalator frame, the other end of the escalator frame can be screwed out from the inside of the mounting frame, the escalator frame is directly rotated until the escalator frame rotates to a vertical state, then the first extension ladder and the second extension ladder are sequentially slid to unfold the whole extension ladder for climbing the attic, the escalator is convenient to take and use, in the unfolding process of the first extension ladder and the second extension ladder, the first extension ladder and the escalator frame are clamped through the clamping block, at the moment, a user needs to press the clamping rod at the bottom end of the second extension ladder, the clamping state between the first extension ladder and the second extension ladder is released, then the second extension ladder is slid until two sides of the second extension ladder extrude the inclined plane side of the clamping block, and the clamping block is pushed to slide out of the clamping groove from the second extension ladder, at this moment, the block state between first extension ladder and the staircase frame is relieved, the user can accomplish the holistic extension of staircase, the orderly expansion of staircase has been guaranteed, convenience and practicality, avoid breaking down, and when taking place to slide between first extension ladder and staircase frame, because the extension ladder wholly has certain quality, when first extension ladder slides down, the handrail frame may be damaged to the fast speed, and the both sides of handrail frame are equipped with the compression chamber respectively, when first extension ladder slides to contradict with the blotter, second slide bar atress takes place to slide and compresses the sixth spring, thereby play the buffering effect, the sealing washer has guaranteed that the air in the compression chamber only can be discharged by the gas pocket simultaneously, and the gas pocket diameter is less, the speed of exhaust air is slower, thereby further strengthened the buffering effect when gliding to first extension ladder, whole protection to the device.

(2) The attic staircase with the buffering function can temporarily store articles such as slippers and the like through the placing structure, so that the attic staircase can conveniently work in an attic; namely: after the user passes through flexible staircase structure and gets into the loft, in order to carry out interim depositing to articles such as slippers, the user can press the locating piece of staircase frame both sides simultaneously for the side of locating piece breaks away from the constant head tank of first slide bar side, pulls out first slide bar completely, under the effect of first torsional spring, places the board and rotates to the horizontality, is used for carrying out interim depositing to article, guarantees the cleanness in room, avoids the dust in the loft to cause the pollution.

(3) The attic staircase with the buffering function can quickly seal the installation frame through the sealing structure, so that the attic is sealed; namely: accomplish the use back of staircase, after personnel leave, the user need place the shrink staircase whole in the installing frame top, then for holistic pleasing to the eye and to the closure of loft, the user needs the sliding diaphragm, make the traveller of baffle side slide along the guide way, when the traveller slides to the slider department of one side, because the inclined plane structure of slider tip can play the guide effect to the traveller, make the baffle play to the installing frame sealing effect simultaneously, and when opening, the slip of baffle can make the traveller of both sides promote the gib block roll-off, slide to the baffle leads to and supports, two triangle blocks of gib block tip can keep the block relation with the homonymy traveller under the effect of second torsional spring simultaneously, make the gib block move along with the baffle, guarantee the supporting effect.

Drawings

The invention is further illustrated by the following examples in conjunction with the drawings.

Fig. 1 is a schematic structural view of the overall structure of a preferred embodiment of the attic escalator with a buffering function according to the present invention;

FIG. 2 is a schematic view of the connection of the escalator structure and the placement structure shown in FIG. 1;

fig. 3 is a schematic view of a connection structure of the escalator structure and the fixed structure shown in fig. 1;

FIG. 4 is an enlarged view of the structure A shown in FIG. 3;

FIG. 5 is a schematic view of the attachment of the mounting frame and enclosure shown in FIG. 1;

fig. 6 is a schematic structural view of the closed structure shown in fig. 1.

In the figure: 1. the escalator comprises a mounting frame, 2, an escalator structure, 21, an escalator frame, 22, a first extension ladder, 23, a second extension ladder, 24, a rotating shaft, 25, a rotating block, 26, a first spring, 3, a fixed structure, 31, a clamping rod, 32, a second spring, 33, a first clamping groove, 34, a clamping block, 35, a third spring, 36, a second clamping groove, 4, a placing structure, 41, a first sliding rod, 42, a positioning block, 43, a placing plate, 44, a first torsion spring, 45, a fourth spring, 46, a positioning groove, 5, a closed structure, 51, a partition plate, 52, a guide strip, 53, a sliding column, 54, a guide groove, 55, a triangular block, 56, a second torsion spring, 57, a sliding block, 58, a fifth spring, 6, a buffer structure, 61, an air hole, 62, a compression cavity, 63, a second sliding rod, 64, a buffer cushion, 65, a sealing ring, 66 and a sixth spring.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 6, the attic ladder with a buffering function according to the present invention includes a mounting frame 1, a ladder structure 2, a fixing structure 3, a placing structure 4, a closing structure 5 and a buffering structure 6, the top side of the mounting frame 1 for supporting and mounting the whole structure is provided with a climbing device, meanwhile, the staircase structure 2 is convenient to store, the fixed structure 3 which enables the staircase structure 2 to be more stable in work is arranged in the staircase structure 2, the placing structure 4 for temporarily placing articles such as shoes is arranged at one side of the staircase structure 2, the top side of the mounting frame 1 is provided with the sealing structure 5 which is used for sealing the mounting frame 1 and is convenient to operate, and the two sides of the escalator structure 2 are provided with the buffer structures 6 for buffering the escalator structure 2 in the telescopic process.

Specifically, the escalator structure 2 includes an escalator frame 21, a first extension ladder 22, a second extension ladder 23, a rotating shaft 24, a rotating block 25 and a first spring 26, wherein two rotating blocks 25 are slidably connected to one side of the escalator frame 21, the first spring 26 is fixedly connected between one side of each rotating block 25 and the escalator frame 21, two rotating shafts 24 are arranged on one side of the mounting frame 1, one end of each rotating block 25 is rotatably connected to the mounting frame 1 through the rotating shaft 24 arranged on the same side, the first extension ladder 22 is slidably connected to the other side of the escalator frame 21, the second extension ladder 23 is slidably connected to the top side of the first extension ladder 22, firstly, when the escalator is taken, the whole escalator frame 21 needs to be slid, so that the rotating block 25 slides inside the escalator frame 21, and the other end of the escalator frame 21 can be screwed out from the inside of the mounting frame 1, at this moment, the escalator frame 21 is directly rotated until the escalator frame 21 is rotated to a vertical state, and then the first extension ladder 22 and the second extension ladder 23 are sequentially slid to integrally unfold the extension ladder for climbing an attic, so that the escalator is conveniently taken.

Specifically, the fixed structure 3 includes a clamping rod 31, a second spring 32, a first clamping groove 33, a clamping block 34, a third spring 35 and a second clamping groove 36, two sides of the first extension ladder 22 are respectively connected with one clamping block 34 in a sliding manner, one side of the clamping block 34 is in an inclined plane structure, two sides of the escalator frame 21 are respectively provided with the second clamping groove 36, one end of the clamping block 34 is clamped with the escalator frame 21 through the second clamping groove 36 arranged at the same side, the third spring 35 is fixedly connected between the other end of the clamping block 34 and the first extension ladder 22, two ends of the second extension ladder 23 are respectively connected with the clamping rod 31 in a sliding manner, the second spring 32 is fixedly connected between the clamping rod 31 and the second extension ladder 23, a side surface of the first extension ladder 22 is provided with the first clamping groove 33, one end of the clamping rod 31 is clamped with the first extension ladder 22 through the first clamping groove 33, in the expanding process of the first extension ladder 22 and the second extension ladder 23, the first extension ladder 22 and the escalator frame 21 are clamped through the clamping block 34, at the moment, a user needs to press the clamping rod 31 positioned at the bottom end of the second extension ladder 23 to remove the clamping state between the first extension ladder 22 and the second extension ladder 23, then the second extension ladder 23 is slid until the two sides of the second extension ladder 23 extrude the inclined plane side of the clamping block 34, so that the clamping block 34 is pushed to slide out of the second clamping groove 36, at the moment, the clamping state between the first extension ladder 22 and the escalator frame 21 is removed, the user can complete the integral extension of the escalator, the orderly expansion of the escalator is ensured, the escalator is convenient and practical, and the occurrence of faults is avoided.

Specifically, the buffer structure 6 includes an air hole 61, a compression chamber 62, a second slide bar 63, a cushion pad 64, a seal ring 65 and a sixth spring 66, the compression chamber 62 is respectively disposed inside two sides of the escalator frame 21, the second slide bar 63 is respectively slidably connected to two sides of the escalator frame 21, the seal ring 65 is fixedly connected to a side surface of a bottom end of the second slide bar 63, the seal ring 65 is slidably connected to the escalator frame 21 through the compression chamber 62, the sixth spring 66 is fixedly connected between a bottom end of the second slide bar 63 and the escalator frame 21, the cushion pad 64 is fixedly connected to a top end of the second slide bar 63, the air hole 61 is respectively disposed on two sides of the escalator frame 21, and one end of the air hole 61 is communicated with the compression chamber 62, when the first extension ladder 22 slides relative to the escalator frame 21, because the whole extension ladder has certain mass, when the first extension ladder 22 slides down, the escalator frame 21 may be damaged at a higher speed, and the compression chambers 62 are respectively arranged on both sides of the escalator frame 21, when the first extension ladder 22 slides to be in collision with the buffer pads 654, the second slide bar 63 is stressed to slide and compress the sixth springs 66, so that the buffer effect is achieved, meanwhile, the sealing ring 65 ensures that air in the compression chambers 62 can only be discharged from the air holes 61, the diameters of the air holes 61 are smaller, and the speed of discharging air is slower, so that the buffer effect when the first extension ladder 22 slides down is further enhanced, and the protection is integrally formed on the device.

Specifically, the placing structure 4 includes a first slide bar 41, a positioning block 42, a placing plate 43, a first torsion spring 44, a fourth spring 45 and a positioning groove 46, the first slide bar 41 is slidably connected to the inner side of the escalator frame 21, one end of the first slide bar 41 is rotatably connected to the placing plate 43, the first torsion spring 44 is fixedly connected between the placing plate 43 and the first slide bar 41, the positioning groove 46 is formed in the side surface of the first slide bar 41, the positioning block 42 is arranged on one side of the first slide bar 41, the positioning block 42 is slidably connected to the escalator frame 21, the fourth spring 45 is fixedly connected between the bottom end of the positioning block 42 and the escalator frame 21, the side surface of the positioning block 42 is engaged with the first slide bar 41 through one of the positioning grooves 46, and after a user enters an attic through the telescopic structure, in order to temporarily store articles such as slippers, a user can simultaneously press the positioning blocks 42 on two sides of the escalator frame 21, so that the side surfaces of the positioning blocks 42 are separated from the positioning grooves 46 on the side surfaces of the first sliding rods 41, the first sliding rods 41 are completely pulled out, and under the action of the first torsion springs 44, the placing plate 43 rotates to be in a horizontal state for temporarily storing the articles, thereby ensuring the cleanness of a room and avoiding the pollution caused by dust in an attic.

Specifically, the closed structure 5 includes a partition plate 51, a guide strip 52, a sliding column 53, a guide groove 54, triangular blocks 55, a second torsion spring 56, a slider 57 and a fifth spring 58, the guide groove 54 is disposed on one side of the installation frame 1 departing from the rotating shaft 24, the partition plate 51 is disposed on the top side of the installation frame 1, the sliding column 53 is fixedly connected to two sides of the partition plate 51 respectively, the sliding column 53 is slidably connected to the installation frame 1 through the guide groove 54, the slider 57 is slidably connected to one side of the installation frame 1 through the guide groove 54, one end of the slider 57 is of an inclined plane structure, the other end of the slider 57 is fixedly connected to the fifth spring 58 between the installation frame 1, the guide strip 52 is slidably connected to the inner side of the installation frame 1, and two triangular blocks 55 are symmetrically disposed on the end of the guide strip 52, the triangular block 55 is rotatably connected with the guide strip 52, the second torsion spring 56 is fixedly connected between the triangular block 55 and the guide strip 52, after the escalator is used, after a person leaves, the user needs to integrally place the contracted escalator at the top of the installation frame 1, and then the user needs to slide the partition plate 51 for integral beauty and closing of the attic, so that the sliding column 53 on the side surface of the partition plate 51 slides along the guide groove 54, when the sliding column 53 slides to the sliding block 57 on one side, because the inclined surface structure at the end part of the sliding block 57 can guide the sliding column 53, the partition plate 51 can seal the installation frame 1, and when the escalator is opened, the sliding of the partition plate 51 can enable the sliding columns 53 on the two sides to push the guide strip 52 to slide out, so as to guide and support the sliding of the partition plate 51, meanwhile, the two triangular blocks 55 at the end of the guide bar 52 can keep the clamping relationship with the sliding column 53 at the same side under the action of the second torsion spring 56, so that the guide bar 52 moves along with the partition plate 51, and the supporting effect is ensured.

When the escalator is used, firstly, when the escalator is taken, the whole escalator frame 21 needs to be slid, so that the rotating block 25 slides in the escalator frame 21, the other end of the escalator frame 21 can be screwed out from the inside of the installation frame 1, at the moment, the escalator frame 21 is directly rotated until the escalator frame 21 rotates to be in a vertical state, then the whole escalator can be unfolded by sequentially sliding the first extension ladder 22 and the second extension ladder 23 for climbing an attic, the taking of the escalator is convenient, in the unfolding process of the first extension ladder 22 and the second extension ladder 23, the first extension ladder 22 and the escalator frame 21 are clamped through the clamping block 34, at the moment, a user needs to press the clamping rod 31 at the bottom end of the second extension ladder 23 to release the clamping state between the first extension ladder 22 and the second extension ladder 23, then the second extension ladder 23 is slid until the two sides of the second extension ladder 23 extrude the inclined plane side of the clamping block 34, thereby pushing the clamping block 34 to slide out of the second clamping groove 36, at this time, the clamping state between the first extension ladder 22 and the ladder frame 21 is released, the user can complete the extension of the whole ladder, ensuring the orderly expansion of the ladder, being convenient and practical, avoiding the occurrence of faults, and when the first extension ladder 22 slides with the ladder frame 21, because the whole extension ladder has a certain mass, when the first extension ladder 22 slides down, the ladder frame 21 may be damaged at a higher speed, and the two sides of the ladder frame 21 are respectively provided with the compression cavities 62, when the first extension ladder 22 slides to be in contact with the buffer pads 654, the second slide bar 63 is stressed to slide and compress the sixth spring 66, thereby playing a buffering effect, and simultaneously the sealing ring 65 ensures that the air in the compression cavities 62 can only be discharged from the air holes 61, and the diameter of the air holes 61 is smaller, the speed of discharging the air is slower, thereby further enhancing the buffering effect when the first extension ladder 22 slides down, the device is integrally protected, after a user enters an attic through a telescopic staircase structure, in order to temporarily store articles such as slippers and the like, the user can simultaneously press the positioning blocks 42 on the two sides of the escalator frame 21 to enable the side surfaces of the positioning blocks 42 to be separated from the positioning grooves 46 on the side surfaces of the first slide bars 41 and completely pull out the first slide bars 41, under the action of the first torsion springs 44, the placing plate 43 is rotated to be in a horizontal state for temporarily storing the articles, the cleanness of a room is ensured, the pollution caused by dust in the attic is avoided, after the escalator is used, after the user leaves, the user needs to integrally place the telescopic staircase on the top of the mounting frame 1, then for the integral attractiveness and the sealing of the attic, the user needs to slide the partition plate 51 to enable the slide columns 53 on the side surfaces of the partition plate 51 to slide along the guide grooves 54, when the slide columns 53 slide to the slide blocks 57 on one side, because the inclined plane structure of slider 57 tip can play the guide effect to traveller 53, make baffle 51 play the sealed effect to installing frame 1 simultaneously, and when opening, the slip of baffle 51 can make the traveller 53 of both sides promote the gib block 52 roll-off, lead and support the slip of baffle 51, two triangle-shaped blocks 55 of gib block 52 tip can keep the block relation with homonymy traveller 53 under the effect of second torsional spring 56 simultaneously, make gib block 52 move along with baffle 51 is expert, guarantee the supporting effect.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. Concrete loft staircase that has buffer function, its characterized in that, including installing frame (1), staircase structure (2), fixed knot constructs (3), places structure (4), enclosed construction (5) and buffer structure (6), be used for wholly supporting the structure and installing the top side of installing frame (1) is equipped with and is used for climbing, simultaneously convenient accomodating staircase structure (2), be equipped with in staircase structure (2) and make staircase structure (2) are more stable at the during operation fixed knot constructs (3), one side of staircase structure (2) is equipped with and is used for carrying on article such as shoes and place temporarily place structure (4), the top side of installing frame (1) be equipped with be used for right installing frame (1) seals, convenient operation enclosed construction (5), the both sides of staircase structure (2) are equipped with right the flexible in-process of staircase structure (2) cushions structure (6) (ii) a

The escalator structure (2) comprises an escalator frame (21), a first extension ladder (22), a second extension ladder (23), a rotating shaft (24), rotating blocks (25) and a first spring (26), wherein one side of the escalator frame (21) is connected with the two rotating blocks (25) in a sliding mode, the first spring (26) is fixedly connected between one side of each rotating block (25) and the escalator frame (21), the two rotating shafts (24) are arranged on one side of the mounting frame (1), one end of each rotating block (25) is rotatably connected with the mounting frame (1) through the rotating shaft (24) arranged on the same side, the first extension ladder (22) is connected to the other side of the escalator frame (21) in a sliding mode, and the second extension ladder (23) is connected to the top side of the first extension ladder (22) in a sliding mode;

the fixing structure (3) comprises a clamping rod (31), a second spring (32), a first clamping groove (33), a clamping block (34), a third spring (35) and a second clamping groove (36), two sides of the first extension ladder (22) are respectively connected with one clamping block (34) in a sliding mode, one side of each clamping block (34) is of an inclined plane structure, two sides of the escalator frame (21) are respectively provided with the second clamping groove (36), one end of each clamping block (34) is clamped with the escalator frame (21) through the second clamping groove (36) formed in the same side, the third spring (35) is fixedly connected between the other end of each clamping block (34) and the first extension ladder (22), two ends of the second extension ladder (23) are respectively connected with the clamping rod (31) in a sliding mode, the second spring (32) is fixedly connected between the clamping rod (31) and the second extension ladder (23), the first clamping groove (33) is formed in the side face of the first extension ladder (22), and one end of the clamping rod (31) is clamped with the first extension ladder (22) through the first clamping groove (33);

the buffer structure (6) comprises an air hole (61), a compression chamber (62), a second sliding rod (63), a buffer pad (64), a sealing ring (65) and a sixth spring (66), the compression chamber (62) is respectively arranged inside two sides of the escalator frame (21), the two sides of the escalator frame (21) are respectively connected with the second sliding rod (63) in a sliding manner, the sealing ring (65) is fixedly connected with the bottom end side face of the second sliding rod (63), the sealing ring (65) is connected with the escalator frame (21) in a sliding manner through the compression chamber (62), the sixth spring (66) is fixedly connected between the bottom end of the second sliding rod (63) and the escalator frame (21), the buffer pad (64) is fixedly connected with the top end of the second sliding rod (63), the air hole (61) is respectively arranged on two sides of the escalator frame (21), one end of the air hole (61) is communicated with the compression cavity (62);

the placement structure (4) comprises a first sliding rod (41), a positioning block (42), a placement plate (43), a first torsion spring (44), a fourth spring (45) and a positioning groove (46), the inner side of the escalator frame (21) is connected with the first sliding rod (41) in a sliding manner, one end of the first sliding rod (41) is connected with the placement plate (43) in a rotating manner, the placement plate (43) is fixedly connected with the first torsion spring (44) between the first sliding rod (41), the positioning groove (46) is formed in the side face of the first sliding rod (41), the positioning block (42) is arranged on one side of the first sliding rod (41), the positioning block (42) is connected with the escalator frame (21) in a sliding manner, the bottom end of the positioning block (42) is fixedly connected with the fourth spring (45) between the escalator frame (21), and the side face of the positioning block (42) is connected with the first sliding rod (41) through the positioning groove (46) Clamping;

the closed structure (5) comprises a partition plate (51), a guide strip (52), a sliding column (53), a guide groove (54), a triangular block (55), a second torsion spring (56), a sliding block (57) and a fifth spring (58), wherein the guide groove (54) is formed in one side of the installation frame (1) deviating from the rotating shaft (24), the partition plate (51) is arranged on the top side of the installation frame (1), the sliding column (53) is fixedly connected to two sides of the partition plate (51) respectively, the sliding column (53) is in sliding connection with the installation frame (1) through the guide groove (54), the sliding block (57) is connected to one side of the installation frame (1) through the guide groove (54), one end of the sliding block (57) is of an inclined plane structure, the other end of the sliding block (57) is fixedly connected with the fifth spring (58) between the installation frame (1), the guide strip (52) is connected to the inner side of the mounting frame (1) in a sliding mode, two triangular blocks (55) are symmetrically arranged at the end portion of the guide strip (52), the triangular blocks (55) are rotatably connected with the guide strip (52), and a second torsion spring (56) is fixedly connected between each triangular block (55) and the corresponding guide strip (52); the whole escalator frame is slid, so that the rotating block slides in the escalator frame, the other end of the escalator frame can be screwed out from the inside of the mounting frame, the escalator frame is directly rotated until the escalator frame rotates to a vertical state, then the first extension ladder and the second extension ladder are sequentially slid to integrally unfold the extension ladder for climbing the attic, in the unfolding process of the first extension ladder and the second extension ladder, the first extension ladder and the escalator frame are clamped through the clamping block, at the moment, the clamping rod at the bottom end of the second extension ladder is pressed to release the clamping state between the first extension ladder and the second extension ladder, then the second extension ladder is slid until the two sides of the second extension ladder extrude the inclined plane side of the clamping block, so that the clamping block is pushed to slide out from the second clamping groove, at the moment, the clamping state between the first extension ladder and the escalator frame is released, and the whole extension of the escalator can be completed, when the first extension ladder slides to be abutted against the cushion pad, the second slide bar is stressed to slide and compress the sixth spring, so that a buffering effect is achieved, meanwhile, the sealing ring ensures that air in the compression cavity can be discharged only through the air hole, meanwhile, the positioning blocks on the two sides of the ladder frame are pressed, so that the side faces of the positioning blocks are separated from the positioning grooves on the side faces of the first slide bar, the first slide bar is completely pulled out, and under the action of the first torsion spring, the placing plate rotates to be in a horizontal state and is used for temporarily storing articles; the sliding partition plate, make the traveller of baffle side slide along the guide way, when the traveller slides to the slider department of one side, the inclined plane structure of slider tip plays the guide effect to the traveller, make the baffle play to the installing frame sealing effect simultaneously, when opening, the slip of baffle makes the traveller of both sides promote the gib block roll-off, lead to and support the slip of baffle, two three hornblocks of gib block tip keep under the effect of second torsional spring with the block relation of homonymy traveller simultaneously.