Anti-falling device for building construction and construction method

Abstract

The invention belongs to the technical field of building construction protection, and relates to an anti-falling device for building construction and a construction method. The end, away from the supporting and positioning unit, of the horizontal blocking and supporting mechanism is connected with the oblique blocking and supporting mechanism through a locking pressing piece, an overhauling steering pull rod is arranged on the outer side face of the horizontal blocking and supporting mechanism, and an overhauling and positioning assembly is arranged on the top face of the supporting and positioning unit. The maintenance steering pull rod cooperates with the maintenance positioning assembly, stability in the maintenance process is kept, the operation gap of personnel is shortened, part of structures do not need to be dismantled, damage to the device and the building structure is reduced by storing the buffer unit and absorbing part of impact energy, and meanwhile the risk of secondary damage to constructors caused by rebound is reduced; through adjustment of the locking pressing piece, the inclined blocking and supporting mechanism can flexibly rotate, and the angle of the inclined blocking and supporting mechanism can be adjusted according to actual construction requirements.

Description

Technical Field

[0001] This invention relates to the field of construction safety technology, and in particular to a fall protection device and construction method for construction. Background Technology

[0002] During construction, various safety measures are taken to ensure the safety of personnel and construction materials and prevent falling accidents. Among these measures, setting up construction scaffolding on the construction site is a common and important one.

[0003] Currently, fall arrestor brackets or scaffolding are widely used for safety protection in the construction industry. However, most of them focus on providing footholds for construction workers and cannot form an effective fall arrestor layer on the exterior wall surface of the building. Moreover, the installation process requires professional technicians and has high requirements for the installation environment. This not only increases the preparation time and labor costs in the early stage of construction, but may also affect the overall stability of the device due to improper installation, thereby affecting the fall arrestor effect.

[0004] It lacks an effective buffer mechanism, and its inspection and maintenance require a lot of time and effort. Often, it is necessary to dismantle part of the structure to inspect and repair the internal components, resulting in high replacement costs. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a fall protection device and construction method for building construction.

[0006] The technical solution of the present invention is achieved through the following scheme: a fall prevention device for building construction, comprising a support positioning unit, a horizontal blocking support mechanism and an oblique blocking support mechanism, wherein the support positioning unit is rotatably installed at one end of the horizontal blocking support mechanism; The other end of the horizontal barrier support mechanism is rotatably mounted with an oblique barrier support mechanism via a locking button. When the locking button and the horizontal barrier support mechanism are engaged, the angle of the oblique barrier support mechanism is limited. The outer side of the horizontal barrier support mechanism is provided with a maintenance steering rod to drive the horizontal barrier support mechanism to rotate on the support positioning unit.

[0007] Through the above technical solutions, multiple fall arrest devices, consisting of horizontal and diagonal barrier support mechanisms, are linearly arranged and fixed to the exterior wall surface of the building via a support positioning unit, forming a fall arrest layer on the building's exterior wall. The maintenance steering tie rod, in conjunction with the maintenance positioning component, achieves positioning, maintains stability during maintenance, shortens operator break time, and eliminates the need to dismantle parts of the structure, reducing maintenance difficulty. The buffer unit absorbs some impact energy, mitigating damage to the device and building structure, and also reduces the risk of secondary injury to construction workers from rebound, thus improving the safety and reliability of the device. By adjusting the locking mechanism, the diagonal barrier support mechanism can rotate flexibly, allowing adjustment of its angle according to actual construction needs.

[0008] Preferably, the horizontal barrier support mechanism includes a wire rope net, two horizontal arms, and a storage and buffer unit. The two horizontal arms are arranged opposite to each other, and the storage and buffer unit is located inside the horizontal arms. The storage and buffer unit is used to tension the wire rope net. A protective plate is detachably installed on the top surface of the horizontal arms. The wire rope net is located between the protective plate and the horizontal arms. The ends of the horizontal arms are rotatably installed on the support and positioning unit. Inspection and positioning holes are opened on both sides of the horizontal arms. Inspection and steering rods are movably installed on the outer side of the horizontal arms. The horizontal support arm has a fixed shaft protruding from one end away from the support and positioning unit. The fixed shaft is fitted with an oblique blocking support mechanism via a locking button.

[0009] Preferably, the storage and buffer unit includes a winding connecting strip, a mounting box, a connecting gear, a buffer pressure seat, and an adjustment knob. The mounting box is fixedly installed in the inner cavity of the horizontal support arm near the end of the support and positioning unit. One end of the winding connecting strip is provided with a connecting shaft. The connecting shaft passes through the mounting box and is connected to the connecting gear. The connecting gear meshes and abuts against the bottom surface of the buffer pressure seat. The buffer pressure seat is slidably installed in the mounting box. The adjustment knob is screwed to the top surface of the mounting box. The adjustment knob is connected to the top surface of the buffer pressure seat through a third support spring. The other end of the winding connecting strip is rotatably mounted on the inner cavity of the horizontal support arm, and the third support spring is rotatably mounted on the adjustment knob.

[0010] Preferably, the inclined barrier support mechanism includes two inclined arms, locking buttons, several steel cables, and mounting strips. One end of each inclined arm has a protruding shaft plate with opposite sides. The shaft plate is connected to the horizontal barrier support mechanism through the locking buttons. Mounting strips are fixedly installed inside each inclined arm. Several steel cables pass through the inclined arms and are fixedly connected to the mounting strips. The steel cables are supported between the two inclined arms through the mounting strips.

[0011] Preferably, the support positioning unit includes a support base, a rotating support seat, a limiting cover, and a reinforcing base. The rotating support seat is fixedly installed on the inner side of the support base. The horizontal blocking support mechanism is rotatably installed on the rotating support seat via a connecting pin. Two maintenance positioning components are installed opposite each other on the top surface of the rotating support seat. The rotating support seat is concave in shape. A limiting cover is fixedly installed on the side of the rotating support seat away from the maintenance positioning components. A reinforcing base is fixedly installed on the front end face of the limiting cover. An anti-deviation seat is installed between the reinforcing base and the horizontal blocking support mechanism.

[0012] Preferably, the maintenance positioning assembly includes an installation sleeve, a positioning rod, and a first support spring. The installation sleeve is fixedly installed on the top baffle of the rotating support seat, and the positioning rod is slidably installed inside the installation sleeve through the first support spring. The positioning rod is adapted to the maintenance positioning hole.

[0013] Preferably, the locking mechanism includes a positioning toothed sleeve, a polygonal guide rod, and a second support spring. The polygonal guide rod has positioning toothed sleeves at both ends. The polygonal guide rod and the positioning toothed sleeves both pass through the fixed shaft and the shaft plate. The two positioning toothed sleeves are slidably connected to the polygonal guide rod through the second support spring. The cross-sections at both ends of the polygonal guide rod are non-circular. The ends of the positioning toothed sleeves have grooves that fit the ends of the polygonal guide rod. The shaft plate of the inclined support arm is connected to the two positioning toothed sleeves through inter-tooth meshing.

[0014] The construction method for the aforementioned fall arrest device for building construction includes the following specific steps: Step A: Assemble the fall arrestor; Step B: Press the locking button to release the fixation of the inclined barrier support mechanism and adjust the angle of the inclined barrier support mechanism; Step C: Adjust the storage and buffer unit to ensure that the wire rope net of the horizontal barrier support mechanism has good buffering and bearing functions; Step D: Linearly arrange and fix the multiple pre-installed fall arrest devices to the exterior wall surface of the building; Step E: Pull and inspect the steering tie rod to perform maintenance.

[0015] As a preferred option, the specific adjustment steps for step C include: c1. Adjust the compression of the third support spring by turning the adjustment knob to adjust the initial position of the buffer seat inside the mounting box; c2. Adjust the meshing pressure between the buffer pressure seat and the connecting gear by changing the position of the buffer pressure seat; c3. When the wire rope mesh is impacted by falling material, the two wound connecting belts are driven to rotate inward relative to each other by the wire rope mesh, and drive the connecting gear to rotate through the connecting shaft. Under the elastic support of the third support spring, the buffer pressure seat and the connecting gear remain continuously meshed, thus providing elastic support for the rotation process of the connecting gear.

[0016] Preferably, in step E, the maintenance steering rod is manually pulled, causing the front end of the maintenance steering rod to drive the horizontal and diagonal barrier support mechanisms to rotate toward the outer wall surface until the maintenance positioning component is engaged and fixed with the maintenance positioning hole, thereby achieving positioning, shortening the operating gap between personnel and the horizontal and diagonal barrier support mechanisms, and reducing the difficulty of maintenance.

[0017] In summary, the present invention has the following beneficial effects: 1. This invention uses a support positioning unit to linearly arrange and fix multiple fall protection devices, consisting of horizontal and diagonal barrier support mechanisms, onto the exterior wall surface of a building, thus forming a fall protection layer on the exterior wall. The maintenance steering tie rod, in conjunction with the maintenance positioning component, achieves positioning, maintains stability during maintenance, shortens the operator's working intervals, and eliminates the need to dismantle parts of the structure, reducing maintenance difficulty. The inclusion of a buffer unit absorbs some impact energy, reducing damage to the device and building structure, and also lowers the risk of secondary injury to construction workers from rebound, thus improving the safety and reliability of the device. By adjusting the locking mechanism, the diagonal barrier support mechanism can rotate flexibly, allowing adjustment of its angle according to actual construction needs.

[0018] 2. The basic framework of the horizontal barrier support mechanism is formed by two opposing horizontal supports, providing a stable horizontal support structure for the entire device. Protective plates protect the buffer unit and the wire rope mesh winding end from direct erosion and damage from the external environment, extending their service life. The maintenance positioning holes, in conjunction with the maintenance positioning components on the top surface of the support positioning unit, allow the horizontal supports to be fixed in a stable state when maintenance is required, facilitating detailed inspection and maintenance of the entire device without the need for large-scale dismantling of the device structure, thus improving maintenance efficiency and reducing maintenance difficulty.

[0019] 3. By using a winding connecting belt in conjunction with a buffer pressure seat, the rotation of the winding connecting belt causes the buffer pressure seat to slide within the mounting box. This causes the third support spring to compress and rebound, thereby converting the impact energy of the falling object into the elastic potential energy of the third support spring. This effectively reduces the direct impact of the falling object on the device and building structure. The compression degree of the third support spring can be changed by adjusting the knob to provide different impact absorption, improving the flexibility and adaptability of the device.

[0020] 4. The rotating support base provides a maintenance rotation support point for the horizontal barrier support mechanism; the limiting cover restricts the rotation range of the horizontal barrier support mechanism; the reinforced base further enhances the strength and stability of the limiting cover; the multiple support design enables the support positioning unit to withstand greater external forces, ensuring the overall stability of the device; the anti-deviation seat effectively prevents the horizontal barrier support mechanism from shifting when rotating or subjected to external impact, ensuring that the horizontal barrier support mechanism always remains in the correct position and angle, thus improving the reliability and safety of the device.

[0021] 5. Precise positioning is achieved through the positioning rod and the maintenance positioning hole, ensuring that the horizontal barrier support mechanism maintains a fixed position and angle during maintenance. The installation sleeve, together with the first support spring, provides stable support force for the positioning rod, so that the positioning rod can fit tightly after being inserted into the maintenance positioning hole and is not easy to loosen. This effectively restricts the rotation and movement of the horizontal barrier support mechanism and prevents it from being accidentally displaced during maintenance.

[0022] 6. The non-circular structure prevents the positioning tooth sleeve from rotating freely on the polygonal guide rod, effectively limiting the rotational freedom of the shaft plate relative to the fixed shaft. This enhances the stability of the connection between the inclined support arm and the horizontal barrier support mechanism, ensuring that the connection will not easily loosen or separate under external impact, thus guaranteeing the stability of the entire fall arrest device structure. With the elastic support of the second support spring, the fixed support of the inclined support arm can be released simply by pressing the positioning tooth sleeve, and the second support spring will rebound to fix and restrict movement when it loses its force. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is a schematic diagram of the assembly of the steel wire rope net and the storage buffer unit of the present invention; Figure 4 This is a schematic diagram of the mounting strip and steel cable assembly structure in the oblique barrier support mechanism of the present invention; Figure 5 yes Figure 1 A magnified structural diagram at point A; Figure 6 yes Figure 5 Schematic diagram of the internal cross-sectional structure; Figure 7 This is a schematic diagram of the assembly structure of the support positioning unit and the horizontal barrier support mechanism of the present invention; Figure 8 yes Figure 7 A cross-sectional structural diagram of the horizontal barrier support mechanism; Figure 9This is a schematic diagram of the internal cross-sectional structure of the buffer unit of the present invention; Figure 10 yes Figure 9 A magnified structural diagram at point B; Figure 11 yes Figure 7 Schematic diagram of the side section structure of the support positioning unit and the horizontal barrier support mechanism; Figure 12 This is a schematic diagram of the internal cross-sectional structure of the inspection and positioning component of the present invention; Figure 13 This is a schematic diagram of the workflow of the present invention.

[0024] Explanation of reference numerals in the attached drawings: 1. Support positioning unit; 11. Support base; 12. Inspection and positioning assembly; 121. Mounting sleeve; 122. Positioning rod; 123. First support spring; 13. Rotating support seat; 14. Limit cover; 15. Reinforcing base; 16. Anti-deviation seat; 2. Horizontal barrier support mechanism; 21. Steel wire rope net; 22. Horizontal support arm; 23. Protective plate; 24. Storage and buffer unit; 241. Winding connecting belt; 242. Mounting box; 243. Connecting shaft; 244. Connecting gear; 245. Buffer pressure seat; 246. Adjusting knob; 247. Third support spring; 3. Angled barrier support mechanism; 31. Angled support arm; 32. Positioning toothed sleeve; 33. Polygonal guide rod; 34. Second support spring; 35. Steel cable; 36. Mounting strip; 4. Inspect the positioning hole; 5. Inspect the steering tie rod; 6. Connecting pin; 7. Connecting block; 8. Lock. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein. Therefore, the invention is not limited to the specific embodiments disclosed in the following specification. The invention will be further described in detail below with reference to the accompanying drawings.

[0027] Example 1: A fall arrest device for construction work, such as Figures 1-13As shown, it includes a support positioning unit 1, a horizontal barrier support mechanism 2, and an oblique barrier support mechanism 3. The support positioning unit 1 is rotatably installed at one end of the horizontal barrier support mechanism 2. The horizontal barrier support mechanism 2 is rotatably installed on the exterior wall surface through the support positioning unit 1. Both the horizontal barrier support mechanism 2 and the oblique barrier support mechanism 3 are square. The installation process of the support positioning unit 1 is relatively simple, reducing the reliance on professional technicians. It only needs to be driven into the exterior wall with expansion bolts. The requirements for the installation environment are relatively low, reducing the pre-construction preparation time, reducing labor costs, and improving construction efficiency. There are two support positioning units 1, which serve as the rotation fulcrum of the horizontal barrier support mechanism 2 and are installed on the exterior wall surface of the building.

[0028] At the other end of the horizontal barrier support mechanism 2, an inclined barrier support mechanism 3 is rotatably mounted via a locking button. When the locking button and the horizontal barrier support mechanism 2 are engaged, the angle of the inclined barrier support mechanism 3 is limited. That is, the end of the horizontal barrier support mechanism 2 away from the support positioning unit 1 is connected to the inclined barrier support mechanism 3 via the locking button. The locking button can be pressed down at the connection between the horizontal barrier support mechanism 2 and the inclined barrier support mechanism 3, causing the inclined barrier support mechanism 3 to rotate on the horizontal barrier support mechanism 2. The horizontal barrier support mechanism 2 is the main beam, and the inclined barrier support mechanism 3 is the secondary beam. The two are hinged together by the locking button. The locking button can be pressed down to unlock, allowing the inclined barrier support mechanism 3 to rotate ±90 degrees around the horizontal barrier support mechanism 2, which facilitates on-site angle adjustment.

[0029] The outer side of the horizontal barrier support mechanism 2 is provided with a maintenance steering rod 5, which drives the horizontal barrier support mechanism 2 to rotate on the support positioning unit 1. The outer wall of the horizontal arm 22 of the horizontal barrier support mechanism 2 is provided with a protrusion and a locking block. One end of the maintenance steering rod 5 is rotatably mounted on the protrusion, and the other end is locked with the locking block. The locking block is located at the end close to the support positioning unit 1, so that the operator can grasp the maintenance steering rod 5 from the locking block during maintenance, so as to disengage it from the locking block and pull the whole device to rotate from the support positioning unit 1. The maintenance steering rods 5 are arranged opposite each other, and the outer walls of both horizontal arms 22 are provided with maintenance steering rods 5, so that the whole device is close to the operator and facilitates the operator to carry out maintenance.

[0030] The top surface of the support positioning unit 1 is provided with a maintenance positioning component 12 to fix the horizontal blocking support mechanism 2 after rotation, so as to ensure stability during maintenance.

[0031] like Figure 1 , Figure 7 , Figure 8 and Figure 11As shown, the horizontal barrier support mechanism 2 includes a wire rope mesh 21, two horizontal support arms 22, and a buffer unit 24. The two horizontal support arms 22 are arranged opposite to each other, and the buffer unit 24 is located inside the horizontal support arms 22. The buffer unit 24 is used to tension the wire rope mesh 21. A protective plate 23 is detachably installed on the top surface of the horizontal support arms 22. The protective plate 23 is installed on the top surface of the horizontal support arms 22 through a snap-fit ​​structure. The wire rope mesh 21 is located between the protective plate 23 and the horizontal support arms 22. The ends of the horizontal support arms 22 are rotatably mounted on the support positioning unit 1. Inspection and positioning holes 4 are opened on both sides of the horizontal support arms 22, and the inspection and positioning holes 4 are symmetrically arranged. The maintenance and positioning component 12 is adapted to the positioning rod 122. The maintenance and steering rod 5 is movably installed on the outer side of the horizontal support arm 22. The horizontal support arm 22 is a long strip metal box structure with an open top surface, which is used to accommodate the buffer unit 24. Two buffer units 24 are installed on the two horizontal support arms 22. Although the protective plate 23 is snapped onto the horizontal support arm 22, there is a certain gap between it and the horizontal support arm 22. The wire rope net 21 extends out from this gap and is laid between the two horizontal support arms 22. It can both shield the drum from the direct impact of external dust, gravel, etc. through the protective plate 23 and not affect the free extension of the wire rope net 21 when it is under tension.

[0032] The number of storage and buffer units 24 is the same as the number of horizontal support arms 22. Two storage and buffer units 24 are wound with wire rope nets 21. The wire rope nets 21 are set between the two storage and buffer units 24. The wire rope nets 21 are normally kept taut and cover the dangerous area below the construction area. If a fall occurs, the wire rope nets 21 will trigger the storage and buffer units 24 to release the net after being impacted, absorbing energy and limiting the falling distance of the object. The wire rope nets 21 are composed of multiple steel cables 35 and woven rope nets. Adjacent ropes are fixed by connecting blocks 7 to form a whole wire rope net 21. The connecting blocks 7 can reduce the replacement cost and difficulty in the event of partial damage.

[0033] like Figure 5 As shown, a fixed shaft protrudes from one end of the horizontal support arm 22 away from the support positioning unit 1. The fixed shaft is fitted with an oblique blocking support mechanism 3 via a locking button. Circular grooves are opened on the horizontal support arms 22 at both ends of the fixed shaft. The shaft plate of the oblique blocking support mechanism 3 is adapted to the circular groove at the end of the horizontal support arm 22 to cooperate with the rotation of the fixed shaft at the end of the horizontal support arm 22. The shaft plate and the fixed shaft are coaxially mounted, and a locking button is installed on the shaft center.

[0034] like Figure 3 , Figure 8 , Figure 9 and Figure 10As shown, the buffer unit 24 includes a wound connecting strap 241, a mounting box 242, a connecting gear 244, a buffer pressure seat 245, and an adjustment knob 246. The mounting box 242 is fixedly installed in the inner cavity of the horizontal support arm 22 near the end of the support positioning unit 1. One end of the wound connecting strap 241 is provided with a connecting shaft 243, which passes through the mounting box 242 and is connected to the connecting gear 244. The connecting gear 244 meshes with the bottom surface of the buffer pressure seat 245, and the buffer pressure seat 245 is slidably installed in the mounting box 242. The adjustment knob 246 is screwed onto the top surface of the mounting box 242. The adjustment knob 246 is connected to the top surface of the buffer pressure seat 245 through the third support spring 247. The connecting gear 244 is located inside the mounting box 242. The bottom surface of the buffer pressure seat 245 has meshing teeth, which convert the rotational motion of the gear into the linear sliding resistance of the buffer pressure seat 245. The reverse rebound of the third support spring 247 provides a reaction rebound to the buffer pressure seat 245. In turn, the reaction force of the meshing teeth applies a rotational resistance torque to the connecting gear 244, thereby reducing the peak value of the instantaneous impact force.

[0035] The same wire rope net 21 is wound on the two winding connecting strips 241 in the two storage buffer units 24, and the direction is opposite, which facilitates the net being pulled in and released, and makes the wire rope net 21 taut or loose.

[0036] The other end of the winding connecting strip 241 is rotatably mounted on the inner cavity of the horizontal support arm 22 and connected to the inner cavity of the horizontal support arm 22 through a bearing. The third support spring 247 is rotatably mounted on the adjusting knob 246. The adjusting knob 246 has an annular groove with a turntable inside. One end of the third support spring 247 is connected to the turntable, and the other end is connected to the buffer pressure seat 245 to avoid rotational stress on the third support spring 247 when the adjusting knob 246 is rotated, which would damage the third support spring 247 and extend its service life.

[0037] Tightening the adjustment knob 246 increases the preload of the third support spring 247, thereby increasing the pressure of the buffer seat 245 on the connecting gear 244 and absorbing more energy when subjected to impact.

[0038] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the inclined barrier support mechanism 3 includes two inclined arms 31, locking fasteners, several steel cables 35, and mounting strips 36. One end of each inclined arm 31 has a protruding, oppositely positioned shaft plate. The shaft plate is connected to the horizontal barrier support mechanism 2 via the locking fasteners. Mounting strips 36 are fixedly installed inside each inclined arm 31. Several steel cables 35 pass through the inclined arms 31 and are fixedly connected to the mounting strips 36. The steel cables 35 are supported between the two inclined arms 31 via the mounting strips 36 and are fixedly installed on the mounting strips 36 via locking buckles 8. On the 6th, there are two inclined support arms 31, which are arranged relatively parallel to each other and form a V-shaped support with the horizontal support arm 22 of the horizontal barrier support mechanism 2. The inclined support arm 31 is generally elongated and has an installation strip 36 welded to the inner side of the cavity. The installation strip 36 has steel cable 35 fixing holes opened at intervals. The locking buckle 8 is tightened after passing through the fixing holes of the installation strip 36. The locking buckle 8 adopts a double-hole buckle clamp to ensure that the steel cable 35 and the installation strip 36 do not slide relative to each other. Multiple through holes are opened on both sides of the inclined support arm 31, and the steel cable 35 passes through the through holes.

[0039] The steel wire rope net 21 of the horizontal barrier support mechanism 2 and the steel cable 35 of the inclined support arm 31 form a three-dimensional barrier net, expanding the protection coverage area.

[0040] like Figure 1 , Figure 7 , Figure 8 and Figure 11 As shown, the support positioning unit 1 includes a support base 11, a rotating support seat 13, a limiting cover 14, and a reinforcing base 15. The rotating support seat 13 is fixedly installed on the inner side of the support base 11. The horizontal barrier support mechanism 2 is rotatably mounted on the rotating support seat 13 via a connecting pin 6. Two maintenance positioning components 12 are installed opposite each other on the top surface of the rotating support seat 13. The rotating support seat 13 is concave in shape. A limiting cover 14 is fixedly installed on the side of the rotating support seat 13 away from the maintenance positioning components 12. The limiting cover 14 and the rotating support seat 13 are integrally constructed, allowing the horizontal barrier support mechanism 2 to... The rotation angle of the structure 2 is limited to 0° to 90°. 0° is the unfolded protective state, and 90° is the wall-mounted storage and maintenance state. The front end of the limit cover 14 is fixedly installed with a reinforcing base 15. An anti-deviation seat 16 is installed between the reinforcing base 15 and the horizontal barrier support mechanism 2. The bottom end of the anti-deviation seat 16 is inserted into the inner side of the reinforcing base 15 and is in close contact with the inner wall of the reinforcing base 15. The anti-deviation seat 16 is welded to the bottom end of the horizontal support arm 22. The anti-deviation seat 16 and the reinforcing base 15 are detachable and sleeved together. The reinforcing base 15 provides stable support for the horizontal support arm 22.

[0041] The inner wall of the reinforced base 15 provides radial constraint for the anti-deviation seat 16, which can effectively suppress the radial sway of the horizontal support arm 22 caused by its own weight, wind load or impact load, and ensure that the support arm always moves along the theoretical rotation axis, avoiding jamming or wear between the horizontal support arm 22 and the concave groove side wall of the rotating support seat 13.

[0042] The support base 11 is a rectangular metal plate with a rotating support 13 extending outward from the inner side. It is integrally cast or welded to form a T-shaped installation structure.

[0043] like Figure 2 , Figure 7 , Figure 8 and Figure 12 As shown, the maintenance positioning assembly 12 includes a mounting sleeve 121, a positioning rod 122, and a first support spring 123. The mounting sleeve 121 is fixedly installed at the top baffle of the rotating support seat 13. The positioning rod 122 is slidably installed inside the mounting sleeve 121 via the first support spring 123. The positioning rod 122 is adapted to the maintenance positioning hole 4. The mounting sleeve 121 is a cylindrical metal tube with an open end, serving as a sliding track for the positioning rod 122, restricting the rod to move only in a straight line along the axial direction to avoid skewness and jamming. This works in conjunction with the first support spring 123 inside the sleeve. Spring 123 rebounds and resets. The outermost end of its positioning rod 122 is provided with a handle to facilitate its removal from the maintenance positioning hole 4. The other end has a chamfered slope to facilitate the retraction of the horizontal support arm 22 after compression, and then it aligns with the maintenance positioning hole 4. The first support spring 123 rebounds and slides into the maintenance positioning hole 4 for positioning. The positioning rod 122 is cross-shaped in general. The end with the chamfered slope is integrally provided with an annular plate that matches the mounting sleeve 121, which facilitates connection with the first support spring 123. The annular plate slides within the mounting sleeve 121.

[0044] like Figure 5 and Figure 6 As shown, the connection between the single horizontal support arm 22 and the single diagonal support arm 31 is fixedly connected by a locking button. The locking button serves as an angle locking switch for the diagonal barrier support mechanism 3 and is integrated at the hinge node between the diagonal support arm 31 and the horizontal barrier support mechanism 2.

[0045] The locking mechanism includes a positioning toothed sleeve 32, a polygonal guide rod 33, and a second support spring 34. Positioning toothed sleeves 32 are fitted at both ends of the polygonal guide rod 33. Both the polygonal guide rod 33 and the positioning toothed sleeves 32 pass through the fixed shaft and the shaft plate. The two positioning toothed sleeves 32 are slidably connected to the polygonal guide rod 33 via the second support spring 34. The cross-sections at both ends of the polygonal guide rod 33 are non-circular; they can be elliptical, semi-circular, regular polygonal, etc. In this embodiment, a regular hexagon is used as an example to ensure a circumferential anti-rotation fit with the grooves of the positioning toothed sleeves 32. The ends of the positioning toothed sleeves 32 have grooves that match the ends of the polygonal guide rod 33. The shaft plate of the inclined support arm 31 and the two positioning toothed sleeves... The sleeve 32 is connected by inter-tooth meshing, which fixes the position of the inclined support arm 31. The polygonal guide rod 33 is a long-axis metal rod that passes through the fixed shaft. An integrated annular baffle is provided in the center of the rod, which divides the fixed shaft into two equal cavities and serves as the axial limiting reference for the spring. There are two first support springs 123, which are respectively set in the two cavities. The first support springs 123 are sleeved on the polygonal guide rod 33. One end is connected to the end of the positioning tooth sleeve 32, and the other end is connected to the baffle. Manual pressing controls the engagement or disengagement of the positioning tooth sleeve 32 with the polygonal guide rod 33 and the inclined support arm 31, thereby locking or unlocking the inclined support arm 31.

[0046] The positioning sleeve 32 has a ring of evenly distributed meshing limiting teeth machined on the inner and outer circumference of the shaft plate of the inclined support arm 31. The inner side of the shaft plate of the inclined support arm 31 also has a ring of meshing teeth that are perfectly matched with the outer teeth of the positioning sleeve 32. By simultaneously meshing the outer teeth of the two positioning sleeves 32 with the inner teeth of the shaft plates of the two inclined support arms 31, the angle of the inclined support arm 31 can be precisely locked.

[0047] Example 2: A construction method for a fall arrest device used in building construction, such as... Figures 1-13 As shown, it includes the following steps: Step A: Assemble the fall arrestor; Erect the support positioning unit 1, align the anti-deviation seat 16 on the bottom surface of the horizontal support arm 22 with the reinforcing base 15 and insert it so that the end of the horizontal support arm 22 is inserted into the rotating support seat 13 and fixed by the connecting pin 6. The same operation is performed on the other side. Further rotate and wind the connecting belt 241, tighten or loosen the wire rope net 21, and then adjust the distance between the two horizontal support arms 22 to a suitable position. Then, snap the protective plate 23 into place, insert the steel cable 35 of appropriate length from the through hole of the inclined support arm 31, and pass it through the installation strip 36. The other end passes through the through hole and installation strip 36 on the other side, and screw in the locking buckle 8 to complete the installation.

[0048] Step B: Press the locking button to release the fixation of the oblique barrier support mechanism 3, and adjust the angle of the oblique barrier support mechanism 3; The operator holds the exposed ends of the two positioning tooth sleeves 32 with both hands, and it is important to note that another operator must press on the other side as well. At the same time, the two positioning tooth sleeves 32 are pushed inward. The positioning tooth sleeves 32 overcome the spring force and slide along the polygonal guide rod 33 towards the baffle until their outer teeth completely disengage from the meshing tooth ring of the inclined support arm 31 shaft plate. While maintaining the pushing state, a third operator can push the inclined support arm 31 to rotate freely and smoothly around the fixed axis to select a new desired angle. After reaching the new angle, the pushing force applied to the positioning tooth sleeves 32 is slowly released. The two positioning tooth sleeves 32 automatically reset under the action of the first support spring 123 and slide towards the shaft plate until their outer teeth are precisely engaged again in the corresponding new tooth position of the shaft plate tooth ring, completing the rigid locking of the new angle.

[0049] Step C: Adjust the storage buffer unit 24 so that the wire rope net 21 of the horizontal barrier support mechanism 2 has good buffering and bearing functions; c1. Adjust the compression of the third support spring 247 by turning the adjustment knob 246 to adjust the initial position of the buffer pressure seat 245 inside the mounting box 242; c2. Adjust the meshing pressure between the buffer pressure seat 245 and the connecting gear 244 by changing the position of the buffer pressure seat 245; c3. When the wire rope net 21 is impacted by falling material, the two wound connecting belts 241 are driven to rotate inward relative to each other by the wire rope net 21, and drive the connecting gear 244 to rotate through the connecting shaft 243. Under the elastic support of the third support spring 247, the buffer pressure seat 245 and the connecting gear 244 remain continuously meshed, thereby providing elastic support for the rotation process of the connecting gear 244.

[0050] When a falling object impacts the wire rope net 21, the wire rope net 21 will drive the two winding connecting belts 241 to move. At this time, the two winding connecting belts 241 rotate inward relative to each other to release the net. The connecting shaft 243 at one end of the winding connecting belt 241 drives the connecting gear 244 to rotate. Since the connecting gear 244 meshes and abuts against the bottom surface of the buffer pressure seat 245, the rotation of the connecting gear 244 will cause the buffer pressure seat 245 to slide in the mounting box 242. During this process, the third support spring 247 will be compressed or stretched, thereby absorbing the impact energy of the falling object, playing a role in buffering and shock absorption, reducing damage to the device and building structure, reducing the risk of secondary injury to construction personnel caused by the rebound of falling objects, and controlling the net release speed through elastic damping.

[0051] Step D: Linearly arrange and fix the multiple pre-installed fall arrest devices to the exterior wall surface of the building; The horizontal and vertical linear arrangements are fixed to provide large-area protection.

[0052] Step E: Pull and inspect steering tie rod 5 for repair; Manually pull the maintenance steering rod 5, causing the front end of the maintenance steering rod 5 to drive the horizontal barrier support mechanism 2 and the diagonal barrier support mechanism 3 to rotate towards the outer wall surface until the maintenance positioning component 12 is engaged and fixed with the maintenance positioning hole 4, thereby achieving positioning, shortening the operating gap between personnel and the horizontal barrier support mechanism 2 and the diagonal barrier support mechanism 3, and reducing the difficulty of maintenance.

[0053] When pulled, the edge of the horizontal support arm 22 first contacts the chamfered slope cone surface of the rear end of the positioning rod 122. The contact pressure causes the positioning rod 122 to overcome the preload of the first support spring 123 and retract into the mounting sleeve 121 until the inspection positioning hole 4 is aligned with the positioning rod 122. Then, due to the first support spring 123, it directly rebounds, completing the positioning and locking of the horizontal support arm 22.

[0054] Remove the protective plate 23, check the wear of the wire rope net 21 and the damping performance of the storage unit, rewind the wire rope net 21, restore the device to normal condition, after maintenance, install the protective plate 23 and fasten the buckle, pull the buckle to pull out the positioning rod 122, pull the maintenance steering rod 5 to slowly rotate the arm back to the 0° unfolded state, and re-lock the maintenance steering rod 5.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A fall protection device for construction work, characterized in that: It includes a support positioning unit (1), a horizontal barrier support mechanism (2) and an oblique barrier support mechanism (3), wherein the support positioning unit (1) is rotatably mounted at one end of the horizontal barrier support mechanism (2). The other end of the horizontal barrier support mechanism (2) is rotatably mounted with an oblique barrier support mechanism (3) via a locking button. When the locking button and the horizontal barrier support mechanism (2) are engaged, the angle of the oblique barrier support mechanism (3) is limited. The horizontal barrier support mechanism (2) has a maintenance steering rod (5) on its outer side, which drives the horizontal barrier support mechanism (2) to rotate on the support positioning unit (1).

2. The fall arrest device for construction work according to claim 1, characterized in that: The horizontal barrier support mechanism (2) includes a wire rope net (21), two horizontal arms (22) and a storage buffer unit (24). The two horizontal arms (22) are arranged opposite to each other. The storage buffer unit (24) is located inside the horizontal arms (22) and is used to tension the wire rope net (21). A protective plate (23) is detachably installed on the top surface of the horizontal arms (22). The wire rope net (21) is located between the protective plate (23) and the horizontal arms (22). The ends of the horizontal arms (22) are rotatably installed on the support positioning unit (1). Inspection positioning holes (4) are opened on both sides of the horizontal arms (22). An inspection steering rod (5) is movably installed on the outer side of the horizontal arms (22). The horizontal support arm (22) has a fixed shaft protruding from one end away from the support positioning unit (1), and the fixed shaft is equipped with an oblique blocking support mechanism (3) by means of a locking button.

3. The fall arrest device for construction work according to claim 2, characterized in that: The storage and buffer unit (24) includes a winding connecting strip (241), a mounting box (242), a connecting gear (244), a buffer pressure seat (245), and an adjustment knob (246). The mounting box (242) is fixedly installed in the inner cavity of the horizontal support arm (22) near the end of the support positioning unit (1). One end of the winding connecting strip (241) is provided with a connecting shaft (243). The connecting shaft (243) passes through the mounting box (242) and is connected to the connecting gear (244). The connecting gear (244) meshes with the bottom surface of the buffer pressure seat (245). The buffer pressure seat (245) is slidably installed in the mounting box (242). The adjustment knob (246) is screwed to the top surface of the mounting box (242). The adjustment knob (246) is connected to the top surface of the buffer pressure seat (245) through a third support spring (247). The other end of the winding connecting strip (241) is rotatably mounted on the inner cavity of the horizontal support arm (22), and the third support spring (247) is rotatably mounted on the adjustment knob (246).

4. The fall arrest device for construction work according to claim 3, characterized in that: The inclined barrier support mechanism (3) includes two inclined arms (31), locking buttons, several steel cables (35) and mounting strips (36). One end of the inclined arm (31) is provided with a shaft plate that is arranged opposite to it. The shaft plate is connected to the horizontal barrier support mechanism (2) through the locking buttons. The mounting strips (36) are fixedly installed inside the inclined arm (31). Several steel cables (35) pass through the inclined arm (31) and are fixedly connected to the mounting strips (36). Several steel cables (35) are erected between the two inclined arms (31) through the mounting strips (36).

5. The fall arrest device for construction work according to claim 4, characterized in that: The support positioning unit (1) includes a support base (11), a rotating support base (13), a limiting cover (14), and a reinforcing base (15). The rotating support base (13) is fixedly installed on the inner side of the support base (11). The horizontal blocking support mechanism (2) is rotatably installed on the rotating support base (13) through a connecting pin (6). Two maintenance positioning components (12) are installed opposite each other on the top surface of the rotating support base (13). The rotating support base (13) is concave in shape. A limiting cover (14) is fixedly installed on the side of the rotating support base (13) away from the maintenance positioning component (12). A reinforcing base (15) is fixedly installed on the front end face of the limiting cover (14). An anti-deviation seat (16) is installed between the reinforcing base (15) and the horizontal blocking support mechanism (2).

6. The fall arrest device for construction work according to claim 5, characterized in that: The maintenance positioning assembly (12) includes an installation sleeve (121), a positioning rod (122), and a first support spring (123). The installation sleeve (121) is fixedly installed on the top baffle of the rotating support seat (13). The positioning rod (122) is slidably installed in the installation sleeve (121) through the first support spring (123). The positioning rod (122) is adapted to the maintenance positioning hole (4).

7. The fall arrest device for construction work according to claim 6, characterized in that: The locking mechanism includes a positioning tooth sleeve (32), a polygonal guide rod (33), and a second support spring (34). The polygonal guide rod (33) has positioning tooth sleeves (32) fitted at both ends. The polygonal guide rod (33) and the positioning tooth sleeves (32) pass through the fixed shaft and the shaft plate. The two positioning tooth sleeves (32) are slidably connected to the polygonal guide rod (33) through the second support spring (34). The cross-section of the two ends of the polygonal guide rod (33) is non-circular. The end of the positioning tooth sleeve (32) has a groove that matches the end of the polygonal guide rod (33). The shaft plate of the inclined support arm (31) is connected to the two positioning tooth sleeves (32) through inter-tooth meshing.

8. A construction method for a fall arrest device used in building construction, characterized in that, The construction of the fall arrestor for building construction as described in claim 7 includes the following steps: Step A: Assemble the fall arrestor; Step B: Press the locking button to release the fixation of the oblique barrier support mechanism (3) and adjust the angle of the oblique barrier support mechanism (3); Step C: Adjust the storage buffer unit (24) so ​​that the wire rope net (21) of the horizontal barrier support mechanism (2) has good buffering and bearing functions; Step D: Linearly arrange and fix the multiple pre-installed fall arrest devices to the exterior wall surface of the building; Step E: Pull and inspect the steering tie rod (5) to perform the inspection.

9. The construction method of a fall arrest device for building construction according to claim 8, characterized in that: The specific adjustment steps in step C include: c1. Adjust the compression of the third support spring (247) by turning the adjustment knob (246) to adjust the initial position of the buffer pressure seat (245) in the mounting box (242); c2. Adjust the meshing pressure between the buffer pressure seat (245) and the connecting gear (244) by changing the position of the buffer pressure seat (245); c3. When the wire rope net (21) is impacted by falling material, the two winding connecting belts (241) are driven to rotate inward relative to each other by the wire rope net (21), and drive the connecting gear (244) to rotate through the connecting shaft (243). Under the elastic support of the third support spring (247), the buffer pressure seat (245) and the connecting gear (244) remain continuously meshed, thereby providing elastic support for the rotation process of the connecting gear (244).

10. The construction method of a fall arrest device for building construction according to claim 8, characterized in that: In step E, the maintenance steering rod (5) is manually pulled, causing the front end of the maintenance steering rod (5) to drive the horizontal barrier support mechanism (2) and the diagonal barrier support mechanism (3) to rotate toward the outer wall surface until the maintenance positioning component (12) is engaged and fixed with the maintenance positioning hole (4), thereby achieving positioning, shortening the operating gap between personnel and the horizontal barrier support mechanism (2) and the diagonal barrier support mechanism (3), and reducing the difficulty of maintenance.

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