Construction scaffold and construction method

Abstract

The present invention discloses a construction scaffold, comprising: a frame system; a guiding and unloading system, which includes a pair of guide rails spaced on the side of the frame system against the wall, and attachment supports are provided between the pair of guide rails and the floor slabs of other floors except the corresponding lowest floor; an anti-falling system, which includes a base detachably connected to the lowermost guide wheel, a first support plate supported on the base by a cylinder, a second support plate elastically provided on the first support plate, and an airbag covered with the second support plate as the bottom, wherein at least one one-way valve communicating with the airbag is provided on the second support plate, and when there is no external pressure, the one-way valve is closed; a lifting system, which is provided between the frame system and the floor slab of one of the floors and is used to lift the frame system. A construction method of a construction scaffold. The present invention has the beneficial effect of preventing falling while solving the problem of inconvenient height adjustment.

Description

Technical Field

[0001] The present invention relates to the technical field of construction equipment. More specifically, the present invention relates to a construction scaffold and a construction method. Background Art

[0002] During the construction process, a construction scaffold is needed to increase the working height of construction workers. Currently, the commonly used one is the scaffolding. Among them, the attached lifting scaffold refers to a scaffold erected to a certain height and attached to the engineering structure. Relying on its own lifting equipment and devices, it can climb or descend layer by layer with the engineering structure, turning high-altitude operations into low-altitude operations and suspended operations into operations inside the scaffold body. It has significant low-carbon characteristics, high-tech content, and is more economical, safer, and more convenient, etc., and is widely used, especially suitable for high-rise buildings.

[0003] Currently, the attached lifting scaffold usually includes a scaffold body system, an attachment guiding, load unloading and anti-falling system, a lifting system and a control system. The attachment guiding, load unloading and anti-falling system usually includes a guide rail and an attached wall support. A load unloading support is arranged in cooperation with the attached wall support. The load unloading support cooperates with an anti-falling stop rod on the guide rail to achieve anti-falling. It has the problem that the guide rail can only run unidirectionally along the wall and the height adjustment is inconvenient. The application number is 2020116085236, and the name is an anti-falling device for an attached lifting scaffold. When descending slowly, the trigger end in the initial state is inserted into the window and can rotate and reset with the up and down movement of the guide rail to achieve normal height adjustment; when descending rapidly, due to friction and downward impact force, the trigger end will rotate towards the ground direction, thereby pushing the movable end to rotate into the first interval and approaching the second fixed part, so as to fixedly clamp the flange plate of the guide rail between the movable end and the second fixed part to prevent the guide rail from falling; although it solves the problem that the guide rail can only run unidirectionally along the wall and the height adjustment is inconvenient, there are relatively large uncontrollable factors relying on the control of the speed magnitude and the persistence of friction. How to design an attached lifting scaffold to controllably improve the anti-falling effect on the basis of solving the problems that the guide rail can only run unidirectionally along the wall and the height adjustment is inconvenient is an urgent problem to be solved at present. Summary of the Invention

[0004] An object of the present invention is to solve at least the above problems and provide at least the advantages described later.

[0005] To achieve these and other advantages in accordance with the present invention, there is provided a construction scaffold, comprising:

[0006] A scaffold body system;

[0007] The guiding and unloading system includes a pair of guide rails spaced on the side of the frame system adjacent to the wall. The bottom ends of the guide rails extend downward relative to the frame system for two floors. Wall-mounted supports are provided between the pair of guide rails and the floor slabs of other floors except the corresponding bottommost floor. A pair of guide wheels are detachably provided at the end of the wall-mounted support close to the guide rail, and the pair of guide wheels are slidably connected to the corresponding guide rail.

[0008] The anti-falling system includes a base detachably connected to the lowermost guide wheel, a first support plate supported on the base by a cylinder, a second support plate elastically provided on the first support plate, and an airbag covered with the second support plate as the bottom. Wherein, at least one one-way valve communicating with the airbag is provided on the second support plate, and when there is no external pressure, the one-way valve is closed.

[0009] The lifting system is provided between the frame system and the floor slab of one of the floors and is used to lift the frame system.

[0010] Preferably, the base extends upward circumferentially to form a box body, and a plurality of cylinders are arranged in a matrix in the box body, and the telescopic ends of the plurality of cylinders hermetically pass through the top end of the box body.

[0011] A plurality of elastic telescopic rods are arranged in a matrix between the first support plate and the second support plate. Each elastic telescopic rod includes an outer cylinder vertically fixed on the first support plate, an inner cylinder slidably arranged in the outer cylinder, and a spring elastically supported between the inner cylinder and the outer cylinder. The second support plate is supported on the tops of the plurality of inner cylinders.

[0012] Preferably, the lifting system includes a pair of upper and lower load-bearing beams. The pair of upper and lower load-bearing beams correspond to the pair of guide rails respectively. Each pair of upper and lower load-bearing beams includes an upper load-bearing beam and a lower load-bearing beam arranged in the frame system with a two-floor interval up and down. Matching each pair of upper and lower load-bearing beams includes:

[0013] A lifting hanging seat, which is fixed on the wall and has a height matching that of the upper load-bearing beam;

[0014] An electric hoist, which is fixed on the upper load-bearing beam;

[0015] A steel wire rope, one end of which is fixed on the lifting hanging seat, and the other end bypasses the lower load-bearing beam and is hooked to the electric hoist.

[0016] Preferably, the horizontal projection of the anti-falling system falls between the horizontal projections of the pair of guide rails. Hooks for hooking the electric hoist are provided on the left and right sides of the box body, and the electric hoist is used to lift the anti-falling system.

[0017] Preferably, the airbag is in the shape of an inverted quadrangular frustum, and the two sides opposite to the wall are in an outwardly expanding arc shape.

[0018] Preferably, the upper part of the box body is slidably connected between the side close to the wall and the guide rail.

[0019] A construction method of a building construction scaffold, comprising the following steps:

[0020] Install the frame system and the guiding load unloading system, and provide unloading support for the frame system through the guiding load unloading system;

[0021] Install the anti-falling system and control it to the initial state. Specifically: control the cylinder to contract to the shortest, and inflate the airbag until it abuts against the bottom end of the frame system;

[0022] Construct the construction layer until the construction is completed;

[0023] Lift the frame through the lifting system and release the support of the load unloading system;

[0024] The lifting system works to lift the height of the frame system by one floor and stop when lifted in place. Among them, during the lifting process, the cylinder works synchronously to drive the first support plate to move upward, and then drives the airbag to move upward. When the cylinder extends to the longest, inject gas into the airbag to make the airbag expand;

[0025] Provide unloading support for the frame system through the guiding load unloading system;

[0026] Remove the connection between the corresponding wall-attached support and the corresponding guide wheel of the base, and fix the wall-attached support to the construction layer. Remove the guide wheel corresponding to the layer above the base and fix the guide wheel to the construction layer;

[0027] The lifting system constructs the connection with the box body and works to drive the anti-falling system to move up one floor, and make the lowermost guide wheel match and fix with the lowermost wall-attached support. Among them, during the upward movement of the anti-falling system, the airbag deflates and the cylinder contracts to the initial state.

[0028] The present invention has at least the following beneficial effects: Through the setting of the wall-attached support and the telescopic rod, it is realized that during the upward movement of the frame system, the up and down position adjustment is not affected; Through the setting of the anti-falling system, a bottom recoil device is provided during hoisting. The airbag cooperates with the second support plate with elastic setting to provide double-stage buffering, and further cooperates with the first support plate supported by the cylinder to increase the support height during the lifting process; Through the setting of the guide wheel and the hook and the cooperation with the lifting system, it is realized to lift the anti-falling system by using the lifting system, improving the operation convenience of the whole device.

[0029] Other advantages, objectives and features of the present invention will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the building construction scaffold according to one of the technical solutions of the present invention;

[0031] Figure 2 Schematic structural diagram of the construction scaffold according to one of the technical solutions of the present invention;

[0032] Figure 3 Schematic structural diagram of the wall-attached support, guide rail and base according to one of the technical solutions of the present invention;

[0033] Figure 4 Schematic structural diagram of the wall-attached support and guide rail according to one of the technical solutions of the present invention;

[0034] Figure 5 Schematic structural diagram of the wall-attached support according to one of the technical solutions of the present invention.

[0035] The reference numerals are specifically as follows: the frame system 1; the rigid walkway plate 10; the vertical keel 11; the guide rail 2; the chute 20; the guide groove 21; the stop bar 22; the wall-attached support 3; the mounting seat 30; the guide wheel 4; the rear mounting part 40; the unloading support jack 5; the support part 50; the limiting rod 51; the telescopic rod 52; the base 6; the air cylinder 60; the first support plate 61; the box body 62; the elastic telescopic rod 7; the outer cylinder 70; the inner cylinder 71; the airbag 72; the upper load-bearing beam 8; the lower load-bearing beam 80; the hook 9. Specific embodiments

[0036] The following further describes the present invention in detail with reference to the accompanying drawings, so that those skilled in the art can implement it according to the description in the specification.

[0037] It should be understood that the terms such as "having", "comprising" and "including" used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0038] As Figures 1-5 shown, the present invention provides a construction scaffold, comprising:

[0039] Ⅰ. The frame system 1, as Figure 1 shown, the side of the frame system 1 against the wall is defined as the rear, and the side opposite to the wall is defined as the front. The frame system 1 includes:

[0040] Multiple vertical keels 11, and multiple vertical keels 11 form a cuboid-shaped frame. Specifically, it can include three at each end of the cuboid-shaped frame along the width direction and two in the middle; wherein, the width direction is the left-rear direction of the frame system 1, and the front-rear direction of the frame system 1 is the thickness direction of the cuboid-shaped frame;

[0041] Multiple layers of rigid walkway plates 10, and multiple layers of rigid walkway plates 10 are matched with multiple floors. Each layer of rigid walkway plate 10 is installed in the cuboid-shaped frame formed by multiple vertical keels 11, and two adjacent rigid walkway plates 10 in the horizontal direction are connected by bolts and horizontal connecting plates;

[0042] Multiple groups of strengthening frames are arranged between any two vertical keels 11 in any adjacent two rigid walkway plates 10 along the thickness direction of the frame. The strengthening frames can include square rigid brackets, inclined brackets, etc., which are specifically set according to actual needs to improve the stability of the frame body;

[0043] Preferably, the height of the frame body system 1 is set to 4.5 floor heights. The floor corresponding to the lowest end of the frame body system 1 is defined as the Kth floor, and then it is sequentially defined as the (K + 1)th floor, (K + 2)th floor, (K + 3)th floor, and (K + 4)th floor (the floor to be constructed) from bottom to top;

[0044] II. Guiding unloading system, which includes:

[0045] A pair of guide rails 2 are arranged at intervals on the side of the frame body system 1 close to the wall. The pair of guide rails 2 respectively correspond to three vertical keels 11 at each end of the cuboid-shaped frame along the width direction, and cooperate to form a square frame. The bottom end of the guide rail 2 extends downward relative to the frame body system 1 by 2 floors, that is, the lowest end of the guide rail 2 matches the floor height of the (K - 1)th floor. Among them, a pair of chutes 20 are recessed on both the left and right sides of each guide rail 2, and a guide groove 21 is recessed on the side of each guide rail 2 facing the wall. A plurality of retaining rods 22 are arranged at intervals up and down in the knife groove;

[0046] A plurality of wall-attached supports 3 are arranged between the pair of guide rails 2 and the floor slabs of each floor (except for the corresponding lowest floor). The wall-attached supports 3 are fixed to the wall through wall bolts. A pair of guide wheels 4 are detachably arranged at one end of the wall-attached support 3 close to the guide rail 2. Specifically, a pair of mounting seats 30 are arranged at one end of the wall-attached support 3 away from the wall. The pair of mounting seats 30 are arranged vertically. The pair of guide wheels 4 have rear mounting parts 40 matching the pair of mounting seats 30 of the corresponding wall-attached support 3, so that when the pair of guide wheels 4 move towards each other in the left-right direction and are slidably connected to the corresponding guide rail 2, the rear mounting parts 40 are docked with the pair of mounting seats 30 of the corresponding wall-attached support 3 and are detachably connected by bolts;

[0047] A plurality of unloading support jacks 5 are in one-to-one correspondence with the wall-attached supports 3 arranged on the (K + 1)th floor, (K + 2)th floor, and (K + 3)th floors. Each unloading support jack 5 is hinged to the corresponding wall-attached support 3. Its top end has a support part 50 matching the retaining rod 22, and a limiting rod 51 is arranged below the support part 50. When the retaining rod 22 is supported on the corresponding support part 50, the limiting rod 51 abuts against the guide rail 2. An expansion rod 52 is also hinged between the unloading support jack 5 and the wall-attached support 3 to extend / contract to change the included angle between the unloading support jack 5 and the wall-attached support 3;

[0048] III. Anti-falling system, which includes:

[0049] A base 6 detachably connected to the lowermost guide wheel 4. A front mounting portion is provided on the side of the guide wheel 4 away from the wall. The base 6 has a site that matches and mounts with the front mounting portion, so that when a pair of the lowermost guide wheels 4 move towards each other in the left-right direction until they are slidably connected to the corresponding guide rails 2, the front mounting portion and the base 6 are docked and detachably connected by bolts. Among them, the front mounting portion does not affect the up-and-down movement of the frame system 1; preferably, the base 6 extends upward circumferentially to form a box body 62. A plurality of air cylinders 60 are arranged in a matrix in the box body 62, and the telescopic ends of the plurality of air cylinders 60 hermetically pass through the top end of the box body 62;

[0050] A first support plate 61 provided on the base 6 is supported by the air cylinders 60, that is, the first support plate 61 is supported on the tops of the plurality of air cylinders 60;

[0051] A second support plate elastically provided on the first support plate 61. Among them, a plurality of elastic telescopic rods 7 are arranged in a matrix between the first support plate 61 and the second support plate. Each elastic telescopic rod 7 includes an outer cylinder 70 vertically fixed to the first support plate 61, an inner cylinder 71 slidably disposed in the outer cylinder 70, and a spring elastically supported between the inner cylinder 71 and the outer cylinder 70. The second support plate is supported on the tops of the plurality of inner cylinders 71;

[0052] An airbag 72 is provided with the second support plate as the bottom. Among them, at least one one-way valve communicating with the airbag 72 is provided on the second support plate. When there is no external pressure, the one-way valve is closed. Preferably, the height of the top end of the box body 62 is set to 0.9 - 1.2 m, and the stroke of the air cylinder 60 is set to 1 - 1.4 m. The specific values are set according to the actual situation. After unloading and when the air cylinder 60 contracts to the shortest, that is, when the height of the first support plate 61 is the lowest, the inflation height of the airbag 72 is controlled to be 0.2 - 0.4 m. The top end of the airbag 72 abuts against the bottom end of the frame system 1, and the one-way valve is closed;

[0053] The horizontal projection of the anti-falling system falls between the horizontal projections of a pair of guide rails 2. Hooks 9 for hooking an electric hoist are provided on the left and right sides of the box body 62;

[0054] Ⅳ. Lifting System, which is arranged between the frame system 1 and the floor slab of one of the floors and is used to lift the frame system 1. Specifically, the lifting system includes a pair of upper and lower load-bearing beams. The pair of upper and lower load-bearing beams respectively correspond to a pair of guide rails 2 along the width direction of the rigid walkway board 10 (the left-right direction of the frame system 1). Each pair of upper and lower load-bearing beams includes an upper load-bearing beam 8 and a lower load-bearing beam 80 that are arranged in the frame system 1 with a two-floor interval up and down. Preferably, the lower load-bearing beam 80 is arranged above the rigid walkway board 10 of the Kth floor, and the upper load-bearing beam 8 is arranged below the rigid walkway board 10 of the (K + 2)th floor. Both the lower load-bearing beam 80 and the upper load-bearing beam 8 are detachably fixed to the 3 vertical keels 11 at the end and the corresponding guide rails 2. Matching with each pair of upper and lower load-bearing beams includes:

[0055] Lifting hanging seat, which is fixed on the wall and has a height matching that of the upper load-bearing beam 8, that is, it is arranged on the floor slab of the (K + 2)th floor;

[0056] Electric hoist, which is fixed on the upper load-bearing beam 8;

[0057] Steel wire rope, one end of which is fixed on the lifting hanging seat, and the other end bypasses the lower load-bearing beam 80 and is hooked to the electric hoist. Among them, the lower load-bearing beam 80 has a pulley for the steel wire rope to bypass along the front-back direction of the frame;

[0058] Ⅴ. Control System, which is connected to the unloading support 5, electric hoist, cylinder 60, etc., and is used to control the work of the unloading support 5, electric hoist, cylinder 60, etc.

[0059] In the above technical solution, during the use process, in one specific embodiment, it includes the following steps:

[0060] State 1. Construction state:

[0061] The floor corresponding to the lowest end of the frame system 1 is the Kth floor;

[0062] Wall-mounted supports 3 are installed between the floor slabs of the Kth, (K + 1)th, (K + 2)th, and (K + 3)th floors and the guide rails 2. A pair of guide wheels 4 of the wall-mounted support 3 are slidably connected to the corresponding guide rails 2, and the unloading support 5 of each wall-mounted support 3 propping against the corresponding stop bar 22;

[0063] The base 6 of the anti-falling system is installed on the (K - 1)th floor through the wall-mounted support 3 of the (K - 1)th floor. When the cylinder 60 contracts to the shortest, that is, when the height of the first support plate 61 is the lowest, control the inflation height of the airbag 72 to be 0.32 m. The top end of the airbag 72 abuts against the bottom end of the frame system 1, and the one-way valve is closed. Among them, the telescopic rod 52 of the wall-mounted support 3 on the (K - 1)th floor extends to the first position, driving the unloading support 5 away from the corresponding stop bar 22;

[0064] The construction floor is the (K + 4)th floor until the construction is completed;

[0065] State 2, Construction Scaffold Lifting State:

[0066] Hook the other end of the steel wire rope on the electric hoist;

[0067] The unloading support 5 contracts and the telescopic rod 52 extends, so that the unloading support 5 moves away from the corresponding stop rod 22;

[0068] The electric hoist works, and the lifting height is one floor. After lifting in place, adjust individual positions to keep horizontal. Among them, during the lifting process, the air cylinder 60 works synchronously to drive the first support plate 61 to move upward, and then drives the airbag 72 to move upward. When the air cylinder 60 extends to the longest, inject gas into the airbag 72 to make the airbag 72 expand. Specifically: the maximum expansion height of the anti-falling system is 1.5 floor heights;

[0069] The unloading support 5 extends and the telescopic rod 52 shortens, so that the unloading support 5 supports the frame system 1 through the stop rod 22. Further, remove the connection between the K-1th layer wall attachment support 3 and the corresponding guide wheel 4, and fix the wall attachment support 3 to the K+4th layer. Remove the Kth layer guide wheel 4 and fix the guide wheel to the K+4th layer;

[0070] State 3, Anti-falling System Lifting State:

[0071] The electric hoist disengages the steel wire rope and hooks on the hook 9 on the box body 62;

[0072] Start the electric hoist to drive the anti-falling system to move up one floor, and make the lowermost guide wheel 4 match and fix with the lowermost wall attachment support 3. During the synchronous upward movement, the airbag 72 deflates, and the air cylinder 60 contracts to the same construction state;

[0073] The electric hoist disengages the hook 9. Adopting this technical solution, through the setting of the wall attachment support 3 and the telescopic rod 52, it is realized that during the upward movement of the frame system 1, the up and down position adjustment is not affected; through the setting of the anti-falling system, a bottom reaction device during hoisting is provided. The airbag 72 cooperates with the second support plate with elastic setting to provide double-stage buffering, and further cooperates with the first support plate 61 supported by the air cylinder 60 to increase the support height during the lifting process; through the setting of the guide wheel 4 and the hook 9 and the lifting system, it is realized to lift the anti-falling system by using the lifting system, improving the operation convenience of the whole device.

[0074] In another technical solution, the airbag 72 is in an inverted quadrangular pyramid shape, and the two sides opposite to the wall are in an outward-expanded arc shape. Adopting this solution, the elastic support surface is improved.

[0075] In another technical solution, the upper part of the box body 62 on the side close to the wall is slidably connected to the guide rail 2. Adopting this solution, the upward movement stability of the anti-falling system is improved.

[0076] <Example 1>

[0077] A construction method for a construction scaffold, comprising the following steps:

[0078] Taking the height of the construction scaffold as 4.5 floor heights, with the (n + 4)-th floor as the initial construction floor and the (n + 5)-th floor as the next construction floor as an example, it is described as follows:

[0079] Step 1: Install the construction scaffold

[0080] Install the bottom support frame, which can be an attached bearing scaffold;

[0081] Relying on the bottom support frame, install the rigid walkway plate 10, vertical keel 11, lower load-bearing beam 80, and strengthening frame;

[0082] Install the first protective net;

[0083] Install the second rigid walkway plate 10;

[0084] Install the guide rail 2;

[0085] Install the guiding unloading system corresponding to the n-th and (n + 1)-th floor slabs, specifically, install the wall-attached support 3 and unload the currently completed frame system 1;

[0086] Continuously assemble the frame upwards in sequence until the frame system 1 covers 4.5 floors, and simultaneously complete the installation of the guiding unloading system, upper load-bearing beam 8, and lifting hanging seat;

[0087] Install the lifting system;

[0088] Install the anti-falling system. Among them, the base 6 of the anti-falling system is installed on the (n - 1)-th floor through the wall-attached support 3 on the (n - 1)-th floor. When the cylinder 60 contracts to the shortest, that is, when the height of the first support plate 61 is the lowest, control the inflation height of the airbag 72 so that the top end of the airbag 72 abuts against the bottom end of the frame system 1, and the one-way valve closes. Among them, the telescopic rod 52 of the wall-attached support 3 on the (n - 1)-th floor extends to the first position, driving the unloading support 5 away from the corresponding stop lever 22;

[0089] Step 2: Construct the (n + 4)-th floor until the construction is completed;

[0090] Step 3: Lift the construction scaffold:

[0091] The electric hoist hooks the other end of the steel wire rope;

[0092] The unloading support 5 contracts and cooperates with the extension of the telescopic rod 52, so that the unloading support 5 moves away from the corresponding stop lever 22;

[0093] The electric hoist operates, and the lifting height is one floor. After lifting in place, individual positions are adjusted to maintain level. Among them, during the lifting process, the cylinder 60 works synchronously to drive the first support plate 61 to move upward, and then drives the airbag 72 to move upward. When the cylinder 60 extends to the longest, gas is injected into the airbag 72 to make the airbag 72 expand. Specifically: the maximum expansion height of the anti-falling system is 1.5 floor heights;

[0094] The unloading support 5 extends and the telescopic rod 52 shortens, so that the unloading support 5 supports the frame system 1 through the shift lever 22. Further, the connection between the (n - 1)-th floor wall attachment support 3 and the corresponding guide wheel 4 is removed, and this wall attachment support 3 is fixed to the (n + 4)-th floor. The guide wheel 4 on the n-th floor is removed and fixed to the (n + 4)-th floor;

[0095] Step Four: Lifting of the anti-falling system

[0096] The electric hoist disengages from the steel wire rope and hooks onto the hook 9 on the box body 62;

[0097] Start the electric hoist to drive the anti-falling system to move up one floor, and make the lowermost guide wheel 4 match and fix with the lowermost wall attachment support 3. During the synchronous upward movement, the airbag 72 deflates, and the cylinder 60 contracts to the same construction state;

[0098] The electric hoist disengages from the hook 9.

[0099] Step Five: After the floor height +1, repeat Steps Two - Four until the construction is complete.

[0100] The equipment quantities and processing scales described here are used to simplify the description of the present invention. The application, modification, and variation of the construction scaffold of the present invention are obvious to those skilled in the art.

[0101] Although the embodiments of the present invention have been disclosed as above, it is not limited to only the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to specific details and the illustrated examples here.

Claims

1. Construction scaffold, characterized in that, include: Rack system; The guide unloading system includes a pair of guide rails spaced apart on the wall side of the frame system, the bottom end of the guide rails extending downward by two floors relative to the frame system, a wall-attached support is arranged between the pair of guide rails and the floor slabs of other floors except the corresponding lowest floor, a pair of guide wheels are detachably arranged at one end of the wall-attached support close to the guide rail, and the pair of guide wheels are slidably connected to the corresponding guide rails; An anti-fall system, comprising a base detachably connected to a guide wheel located at the bottom, a first support plate supported by a cylinder and arranged on the base, a second support plate elastically arranged on the first support plate, and an air bag arranged with the second support plate as the bottom covering, wherein at least one one-way valve connected to the air bag is arranged on the second support plate, and when there is no external pressure, the one-way valve is closed; The lifting system is arranged between the frame system and the floor slab of one of the floors and is used for lifting the frame system.

2. The construction scaffold according to claim 1, characterized in that, The base extends upward in the circumferential direction to form a box body, and a plurality of cylinders are arranged in a matrix in the box body, and the telescopic ends of the plurality of cylinders are sealed and pass through the top of the box body; A plurality of elastic telescopic rods are arranged in a matrix between the first support plate and the second support plate, each elastic telescopic rod comprises an outer cylinder vertically fixed to the first support plate, an inner cylinder slidably arranged in the outer cylinder, and a spring elastically supported between the inner cylinder and the outer cylinder, and the second support plate is supported on the top ends of the plurality of inner cylinders.

3. The construction scaffold according to claim 2, characterized in that, The lifting system includes a pair of upper and lower load-bearing beams, each pair of upper and lower load-bearing beams corresponds to a pair of guide rails, each pair of upper and lower load-bearing beams includes an upper load-bearing beam and a lower load-bearing beam arranged in the frame system with two floors above and below, and each pair of upper and lower load-bearing beams is matched with: A lifting bracket is fixed on the wall, and its height matches the height of the upper load-bearing beam; An electric hoist, which is fixed on the upper load-bearing beam; One end of the steel wire rope is fixed on the lifting bracket, and the other end is passed around the lower load-bearing beam and hooked with the electric hoist.

4. The construction scaffold according to claim 3, characterized in that, The horizontal projection of the anti-falling system falls between the horizontal projections of a pair of guide rails. The left and right sides of the box body are provided with hooks that are hooked with an electric hoist. The electric hoist is used to lift the anti-falling system.

5. The construction scaffold according to claim 4, characterized in that, The air bag is in the shape of an inverted quadrangular pyramid, and the two sides opposite to the wall are in an outwardly expanding arc shape.

6. The construction scaffold according to claim 5, characterized in that, The upper part of the box body is slidably connected to the guide rail on one side close to the wall.

7. The construction method of the construction scaffold according to claim 4, characterized in that, The following steps are involved: Install the frame system and the guide unloading system, and provide unloading support for the frame system through the guide unloading system; Install the anti-fall system and control it to the initial state, specifically: control the cylinder to be retracted to the shortest, and inflate the airbag until it abuts against the bottom end of the frame system; Construction layer construction until completion; By lifting the system hoisting frame, the support of the unloading system is released; The lifting system works to lift the frame system to a height of one floor and lift it into place. During the lifting process, the cylinder works synchronously to drive the first support plate to move upward, thereby driving the airbag to move upward. When the cylinder is extended to the longest position, gas is injected into the airbag to expand the airbag. Provide unloading support for the frame system through the guide unloading system; Remove the connection between the corresponding wall support of the base and the corresponding guide wheel, and fix the wall support to the construction layer, remove the corresponding guide wheel located one layer above the base, and fix the guide wheel to the construction layer; The connection between the lifting system and the box body is established and it operates, driving the anti-falling system to move up one floor and making the guide wheel at the bottom match and fix with the wall-attached support at the bottom. During the upward movement of the anti-falling system, the airbag deflates and the cylinder contracts to its initial state.

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