Trampoline impact testing device

Abstract

The utility model discloses a trampoline impact test device, and aims to overcome the defects that the existing trampoline impact test cannot simulate the free falling state of a human body in the use process of a trampoline, and the accuracy of measured data is poor. The device comprises a test frame and an impact bag, a lifting seat is installed on the test frame, a lifting rope is connected between the lifting seat and the impact bag, the impact bag is hung above a trampoline, the lifting seat is connected with a lifting mechanism, and the lifting mechanism and the lifting seat are arranged in a clutch mode. The trampoline impact test device can simulate the free falling state of a human body to carry out impact test on the trampoline, and test data are closer to data of an actual use state.

Description

Technical Field

[0001] The utility model relates to the technical field of trampoline testing, and more specifically, to a trampoline impact testing device. Background Art

[0002] During the production process of trampolines, impact tests are required to ensure that the products meet the requirements. Currently, there is no professional testing equipment on the market. In many cases, the performance of trampolines is tested by repeatedly pushing with a cylinder. This method cannot simulate the state of a human body falling freely during the use of a trampoline, and the measured data is not accurate. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings, the utility model provides a trampoline impact test device, which can simulate the free fall state of a human body to perform an impact test on a trampoline, and the test data is closer to the data of the actual use state.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a trampoline impact testing device, including a test frame and an impact bag, a lifting seat is installed on the test frame, a lifting rope is connected between the lifting seat and the impact bag, the impact bag is hung above the trampoline, the lifting seat is connected to a lifting mechanism, and the lifting mechanism and the lifting seat are clutched.

[0005] During the trampoline test, place the trampoline under the impact bag, and the lifting mechanism pulls the lifting seat downward, so that the lifting rope pulls the impact bag to a high place, and then the lifting mechanism separates from the lifting seat. The lifting mechanism loses the constraint on the lifting seat, and under the action of gravity, the impact bag falls freely onto the trampoline to perform an impact test on the trampoline. The trampoline impact test device can simulate the free fall state of the human body to perform an impact test on the trampoline, and the test data is closer to the data in actual use.

[0006] Preferably, a winch is installed on the test frame, a movable pulley is installed on the lifting seat, and the lifting rope is connected to the winch after passing around the movable pulley.

[0007] The winch winds up the suspension rope to adjust the height position of the impact bag, simulating the impact of free fall from different heights on the trampoline.

[0008] Preferably, a hanging wheel is installed on the test frame above the impact bag, and the hanging rope is connected to the impact bag after passing around the hanging wheel.

[0009] The lifting rope is wound around the hanging wheel to ensure the reliable lifting of the impact bag.

[0010] Preferably, a slide rail is installed on the test frame, a slider matched with the slide rail is provided on the lifting seat, and the slider is slidably connected to the slide rail.

[0011] During the lifting and lowering process of the lifting seat, the slider slides along the slide rail smoothly and reliably.

[0012] Preferably, the lifting mechanism comprises a piston cylinder and a suction cup, wherein the suction cup is mounted on the telescopic rod of the piston cylinder, and an electromagnet is mounted on the lifting seat, and the electromagnet is energized to engage with the suction cup.

[0013] The telescopic rod of the piston cylinder extends upward to make the suction cup close to the electromagnet. After the electromagnet is powered on, it is sucked together with the suction cup. The telescopic rod of the piston cylinder retracts downward to pull the lifting seat downward, so that the impact bag is lifted upward. After it is in place, the electromagnet is powered off, the suction cup is separated from the electromagnet, and under the action of gravity, the impact bag falls freely to perform an impact test on the trampoline.

[0014] Preferably, a support is installed on the test frame, a connecting plate is arranged at the lower part of the support, and the piston cylinder is installed on the connecting plate.

[0015] The piston cylinder is installed on the connecting plate on the support, and the connection is convenient and reliable.

[0016] Preferably, a limit plate is provided on the upper part of the support, and a buffer is installed on the limit plate, so that the buffer can buffer the lifting seat.

[0017] When the lifting seat moves upward to the limit position, the buffer on the limit plate plays a buffering role for the lifting seat.

[0018] Preferably, the test frame includes a crossbeam and a support body connected to both ends of the crossbeam, the support body is a triangular structure, rollers and legs are installed at the lower end of the support body, and the legs are threadedly connected to the support body to adjust the support height.

[0019] The test frame is composed of a crossbeam connected between two triangular supports, and has a stable structure. The setting of the rollers facilitates the movement of the test frame, and the setting of the support legs facilitates the stable support of the test frame. Moreover, the support legs can adjust the support height to ensure the stability of the support.

[0020] Preferably, a slide is provided on the test frame, the slide and the hanging wheel are provided correspondingly, the slide can slide laterally along the test frame to adjust the position, and the hanging wheel is installed on the slide.

[0021] The hanging wheel is installed on a sliding seat of a sliding arrangement, and can adjust the position of the impact bag, thereby realizing the impact test of different positions of the trampoline.

[0022] Preferably, a protective seat is installed on the lifting seat, the protective seat is installed on the lifting seat for transverse sliding, a suction block is installed on the protective seat, a reset spring is installed between the protective seat and the lifting seat, and a hook is set on the protective seat; the electromagnet is energized to attract the suction block so that the hook is close to the edge of the lower surface of the suction cup.

[0023] When the electromagnet is powered on and the suction cup is attracted, the suction block on the protective seat is attracted, so that the protective seat moves toward the suction cup, and the hook on the protective seat is close to the edge of the lower surface of the suction cup, providing secondary protection for the suction cup. When the gravity of the impact bag is too large, resulting in the suction force between the suction cup and the electromagnet being insufficient, the edge of the suction cup is supported on the hook to prevent the suction cup from separating from the electromagnet, thereby ensuring the stability of the connection between the suction cup and the lifting seat. When the electromagnet is powered off, the protective seat returns to its original position under the action of the reset spring, and the hook separates from the suction cup, ensuring that the suction cup can be separated from the lifting seat, allowing the impact bag to fall freely.

[0024] Compared with the prior art, the utility model has the following beneficial effects: (1) the trampoline impact test device can simulate the free fall state of a human body to perform an impact test on a trampoline, and the test data is closer to the data of the actual use state; (2) the impact height of the impact bag can be adjusted to simulate the impact of free fall at different heights on the trampoline; (3) the lateral position of the impact bag can be adjusted, so as to perform impact tests on different positions of the trampoline. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the utility model;

[0026] Figure 2 It is a structural schematic diagram of the lifting mechanism of the utility model;

[0027] Figure 3 This is a schematic diagram of the connection of the hanging wheel of Example 2 of the utility model;

[0028] Figure 4 This is a schematic diagram of the connection between the suction cup and the lifting seat of Example 3 of the utility model;

[0029] In the figure: 1, test frame, 2, impact bag, 3, beam, 4, support body, 5, roller, 6, support leg, 7, lifting seat, 8, lifting rope, 9, hanging wheel, 10, slide seat, 11, slide groove, 12, fastening screw, 13, winch, 14, movable pulley, 15, fixed pulley, 16, slide rail, 17, slider, 18, piston cylinder, 19, suction cup, 20, electromagnet, 21, protective seat, 22, suction block, 23, reset spring, 24, hook, 25, support, 26, connecting plate, 27, limit plate, 28, buffer, 29, trampoline. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0031] Example 1: A trampoline impact test device (see attached Figure 1 , Attachment Figure 2), including a test frame 1 and an impact bag 2, the test frame 1 includes a crossbeam 3 and a support body 4 connected to both ends of the crossbeam 3, the crossbeam 3 is an I-beam, the support body 4 is a triangular structure, the lower end of the support body 4 is equipped with a roller 5 and a support leg 6, the upper corner of the support body 4 is connected to the crossbeam 3, and the two corners of the lower end of the support body 4 are equipped with rollers 5 and support legs 6. The support legs 6 are threadedly connected to the support body 4 to adjust the support height. A lifting seat 7 is installed on the test frame 1, and a lifting rope 8 is connected between the lifting seat 7 and the impact bag 2. The impact bag 2 is suspended above the trampoline 29, and the lifting seat 7 is connected to the lifting mechanism, and the lifting mechanism and the lifting seat 7 are clutched.

[0032] A hanging wheel 9 is installed above the impact bag 2 on the test frame 1. The hanging rope 8 is connected to the impact bag 2 after passing through the hanging wheel 9. The impact bag 2 is a sandbag. The hanging rope 8 is wound around the hanging wheel 9 to ensure reliable lifting of the impact bag 2. A winch 13 is installed on the test frame 1, and a movable pulley 14 is installed on the lifting seat 7. The hanging rope 8 is connected to the winch 13 after passing through the movable pulley 14. Two fixed pulleys 15 are installed above the lifting seat 7 on the test frame 1. After the hanging rope 8 is pulled out from the winch 13, it passes through the first fixed pulley 15, then passes through the movable pulley 14 on the lifting seat 7, then passes through the second fixed pulley 15, and finally passes through the hanging wheel 9. The winch 13 winds up the hanging rope 8, thereby adjusting the height position of the impact bag 2 to simulate the impact of free fall at different heights on the trampoline 29.

[0033] The test stand 1 is provided with a slide rail 16, which is arranged vertically. The lifting seat 7 is provided with a slider 17 adapted to the slide rail 16, and the slider 17 is slidably connected to the slide rail 16. Guide grooves are arranged on both side walls of the slide rail 16, and guide bars are arranged on both side walls of the slider 17, and the guide bars are adapted to be connected to the guide grooves, so as to realize reliable sliding of the slider 17 and the slide rail 16, and prevent the slider 17 from being separated from the slide rail 16. During the lifting and lowering movement of the lifting seat 7, the slider 17 slides along the slide rail 16 steadily and reliably.

[0034] The lifting mechanism includes a piston cylinder 18 and a suction cup 19. The piston cylinder 18 can be a pneumatic cylinder or an electric cylinder. The suction cup 19 is installed on the telescopic rod of the piston cylinder 18. The electromagnet 20 is installed on the lifting seat 7. The electromagnet 20 is energized to attract the suction cup 19. A support 25 is installed on the test frame 1, and the slide rail 16 is fixedly installed on the support 25. A connecting plate 26 is arranged at the lower part of the support 25, and the piston cylinder 18 is installed on the connecting plate 26. A limit plate 27 is arranged at the upper part of the support 25, and a buffer 28 is installed on the limit plate 27. The buffer 28 realizes the buffering of the lifting seat 7. When the lifting seat 7 moves upward to the limit position, the buffer 28 on the limit plate 27 plays a buffering role for the lifting seat 7. The telescopic rod of the piston cylinder 18 extends upward to make the suction cup 19 and the electromagnet 20 close to each other. After the electromagnet 20 is energized, it is attracted to the suction cup 19. The telescopic rod of the piston cylinder 18 retracts downward, pulling the lifting seat 7 downward, so that the impact bag 2 is lifted upward. After it is in place, the electromagnet 20 is powered off, the suction cup 19 is separated from the electromagnet 20, and under the action of gravity, the impact bag 2 falls freely to perform an impact test on the trampoline 29.

[0035] When the trampoline 29 is tested, the trampoline 29 is placed under the impact bag 2, and the height position of the support leg 6 at the lower end of the test frame 1 is adjusted to make the test frame 1 be placed stably. The winch 13 is operated to adjust the height position of the impact bag 2 to ensure that the impact bag 2 can impact the trampoline 29 after it falls. The telescopic rod of the piston cylinder 18 of the lifting mechanism moves upward, so that the suction cup 19 and the electromagnet 20 are close to each other. After the electromagnet 20 is powered on, it is sucked together with the suction cup 19. Then the telescopic rod of the piston cylinder 18 retracts downward, and the lifting seat 7 is pulled downward, so that the impact bag 2 is lifted up to a high place. After the impact bag 2 is in place, the electromagnet 20 is powered off, and the suction cup 19 is separated from the electromagnet 20. Under the action of gravity, the impact bag 2 falls freely to perform an impact test on the trampoline 29. After waiting for a certain period of time, the above process is repeated to realize the impact test of the trampoline 29 equipment. The impact test device of the trampoline 29 can simulate the free fall state of the human body to perform an impact test on the trampoline 29, and the test data is closer to the data of the actual use state.

[0036] Example 2: A trampoline impact test device (see attached Figure 3 ), including a test frame 1 and an impact bag 2, the test frame 1 includes a crossbeam 3 and a support body 4 connected to both ends of the crossbeam 3, the crossbeam 3 is an I-beam, the support body 4 is a triangular structure, the lower end of the support body 4 is equipped with a roller 5 and a support leg 6, the upper corner of the support body 4 is connected to the crossbeam 3, and the two corners of the lower end of the support body 4 are equipped with rollers 5 and support legs 6. The support legs 6 are threadedly connected to the support body 4 to adjust the support height. A lifting seat 7 is installed on the test frame 1, and a lifting rope 8 is connected between the lifting seat 7 and the impact bag 2. The impact bag 2 is suspended above the trampoline 29, and the lifting seat 7 is connected to the lifting mechanism, and the lifting mechanism and the lifting seat 7 are clutched.

[0037] A hanging wheel 9 is installed above the impact bag 2 on the test frame 1, and a hanging rope 8 is connected to the impact bag 2 after passing through the hanging wheel 9. The impact bag 2 is a sandbag. The hanging rope 8 is wound around the hanging wheel 9 to ensure reliable lifting of the impact bag 2.

[0038] The test frame 1 is provided with a slide 10, and the slide 10 and the hanging wheel 9 are provided correspondingly. The slide 10 can slide horizontally along the test frame 1 to adjust the position, and the hanging wheel 9 is installed on the slide 10. An inverted T-shaped slide groove 11 is provided on the slide 10, and the slide 10 is slidably connected to the crossbeam 3 through the slide groove 11. The slide 10 is connected with a fastening screw 12, and the end of the fastening screw 12 abuts against the crossbeam 3. The hanging wheel 9 is installed on the slide 10 that is slidably provided, and can adjust the position of the impact bag 2, so as to realize the impact test of different positions of the trampoline 29.

[0039] A winch 13 is installed on the test frame 1, a movable pulley 14 is installed on the lifting seat 7, and the lifting rope 8 is connected to the winch 13 after passing through the movable pulley 14. Two fixed pulleys 15 are installed above the lifting seat 7 on the test frame 1. After the lifting rope 8 is pulled out from the winch 13, it passes through the first fixed pulley 15, then passes through the movable pulley 14 on the lifting seat 7, then passes through the second fixed pulley 15, and finally passes through the hanging wheel 9. The winch 13 winds up the lifting rope 8, thereby adjusting the height position of the impact bag 2 to simulate the impact of free fall at different heights on the trampoline 29.

[0040] The test stand 1 is provided with a slide rail 16, which is arranged vertically. The lifting seat 7 is provided with a slider 17 adapted to the slide rail 16, and the slider 17 is slidably connected to the slide rail 16. Guide grooves are arranged on both side walls of the slide rail 16, and guide bars are arranged on both side walls of the slider 17, and the guide bars are adapted to be connected to the guide grooves, so as to realize reliable sliding of the slider 17 and the slide rail 16, and prevent the slider 17 from being separated from the slide rail 16. During the lifting and lowering movement of the lifting seat 7, the slider 17 slides along the slide rail 16 steadily and reliably.

[0041] The lifting mechanism includes a piston cylinder 18 and a suction cup 19. The piston cylinder 18 can be a pneumatic cylinder or an electric cylinder. The suction cup 19 is installed on the telescopic rod of the piston cylinder 18. The electromagnet 20 is installed on the lifting seat 7. The electromagnet 20 is energized to attract the suction cup 19. A support 25 is installed on the test frame 1, and the slide rail 16 is fixedly installed on the support 25. A connecting plate 26 is arranged at the lower part of the support 25, and the piston cylinder 18 is installed on the connecting plate 26. A limit plate 27 is arranged at the upper part of the support 25, and a buffer 28 is installed on the limit plate 27. The buffer 28 realizes the buffering of the lifting seat 7. When the lifting seat 7 moves upward to the limit position, the buffer 28 on the limit plate 27 plays a buffering role for the lifting seat 7. The telescopic rod of the piston cylinder 18 extends upward to make the suction cup 19 and the electromagnet 20 close to each other. After the electromagnet 20 is energized, it is attracted to the suction cup 19. The telescopic rod of the piston cylinder 18 retracts downward, pulling the lifting seat 7 downward, so that the impact bag 2 is lifted upward. After it is in place, the electromagnet 20 is powered off, the suction cup 19 is separated from the electromagnet 20, and under the action of gravity, the impact bag 2 falls freely to perform an impact test on the trampoline 29.

[0042] When the trampoline 29 is tested, the trampoline 29 is placed under the impact bag 2, and the height position of the support leg 6 at the lower end of the test frame 1 is adjusted to ensure that the test frame 1 is placed stably. The winch 13 is operated to adjust the height position of the impact bag 2 to ensure that the impact bag 2 can impact the trampoline 29 after falling. The horizontal sliding slide 10 adjusts the horizontal position of the impact bag 2. The telescopic rod of the piston cylinder 18 of the lifting mechanism moves upward, so that the suction cup 19 and the electromagnet 20 are close to each other. After the electromagnet 20 is powered on, it is attracted to the suction cup 19. Then the telescopic rod of the piston cylinder 18 retracts downward, and the lifting seat 7 is pulled downward, so that the impact bag 2 is lifted up to a high place. After the impact bag 2 is in place, the electromagnet 20 is powered off, and the suction cup 19 is separated from the electromagnet 20. Under the action of gravity, the impact bag 2 falls freely to perform an impact test on the trampoline 29. After waiting for a certain period of time, the above process is repeated to achieve the impact test of the trampoline 29 equipment. The impact test device of the trampoline 29 can simulate the free fall state of the human body to perform an impact test on the trampoline 29, and the test data is closer to the data of the actual use state.

[0043] Example 3: A trampoline impact test device (see attached Figure 3 , Attachment Figure 4 ), including a test frame 1 and an impact bag 2, the test frame 1 includes a crossbeam 3 and a support body 4 connected to both ends of the crossbeam 3, the crossbeam 3 is an I-beam, the support body 4 is a triangular structure, the lower end of the support body 4 is equipped with a roller 5 and a support leg 6, the upper corner of the support body 4 is connected to the crossbeam 3, and the two corners of the lower end of the support body 4 are equipped with rollers 5 and support legs 6. The support legs 6 are threadedly connected to the support body 4 to adjust the support height. A lifting seat 7 is installed on the test frame 1, and a lifting rope 8 is connected between the lifting seat 7 and the impact bag 2. The impact bag 2 is suspended above the trampoline 29, and the lifting seat 7 is connected to the lifting mechanism, and the lifting mechanism and the lifting seat 7 are clutched.

[0044] A hanging wheel 9 is installed above the impact bag 2 on the test frame 1, and a hanging rope 8 is connected to the impact bag 2 after passing through the hanging wheel 9. The impact bag 2 is a sandbag. The hanging rope 8 is wound around the hanging wheel 9 to ensure reliable lifting of the impact bag 2.

[0045] The test frame 1 is provided with a slide 10, and the slide 10 and the hanging wheel 9 are provided correspondingly. The slide 10 can slide horizontally along the test frame 1 to adjust the position, and the hanging wheel 9 is installed on the slide 10. An inverted T-shaped slide groove 11 is provided on the slide 10, and the slide 10 is slidably connected to the crossbeam 3 through the slide groove 11. The slide 10 is connected with a fastening screw 12, and the end of the fastening screw 12 abuts against the crossbeam 3. The hanging wheel 9 is installed on the slide 10 that is slidably provided, and can adjust the position of the impact bag 2, so as to realize the impact test of different positions of the trampoline 29.

[0046] A winch 13 is installed on the test frame 1, a movable pulley 14 is installed on the lifting seat 7, and the lifting rope 8 is connected to the winch 13 after passing through the movable pulley 14. Two fixed pulleys 15 are installed above the lifting seat 7 on the test frame 1. After the lifting rope 8 is pulled out from the winch 13, it passes through the first fixed pulley 15, then passes through the movable pulley 14 on the lifting seat 7, then passes through the second fixed pulley 15, and finally passes through the hanging wheel 9. The winch 13 winds up the lifting rope 8, thereby adjusting the height position of the impact bag 2 to simulate the impact of free fall at different heights on the trampoline 29.

[0047] The test stand 1 is provided with a slide rail 16, which is arranged vertically. The lifting seat 7 is provided with a slider 17 adapted to the slide rail 16, and the slider 17 is slidably connected to the slide rail 16. Guide grooves are arranged on both side walls of the slide rail 16, and guide bars are arranged on both side walls of the slider 17, and the guide bars are adapted to be connected to the guide grooves, so as to realize reliable sliding of the slider 17 and the slide rail 16, and prevent the slider 17 from being separated from the slide rail 16. During the lifting and lowering movement of the lifting seat 7, the slider 17 slides along the slide rail 16 steadily and reliably.

[0048] The lifting mechanism includes a piston cylinder 18 and a suction cup 19. The piston cylinder 18 can be a pneumatic cylinder or an electric cylinder. The suction cup 19 is installed on the telescopic rod of the piston cylinder 18. An electromagnet 20 is installed on the lifting seat 7. The electromagnet 20 is energized and attracted to the suction cup 19.

[0049] A protective seat 21 is installed on the lifting seat 7, and the protective seat 21 is installed on the lifting seat 7 in a horizontal sliding manner. A suction block 22 is installed on the protective seat 21, and a reset spring 23 is installed between the protective seat 21 and the lifting seat 7. A hook 24 is arranged on the protective seat 21; the electromagnet 20 is energized to attract the suction block 22 so that the hook 24 is close to the edge of the lower surface of the suction cup 19. When the electromagnet 20 is energized and attracted to the suction cup 19, the suction block 22 on the protective seat 21 is attracted, so that the protective seat 21 moves toward the suction cup 19, and the hook 24 on the protective seat 21 is close to the edge of the lower surface of the suction cup 19, which provides secondary protection for the suction cup 19. When the gravity of the impact bag 2 is too large, resulting in the suction force between the suction cup 19 and the electromagnet 20 being insufficient, the edge of the suction cup 19 is supported on the hook 24 to prevent the suction cup 19 from separating from the electromagnet 20, thereby ensuring the stability of the connection between the suction cup 19 and the lifting seat 7. When the electromagnet 20 is powered off, the protection seat 21 returns to its original position under the action of the reset spring 23, and the hook 24 separates from the suction cup 19, ensuring that the suction cup 19 can be separated from the lifting seat 7, so that the impact bag 2 falls freely.

[0050] The support 25 is installed on the test frame 1, and the slide rail 16 is fixedly installed on the support 25. A connecting plate 26 is arranged at the lower part of the support 25, and the piston cylinder 18 is installed on the connecting plate 26. A limit plate 27 is arranged at the upper part of the support 25, and a buffer 28 is installed on the limit plate 27, and the buffer 28 realizes the buffering of the lifting seat 7. When the lifting seat 7 moves upward to the limit position, the buffer 28 on the limit plate 27 plays a buffering role on the lifting seat 7. The telescopic rod of the piston cylinder 18 extends upward to make the suction cup 19 and the electromagnet 20 close to each other. After the electromagnet 20 is energized, it is sucked together with the suction cup 19. The telescopic rod of the piston cylinder 18 retracts downward, pulling the lifting seat 7 downward, so that the impact bag 2 is lifted upward. After it is in place, the electromagnet 20 is powered off, and the suction cup 19 is separated from the electromagnet 20. Under the action of gravity, the impact bag 2 falls freely to perform an impact test on the trampoline 29.

[0051] When the trampoline 29 is tested, the trampoline 29 is placed under the impact bag 2, and the height position of the support leg 6 at the lower end of the test frame 1 is adjusted to ensure that the test frame 1 is placed stably. The winch 13 is operated to adjust the height position of the impact bag 2 to ensure that the impact bag 2 can impact the trampoline 29 after falling. The horizontal sliding slide 10 adjusts the horizontal position of the impact bag 2. The telescopic rod of the piston cylinder 18 of the lifting mechanism moves upward, so that the suction cup 19 and the electromagnet 20 are close to each other. After the electromagnet 20 is powered on, it is attracted to the suction cup 19. Then the telescopic rod of the piston cylinder 18 retracts downward, and the lifting seat 7 is pulled downward, so that the impact bag 2 is lifted up to a high place. After the impact bag 2 is in place, the electromagnet 20 is powered off, and the suction cup 19 is separated from the electromagnet 20. Under the action of gravity, the impact bag 2 falls freely to perform an impact test on the trampoline 29. After waiting for a certain period of time, the above process is repeated to achieve the impact test of the trampoline 29 equipment. The impact test device of the trampoline 29 can simulate the free fall state of the human body to perform an impact test on the trampoline 29, and the test data is closer to the data of the actual use state.

[0052] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A trampoline impact test device, characterized in that: It includes a test frame and an impact bag. A lifting seat is installed on the test frame. A lifting rope is connected between the lifting seat and the impact bag. The impact bag is hung above the trampoline. The lifting seat is connected to a lifting mechanism. The lifting mechanism and the lifting seat are clutched.

2. A trampoline impact testing device according to claim 1, characterized in that: A winch is installed on the test frame, a movable pulley is installed on the lifting seat, and the lifting rope is connected to the winch after passing around the movable pulley.

3. A trampoline impact testing device according to claim 1, characterized in that: A hanging wheel is installed above the impact bag on the test frame, and the hanging rope is connected to the impact bag after passing around the hanging wheel.

4. A trampoline impact testing device according to claim 1, characterized in that: A slide rail is installed on the test frame, a slider matched with the slide rail is arranged on the lifting seat, and the slider is slidably connected with the slide rail.

5. The trampoline impact testing device according to claim 1, characterized in that: The lifting mechanism comprises a piston cylinder and a suction cup. The suction cup is installed on the telescopic rod of the piston cylinder. An electromagnet is installed on the lifting seat. When the electromagnet is energized, it is attracted to the suction cup.

6. A trampoline impact testing device according to claim 5, characterized in that: A support is installed on the test frame, a connecting plate is arranged at the lower part of the support, and the piston cylinder is installed on the connecting plate.

7. A trampoline impact testing device according to claim 6, characterized in that: A limit plate is arranged on the upper part of the support, and a buffer is installed on the limit plate, so that the buffer can buffer the lifting seat.

8. A trampoline impact testing device according to any one of claims 1 to 7, characterized in that: The test frame includes a crossbeam and a support body connected to both ends of the crossbeam. The support body is a triangular structure. Rollers and legs are installed at the lower end of the support body. The legs are threadedly connected to the support body to adjust the support height.

9. The trampoline impact testing device according to claim 3, characterized in that: A slide is arranged on the test frame, and the slide and the hanging wheel are arranged correspondingly. The slide can slide laterally along the test frame to adjust the position, and the hanging wheel is installed on the slide.

10. The trampoline impact testing device according to claim 5, characterized in that: A protective seat is installed on the lifting seat, the protective seat is installed on the lifting seat in a transverse sliding manner, a suction block is installed on the protective seat, a reset spring is installed between the protective seat and the lifting seat, and a hook is arranged on the protective seat; the electromagnet is energized to attract the suction block so that the hook is close to the edge of the lower surface of the suction cup.

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