Safety protection device for building outer wall edge operation

Abstract

The present application relates to the technical fields of engineering operation safety protection, in particular to a kind of safety protection device for building outer wall edge operation, including support steel column, gyro wheel, connecting cross bar, No.1 protective plate, support cross bar, support plate, mobile support unit, anti-falling unit, safety rope fixing unit, support reinforcement unit.The existing scaffold needs to move scaffold position multiple times, which leads to low work efficiency.Workers cannot adjust the position after falling, which is easy to be injured again, and there may be problems of high-altitude falling objects injuring people and damaging scaffolds.The mobile support unit, anti-falling unit and safety rope fixing unit of the safety protection device for building outer wall edge operation can increase the working area and improve the work efficiency, can pull the accidentally fallen workers back to the safe position, avoid secondary injury, and the large support area is more stable, which can avoid the problems of high-altitude falling objects injuring people and damaging scaffolds.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering operation safety protection, in particular to a safety protection device for building outer wall edge operation. BACKGROUND

[0002] Building outer wall edge operation is a very common form of operation in construction. Edge operation refers to the construction or maintenance operation on the edge of the building outer wall or structure, which may involve the installation of outer wall materials, cleaning, painting, maintenance, etc.; when performing edge operation, workers usually need to use safety belts, scaffolds, safety nets, guardrails and other equipment to ensure their safety when working at height.

[0003] Mobile scaffolds play a crucial role in building outer wall edge operation, mainly including the following aspects of application: safe operation platform, edge protection, floor height adjustment, material and equipment placement, construction convenience. When using mobile scaffolds, the construction party needs to strictly follow safety specifications and operation guidelines for construction and operation to ensure the stability and safety of the scaffold.

[0004] The existing scaffold may have the problem that the work area is not easy to contact the work object due to limited installation space, and usually needs to move the scaffold position multiple times to continue high-altitude operation, resulting in low work efficiency; and the worker uses the conventional safety rope buckle method, which may cause the worker to be injured by the safety rope when waiting for rescue after accidentally falling, and the problem of secondary injury caused by high-altitude falling objects; there may also be the problems of high-altitude falling objects injuring people and damaging the scaffold during construction. SUMMARY

[0005] The technical problem to be solved: the safety protection device for building outer wall edge operation provided by the present application can solve the above-mentioned problems.

[0006] Technical scheme: In order to achieve the above purpose, the present application adopts the following technical scheme, a safety protection device for building outer wall edge operation, comprising a plurality of support steel columns arranged in a matrix for erecting a scaffold, the lower end of the support steel column is provided with a roller, and a connecting cross bar is installed on the upper side of the roller between two adjacent support steel columns, a plurality of support steel columns are provided with a No. 1 protection plate at the upper end, two support cross bars are connected between the front and rear two support steel columns on the left and right sides, two support cross bars on the left and right sides are provided with a support plate, a mobile support unit is installed on the upper support plate, a falling prevention unit is installed on the No. 1 protection plate, a safety rope fixing unit is installed on the upper side of the two support steel columns on the rear side, and a support reinforcement unit is installed between the front and rear sides of the plurality of support steel columns.

[0007] The mobile support unit comprises a first vertical plate symmetrically installed in the middle of the upper end of the upper support plate, and a second vertical plate symmetrically installed on the upper end of the upper support plate on the left and right, a plurality of guide wheels are uniformly installed on the upper end of the first vertical plate, a plurality of bearing wheels are symmetrically installed on the opposite ends of the two second vertical plates, a sliding plate is slidably installed on the first vertical plate and the second vertical plate, a rack is installed on the middle of the lower end of the sliding plate, and a plurality of bearing wheels and a plurality of guide wheels are slidably connected in the avoiding sliding holes on the left and right ends and the lower end of the sliding plate, a first reversible motor is installed on the left end of the left second vertical plate through a motor base, a transmission shaft is connected to the output shaft of the first reversible motor and rotates through the left second vertical plate, the transmission shaft is rotatably installed on the right second vertical plate, and a rotating shaft is rotatably installed on the rear side of the two second vertical plates corresponding to the transmission shaft, a gear column is installed on the middle of the transmission shaft and the rotating shaft, the front and rear gear columns are engaged with the rack, a belt pulley is arranged on the left and right sides of the transmission shaft and the rotating shaft, and a belt is arranged on the front and rear belt pulleys on the left and right sides.

[0008] Preferably, the safety rope fixing unit comprises two guardrail crossbars symmetrically installed between the two adjacent support steel columns, and a safety rope winding mechanism is installed on the two guardrail crossbars on the rear side.

[0009] Preferably, the anti-falling unit comprises a waist-shaped sliding groove symmetrically formed in the left and right of a first protective plate, a linkage sliding plate is slidably installed on the upper end of the first protective plate, an extension plate flush with the front end of the linkage sliding plate is installed on the front end of the sliding plate, a plurality of connecting columns are installed on the upper end of the sliding plate and the extension plate along the matrix, the upper ends of the two connecting columns on the rear side are slidably connected in the waist-shaped sliding groove, the upper ends of the plurality of connecting columns are connected to the linkage sliding plate, a plurality of support columns are installed on the upper end of the linkage sliding plate along the matrix, a second protective plate is installed on the upper ends of the plurality of support columns, a first support inclined rod is installed between the two adjacent support columns, the installation directions of the plurality of first support inclined rods on the opposite ends of the plurality of support columns are opposite, a connecting plate is symmetrically installed on the lower end of the second protective plate, a reinforcing link is installed on the upper end of each of the plurality of support columns on the left and right sides and connected to the connecting plate, and two reinforcing links are installed on the upper end of each of the two support columns in the middle and connected to the two connecting plates.

[0010] Preferably, the safety rope winding mechanism comprises two clamping plates symmetrically arranged on the upper and lower rear side guardrails, the number of the clamping plates is two, the left clamping plate is provided with a second reversible motor at the left end through a motor base, the output shaft of the second reversible motor is rotatably connected with a driving shaft penetrating through the left clamping plate, the outer wall of the driving shaft is symmetrically provided with a matching sliding block, the left end of the right clamping plate is rotatably provided with a driven shaft sleeve, the inner wall of the driven shaft sleeve is symmetrically provided with a matching sliding groove corresponding to the two matching sliding blocks, the matching sliding blocks are slidably connected in the matching sliding grooves, the outer wall of the driven shaft sleeve is slidably provided with a winding drum, the outer wall of the winding drum is symmetrically provided with a clasp ring, the front lower side guardrail is symmetrically provided with two groups of limiting pieces corresponding to the positions of the winding drums, each group of limiting pieces comprises two corresponding limiting pull rods, the upper opposite ends of the two corresponding limiting pull rods are symmetrically provided with movable sliding grooves, a rectangular slide plate is slidably arranged in the two movable sliding grooves, and the upper and lower ends of one side of the rectangular slide plate are both chamfered, and the other side of the rectangular slide plate is connected to the corresponding limiting pull rod through a compression spring.

[0011] Preferably, the clamping mechanism comprises a double-shaft motor mounted at the lower end of the first protective plate through a motor base, and the two output shafts of the double-shaft motor are respectively connected with lead screws with opposite rotation directions, and the left and right lead screws are respectively connected with the clamping plates on the same side through threads.

[0012] Preferably, the support reinforcing unit comprises a plurality of mounting round rods arranged in a triangular arrangement on the front and rear support steel columns, the mounting round rods on the left and right adjacent two support steel columns are connected with second support inclined rods, the plurality of second support inclined rods form a triangular structure, and the plurality of second support inclined rods on the front and rear sides are arranged in an oblique symmetry, and the support steel column is further provided with an outer support rod.

[0013] Preferably, the outer walls of the support steel columns on the front left and right sides are both provided with a first ladder, the outer walls of the support steel columns on the rear left and right sides are both provided with a second ladder, the first ladder and the second ladder opposite to each other are in the same plane, and the first ladder is located below the second ladder.

[0014] Beneficial effects: 1. The mobile supporting unit of the safety protection device for building outer wall edge operation can drive the workers to move forward, effectively increase the working area, avoid the problem that the workers cannot effectively approach the work object due to limited space, and effectively improve the work efficiency without the workers moving the scaffold multiple times.

[0015] 2. The safety rope winding mechanism of the building outer wall edge operation safety protection device can be matched with the clamping mechanism, the safety rope winding drum can be freely replaced, the worker who falls by accident can be pulled back to a safe position, the problem that the worker is injured by the safety rope when waiting for rescue and the secondary injury caused by high-altitude falling objects can be avoided, and the support area is larger and more stable compared with the single position of the conventional safety rope buckle.

[0016] 3. The anti-falling unit of the building outer wall edge operation safety protection device can shield the high-altitude falling object for the worker on the sliding plate, and after the second protection plate moves out, the first protection plate can also have a certain high-altitude falling object protection effect, so as to avoid the problem that the complex construction environment causes high-altitude falling object injury and damage to the scaffold. BRIEF DESCRIPTION OF DRAWINGS

[0017] The application will be further described below in combination with the drawings and examples.

[0018] Figure 1 is a perspective structural schematic diagram of the application.

[0019] Figure 2 is a front view of the application.

[0020] Figure 3 is a front view of the application.

[0021] Figure 4 is a left view of the application.

[0022] Figure 5 is a partial cross-sectional perspective structural schematic diagram of the moving bearing unit of the application.

[0023] Figure 6 is a partial cross-sectional perspective structural schematic diagram of the safety rope fixing unit of the application (implicit winding drum).

[0024] Figure 7 is an enlarged view of A in the application. Figure 6

[0025] Figure 8 is an enlarged view of B in the application. Figure 6

[0026] Figure 9 is a partial cross-sectional perspective structural schematic diagram of the anti-falling unit of the application.

[0027] ​​In the figure: 1, support steel column; 2, roller; 3, connecting crossbar; 4, No. 1 guard plate; 5, support crossbar; 6, support plate; 7, moving support unit; 71, No. 1 vertical plate; 72, No. 2 vertical plate; 73, guide wheel; 74, bearing wheel; 75, sliding plate; 76, rack; 77, avoiding sliding hole; 78, No. 1 forward and reverse motor; 79, transmission shaft; 80, rotating shaft; 81, gear column; 82, pulley; 83, belt; 9, safety rope fixing unit; 91, guardrail crossbar; 92, safety rope winding mechanism; 921, clamping plate; 922, No. 2 forward and reverse motor; 923, driving shaft; 924, matching sliding block; 925, driven shaft sleeve; 926, matching sliding groove; 927, winding drum; 928, snap ring; 929, limiting pull rod; 930, movable sliding groove; 931, rectangular sliding plate; 932, compression spring; 94, clamping mechanism; 941, double-shaft motor; 942, lead screw; 10, support reinforcement unit; 101, mounting round rod; 102, No. 2 support inclined rod; 103, outer support rod; 11, anti-falling unit; 111, waist-shaped sliding groove; 112, linkage sliding plate; 113, extension plate; 114, connecting upright column; 115, support upright column; 116, No. 2 guard plate; 117, No. 1 support inclined rod; 118, connecting plate; 119, reinforcement connecting rod; 12, No. 1 crawling ladder; 13, No. 2 crawling ladder. DETAILED DESCRIPTION

[0028] The embodiments of the present application will be described in detail below with reference to the accompanying drawings, but the present application can be implemented in various different ways limited and covered by the claims.

[0029] Reference Figure 1 A safety protection device for building outer wall edge operation, comprising a plurality of support steel columns 1 arranged in a matrix for erecting a scaffold, the lower end of the support steel column 1 is provided with a roller 2, and a connecting crossbar 3 is arranged on the upper side of the roller 2 between two adjacent support steel columns 1, a No. 1 guard plate 4 is arranged at the upper end of the plurality of support steel columns 1, two support crossbars 5 are connected between the front and rear two support steel columns 1 on the left and right sides, and the left and right two support crossbars 5 are jointly provided with a support plate 6, a moving support unit 7 is arranged on the upper support plate 6, an anti-falling unit 11 is arranged on the No. 1 guard plate 4, a safety rope fixing unit 9 is arranged on the upper side of the two support steel columns 1 on the rear side, and a support reinforcement unit 10 is arranged between the front and rear two support steel columns 1.

[0030] Reference Figure 1 , Figure 2 and Figure 4The support reinforcing unit 10 comprises a plurality of mounting round rods 101 arranged in a triangular manner on the front and rear support steel columns 1, the mounting round rods 101 on two adjacent support steel columns 1 on the left and right are connected with No. 2 support inclined rods 102, a plurality of No. 2 support inclined rods 102 form a triangular structure, and the plurality of No. 2 support inclined rods 102 on the front and rear sides are arranged in an oblique symmetry, and the outer wall of the support steel column 1 is further provided with an outer support rod 103.

[0031] Referring to Figure 1 and Figure 6 The safety rope fixing unit 9 comprises two guardrail cross bars 91 symmetrically arranged between two adjacent support steel columns 1, the two guardrail cross bars 91 on the rear side are jointly provided with a safety rope winding mechanism 92, and the safety rope winding mechanism 92 is provided with a clamping mechanism 94 on the upper side.

[0032] Referring to Figure 1 and Figure 4 The outer wall of the support steel column 1 on the front left side is provided with a No. 1 ladder 12, and the outer wall of the support steel column 1 on the rear left side is provided with a No. 2 ladder 13, the No. 1 ladder 12 and the No. 2 ladder 13 opposite to each other are in the same plane, and the No. 1 ladder 12 is located below the No. 2 ladder 13.

[0033] Firstly, the required scaffold is built according to the high-altitude operation position and height by manual work, the plurality of support steel columns 1 are supported and reinforced by the plurality of No. 2 support inclined rods 102 and the plurality of outer support rods 103, the workers can climb to the lower guardrail cross bar 91 through the No. 1 ladder 12 and the No. 2 ladder 13, the support reinforcing unit 10 can support and reinforce the plurality of support steel columns 1, so as to avoid the problem that the plurality of support steel columns 1 are not stable when the workers work at high altitude, and the workers fall down.

[0034] Referring to Figures 3-5 and Figure 9The moving support unit 7 comprises a first vertical plate 71 symmetrically installed in the middle of the upper end of the upper support plate 6, and a second vertical plate 72 symmetrically installed on the upper end of the upper support plate 6, a plurality of guide wheels 73 are uniformly installed on the upper end of the first vertical plate 71, a plurality of load wheels 74 are uniformly installed on the upper side of the opposite ends of the left and right second vertical plates 72, a sliding plate 75 is slidably installed on the first vertical plate 71 and the second vertical plate 72, a rack 76 is installed on the middle of the lower end of the sliding plate 75, and a plurality of load wheels 74 and a plurality of guide wheels 73 are slidably connected in the avoiding sliding hole 77, a first forward and reverse motor 78 is installed on the left end of the left second vertical plate 72 through a motor base, the output shaft of the first forward and reverse motor 78 is rotatably connected with a transmission shaft 79, the transmission shaft 79 is rotatably installed on the right second vertical plate 72, and a rotating shaft 80 is rotatably installed on the rear side of the left and right second vertical plates 72 corresponding to the position of the transmission shaft 79, a gear column 81 is installed on the middle of the transmission shaft 79 and the rotating shaft 80, the front and rear gear columns 81 are engaged with the rack 76, a belt wheel 82 is sleeved on the left and right sides of the transmission shaft 79 and the rotating shaft 80, and a belt 83 is sleeved on the front and rear belt wheels 82 on the left and right sides.

[0035] When the workers climb to the sliding plate 75 through the first and second ladders 12 and 13, when the working area formed by the plurality of guardrails 91 is not convenient for the work objects required to be touched in high-altitude operation, the belt wheel 82 and the belt 83 are driven by the first forward and reverse motor 78 to drive the transmission shaft 79 and the rotating shaft 80 to rotate synchronously and slowly, the transmission shaft 79 and the rotating shaft 80 drive the sliding plate 75 to move forward slowly through the gear column 81 and the rack 76, until the front end of the sliding plate 75 is located at a position sufficient to touch the work objects, during which the workers can squat at the front end of the sliding plate 75 and move over the front lower guardrail 91 to perform high-altitude operation on the objects that are not easy to touch, and after the workers complete the operation, the sliding plate 75 can be returned to the original position by the first forward and reverse motor 78, the moving support unit 7 can drive the workers to move forward, effectively increasing the working area, avoiding the problem that the workers cannot effectively approach the work objects due to limited space, without the workers moving the scaffold multiple times, effectively improving the work efficiency.

[0036] Referring to Figure 2 , Figure 3 and Figures 6-8The safety rope winding mechanism 92 comprises clamping plates 921 symmetrically installed on the upper and lower guardrails 91, the number of the clamping plates 921 is two, the left clamping plate 921 is provided with a second forward-reverse motor 922 at the left end through a motor base, the output shaft of the second forward-reverse motor 922 is provided with a driving shaft 923 which is connected with the left clamping plate 921, the outer wall of the driving shaft 923 is symmetrically provided with matching sliding blocks 924, the right clamping plate 921 is provided with a driven shaft sleeve 925 at the left end, the inner wall of the driven shaft sleeve 925 is symmetrically provided with matching sliding grooves 926 corresponding to the two matching sliding blocks 924, the matching sliding blocks 924 are slidably connected in the matching sliding grooves 926, the outer wall of the driven shaft sleeve 925 is slidably provided with a winding drum 927, the outer wall of the winding drum 927 is symmetrically provided with clamping rings 928, the guardrail 91 at the front lower side is symmetrically provided with two groups of limiting parts corresponding to the position of the winding drum 927, each group of limiting parts comprises two corresponding limiting pull rods 929, the upper opposite ends of the two corresponding limiting pull rods 929 are symmetrically provided with movable sliding grooves 930, a rectangular slide plate 931 is slidably installed in the two movable sliding grooves 930, and the upper and lower ends of one side of the rectangular slide plate 931 are bevelled, the other side of the rectangular slide plate 931 is connected to the corresponding limiting pull rod 929 through a compression spring 932.

[0037] With reference to Figure 3 , Figure 4 and Figure 6 , the clamping mechanism 94 comprises a double-shaft motor 941 installed at the lower end of the first protective plate 4 through a motor base, two output shafts of the double-shaft motor 941 are respectively connected with screw rods 942 with opposite rotation directions, and the left and right screw rods 942 are respectively connected to the same side clamping plate 921 through threads.

[0038] When the worker climbs to the lower guardrail crossbar 91 through the first ladder 12 and the second ladder 13, the double-shaft motor 941 controls the left and right lead screws 942 to drive the corresponding clamping plates 921 away from each other, the worker installs the winding drum 927 on the passive shaft sleeve 925, the double-shaft motor 941 controls the left and right lead screws 942 to drive the corresponding clamping plates 921 to move close to each other, until the left and right clamping plates 921 movably clamp the winding drum 927, at this time the winding drum 927 can rotate with the passive shaft sleeve 925, and under the action of the sliding block 924 and the matching sliding groove 926, the driving shaft 923 is slidingly connected in the passive shaft sleeve 925, before the sliding plate 75 moves forward under the control of the first forward and reverse motor 78, the worker needs to buckle one end of the safety rope on the clasp ring 928 on the winding drum 927, after the worker crosses the front lower guardrail crossbar 91, the safety rope is buckled into two corresponding limiting pull rods 929, at this time under the action of the compression spring 932, the safety rope extrudes the rectangular sliding plate 931 and is buckled into the two corresponding limiting pull rods 929, and the other end is buckled on the worker himself, the second forward and reverse motor 922 controls the driving shaft 923 to drive the passive shaft sleeve 925 to rotate, the passive shaft sleeve 925 drives the winding drum 927 to tighten the safety rope until the safety rope is at a safe length, when the worker falls by accident, the second forward and reverse motor 922 controls the winding drum 927 to rotate to pull the worker up to a safe position, when multiple workers need to perform high-altitude work at the same time, the double-shaft motor 941 controls the left and right clamping plates 921 to move away from each other to replace the winding drum 927 with wider width and more clasp rings 928, the safety rope winding mechanism 92 cooperates with the clamping mechanism 94 to freely replace the safety rope winding drum, and can also pull the worker who falls by accident back to a safe position, avoiding the problem that the worker may be injured by the safety rope when waiting for rescue, and secondary injury caused by high-altitude falling objects, and compared with the conventional safety rope buckle single position support area is larger more stable.

[0039] Referring to Figure 3 , Figure 4 and Figure 9The anti-falling unit 11 comprises a waist-shaped sliding groove 111 symmetrically opened on the left and right of the first protective plate 4, a linkage sliding plate 112 slidably installed at the upper end of the first protective plate 4, an extension plate 113 installed at the front end of the sliding plate 75 and flush with the front end of the linkage sliding plate 112, a plurality of connecting columns 114 jointly installed at the upper end of the sliding plate 75 and the extension plate 113 along a matrix, the upper ends of the two connecting columns 114 located at the rear side are slidably connected in the waist-shaped sliding groove 111, and the upper ends of the plurality of connecting columns 114 are connected to the linkage sliding plate 112, a plurality of supporting columns 115 are installed at the upper end of the linkage sliding plate 112 along a matrix, a second protective plate 116 is jointly installed at the upper end of the plurality of supporting columns 115, a first supporting inclined rod 117 is installed between adjacent two supporting columns 115, the installation directions of the plurality of first supporting inclined rods 117 at the opposite ends of the plurality of supporting columns 115 are opposite, a connecting plate 118 is symmetrically installed at the lower end of the second protective plate 116, a reinforcing connecting rod 119 connected to the connecting plate 118 is installed at the upper end of each of the plurality of supporting columns 115 located at the left and right sides, and two reinforcing connecting rods 119 connected to the two connecting plates 118 respectively are installed at the upper end of each of the two supporting columns 115 located at the middle.

[0040] When the sliding plate 75 is controlled to move forward by the first forward-reverse motor 78, the sliding plate 75 drives the linkage sliding plate 112 to move forward through the plurality of connecting columns 114, the linkage sliding plate 112 drives the second protective plate 116 to move forward through the plurality of supporting columns 115, thereby realizing the effect that the second protective plate 116 always moves with the sliding plate 75 to prevent high-altitude falling objects on the sliding plate 75, and the second protective plate 116 is supported and reinforced by the plurality of first supporting inclined rods 117 and the reinforcing connecting rods 119. When the sliding plate 75 is controlled to return to the original position by the first forward-reverse motor 78 after the work of the worker is completed, the sliding plate 75 drives the linkage sliding plate 112 to move backward through the plurality of connecting columns 114, the linkage sliding plate 112 drives the second protective plate 116 to move backward through the plurality of supporting columns 115 to return to the original position, the worker can take out the safety rope located in the two corresponding limiting pull rods 929 by extruding the rectangular sliding plate 931 upward, and finally the safety rope at both ends is released, and the worker can climb down the scaffold through the first and second ladders 12 and 13. The anti-falling unit 11 can shield high-altitude falling objects for the worker on the sliding plate 75, and after the second protective plate 116 is moved out, the first protective plate 4 can also have a certain effect of preventing high-altitude falling objects, thereby avoiding the problem of injury and damage to the scaffold caused by high-altitude falling objects in a complex construction environment.

[0041] In the description of the embodiments of the present application, it should be noted that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the embodiments of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, in the description of the present application, unless otherwise specified and limited, the terms "a plurality of", "a plurality of", "a plurality of" mean two or more.

[0042] In the description of the present application, it should also be noted that, unless otherwise specified and limited, the terms "set", "connected", "mounted", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] The embodiments of the present application are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A safety protection device for building outer wall edge work, comprising a plurality of support steel columns (1) arranged in a matrix for erecting a scaffold, characterized in that, The lower end of the support steel column (1) is provided with a roller (2), and a connecting cross bar (3) is arranged on the upper side of the roller (2) between two adjacent support steel columns (1); the upper ends of a plurality of support steel columns (1) are jointly provided with a first protective plate (4); two support cross bars (5) are connected between the front and rear support steel columns (1) on the left and right sides; support plates (6) are jointly arranged on the left and right opposite support cross bars (5); a moving support unit (7) is arranged on the upper support plate (6); a falling object prevention unit (11) is arranged on the first protective plate (4); a safety rope fixing unit (9) is jointly arranged on the upper sides of the two rear support steel columns (1); and support reinforcement units (10) are arranged between the front and rear support steel columns (1) on the left and right sides. The moving support unit (7) comprises a first vertical plate (71) symmetrically arranged on the upper end of the support plate (6); second vertical plates (72) are symmetrically arranged on the upper end of the support plate (6); a plurality of guide wheels (73) are uniformly arranged on the upper end of the first vertical plate (71); a plurality of bearing wheels (74) are uniformly arranged on the upper sides of the opposite ends of the left and right second vertical plates (72); a sliding plate (75) is slidably arranged on the first vertical plate (71) and the second vertical plate (72); a rack (76) is arranged on the middle of the lower end of the sliding plate (75); avoiding sliding holes (77) are formed in the left and right ends and the lower end of the sliding plate (75) corresponding to the plurality of bearing wheels (74) and the plurality of guide wheels (73); the plurality of bearing wheels (74) and the plurality of guide wheels (73) are slidably connected in the avoiding sliding holes (77); a first forward and reverse motor (78) is arranged on the left end of the left second vertical plate (72) through a motor base; the output shaft of the first forward and reverse motor (78) is rotatably connected with a transmission shaft (79) penetrating through the left second vertical plate (72); the transmission shaft (79) is rotatably arranged on the right second vertical plate (72); rotating shafts (80) are rotatably arranged on the rear sides of the left and right second vertical plates (72) corresponding to the transmission shaft (79); gear columns (81) are arranged on the middle portions of the transmission shaft (79) and the rotating shaft (80); the front and rear gear columns (81) are engaged with the rack (76); belt pulleys (82) are arranged on the left and right sides of the transmission shaft (79) and the rotating shaft (80); and a belt (83) is jointly arranged on the front and rear belt pulleys (82) on the left and right sides. The anti-falling unit (11) includes a waist-shaped sliding groove (111) symmetrically opened on the left and right of the first protective plate (4), a linkage sliding plate (112) is slidably installed on the upper end of the first protective plate (4), an extension plate (113) flush with the front end of the linkage sliding plate (112) is correspondingly installed on the front end of the sliding plate (75), a plurality of connecting columns (114) are jointly installed on the upper end of the sliding plate (75) and the extension plate (113) along the matrix, the upper ends of the two connecting columns (114) located on the rear side are slidably connected in the waist-shaped sliding groove (111), the upper ends of the plurality of connecting columns (114) are connected to the linkage sliding plate (112), a plurality of supporting columns (115) are installed on the upper end of the linkage sliding plate (112) along the matrix, a second protective plate (116) is jointly installed on the upper ends of the plurality of supporting columns (115), a first supporting inclined rod (117) is installed between every two adjacent supporting columns (115), the installation directions of the plurality of first supporting inclined rods (117) at the opposite ends of the plurality of supporting columns (115) are opposite, a connecting plate (118) is symmetrically installed on the lower end of the second protective plate (116), a reinforcing connecting rod (119) connected to the connecting plate (118) is installed on the upper end of each of the plurality of supporting columns (115) located on the left and right sides, and two reinforcing connecting rods (119) connected to the two connecting plates (118) respectively are installed on the upper end of each of the two supporting columns (115) located in the middle.

2. The safety guard for use in an outer wall of a building according to claim 1, wherein: The safety rope fixing unit (9) includes two guardrail cross bars (91) symmetrically installed between the two adjacent supporting steel columns (1), the upper and lower two guardrail cross bars (91) located on the rear side are jointly installed with a safety rope winding mechanism (92), and the upper side of the safety rope winding mechanism (92) is installed with a clamping mechanism (94).

3. The safety guard for use in an outer wall of a building according to claim 2, wherein: The safety rope winding mechanism (92) comprises clamping plates (921) symmetrically arranged on the upper and lower rear side guardrails, the number of the clamping plates (921) is two, a left clamping plate (921) is provided with a second reversible motor (922) through a motor base at the left end, the output shaft of the second reversible motor (922) is rotatably connected with a driving shaft (923) penetrating through the left clamping plate (921), the outer wall of the driving shaft (923) is symmetrically provided with matching sliding blocks (924), a passive shaft sleeve (925) is rotatably arranged at the left end of the right clamping plate (921), the inner wall of the passive shaft sleeve (925) is symmetrically provided with matching sliding grooves (926) corresponding to the two matching sliding blocks (924), the matching sliding blocks (924) are slidably connected in the matching sliding grooves (926), the outer wall of the passive shaft sleeve (925) is slidably provided with a winding drum (927), the outer wall of the winding drum (927) is symmetrically provided with snap rings (928), the front lower guardrail is symmetrically provided with two groups of limiting members corresponding to the positions of the winding drum (927), each group of limiting members comprises two corresponding limiting pull rods (929), the upper opposite ends of the two corresponding limiting pull rods (929) are symmetrically provided with movable sliding grooves (930), and the two movable sliding grooves (930) are commonly provided with a rectangular sliding plate (931) slidably arranged therein, and the upper and lower ends of one side of the rectangular sliding plate (931) are chamfered, and the other side of the rectangular sliding plate (931) is connected to the corresponding limiting pull rod (929) through a compression spring (932).

4. The safety guard for use in an outer wall of a building according to claim 3, wherein: The clamping mechanism (94) comprises a double-shaft motor (941) mounted on the lower end of the first protective plate (4) through a motor base, and the two output shafts of the double-shaft motor (941) are respectively connected with screw rods (942) with opposite rotation directions, and the left and right screw rods (942) are respectively connected with the same side clamping plates (921) through threads.

5. The safety guard for use in an outer wall of a building according to claim 4, wherein: The support reinforcing unit (10) comprises a plurality of mounting round rods (101) arranged in a triangular arrangement on the front and rear support steel columns (1), and the mounting round rods (101) on the left and right adjacent two support steel columns (1) are connected with second support inclined rods (102), a plurality of second support inclined rods (102) form a triangular structure, and the plurality of second support inclined rods (102) on the front and rear sides are diagonally symmetrically arranged, and the support steel column (1) is further provided with an outer support rod (103).

6. The safety guard for use in an outer wall of a building according to claim 1, wherein: The outer walls of the support steel columns (1) on the front and left and right sides are respectively provided with a first climbing ladder (12), and the outer walls of the support steel columns (1) on the rear and left and right sides are respectively provided with a second climbing ladder (13), the first climbing ladder (12) and the second climbing ladder (13) opposite to each other are located in the same plane, and the first climbing ladder (12) is located below the second climbing ladder (13).

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