A performance test device for flexible woven safety flat net

Abstract

The present invention relates to the technical field of safety net performance test, and in particular to a flexible woven safety net performance test device, comprising a rectangular base with a No. 1 slide rail symmetrically arranged on the upper end surface, a supporting frame is arranged on the rectangular base through a plurality of inverted L-shaped blocks, a safety net is hung inside the supporting frame through a plurality of hooks, a spherical weight and a square weight are placed on the safety net, a lifting mechanism is arranged in two No. 1 slide rails of the rectangular base through a No. 1 electric slider, and a clamping mechanism is arranged between the two lifting mechanisms; in the present invention, two weights of different shapes, sizes and weights can be used to realize synchronous detection of the pressure-bearing performance of the safety net, the falling position of the weight can be changed during detection, and multiple point detection is ensured, and a dynamic and static combined detection method is adopted to realize multiple detection methods, thereby improving the diversity and accuracy of the safety net detection.

Description

Technical Field

[0001] The invention relates to the technical field of safety flat net performance testing, and in particular to a flexible braided safety flat net performance testing device. Background Art

[0002] A safety net is a protective facility used to prevent people or objects from falling from heights and causing injuries. It is usually made of high-strength nylon, polyethylene or other materials, and has a certain tensile strength and wear resistance. The safety net can be installed in construction sites, oil drilling platforms, bridges, chimneys and other high-altitude workplaces. Its function is to catch falling people or objects and reduce their impact force in the event of a fall accident, thereby protecting the safety of personnel. Therefore, according to different usage sites and functions, safety nets can be divided into many types, such as safety flat nets, safety vertical nets and dense mesh safety vertical nets.

[0003] In actual use, safety nets need to undergo a series of tests before being put into use, such as pressure-bearing performance, wear resistance, corrosion resistance, etc. Among them, the pressure-bearing performance of safety nets is particularly important, as it is an important indicator to ensure personal safety.

[0004] For the existing method of testing the pressure bearing performance of the safety net, a rope is usually used to lift the wooden beam outdoors, and then the rope is released to make the wooden beam fall with gravity and contact the safety net. By observing whether the safety net is damaged, it can be judged whether the pressure bearing performance of the safety net is qualified.

[0005] The disadvantages of this detection method are: when ropes are used to pull wooden beams, the lifting speed of the wooden beams is slow when they are recovered, and the wooden beams are relatively long, and often require safety nets that match their size. This not only causes more losses when testing the safety nets, but also makes it difficult to change the falling position of the wooden beams. Secondly, when ropes are used to release wooden beams, the falling height of the wooden beams is basically fixed, and the simulated detection results of a single falling height are not representative. Summary of the invention

[0006] In order to achieve the above-mentioned purpose, the embodiment of the present application provides the following technical solutions: a flexible woven safety net performance testing device, comprising a rectangular base with a No. 1 slide rail symmetrically opened on the upper end surface, a supporting frame is arranged on the rectangular base through a plurality of inverted L-shaped blocks, a safety net is hung inside the supporting frame through a plurality of hooks, spherical weights and square weights are placed on the safety net, a lifting mechanism is set in the two No. 1 slide rails of the rectangular base through the sliding of a No. 1 electric slider, and a clamping mechanism is arranged between the two lifting mechanisms.

[0007] The clamping mechanism includes a U-shaped frame jointly arranged between two lifting mechanisms, with the opening of the U-shaped frame facing downward. On the front and rear sides of the left and right side walls inside the U-shaped frame, first sliding rods are symmetrically and fixedly arranged. Between the two first sliding rods and on the upper end surface inside the U-shaped frame, a second sliding rail is provided. On the second sliding rail, a driving component, a clamping component for clamping heavy objects, and an auxiliary component for assisting clamping are arranged through an electric slider.

[0008] The driving component includes a driving motor fixedly arranged inside the electric slider. An active gear is fixedly sleeved on the outer wall of the output shaft of the driving motor. The bottom end of the output shaft of the driving motor is fixedly connected with a threaded lead screw. A bearing tray is arranged on the lower end surface of the active gear. Four L-shaped connecting blocks are fixedly arranged in a circumferential direction on the lower end surface of the bearing tray. The other ends of the four L-shaped connecting blocks are fixedly connected with the lower end surface of the second electric slider. On the front and rear sides of the lower end surface of the bearing tray, support blocks are symmetrically and fixedly arranged. On the left and right side walls of the two support blocks, V-shaped plates are symmetrically arranged. The tops of the two V-shaped plates on the same support block are rotationally connected through a pin shaft. On the left and right side walls of the two support blocks, connecting plates are also symmetrically arranged. The tops of the two connecting plates on the same support block are also rotationally connected through a pin shaft. The V-shaped plates are located above the connecting plates, and the corner positions of the two V-shaped plates are opposite. A connecting gasket is spirally arranged on the outer wall of the threaded lead screw in the left-right direction. On the upper end surface of the connecting gasket and on the left and right sides of the threaded lead screw, waist-shaped blocks are symmetrically arranged. The two waist-shaped blocks are connected through a pin shaft, and the waist-shaped blocks are fixedly connected with the connecting gasket. A swing rod is rotatably arranged between the two waist-shaped blocks. The ends of the two swing rods are hinged to the corner positions of the corresponding V-shaped plates.

[0009] The clamping component includes two clamping blocks symmetrically distributed front and rear. The clamping blocks are arranged between the left and right V-shaped plates, and the two clamping blocks are respectively fixedly connected with their corresponding V-shaped plates and connecting plates. On the outer walls of the two clamping blocks close to each other, rectangular grooves are provided. Inside the two rectangular grooves, two compression springs distributed up and down are fixedly arranged. The same-side two compression springs are jointly fixedly arranged with arc-shaped clamping plates with arc grooves on their outer walls. Electromagnets are arranged on the clamping parts of the two arc-shaped clamping plates.

[0010] Preferably, the auxiliary component includes racks symmetrically arranged left and right and sliding on the lower end surface of the second electric slider. The two racks are meshed with the active gear. On the sides of the lower end surfaces of the two racks away from each other, rectangular blocks are fixedly arranged. On the lower end surfaces of the two rectangular blocks, auxiliary clamping blocks with sloping front and rear side walls are arranged through torsion springs. On the side walls of the two auxiliary clamping blocks close to each other, frustum-shaped grooves for assisting in clamping spherical heavy objects and square heavy objects are provided.

[0011] Preferably, the lifting mechanism includes a support frame arranged at the upper end of the No. 1 electric slider, and slide grooves are opened on the opposite sides of the left and right support frames. A No. 2 slide bar is fixedly arranged in the slide groove symmetrically front and back, and the two ends of the No. 2 slide bar are respectively fixedly connected to the upper and lower end surfaces of the slide groove, and a hydraulic telescopic cylinder is vertically arranged on the lower end surface of the slide groove, and a square slide bar is slidably arranged on the outer walls of the two No. 2 slide bars on the same side, and the lower end surface of the square slide bar is fixedly connected to the telescopic section of the hydraulic telescopic cylinder.

[0012] Preferably, a partition is fixedly provided at the center position of the support bracket along the front-to-back direction.

[0013] Preferably, a shock-absorbing cushion is placed inside the rectangular base and below the support bracket.

[0014] Preferably, the outer walls of the spherical weights and the square weights on the two safety nets are provided with anti-slip grooves for increasing friction and facilitating clamping.

[0015] Preferably, the diameters of the two truncated cone grooves gradually decrease from the side closer to each other to the side farther away from each other.

[0016] Compared with the prior art, the embodiments of the present invention provide the following beneficial effects:

[0017] 1. The present invention can divide the safety net into two test areas through a partition, while reducing the detection loss of the safety net, it can realize the synchronous detection of heavy objects of different shapes and sizes in the two test areas to simulate a more realistic working environment of the safety net. At the same time, during the detection, the position of the heavy object falling can be changed through the lifting mechanism and the clamping mechanism to ensure the detection of multiple points of the safety net, thereby improving the diversity of the safety net detection and the accuracy of the detection results.

[0018] 2. In the present invention, heavy objects of different shapes are placed in the two test areas. In actual testing, dynamic falling test can be carried out on one of the safety nets, while static bearing performance test can be carried out on the other safety net. After a period of testing, alternating tests can be carried out. This test adopts a combination of dynamic and static methods, which is more in line with the actual use of the safety net and makes the test results more accurate.

[0019] 3. The present invention mainly uses a hydraulic telescopic cylinder to drive the lifting of heavy objects, which can not only ensure relatively efficient and rapid movement, but also realize the adjustment of different detection heights, thereby improving the efficiency of the safety flat net detection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0021] Figure 2 It is a top view of the rectangular base and the supporting bracket of the present invention.

[0022] Figure 3 It is a schematic structural diagram of the lifting mechanism in the present invention.

[0023] Figure 4 It is a schematic plan view of the clamping mechanism in the present invention.

[0024] Figure 5 It is a schematic plan view of the driving component and the clamping component in the present invention.

[0025] Figure 6 It is a schematic perspective view of the driving component and the clamping component in the present invention.

[0026] Figure 7 It is a schematic structural diagram of the auxiliary component in the present invention.

[0027] Figure 8 It is a connection schematic diagram of the L-shaped connecting block and the second electric slider in the clamping component.

[0028] Fig. 9 It is a schematic diagram when the present invention conducts a dynamic pressure-bearing performance test on the safety net.

[0029] Reference numerals in the figure: 1, rectangular base; 11, first slide rail; 12, inverted L-shaped block; 13, shock-absorbing soft pad; 2, supporting bracket; 21, partition board; 3, safety flat net; 4, lifting mechanism; 41, support frame; 411, chute; 42, second slide rod; 43, hydraulic telescopic cylinder; 44, square slider; 5, clamping mechanism; 51, C-shaped frame; 52, first slide rod; 53, second slide rail; 54, driving component; 541, driving motor; 542, driving gear; 543, threaded lead screw; 544, bearing tray; 545, support block; 546, V-shaped plate; 547, connecting plate; 548, waist-shaped block; 549, swing rod; 55, clamping component; 551, clamping block; 552, arc-shaped clamping plate; 56, auxiliary component; 561, rack; 562, rectangular block; 563, auxiliary clamping block; 564, frustum groove. Detailed implementation manners

[0030] The following further elaborates on this application in conjunction with the attached Figure 1-9 for a more detailed description.

[0031] Please refer to Figure 1A flexible woven safety net performance test device comprises a rectangular base 1 with a No. 1 slide rail 11 symmetrically arranged on the upper end surface, a support frame 2 is arranged on the rectangular base 1 through a plurality of inverted L-shaped blocks 12, the support frame 2 is a rectangular frame structure, and a crossbeam extending in the front-to-back direction is fixed to the middle part of the bottom end of the rectangular frame, and the end surfaces of the two inverted L-shaped blocks 12 located at the center position on the front and rear sides of the rectangular base 1 are both provided with threaded grooves, and the two threaded grooves are positioned oppositely, and a safety net 3 is hung inside the support frame 2 through a plurality of hooks (not shown in the drawings), and a spherical weight and a square weight are placed on the safety net 3, and a lifting mechanism 4 is slidably arranged in the two No. 1 slide rails 11 of the rectangular base 1 through a No. 1 electric slider, and a clamping mechanism 5 is arranged between the two lifting mechanisms 4.

[0032] During the specific work, the safety net 3 is manually hung on several hooks, and the safety net 3 is stretched tight and straight, and then the spherical weight and the square weight are placed on the safety net 3, and the No. 1 electric slider is controlled to drive the clamping mechanism 5 to move above the spherical weight, and then the lifting mechanism 4 is started to drive the clamping mechanism 5 to approach the weight and clamp the weight through the clamping mechanism 5, and then the lifting mechanism 4 is controlled to rise and reset to the test height, and the clamping mechanism 5 is controlled to release the weight, and the dynamic pressure-bearing performance of the safety net 3 is tested by the gravity of the free fall of the weight, and the above-mentioned operation steps are repeated to repeatedly and at different positions of the same safety net 3. If the safety net 3 is not damaged during the dynamic test, it is qualified, otherwise it is unqualified.

[0033] It should be noted that when the safety net 3 on one side where the spherical weight is placed is subjected to a weight falling detection, the square weight on the other side of the safety net 3 remains stationary to test its static pressure bearing performance. After the safety net 3 on the side where the spherical weight is placed is dynamically detected for a period of time, an alternate detection is performed.

[0034] Please refer to Figure 1 and Figure 2 A partition plate 21 is fixedly provided at the center position of the support bracket 2 along the front-to-back direction.

[0035] Please refer to Figure 1 The outer walls of the spherical weights and the square weights on the two safety flat nets 3 are provided with anti-skid grooves for increasing friction and facilitating clamping.

[0036] During the specific operation, the partition 21 is pressed down and snapped into the interior of the support bracket 2, and then two bolts are used to screw into the threaded grooves of the front and rear inverted L-shaped blocks 12 respectively, so that the two inverted L-shaped blocks 12 are fixedly connected to the front and rear ends of the partition 21. At this time, the crossbeam and the partition 21 clamp the safety net 3 and separate it into two test areas, and then spherical weights or square weights are placed in the two test areas respectively.

[0037] It should be noted that in order to simulate the actual supporting work of the safety net 3, the weights of the spherical and square weights on the safety net 3 can be selected with different weights to simulate falling objects of different weights in practice.

[0038] Please refer to Figure 1 and Figure 3 , the lifting mechanism 4 includes a support frame 41 provided at the upper end of the first electric slider. On the opposite sides of the left and right support frames 41, there are both 411 opened. Inside the chute 411, second sliding rods 42 are symmetrically and fixedly arranged front and back. The two ends of the second sliding rod 42 are respectively fixedly connected to the upper and lower end faces of the chute 411. A hydraulic telescopic cylinder 43 is vertically arranged on the lower end face inside the chute 411. On the outer walls of the two second sliding rods 42 on the same side, a square slider 44 is slidably arranged in common. The lower end face of the square slider 44 is fixedly connected to the telescopic section of the hydraulic telescopic cylinder 43.

[0039] Please refer to Figure 3 and Figure 4 , the clamping mechanism 5 includes a U-shaped frame 51 jointly arranged between the two support frames 41. The opening of the U-shaped frame 51 faces downward. Inside the U-shaped frame 51, first sliding rods 52 are symmetrically and fixedly arranged front and back. Between the two first sliding rods 52 and on the upper end face inside the U-shaped frame 51, a second sliding rail 53 is opened. On the second sliding rail 53, a driving component 54, a clamping component 55 for clamping the weight, and an auxiliary component 56 for assisting in clamping are arranged through an electric slider.

[0040] After the preparatory work before detection is completed, control the two support frames 41 and the second electric slider inside the second sliding rail 53 to slide synchronously above one side of the weight. Immediately afterwards, control the two hydraulic telescopic cylinders 43 to retract synchronously, and drive the U-shaped frame 51 to gradually approach the weight. Then, by starting the driving component 54, drive the clamping component 55 and the auxiliary component 56 to clamp and fix the weight. After clamping, control the two hydraulic telescopic cylinders 43 to extend synchronously, drive the clamping mechanism 5 and the weight to move upward to the test height, and then release the weight. The weight falls freely and falls into the safety net 3. Finally, observe whether the safety net 3 is damaged to judge whether the safety net 3 is qualified.

[0041] Please refer to Figure 5 , Figure 6 and Figure 8The driving assembly 54 includes a driving motor 541 fixedly arranged inside the No. 2 electric slider, a driving gear 542 is fixedly sleeved on the outer wall of the output shaft of the driving motor 541, a threaded screw 543 is fixedly connected to the bottom end of the output shaft of the driving motor 541, a bearing tray 544 is arranged on the lower end surface of the driving gear 542, four L-shaped connecting blocks are fixedly arranged on the lower end surface of the bearing tray 544 in a circumferential direction, the other ends of the four L-shaped connecting blocks are fixedly connected to the lower end surface of the No. 2 electric slider, a supporting block 545 is fixedly arranged symmetrically on the front and rear sides of the lower end surface of the bearing tray 544, V-shaped plates 546 are symmetrically arranged on the left and right side walls of the two supporting blocks 545, and the top ends of the two V-shaped plates 546 located on the same supporting block 545 are connected to the same support block 545. The left and right side walls of the two support blocks 545 are symmetrically provided with connecting plates 547 through a pin shaft for rotation connection. The top ends of the two connecting plates 547 on the same support block 545 are also rotatably connected through a pin shaft. The V-shaped plate 546 is located above the connecting plate 547, and the corners of the two V-shaped plates 546 are opposite to each other. The outer wall of the threaded screw 543 is spirally provided with a connecting gasket along the left and right directions. The upper end surface of the connecting gasket and the left and right sides of the threaded screw 543 are symmetrically provided with waist-shaped blocks 548. The two waist-shaped blocks 548 are connected through a pin shaft, and the waist-shaped block 548 and the connecting gasket are fixedly connected. A rocker rod 549 is rotatably provided between the two waist-shaped blocks 548, and the ends of the two rocker rods 549 are hinged to the corresponding corners of the V-shaped plate 546.

[0042] Please refer to Figure 5 and Figure 6 The clamping assembly 55 includes two clamping blocks 551 symmetrically distributed front and back, the clamping blocks 551 are arranged between the left and right V-shaped plates 546, and the two clamping blocks 551 are respectively fixedly connected to their corresponding V-shaped plates 546 and the connecting plate 547, a rectangular groove is provided on the outer wall of the two clamping blocks 551 on the side close to each other, two compression springs distributed up and down are fixedly provided inside the two rectangular grooves, and the two compression springs on the same side are jointly fixed with an arc clamping plate 552 with a circular arc groove on the outer wall, and the clamping parts of the two arc clamping plates 552 are both provided with electromagnets.

[0043] Please refer to Figure 7 The auxiliary component 56 includes a rack 561 symmetrically and slidably arranged on the lower end surface of the second electric slider, the two racks 561 are meshed with the driving gear 542, and a rectangular block 562 is fixedly arranged on the side away from the lower end surfaces of the two racks 561, and the lower end surfaces of the two rectangular blocks 562 are both provided with auxiliary clamping blocks 563 with sloped front and rear side walls through torsion springs, and a side wall where the two auxiliary clamping blocks 563 are close to each other is provided with a truncated cone groove 564 for auxiliary clamping of spherical weights and square weights.

[0044] Please refer to Figure 4 The diameters of the two truncated cone grooves 564 gradually decrease from the side closer to each other to the side farther away from each other.

[0045] When it is necessary to clamp and fix the heavy object, the driving motor 541 is started to drive the threaded screw 543 to rotate. When the threaded screw 543 rotates, it drives the connecting gasket and the two waist-shaped blocks 548 to gradually move upward. The two waist-shaped blocks 548 drive the rocker rod 549 to move upward synchronously, so that the rocker rod 549 synchronously pulls the V-shaped plates 546 on both sides gradually closer, and then drives the two clamping blocks 551 to approach each other until the arc-shaped clamping plate 552 clamps and fixes the heavy object. Finally, the power supply of the electromagnet on the end face of the arc-shaped clamping plate 552 is turned on to further clamp and fix the heavy object to ensure that the heavy object will not fall.

[0046] It should be noted that the arc-shaped clamping plate 552 is configured as a shell and inserted into the inside of the rectangular groove. The two ends of the compression spring are fixedly connected to the inner wall of the rectangular groove and the inner wall of the shell respectively. The arc-shaped clamping plate 552 can ensure the stability of clamping heavy objects through the rigid support between the shell and the clamping block 551.

[0047] When the driving motor 541 rotates, it will drive the active gear 542 to rotate and mesh with the racks 561 on both sides, so that the racks 561 on both sides move towards each other and gradually approach each other. After the arc-shaped clamping plates 552 initially clamp and fix the weight, the compression springs set on the side walls away from the two arc-shaped clamping plates 552 can continue to tighten the weight. At this time, the auxiliary clamping blocks 563 on both sides cover the weight from both sides through the truncated cone grooves 564, thereby completing the auxiliary clamping work of the weight.

[0048] It should be noted that the two rectangular blocks 562 and the two auxiliary clamping blocks 563 are hinged by torsion springs, and the front and rear side walls of the two auxiliary clamping blocks 563 are provided with slopes, which can ensure that when auxiliary clamping of heavy objects is performed, the torsion springs and the slopes can push the auxiliary clamping blocks 563 to both sides and get stuck in the truncated cone grooves 564. At the same time, the diameter of the truncated cone grooves 564 is larger than the diameters of the spherical weights and the square weights, which can ensure that after the arc-shaped clamping plate 552 releases the weight, the weight will fall to the safety net 3 under the action of gravity.

[0049] When the weight is completely clamped and fixed, the hydraulic telescopic cylinder 43 is controlled to extend, thereby driving the weight to move upward to the test height, and then the power supply of the electromagnet on the arc clamping plate 552 is disconnected and the driving motor 541 is controlled to drive the threaded screw 543 to rotate in the opposite direction. When the threaded screw 543 rotates in the opposite direction, the connecting gasket and the two waist-shaped blocks 548 gradually move downward, and the two waist-shaped blocks 548 drive the swing rod 549 to move downward synchronously, so that the swing rod 549 synchronously pushes the V-shaped plate 546 to both sides, so that the two V-shaped plates 546 gradually move away from each other. At this time, the clamping force of the V-shaped plate 546 on the weight disappears, and then the weight pushes the auxiliary clamping blocks 563 to both sides by its own weight, and finally falls freely to the safety net 3 with gravity, and observes whether the safety net 3 is damaged to determine whether it meets the detection requirements.

[0050] It should be noted that when the dynamic bearing capacity of the heavy objects in the safety net 3 on one side is tested, the heavy objects in the safety net 3 on the other side remain stationary to test the static bearing capacity of the safety net 3. At the same time, the positions of the two heavy objects need to be changed during the testing process. After the two safety nets 3 have been tested for a period of time, the dynamic and static tests are exchanged to ensure the accuracy of the test results.

[0051] Please refer to Figure 2 A shock-absorbing cushion 13 is placed inside the rectangular base 1 and below the support bracket 2 .

[0052] When the dynamic pressure-bearing performance of the safety net 3 is tested, if the pressure-bearing performance of the safety net 3 is poor during the test, it will be torn and damaged by the impact force when the heavy object falls. The provided shock-absorbing pad 13 can support and reduce the shock of the heavy object that breaks through the safety net 3, so that it will not directly contact the ground and cause damage.

[0053] During the specific work: S1: manually hang the safety net 3 on several hooks, and make the safety net 3 taut and straight, press the partition 21 down and connect it into the inside of the support frame 2, and then use two bolts to screw into the threaded grooves of the front and rear inverted L-shaped blocks 12 respectively, so that the two inverted L-shaped blocks 12 are fixedly connected to the front and rear ends of the partition 21. At this time, the crossbeam and the partition 21 clamp the safety net 3 and separate it into two test areas, and then place the spherical weights and square weights in the two test areas of the safety net 3.

[0054] S2: Control the electric slider on the support frame 41 and the second slide rail 53 to slide to above the safety flat net 3 and the heavy object that need to be dynamically detected, and then control the hydraulic telescopic cylinder 43 to retract and drive the clamping block 551 to approach the heavy object.

[0055] S3: Start the driving motor 541 and rotate the threaded screw 543 to drive the connecting gasket and the waist-shaped block 548 to move upward, and pull the V-shaped plate 546 through the two rocker rods 549 respectively, so that the clamping blocks 551 and the arc-shaped clamping plates 552 on both sides gradually approach each other and clamp the heavy object. At the same time, the output shaft of the driving motor 541 rotates to drive the active gear 542 to engage with the racks 561 on both sides, so that the auxiliary clamping blocks 563 approach each other, thereby completing the covering of the heavy object.

[0056] S4: After the clamping work is completed, the hydraulic telescopic cylinders 43 on both sides are controlled to extend to drive the weight to move upward to the test height, and then the power supply of the electromagnet on the arc clamping plate 552 is disconnected and the driving motor 541 is controlled to drive the threaded screw 543 to rotate in the opposite direction. When the threaded screw 543 rotates in the opposite direction, the connecting gasket and the two waist-shaped blocks 548 gradually move downward, and the two waist-shaped blocks 548 drive the swing rod 549 to move downward synchronously, so that the swing rod 549 synchronously pushes the V-shaped plate 546 to both sides, so that the two V-shaped plates 546 gradually move away from each other. At this time, the force of the V-shaped plate 546 to clamp the weight disappears, and then the weight pushes the auxiliary clamping blocks 563 to both sides by its own weight, and finally falls freely to the safety net 3 with gravity, and observes whether the safety net 3 is damaged. Repeat the above-mentioned detection steps, repeatedly clamp, lift, and release the weight on the same safety net 3 at different positions, so as to detect the dynamic pressure-bearing capacity of the safety net 3.

[0057] S5: When the dynamic bearing capacity of the safety net 3 on one side is being tested, the weight on the safety net 3 on the other side remains stationary to test the static bearing capacity of the safety net 3. After a period of static testing, the position of the weight is also changed so that the force application point changes. If the safety net 3 is damaged during the testing process, it is unqualified, otherwise it is qualified.

[0058] S6: After the safety net 3 has been tested for a period of time, the lifting mechanism 4 and the clamping mechanism 5 are controlled to alternately test the safety net 3, that is, the heavy object on the safety net 3 originally tested for dynamic pressure bearing capacity remains stationary, while the heavy object on the safety net 3 originally tested for static pressure bearing capacity is clamped, lifted and released. After the test is completed, observe whether the safety net 3 in the two test areas is damaged, so as to determine whether it is qualified.

[0059] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention. In addition, in the description of the present invention, unless otherwise specified, "multiple", "multiple roots", and "multiple groups" mean two or more.

[0060] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flexible braided safety net performance test device, comprising a rectangular base (1) with a first slide rail (11) symmetrically arranged on the upper end surface, a support frame (2) being arranged on the rectangular base (1), a safety net (3) being hung inside the support frame (2) via a plurality of hooks, a spherical weight and a square weight being placed on the safety net (3), a lifting mechanism (4) being slidably arranged in two first slide rails (11) of the rectangular base (1) via a first electric slider, and a clamping mechanism (5) being arranged between the two lifting mechanisms (4); The clamping mechanism (5) comprises a shaped frame (51) which is arranged between two lifting mechanisms (4), the opening of the shaped frame (51) faces downward, a first slide bar (52) is fixedly arranged on the left and right side walls inside the shaped frame (51) symmetrically in the front and back, a second slide rail (53) is arranged between the two first slide bars (52) and on the upper end surface inside the shaped frame (51), and a driving component (54), a clamping component (55) and an auxiliary component (56) for auxiliary clamping are arranged on the second slide rail (53) through a second electric slider; The driving assembly (54) comprises a driving motor (541) fixedly arranged inside the second electric slider, a driving gear (542) is fixedly sleeved on the outer wall of the output shaft of the driving motor (541), a threaded screw (543) is fixedly connected to the bottom end of the output shaft of the driving motor (541), a bearing tray (544) is arranged on the lower end surface of the driving gear (542), four L-shaped connecting blocks are fixedly arranged on the lower end surface of the bearing tray (544) in a circumferential direction, the other ends of the four L-shaped connecting blocks are fixedly connected to the lower end surface of the second electric slider, a supporting block (545) is fixedly arranged on the lower end surface of the bearing tray (544) symmetrically, and the left and right side walls of the two supporting blocks (545) are symmetrically arranged with V-shaped plates (546), and are located on the same supporting block ( The two V-shaped plates (546) on the support blocks (545) are rotatably connected by a pin shaft, and the left and right side walls of the two support blocks (545) are symmetrically provided with connecting plates (547). The two connecting plates (547) located on the same support block (545) are also rotatably connected by a pin shaft. The V-shaped plate (546) is located above the connecting plate (547), and the corners of the two V-shaped plates (546) are opposite to each other. The outer wall of the threaded screw (543) is spirally provided with a connecting gasket, and the upper end surface of the connecting gasket is symmetrically provided with a waist-shaped block (548) located on the left and right sides of the threaded screw (543). The two waist-shaped blocks (548) are connected by a pin shaft, and the waist-shaped block (548) and the connecting gasket are fixedly connected. A swing rod (549) is rotatably provided between the two waist-shaped blocks (548). The ends of the two swing rods (549) are hinged to the corresponding corners of the V-shaped plate (546), and the clamping assembly (55) is arranged at the bottom end of the V-shaped plate (546).

2. A flexible braided safety flat net performance test device according to claim 1, characterized in that: The clamping assembly (55) comprises two clamping blocks (551) symmetrically distributed front and back, the clamping blocks (551) are arranged between the left and right V-shaped plates (546), and the two clamping blocks (551) are respectively fixedly connected to their corresponding V-shaped plates (546) and connecting plates (547), a rectangular groove is provided on the outer wall of the two clamping blocks (551) close to each other, two compression springs distributed up and down are fixedly arranged inside the two rectangular grooves, and the two compression springs on the same side are jointly fixed with an arc clamping plate (552) with a circular arc groove on the outer wall, and the clamping parts of the two arc clamping plates (552) are both provided with electromagnets.

3. A flexible braided safety flat net performance test device according to claim 1, characterized in that: The auxiliary component (56) comprises a rack (561) symmetrically and slidably arranged on the lower end surface of the second electric slider, the two racks (561) are meshed with the driving gear (542), and a rectangular block (562) is fixedly arranged on the side away from the lower end surfaces of the two racks (561), and the lower end surfaces of the two rectangular blocks (562) are both provided with auxiliary clamping blocks (563) with sloped front and rear side walls through torsion springs, and a truncated cone groove (564) for auxiliary clamping of spherical weights and square weights is opened on the side wall where the two auxiliary clamping blocks (563) are close to each other.

4. A flexible braided safety flat net performance test device according to claim 1, characterized in that: The lifting mechanism (4) comprises a support frame (41) arranged at the upper end of a No. 1 electric slider, and a slide groove (411) is provided on the opposite sides of the left and right support frames (41), and a No. 2 slide bar (42) is fixedly arranged in the slide groove (411) in a front-to-back symmetrical manner, and the two ends of the No. 2 slide bar (42) are respectively fixedly connected to the upper and lower end surfaces of the slide groove (411), and a hydraulic telescopic cylinder (43) is vertically arranged on the lower end surface inside the slide groove (411), and a square slide bar (44) is slidably arranged on the outer walls of the two No. 2 slide bars (42) on the same side, and the lower end surface of the square slide bar (44) is fixedly connected to the telescopic section of the hydraulic telescopic cylinder (43).

5. A flexible braided safety flat net performance test device according to claim 1, characterized in that: A partition plate (21) is fixedly arranged at the center of the support frame (2) along the front-rear direction.

6. A flexible braided safety flat net performance test device according to claim 1, characterized in that: A shock-absorbing cushion (13) is placed inside the rectangular base (1) and below the support frame (2).

7. A flexible braided safety flat net performance test device according to claim 1, characterized in that: The outer walls of the spherical weights and the square weights on the two safety flat nets (3) are both provided with anti-slip grooves for increasing friction and facilitating clamping.

8. A flexible braided safety flat net performance test device according to claim 3, characterized in that: The diameters of the two truncated cone grooves (564) gradually decrease from the side closer to each other to the side farther away from each other.

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