A method for preventing falling in construction

Abstract

The invention discloses a method for preventing falling for construction, and relates to the field of construction protection, comprising the following steps: step one, installation of an anti-falling device, using a crane to raise the device to a window on an outer wall of a building, construction workers pulling a lower top plate and an upper top plate into the window, and then starting a hydraulic cylinder so that the two top plates are in close contact with the upper and lower walls of the window respectively; step two, preventing falling, after installation, the load-bearing plate is retracted into the lower top plate, and construction workers at high altitudes are protected by a first protection net on a protection frame, and when a person falls, he or she will fall onto the first protection net; step three, reeling, after the person is rescued, the horizontal bevel gear can be meshed and connected with the vertical bevel gear of the protection component by pushing a rotary handle, the application can improve the firmness of the installation, and the installation is also more convenient, reducing the danger during installation, and the retractable load-bearing plate can avoid the possibility of falling objects falling onto the load-bearing plate.

Description

Technical Field

[0001] The invention mainly relates to the technical field of building construction protection, and specifically to a falling prevention method for building construction. Background Art

[0002] During construction, construction workers need to work at high altitudes, which is extremely dangerous. In order to protect the lives of the workers and the safety of construction workers below or people passing by on the ground, a safety anti-fall net will be installed on the outer wall of the building.

[0003] The anti-fall device for construction described in the prior art includes a mounting plate connected to the outer wall of the building, a first anti-fall part is rotatably connected to the outer side of the mounting plate, a second anti-fall part is rotatably connected to the upper side of the first anti-fall part, a connecting frame is provided on the upper front side of the mounting plate, and a plurality of parallel anti-fall ropes are connected between the second anti-fall part and the connecting frame.

[0004] Although the above technology can prevent workers from causing serious physical injuries when colliding with hard supports when falling, and further cushion the workers and reduce the harm caused by falling to workers, during installation, construction workers are required to operate on the exterior wall, and there is still a risk of falling from a height. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a fall prevention method for construction to solve the technical problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A fall prevention method for construction, comprising the following steps:

[0008] Step 1: Installation of the anti-fall device: Use a crane to raise the device to the window of the building's exterior wall. The construction workers pull the lower top plate and the upper top plate into the window, and then start the hydraulic cylinder to make the two top plates closely contact the upper and lower walls of the window respectively. At the same time, the ear plate, the fixing plate and the mounting plate are in contact with the surface of the building's exterior wall respectively. At this time, the driving motor pushes the load-bearing plate in the load-bearing assembly out of the lower top plate, making it convenient for the construction workers to stand and fix the ear plate and the mounting plate on the building's exterior wall;

[0009] Step 2: Anti-falling: After installation, the load-bearing plate is put into the lower top plate, and the construction personnel at high altitude are protected by the first protection net on the protection frame. When the personnel fall, they will fall on the first protection net, and under the action of the falling force, the first protection net will be stretched and contacted with the air cushion below, and the protection component will be activated, so that the second protection net will extend from the load-bearing plate and unfold on the first protection net;

[0010] Step three, reeling in. After the person is rescued, the horizontal bevel gear can be engaged and connected with the vertical bevel gear of the protection component by pushing the rotary handle, and then the rotation can drive the reeling shaft to rotate to retract the unfolded second protection net for continued use.

[0011] Specifically, an upper top plate is arranged directly above the lower top plate, hydraulic cylinders are symmetrically fixed on the upper surface of the lower top plate, the telescopic ends of the two hydraulic cylinders are fixedly connected to the lower surface of the upper top plate, the lower surface of the lower top plate and the upper surface of the upper top plate are tightly abutted against the upper and lower outer walls of the window, and the outer walls of the lower top plate and the upper top plate are respectively provided with ear plates and mounting plates, and the two ear plates and the mounting plate are fixedly connected to the surface of the building's outer wall;

[0012] The lower surface of the end of the lower top plate and the lower surfaces of the two ear plates are integrally connected with a fixing plate, a receiving groove is provided at the end of the lower top plate, and limiting slide grooves are provided on both side walls of the receiving groove, grooves and square slide grooves are symmetrically provided on both sides of the inner wall of the receiving groove, and a square slot is provided at the inner center of the receiving groove, the load-bearing component is arranged in the storage slot, a driving motor is fixedly installed at the center of one end of the lower top plate away from the ear plate, the output end of the driving motor passes through the square slot and is fixedly connected with a screw rod, a square sleeve is sleeved on the screw rod, and the end of the square sleeve is fixedly connected to the load-bearing plate included in the load-bearing component;

[0013] A winding groove is provided at the end of the load-bearing plate, an end plate is provided at the end of the winding groove, and a protective component is provided in the winding groove, and the protective component of the protective component is connected to the end plate. A bottom plate is provided under the protective frame, and a lower pressure groove is provided on the upper surface of the bottom plate, and a lower pressure plate is provided in the lower pressure groove, and an air cushion is bonded to the upper surface of the lower pressure plate.

[0014] The technical solution is specific, and limiting sliders are welded to both side walls of the end of the load-bearing plate located in the storage groove, and the two limiting sliders are slidably connected to the limiting slide grooves, and pneumatic telescopic cylinders and square sliding rods are fixedly installed on both sides of the end of the load-bearing plate, the telescopic ends of the two pneumatic telescopic cylinders pass through the load-bearing plate and are fixedly connected to the end plate, and the bottom ends of the two pneumatic telescopic cylinders match the grooves, and the two square sliding rods match the square slide grooves.

[0015] Specifically, the outer wall of the fixed plate is fixedly mounted with a protective frame, a first protective net is fixedly mounted on the protective frame, and movable grooves are provided on upper surfaces of both sides of the protective frame.

[0016] Specifically, the technical solution of the present invention is that inclined support rods are welded on both sides of the end plate, movable sliders are welded on the bottom ends of the two support rods, and the two movable sliders are slidably connected to the movable groove.

[0017] Specifically, the protective component includes a winding shaft arranged in a winding groove, a second protective net is wound on the winding shaft, an end of the second protective net is fixedly connected to the end plate, an L-shaped rotating cavity is opened in the load-bearing plate on one side of the winding groove, one end of the winding shaft is rotatably connected to the winding groove, and the other end of the winding shaft passes through the rotating cavity and is rotatably connected to the cavity wall.

[0018] The technical solution is specific, a first sprocket is fixedly installed on the outer wall of the end portion of the winding shaft located in the rotating chamber, a horizontal transmission shaft is provided on the other side of the rotating chamber, both ends of the transmission shaft are rotatably connected to the chamber wall of the rotating chamber, a second sprocket and a vertical bevel gear are fixedly installed on the outer walls of both ends of the transmission shaft respectively, the second sprocket is connected to the first sprocket through a transmission chain, the diameter of the second sprocket is smaller than the diameter of the first sprocket, and one side tooth surface of the vertical bevel gear passes through the rotating chamber and is located in the storage groove.

[0019] The technical solution is specific, and a transverse bevel gear is provided on one side of the vertical bevel gear in the storage groove, and a rotating shaft is passed through the center of the transverse bevel gear. The rotating shaft passes through the lower top plate and extends to the outside and is welded with a rotating handle. A limiting plate is fixedly installed on the rotating shaft on one side of the transverse bevel gear, and the groove walls of the storage groove are located on both sides of the rotating shaft. An iron sheet is embedded in the outer wall of the limiting plate, and the two electromagnets are magnetically adsorbed and connected to the iron sheet.

[0020] Specifically, the outer wall of the lower pressure plate is connected to the inner wall of the lower pressure groove in a sliding manner, a plurality of contact switches are fixedly installed on the bottom of the lower pressure groove, and a plurality of contact blocks are fixedly installed on the lower surface of the lower pressure plate, and the plurality of contact blocks correspond to the plurality of contact switches.

[0021] Specifically, the lower surface of the lower pressure plate is provided with a return spring on one side of the multiple contact blocks, and the two ends of the multiple return springs are respectively fixedly connected to the bottom surface of the lower pressure plate and the bottom of the lower pressure groove, and the size of the air cushion is the same as that of the lower pressure plate.

[0022] In summary, the present invention mainly has the following beneficial effects: the present invention can improve the firmness of installation through the window and the fixing with the building outer wall, and the installation is more convenient, reducing the danger during installation, and the retractable bearing plate can avoid the possibility of falling objects falling on the bearing plate;

[0023] First, use a crane to raise the device to the window of the building, and then the construction workers pull the lower top plate and the upper top plate of the device into the window. At this time, after the ear plate and the mounting plate are in contact with the surface of the building's outer wall, the hydraulic cylinder is started to move the upper top plate up until the lower surface of the lower top plate and the upper surface of the upper top plate are in close contact with the upper and lower walls of the window to achieve support. Then the construction workers start the drive motor, and the load-bearing plate moves out of the storage slot for easy standing. After the ear plate and the mounting plate are fixed to the building's outer wall, the load-bearing plate is retracted and hidden;

[0024] When a person falls from above, he or she will fall onto the first protective net below, and under the action of the downward force, the first protective net will be stretched to contact the air cushion below, and the downward force will be buffered by the air cushion. At the same time, the air cushion will push the lower pressure plate downward, squeezing the reset spring, and the contact block will contact the contact switch. At this time, the pneumatic telescopic cylinder will work to push the end plate and drive the support rod to move along the protective frame, so that the second protective net in the protective assembly will be deployed above the first protective net to prevent subsequent falling objects from causing injuries to personnel. Finally, the second protective net can be reeled up and continued to be used through the rotating handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a flow chart of the method of the present invention;

[0026] Figure 2 It is a schematic diagram of the anti-falling device of the present invention;

[0027] Figure 3 It is a top view and cross-sectional structure diagram of the lower top plate of the present invention;

[0028] Figure 4 It is a schematic diagram of a load-bearing plate of the present invention;

[0029] Figure 5 It is an enlarged view of point A of the present invention;

[0030] Figure 6 It is a side cross-sectional structural diagram of the bottom plate of the present invention.

[0031] Description of the drawings: 1. Lower top plate; 101. Ear plate; 102. Hydraulic cylinder; 103. Storage slot; 1031. Limiting slide slot; 1032. Groove; 1033. Square slide slot; 1034. Square slot; 104. Driving motor; 1041. Screw rod; 105. Square sleeve; 106. Fixed plate; 2. Upper top plate; 201. Mounting plate; 3. Load-bearing assembly; 301. Load-bearing plate; 3011. Limiting slider; 3012. Winding slot; 302. Square slide rod; 303. Pneumatic telescopic cylinder; 304. End plate; 305. Support rod; 3051. Moving slider ;4. Protection frame;401. Moving groove;402. First protection net;5. Protection assembly;501. Winding shaft;502. Second protection net;503. Rotating chamber;504. First sprocket;505. Transmission shaft;5051. Second sprocket;5052. Vertical bevel gear;506. Transmission chain;6. Rotating handle;601. Rotating shaft;602. Horizontal bevel gear;603. Limiting plate;604. Electromagnet;7. Bottom plate;701. Lower pressure groove;702. Lower pressure plate;7021. Air cushion;7022. Contact block;703. Reset spring;704. Contact switch. DETAILED DESCRIPTION

[0032] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] The following describes an embodiment of the present invention based on its overall structure. Example

[0034] See also Figure 1-6 As shown, a fall prevention method for construction includes the following steps:

[0035] Step 1: Installation of the anti-fall device: Use a crane to raise the device to the window of the building's outer wall. The construction workers pull the lower top plate 1 and the upper top plate 2 to the inside of the window, and then start the hydraulic cylinder 102, so that the two top plates are in close contact with the upper and lower walls of the window respectively. At the same time, the ear plate 101, the fixing plate 106 and the mounting plate 201 are in contact with the surface of the building's outer wall respectively. At this time, the driving motor 104 pushes the load-bearing plate 301 in the load-bearing assembly 3 out of the lower top plate 1, so that the construction workers can stand and fix the ear plate 101 and the mounting plate 201 on the building's outer wall;

[0036] Step 2, anti-falling, after installation, the load-bearing plate 301 is put into the lower top plate 1, and the construction personnel at high altitude are protected by the first protection net 402 on the protection frame 4. When the personnel fall, they will fall on the first protection net 402, and under the action of the falling force, the first protection net 402 will be stretched and contacted with the air cushion 7021 below, and the protection component 5 will be activated, so that the second protection net 502 extends from the load-bearing plate 301 and unfolds on the first protection net 402;

[0037] Step three, reeling in. After the person is rescued, the horizontal bevel gear 602 can be meshed and connected with the vertical bevel gear 5052 of the protection component 5 by pushing the rotary handle 6, and then the rotation can drive the reeling shaft 501 to rotate and retract the unfolded second protection net 502 for continued use.

[0038] All electrical components in the present application are controlled by an external controller, wherein the telescopic end of the pneumatic telescopic cylinder 303 is located below the rotating chamber 503.

[0039] See also Figure 2-6 As shown, an upper top plate 2 is arranged just above the lower top plate 1, hydraulic cylinders 102 are symmetrically fixed on the upper surface of the lower top plate 1, and the telescopic ends of the two hydraulic cylinders 102 are fixedly connected to the lower surface of the upper top plate 2, and the lower surface of the lower top plate 1 and the upper surface of the upper top plate 2 are tightly abutted against the upper and lower outer walls of the window, and the outer walls of the lower top plate 1 and the upper top plate 2 are respectively provided with ear plates 101 and mounting plates 201, and the two ear plates 101 and the mounting plates 201 are fixedly connected to the surface of the building's outer wall;

[0040] The lower surface of the end of the lower top plate 1 and the lower surfaces of the two ear plates 101 are integrally connected with a fixing plate 106, a receiving groove 103 is provided at the end of the lower top plate 1, and limiting slide grooves 1031 are provided on both side walls of the receiving groove 103, grooves 1032 and square slide grooves 1033 are symmetrically provided on both sides of the inner wall of the receiving groove 103, and a square slot 1034 is provided at the inner center of the receiving groove 103, the load-bearing component 3 is arranged in the receiving groove 103, and a driving motor 104 is fixedly installed at the center of one end of the lower top plate 1 away from the ear plate 101, the output end of the driving motor 104 passes through the square slot 1034 and is fixedly connected with a screw rod 1041, a square sleeve 105 is sleeved on the screw rod 1041, and the end of the square sleeve 105 is fixedly connected to the load-bearing plate 301 included in the load-bearing component 3;

[0041] The two side walls of the end of the load-bearing plate 301 located in the storage groove 103 are welded with limiting sliders 3011, and the two limiting sliders 3011 are slidably connected with the limiting slide groove 1031. The two sides of the end of the load-bearing plate 301 are fixedly installed with pneumatic telescopic cylinders 303 and square slide bars 302. The two square slide bars 302 are matched with the square slide groove 1033. The telescopic ends of the two pneumatic telescopic cylinders 303 penetrate the load-bearing plate 301 and are fixedly connected with the end plate 304, and the bottom ends of the two pneumatic telescopic cylinders 303 are matched with the groove 1032. The end of the load-bearing plate 301 is provided with a winding Groove 3012, an end plate 304 is provided at the end of the winding groove 3012, and a protective component 5 is provided in the winding groove 3012, the protective component of the protective component 5 is connected to the end plate 304, a protective frame 4 is fixedly installed on the outer wall of the fixed plate 106, a first protective net 402 is fixedly installed on the protective frame 4, movable grooves 401 are opened on the upper surfaces of both sides of the protective frame 4, inclined support rods 305 are welded on both sides of the end plate 304, and movable sliders 3051 are welded at the bottom ends of the two support rods 305, and the two movable sliders 3051 are slidably connected to the movable groove 401.

[0042] During construction, in order to prevent workers from falling while working at high altitudes, a crane is first used to raise the anti-fall device to the window of the building. Then, the workers pull the lower top plate 1 and the upper top plate 2 of the device to the inside of the window. At this time, the ear plate 101 and the mounting plate 201 are in contact with the surface of the exterior wall of the building. The hydraulic cylinder 102 is started by an external controller, and the telescopic end of the hydraulic cylinder 102 pushes the upper top plate 2 upward until the lower surface of the lower top plate 1 and the upper surface of the upper top plate 2 are in close contact with the upper and lower walls of the window to achieve support. Then, the construction workers start the drive motor 104 through an external controller, and the output end of the drive motor 104 drives the screw rod 1041 to rotate. At this time, the square sleeve 10 5 Under the restriction of the square slot 1034, it moves along with the rotation of the screw rod 1041, and the moving square sleeve 105 pushes the load-bearing plate 301 to move. The movement of the load-bearing plate 301 drives the limiting slider 3011, the pneumatic telescopic cylinder 303 and the square slide rod 302 to move synchronously. The limiting slider 3011 slides along the limiting slide groove 1031 to limit the moving distance of the load-bearing plate 301. Then the construction personnel stand on the load-bearing plate 301 and use tools to fix the ear plate 101 and the mounting plate 201 to the outer wall of the building to increase the firmness of the installation. After the installation is completed, the load-bearing plate 301 is hidden in the storage slot 103 again to avoid injuries to the falling personnel.

[0043] When a person falls from above, he / she will fall onto the first protective net 402 below. Under the action of the downward force, the first protective net 402 will be stretched and buffered by the buffer member arranged below. During the buffering, the pneumatic telescopic cylinder 303 will be started to work, and the telescopic end of the pneumatic telescopic cylinder 303 will push the end plate 304 to move, and the moving end plate 304 will drive the second protective net 502 to move. The movement of the second protective net 502 will cause the winding shaft 501 to rotate to relax, and the movement of the end plate 304 will also drive the support rod 305 to move, and the support rod 305 will drive the moving slider 3051 to move along the moving groove 401, thereby improving the supporting effect, until the second protective net 502 is deployed above the first protective net 402 to prevent the falling objects from causing harm to the falling personnel. Finally, after the personnel are rescued, when the protective net can be used normally, the second protective net 502 can be rolled up.

[0044] Thus, the fixing of the window and the exterior wall of the building can improve the firmness of the installation, and the installation is more convenient, reducing the danger during installation, and the retractable load-bearing plate 301 can avoid the possibility of falling objects falling onto the load-bearing plate.

[0045] See also Figure 2 and Figure 6 As shown, a bottom plate 7 is arranged below the protective frame 4, and a lower pressing groove 701 is opened on the upper surface of the bottom plate 7, and a lower pressing plate 702 is arranged in the lower pressing groove 701, and an air cushion 7021 is bonded to the upper surface of the lower pressing plate 702, and the outer wall of the lower pressing plate 702 is connected with the inner wall of the lower pressing groove 701 and is slidably connected, and a plurality of contact switches 704 are fixedly installed at the bottom of the lower pressing groove 701, and a plurality of contact blocks 7022 are fixedly installed on the lower surface of the lower pressing plate 702, and the plurality of contact blocks 7022 correspond to the plurality of contact switches 704, and a return spring 703 is arranged on one side of the plurality of contact blocks 7022 on the lower surface of the lower pressing plate 702, and the two ends of the plurality of return springs 703 are respectively fixedly connected to the bottom surface of the lower pressing plate 702 and the bottom of the lower pressing groove 701, and the size of the air cushion 7021 is the same as that of the lower pressing plate 702.

[0046] After a person falls onto the first protective net 402, the falling force will cause the first protective net 402 to stretch and contact with the air cushion 7021 below. The air cushion 7021 can buffer the falling force to a certain extent. After the falling force is transmitted to the air cushion 7021, it will push the lower pressure plate 702 to move downward along the lower pressure groove 701. When the lower pressure plate 702 drives the contact block 7022 to move downward, it will squeeze the return spring 703, which can be further buffered by the return spring 703. The downward moving contact block 7022 is connected to the contact switch 704, so that the pneumatic telescopic cylinder 303 works, so that the second protective net 502 can be deployed while buffering.

[0047] See also Figure 3 and Figure 5 As shown, the protective assembly 5 includes a reel 501 disposed in the reel slot 3012, a second protective net 502 is wound on the reel 501, an end of the second protective net 502 is fixedly connected to the end plate 304, an L-shaped rotating cavity 503 is provided in the load-bearing plate 301 on one side of the reel slot 3012, one end of the reel 501 is rotatably connected to the reel slot 3012, and the other end of the reel 501 passes through the rotating cavity 503 and is rotatably connected to the cavity wall, and an outer wall of the end of the reel 501 located in the rotating cavity 503 is fixedly installed. A first sprocket 504 and a horizontal transmission shaft 505 are provided on the other side of the rotating cavity 503. Both ends of the transmission shaft 505 are rotatably connected to the cavity wall of the rotating cavity 503. The outer walls of both ends of the transmission shaft 505 are respectively fixedly mounted with a second sprocket 5051 and a vertical bevel gear 5052. The second sprocket 5051 is connected to the first sprocket 504 through a transmission chain 506. The diameter of the second sprocket 5051 is smaller than that of the first sprocket 504. One side tooth surface of the vertical bevel gear 5052 passes through the rotating cavity 503 and is located in the receiving groove 103.

[0048] A meshing transverse bevel gear 602 is provided on one side of the vertical bevel gear 5052 in the storage groove 103, and a rotating shaft 601 is passed through the center of the transverse bevel gear 602. The rotating shaft 601 passes through the lower top plate 1 and extends to the outside and is welded with a rotating handle 6. A limiting plate 603 is fixedly installed on the rotating shaft 601 on one side of the transverse bevel gear 602. The groove wall of the storage groove 103 is located on both sides of the rotating shaft 601 and has electromagnets 604 embedded therein. An iron sheet is embedded in the outer wall of the limiting plate 603, and the two electromagnets 604 are both magnetically adsorbed and connected to the iron sheet.

[0049] When it is necessary to reel in the unfolded second protection net 502, the construction personnel cut off the power to the electromagnet 604 through the external controller, and the magnetism of the electromagnet 604 disappears to cancel the adsorption of the iron sheet on the limiting plate 603. At this time, the handle 6 is pushed, and the handle 6 drives the shaft 601 to move, and the shaft 601 drives the horizontal bevel gear 602 to move, so that the tooth surface of the horizontal bevel gear 602 meshes with the tooth surface of the vertical bevel gear 5052. Then, the handle 6 is rotated to drive the horizontal bevel gear 602 to rotate through the shaft 601, so that the vertical bevel gear 5052 is meshed with the tooth surface of the vertical bevel gear 5052. The gear 5052 rotates, and the vertical bevel gear 5052 transmits the rotational force to the second sprocket 5051 through the transmission shaft 505. The second sprocket 5051 rotates and drives the first sprocket 504 to rotate through the transmission chain 506. The rotation of the first sprocket 504 drives the winding shaft 501 to rotate. The rotating winding shaft 501 rewinds the second protective net 502. While rewinding, the pneumatic telescopic cylinder 303 is started by an external controller to shrink the telescopic end until the end plate 304 contacts the end of the load-bearing plate 301 again.

[0050] The working principle of the present invention is:

[0051] During construction, in order to prevent workers from falling while working at high altitudes, a crane is first used to raise the anti-fall device to the window of the building. Then, the workers pull the lower top plate 1 and the upper top plate 2 of the device to the inside of the window. At this time, the ear plate 101 and the mounting plate 201 are in contact with the surface of the exterior wall of the building. The hydraulic cylinder 102 is started by an external controller, and the telescopic end of the hydraulic cylinder 102 pushes the upper top plate 2 upward until the lower surface of the lower top plate 1 and the upper surface of the upper top plate 2 are in close contact with the upper and lower walls of the window to achieve support. Then, the construction workers start the drive motor 104 through an external controller, and the output end of the drive motor 104 drives the screw rod 1041 to rotate. At this time, the square sleeve 10 5 Under the restriction of the square slot 1034, it moves along with the rotation of the screw rod 1041, and the moving square sleeve 105 pushes the load-bearing plate 301 to move. The movement of the load-bearing plate 301 drives the limiting slider 3011, the pneumatic telescopic cylinder 303 and the square slide rod 302 to move synchronously. The limiting slider 3011 slides along the limiting slide groove 1031 to limit the moving distance of the load-bearing plate 301. Then the construction personnel stand on the load-bearing plate 301 and use tools to fix the ear plate 101 and the mounting plate 201 to the outer wall of the building to increase the firmness of the installation. After the installation is completed, the load-bearing plate 301 is hidden in the storage slot 103 again to avoid injuries to the falling personnel.

[0052] When a person falls from above, he / she will fall onto the first protective net 402 below. The falling force will cause the first protective net 402 to stretch and contact with the air cushion 7021 below. The air cushion 7021 can buffer the falling force to a certain extent. After the falling force is transmitted to the air cushion 7021, it will push the lower pressure plate 702 to move downward along the lower pressure groove 701. When the lower pressure plate 702 drives the contact block 7022 to move downward, it will squeeze the return spring 703. The return spring 703 can further buffer the falling force. The downward moving contact block 7022 and the contact switch 70 4 connection, so that the pneumatic telescopic cylinder 303 works, the telescopic end of the pneumatic telescopic cylinder 303 pushes the end plate 304 to move, the moving end plate 304 drives the second protective net 502 to move, the movement of the second protective net 502 causes the reel 501 to rotate to relax, and the movement of the end plate 304 also drives the support rod 305 to move, the support rod 305 drives the moving slider 3051 to move along the moving groove 401, until the second protective net 502 is unfolded above the first protective net 402, so as to prevent falling objects from falling and causing injuries to the falling personnel.

[0053] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A method for preventing falling in construction, characterized in that , including the following steps: Step 1: Installation of the anti-fall device. The device is raised to the window of the building's outer wall using a crane. The construction worker pulls the lower top plate (1) and the upper top plate (2) into the window, and then starts the hydraulic cylinder (102) so that the two top plates are in close contact with the upper and lower walls of the window, respectively. At the same time, the ear plate (101), the fixing plate (106) and the mounting plate (201) are in contact with the surface of the building's outer wall, respectively. At this time, the driving motor (104) pushes the load-bearing plate (301) in the load-bearing assembly (3) out of the lower top plate (1), so that the construction worker can stand and fix the ear plate (101) and the mounting plate (201) on the building's outer wall. Step 2, anti-falling, after installation, the load-bearing plate (301) is put into the lower top plate (1), and the construction personnel at high altitude are protected by the first protection net (402) on the protection frame (4). When the personnel fall, they will fall on the first protection net (402), and under the action of the falling force, the first protection net (402) will be stretched and contacted with the air cushion (7021) below, and the protection component (5) will be activated, so that the second protection net (502) extends from the load-bearing plate (301) and unfolds on the first protection net (402); Step 3: Reeling in the net. After the person is rescued, the handle (6) is pushed to engage the horizontal bevel gear (602) with the vertical bevel gear (5052) of the protection assembly (5). The rotation of the handle (6) can then drive the reeling shaft (501) to rotate and retract the unfolded second protection net (502) for further use. An upper top plate (2) is arranged directly above the lower top plate (1), hydraulic cylinders (102) are symmetrically fixed on the upper surface of the lower top plate (1), the telescopic ends of the two hydraulic cylinders (102) are fixedly connected to the lower surface of the upper top plate (2), the lower surface of the lower top plate (1) and the upper surface of the upper top plate (2) are tightly abutted against the upper and lower outer walls of the window, and the outer walls of the lower top plate (1) and the upper top plate (2) are respectively provided with ear plates (101) and mounting plates (201), and the two ear plates (101) and the mounting plate (201) are fixedly connected to the surface of the building's outer wall; The lower surface of the end of the lower top plate (1) and the lower surfaces of the two ear plates (101) are integrally connected to a fixing plate (106); a storage groove (103) is provided at the end of the lower top plate (1); both side walls of the storage groove (103) are provided with limiting slide grooves (1031); both sides of the inner wall of the storage groove (103) are symmetrically provided with grooves (1032) and square slide grooves (1033); and a square slot (1034) is provided at the center of the interior of the storage groove (103). ), the load-bearing component (3) is arranged in the storage groove (103), a driving motor (104) is fixedly installed at the center of one end of the lower top plate (1) away from the ear plate (101), the output end of the driving motor (104) passes through the square slot (1034) and is fixedly connected to a screw rod (1041), a square sleeve (105) is sleeved on the screw rod (1041), and the end of the square sleeve (105) is fixedly connected to the load-bearing plate (301) included in the load-bearing component (3); The end of the load-bearing plate (301) is provided with a winding groove (3012), the end of the winding groove (3012) is provided with an end plate (304), and a protective component (5) is provided in the winding groove (3012), and the protective component of the protective component (5) is connected to the end plate (304), a bottom plate (7) is provided below the protective frame (4), a lower pressing groove (701) is provided on the upper surface of the bottom plate (7), a lower pressing plate (702) is provided in the lower pressing groove (701), and an air cushion (7021) is bonded to the upper surface of the lower pressing plate (702); Limiting sliders (3011) are welded to both side walls of the end of the load-bearing plate (301) located in the storage groove (103), and the two limiting sliders (3011) are slidably connected to the limiting slide groove (1031). Pneumatic telescopic cylinders (303) and square slide bars (302) are fixedly installed on both sides of the end of the load-bearing plate (301). The telescopic ends of the two pneumatic telescopic cylinders (303) penetrate the load-bearing plate (301) and are fixedly connected to the end plate (304), and the bottom ends of the two pneumatic telescopic cylinders (303) match the groove (1032), and the two square slide bars (302) match the square slide groove (1033). A protective frame (4) is fixedly installed on the outer wall of the fixed plate (106), and a first protective net (402) is fixedly installed on the protective frame (4). The upper surfaces of both sides of the protective frame (4) are provided with movable grooves (401); The protective component (5) comprises a reel (501) arranged in a reeling groove (3012), a second protective net (502) being wound on the reeling shaft (501), an end of the second protective net (502) being fixedly connected to an end plate (304), an L-shaped rotating cavity (503) being provided in the load-bearing plate (301) on one side of the reeling groove (3012), one end of the reeling shaft (501) being rotatably connected to the reeling groove (3012), and the other end of the reeling shaft (501) passing through the rotating cavity (503) and being rotatably connected to the cavity wall, and an outer wall of the end of the reeling shaft (501) located in the rotating cavity (503) being fixedly mounted with a A first sprocket (504) is provided on the other side of the rotating cavity (503), and a horizontal transmission shaft (505) is provided. Both ends of the transmission shaft (505) are rotatably connected to the cavity wall of the rotating cavity (503). A second sprocket (5051) and a vertical bevel gear (5052) are respectively fixedly mounted on the outer walls at both ends of the transmission shaft (505). The second sprocket (5051) is transmission-connected to the first sprocket (504) via a transmission chain (506). The diameter of the second sprocket (5051) is smaller than the diameter of the first sprocket (504). One side tooth surface of the vertical bevel gear (5052) passes through the rotating cavity (503) and is located in the receiving groove (103).

2. A method for preventing falling in construction according to claim 1, characterized in that: Inclined support rods (305) are welded to both sides of the end plate (304), and movable sliders (3051) are welded to the bottom ends of the two support rods (305), and the two movable sliders (3051) are slidably connected to the movable groove (401).

3. A method for preventing falling in construction according to claim 1, characterized in that: A meshing transverse bevel gear (602) is provided on one side of the vertical bevel gear (5052) in the storage groove (103); a rotating shaft (601) is provided at the center of the transverse bevel gear (602); the rotating shaft (601) passes through the lower top plate (1) and extends to the outside and is welded with a rotating handle (6); a limiting plate (603) is fixedly installed on the rotating shaft (601) on one side of the transverse bevel gear (602); the groove wall of the storage groove (103) is located on both sides of the rotating shaft (601) and has electromagnets (604) embedded therein; an iron sheet is embedded in the outer wall of the limiting plate (603); and the two electromagnets (604) are both magnetically adsorbed and connected to the iron sheet.

4. A method for preventing falling in construction according to claim 1, characterized in that: The outer wall of the lower pressing plate (702) is connected to the inner wall of the lower pressing groove (701) in a sliding manner, a plurality of contact switches (704) are fixedly mounted on the bottom of the lower pressing groove (701), and a plurality of contact blocks (7022) are fixedly mounted on the lower surface of the lower pressing plate (702), and the plurality of contact blocks (7022) correspond to the plurality of contact switches (704).

5. A method for preventing falling in construction according to claim 1, characterized in that: The lower surface of the lower pressure plate (702) is located on one side of the multiple contact blocks (7022) and is provided with a return spring (703), and the two ends of the multiple return springs (703) are respectively fixedly connected to the bottom surface of the lower pressure plate (702) and the bottom of the lower pressure groove (701), and the size of the air cushion (7021) is the same as that of the lower pressure plate (702).

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