A retractable safety net for high-altitude operations
By designing a retractable safety net for high-altitude operations, and utilizing fixed blocks and a motor-driven screw system, the problem of traditional safety nets being unable to be flexibly adjusted is solved, achieving stable protection within different construction areas and ensuring the safety of construction personnel.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 李淑娟
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional safety nets cannot be adjusted flexibly, resulting in insufficient protection or incompatibility when the construction area is too narrow or too wide, threatening the safety of construction workers.
A retractable safety net for high-altitude operations was designed. By setting fixed blocks on the support plate and a motor-driven screw system, the tension and range of the safety net can be adjusted, thus achieving flexible adjustment of the safety net.
The safety net provides stable protection in different construction areas, ensuring the safety of construction workers and preventing fall accidents.
Smart Images
Figure CN224452304U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a safety net, and more particularly to a retractable safety net for high-altitude operations. Background Technology
[0002] As building heights increase, so do fall-from-height accidents, posing a significant threat to the lives of construction workers. On construction sites, frequent work at heights means the risk of people and objects falling is ever-present, necessitating effective protective measures to ensure the safety of construction workers.
[0003] Chinese Patent CN218324037U discloses a retractable safety net protection device for high-altitude operations. This device involves securing steel wire ropes to the upper ends of two horizontal or vertical steel structure columns, and then installing a safety net onto the wire ropes using fasteners. When hoisting materials, the safety net is retracted to one end, and after hoisting, it is retracted to form a protective measure. This effectively solves the problem of inconvenience caused by the conflict between safety net protection and hoisting operations during steel structure installation. Furthermore, the device has a simple structure, is easy to install, and has significant value for use and promotion.
[0004] When the construction area is too narrow or too wide, traditional safety nets cannot be adjusted flexibly, resulting in insufficient protection or incompatibility, which threatens the safety of construction workers. Utility Model Content
[0005] The main objective of this invention is to provide a retractable safety net for high-altitude operations to solve the problems raised in related technologies.
[0006] To achieve the above objectives, according to one aspect of the present invention, a retractable safety net for high-altitude operations is provided, comprising an installation frame welded to the side wall of a wall, two first support plates symmetrically and slidably arranged on one side of the installation frame, a second support plate slidably arranged at the bottom of the first support plates, a safety net slidably arranged between the two first support plates and the second support plates, and fixing blocks fixedly arranged at the four corner edges of the safety net, the fixing blocks being slidably arranged inside the support plates, the fixing blocks being used to adjust the tension of the safety net.
[0007] Furthermore, a limiting groove is provided on one side of the fixing block. The limiting groove is U-shaped. The limiting groove of each fixing block passes through the perimeter of the safety net. The fixing block is provided with a positioning groove that communicates with the limiting groove. A positioning pin is threaded into the positioning groove.
[0008] Furthermore, both the first support plate and the second support plate are provided with grooves and mounting slots. The fixing block of the safety net near one end of the mounting frame is fixedly installed in the groove, and the fixing block at the other end is slidably installed in the groove.
[0009] Furthermore, a connecting block is fixedly connected to one side of the fixing block, and a screw is rotatably disposed in the groove. The screw passes through the fixing block at the end away from the mounting bracket and is threadedly connected to it.
[0010] Furthermore, a second motor is fixedly installed in the mounting slot, and the output shaft of the second motor is fixedly connected to one end of the screw.
[0011] Furthermore, a slider is fixedly connected to one end of the first support plate, a screw hole is opened through the slider, a groove is opened on one side of the mounting bracket, and the slider is slidably disposed in the groove.
[0012] Furthermore, the first support plate has a slot at its bottom, and the second support plate has a connecting strip fixedly connected to its top. The connecting strip is slidably disposed in the slot, and the side wall of the first support plate is threaded with several screws for fixing the connecting strip.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. In this type of retractable high-altitude work safety net, fixing blocks are fixedly installed at the four corner edges of the safety net. A limiting groove is opened on one side of the fixing block for passing through the edge of the safety net. The length of the safety net extending out of the limiting groove is fixed by positioning nails, thereby adjusting the tension of the safety net and preventing the safety net from loosening or falling off during use, thus ensuring the stability of its protective function.
[0015] 2. In this retractable high-altitude work safety net, the first support plate is symmetrically slidably mounted on the mounting frame, which allows for adjustment of the distance between the two first support plates to adapt to the needs of different construction ranges and improve the applicability of the safety net; the second support plate slides at the bottom of the first support plate and can flexibly adjust its position according to changes in the construction range. In conjunction with the first support plate, it increases the overall protection range of the safety net and ensures that it can provide sufficient protection for construction personnel in different construction scenarios. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of the retractable high-altitude work safety net in a preferred embodiment of the present invention;
[0017] Figure 2 This is a preferred embodiment of the present invention. Figure 1 Enlarged schematic diagram of the structure at point A in the middle;
[0018] Figure 3 This is a schematic diagram of the safety net installation structure in a preferred embodiment of the present invention;
[0019] Figure 4 This is a cross-sectional view of the first support plate in a preferred embodiment of the present invention;
[0020] Figure 5 This is a preferred embodiment of the present invention. Figure 4 Enlarged schematic diagram of the structure at point B;
[0021] Figure 6 This is a schematic diagram of the overall structure of the fixing block in a preferred embodiment of the present invention;
[0022] Figure 7 This is a plan view of the fixing block in a preferred embodiment of the present invention.
[0023] Figure label:
[0024] 1. Mounting bracket; 11. Slide rail; 12. First motor;
[0025] 2. First support plate; 21. Groove; 22. Screw; 23. Mounting slot; 24. Second motor; 25. Slot; 26. Screw; 27. Slider; 271. Screw hole;
[0026] 3. Second support plate; 31. Connecting strip;
[0027] 4. Safety net; 5. Fixing block; 51. Limiting groove; 52. Positioning pin; 53. Connecting block. Detailed Implementation
[0028] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.
[0029] This embodiment provides a retractable safety net for high-altitude operations, including a mounting frame 1 welded to the side wall of a wall. Two first support plates 2 are symmetrically slidably arranged on one side of the mounting frame 1, and a second support plate 3 is slidably arranged at the bottom of the first support plates 2. A safety net 4 is slidably arranged between the two first support plates 2 and the second support plates 3. Fixing blocks 5 are fixedly arranged at the four corner edges of the safety net 4. The fixing blocks 5 are slidably arranged inside the support plates and are used to adjust the tension of the safety net 4.
[0030] like Figure 3 , Figure 6 and Figure 7As shown, a limiting groove 51 is provided on one side of the fixing block 5. The limiting groove 51 is U-shaped. The safety net 4 passes through the limiting groove 51 of each fixing block 5 at its four edges. The fixing block 5 is provided with a positioning groove that communicates with the limiting groove 51. A positioning pin 52 is threaded into the positioning groove. After adjusting the length of the safety net 4 extending out of the limiting groove 51 according to specific needs, the positioning pin 52 is tightened. The positioning pin 52 will gradually exert force on the edge of the safety net 4, fixing it tightly. This can effectively prevent the safety net 4 from coming off the limiting groove 51 during use, which would completely lose its protective function and pose a great threat to the life safety of construction workers.
[0031] like Figure 4 and Figure 5 As shown, both the first support plate 2 and the second support plate 3 have grooves 21 and mounting slots 23. The fixing block 5 of the safety net 4 near the mounting bracket 1 is fixedly installed in the groove 21, and the fixing block 5 at the other end is slidably installed in the groove 21. It is worth noting that the top of the first support plate 2 can be detachably snapped with a top cover. When it is necessary to install or adjust the safety net 4, simply open the top cover, and the groove 21 will be exposed. At this time, the fixing block 5 of the safety net 4 that has been installed and adjusted can be placed in the groove 21. After the installation of the fixing block 5 is completed, the top cover is snapped onto the first support plate 2.
[0032] like Figure 4 , Figure 5 and Figure 6 As shown, a connecting block 53 is fixedly connected to one side of the fixing block 5, and a screw 22 is rotatably disposed in the groove 21. The screw 22 passes through the fixing block 5 at the end away from the mounting bracket 1 and is threadedly connected to it. It is worth noting that the connecting block 53 is pre-installed in the groove 21. When the top cover is opened and the fixing block 5 is installed in the groove 21, the fixing block 5 and the connecting block 53 are welded together. When it is necessary to remove the fixing block 5 to adjust the safety net 4, electric welding can be used to heat and separate the fixing block 5 and the connecting block 53.
[0033] like Figure 4 and Figure 5 As shown, a second motor 24 is fixedly installed in the mounting groove 23. The output shaft of the second motor 24 is fixedly connected to one end of the screw 22. Therefore, by driving the second motor 24 to rotate the screw 22, the fixed block 5 at one end is moved closer to or further away from the other fixed block 5 according to the range of the high-altitude operation. The safety net 4 has a certain elasticity and can adaptively adjust according to the distance between the two fixed blocks 5, ensuring that the safety net 4 can tightly cover the corresponding area, providing reliable protection for construction workers working at height, preventing accidents such as falls, and ensuring the safety of construction workers' lives.
[0034] like Figure 1 , Figure 3 and Figure 4 As shown, a slider 27 is fixedly connected to one end of the first support plate 2, and a screw hole 271 is opened through the slider 27. A groove 11 is opened on one side of the mounting frame 1, and the slider 27 is slidably disposed in the groove 11. A bidirectional lead screw is rotatably disposed in the groove 11. The midpoint of the lead screw is the center of symmetry, and the thread directions on the left and right sides of the center of symmetry are opposite. The lead screw passes through the two sliders 27 and is threadedly connected to them. The two sliders 27 are symmetrically disposed on the left and right sides of the center of symmetry. A first motor 12 is fixedly disposed on the side wall of the mounting frame 1. According to the construction area, the first motor 12 is driven to rotate the lead screw, thereby causing the two sliders 27 to move closer or further away from each other, thereby adjusting the two first support plates 2 to move closer or further away from each other. When the construction area is narrow, the two first support plates 2 need to be adjusted to move closer. At this time, the safety net 4 may become loose. Therefore, the tension of the safety net 4 needs to be adjusted, that is, the length of the two ends of the safety net 4 extending out of the limiting groove 51 is adjusted, and it is fixed with positioning nails 52 to avoid the risk caused by the safety net 4 being too loose.
[0035] like Figure 1 , Figure 2 and Figure 3 As shown, the first support plate 2 has a slot 25 at its bottom, and the second support plate 3 has a connecting strip 31 fixedly connected to its top. The connecting strip 31 is slidably disposed in the slot 25, and the side wall of the first support plate 2 is threaded with several screws 26 for fixing the connecting strip 31. When the construction area is too large and the width of the safety net 4 between the two first support plates 2 is insufficient to support the construction personnel, the two second support plates 3 need to be slid outward along the slot 25, so that the safety net 4 between the two second support plates 3 moves outward accordingly and connects with the safety net 4 between the first support plates 2, thereby increasing the overall protection range of the safety net 4. After adjustment, tighten the screws 26, and the end of the screw 26 will gradually press against the connecting strip 31, thereby firmly fixing the connecting strip 31 in the slot 25, preventing the second support plate 3 from sliding during use, and ensuring the structural stability of the entire retractable high-altitude work safety net.
[0036] In practical use, the mounting bracket 1 is welded to the side wall of the wall. Depending on the construction area, the first motor 12 drives the bidirectional lead screw in the slide groove 11 to rotate, causing the two sliders 27 to move closer or further apart, thereby adjusting the two first support plates 2 to move closer or further apart. The length of the safety net 4 extending beyond the limiting groove 51 at both ends is adjusted and fixed with positioning nails 52. Then, the top cover of the first support plate 2 is opened, and the fixing block 5, with the safety net 4 already installed and adjusted, is placed in the groove 21. Specifically, the fixing block 5 of the safety net 4 near the mounting bracket 1 is fixedly placed in the groove 21. The fixing block 5 at the other end is slidably set in the groove 21, and the fixing block 5 is welded to the connecting block 53 pre-installed in the groove 21. Then the top cover is snapped onto the first support plate 2. When the construction range is too wide, the two second support plates 3 are slid outward along the slot 25, so that the safety net 4 between the two second support plates 3 moves outward and connects with the safety net 4 between the first support plates 2, thereby increasing the overall protection range of the safety net 4. After adjustment, the screws 26 on the side wall of the first support plate 2 are tightened. The end of the screws 26 gradually presses against the connecting strip 31, and the connecting strip 31 is firmly fixed in the slot 25.
[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A retractable safety net for high-altitude operations, comprising a mounting frame (1) welded to the side wall of a wall, wherein two first support plates (2) are symmetrically slidably arranged on one side of the mounting frame (1), and a second support plate (3) is slidably arranged at the bottom of the first support plates (2), characterized in that, A safety net (4) is slidably disposed between the two first support plates (2) and the second support plate (3). A fixing block (5) is fixedly disposed at each of the four corner edges of the safety net (4). The fixing block (5) is slidably disposed inside the support plate and is used to adjust the tension of the safety net (4).
2. The telescopic fall arrest safety net according to claim 1, wherein, A limiting groove (51) is provided on one side of the fixing block (5). The limiting groove (51) is U-shaped. The safety net (4) passes through the limiting groove (51) of each fixing block (5) at its four edges. A positioning groove communicating with the limiting groove (51) is provided on the fixing block (5). A positioning pin (52) is threaded in the positioning groove.
3. The telescoping aerial safety net of claim 1, wherein, The first support plate (2) and the second support plate (3) are both provided with grooves (21) and mounting grooves (23). The fixing block (5) of the safety net (4) near the mounting frame (1) is fixedly installed in the groove (21), and the fixing block (5) at the other end is slidably installed in the groove (21).
4. The telescoping aerial safety net of claim 3, wherein, A connecting block (53) is fixedly connected to one side of the fixing block (5), and a screw (22) is rotatably arranged in the groove (21). The screw (22) passes through the fixing block (5) at the end away from the mounting bracket (1) and is threadedly connected to it.
5. The telescoping aerial safety net of claim 4, wherein, A second motor (24) is fixedly installed in the mounting slot (23), and the output shaft of the second motor (24) is fixedly connected to one end of the screw (22).
6. The telescoping aerial safety net of claim 1, wherein, The first support plate (2) is fixedly connected to a slider (27) at one end, and a screw hole (271) is opened through the slider (27). A groove (11) is opened on one side of the mounting bracket (1), and the slider (27) is slidably disposed in the groove (11).
7. The telescoping aerial safety net of claim 1, wherein, The first support plate (2) has a slot (25) at the bottom, and the second support plate (3) has a connecting strip (31) fixedly connected to the top. The connecting strip (31) is slidably disposed in the slot (25), and the first support plate (2) has a number of screws (26) threaded on its side wall for fixing the connecting strip (31).