A safety net detection system

Abstract

The application relates to the technical field of safety net testing, and provides a safety net detection system, which comprises a fixing support for fixing a safety net and a lifting device for grabbing a test ball, and the fixing support is located below the lifting device; two first sliding rods and two second sliding rods are slidably arranged on the inner side of the fixing support, and the first sliding rods are perpendicular to the second sliding rods; the first sliding rods and the second sliding rods are movably provided with bolts, a plurality of pin holes are arranged at intervals in the fixing support, and each pin hole is adapted to the bolt. Based on the safety net detection system, safety nets with different sizes can be fixed and impact resistance performance detection can be carried out, and the compatibility and practicability of the detection system are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of safety net testing, and particularly relates to a safety net detection system. BACKGROUND

[0002] A safety net is a safety protection device for supporting a falling worker from a high altitude, which is fixed on an external support carrier such as a building or a bridge. After the safety net is finished and processed, the impact resistance of the safety net needs to be tested to determine whether the safety performance of the safety net is qualified.

[0003] The existing safety net detection system usually includes a fixed frame and a lifting device, the fixed frame is located below the lifting device, and the safety net is directly fixed on the fixed frame by binding or the like. During testing, the test ball used for testing is grabbed and lifted to the required height by the lifting device, and then the test ball is allowed to freely fall into the safety net from the specified height. According to the deformation degree of the safety net and whether the safety net is in contact with the sand pit on the ground, it can be determined whether the impact resistance of the safety net is qualified.

[0004] However, the sizes of safety nets applied in various places are different, and the existing fixed frame is fixed on the test site by a plurality of prefabricated steel members and is built, and the overall size of the fixed frame is fixed, so that the applicable size range of the safety net is small, which is not conducive to the impact resistance detection of safety nets of various sizes. SUMMARY

[0005] In order to conveniently detect the impact resistance of safety nets of different sizes, the present application provides a safety net detection system.

[0006] The safety net detection system provided by the present application adopts the following technical scheme:

[0007] A safety net detection system includes a fixed support for fixing a safety net and a lifting device for grabbing a test ball, and the fixed support is located below the lifting device; two first sliding rods and two second sliding rods are slidingly installed on the inner side of the fixed support, and the first sliding rods and the second sliding rods are perpendicular to each other; the first sliding rods and the second sliding rods are movably provided with a latch, and the fixed support is spaced apart and provided with a plurality of pin holes, and each pin hole is adapted to be inserted with the latch.

[0008] By adopting the technical scheme, the two slidable first sliding rods and the two slidable second sliding rods are used to fix the safety net together, when the impact resistance of safety nets of different sizes is detected, the first sliding rod or the second sliding rod is moved and the latch is inserted into the pin hole at the corresponding position, the first sliding rod or the second sliding rod is fixed, and then the size of the frame formed by the two first sliding rods and the two second sliding rods is changed, so that the safety net of different sizes is fixed and the impact resistance is detected, and the compatibility and practicality of the detection system are improved.

[0009] Optionally, the safety net detection system further comprises a deployment device for deploying the safety net, the deployment device comprising a plurality of groups of rotating mechanisms arranged at the corners of the fixing support and a driving mechanism for driving the groups of rotating mechanisms to rotate together; wherein the rotating mechanism comprises a rotating shaft rotatably connected to the fixing support, a rotating drum fixed to the rotating shaft, and a connecting rope wound around the rotating drum, and the free end of the connecting rope is provided with a quick release mechanism for fixing the safety net.

[0010] By adopting the technical scheme, before the safety net is installed, each connecting rope is in a relaxed state, and each connecting rope is quickly connected to the four corners of the safety net through the quick release mechanism, which can improve the convenience of pre-installing the safety net; after the safety net is installed, the driving mechanism is controlled to drive each rotating drum to rotate simultaneously and wind the corresponding connecting rope, so that the safety net is deployed and tightened, which plays a role of pre-deploying the safety net, so that the operator can move the first sliding rod and the second sliding rod to the side edge of the safety net and fix the safety net on the first sliding rod and the second sliding rod; in addition, since each connecting rope is wound and tightened synchronously, it is beneficial to make the tightened safety net located at the middle position of the fixing support, and then the lifting device can grasp the test ball and perform the impact resistance detection.

[0011] Optionally, the quick release mechanism comprises a fixed seat and a rotating seat rotatably connected thereto, a torsional spring is arranged between the fixed seat and the rotating seat for making the fixed seat and the rotating seat arranged at an angle; the rotating seat is provided with an outer convex part, the fixed seat is provided with an inner recess groove matched with the outer convex part, and a limiting structure is arranged between the outer convex part and the inner recess groove; when the outer convex part is inserted into the inner recess groove, the fixed seat and the rotating seat are fixed by the limiting structure and form a clamping space for clamping the safety net.

[0012] By adopting the technical scheme, when the safety net is fixed by using the quick release structure, the outer convex part of the rotating seat is matched and clamped in the inner recess groove of the fixed seat by rotating the rotating seat, and the outer convex part and the inner recess groove are fixed by the limiting structure, so that the clamping space is quickly formed to fix the safety net; when the safety net needs to be disassembled, the fixed seat and the rotating seat are reversely rotated under the action of the torsional force of the torsional spring by releasing the limiting structure, so that the safety net is quickly disassembled, which has the advantages of quick installation and quick disassembly.

[0013] Optionally, the limiting structure comprises a limiting block slidingly connected to the fixing base and a limiting clamping groove formed in the outer protruding portion, and an elastic member is arranged between the limiting block and the fixing base, for forcing the limiting block to partially enter the inner recess and be clamped in the limiting clamping groove; the limiting block is partially exposed from the fixing base.

[0014] By adopting the above technical scheme, when the outer protruding portion of the rotating base is clamped in the inner recess of the fixing base, the limiting block can be inserted into the inside of the limiting clamping groove under the elastic force of the elastic member, so as to stably fix the outer protruding portion in the inner recess. In addition, when the safety net needs to be disassembled, the exposed part of the limiting block is poked and pressed to make the limiting block smoothly separate from the limiting clamping groove, so as to reversely rotate the fixing base and the rotating base under the torsional force of the torsional spring, and realize the quick separation of the fixing base and the rotating base and the quick disassembly of the safety net.

[0015] Optionally, the driving mechanism comprises a first driving motor, a chain belt and a plurality of chain wheels, the first driving motor is fixed to one of the rotating shafts; the number of chain wheels matches the number of rotating drums, each chain wheel is fixedly sleeved on each rotating shaft, the chain belt is sleeved on the outer circumferential side of all the chain wheels, and each chain wheel is in meshing transmission with the chain belt.

[0016] By adopting the above technical scheme, by controlling the operation of the first driving motor to drive the connected rotating shaft to rotate, the chain wheel fixed to the rotating shaft can be driven to rotate, and the chain belt can make all the chain wheels rotate in the same direction, thereby realizing the winding of the connecting rope by the rotating drums and playing a role of pre-expanding the safety net.

[0017] Optionally, the expanding device further comprises a guide mechanism for guiding the connecting rope, the guide mechanism comprises two movable rods and two half hoops, the two movable rods are respectively slidingly installed on the fixed support and are freely rotatably arranged, and the rotation axes of the movable rods are vertically arranged; the two half hoops are respectively fixed to the free ends of the two movable rods, and the two half hoops are magnetically adsorbed by a magnetic component and form a rope passing area for the connecting rope to pass through, the rope passing area is at the same height as the rotating drum.

[0018] By adopting the above technical scheme, by arranging two half hoops and magnetically adsorbing them by a magnetic component to form a rope passing area, the rope passing area is at the same height as the rotating drum, and the connecting rope passing through the rope passing area can always make the local rope segment of the connecting rope close to the rotating drum opposite to the rotating drum, so that the rotating drum can smoothly wind the connecting rope when rotating, and then the safety net can be smoothly in a tensioned and straightened state.

[0019] Optionally, the outer side of the fixed support is provided with two fixedly arranged steel beams, and the two steel beams are located on the same side of the fixed support; each steel beam is provided with two groups of rope winding devices, wherein the rope winding device comprises a pull rope, a driving pulley, a driven pulley and a second driving motor, the driving pulley is fixed to the steel beam and is arranged to rotate freely, and the second driving motor is drivingly connected to the driving pulley;

[0020] The driven pulley is slidingly installed on the steel beam through an adjusting mechanism, and the adjusting mechanism is used to drive the driven pulley to move close to or away from the driving pulley; one end of the pull rope is connected to the steel beam, and the other end is connected to the quick release mechanism, and the pull rope is arranged between the driving pulley and the driven pulley.

[0021] By adopting the above technical scheme, when the safety net is expanded and tightened by the expansion device, the driven pulley is moved away from the driving pulley to form a gap by controlling the adjusting mechanism, which can reduce the frictional resistance of the pull rope, thereby improving the convenience of the rotary drum in expanding the safety net by winding the connecting rope; after the impact resistance test is completed, the safety net is disassembled and the driving mechanism is stopped, then the adjusting mechanism is controlled to move the driven pulley towards the driving pulley, the driving pulley and the driven pulley jointly clamp the pull rope, and the second driving motor is controlled to operate, the pull rope is pulled between the driving pulley and the driven pulley by friction, and the quick release structure moves towards the winding rope device, finally each quick release mechanism stays on the same side of the fixed support where the two steel beams are located, which is convenient for the operator to install the safety net outside the fixed support, and further improves the convenience of the safety net installation.

[0022] Optionally, the rope winding device further comprises a limiting frame fixed to the steel beam, the driving pulley and the driven pulley are located outside the limiting frame, and the driving pulley and the driven pulley are arranged opposite to the limiting frame; the pull rope is arranged in the limiting frame.

[0023] By adopting the above technical scheme, the limiting frame is arranged to keep the pull rope inside the area formed by the driving pulley and the driven pulley, so as to facilitate the adjusting mechanism to smoothly clamp the pull rope, and then smoothly pull each quick release mechanism to the same side of the fixed support where the two steel beams are located.

[0024] Optionally, the adjusting mechanism comprises a sliding seat slidingly installed on the steel beam and a pushing component for driving the sliding seat to move, and the driven pulley is rotationally connected to the sliding seat, and the pushing component is fixed to the steel beam.

[0025] By adopting the above technical scheme, the driven pulley can be moved towards or away from the driving pulley by controlling the pushing component to drive the sliding seat to move, which is convenient to use.

[0026] Optionally, the first sliding rod is provided with a mounting portion at each end, and the mounting portion is slidingly arranged on the fixed support; the mounting portion is rotatably connected with a roller, and the roller abuts against the upper surface of the fixed support; and the latch is movably arranged in the mounting portion.

[0027] By adopting the above technical scheme, the first sliding rod is limited in sliding on the fixed support through the mounting portion, and the roller is arranged to reduce the frictional resistance between the mounting portion and the fixed support, so as to improve the convenience of the first sliding rod in sliding on the fixed support.

[0028] In summary, the present application has at least one of the following beneficial technical effects:

[0029] 1. By arranging the first sliding rod and the second sliding rod to be slidable, and by fixing the relative positions of the first sliding rod and the second sliding rod through the cooperation of the pin shaft and the pin hole, the size of the frame surrounded by the two first sliding rods and the two second sliding rods can be changed, so as to facilitate the fixing of the safety net of different sizes and the detection of the impact resistance performance of the safety net;

[0030] 2. By arranging the quick release mechanism to quickly fix the safety net through the connection ropes, and by controlling the driving mechanism to act to drive the rotation of the corresponding connection ropes around the connection ropes, the safety net can be conveniently unfolded and tightened, and the subsequent detection of the impact resistance performance of the safety net is facilitated;

[0031] 3. By arranging the rope winding device on the steel beam, when the quick release mechanism is not used, the driving pulley and the driven pulley are controlled to act to jointly clamp the pull rope, and the operation of the second driving motor can force the pull rope to pull the quick release mechanism to move and stay on the same side of the fixed support of the two steel beams, thereby further improving the convenience of the installation of the safety net. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a schematic diagram of the overall structure of Example 1;

[0033] Figure 2 is a schematic diagram of the overall structure of Example 2; Figure 1

[0034] Figure 3 is a schematic diagram of the overall structure of Example 2;

[0035] Figure 4 is a schematic diagram of the overall structure of Example 2; Figure 3

[0036] Figure 5 is a schematic diagram of the overall structure of Example 2;

[0037] Figure 6 is a schematic diagram of the overall structure of Example 2;

[0038] ​​Figure 7 is a partial sectional view of the fixing seat in Example 2;

[0039] Figure 8 is a schematic diagram of the overall structure of Example 3;

[0040] Figure 9 is Figure 8 is an enlarged view at C in Figure 8;

[0041] Figure 10 is a schematic diagram of the rope winding device in Example 3.

[0042] BRIEF DESCRIPTION OF DRAWINGS 1, fixing support; 11, first sliding rod; 111, mounting portion; 112, roller; 113, extension portion; 12, second sliding rod; 13, bolt; 14, pin hole; 15, steel column; 2, lifting device; 21, load bearing support; 22, lifting machine; 23, mobile lifting mechanism; 3, rotating mechanism; 31, rotating shaft; 32, rotating drum; 33, connecting rope; 4, driving mechanism; 41, first driving motor; 42, chain belt; 43, chain wheel; 5, quick release mechanism; 51, fixing seat; 511, inner recess; 512, movable slot; 52, rotating seat; 521, outer protrusion; 53, limiting structure; 531, limiting block; 532, limiting clamping groove; 533, connecting block; 54, compression spring; 6, guiding mechanism; 61, movable rod; 62, half hoop; 63, mobile seat; 64, magnet; 7, steel beam; 8, rope winding device; 81, pull rope; 82, driving pulley; 83, driven pulley; 84, second driving motor; 85, adjusting mechanism; 851, sliding seat; 852, push member; 86, limiting frame; 9, sand pit. DETAILED DESCRIPTION

[0043] The following will be described in detail in combination with the accompanying drawings. Figures 1-10 The application is described in further detail.

[0044] Example 1

[0045] The embodiments of the application disclose a safety net detection system.

[0046] With reference to the drawings Figure 1 A safety net detection system comprises a fixing support 1 for fixing a safety net and a lifting device 2 for grabbing a test ball, and the fixing support 1 is located below the lifting device 2. Specifically, in this embodiment, the fixing support 1 is fixed by building a building carrier, wherein the building carrier is a two-layer structure, the fixing support 1 is built on the bottom floor, and the surface of the bottom floor is provided with a sand pit 9, which is located inside the fixing support 1 and is used for receiving the test ball falling freely in the impact resistance performance detection; and the lifting device 2 is built on the top of the top floor.

[0047] The lifting device 2 comprises a load-bearing support 21 fixed to the top floor of the building and a lifting machine 22 slidingly installed on the load-bearing support 21, and a moving lifting mechanism 23 is arranged between the lifting machine 22 and the load-bearing support 21, for driving the lifting machine 22 to move in a horizontal plane and to ascend and descend in a vertical plane; the lifting machine 22 and the moving lifting mechanism 23 are both prior art, which will not be described here in detail.

[0048] The fixed support 1 is a polygonal frame structure built by a plurality of steel columns 15, which can be rectangular, square or other regular shapes, and in the embodiment, the shape of the fixed support 1 is set as square. Two first sliding rods 11 and two second sliding rods 12 are slidingly arranged inside the fixed support 1, the first sliding rod 11 is arranged across two opposite steel columns 15 of the fixed support 1, the second sliding rod 12 is arranged across the other two opposite steel columns 15 of the fixed support 1, and the first sliding rod 11 and the second sliding rod 12 are arranged perpendicularly to each other. The sliding mode between the first sliding rod 11 and the fixed support 1 is the same as the sliding mode between the second sliding rod 12 and the fixed support 1, and in the embodiment, the sliding mode between the first sliding rod 11 and the fixed support 1 is described, and the others will not be described here in detail.

[0049] Referring to Figure 2 , two ends of the first sliding rod 11 are respectively fixed with mounting portions 111, wherein the side of the mounting portion 111 away from the first sliding rod 11 is provided with two extension portions 113, the two extension portions 113 are arranged at intervals and are integrally formed with the mounting portion 111, and the interval between the two extension portions 113 is equal to the width of the steel column 15; by making the steel column 15 enter the area between the two extension portions 113, the steel column 15 can freely slide between the two extension portions 113. The side of the mounting portion 111 away from the first sliding rod 11 is provided with a plurality of rollers 112, the rollers 112 are freely rotatably installed on the mounting portion 111, and the outer circumferential side of the roller 112 abuts against the steel column 15; the rollers 112 are arranged to reduce the frictional resistance between the mounting portion 111 and the steel column 15, and improve the smoothness of the movement of the mounting portion 111 on the steel column 15.

[0050] A bolt 13 is movably inserted between the two extension portions 113, and a plurality of pin holes 14 are formed in the steel column 15, all the pin holes 14 are equidistantly arranged along the extension direction of the steel column 15; each pin hole 14 can be matched with the bolt 13 to be inserted, so as to fix the position of the first sliding rod 11 on the fixed support 1. In addition, by changing the positions of the two first sliding rods 11 and the two second sliding rods 12, the size of the frame surrounded by the two first sliding rods 11 and the two second sliding rods 12 can be changed, so as to facilitate the installation and fixation of safety nets of different sizes.

[0051] The implementation principle of the embodiment 1 of the application is as follows:

[0052] By moving the first sliding rods 11 and the second sliding rods 12, and by fixing the first sliding rods 11 and the second sliding rods 12 through the cooperation of the pins 13 and the pin holes 14, the size of the frame surrounded by the two first sliding rods 11 and the two second sliding rods 12 can be changed, so as to fix safety nets of different sizes and perform impact resistance performance detection, and the compatibility and practicality of the detection system are improved.

[0053] Embodiment 2

[0054] The embodiment of the application discloses a safety net detection system.

[0055] With reference to Figure 3 The safety net detection system disclosed by the embodiment of the application has the same remaining components as those of Embodiment 1, and details are not repeated here; the difference from Embodiment 1 is that the safety net detection system in the embodiment further comprises an unfolding device for unfolding the safety net to be tested, so as to move the first sliding rods 11 and the second sliding rods 12 to install and fix the safety net; the specific structure is as follows.

[0056] The unfolding device comprises a driving mechanism 4, a plurality of rotating mechanisms 3 and a plurality of guide mechanisms 6, the number of the rotating mechanisms 3 is four, and the four rotating mechanisms 3 are arranged at the corners of the fixed support 1. With reference to Figure 4 The rotating mechanism 3 comprises a rotating shaft 31, a rotating drum 32 and a connecting rope 33, the rotating shaft 31 is rotationally connected to the fixed support 1, and the rotating drum 32 is fixedly connected to one end of the rotating shaft 31 away from the fixed support 1. The connecting rope 33 is made of high-strength nylon rope, and with reference to Figure 3 One end of the connecting rope 33 is connected to the rotating drum 32, and the other end of the connecting rope 33 is freely arranged and connected with a quick release mechanism 5 for quickly fixing and disassembling the safety net. Back to Figure 4 The driving mechanism 4 is arranged outside each group of rotating mechanisms 3 and is used to drive the rotation of each group of rotating mechanisms 3; the number of the guide mechanisms 6 is equal to that of the rotating mechanisms 3, and each guide mechanism 6 is arranged outside the rotating mechanism 3 and is used to guide the running direction of the connecting rope 33, so as to wind the connecting rope 33 around the rotating drum 32.

[0057] With reference to Figure 4The driving mechanism 4 comprises a first driving motor 41, a chain belt 42 and a plurality of chain wheels 43. The body of the first driving motor 41 is fixed to the steel column 15 of the fixed support 1, and the output shaft of the first driving motor 41 penetrates the steel column 15 and is fixedly connected with one of the rotating shafts 31. The number of the chain wheels 43 is equal to the number of the rotating drums 32. Each chain wheel 43 is sleeved on and fixed to the rotating shaft 31, and the chain belt 42 is sleeved on the outer circumferential side of all the chain wheels 43. Each chain wheel 43 is in meshing transmission with the chain belt 42. When the first driving motor 41 operates to drive the connected rotating shaft 31 to rotate, the rotating shafts 31 can be driven to rotate in the same direction by the cooperation of the chain belt 42 and the chain wheels 43, so as to realize the synchronous winding of the connecting ropes 33.

[0058] The guiding mechanism 6 comprises two movable rods 61 and two half hoops 62. The two movable rods 61 are respectively slidably installed on two adjacent steel columns 15 of the fixed support 1. Specifically, one end of the movable rod 61 is rotatably connected with a moving seat 63, and the steel column 15 is provided with a sliding rail which is slidably matched with the moving seat 63, so that the movable rod 61 can slide and rotate freely on the steel column 15, and the rotation axis of the movable rod 61 is arranged in the same direction as the vertical direction. Meanwhile referring to Figure 5 The half hoop 62 is fixed to one end of the movable rod 61 away from the moving seat 63, and a magnetic component is arranged between the two half hoops 62. The magnetic component comprises two magnets 64 respectively embedded in the two half hoops 62. The magnetic attraction force of the two magnets 64 can make the two half hoops 62 mutually adsorb to form a rope passing area. The rope passing area is at the same height as the rotating drum 32. By making the connecting rope 33 pass through the rope passing area, the local rope segment of the connecting rope 33 close to the rotating drum 32 can always be opposite to the rotating drum 32, so as to smoothly wind the connecting rope 33 when the rotating drum 32 rotates.

[0059] Referring to Figure 6 The quick release mechanism 5 comprises a fixed seat 51 and a rotating seat 52. The rotating seat 52 is rotatably connected to the fixed seat 51, and a torsional spring is arranged at the rotatable connection position between the rotating seat 52 and the fixed seat 51. The torsional spring always has a torsional force acting between the rotating seat 52 and the fixed seat 51, so as to drive the rotating seat 52 and the fixed seat 51 to rotate in opposite directions, and further make the rotating seat 52 and the fixed seat 51 normally arranged at an angle away from each other.

[0060] The side of the rotating base 52 facing the fixing base 51 is provided with a plurality of convex portions 521, each of which is integrally formed with the rotating base 52; the side of the fixing base 51 facing the rotating base 52 is provided with a plurality of concave grooves 511, the number of the concave grooves 511 being equal to that of the convex portions 521, each of the convex portions 521 being arranged opposite to each of the concave grooves 511, and each of the convex portions 521 being able to be arranged opposite to each of the concave grooves 511 by rotating the rotating base 52. The fixing base 51 and the rotating base 52 are further provided with a limiting structure 53, which can keep the fixing base 51 and the rotating base 52 fixed when the convex portions 521 are inserted into the concave grooves 511, so as to form a clamping space for clamping and fixing the safety net, thereby facilitating quick installation and quick disassembly of the safety net.

[0061] Referring to Figure 7 The fixing base 51 is internally provided with a movable groove 512, and each of the concave grooves 511 is partially communicated with the movable groove 512; the limiting structure 53 comprises a plurality of limiting blocks 531 movably installed in the movable groove 512 and a plurality of limiting clamping grooves 532 formed in each of the convex portions 521, each of the limiting blocks 531 is fixedly connected with each of the limiting blocks 531 through a connecting block 533, and all of the limiting blocks 531 and all of the connecting blocks 533 are integrally formed. Each of the limiting blocks 531 is located outside the concave groove 511, and one or more of the limiting blocks 531 are provided with elastic members between the limiting blocks 531 and the movable groove 512. In the embodiment, the elastic members are selected to be compression springs 54, one end of each of the compression springs 54 abuts against the limiting block 531, and the other end of each of the compression springs 54 abuts against the inner wall of the movable groove 512; the compression spring 54 can always generate an elastic force acting on the connecting block 533, so as to make the limiting block 531 partially enter the concave groove 511.

[0062] The shape of the limiting clamping groove 532 matches that of the limiting block 531, when the rotating base 52 is rotated to make the convex portion 521 enter the concave groove 511, the limiting clamping groove 532 is arranged opposite to the adjacent limiting block 531, and the limiting block 531 is automatically clamped into the limiting clamping groove 532 under the elastic force of the compression spring 54, so as to keep the fixing base 51 and the rotating base 52 fixed, thereby facilitating clamping and fixing of the safety net. In addition, the movable groove 512 partially penetrates the outer side of the fixing base 51, and the limiting block 531 partially protrudes from the fixing base 51; when the safety net needs to be disassembled, the protruding part of the limiting block 531 is poked to force the compression spring 54 to contract and deform inwardly, so as to make the limiting block 531 smoothly separate from the limiting clamping groove 532, thereby facilitating reverse rotation and quick separation of the fixing base 51 and the rotating base 52 under the torsional force of the torsion spring.

[0063] The implementation principle of the application embodiment 2 is as follows:

[0064] Before the safety net is installed, each connecting rope 33 is in a slack state, and each connecting rope 33 can be quickly connected to four corners of the safety net through the quick release mechanism 5; then the driving mechanism 4 is controlled to act to drive each rotating drum 32 to rotate simultaneously, each rotating drum 32 winds the corresponding connecting rope 33, and the safety net can be unfolded and tightened, so that the safety net is pre-unfolded. Then the operator moves the first sliding rod 11 and the second sliding rod 12 to the side edge of the safety net, and fixes the safety net to the first sliding rod 11 and the second sliding rod 12, which can improve the convenience of installing the safety net, and the operator does not need to run frequently.

[0065] Embodiment 3

[0066] The embodiment of the application discloses a safety net detection system.

[0067] With reference to Figure 8 , the safety net detection system disclosed by the embodiment of the application has the same remaining components as those in Embodiment 1, which will not be described again here; the difference from Embodiment 2 is that the embodiment further has a rope winding device 8 for moving the quick release mechanism 5 of each connecting rope 33 to the same side of the fixed support 1, so as to further improve the convenience of installing the safety net; the specific structure is as follows.

[0068] Two steel beams 7 are arranged outside the fixed support 1, and the two steel beams 7 are located on the same side of the fixed support 1; in the embodiment, the two steel beams 7 are structural beam columns arranged between the bottom floor and the top floor of the building, and in other embodiments, the two steel beams 7 can also be other arranged beam columns, which are not limited to the way provided in the embodiment. Each steel beam 7 is provided with two groups of rope winding devices 8, that is, the specific number of the rope winding devices 8 is four, which are used to correspondingly control the movement of the connecting rope 33.

[0069] With reference to Figure 9 , the rope winding device 8 includes a pull rope 81, a driving pulley 82, a driven pulley 83, a second driving motor 84 and a limiting frame 86; wherein the driving pulley 82 is fixed to the steel beam 7 and is arranged to freely rotate on the steel beam 7; with reference to Figure 10 , the body of the second driving motor 84 is fixed to the steel beam 7, and the output end of the second driving motor 84 is coaxially connected to the driving pulley 82, so as to drive the driving pulley 82 to rotate.

[0070] Back to Figure 9 , the steel beam 7 is further provided with an adjusting mechanism 85, and the driven pulley 83 is slidingly installed on the steel beam 7 through the adjusting mechanism 85, which is used to drive the driven pulley 83 to move towards or away from the driving pulley 82.

[0071] The adjusting mechanism 85 comprises a sliding seat 851 and a pushing component 852. The sliding seat 851 is slidingly installed on the steel beam 7, and the sliding direction of the sliding seat 851 is arranged in the same direction as the extension direction of the steel beam 7. The driven pulley 83 is freely rotatably connected to the sliding seat 851. The pushing component 852 is selected from a pneumatic cylinder. The cylinder body of the pneumatic cylinder is fixed to the steel beam 7, and the piston rod of the pneumatic cylinder is fixedly connected to the sliding seat 851. The piston rod of the pneumatic cylinder is in a normal retracted state, and the driven pulley 83 is arranged at a distance from the driving pulley 82. The driven pulley 83 can be moved to be close to the driving pulley 82 by controlling the action of the pneumatic cylinder. It can be understood that, in other embodiments, the pushing component 852 can also be selected from a hydraulic cylinder or an electric push rod, and is not limited to the manner provided in the embodiment.

[0072] The pulling rope 81 in the embodiment is also selected from a nylon rope. One end of the pulling rope 81 is connected to the steel beam 7, and the other end of the pulling rope 81 is connected to the fixed seat 51 of the quick release mechanism 5. The middle part of the pulling rope 81 is arranged between the driving pulley 82 and the driven pulley 83. When the pushing component 852 drives the driven pulley 83 to be close to the driving pulley 82, the driven pulley 83 and the driving pulley 82 can finally jointly hold the pulling rope 81. The driving pulley 82 is driven to rotate by the rotation of the second driving component, the pulling rope 81 is driven to move by the friction force, and the quick release mechanism 5 connected to the free end of the pulling rope 33 is driven to move to the same side of the fixed support 1 where the two steel beams 7 are located.

[0073] The limiting frame 86 is fixed to the steel beam 7. The driving pulley 82 and the driven pulley 83 are both located outside the limiting frame 86, and the driving pulley 82 and the driven pulley 83 are arranged opposite to the limiting frame 86. The middle part of the pulling rope 81 also passes through the limiting frame 86. The limiting frame 86 is arranged to make the pulling rope 81 always stay inside the area formed by the driving pulley 82 and the driven pulley 83, so as to smoothly drive the pulling rope 81 to move.

[0074] The implementation principle of the embodiment 3 is as follows:

[0075] After the impact resistance test of the safety net is completed, the safety net is quickly removed by the quick release mechanism 5. The operator can control the action of each pushing component 852 to drive each driven pulley 83 to move to be close to the driving pulley 82 and hold the adjacent pulling rope 81. Then, the operator controls the operation of each second driving motor 84 to drive the driving pulley 82 to rotate. The driving pulley 82 and the driven pulley 83 jointly drive the pulling rope 81 to move, so as to drive the quick release mechanism 5 at the free end of each pulling rope 81 to move and stay on the same side of the fixed support 1 where the two steel beams 7 are located. This is beneficial to the operator to install the safety net outside the fixed support 1, and further improves the convenience of the safety net installation.

[0076] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A safety net inspection system, comprising a fixing bracket (1) for fixing the safety net and a lifting device (2) for grasping a test ball, wherein the fixing bracket (1) is located below the lifting device (2); characterized in that: The fixed bracket (1) is slidably mounted with two first sliding rods (11) and two second sliding rods (12) on its inner side. The first sliding rods (11) and the second sliding rods (12) are perpendicular to each other. Both the first sliding rods (11) and the second sliding rods (12) are movably provided with pins (13). The fixed bracket (1) is provided with a plurality of pin holes (14) at intervals. Each pin hole (14) is adapted to be inserted into the pin (13). The safety net detection system also includes a deployment device for deploying the safety net. The deployment device includes multiple sets of rotating mechanisms (3) located at each corner of the fixed support (1) and a drive mechanism (4) for driving each set of rotating mechanisms (3) to rotate together. The rotating mechanism (3) includes a rotating shaft (31) rotatably connected to the fixed support (1), a rotating drum (32) fixed to the rotating shaft (31), and a connecting rope (33) wound around the rotating drum (32). The free end of the connecting rope (33) is provided for fixing the safety net. The safety net has a quick-release mechanism (5); the drive mechanism (4) includes a first drive motor (41), a chain belt (42) and a plurality of sprockets (43), the first drive motor (41) is fixed to one of the rotating shafts (31); the number of sprockets (43) matches the number of the rotating drums (32), each sprocket (43) is fixedly sleeved on each of the rotating shafts (31), the chain belt (42) is sleeved on the outer periphery of all the sprockets (43), and each sprocket (43) meshes with the chain belt (42) for transmission; Two fixed steel beams (7) are provided on the outside of the fixed bracket (1), and the two steel beams (7) are located on the same side of the fixed bracket (1); each steel beam (7) is provided with two sets of rope winding devices (8), wherein the rope winding device (8) includes a pull rope (81), a driving pulley (82), a driven pulley (83), and a second drive motor (84). The driving pulley (82) is fixed to the steel beam (7) and is freely rotatable. 4) Drive connected to the active pulley (82); The driven pulley (83) is slidably installed on the steel beam (7) through the adjustment mechanism (85), and the adjustment mechanism (85) is used to drive the driven pulley (83) to move closer to or away from the active pulley (82); One end of the pull rope (81) is connected to the steel beam (7), and the other end is connected to the quick release mechanism (5), and the pull rope (81) is passed between the active pulley (82) and the driven pulley (83).

2. The safety net detection system according to claim 1, characterized in that: The quick-release mechanism (5) includes a fixed seat (51) and a rotating seat (52) rotatably connected thereto. A torsion spring is provided between the fixed seat (51) and the rotating seat (52) to make the fixed seat (51) and the rotating seat (52) set at an angle. The rotating seat (52) is provided with an outward protrusion (521). The fixed seat (51) is provided with an inner groove (511) that is adapted to be inserted into the outward protrusion (521). A limiting structure (53) is provided between the outward protrusion (521) and the inner groove (511). When the outward protrusion (521) is inserted into the inner groove (511), the fixed seat (51) and the rotating seat (52) are fixed by the limiting structure (53) and form a clamping space for clamping and fixing the safety net.

3. The safety net detection system according to claim 2, characterized in that: The limiting structure (53) includes a limiting block (531) slidably connected to the fixed base (51) and a limiting slot (532) opened in the protrusion (521). An elastic element is provided between the limiting block (531) and the fixed base (51) to force the limiting block (531) to partially enter the inner groove (511) and be locked in the limiting slot (532); the limiting block (531) is partially exposed outside the fixed base (51).

4. The safety net detection system according to claim 1, characterized in that: The unfolding device also includes a guide mechanism (6) for guiding the connecting rope (33). The guide mechanism (6) includes two movable rods (61) and two semi-circular hoops (62). The two movable rods (61) are slidably installed on the fixed bracket (1) and freely rotated. The axis of rotation of the movable rods (61) is vertical. The two semi-circular hoops (62) are fixed to the free ends of the two movable rods (61). The two semi-circular hoops (62) are magnetically attracted by magnetic components and form a rope-passing area for the connecting rope (33) to pass through. The rope-passing area is at the same height as the rotating drum (32).

5. The security net detection system according to claim 1, characterized in that: The rope winding device (8) also includes a limiting frame (86) fixed to the steel beam (7). The active pulley (82) and the driven pulley (83) are both located outside the limiting frame (86), and the active pulley (82) and the driven pulley (83) are both arranged opposite to the limiting frame (86). The pull rope (81) passes through the limiting frame (86).

6. The security net detection system according to claim 1, characterized in that: The adjustment mechanism (85) includes a sliding seat (851) slidably mounted on the steel beam (7) and a pushing component (852) for driving the sliding seat (851) to move. The driven pulley (83) is rotatably connected to the sliding seat (851), and the pushing component (852) is fixed to the steel beam (7).

7. The safety net detection system according to claim 1, characterized in that: The first sliding rod (11) has mounting parts (111) at both ends, and the mounting parts (111) are slidably disposed on the fixed bracket (1); the mounting parts (111) are rotatably connected to rollers (112), and the rollers (112) abut against the upper surface of the fixed bracket (1); the pin (13) is movably inserted into the mounting parts (111).

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