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] This invention relates to the field of safety net testing technology, specifically to a test device for the impact resistance of building safety nets based on mechanical sensors. Background Technology

[0002] Safety nets are protective devices installed below the work surface during high-altitude construction to prevent accidents caused by falling personnel or objects. Safety nets must be installed below all high-altitude work areas and must be inspected and maintained regularly. In the quality testing of safety nets, impact resistance is a key indicator for measuring their protective ability. Safety net impact testing equipment is a test device specifically used to test the impact resistance of safety nets. It verifies the impact strength, energy absorption capacity, and structural integrity of safety nets under dynamic loads by simulating the condition of a heavy object falling freely from a specified height and impacting the safety net. In existing technologies, after the impact test, the impact device usually swings, which can cause harm to the overall equipment and workers.

[0003] Patent CN212646035U discloses a safety net impact resistance testing device. This patent includes an anti-vibration column, a large-size safety net testing frame, and a small-size safety net testing frame. The two transverse tie rods of the small-size safety net testing frame are connected to the longitudinal tie rods on both sides via a sliding connection structure at the ends, achieving a sliding assembly. Support rods are installed below the transverse tie rods, and reinforcing rods are installed between the two transverse tie rods. An impact frame is erected on one side above the safety net testing frame, including an impact frame support. A winch is installed on top of the impact frame support, and the steel rope pulled by the winch cooperates with a pulley system. The impact object is hung on a self-locking release device, which is also hung on the steel rope. A large-size safety net tie-up operating platform is located around the safety net testing frame. This device features small footprint, low cost, convenient operation, and safety. Although this patent solves the aforementioned problems, it still has the problem that the impact device is prone to swaying during descent and ascent, which could endanger the entire device and personnel. Therefore, a mechanical sensor-based building safety net impact resistance testing device is proposed to solve the aforementioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a test device for the impact resistance of building safety nets based on mechanical sensors, which addresses the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a test device for the impact resistance of building safety nets based on mechanical sensors, comprising: An elevated structure is used to install an impact device. A partition is fixedly connected to the top of the elevated structure, and a winch is fixedly connected to the upper surface of the partition. A protective shell is fixedly connected to the top of the elevated structure, and a fixed pulley is rotatably connected to the top of the elevated structure. A fixed pulley is rotatably connected to the top of the elevated structure, and a rope is fixedly connected to the top surface of the inner wall of the protective shell. A protective device is installed on the front side of the elevated structure. The protective device is used to prevent the safety rope from breaking due to excessive impact force during the test, which would cause danger. A pulling device is installed on the front side of the elevated structure. The pulling device is used to quickly pull back the safety rope that has been deformed by pressure during the test, so as to facilitate multiple tests.

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

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

[0008] As a further technical solution, the inner surfaces of the rotating shaft and the sleeve shaft are hinged, the rear side of the horizontal slide rail and the front side of the vertical slide rail abut against each other, the rope abuts against the inner surface of the first fixed pulley, the rope abuts against the inner surface of the second fixed pulley, and the rope is installed on the rear side of the winch.

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

[0010] As a further technical solution, the protective device also includes; An extension rod is fixedly connected to both ends of a horizontal slide rail, and a pressure shaft is fixedly connected to the end of the extension rod away from the horizontal slide rail. A through slot is provided on the rear side of the lifting baffle; A limiting rail is fixedly connected to the upper surface of the test frame, and a trapezoidal locking block is slidably connected to the surface of the limiting rail; A triangular guide block is fixedly connected to the trapezoidal block on the side near the impact hammer.

[0011] As a further technical solution, the limiting plate and the test frame surface are slidably connected, an elastic telescopic rod is provided between the upper surface of the convex plate and the lower surface of the limiting plate, the lower surface of the trapezoidal block is slidably connected to the upper surface of the test frame, and the trapezoidal block is engaged 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 top surface of the test frame; A card frame is fixedly connected to the side of the U-shaped plate near the overhead structure. A sliding plate is slidably connected to the inner surface of the card frame, and a gripper is hinged to the side of the sliding plate away from the U-shaped plate.

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

[0014] As a further technical solution, the slide plate and the U-shaped plate are slidably connected on the side near the card frame, the connecting plate and the inner surface of the U-shaped plate are slidably connected, an elastic telescopic rod is provided between the upper surface of the connecting plate and the lower surface of the top of the test frame, and the convex shaft and the inner surface of the slide groove are slidably connected.

[0015] The present invention, by adopting the above technical solution, can bring the following beneficial effects: 1. This impact resistance testing device for building safety nets based on mechanical sensors uses an impact hammer to impact the safety net as it descends, thereby testing the quality of the safety net. The T-shaped slider slides down within the vertical slide rail, which restricts the vertical descent of the impact hammer, reducing sway and improving testing efficiency. When the rotating shaft rotates relative to the sleeve shaft, rotational friction is generated between them, which further reduces the swaying force. The H-shaped slider slides left and right within the horizontal slide rail after being subjected to force, further increasing the friction and reducing the swaying amplitude of the impact hammer, thus further improving testing efficiency and safety.

[0016] 2. This impact resistance testing device for building safety nets based on mechanical sensors features a lifting baffle that rises to block the safety net from all sides, preventing it from breaking and popping out in all directions due to excessive impact or substandard quality. This reduces the risk of the test. The lifting baffle is then pushed down, and trapezoidal blocks are inserted into the through slots to fix the baffle in place. This facilitates the disassembly of the tested safety net and the installation of a new one, improving the ease of use of the device.

[0017] 3. The impact resistance testing device for building safety nets based on mechanical sensors has a triangular guide block that moves forward under the guidance of an inclined plane. This causes the trapezoidal block to slide forward on the limit rail and be pulled out of the through slot, enabling the device to automatically provide protection while conducting impact testing, further improving the ease of use of the device.

[0018] 4. This impact resistance testing device for building safety nets based on mechanical sensors uses a sliding plate to move the grippers downwards. When the grippers move downwards, they pull the two ends of the safety net downwards, thus tightening the safety net and preventing it from loosening when impacted, which would lead to inaccurate testing. The end of the connecting shaft that is hinged to the sliding plate moves downwards, thereby pulling the sliding plate and grippers downwards to tighten the safety net, improving the test results.

[0019] 5. In this impact resistance testing device for building safety nets based on mechanical sensors, after the lifting baffle moves downward and resets, the tension of the elastic telescopic rod II pulls the connecting plate upward, and the connecting plate then drives the sliding plate and the gripper to move upward and reset, which facilitates opening the gripper to disassemble the safety net and improves the ease of use of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional half-sectional view of the front side of the protective shell of the present invention; Figure 3 For the present invention Figure 2 A magnified structural diagram of A in the middle; Figure 4 This is a three-dimensional half-sectional view of the front side of the protective device of the present invention; Figure 5 For the present invention Figure 4 A magnified structural diagram of B in the diagram; Figure 6 This is a three-dimensional half-sectional view of the front side of the pulling device of the present invention; Figure 7 For the present invention Figure 6 A magnified structural diagram of C; Figure 8 For the present invention Figure 6 A magnified structural diagram of D in the diagram.

[0021] In the diagram: 1. Elevated frame; 2. Partition plate; 3. Winch; 4. Protective shell; 5. Fixed pulley one; 6. Fixed pulley two; 7. Rope; 8. Protective device; 9. Pulling device; 10. Movable pulley; 11. Impact hammer; 12. Support frame; 13. Vertical slide rail; 14. T-shaped slider; 15. Horizontal slide 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. Pressure shaft; 87. Through groove; 88. Trapezoidal clamp; 89. Limiting clamp rail; 810. Triangular guide block; 91. U-shaped plate; 92. Clamping frame; 93. Slide plate; 94. Gripper; 95. Connecting plate; 96. Connecting shaft; 97. Diagonal bar; 98. Slide groove; 99. Convex shaft; 910. Rewinding rod. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-8One embodiment of the present invention is: an impact resistance testing device for building safety nets based on mechanical sensors, comprising an elevated frame 1 for mounting an impact device, a partition 2 fixedly connected to the top of the elevated frame 1, a winch 3 fixedly connected to the upper surface of the partition 2, a protective shell 4 fixedly connected to the top of the elevated frame 1, a first fixed pulley 5 and a second fixed pulley 6 rotatably connected to the top of the elevated frame 1, a rope 7 fixedly connected to the top surface of the inner wall of the protective shell 4, and a protective device 8 disposed on the front side of the elevated frame 1 to prevent the test... Excessive impact force during testing could cause the safety rope to break, creating a hazard. A tensioning device 9 is installed at the front of the elevated structure 1. This device quickly pulls back the deformed safety rope from the test, facilitating multiple tests. The impact hammer 11 descends to impact the safety net, thus testing its quality. The T-shaped slider 14 slides down within the vertical slide rail 13, restricting the vertical descent of the impact hammer 11, reducing sway, and improving testing efficiency. The elevated structure 1 includes a movable pulley 10, which abuts against the bottom of the rope 7. The impact hammer 1... 1 and rope 7 are fixedly connected at their bottom ends. The impact hammer 11 is used to impact the safety net. The support frame 12 is fixedly connected to the front side of the elevated structure 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. The elevated structure 1 also includes a horizontal slide rail 15. The 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. The inner surfaces of the rotating shaft 18 and the sleeve shaft 17 are hinged together. The rear side of the horizontal slide rail 15 and the front side of the vertical slide rail 13 abut together. The inner surface of the rope 7 and the first fixed pulley 5 abut together, and the inner surface of the second fixed pulley 6 abut together. The rope 7 is installed on the rear side of the winch 3. When the rotating shaft 18 rotates relative to the sleeve shaft 17, rotational friction is generated between them, thereby reducing the swing force. After being subjected to force, the H-shaped slider 16 slides left and right in the horizontal slide rail 15, further increasing the friction force and reducing the swing amplitude of the impact hammer 11, thereby further improving the testing efficiency and safety.

[0024] Working principle: When the winch 3 is started, it 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 to test its quality. During the descent of the impact hammer 11, the rotating shaft 18 drives the sleeve shaft 17 and the H-shaped slider 16 to descend. 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. This restricts the vertical descent of the impact hammer 11, reduces swaying, and improves testing efficiency. When the impact hammer 11 sways, the rotating shaft 18 rotates relative to the impact hammer 11. The impact hammer 11 transmits the swaying 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 between it and the sleeve shaft 17, which reduces the swaying force. The H-shaped slider 16, after being subjected to force, slides left and right within the horizontal slide rail 15, further increasing the friction and reducing the swaying amplitude of the impact hammer 11, thus further improving testing efficiency and safety.

[0025] Please see Figures 1-8 Based on the above embodiments, in another embodiment of the present invention, the protective device 8 includes a test frame 81, which is fixedly connected to the front side of the elevated frame 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 prevent the broken safety rope from popping outward. A limiting plate 83 is fixedly connected to the inner surface of the lifting baffle 82, and a protruding plate 84 is fixedly connected to the bottom end of the test frame 81. The lifting baffle 82 rises upward to block the safety net around its perimeter, preventing the safety net from breaking and popping outward when the impact force is too great or the safety net is of substandard quality, thus reducing the risk of the test. Pushing the lifting baffle 82 downward and inserting the trapezoidal block 88 into the through slot 87 fixes the lifting baffle 82, facilitating the disassembly of the safety net after the test and the installation of a new safety net, thus improving the ease of use of the device. The protective device 8 also includes an extension rod 85, which is fixedly connected to the water... At both ends of the smooth rail 15, the end of the extension rod 85 away from the horizontal slide rail 15 is fixedly connected to the pressure shaft 86. The through groove 87 is opened on 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 surface of the limiting rail 89 is slidably connected to the trapezoidal block 88. The triangular guide block 810 is fixedly connected to the side of the trapezoidal block 88 near the impact hammer 11. The limiting plate 83 is slidably connected to the surface of the test frame 81. An elastic telescopic rod is set 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 engaged with the inner surface of the through groove 87. The triangular guide block 810 is guided by the inclined plane and moves forward, thereby driving the trapezoidal block 88 to slide forward on the limiting rail 89 and be pulled out of the through groove 87. This allows the device to automatically protect itself while conducting impact testing, further improving the ease of use of the device.

[0026] Working principle: The safety net is fixed to the test frame 81. Before the impact test, the trapezoidal block 88 is pushed forward, causing it to disengage from the through slot 87. After the lifting baffle 82 loses its restraint from the trapezoidal block 88, it rises due to the elastic force of the elastic telescopic rod between the convex plate 84 and the limiting plate 83, thus blocking the safety net from breaking and ejecting in all directions if the impact force is too great or the safety net quality is substandard, reducing the test risk. After the safety net test is completed, the lifting baffle 82 is pushed downward, and the trapezoidal block 88 is inserted back into the through slot 87, allowing... The lifting baffle 82 is fixed, which facilitates the disassembly of the safety net after the test and the installation of the new safety net, improving the ease of use of the device. When the horizontal slide rail 15 descends, it drives the extension rod 85 to descend, and the extension rod 85 drives the pressure shaft 86 to descend. After the circumferential surface of the pressure shaft 86 contacts the inclined surface of the triangular guide block 810, the triangular guide block 810 is guided by the inclined surface and moves forward, thereby driving the trapezoidal block 88 to slide forward on the limit rail 89 and be pulled out of the through groove 87. This allows the device to automatically provide protection while conducting impact tests, further improving the ease of use of the device.

[0027] Please see Figures 1-8 Based on the above embodiments, in another embodiment of the present invention, the pulling device 9 includes a U-shaped plate 91, which is fixedly connected to the lower top surface of the test frame 81. A clamping frame 92 is fixedly connected to the side of the U-shaped plate 91 near the elevated frame 1. A sliding plate 93 is slidably connected to the inner surface of the clamping frame 92. A clamping claw 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 claw 94 to move downward. When the clamping claw 94 moves downward, it pulls both ends of the safety net downward, thereby tightening the safety net and preventing it from loosening when impacted, which would lead to inaccurate testing. The connecting shaft 96 is hinged to the sliding plate 93 at one end downward, thereby pulling the sliding plate 93 and the clamping claw 94 downward to tighten the safety net, improving the test effect. The pulling device 9 also includes a connecting plate 95, which is fixedly connected to the sliding plate 93 near the U-shaped plate 91. On one side, the connecting shaft 96 is hinged to the front and rear sides of the bottom end of the slide plate 93, and the inclined rod 97 is hinged to the side of the connecting shaft 96 near the slide plate 93. The inner side of the inclined rod 97 is provided with a sliding groove 98. The convex shaft 99 is fixedly connected to both sides of the inner wall of the lifting baffle 82. The winding rod 910 is fixedly connected to the top of the test frame 81. The slide plate 93 and the U-shaped plate 91 are slidably connected to the side of 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 2 is provided between the upper surface of the connecting plate 95 and the lower top surface of the test frame 81. The convex shaft 99 and the inner surface of the sliding groove 98 are slidably connected. After the lifting baffle 82 moves down to reset, the pulling force of the elastic telescopic rod 2 pulls the connecting plate 95 up. The connecting plate 95 then drives the slide plate 93 and the gripper 94 to move up to reset, which facilitates the opening of the gripper 94 to remove the safety net and improves the ease of use of 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 grippers 94. When the impact hammer 11 impacts the safety net, it pulls the slide plate 93 downward. The slide plate 93 is limited by the U-shaped plate 91 and the clamping frame 92, thus moving vertically downward. The slide plate 93 drives the grippers 94 to move downward. When the grippers 94 move downward, they pull the two ends of the safety net downward, thereby tightening the safety net and preventing it from loosening when impacted, which would lead to inaccurate testing. When the lifting baffle 82 rises, it drives the convex shaft 99 to slide upward in the slide groove 98. When the convex shaft 99 slides to the top of the slide groove 98, the inclined rod 97 is subjected to the force of the convex shaft 910. The convex shaft 99 rotates along the hinge point with the connecting shaft 96, and the convex shaft 99 can pull the connecting shaft 96 to rotate along the hinge point with the sliding plate 93 through the inclined rod 97. After the connecting shaft 96 rotates and tilts, its middle part abuts against the bottom end of the U-shaped plate 91, forming a lever. At this time, the end of the connecting shaft 96 that is hinged to the sliding plate 93 is downward, thereby pulling the sliding plate 93 and the gripper 94 downward to tighten the safety net, which improves the test effect. After the lifting baffle 82 moves downward and resets, the pulling force of the elastic telescopic rod 2 pulls the connecting plate 95 upward. The connecting plate 95 then drives the sliding plate 93 and the gripper 94 to move upward and reset, which makes it easier to open the gripper 94 to remove the safety net and improves the ease of use of the device.

[0029] This invention provides an impact resistance testing device for building safety nets based on mechanical sensors. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. A test device for impact resistance of building safety nets based on mechanical sensors, characterized in that, include: An elevated structure (1) is used to install an impact device. A partition (2) is fixedly connected to the top of the elevated structure (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 of the elevated structure (1). A fixed pulley one (5) is rotatably connected to the top of the elevated structure (1). A fixed pulley two (6) is rotatably connected to the top of the elevated structure (1). A rope (7) is fixedly connected to the top surface of the inner wall of the protective shell (4). Protective device (8), the protective device (8) is installed on the front side of the elevated structure (1), the protective device (8) is used to prevent the safety rope from breaking due to excessive impact force during the test and causing danger; Pulling device (9), the pulling device (9) is set on the front side of the elevated structure (1), the pulling device (9) is used to quickly pull back the safety rope that is deformed by pressure during the test, so as to facilitate multiple tests; The elevated structure (1) includes; A movable pulley (10) abuts against the bottom of the rope (7); Impact hammer (11), the impact hammer (11) and the bottom end of the rope (7) are fixedly connected, the impact hammer (11) is used to impact the safety net; Support frame (12), the support frame (12) is fixedly connected to the front side of the elevated frame (1), the front side of the support frame (12) is fixedly connected to a vertical slide rail (13), and a T-shaped slider (14) is slidably connected to the inner surface of the vertical slide rail (13). The elevated structure (1) also includes; A horizontal slide rail (15) is fixedly connected to the front end of a T-shaped slider (14); H-shaped slider (16), which is slidably connected to the inner surface of horizontal slide rail (15), and 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); The protective device (8) includes; Test frame (81), the test frame (81) is fixedly connected to the front side of the elevated structure (1), the test frame (81) 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 prevent the broken safety rope from popping outward. A limiting plate (83) is fixedly connected to the inner surface of the lifting baffle (82); A protruding plate (84) is fixedly connected to the bottom end of the test frame (81); The pulling device (9) includes; U-shaped plate (91), said U-shaped plate (91) is fixedly connected to the lower top surface of the test frame (81); The card frame (92) is fixedly connected to the side of the U-shaped plate (91) near the overhead frame (1). The inner surface of the card frame (92) is slidably connected to a slide plate (93). The side of the slide plate (93) away from the U-shaped plate (91) is hinged with a claw (94).

2. The impact resistance testing device for building safety nets based on mechanical sensors according to claim 1, characterized in that: The inner surfaces of the rotating shaft (18) and the sleeve shaft (17) are hinged, the rear side of the horizontal slide rail (15) and the front side of the vertical slide rail (13) abut against each other, the inner surface of the rope (7) and the first fixed pulley (5) abut against each other, the inner surface of the rope (7) and the second fixed pulley (6) abut against each other, and the rope (7) is installed on the rear side of the winch (3).

3. The impact resistance testing device for building safety nets based on mechanical sensors according to claim 1, characterized in that: The protective device (8) also includes; An extension rod (85) is fixedly connected to both ends of a horizontal slide rail (15), and a pressure shaft (86) is fixedly connected to one end of the extension rod (85) away from the horizontal slide rail (15). A through slot (87) is provided on the rear side of the lifting baffle (82); The limiting rail (89) is fixedly connected to the upper surface of the test frame (81), and a trapezoidal block (88) is slidably connected to the surface of the limiting rail (89). A triangular guide block (810) is fixedly connected to the trapezoidal block (88) on the side near the impact hammer (11).

4. The impact resistance testing device for building safety nets based on mechanical sensors according to claim 3, characterized in that: The limiting plate (83) and the test frame (81) are slidably connected. An elastic telescopic rod 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) and the upper surface of the test frame (81) are slidably connected. The trapezoidal block (88) and the inner surface of the through groove (87) are engaged.

5. The impact resistance testing device for building safety nets based on mechanical sensors according to claim 1, characterized in that: The pulling device (9) also includes; Connecting plate (95), the connecting plate (95) is fixedly connected to the side of the sliding plate (93) near the U-shaped plate (91); A connecting shaft (96) is hinged to the front and rear sides of the bottom end of the slide plate (93); A diagonal rod (97) is hinged to the side of the connecting shaft (96) near the slide plate (93), and a groove (98) is provided on the inner side of the diagonal 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).

6. The impact resistance testing device for building safety nets based on mechanical sensors according to claim 5, characterized in that: The slide plate (93) and the U-shaped plate (91) are slidably connected on the side near the card frame (92), the connecting plate (95) and the inner surface of the U-shaped plate (91) are slidably connected, an elastic telescopic rod is provided between the upper surface of the connecting plate (95) and the lower top surface of the test frame (81), and the inner surface of the convex shaft (99) and the slide groove (98) are slidably connected.

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