CN113700280B

CN113700280B - Overhanging scaffold

Info

Publication number: CN113700280B
Application number: CN202111145518.0A
Authority: CN
Inventors: 冯春明; 吴军胜; 吴涛; 陈韡; 高月峰; 路军; 王冲; 陈阳; 段旭阳; 王志杰
Original assignee: China Energy Construction Northwest City Construction Co ltd
Current assignee: China Energy Construction Northwest City Construction Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-12-27
Anticipated expiration: 2041-09-28
Also published as: CN113700280A

Abstract

The application relates to an overhanging scaffold, which relates to the technical field of auxiliary devices for building construction, and comprises a mounting component arranged on an I-shaped steel, a fixing component used for fixing the mounting component and a supporting component used for supporting the I-shaped steel; the mounting assembly comprises a moving part and at least two sliding rails, the at least two sliding rails are symmetrically arranged on the I-shaped steel, the sliding direction of the sliding rails is parallel to the surface of the wall body, at least two sliding blocks are connected in each sliding rail, the at least two sliding blocks slide in the opposite direction or in the opposite direction along the length direction of the sliding rails, a connecting rod is connected between the two sliding blocks on the two different sliding rails but positioned on the same side of the sliding rails, one end of the connecting rod is connected with one sliding block, the other end of the connecting rod is connected with the other sliding block, and the moving part is used for driving the sliding blocks to slide in the opposite direction or in the opposite direction along the sliding rails; the fixing assembly comprises a first fixing piece, and the first fixing piece is used for fixing the sliding rail on the I-shaped steel. This application has the effect of the security that is convenient for install scaffold frame and improves scaffold frame simultaneously.

Description

Overhanging scaffold

Technical Field

The application relates to the technical field of building construction auxiliary devices, in particular to a cantilever scaffold.

Background

The overhanging scaffold is a simple facility used in a building and is divided into two types of overhanging in each layer and overhanging in multiple layers.

The Chinese patent with application publication number CN109779225A discloses a cantilever type external scaffold, which comprises an external scaffold body, wherein the external scaffold body is fixed on the outer side of an outer wall of a building through a wall connecting piece, and the wall connecting piece comprises a first wall connecting piece, a second wall connecting piece and a third wall connecting piece; compared with the traditional construction technology of the cantilever scaffold, the construction method of embedding the connecting steel plate on the beam and then fixing the I-shaped steel solves the problems that the cantilever scaffold has large demand on the I-shaped steel material, and the parallelism and the construction hole residue are difficult to control by embedding the connecting wall rod; the embedded connecting steel plates do not influence the masonry construction, the leakage hidden danger caused by hole reserving during masonry and the potential safety hazard of dismantling the wall connecting rod during the construction of workers are reduced, and the influence on the building structure is small; the overlong I-shaped steel material is not required to be arranged and fixed in the building, so that the material and the construction cost are saved; the problem that the parallelism of the embedded wall connecting rod is difficult to control is solved, the construction efficiency is improved, and the construction period is shortened.

In view of the above related technologies, the inventor thinks that it is troublesome to install the overhanging scaffold, and meanwhile, because the stress points are mainly concentrated on the i-shaped steel, the i-shaped steel can bear a light weight, which is more likely to cause potential safety hazards.

Disclosure of Invention

In order to improve the security of scaffold frame simultaneously for the convenience of installation scaffold frame, this application provides a scaffold frame of encorbelmenting.

The application provides a scaffold frame of encorbelmenting adopts following technical scheme:

a cantilever scaffold comprises a mounting assembly arranged on an I-shaped steel, a fixing assembly used for fixing the mounting assembly and a supporting assembly used for supporting the I-shaped steel; the mounting assembly comprises a moving part and at least two sliding rails, the at least two sliding rails are symmetrically arranged on the I-shaped steel, the sliding direction of the sliding rails is parallel to the surface of the wall body, at least two sliding blocks are connected in each sliding rail, the at least two sliding blocks slide in the opposite direction or in the opposite direction along the length direction of the sliding rails, a connecting rod is connected between the two sliding blocks on the two different sliding rails but positioned on the same side of the sliding rails, one end of the connecting rod is connected with one sliding block, the other end of the connecting rod is connected with the other sliding block, and the moving part is used for driving the sliding blocks to slide in the opposite direction or in the opposite direction along the sliding rails; the fixing assembly comprises a first fixing piece, and the first fixing piece is used for fixing the sliding rail on the I-shaped steel.

Through adopting the above technical scheme, before the installation scaffold, hoist the installation component to the I-steel on, make two slide rails be located the I-steel, start the driving piece, the driving piece drives the moving member and removes the slider, the slider drives two connecting rods and moves in opposite directions, until the lateral wall of connecting rod and the lateral wall butt of I-steel, use first mounting to fix the slide rail on the I-steel, install the scaffold frame on the installation component again, the installation component is convenient for install the scaffold frame, slider and connecting rod are convenient for install the installation component on the I-steel, the mounting makes the installation component fix with the I-steel, be convenient for install the scaffold frame and improve the security of scaffold frame simultaneously.

Optionally, the moving member includes a bidirectional screw, a guide rod and a first driving member; the one end of two-way screw rod rotates with a lateral wall of a slide rail to be connected, and the other end rotates with another lateral wall of a slide rail to be connected, and guide bar one end is connected with the lateral wall of another slide rail, and the other end is connected with another lateral wall of another slide rail, and the axis of two-way screw rod and the axis of guide bar all are parallel with the length direction of slide rail, and the output and the two-way screw rod of first driving piece are connected, and first driving piece is used for driving two-way screw rod to rotate, slider and two-way screw rod threaded connection.

Through adopting above-mentioned technical scheme, start first driving piece, first driving piece drives two-way screw rod and rotates, and two-way screw rod drives the slider in same slide rail and moves in opposite directions for two sliders in same slide rail press from both sides the I-steel tightly, make the slide rail fix on the I-steel, fix in advance the slide rail, are convenient for install the subassembly, thereby are convenient for install the scaffold frame.

Optionally, the first fixing piece comprises a fixing seat, a clamping piece, a fixing hook and a fixing column; the fixing base is connected with the slider lower extreme, and joint spare one end is kept away from the one end rotation of slider with the fixing base and is connected, and the other end rotates with the one end that the fixed hook kept away from the hook mouth to be connected, and the fixed column is connected near the one end of card fixed hook with the slide rail, and the fixed hook can be with the fixed column lock.

Through adopting above-mentioned technical scheme, when slider and I-steel butt, the joint spare is rotated with the I-steel butt simultaneously to the fixing base, and joint spare drives the fixed hook and turns to the one end of keeping away from the fixing base for fixing base, joint spare and fixed hook encircle an I-steel, with the fixed hook joint on the fixed column, fix the I-steel, improve the security of scaffold frame.

Optionally, the fixing assembly further comprises a second fixing piece, and the second fixing piece comprises a first fixing piece and a second fixing piece; the first fixing piece is arranged on the wall body, the second fixing piece is arranged on the sliding rail close to the wall body, one end of the second fixing piece, far away from the wall body, is abutted to the sliding rail, a connecting piece is connected between the first fixing piece and the second fixing piece, one end of the connecting piece, far away from the wall body, is connected with one end of the first fixing piece, the other end of the connecting piece is connected with one end, close to the sliding rail, of the second fixing piece, a third fixing piece is arranged on the first fixing piece, and the third fixing piece is used for fixing the first fixing piece on the wall body.

Through adopting above-mentioned technical scheme, use first mounting with the slide rail after in advance fixing on the I-steel, make the one side that the second stationary blade is close to first stationary blade and the laminating of the one side that the wall body was kept away from to the I-steel, use the third mounting with first stationary blade fixed connection on the wall body to with slide rail and wall connection, fix the slide rail, improve the stability of installation component, thereby improve the security of scaffold frame.

Optionally, the support assembly includes a bracket, the bracket is disposed on the ground, and the top of the bracket abuts against the bottom of the i-steel.

Through adopting above-mentioned technical scheme, the support supports and accepts the effect to the I-steel, increases the intensity of I-steel to improve scaffold's security.

Optionally, the supporting assembly further comprises a second driving piece and a supporting piece, the supporting piece is arranged below the I-steel, one end of the supporting piece is abutted to the bottom of the I-steel, the other end of the supporting piece is connected with the second driving piece, the second driving piece is arranged between the supporting piece and the support, the second driving piece is connected to the top end of the support, and the second driving piece is used for driving the supporting piece to lift.

Through adopting above-mentioned technical scheme, support piece is used for accepting the I-steel, and when the height that highly is less than the I-steel that needs to support of support, drive second driving piece, second driving piece drive support piece upward movement until support piece and I-steel bottom butt, improve supporting component's suitability.

Optionally, at least one expansion plate is arranged between the two connecting rods, one end of the at least one expansion plate is connected with the side wall of one connecting rod, and the other end of the at least one expansion plate is connected with the side wall of the other connecting rod.

Through adopting above-mentioned technical scheme, the expansion plate is used for increasing the installation face of installation scaffold frame to be convenient for operating personnel installs scaffold frame.

Optionally, a plurality of mounting seats are arranged at intervals in the circumferential direction of the upper end of the telescopic plate, each mounting seat comprises a mounting table and a mounting pipe, the mounting tables are connected with the upper ends of the telescopic plates, one ends, far away from the telescopic plates, of the mounting tables are connected with the mounting pipes, and the axes of the mounting pipes are perpendicular to the upper surface of the telescopic plates.

Through adopting above-mentioned technical scheme, when installation scaffold, establish the steel pipe cover on the installation pipe, set up scaffold, perhaps directly will set up the scaffold that corresponds with the mount pad size hoist to cup joint with the installation pipe to be convenient for install scaffold.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the mounting assembly, the fixing assembly and the supporting assembly, the mounting assembly is convenient for building a platform for an operator to mount the scaffold on the I-steel, so that the scaffold is convenient to mount; the fixing component fixes the mounting component on the I-shaped steel, so that the stability of the mounting component on the I-shaped steel is improved, and the stability of the scaffold is improved; the supporting assembly is used for supporting the I-shaped steel and improving the bearing range of the I-shaped steel, so that the supporting strength of the scaffold is improved, the scaffold is convenient to mount and the safety of the scaffold is improved;

2. through setting up first driving piece, two-way screw rod, guide bar, slider and connecting rod, drive first driving piece, first driving piece drives two-way screw rod and rotates, and two-way screw rod drives the slider and slides along the guide bar in opposite directions simultaneously, fixes the slide rail on the I-steel in advance, is convenient for fix the slide rail and install scaffold.

Drawings

Fig. 1 is a schematic structural diagram of an overhanging scaffold according to an embodiment of the present application.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a structural schematic diagram of another view angle of the overhanging scaffold according to the embodiment of the present application.

Fig. 4 is an enlarged view of a portion B in fig. 3.

Fig. 5 is a schematic usage state diagram of a cantilever scaffold according to an embodiment of the present application.

Description of reference numerals: 1. mounting the component; 11. a moving member; 111. a bidirectional screw; 112. a guide bar; 113. a first driving member; 12. a slide rail; 121. a through slot; 13. a slider; 14. a connecting rod; 2. a fixing assembly; 21. a first fixing member; 211. a fixed seat; 212. a clamping piece; 213. a fixed hook; 214. fixing a column; 22. a second fixing member; 221. a first fixing sheet; 222. a second fixing sheet; 223. connecting sheets; 224. a third fixing member; 3. a support assembly; 31. a support; 32. a second driving member; 33. a support member; 4. a retractable plate; 5. a mounting seat; 51. a mounting table; 52. and (5) installing a pipe.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses scaffold frame of encorbelmenting.

Referring to fig. 1-3, the overhanging scaffold comprises a mounting assembly 1, a fixing assembly 2 and a supporting assembly 3, wherein the mounting assembly 1 is arranged above an I-shaped steel and used for mounting the scaffold; the fixing component 2 is used for fixing the mounting component 1 on the I-shaped steel; supporting component 3 sets up in the I-steel below, and supporting component 3 supports and accepts the I-steel, improves the bearing strength of I-steel. The installation component 1 comprises a moving part 11 and two sliding rails 12, the sliding rails 12 are cuboids provided with through grooves 121, the through direction of the through grooves 121 is the same as the height direction of the sliding rails 12, the through grooves 121 are used for placing the moving part 11, the two sliding rails 12 are symmetrically arranged on the i-steel, the sliding direction of the sliding rails 12 is perpendicular to the length direction of the i-steel, two sliding blocks 13 are connected in each sliding rail 12, the two sliding blocks 13 are symmetrically arranged, a connecting rod 14 is connected between the two sliding blocks 13 on the two different sliding rails 12 and located on the same side of the sliding rails 12, one end of the connecting rod 14 is welded with one side, close to the center of the i-steel, of the other end of the connecting rod is welded with one side, close to the center of the i-steel, the moving part 11 enables the sliding blocks 13 of the two sliding rails 12 to slide oppositely or oppositely along the sliding rails 12, the sliding blocks 13 further clamp the i-steel, and the sliding rails 12 are fixed on the i-steel.

Referring to fig. 1 to 3, the moving member 11 includes a bidirectional screw 111, a guide rod 112 and a first driving member 113, one end of the bidirectional screw 111 is rotatably connected to one side wall of one slide rail 12 through a bearing, the other end of the bidirectional screw is rotatably connected to the other side wall of one slide rail 12 through a bearing, one end of the guide rod 112 is welded to the side wall of the other slide rail 12, the other end of the guide rod 112 is welded to the other side wall of the other slide rail 12, and both an axis of the bidirectional screw 111 and an axis of the guide rod 112 are parallel to a sliding direction of the slider 13; the sliding blocks 13 are respectively in threaded connection with the two-way screw rods 111 in the sliding rails 12, and the sliding blocks 13 are respectively in sliding connection with the guide rods 112 in the sliding rails 12; the first driving member 113 is a servo motor, an output end of the first driving member 113 is connected with one end of the bidirectional screw 111 through a coupler, and the housing is fixedly connected with one end of the slide rail 12 close to the first driving member 113 through a bolt.

Referring to fig. 1 to 3, three expansion plates 4 are arranged between two connecting rods 14 at intervals along the length direction of the i-beam, the expansion plates 4 are steel expansion plates 4, one end of each expansion plate 4 is welded to the side wall of one connecting rod 14, and the other end of each expansion plate 4 is welded to the side wall of the other connecting rod 14. The mounting area of the expansion plate 4 during construction of operators is increased, the scaffold is convenient to mount by the operators, and meanwhile, the safety of the operators during mounting is improved.

Start first driving piece 113, first driving piece 113 drives two-way screw 111 and rotates, because connecting rod 14 connects the slider 13 in two slide rails 12, two-way screw 111 can drive slider 13 and slide in opposite directions along guide bar 112 to it stretches out and draws back to drive expansion plate 4, makes expansion plate 4 form the mounting plane of installation scaffold, and the operating personnel of being convenient for installs the scaffold, has improved the security when operating personnel installs simultaneously.

Referring to fig. 3, four mounting seats 5 are circumferentially arranged on the upper surface of the expansion plate 4 at intervals, each mounting seat 5 comprises a mounting table 51 and a mounting pipe 52, one surface of each mounting table 51 is welded to the expansion plate 4, one end of each mounting pipe 52 is welded to the upper surface of the corresponding mounting table 51, and the axis of each mounting pipe 52 is perpendicular to the upper surface of the corresponding mounting table 51. When the scaffold is installed, the steel pipe sleeve is arranged on the installation pipe 52, the scaffold is erected, and the scaffold is convenient to install.

Referring to fig. 2 to 4, the fixing assembly 2 includes a first fixing member 21 and a second fixing member 22, the first fixing member 21 is used for fixing the slide rail 12 on the i-beam, and the second fixing member 22 is used for connecting the slide rail 12 with a wall body, so as to further fix the slide rail 12. The first fixing member 21 includes a fixing seat 211, a clamping member 212, a fixing hook 213 and a fixing column 214, the fixing seat 211 may be a cuboid or a cube, in this embodiment, the fixing seat 211 is a cuboid, an upper surface of the fixing seat 211 is welded to a lower surface of the slider 13, the clamping member 212 is a "C" shaped connecting member with an upward opening, one end of the clamping member 212 is rotatably connected to the fixing seat 211 through a rotating shaft, the other end of the clamping member 212 is rotatably connected to one end of the fixing hook 213 away from a hook opening through a rotating shaft, and inner side walls of the clamping member 212 are attached to outer side walls of the i-shaped steel; the fixed column 214 is provided with a plurality ofly, and a plurality of fixed columns 214 are arranged along the length direction of slide rail 12 at equidistant interval, and fixed column 214 one end and slide rail 12 are close to the one end welding of fixed hook 213, and the axis of fixed column 214 is parallel with the upper surface of slide rail 12, and when joint spare 212 and I-steel elastic clamping, rotate fixed hook 213 for fixed hook 213 and fixed column 214 elastic clamping, thereby fix slide rail 12, improve the stability of slide rail 12 on the I-steel.

Referring to fig. 3 and 4, the second fixing member 22 includes a first fixing piece 221 and a second fixing piece 222, a connecting piece 223 is connected between the first fixing piece 221 and the second fixing piece 222, one end of the connecting piece 223 is welded to one side of the first fixing piece 221 near the connecting piece 223, the other end is welded to one end of the second fixing piece 222 near the connecting piece 223, the upper surface of the first fixing piece 221 is parallel to the upper surface of the connecting piece 223, and the lower surface of the second fixing piece 222 is parallel to the lower surface of the connecting piece 223. When using second mounting 22 to be connected slide rail 12 and wall body, the one side that is close to connection piece 223 with second stationary blade 222 and the one side butt of keeping away from the wall body of slide rail 12 that is close to the wall body, the one side and the wall body butt that first stationary blade 221 kept away from connection piece 223 are provided with third mounting 224 on the first stationary blade 221, third mounting 224 is towards the wall body, run through first stationary blade 221 and wall body threaded connection, thereby be connected slide rail 12 and wall body, improve the stability of slide rail 12 on the I-steel, improve the stability of expansion plate 4 simultaneously, and then improve the security of scaffold frame.

Referring to fig. 5, the supporting assembly 3 includes a bracket 31, four second driving members 32 and four supporting members 33, the bracket 31 is disposed on the ground, the supporting members 33 are abutted to the lower surface of the i-steel in a rectangular shape, the second driving members 32 are disposed between the supporting members 33 and the upper end of the bracket 31, the second driving members 32 are oil cylinders, the output ends of the second driving members 32 are fixedly connected to the supporting members 33 through bolts, and the housing is welded to the upper surface of the bracket 31. The supporting member 33 is used for supporting the i-steel, so that the supporting strength of the i-steel is improved, when the height of the bracket 31 is smaller than that of the i-steel to be supported, the second driving member 32 is driven, the second driving member 32 drives the supporting member 33 to move upwards until the supporting member 33 abuts against the bottom end of the i-steel, and the applicability of the supporting assembly 3 is improved.

The implementation principle of the overhanging scaffold in the embodiment of the application is as follows: when the scaffold is installed on the I-steel, the installation assembly 1 is placed above the I-steel to drive the first driving piece 113, the first driving piece 113 drives the two-way screw 111 to rotate, the two-way screw 111 drives the sliding block 13 in the sliding rail 12 provided with the two-way screw 111 to move oppositely, the sliding block 13 in the sliding rail 12 provided with the two-way screw 111 drives the connecting rod 14 to move oppositely, the connecting rod 14 drives the sliding block 13 in the sliding rail 12 provided with the guide rod 112 to move oppositely, so that the sliding block 13 clamps and pre-positions the I-steel, meanwhile, the expansion plate 4 forms an installation platform for installing a scaffold, when the clamping piece 212 is elastically clamped with the I-steel, the fixing hook 213 is rotated to elastically clamp the fixing column 214, meanwhile, the second fixing piece 22 is used for fixing the sliding rail 12 close to the wall, the sliding rail 12 is connected with the wall, and the stability of the sliding rail 12 on the I-steel is improved; after the sliding rail 12 is fixed, the supporting component 3 is placed below the I-steel, the supporting strength of the I-steel is improved, when the height of the support 31 is smaller than that of the I-steel to be supported, the second driving piece 32 is driven, the second driving piece 32 drives the supporting piece 33 to move upwards until the supporting piece 33 abuts against the bottom end of the I-steel, the strength of the I-steel is improved, the scaffold and the mounting seat 5 are mounted at last, and the scaffold can be mounted conveniently and simultaneously the safety of the scaffold is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a scaffold frame of encorbelmenting which characterized in that: the device comprises a mounting component (1) arranged on the I-steel, a fixing component (2) used for fixing the mounting component (1) and a supporting component (3) used for supporting the I-steel;

the supporting assembly (3) comprises a bracket (31), the bracket (31) is arranged on the ground, and the top of the bracket (31) is abutted against the bottom of the I-shaped steel;

the mounting assembly (1) comprises a moving part (11) and at least two sliding rails (12), wherein the sliding rails (12) are symmetrically arranged on the I-shaped steel, the sliding direction of the sliding rails (12) is parallel to the surface of a wall body, at least two sliding blocks (13) are connected in each sliding rail (12), the at least two sliding blocks (13) slide in opposite directions or opposite directions along the length direction of the sliding rails (12), a connecting rod (14) is connected between the two sliding blocks (13) which are positioned on the same side of the sliding rails (12) on two different sliding rails (12), one end of the connecting rod (14) is connected with one sliding block (13), the other end of the connecting rod is connected with the other sliding block (13), and the moving part (11) is used for driving the sliding blocks (13) to slide in opposite directions or opposite directions along the sliding rails (12);

at least one expansion plate (4) is arranged between the two connecting rods (14), one end of the at least one expansion plate (4) is connected with the side wall of one connecting rod (14), and the other end of the at least one expansion plate is connected with the side wall of the other connecting rod (14);

a plurality of mounting seats (5) are circumferentially arranged at intervals at the upper end of the telescopic plate (4), each mounting seat (5) comprises a mounting table (51) and a mounting pipe (52), each mounting table (51) is connected with the upper end of the telescopic plate (4), one end, far away from the telescopic plate (4), of each mounting table (51) is connected with the corresponding mounting pipe (52), and the axis of each mounting pipe (52) is perpendicular to the upper surface of the telescopic plate (4);

the fixing assembly (2) comprises a first fixing piece (21), and the first fixing piece (21) is used for fixing the sliding rail (12) on the I-shaped steel;

the first fixing piece (21) comprises a fixing base (211), a clamping piece (212), a fixing hook (213) and a fixing column (214); fixing base (211) are connected with slider (13) lower extreme, and joint spare (212) one end is rotated with fixing base (211) and is connected with the one end that slider (13) were kept away from, and the other end rotates with fixed hook (213) and is connected with the one end of keeping away from the hook mouth, and fixed column (214) are connected with the one end that slide rail (12) are close to fixed hook (213), and fixed hook (213) can be with fixed column (214) lock.

2. An overhanging scaffold according to claim 1, wherein: the moving part (11) comprises a bidirectional screw rod (111), a guide rod (112) and a first driving part (113); one end of a bidirectional screw (111) is rotatably connected with one side wall of one slide rail (12), the other end of the bidirectional screw is rotatably connected with the other side wall of one slide rail (12), one end of a guide rod (112) is connected with the side wall of the other slide rail (12), the other end of the guide rod is connected with the other side wall of the other slide rail (12), the axis of the bidirectional screw (111) and the axis of the guide rod (112) are parallel to the length direction of the slide rail (12), the output end of a first driving piece (113) is connected with the bidirectional screw (111), the first driving piece (113) is used for driving the bidirectional screw (111) to rotate, and a sliding block (13) is in threaded connection with the bidirectional screw (111).

3. An overhanging scaffold according to claim 1 wherein: the fixing assembly (2) further comprises a second fixing piece (22), and the second fixing piece (22) comprises a first fixing piece (221) and a second fixing piece (222); first stationary blade (221) sets up on the wall body, second stationary blade (222) sets up on slide rail (12) near the wall body, the one end butt of wall body is kept away from with slide rail (12) to second stationary blade (222), be connected with connection piece (223) between first stationary blade (221) and second stationary blade (222), connection piece (223) one end is kept away from the one end of wall body with first stationary blade (221) and is connected, the other end is connected near the one end of slide rail (12) with second stationary blade (222), be provided with third mounting (224) on first stationary blade (221), third mounting (224) are used for fixing first stationary blade (221) on the wall body.

4. An overhanging scaffold according to claim 1, wherein: the supporting assembly (3) further comprises a second driving piece (32) and a supporting piece (33), the supporting piece (33) is arranged below the I-steel, one end of the supporting piece (33) is abutted to the bottom of the I-steel, the other end of the supporting piece (33) is connected with the second driving piece (32), the second driving piece (32) is arranged between the supporting piece (33) and the support (31), the second driving piece (32) is connected to the top end of the support (31), and the second driving piece (32) is used for driving the supporting piece (33) to lift.