A roller shutter door opener life testing device

Abstract

The utility model relates to a kind of roller shutter door door opener life testing device, including rack, wherein the fixed assembly on the measured product is connected on rack, further include main shaft transmission assembly and magnetic powder brake, the rotation assembly on the measured product is connected with one end of main shaft transmission assembly, the output shaft of the magnetic powder brake is connected with the other end of main shaft transmission assembly, and the magnetic powder brake is electrically connected with frequency conversion power supply, the current of linear variation is output to magnetic powder brake in each test cycle by frequency conversion power supply, so that magnetic powder brake realizes different rotation damping to act on main shaft transmission assembly;This life testing device can make the damping of magnetic powder brake keep changing by the control of frequency conversion power supply, so that life test result is more close to actual use process, and test is more accurate.

Description

Technical Field

[0001] This utility model relates to the field of testing devices, specifically a life testing device for roller shutter door openers. Background Technology

[0002] Currently, the traditional method for testing the service life of roller shutter door openers involves installing the opener on the test door and then continuously operating it to achieve the purpose of service life testing. This method requires the opener to be installed high up on the roller shutter, necessitating frequent work at heights, increasing the risk of accidents, and is also cumbersome and inefficient. Therefore, the applicant published a roller shutter door opener simulation service life device (publication number CN210603959U) on May 22, 2020, for testing the service life of roller shutter door openers. However, the magnetic powder brake in this device can only generate a constant damping in a single test cycle to simulate the load generated by the weight of the roller shutter. During use, the load on the opener changes linearly according to the length of the roller shutter being rolled, thus affecting the accuracy of the service life test. Therefore, the applicant provides a new testing device solution for roller shutter door openers to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to solve the above-mentioned existing problems and provide a simple and reasonable roller shutter door opening machine life testing device, whose main function is to simulate the flexible load life test of a solid door.

[0004] A life testing device for a roller shutter door opener includes a frame, wherein a fixed component on the product under test is connected to the frame, and a main shaft drive assembly and a magnetic powder brake. One end of the main shaft drive assembly is connected to a rotating component on the product under test, and the output shaft of the magnetic powder brake is connected to the other end of the main shaft drive assembly. The magnetic powder brake is electrically connected to a frequency converter, which outputs a linearly varying current to the magnetic powder brake in each test cycle, thereby enabling the magnetic powder brake to apply different rotational damping to the main shaft drive assembly.

[0005] The objective of this utility model can also be achieved by the following technical measures: As a more specific embodiment, the main shaft transmission assembly includes a torque wheel, a transmission chain, a driven sprocket, and a transmission main shaft. The torque wheel is fixedly connected to the output shaft of the magnetic powder brake. One end of the transmission main shaft is connected to a rotating component on the product under test, and the other end is connected to the driven sprocket. The torque wheel has multiple teeth circumferentially arranged, and the transmission chain is wound between the torque wheel and the driven sprocket through the teeth.

[0006] As a further embodiment, the spindle drive assembly also includes a torque sensor, which has an input shaft and an output shaft. The output shaft is connected to a torque wheel, and the input shaft is connected to the output shaft of the magnetic powder brake.

[0007] As a further embodiment, the spindle drive assembly also includes a coupling, a portion of which is fixedly connected to the output shaft of the magnetic powder brake, and the other portion of which is fixedly connected to the input shaft of the torque sensor.

[0008] As a further embodiment, the frame is equipped with a test platform, and a support frame is mounted on the test platform. The support frame is equipped with an installation platform for mounting and fixing the product under test, and the frame is equipped with a drive device that can drive the installation platform to move vertically up and down.

[0009] As a further embodiment, the drive device includes a screw jack, which is installed on the bottom surface of the test platform. The passive screw of the screw jack is longitudinally connected to the bottom of the installation platform, and the active screw of the screw jack extends laterally out of the frame and is connected to a hand crank.

[0010] As a further solution, the drive spindle has a long flat key at one end corresponding to the driven sprocket, the driven sprocket has a sprocket keyway corresponding to the long flat keyway, and a locking hole is provided corresponding to the sprocket keyway. The fastening unit passes through the locking hole to press the long flat keyway, so that the driven sprocket is fixed at an adjustable depth on the drive spindle.

[0011] As a further embodiment, the input and output shafts of the torque sensor and the output shaft of the magnetic powder brake are provided with a flat key structure, and the torque wheel and the coupling are provided with a keyway structure that cooperates with the flat key structure.

[0012] As a further embodiment, a limiting plate is fixedly connected to the lower side of the corresponding torque wheel on the frame and is set on the same vertical plane. The limiting plate has a limiting arc edge that matches the curvature of the torque wheel, and the limiting arc edge is located on the outside of the transmission chain.

[0013] As a further embodiment, the frame is located below the test platform and forms a braking chamber, in which the magnetic powder brake, frequency converter, torque wheel, and torque sensor are mounted via brackets or bearings.

[0014] The beneficial effects of this utility model are as follows: This utility model discloses a life testing device for roller shutter door openers. This life testing device controls the output current through a frequency converter, enabling the damping of the magnetic powder brake to change linearly. It simulates the gradual decrease of the load on the opener during the opening process of the roller shutter door and the gradual increase of the load on the opener during the closing process of the roller shutter door, making the life test results more consistent with the actual use process and ensuring more accurate testing.

[0015] In addition, the life testing device has a small overall size, which greatly reduces the space occupied by traditional testing doors. Workers do not need to climb to high places to disassemble and assemble it. They can directly install the roller shutter door opener onto the device through simple operation. The operation is convenient and quick, the personal safety of workers is guaranteed, and the labor intensity of workers is reduced. The roller shutter door opener has a short running stroke, so the testing efficiency is greatly improved, and rapid testing is achieved. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one embodiment of the present invention.

[0017] Figure 2 This is an exploded structural diagram of the braking part in this utility model.

[0018] Figure 3 This is a partial structural schematic diagram of the life testing device in this utility model.

[0019] Figure 4 This is an exploded view of the passive sprocket and transmission shaft in this utility model. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] refer to Figures 1 to 4 As shown, a roller shutter door opener life testing device includes a frame 1, wherein a fixed component on the product under test A is connected to the frame 1. It also includes a main shaft drive assembly and a magnetic powder brake 2. One end of the main shaft drive assembly is connected to a rotating component on the product under test A, and the output shaft of the magnetic powder brake 2 is connected to the other end of the main shaft drive assembly. The magnetic powder brake 2 is electrically connected to a frequency converter 3. The frequency converter 3 outputs a linearly changing current to the magnetic powder brake 2 in each test cycle, so that the magnetic powder brake 2 can achieve different rotational damping on the main shaft drive assembly.

[0022] This life test device uses a frequency converter to control the output current, enabling the damping of the magnetic powder brake to change linearly. This simulates the gradual decrease in load on the door opener during the opening process and the gradual increase in load on the door opener during the closing process. This makes the life test results more consistent with actual use and ensures more accurate testing.

[0023] The main shaft transmission assembly includes a torque wheel 4, a transmission chain 5, a driven sprocket 6, and a transmission main shaft 7. The torque wheel 4 is fixedly connected to the output shaft of the magnetic powder brake 2. One end of the transmission main shaft 7 is connected to a rotating component on the product under test A, and the other end is connected to the driven sprocket 6. The torque wheel 4 has multiple circumferentially arranged chain teeth 41, and the transmission chain 5 is wound between the torque wheel 4 and the driven sprocket 6 through the chain teeth 41. In this structure, the passive sprocket 6 is located directly above the torsion wheel 4, allowing the transmission main shaft 7 and the magnetic powder brake 2 to be arranged vertically. The diameter of the torsion wheel 4 is larger than that of the passive sprocket 6, which reduces the number of rotations of the magnetic powder brake 2 during testing.

[0024] The main shaft transmission assembly also includes a torque sensor 8, which has an input shaft 81 and an output shaft 82. The output shaft 82 is connected to the torque wheel 4, and the input shaft 81 is connected to the output shaft of the magnetic powder brake 2. The torque sensor 8 can detect and display the torque value, rotational speed, and speed in real time.

[0025] The main shaft transmission assembly also includes a coupling 9. A part of the coupling 9 is fixedly connected to the output shaft of the magnetic powder brake 2, and the other part of the coupling 9 is fixedly connected to the input shaft 81 of the torque sensor 8. The torque sensor 8 and the magnetic powder brake 2 are connected through the coupling 9. While transmitting power, the coupling 9 can compensate for the misalignment of the two shafts, reduce the vibration of the mechanical transmission system, reduce the impact peak load, and also has a certain buffering and shock absorption performance.

[0026] The frame 1 is provided with a test platform 10, and a support frame 11 is installed on the test platform 10. The support frame 11 is provided with an installation platform 12 for installing and fixing the product under test A. The frame 1 is provided with a drive device that can drive the installation platform 12 to rise and fall vertically. Before the product A to be tested is secured to the mounting platform 12, the drive device drives the mounting platform 12 to descend, shortening the distance between the torque wheel 4 and the driven sprocket, and slackening the transmission chain 5. This helps the driven sprocket 6 and the transmission shaft 7 to connect to the product A under test. Afterward, the drive device drives the mounting platform 12 to rise, so that the transmission chain 5 can be taut between the torque wheel 4 and the driven sprocket, ensuring the operating efficiency of the life test device, reducing noise, and improving stability.

[0027] In addition, a display screen 20 is fixed on the installation platform 12. The display screen 20 is electrically connected to the frequency converter 3 and the torque sensor 8, and displays various test values ​​through the display screen.

[0028] Specifically: the driving device includes a screw jack 13, which is installed on the bottom surface of the test platform 10. The passive screw 131 of the screw jack 13 is longitudinally connected to the bottom of the mounting platform 12, and the active screw 132 of the screw jack 13 extends laterally out of the frame 1 and is connected to a hand crank 133. The tester drives the passive screw 131 by manually cranking the hand crank 133, thereby causing the mounting platform 12 to move the tested product A up and down.

[0029] The drive shaft 7 has a long flat key 71 at one end corresponding to the driven sprocket 6. The driven sprocket 6 has a sprocket keyway 61 corresponding to the long flat key 71, and a locking hole 62 is provided corresponding to the sprocket keyway 61. The fastening unit passes through the locking hole 62 to press the long flat key 71, so that the driven sprocket 6 is fixed at an adjustable depth on the drive shaft 7. When testing different products A, the left and right positions of the drive shaft 7 will be affected. By adjusting the connection of the driven sprocket 6 to the drive shaft 7, it can be ensured that the driven sprocket 6 and the torque wheel 4 are vertically aligned.

[0030] The input shaft 81 and output shaft 82 of the torque sensor 8, as well as the output shaft of the magnetic powder brake 2, are provided with a flat key structure 14. The torque wheel 4 and the coupling 9 are provided with a keyway structure 15 that cooperates with the flat key structure 14. The assembly of the flat key structure 14 and the keyway structure 15 is simple, can withstand large load capacity, achieve zero clearance in the rotation direction, transmit force accurately, and has smooth transmission, high transmission efficiency and long service life.

[0031] A limiting plate 16 is fixedly connected to the lower side of the torque wheel 4 on the frame 1, and is set on the same vertical plane. The limiting plate 16 has a limiting arc edge 161 that matches the curvature of the torque wheel 4. The limiting arc edge 161 is located on the outside of the transmission chain 5. The limiting plate 16 can prevent the transmission chain 5 from disengaging from the torque wheel 4 and can maintain the meshing state during the installation of the product under test A or during the test operation.

[0032] The frame 1 is located below the test platform 10 and forms a braking chamber 17. The magnetic powder brake 2, the frequency converter 3, and the torque sensor 8 are installed in the braking chamber 17 through the bracket 18. The torque wheel 4 is installed in the braking chamber 17 through the bearing 19. The braking structure is set in the lower part of the frame 1, making the life test device more regular.

[0033] In addition, several omnidirectional casters 21 are connected to the bottom of the frame 1, and a push rod 22 is provided on one side of the frame 1. The omnidirectional casters 21 and the push rod 22 make it easier to transport and move the entire life test device and make it more convenient to use.

[0034] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A life testing device for a roller shutter door opener, comprising a frame (1), wherein a fixing component on the product under test (A) is connected to the frame (1), characterized in that: It also includes a spindle drive assembly and a magnetic powder brake (2). One end of the spindle drive assembly is connected to the rotating assembly on the product under test (A). The output shaft of the magnetic powder brake (2) is connected to the other end of the spindle drive assembly. The magnetic powder brake (2) is electrically connected to a frequency converter (3). The frequency converter (3) outputs a linearly changing current to the magnetic powder brake (2) in each test cycle, so that the magnetic powder brake (2) can achieve different rotational damping on the spindle drive assembly.

2. The roller shutter door opener life testing device according to claim 1, characterized in that: The main shaft transmission assembly includes a torque wheel (4), a transmission chain (5), a driven sprocket (6), and a transmission main shaft (7). The torque wheel (4) is fixedly connected to the output shaft of the magnetic powder brake (2). One end of the transmission main shaft (7) is connected to the rotating component on the product under test (A), and the other end is connected to the driven sprocket (6). The torque wheel (4) has multiple chain teeth (41) arranged circumferentially. The transmission chain (5) is wound between the torque wheel (4) and the driven sprocket (6) through the chain teeth (41).

3. The roller shutter door opener life testing device according to claim 2, characterized in that: The main shaft transmission assembly also includes a torque sensor (8), which has an input shaft (81) and an output shaft (82). The output shaft (82) is connected to the torque wheel (4), and the input shaft (81) is connected to the output shaft of the magnetic powder brake (2).

4. The roller shutter door opener life testing device according to claim 3, characterized in that: The main shaft transmission assembly also includes a coupling (9), a part of which is fixedly connected to the output shaft of the magnetic powder brake (2), and the other part of which is fixedly connected to the input shaft (81) of the torque sensor (8).

5. The roller shutter door opener life testing device according to claim 1, characterized in that: The frame (1) is provided with a test platform (10), and a support frame (11) is installed on the test platform (10). The support frame (11) is provided with an installation platform (12) for installing and fixing the product under test (A). The frame (1) is provided with a drive device that can drive the installation platform (12) to rise and fall vertically.

6. The roller shutter door opener life testing device according to claim 5, characterized in that: The drive device includes a screw jack (13), which is installed on the bottom surface of the test platform (10). The passive screw (131) of the screw jack (13) is longitudinally connected to the bottom of the installation platform (12), and the active screw (132) of the screw jack (13) extends laterally out of the frame (1) and is connected to a hand crank (133).

7. The roller shutter door opener life testing device according to claim 2, characterized in that: The drive spindle (7) is provided with a long flat key (71) at one end corresponding to the driven sprocket (6). The driven sprocket (6) is provided with a sprocket keyway (61) corresponding to the long flat keyway (71), and a locking hole (62) is provided corresponding to the sprocket keyway (61). The fastening unit passes through the locking hole (62) to press the long flat keyway (71), so that the driven sprocket (6) is fixed at an adjustable depth on the drive spindle (7).

8. The roller shutter door opener life testing device according to claim 4, characterized in that: The input shaft (81) and output shaft (82) of the torque sensor (8) and the output shaft of the magnetic powder brake (2) are provided with a flat key structure (14), and the torque wheel (4) and the coupling (9) are provided with a keyway structure (15) that cooperates with the flat key structure (14).

9. The roller shutter door opener life testing device according to claim 2, characterized in that: A limiting plate (16) is fixedly connected to the lower side of the torque wheel (4) on the frame (1) and is set on the same vertical plane. A limiting arc edge (161) matching the arc of the torque wheel (4) is opened on the limiting plate (16). The limiting arc edge (161) is located on the outside of the transmission chain (5).

10. The roller shutter door opener life testing device according to claim 5, characterized in that: The frame (1) is located below the test platform (10) and forms a braking chamber (17). The magnetic powder brake (2), frequency converter (3), torque wheel (4) and torque sensor (8) are installed in the braking chamber (17) through bracket (18) or bearing (19).

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