Building safety net impact resistance test device based on mechanical sensor

Abstract

The invention relates to the technical field of safety net tests, and discloses a building safety net impact resistance test device based on a mechanical sensor, which comprises an elevated frame, the elevated frame is used for installing an impact device, the top of the elevated frame is fixedly connected with a partition plate, and the upper surface of the partition plate is fixedly connected with a winch. The top end of the elevated frame is fixedly connected with a protective shell, and the top end of the elevated frame is rotatably connected with a fixed pulley I. According to the invention, the impact hammer impacts the safety net when descending, so that the quality of the safety net is tested, and the T-shaped sliding block slides and descends in the vertical sliding rail, so that the impact hammer is limited in the vertical descending process, swinging is reduced, and the test efficiency is improved; when the rotating shafts rotate relatively, rotating friction is generated between the rotating shafts and the sleeve shaft, the swing force is further reduced, the H-shaped sliding block slides left and right in the horizontal sliding rail after being stressed, the friction force is further enhanced, the swing amplitude of the impact hammer is reduced, and the testing efficiency and safety are further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of safety net testing, and specifically to a building safety net impact resistance testing device based on a mechanical sensor. Background Art

[0002] A safety net is a protective device set below the working surface during high-altitude building construction, used to prevent accidents caused by the fall of personnel or objects. A safety net must be set below any area where high-altitude work is carried out and needs to be regularly inspected and maintained. In the quality inspection of safety nets, the impact resistance performance is a key indicator to measure its protective ability. A safety net impact test device is a testing equipment specifically used to detect the impact resistance performance of safety nets. It simulates the working condition of a heavy object freely falling from a specified height to impact the safety net, so as to verify the impact resistance strength, energy absorption ability and structural integrity of the safety net under dynamic load. In the prior art, after the impact test, the impact device usually swings, which poses a hazard to the overall device and the staff.

[0003] The patent with the publication number CN212646035U discloses a safety net impact resistance test device. This patent includes shock-proof columns, a large-size safety net test frame and a small-size safety net test frame. The two transverse net-tying rods of the small-size safety net test frame are connected to the longitudinal net-tying rods on both sides through sliding connection structures arranged at the ends to achieve sliding assembly. A support rod is arranged below the transverse net-tying rods, and a strengthening rod is arranged between the two transverse net-tying rods. The impact frame stands on one side above the safety net test frame and includes an impact frame support. A winch is installed on the top of the impact frame support. The steel rope pulled by the winch cooperates with a pulley block. The impact object is hung on a self-locking release device, and the self-locking release device is hung on the steel rope. The large-size safety net net-tying operation platform is arranged around the safety net test frame, which has the characteristics of small occupied area, low cost, convenient and safe operation. Although this patent solves the above problems, there is still a problem that the impact device is prone to swing when descending and ascending, which may pose a danger to the overall device and the staff. Therefore, a building safety net impact resistance test device based on a mechanical sensor is proposed to solve the above problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a building safety net impact resistance test device based on a mechanical sensor for the deficiencies in the above-mentioned prior art.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: A building safety net impact resistance test device based on a mechanical sensor, comprising: The elevated rack is used to install the impact device. A partition is fixedly connected to the top of the elevated rack. A winch is fixedly connected to the upper surface of the partition. A protective housing is fixedly connected to the top end of the elevated rack. A first fixed pulley is rotatably connected to the top end of the elevated rack. A second fixed pulley is rotatably connected to the top end of the elevated rack. A rope is fixedly connected to the inner wall top surface of the protective housing; The protection device is arranged on the front side of the elevated rack and is used to prevent danger caused by the safety rope breaking due to excessive impact force during the test; The pulling device is arranged on the front side of the elevated rack and is used to quickly pull the safety rope deformed under pressure during the test back to its original position, facilitating multiple tests.

[0006] As a further technical solution, the elevated rack includes; A movable pulley that abuts against the bottom of the rope; An impact hammer fixedly connected to the bottom end of the rope, and the impact hammer is used to impact the safety net; A support frame fixedly connected to the front side of the elevated rack. A vertical slide rail is fixedly connected to the front side of the support frame. A T-shaped slider is slidably connected to the inner surface of the vertical slide rail.

[0007] As a further technical solution, the elevated rack further includes; A horizontal slide rail fixedly connected to the front end of the T-shaped slider; An H-shaped slider slidably connected to the inner surface of the horizontal slide rail. A sleeve shaft is fixedly connected to the front side of the H-shaped slider; A rotating shaft hinged to the rear side of the impact hammer.

[0008] As a further technical solution, the rotating shaft is hinged to the inner surface of the sleeve shaft. The rear side of the horizontal slide rail abuts against the front side of the vertical slide rail. The rope abuts against the inner surface of the first fixed pulley. The rope abuts against the inner surface of the second fixed pulley. The rope is installed at the rear side of the winch.

[0009] As a further technical solution, the protection device includes; A test frame fixedly connected to the front side of the elevated rack, and the test frame is used to place the safety net; A lifting baffle slidably connected to the surface of the test frame, and the lifting baffle is used to block the broken safety rope from popping outwards; A limiting plate fixedly connected to the inner surface of the lifting baffle; A convex plate fixedly connected to the bottom end of the test frame.

[0010] As a further technical solution, the protection device further includes; An extension rod, which is fixedly connected to both ends of the horizontal slide rail, and a pressing shaft is fixedly connected to one end of the extension rod away from the horizontal slide rail; A through groove, which is opened at the rear side of the lifting baffle; A limit card rail, which is fixedly connected to the upper surface of the test frame, and a trapezoidal card block is slidably connected to the surface of the limit card rail; A triangular guide block, which is fixedly connected to the side of the trapezoidal card block close to the impact hammer.

[0011] As a further technical solution, the limit plate is slidably connected to the surface of the test frame, an elastic telescopic rod I is arranged between the upper surface of the convex plate and the lower surface of the limit plate, the lower surface of the trapezoidal card block is slidably connected to the upper surface of the test frame, and the trapezoidal card block is clamped with the inner surface of the through groove.

[0012] As a further technical solution, the pulling device includes; A U-shaped plate, which is fixedly connected to the lower surface of the top of the test frame; A card frame, which is fixedly connected to the side of the U-shaped plate close to the elevated part, a slide plate is slidably connected to the inner surface of the card frame, and a clamping jaw is hinged to the side of the slide plate away from the U-shaped plate.

[0013] As a further technical solution, the pulling device further includes; A connecting plate, which is fixedly connected to the side of the slide plate close to the U-shaped plate; A connecting shaft, which is hinged to the front and rear sides of the bottom end of the slide plate; An inclined rod, which is hinged to the side of the connecting shaft close to the slide plate, and a chute is arranged on the inner side of the inclined rod; A convex shaft, which is fixedly connected to both sides of the inner wall of the lifting baffle; A winding rod, which is fixedly connected to the top of the test frame.

[0014] As a further technical solution, the slide plate is slidably connected to the side of the U-shaped plate close to the card frame, the connecting plate is slidably connected to the inner surface of the U-shaped plate, an elastic telescopic rod II is arranged between the upper surface of the connecting plate and the lower surface of the top of the test frame, and the convex shaft is slidably connected to the inner surface of the chute.

[0015] The present invention adopts the above technical solutions, and can bring the following beneficial effects: 1. The impact test device for the building safety net based on a mechanical sensor impacts the safety net when the impact hammer descends, thereby testing the quality of the safety net. The T-shaped slider slides down within the vertical slide rail, restricting the vertical descent of the impact hammer, reducing swing, and improving the test efficiency. When the rotating shaft rotates relative to the sleeve shaft, rotational friction is generated between them, thereby reducing the swinging force. The H-shaped slider slides left and right within the horizontal slide rail after being stressed, further enhancing the frictional force and thus reducing the swinging amplitude of the impact hammer, further improving the test efficiency and safety.

[0016] 2. For the impact test device for the building safety net based on a mechanical sensor, the lifting baffle rises upward to block the periphery of the safety net, preventing the safety net from breaking and popping out in all directions when the impact force is too large or the quality of the safety net does not meet the standard, reducing the test risk. Push the lifting baffle downward, and then insert the trapezoidal block into the through groove to fix the lifting baffle, facilitating the disassembly of the tested safety net and the installation of a new safety net, improving the usability of the device.

[0017] 3. For the impact test device for the building safety net based on a mechanical sensor, the triangular guide block moves forward under the guidance of the inclined plane, driving the trapezoidal block to slide forward on the limit card rail and pull out of the through groove, enabling the device to automatically provide protection while conducting impact tests, further improving the usability of the device.

[0018] 4. For the impact test device for the building safety net based on a mechanical sensor, the slide plate drives the clamping jaws to move downward. When the clamping jaws move downward, they pull the two ends of the safety net downward, tightening the safety net and preventing the safety net from loosening during impact, which may lead to inaccurate testing. One end of the connecting shaft hinged to the slide plate moves downward, pulling the slide plate and the clamping jaws downward to tighten the safety net, improving the test effect.

[0019] 5. For the impact test device for the building safety net based on a mechanical sensor, after the lifting baffle moves downward and resets, the pulling force of the second elastic telescopic rod pulls the connecting plate upward, and the connecting plate then drives the slide plate and the clamping jaws to move upward and reset, facilitating the opening of the clamping jaws to disassemble the safety net, improving the usability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall three-dimensional structure schematic diagram of the present invention; Figure 2 is the front-side three-dimensional semi-sectional structure schematic diagram of the protective shell of the present invention; Figure 3 is the present invention Figure 2 the enlarged structure schematic diagram of A in; Figure 4 is the front-side three-dimensional semi-sectional structure schematic diagram of the protection device of the present invention; Figure 5 is the present inventionFigure 4 Schematic enlarged structure diagram of B in Figure 6 Schematic front-side three-dimensional half-section structure diagram of the pulling device of the present invention; Figure 7 For the present invention Figure 6 Schematic enlarged structure diagram of C in Figure 8 For the present invention Figure 6 Schematic enlarged structure diagram of D in

[0021] In the figure: 1, elevated rack; 2, partition board; 3, winch; 4, protective shell; 5, fixed pulley 1; 6, fixed pulley 2; 7, rope; 8, protective device; 9, pulling device; 10, movable pulley; 11, impact hammer; 12, support frame; 13, vertical sliding rail; 14, T-shaped slider; 15, horizontal sliding rail; 16, H-shaped slider; 17, sleeve shaft; 18, rotating shaft; 81, test frame; 82, lifting baffle; 83, limiting plate; 84, convex plate; 85, extension rod; 86, pressing shaft; 87, through groove; 88, trapezoidal clamping block; 89, limiting clamping rail; 810, triangular guiding block; 91, U-shaped plate; 92, clamping frame; 93, sliding plate; 94, clamping jaw; 95, connecting plate; 96, connecting shaft; 97, inclined rod; 98, sliding groove; 99, convex shaft; 910, winding rod. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-8, an embodiment of the present invention is: a mechanical sensor-based impact resistance test device for building safety nets, including an elevated rack 1 for installing an impact device. A partition 2 is fixedly connected to the top of the elevated rack 1. A winch 3 is fixedly connected to the upper surface of the partition 2. A protective housing 4 is fixedly connected to the top end of the elevated rack 1. A first fixed pulley 5 is rotatably connected to the top end of the elevated rack 1. A second fixed pulley 6 is rotatably connected to the top end of the elevated rack 1. A rope 7 is fixedly connected to the inner wall top surface of the protective housing 4. A protective device 8 is arranged on the front side of the elevated rack 1, which is used to prevent the safety rope from breaking due to excessive impact force during the test and causing danger. A pulling device 9 is arranged on the front side of the elevated rack 1, which is used to quickly pull the safety rope deformed under pressure during the test back to its original position, facilitating multiple tests. When the impact hammer 11 descends, it impacts the safety net to test the quality of the safety net. The T-shaped slider 14 slides down within the vertical slide rail 13, restricting the impact hammer 11 during its vertical descent, reducing swing, and improving the test efficiency. The elevated rack 1 includes a movable pulley 10, which abuts against the bottom of the rope 7. The impact hammer 11 is fixedly connected to the bottom end of the rope 7 and is used to impact the safety net. A support frame 12 is fixedly connected to the front side of the elevated rack 1. A vertical slide rail 13 is fixedly connected to the front side of the support frame 12. The inner surface of the vertical slide rail 13 is slidably connected to a T-shaped slider 14. The elevated rack 1 further includes a horizontal slide rail 15, which is fixedly connected to the front end of the T-shaped slider 14. An H-shaped slider 16 is slidably connected to the inner surface of the horizontal slide rail 15. A sleeve shaft 17 is fixedly connected to the front side of the H-shaped slider 16. A rotating shaft 18 is hinged to the rear side of the impact hammer 11, and the rotating shaft 18 is hinged to the inner surface of the sleeve shaft 17. The rear side of the horizontal slide rail 15 abuts against the front side of the vertical slide rail 13. The rope 7 abuts against the inner surface of the first fixed pulley 5 and the inner surface of the second fixed pulley 6. The rope 7 is installed behind the winch 3. When the rotating shaft 18 rotates relative to the sleeve shaft 17, rotational friction is generated between them, thereby reducing the force of swing. The H-shaped slider 16 slides left and right within the horizontal slide rail 15 under force, further enhancing the friction force to reduce the swing amplitude of the impact hammer 11, further improving the test efficiency and safety.

[0024] Working principle: Start the winch 3. The winch 3 raises and lowers the movable pulley 10 and the impact hammer 11 by winding and unwinding the rope 7. When the impact hammer 11 descends, it impacts the safety net, thereby testing the quality of the safety net. During the descent of the impact hammer 11, the sleeve shaft 17 and the H-shaped slider 16 are driven to descend by the rotating shaft 18. The H-shaped slider 16 then drives the horizontal slide rail 15 and the T-shaped slider 14 to slide and descend within the vertical slide rail 13, restricting the impact hammer 11 during its vertical descent, reducing swing, and improving the testing efficiency. When the impact hammer 11 swings, the rotating shaft 18 rotates relative to the impact hammer 11. The impact hammer 11 conducts the swinging force to the sleeve shaft 17 and the H-shaped slider 16 through the rotating shaft 18. When the rotating shaft 18 rotates relative to the sleeve shaft 17, rotational friction is generated, thereby reducing the swinging force. The H-shaped slider 16 slides left and right within the horizontal slide rail 15 after being stressed, further enhancing the frictional force and thus reducing the swinging amplitude of the impact hammer 11, further improving the testing efficiency and safety.

[0025] Please refer to Figures 1-8 , on the basis of the above embodiment, in another embodiment of the present invention, the protection device 8 includes a test frame 81. The test frame 81 is fixedly connected to the front side of the elevated rack 1. The test frame 81 is used to place the safety net. The lifting baffle 82 is slidably connected to the surface of the test frame 81. The lifting baffle 82 is used to block the broken safety rope from popping outwards. The limiting plate 83 is fixedly connected to the inner surface of the lifting baffle 82. The convex plate 84 is fixedly connected to the bottom end of the test frame 81. The lifting baffle 82 rises to block the periphery of the safety net, preventing the safety net from popping out in all directions when the impact force is too large or the quality of the safety net does not meet the standard, reducing the test danger. Push the lifting baffle 82 downwards, and then insert the trapezoidal block 88 into the through slot 87 to fix the lifting baffle 82, facilitating the disassembly of the tested safety net and the installation of a new safety net, improving the convenience of use of the device. The protection device 8 further includes an extension rod 85. The extension rod 85 is fixedly connected to both ends of the horizontal slide rail 15. One end of the extension rod 85 away from the horizontal slide rail 15 is fixedly connected with a pressing shaft 86. The through slot 87 is opened at the rear side of the lifting baffle 82. The limiting rail 89 is fixedly connected to the upper surface of the test frame 81. The trapezoidal block 88 is slidably connected to the surface of the limiting rail 89. The triangular guide block 810 is fixedly connected to the side of the trapezoidal block 88 close to the impact hammer 11. The limiting plate 83 is slidably connected to the surface of the test frame 81. An elastic telescopic rod one is provided between the upper surface of the convex plate 84 and the lower surface of the limiting plate 83. The lower surface of the trapezoidal block 88 is slidably connected to the upper surface of the test frame 81. The trapezoidal block 88 is clamped with the inner surface of the through slot 87. The triangular guide block 810 moves forward under the guidance of the inclined surface, thereby driving the trapezoidal block 88 to slide forward on the limiting rail 89 and withdraw from the through slot 87, enabling the device to automatically provide protection while performing the impact test, further improving the convenience of use of the device.

[0026] Working principle: Fix the safety net on the test frame 81. Before conducting an impact test on the safety net, push the trapezoidal block 88 forward so that the trapezoidal block 88 is withdrawn from the through groove 87. After the lifting baffle 82 loses the limit of the trapezoidal block 88, it rises under the influence of the elastic telescopic rod between the convex plate 84 and the limit plate 83, thus blocking the periphery of the safety net. This can prevent the safety net from breaking and popping out in all directions when the impact force is too large or the quality of the safety net does not meet the standard, reducing the test danger. When the safety net test is completed, push the lifting baffle 82 downward, and then insert the trapezoidal block 88 into the through groove 87 to fix the lifting baffle 82, which facilitates the disassembly of the tested safety net and the installation of a new safety net, improving the convenience of using the device. When the horizontal slide rail 15 descends, it drives the extension rod 85 to descend. The extension rod 85 drives the pressing shaft 86 to descend. After the circumferential surface of the pressing shaft 86 contacts the inclined surface of the triangular guiding block 810, the triangular guiding block 810 is guided by the inclined surface and moves forward, thereby driving the trapezoidal block 88 to slide forward on the limit card rail 89 and withdraw from the through groove 87, enabling the device to automatically provide protection during the impact test and further improving the convenience of using the device.

[0027] Please refer to Figures 1-8 , on the basis of the above embodiment, in another embodiment of the present invention, the pulling device 9 includes a U-shaped plate 91. The U-shaped plate 91 is fixedly connected to the lower surface of the top of the test frame 81. A clamping frame 92 is fixedly connected to one side of the U-shaped plate 91 close to the elevated rack 1. A sliding plate 93 is slidably connected to the inner surface of the clamping frame 92. A clamping jaw 94 is hinged to the side of the sliding plate 93 away from the U-shaped plate 91. The sliding plate 93 drives the clamping jaw 94 to move downward. When the clamping jaw 94 moves downward, it pulls the two ends of the safety net downward, thereby tightening the safety net and preventing the safety net from loosening during the impact test, which may lead to inaccurate testing. One end of the connecting shaft 96 hinged to the sliding plate 93 faces downward, thereby pulling the sliding plate 93 and the clamping jaw 94 downward to tighten the safety net, improving the test effect. The pulling device 9 further includes a connecting plate 95. The connecting plate 95 is fixedly connected to the side of the sliding plate 93 close to the U-shaped plate 91. The connecting shaft 96 is hinged to the front and rear sides of the bottom end of the sliding plate 93. An inclined rod 97 is hinged to the side of the connecting shaft 96 close to the sliding plate 93. A chute 98 is provided on the inner side of the inclined rod 97. A convex shaft 99 is fixedly connected to both sides of the inner wall of the lifting baffle 82. A winding rod 910 is fixedly connected to the top of the test frame 81. The sliding plate 93 and the U-shaped plate 91 are slidably connected to the side close to the clamping frame 92. The connecting plate 95 and the inner surface of the U-shaped plate 91 are slidably connected. An elastic telescopic rod two is provided between the upper surface of the connecting plate 95 and the lower surface of the top of the test frame 81. The convex shaft 99 and the inner surface of the chute 98 are slidably connected. After the lifting baffle 82 moves downward and resets, the pulling force of the elastic telescopic rod two pulls the connecting plate 95 upward. The connecting plate 95 then drives the sliding plate 93 and the clamping jaw 94 to move upward and reset, facilitating the opening of the clamping jaw 94 to disassemble the safety net and improving the convenience of using the device.

[0028] Working principle: After inserting both sides of the safety net into the gap between the winding rod 910 and the test frame 81, the two ends of the safety net are clamped by the clamping jaws 94. When the impact hammer 11 impacts the safety net, the sliding plate 93 is pulled downward. The sliding plate 93 is limited by the U-shaped plate 91 and the clamping frame 92 and thus moves vertically downward. The sliding plate 93 drives the clamping jaws 94 to move downward. When the clamping jaws 94 move downward, they pull the two ends of the safety net downward, so as to tighten the safety net and avoid inaccurate testing caused by loosening of the safety net when it is impacted. When the lifting baffle 82 rises, it drives the convex shaft 99 to slide upward in the chute 98. When the convex shaft 99 slides to the top of the chute 98, the inclined rod 97 is affected by the convex shaft 99 and thus rotates along its hinge point with the connecting shaft 96. At this time, the convex shaft 99 can pull the connecting shaft 96 to rotate along its hinge point with the sliding plate 93 through the inclined rod 97. After the connecting shaft 96 rotates and tilts, the middle part thereof abuts against the bottom end of the U-shaped plate 91 to form a lever. At this time, the end of the connecting shaft 96 hinged with the sliding plate 93 is downward, so as to pull the sliding plate 93 and the clamping jaws 94 to move downward to tighten the safety net, improving the test effect. After the lifting baffle 82 moves downward and resets, the pulling force of the second elastic telescopic rod pulls the connecting plate 95 upward, and the connecting plate 95 then drives the sliding plate 93 and the clamping jaws 94 to move upward and reset, facilitating the opening of the clamping jaws 94 to disassemble the safety net and improving the use convenience of the device.

[0029] The present invention provides an impact resistance test device for a building safety net based on a mechanical sensor. There are many methods and ways to specifically implement this technical solution. The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention. Each component not clearly defined in this embodiment can be implemented by using the prior art.

Claims

1. An impact resistance test device for a building safety net based on a mechanical sensor, characterized in that, Including: An elevated rack (1) for installing an impact device. A partition (2) is fixedly connected to the top of the elevated rack (1). A winch (3) is fixedly connected to the upper surface of the partition (2). A protective shell (4) is fixedly connected to the top end of the elevated rack (1). A first fixed pulley (5) is rotatably connected to the top end of the elevated rack (1). A second fixed pulley (6) is rotatably connected to the top end of the elevated rack (1). A rope (7) is fixedly connected to the inner top surface of the protective shell (4); A protective device (8) is arranged on the front side of the elevated rack (1) and is used to prevent danger caused by the safety rope breaking due to excessive impact force during the test; A pulling device (9) is arranged on the front side of the elevated rack (1) and is used to quickly pull the safety rope deformed under pressure during the test back to its original position for multiple tests.

2. The impact resistance test device for a building safety net based on a mechanical sensor according to claim 1, characterized in that: The elevated rack (1) includes; A movable pulley (10) abuts against the bottom of the rope (7); An impact hammer (11) is fixedly connected to the bottom end of the rope (7) and is used to impact the safety net; A support frame (12) is fixedly connected to the front side of the elevated rack (1). A vertical slide rail (13) is fixedly connected to the front side of the support frame (12). A T-shaped slider (14) is slidably connected to the inner surface of the vertical slide rail (13).

3. The impact resistance test device for building safety nets based on mechanical sensors according to claim 2, characterized in that: The elevated rack (1) further includes; A horizontal slide rail (15) is fixedly connected to the front end of the T-shaped slider (14); An H-shaped slider (16) is slidably connected to the inner surface of the horizontal slide rail (15). A sleeve shaft (17) is fixedly connected to the front side of the H-shaped slider (16); A rotating shaft (18) is hinged to the rear side of the impact hammer (11).

4. The impact resistance test device for building safety nets based on mechanical sensors according to claim 3, wherein: The rotating shaft (18) is hinged to the inner surface of the sleeve shaft (17). The rear side of the horizontal slide rail (15) abuts against the front side of the vertical slide rail (13). The rope (7) abuts against the inner surface of the first fixed pulley (5). The rope (7) abuts against the inner surface of the second fixed pulley (6). The rope (7) is installed at the rear side of the winch (3).

5. The impact resistance test device for a building safety net based on a mechanical sensor according to claim 4, wherein: The protective device (8) includes; A test frame (81) is fixedly connected to the front side of the elevated rack (1) and is used to place the safety net; A lifting baffle (82) is slidably connected to the surface of the test frame (81) and is used to block the broken safety rope from popping outwards; A limiting plate (83) is fixedly connected to the inner surface of the lifting baffle (82); A convex plate (84) is fixedly connected to the bottom end of the test frame (81).

6. The impact resistance test device for a building safety net based on a mechanical sensor according to claim 5, characterized in that: The protective device (8) further includes; Extension rods (85) are fixedly connected to both ends of the horizontal slide rail (15). A pressing shaft (86) is fixedly connected to the end of the extension rod (85) far from the horizontal slide rail (15); A through groove (87) is provided at the rear side of the lifting baffle (82); A limit clamping rail (89) is fixedly connected to the upper surface of the test frame (81), and a trapezoidal clamping block (88) is slidably connected to the surface of the limit clamping rail (89); A triangular guiding block (810) is fixedly connected to the side of the trapezoidal clamping block (88) close to the impact hammer (11).

7. The impact resistance test device for a building safety net based on a mechanical sensor according to claim 6, characterized in that: The limit plate (83) is slidably connected to the surface of the test frame (81), and a first elastic telescopic rod is provided between the upper surface of the convex plate (84) and the lower surface of the limit plate (83). The lower surface of the trapezoidal clamping block (88) is slidably connected to the upper surface of the test frame (81), and the trapezoidal clamping block (88) is clamped to the inner surface of the through groove (87).

8. The impact resistance test device for a building safety net based on a mechanical sensor according to claim 7, characterized in that: The pulling device (9) includes; A U-shaped plate (91) is fixedly connected to the lower surface of the top of the test frame (81); A clamping frame (92) is fixedly connected to the side of the U-shaped plate (91) close to the elevated rack (1). A sliding plate (93) is slidably connected to the inner surface of the clamping frame (92), and a clamping jaw (94) is hinged to the side of the sliding plate (93) away from the U-shaped plate (91).

9. The impact resistance test device for a building safety net based on a mechanical sensor according to claim 8, characterized in that: The pulling device (9) further includes; A connecting plate (95) is fixedly connected to the side of the sliding plate (93) close to the U-shaped plate (91); A connecting shaft (96) is hinged to the front and rear sides of the bottom end of the sliding plate (93); An inclined rod (97) is hinged to the side of the connecting shaft (96) close to the sliding plate (93), and a chute (98) is provided inside the inclined rod (97); A convex shaft (99) is fixedly connected to both sides of the inner wall of the lifting baffle (82); A winding rod (910) is fixedly connected to the top of the test frame (81).

10. A shock resistance test device for a building safety net based on a mechanical sensor according to claim 9, characterized in that: The sliding plate (93) is slidably connected to the side of the U-shaped plate (91) close to the clamping frame (92), the connecting plate (95) is slidably connected to the inner surface of the U-shaped plate (91), and a second elastic telescopic rod is provided between the upper surface of the connecting plate (95) and the lower surface of the top of the test frame (81). The convex shaft (99) is slidably connected to the inner surface of the chute (98).

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