A kind of anti-falling mechanism for steel structure engineering construction

Abstract

This invention discloses a fall arrest mechanism for steel structure construction, relating to the field of engineering protection technology, including: steel wire ropes, columns, fall arrest slides, and safety ropes. The invention employs two steel wire ropes distributed vertically and vertically, along with a fall arrest slide, to form the fall arrest mechanism. The double steel wire rope design effectively suppresses twisting and bouncing during the slide's movement, ensuring smooth movement of the slide as it follows the worker. Furthermore, the use of upper and lower guide wheels, each engaging with one of the two steel wire ropes, further ensures the smoothness of the slide's movement. A locking structure, consisting of a pressure bar and a pressure block triggered by the downward pull of the connecting rope, is installed inside the slide. This directly converts the impact force of a worker's fall into the clamping force of the steel wire ropes, preventing lateral sliding of the slide in the event of an accidental fall and reducing the probability of the worker colliding with the steel structure.

Description

Technical Field

[0001] This invention relates to the field of engineering protection technology, and in particular to a fall protection mechanism for steel structure engineering construction. Background Technology

[0002] During the construction of steel structure buildings, workers at height face a significant risk of falling. Currently, the most common fall protection measure is the installation of a horizontal lifeline system. This involves stringing one or more steel cables across the work area, with workers connected to the lifeline via hooks or sliders on their safety harnesses, enabling them to move within a certain range for protection.

[0003] However, the existing single-wire rope lifeline system provides limited guiding stability. When workers move, the connected sliders or hooks are prone to twisting or jamming, resulting in poor movement smoothness and affecting work efficiency. Furthermore, it is prone to significant swaying when encountering crosswinds. In the event of a fall, the impact force of the falling personnel may cause instantaneous off-center loading of the single-point locking mechanism, posing a risk of locking failure or delay. There is still room for improvement in safety. Moreover, in order to ensure support stability, a single-wire rope lifeline requires multiple sets of columns as support points at intervals. When the sliders or hooks connected to the workers pass through the columns, they are obstructed. For areas with large working depths, such as steel structure building roofs and longitudinal beams, it is inconvenient for workers to move.

[0004] Therefore, it is necessary to invent a fall protection mechanism for steel structure construction to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a fall protection mechanism for steel structure construction to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a fall arrest mechanism for steel structure construction, comprising:

[0007] Two steel wire ropes are installed horizontally and distributed vertically;

[0008] Multiple vertically arranged columns are evenly distributed along the steel wire rope. The columns are used to fix the steel structure project surface and provide support for the steel wire rope.

[0009] A fall arrestor slide is slidably installed between two steel wire ropes. The top of the fall arrestor slide is fixedly equipped with an upper bracket, and upper guide wheels are rotatably installed at both ends of the upper bracket. The bottom of the fall arrestor slide is equipped with a lower bracket, and lower guide wheels are rotatably installed at both ends of the lower bracket. The upper and lower guide wheels are respectively grooved to fit the upper sides of the two steel wire ropes. Pressure rods are rotatably installed at both ends of the lower bracket. An arc-shaped pressure block is fixedly installed at the top of each pressure rod. The arc-shaped pressure block is used to press the lower side of the lower steel wire rope to lock the position between the fall arrestor slide and the steel wire rope. A connecting rope is installed between the bottom ends of the two pressure rods.

[0010] A safety rope, the top of which is fitted onto the outside of a connecting rope, is used to connect the worker's safety belt to the connecting rope.

[0011] Preferably, it also includes a pressure seat, which has two and is rotatably installed at both ends inside the lower card seat. A hard rubber pressure roller is rotatably installed on the top of the pressure seat. The hard rubber pressure roller is used to cooperate with the lower guide wheel to restrict the anti-fall slide frame to the upper side of the lower wire rope. A top rod is fixedly installed at the bottom of the pressure seat. The bottom end of the top rod slides against the surface of the pressure rod.

[0012] Preferably, it also includes guide rods and guide grooves. Two guide rods are provided and fixedly installed on the top of the two pressure seats respectively. Two guide grooves are provided and pass through the inner ends of the lower pressure seat respectively. Both guide grooves are designed as arc-shaped structures. The guide grooves and guide rods are used to limit the rotation range of the pressure seat. When the guide rod moves to the bottom of the guide groove, the pressure seat rotates to the maximum angle. When the pressure seat rotates to the maximum angle, the two hard rubber pressure rollers are located between the two lower guide rollers.

[0013] Preferably, it also includes positioning pins, which are provided in two and fixedly installed in the middle of the two pressure rods respectively, and both positioning pins are rotatably installed on one side of the lower bracket;

[0014] A tension spring is fixedly installed on the top of one side of two pressure rods that are close to each other. The tension spring provides a force to bring the two pressure rods closer together, so that the tops of the two pressure rods are close together. When the tops of the two pressure rods are close together, the arc-shaped pressure block separates from the wire rope.

[0015] Preferably, it also includes two hanging ears, which are respectively provided and pass through both ends of the connecting rope, and the two hanging ears are respectively connected to the bottom ends of the two pressure rods by bolts;

[0016] The nylon reinforcing rib is fixedly installed on the middle of the outer surface of the connecting rope and slides against the top of the safety rope.

[0017] Preferably, it also includes a rubber positioning wheel, which is rotatably mounted on the middle of the outer side of the anti-fall slide and located between two upper guide wheels. The outer side wall of the rubber positioning wheel is surrounded by multiple rubber protrusions. The rubber positioning wheel is used to cooperate with the upper guide wheels to limit the position of the upper wire rope.

[0018] Preferably, it also includes a side plate, which is fixedly installed on the outside of the lower bracket, and a gap is provided between the side plate and the lower guide wheel for the steel wire rope to pass through, and a groove is provided at the center of the top of the side plate.

[0019] Preferably, it also includes supports, which are provided in multiple and fixedly installed on the top of multiple columns. The supports located at both ends of the wire rope are fixedly connected to the wire rope by bolts. The top of the outer side of the remaining supports are fixedly installed with hooks, which are used to provide support for the wire rope above.

[0020] Preferably, it also includes a mounting base, which is fixedly installed at the bottom end of the column. The mounting base has a mounting groove in the middle of its outer side, and a positioning rod is installed through the middle of the mounting groove. A locking block is fixedly installed at one end of the positioning rod, and a nut is threaded onto the other end of the positioning rod, with the nut located on the outside of the mounting base.

[0021] Preferably, it also includes an adjusting seat, which is fixedly installed on the outside of the mounting base and located above the groove of the mounting slot, and an adjusting bolt is threadedly installed in the middle of the adjusting seat.

[0022] The technical effects and advantages of this invention are as follows:

[0023] 1. This invention employs two steel wire ropes distributed vertically to form a fall protection mechanism with the fall protection slide. The double steel wire rope design effectively suppresses twisting and jumping during the sliding process of the fall protection slide, ensuring the smoothness of the fall protection slide as it moves with the worker. Furthermore, by using upper and lower guide wheels to cooperate with the two steel wire ropes respectively, the smoothness of the fall protection slide's movement is further ensured. By setting a locking structure inside the fall protection slide, consisting of a pressure bar and a pressure block triggered by the downward pull of the connecting rope, the impact force of the worker's fall is directly converted into the clamping force of the fall protection slide to hold the steel wire rope, ensuring that the fall protection slide will not slide laterally when the worker falls accidentally, thereby reducing the probability of the worker colliding with the steel structure after falling, and improving the device's protection effect on the worker.

[0024] 2. This invention uses multiple sets of columns to support and fix the wire rope in the steel structure construction work area. The column in the middle supports the wire rope through the hook at its top. The hook supports the wire rope without affecting the passage of the upper guide wheel. This ensures the stability of the wire rope support and the smooth sliding of the anti-fall slide. By setting the mounting base at the bottom of the column, the mounting base can be quickly fixed in the steel structure construction work area through the quick-release structure composed of the mounting base and the positioning rod. This facilitates the layout and use of the device and will not damage the steel structure. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the anti-fall slide structure of the present invention. Figure 1 .

[0027] Figure 3 This is a schematic diagram of the anti-fall slide structure of the present invention. Figure 2 .

[0028] Figure 4 This is a cross-sectional schematic diagram of the anti-fall slide structure of the present invention.

[0029] Figure 5 This is a schematic diagram of the pressure bar structure of the present invention.

[0030] Figure 6 This is an exploded view of the anti-fall slide structure of the present invention.

[0031] Figure 7 This is a schematic diagram of the column structure of the present invention.

[0032] Figure 8 This is a schematic diagram of the mounting base structure of the present invention.

[0033] Figure 9 This is a schematic diagram of the mounting base structure of the present invention in its installation state.

[0034] In the diagram: 1. Steel wire rope; 2. Column; 3. Anti-fall slide; 4. Safety rope; 21. Support; 22. Mounting seat; 23. Positioning rod; 24. Adjusting seat; 31. Upper clamping seat; 32. Lower clamping seat; 33. Pressure seat; 34. Pressure rod; 35. Connecting rope; 36. Rubber positioning wheel; 37. Side plate; 211. Hook; 221. Mounting groove; 231. Clamping block; 232. Shear nut; 241. Adjusting bolt; 311. Upper guide wheel; 321. Lower guide wheel; 331. Hard rubber pressure wheel; 332. Guide rod; 3321. Guide groove; 333. Top rod; 341. Arc-shaped pressure block; 342. Positioning pin; 343. Tension spring; 351. Hanging lug; 352. Nylon reinforcing rib. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figures 1 to 9 As shown, the fall arrest mechanism for steel structure construction provided by the present invention is essentially a fall arrest mechanism that can quickly lock the position when a worker accidentally falls, thereby reducing the probability of the worker colliding with the steel structure building.

[0037] In terms of specific structural installation, the structural body can be constructed according to the inventive concept of this embodiment. In this embodiment, no special limitations are imposed.

[0038] In this embodiment, a fall arrest mechanism for steel structure construction includes:

[0039] Two steel wire ropes 1 are arranged horizontally and distributed vertically. The steel wire ropes 1 are made of stainless steel rope with a diameter of 120-150mm. The two steel wire ropes 1 are arranged vertically and parallelly to form the slide rail of the fall protection mechanism.

[0040] The columns 2 are vertically arranged in multiples and evenly distributed along the steel wire rope 1. The columns 2 are used to fix the steel structure surface and provide support for the steel wire rope 1. The columns 2 are made of galvanized steel pipes, which can be made of a whole square tube or two square tubes nested on the top and bottom to form a height-adjustable support structure.

[0041] Supports 21 are provided in multiple and are fixedly installed on the top of multiple columns 2. The supports 21 located at both ends of the wire rope 1 are fixedly connected to the wire rope 1 by bolts. The top of the outer side of the remaining supports 21 are fixedly installed with hooks 211, which are used to provide support for the wire rope 1 above.

[0042] Mounting base 22 is fixedly installed at the bottom end of column 2. The outer side of mounting base 22 has a mounting groove 221 in the middle. A positioning rod 23 is installed through the middle of the mounting groove 221. A locking block 231 is fixedly installed at one end of the positioning rod 23. A nut 232 is installed at the other end of the positioning rod 23 by thread. The nut 232 is located on the outside of mounting base 22. Mounting base 22 can be inserted into the edge of steel beams, longitudinal beams, and I-beams through mounting groove 221. The locking block 231 and the positioning rod 23 lock the other edge of the steel beams, longitudinal beams, and I-beams to achieve the installation and fixation of mounting base 22.

[0043] Adjustment seat 24 is fixedly installed on the outside of mounting seat 22 and above the groove of mounting slot 221. Adjustment bolt 241 is threadedly installed in the middle of adjustment seat 24. Adjustment bolt 241 is used to tighten the upper surface of steel structure crossbeam, longitudinal beam and I-beam to improve the installation stability of mounting seat 22.

[0044] The fall arrestor slide 3 is slidably installed between two steel wire ropes 1. The top of the fall arrestor slide 3 is fixedly provided with an upper bracket 31. The upper guide wheel 311 is rotatably installed at both ends of the upper bracket 31. The bottom of the fall arrestor slide 3 is fixedly provided with a lower bracket 32. The lower guide wheel 321 is rotatably installed at both ends of the lower bracket 32. The upper guide wheel 311 and the lower guide wheel 321 are respectively grooved and fitted to the upper side of the upper and lower steel wire ropes 1.

[0045] Two pressure seats 33 are rotatably mounted on both ends of the lower seat 32. A hard rubber pressure wheel 331 is rotatably mounted on the top of the pressure seat 33. The hard rubber pressure wheel 331 is used to cooperate with the lower guide wheel 321 to restrict the fall arrestor slide 3 to the upper side of the lower wire rope 1. A top rod 333 is fixedly mounted on the bottom of the pressure seat 33. The bottom end of the top rod 333 slides against the outer wall of the pressure rod 34. When the fall arrestor slide 3 is pulled by the worker and the safety rope 4, the pressure rod 34 on the force side squeezes the top rod 333 so that the hard rubber pressure wheel 331 and the lower guide wheel 321 are in cooperation, thereby ensuring that the lower guide wheel 321 and the lower wire rope 1 are always in a mechanical engagement state to prevent the fall arrestor slide 3 from falling off.

[0046] The lower bracket 32 ​​has pressure rods 34 rotatably installed at both ends. The top of each pressure rod 34 is fixedly installed with an arc-shaped pressure block 341. The arc-shaped pressure block 341 is used to squeeze the lower side of the lower wire rope 1 to lock the position between the anti-fall slide 3 and the wire rope 1. A connecting rope 35 is installed between the bottom ends of the two pressure rods 34.

[0047] Guide rods 332 and guide grooves 3321 are provided. Two guide rods 332 are provided and fixedly installed on the top of two pressure seats 33 respectively. Two guide grooves 3321 are provided and pass through the two ends of the lower card seat 32 respectively. Both guide grooves 3321 are designed with arc-shaped structures. The guide grooves 3321 and guide rods 332 are used to limit the rotation range of the pressure seat 33. When the guide rods 332 move to the bottom of the guide grooves 3321, the pressure seat 33 rotates to the maximum angle. When the pressure seat 33 rotates to the maximum angle, two hard rubber pressure rollers 331 are located between the two lower guide rollers 321. The hard rubber pressure rollers 331 are made of polyurethane or nitrile rubber, which can undergo small deformation and quickly return to their original position.

[0048] Two positioning pins 342 are provided and fixedly installed in the middle of the two pressure rods 34 respectively, and both positioning pins 342 can be rotatably installed on one side of the lower bracket 32;

[0049] The tension spring 343 is fixedly installed on the top of the two pressure rods 34 on the side that are close to each other. The tension spring 343 provides a force for the two pressure rods 34 to move closer to each other so that the tops of the two pressure rods 34 move closer to each other. When the tops of the two pressure rods 34 move closer to each other, the arc-shaped pressure block 341 separates from the wire rope 1.

[0050] Two lugs 351 are provided and pass through both ends of the connecting rope 35 respectively, and the two lugs 351 are respectively connected to the bottom ends of the two pressure rods 34 by bolts.

[0051] The rubber positioning wheel 36 is rotatably mounted on the middle of the outer side of the anti-fall slide 3 and located between the two upper guide wheels 311. Multiple rubber protrusions are installed around the outer side wall of the rubber positioning wheel 36. The rubber positioning wheel 36 is used to cooperate with the upper guide wheel 311 to limit the position of the upper wire rope 1. The rubber positioning wheel 36 is made of rubber injection molding, and its outer ring rubber protrusions are made of soft TPU material to ensure quick reset after deformation.

[0052] Side plate 37 is fixedly installed on the outside of lower bracket 32. There is a gap between side plate 37 and lower guide wheel 321 for the steel wire rope 1 to pass through. There is a groove in the middle of the top of side plate 37. Side plate 37 and lower bracket 32 ​​are connected by studs. Side plate 37 and lower bracket 32 ​​together form a shell structure with an internal cavity, which is used to accommodate arc-shaped pressure block 341 and provide movement space for arc-shaped pressure block 341.

[0053] The nylon reinforcing rib 352 is fixedly installed on the middle of the outer surface of the connecting rope 35 and slides against the top of the safety rope 4. The connecting rope 35 is a high molecular weight polyethylene fiber rope with an outer braided sheath and a wear-resistant nylon reinforcing rib 352 sewn in the middle. The surface of the nylon reinforcing rib 352 is smooth to ensure smooth sliding of the top of the safety rope 4.

[0054] Safety rope 4, with its top end sleeved on the outside of connecting rope 35, is used to connect the worker's safety belt to connecting rope 35. The top end of safety rope 4 is connected to connecting rope 35 via an alloy safety hook.

[0055] When using the fall protection mechanism for steel structure construction in this embodiment, firstly, two steel wire ropes 1 are fixed to the working area of ​​the steel structure building through the column 2. Select an appropriate number of columns 2 (e.g., one column 2 is set at a 5-meter interval) according to the range of the working area of ​​the steel structure building. Fix them to the crossbeams, longitudinal beams, I-beams and other structures of the steel structure through the mounting base 22 at the bottom of the column 2. Then, fix the two ends of the steel wire rope 1 to the top of the column 2 at both ends of the working area with bolts and fasteners, and ensure that the upper steel wire rope 1 passes through the hook 211 at the top of the other column 2. At this point, the fixing of the steel wire rope 1 is completed. The two steel wire ropes 1 form the lifeline part of the fall protection mechanism. It should be noted that the length of the column 2 is higher than the height of the worker to ensure that the height of the steel wire rope 1 is higher than the height of the worker.

[0056] When workers enter the work area, their safety belts are connected to the connecting rope 35 at the bottom of the fall arrestor slide 3 via the safety rope 4 (the safety rope 4 can be installed on the outside of the connecting rope 35 via a safety buckle). After arriving at the work area, the workers place the fall arrestor slide 3 on the outside of the wire rope 1 and adjust its position so that it cuts into the two wire ropes 1 along a downward oblique path. At this time, the upper wire rope 1 squeezes the rubber positioning wheel 36, deforming the rubber protrusion on its outer side. Then, the upper wire rope 1 is inserted under the two upper guide wheels 311, and the lower wire rope 1 passes through the gap between the side plate 37 and the lower guide wheel 321, and then is inserted under the two lower guide wheels 321. At this time, the fall arrestor slide 3 and the two wire ropes 1 are initially connected. The workers can then turn the pressure seat 33, causing it to rotate around the pin at its bottom. During the process, the hard rubber pressure roller 331 is rotated, causing it to rotate closer to the lower guide roller 321 and adhere to the surface of the wire rope 1. The pressure seat 33 is then turned until it rotates to its maximum angle. During this process, the hard rubber pressure roller 331 undergoes a slight deformation due to the reaction force of the wire rope 1 and continues to rotate with the pressure seat 33. After the pressure seat 33 rotates to its maximum angle, the hard rubber pressure roller 331 rotates from the outside of the lower guide roller 321 to the inside of the lower guide roller 321 (i.e., the hard rubber pressure roller 331 crosses the line connecting the center of the lower guide roller 321 and the center of the wire rope 1). At this time, the hard rubber pressure roller 331 generates a reaction force on the wire rope 1 to achieve mechanical locking between the wire rope 1 and the lower guide roller 321, ensuring a stable connection between the lower guide roller 321 and the wire rope 1. Thus, the fall arrestor 3 and the wire rope 1 are combined, and the workers can carry out steel structure work in the work area.

[0057] During normal operation, the movement of the worker is transmitted to the fall arrestor slide 3 via the safety rope 4 and connecting rope 35, causing the fall arrestor slide 3 to slide along the wire rope 1. During this process, the worker's movement increases the angle between the safety rope 4 and the fall arrestor slide 3, causing the top of the safety rope 4 to slide along the connecting rope 35. When the worker's movement is too large, the top of the safety rope 4 first slides to one end of the connecting rope 35, and then the safety rope 4 applies a traction force to one end of the connecting rope 35. This traction force is transmitted through the pressure bar 3. 4. The force is transferred to the anti-fall slide 3, causing the anti-fall slide 3 to slide along the wire rope 1. Since the traction force is only applied to a single pressure bar 34 and is offset by the tension spring 343, the pressure bar 34 will only rotate slightly during the transmission of the force. The arc-shaped pressure block 341 at the top of the pressure bar 34 will not contact the wire rope 1, and the anti-fall slide 3 can slide smoothly. When the anti-fall slide 3 passes the column 2, the rubber positioning wheel 36 is deformed by the pressure of the hook 211 to ensure that the anti-fall slide 3 passes the column 2 smoothly.

[0058] When a worker falls accidentally, the huge impact force generated by the fall is transmitted to the connecting rope 35 through the safety rope 4. Since the worker falls downward, this force is transmitted to the connecting rope 35 and forms a downward tension, causing the connecting rope 35 to deform downward in the middle. At the same time, the connecting rope 35 drives the bottom ends of the two pressure rods 34 to move downward, so that the pressure rods 34 rotate. At this time, the arc-shaped pressure blocks 341 at the top of the two pressure rods 34 move quickly toward the wire rope 1 and cooperate with the lower guide wheel 321 to clamp the wire rope 1, so as to lock the position of the fall arresting slide 3 and prevent the fall arresting slide 3 from sliding along the wire rope 1, causing the worker to swing and collide with the steel structure.

[0059] After the rescue of the workers is completed, the impact of the fall is released. At this time, the two pressure rods 34 are reset under the force of the tension spring 343, and the arc-shaped pressure block 341 at the top of the pressure rod 34 separates from the wire rope 1. At this time, the anti-fall slide 3 can continue to slide along the wire rope 1 to facilitate the transfer of workers.

[0060] It should be noted that this embodiment only provides the lifeline-related structures in the fall protection structure. For the safety belts and safety belt buckles of the workers, the existing technologies that have been disclosed are adopted.

[0061] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fall protection mechanism for steel structure construction, characterized in that, include: Two steel wire ropes (1) are installed horizontally and distributed vertically; The columns (2) are vertically arranged in multiple positions and evenly distributed along the wire rope (1). The columns (2) are used to fix the steel structure project surface and provide support for the wire rope (1). A fall arrestor slide (3) is slidably installed between two steel wire ropes (1). An upper bracket (31) is fixedly provided at the top of the fall arrestor slide (3). Upper guide wheels (311) are rotatably installed at both ends of the upper bracket (31). A lower bracket (32) is fixedly provided at the bottom of the fall arrestor slide (3). Lower guide wheels (321) are rotatably installed at both ends of the lower bracket (32). The upper guide wheels (311) and lower guide wheels (321)... The grooves of the lower and upper steel wire ropes (1) are respectively fitted to the upper side. The two ends of the lower bracket (32) are respectively rotatably equipped with pressure rods (34). The top of the two pressure rods (34) are fixedly equipped with arc-shaped pressure blocks (341). The arc-shaped pressure blocks (341) are used to squeeze the lower side of the lower steel wire rope (1) to lock the position between the anti-fall slide (3) and the steel wire rope (1). A connecting rope (35) is installed between the bottom ends of the two pressure rods (34). The pressure seat (33) has two parts, which are rotatably installed at both ends of the lower card seat (32). The top of the pressure seat (33) is rotatably equipped with a hard rubber pressure wheel (331). The hard rubber pressure wheel (331) is used to cooperate with the lower guide wheel (321) to restrict the anti-fall slide (3) to the upper side of the lower wire rope (1). The bottom end of the pressure seat (33) is fixedly installed with a top rod (333). The bottom end of the top rod (333) slides against the surface of the pressure rod (34). Guide rod (332) and guide groove (3321). There are two guide rods (332) and they are fixedly installed on the top of the two pressure seats (33). There are two guide grooves (3321) and they are respectively installed through the two ends of the lower card seat (32). Both guide grooves (3321) are arc-shaped. The guide grooves (3321) and guide rods (332) are used to limit the rotation range of the pressure seat (33). When the guide rod (332) moves to the bottom of the guide groove (3321), the pressure seat (33) rotates to the maximum angle. When the pressure seat (33) rotates to the maximum angle, the two hard rubber pressure rollers (331) are located between the two lower guide rollers (321). Positioning pins (342) are provided in two and are fixedly installed in the middle of the two pressure rods (34), and both positioning pins (342) can be rotatably installed on one side of the lower bracket (32); A tension spring (343) is fixedly installed on the top of the two pressure rods (34) on the side that are close to each other. The tension spring (343) provides a force for the two pressure rods (34) to move closer to each other so that the tops of the two pressure rods (34) move closer to each other. When the tops of the two pressure rods (34) move closer to each other, the arc-shaped pressure block (341) separates from the wire rope (1). The two hanging ears (351) are provided and pass through both ends of the connecting rope (35), and the two hanging ears (351) are respectively connected to the bottom ends of the two pressure rods (34) by bolts; Nylon reinforcing rib (352) is fixedly installed on the middle of the outer surface of the connecting rope (35) and slides against the top of the safety rope (4); A safety rope (4) with its top end fitted onto the outside of a connecting rope (35) is used to connect the worker's safety belt to the connecting rope (35).

2. The fall arrest mechanism for steel structure construction according to claim 1, characterized in that, Also includes: A rubber positioning wheel (36) is rotatably mounted on the middle of the outer side of the anti-fall slide (3) and located between two upper guide wheels (311). Multiple rubber protrusions are installed around the outer side wall of the rubber positioning wheel (36). The rubber positioning wheel (36) is used to cooperate with the upper guide wheel (311) to limit the position of the upper wire rope (1).

3. The anti-fall mechanism for steel structure construction according to claim 1, characterized in that, Also includes: A side plate (37) is fixedly installed on the outside of the lower bracket (32). A gap is provided between the side plate (37) and the lower guide wheel (321) for the wire rope (1) to pass through. A groove is provided at the center of the top of the side plate (37).

4. The fall arrest mechanism for steel structure construction according to claim 1, characterized in that, Also includes: Supports (21) are provided in multiple and are fixedly installed on the top of multiple columns (2). The supports (21) located at both ends of the wire rope (1) are fixedly connected to the wire rope (1) by bolts. The top of the outer side of the other supports (21) are fixedly installed with hooks (211). The hooks (211) are used to provide support for the wire rope (1) above.

5. A fall arrest mechanism for steel structure construction according to claim 1, characterized in that, Also includes: Mounting base (22) is fixedly installed at the bottom of column (2). Mounting base (22) has a mounting groove (221) in the middle of its outer side. A positioning rod (23) is installed through the middle of the mounting groove (221). A locking block (231) is fixedly installed at one end of the positioning rod (23). A nut (232) is installed at the other end of the positioning rod (23) by thread. The nut (232) is located on the outside of the mounting base (22).

6. A fall arrest mechanism for steel structure construction according to claim 5, characterized in that, Also includes: Adjustment seat (24) is fixedly installed on the outside of mounting seat (22) and above the groove of mounting groove (221). Adjustment bolt (241) is threadedly installed in the middle of adjustment seat (24).

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