Handle service life testing device

Abstract

The utility model provides a handle service life testing device, which belongs to the technical field of handle testing and comprises a horizontal rotating assembly and a handle driving assembly. The horizontal rotating assembly comprises a transmission shaft, a rotating sliding rail and a clamping column, the rotating sliding rail is fixed to the transmission shaft in a sleeving mode, and the clamping column is positioned on one side of the rotating sliding rail and used for clamping a handle. The handle driving assembly comprises a rotating motor, a speed reducer and a torque sensor which are coaxially arranged in sequence, the rotating motor is used for driving the transmission shaft to rotate, the speed reducer is used for reducing the output rotating speed of the rotating motor and increasing the torque, and the torque sensor is used for measuring the output torque of the speed reducer. The handle service life testing device provided by the utility model can accurately and intuitively complete the detection of the handle, and is reliable in data and high in automation degree.

Description

Technical Field

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

[0002] The handle is a critical component of a power-off electromagnetic brake. When the brake loses power, manually pulling the handle releases the friction pads to release the brake. For example, in the event of a power outage or equipment maintenance, manual brake release is required to facilitate debugging and repair, meeting on-site equipment operation requirements. In actual production, the handle's lifespan and overall brake performance are affected by increased use. Therefore, during design, repeated pushing and releasing of the handle is necessary to test its lifespan and understand its performance changes and their impact on other aspects of the power-off electromagnetic brake.

[0003] The existing method for testing the life of a handle of a power-off electromagnetic brake involves radially mounting the brake on a fixture, installing a single-acting cylinder on one side of the handle, and placing a portion of the handle within a movable groove in the piston rod head of the single-acting cylinder. The cylinder's piston rod extends and retracts, driving the handle back and forth to achieve the test objective of pushing and releasing the handle. While this testing device is simple to operate, it still suffers from inaccurate test results and a low degree of automation. Utility Model Content

[0004] The purpose of the utility model is to provide a handle life test device, aiming to solve the problems of inaccurate test results and low degree of automation.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a handle life test device, comprising:

[0006] A horizontal rotating assembly includes a transmission shaft, a rotating slide rail, and a clamping column. The rotating slide rail is mounted on and fixed to the transmission shaft. The clamping column is positioned on one side of the rotating slide rail for clamping a handle.

[0007] The handle drive assembly includes a rotating motor, a reducer and a torque sensor arranged coaxially in sequence. The rotating motor is used to drive the transmission shaft to rotate, the reducer is used to reduce the output speed of the rotating motor and increase the torque, and the torque sensor is used to measure the output torque of the reducer.

[0008] In one possible implementation, an adjustment block is slidingly provided on the rotating slide rail, and the adjustment block is used to adjust the length of the force arm acting on the handle; the clamping column is fixed on the adjustment block, and the rotating slide rail drives the handle to a release position through the clamping column.

[0009] In one possible implementation, an installation detection component is further included, which is used to install and position the brake, including a first mounting plate, the first mounting plate having guide grooves spaced 120° and 90° apart, and is equipped with a slider that can slide flexibly in the guide groove, and the slider has a variety of threaded holes for fixing the brake.

[0010] In a possible implementation, the installation detection assembly further includes a servo motor, which is connected to the friction plate of the brake via a centering sleeve and drives the friction plate to rotate.

[0011] In one possible implementation, the output shaft of the reducer is connected to the torque sensor through a first coupling, the output shaft of the torque sensor is connected to a second coupling, the output end of the second coupling is connected to the transmission shaft, the fixed plate is vertically fixed on the base plate, and the bearing seat for supporting the transmission shaft is sleeved in the fixed plate.

[0012] In one possible implementation, a lifting drive assembly for driving the installation detection assembly to move is provided on the base plate, and the lifting drive assembly includes a screw rod and a connecting nut cooperating with the screw rod. A first mounting plate for installing the brake is fixedly provided on the upper portion of the connecting plate, and the connecting plate is fixed to the sliding mechanism, and the sliding mechanism is fixed to the connecting nut, and the connecting nut has the freedom to slide along the length direction of the screw rod.

[0013] In one possible implementation, an upper limit sensor and a lower limit sensor that limit the position of the installation detection component are fixed on the base plate. When the connecting nut moves, the metal sheet installed on the sliding mechanism reaches the internal groove of the upper limit sensor or the lower limit sensor during the up and down movement, causing them to sense and send an arrival signal to the PLC controller, and the drive motor that drives the screw to rotate will stop immediately, thereby limiting the moving distance of the installation detection component.

[0014] In one possible implementation, the base plate is arranged perpendicular to the horizontal plane, the output shaft of the reducer vertically passes through the hole on the motor support plate, the handle drive assembly, the horizontal rotation assembly and the installation detection assembly are coaxially located on the same side of the base plate, the lifting drive assembly is located on the other side of the base plate, and the base plate has a nut groove for the connecting nut to pass through.

[0015] In one possible implementation, a metal plate is fixed on the rotating slide rail, and an origin sensor is provided on the fixed plate. The metal plate approaches the origin sensor with the help of the rotation of the rotating slide rail and is used to trigger the origin sensor, sending a signal to the PLC controller that the horizontal rotating component has reached the origin.

[0016] In one possible implementation, it also includes a touch screen assembly, a safety door switch, a protective cover and an audible and visual alarm. The touch screen assembly is used to set experimental parameters and record experimental data. The protective cover isolates the experimental workstation from the outside world. The safety door switch detects whether the protective cover is open or closed based on whether the key blade installed on the cover door of the protective cover is inserted into the safety door switch, and sends a feedback signal to the PLC. The audible and visual alarm is used to transmit the equipment status with different colors of light and sound.

[0017] The beneficial effect of the handle life test device provided by the present invention is that, compared with the prior art, the handle drive assembly in the present invention is positioned on top of the base plate, and the handle drive assembly includes a rotary motor, a reducer, a first coupling, a torque sensor, and a second coupling, which are coaxially arranged in sequence. The rotary motor is used to drive the transmission shaft to rotate, the reducer is used to reduce the output speed of the rotary motor and increase the torque, and the torque sensor is used to measure the output torque of the reducer. The output end of the second coupling is connected to the transmission shaft, the rotating slide is mounted on the transmission shaft, the clamping column is positioned on one side of the rotating slide, and the mounting detection assembly is slidably arranged on the base plate.

[0018] In actual application, the installation and detection assembly includes a servo motor, which is connected to the brake friction plate through a centering sleeve and drives the friction plate to rotate. The rotating slide drives the handle to the release position through the clamping column. The torque sensor outputs the torque value of the driving handle. When the handle is in the release position, the servo motor drives the friction plate to rotate, and the drag torque during rotation is measured, finally completing the handle life test. This application can complete the detection of the handle more accurately and intuitively, with reliable data and a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 An axonometric diagram of a handle life test device provided by an embodiment of the present utility model;

[0021] Figure 2 An axonometric view of the base plate, handle drive assembly, and horizontal rotation assembly provided in an embodiment of the present utility model;

[0022] Figure 3 A schematic diagram of the connection between the lifting drive assembly and the base plate provided in an embodiment of the present utility model;

[0023] Figure 4 A schematic structural diagram of a horizontal rotating assembly provided in an embodiment of the present utility model;

[0024] Figure 5 An exploded view of a horizontal rotation assembly provided in an embodiment of the present utility model;

[0025] Figure 6 This is a flow chart of the handle life testing device provided in an embodiment of the present utility model.

[0026] In the figure: 10, upper frame; 11, frame table; 12, protective cover; 13, touch screen assembly; 14, sound and light alarm; 15, bottom plate; 151, nut slot; 16, brake; 17, safety door switch; 20, handle drive assembly; 21, rotating motor; 22, reducer; 23, motor support plate; 24, first coupling; 25, torque sensor; 26, second coupling; 30, horizontal rotation assembly; 31, bearing seat; 32, fixed plate; 33, rotating slide rail; 34, Adjusting block; 35. Clamping column; 36. Origin sensor; 37. Metal plate; 38. Drive shaft; 40. Installation and detection assembly; 41. First mounting plate; 42. Connecting plate; 43. Triangular plate; 44. Servo motor; 50. Lifting drive assembly; 51. Drive motor; 52. Second mounting plate; 53. Third coupling; 54. Screw; 55. Connecting nut; 56. Sliding mechanism; 57. Linear guide; 58. Metal sheet; 581. Upper limit sensor; 582. Lower limit sensor. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] Please also refer to Figures 1 to 6The handle life test device provided by the present invention will now be described. The handle life test device comprises: a base plate 15, a horizontal rotation assembly 30, a handle drive assembly 20, a lifting drive assembly 50 and an installation detection assembly 40. The handle drive assembly 20 is positioned on the top of the base plate 15. The installation detection assembly 40 is slidably arranged on the base plate 15 and is located below the horizontal rotation assembly 30. The installation detection assembly 40 is used to install and position the brake 16; the installation detection assembly 40 includes a servo motor 44, which is connected to the friction plate of the brake 16 through a centering sleeve and drives the friction plate to rotate. The rotating slide rail 33 drives the handle to move to the release position through the clamping column 35; the handle drive assembly 20 includes a torque sensor 25, which is used to measure the torque value of the driving handle. The installation detection assembly 40 is used to drive the friction plate to rotate through the servo motor 44 when the handle is in the release position, and measure the drag torque during rotation. The base plate 15 is arranged perpendicular to the horizontal plane, the output shaft of the reducer 22 vertically passes through the hole on the motor support plate 23, the handle drive assembly 20, the horizontal rotation assembly 30 and the installation detection assembly 40 are coaxially located on the same side of the base plate 15, and the lifting drive assembly 50 is located on the other side of the base plate. The base plate 15 has a nut groove 151 for the connecting nut to pass through.

[0029] The beneficial effect of the handle life test device provided by the present invention is that, compared with the prior art, the handle drive assembly 20 in the handle life test device of the present invention is positioned at the top of the base plate 15, and the handle drive assembly 20 includes a rotary motor 21, a reducer 22, a first coupling 24, a torque sensor 25, and a second coupling 26, which are coaxially arranged in sequence. The rotary motor 21 is used to drive the transmission shaft 38 to rotate, the reducer 22 is used to reduce the output speed of the rotary motor 21 and increase the torque, and the torque sensor 25 is used to measure the output torque of the reducer 22. The output end of the second coupling 26 is connected to the transmission shaft 38, the rotating slide 33 is mounted on the transmission shaft 38, the clamping column 35 is positioned on one side of the rotating slide 33, and the installation detection assembly 40 is slidably arranged on the base plate 15.

[0030] In actual application, the installation and detection component 40 includes a servo motor 44. The output shaft of the servo motor 44 is connected to the friction plate of the brake 16 through the centering sleeve and can drive the friction plate to rotate. The rotating slide 33 drives the handle to the release position through the clamping column 35. When the handle is in the release position, the servo motor 44 of the installation and detection component 40 drives the friction plate to rotate, measures the drag torque of the friction plate during rotation, and records the data on the touch screen component 13, finally completing the handle life test. The present application can complete the detection of the handle more accurately and intuitively, the data is reliable, and the degree of automation is high.

[0031] Existing testing devices can only install and test smaller power-off electromagnetic brakes, and due to limited testing space and mounting holes, they are not suitable for a wider range of power-off electromagnetic brakes. Because the centering sleeve is not installed during the release and recovery of the power-off electromagnetic brake handle, the friction plate remains off-center during testing and cannot remain centered. The test speed and time cannot be precisely adjusted. For example, a single test cycle requires a 2-second release and 2-second recovery of the handle, at a rate of 5 cycles per minute. These parameters cannot be set in detail. The single-acting cylinder's telescopic handle has a limited rotation angle, making it difficult to precisely set the handle's rotation angle. Adjusting the force application point of the single-acting cylinder's telescopic handle is cumbersome and time-consuming. Furthermore, because the force application point varies for different brake handle lengths, the testing device cannot accommodate different brake handle lengths. During testing, the handle release and recovery actions are driven by the cylinder rod itself, which makes it impossible to measure the actual release and recovery forces of the handle in real time, nor can the force applied to push and recover the handle be set. The actual handle position, the number of reciprocating cycles, and the number of reciprocating movements cannot be observed in real time. Furthermore, there are no alarms or responses to abnormal test conditions, resulting in low test accuracy. The test bench is exposed to the elements, and moving parts can easily injure operators.

[0032] The upper frame 10 is the upper part of the test device. A frame table 11 is provided below the upper frame 10. A protective cover 12 is provided on the frame table 11 to cover the brake 16 and the horizontal rotation assembly 30 in the experiment as a whole, so as to isolate and protect the sample and ensure the safety of the equipment, samples and personnel during the experiment.

[0033] During the opening and closing process of the protective cover 12, a safety door switch 17 mounted on the frame of the upper frame 10 detects whether the protective cover 12 is open or closed based on whether the key blade, mounted on the cover door, is inserted into the safety door switch 17. When the cover door is closed and the key blade is inserted into the safety door switch 17, the safety signal circuit is connected and a feedback signal indicating that the protective cover 12 is closed is sent to the PLC. When the cover door is open and the key blade is not inserted into the safety door switch 17, the safety signal circuit is disconnected and a feedback signal indicating that the protective cover 12 is open is sent to the PLC.

[0034] In some embodiments of the handle life test device provided in this application, please refer to Figure 1 and Figure 6 The upper frame 10 is equipped with a touch screen assembly 13 and an audible and visual alarm 14 connected to the touch screen assembly 13. The touch screen assembly 13 is used to display the data fed back by the torque sensor 25. The upper frame 10 also includes the touch screen assembly 13, a safety door switch 17, a protective cover 12, and the audible and visual alarm 14. The audible and visual alarm 14 is used to convey the equipment status through different colored lights and sounds.

[0035] The touch screen assembly 13 is located on the upper frame 10 and is used to connect to the PLC controller's electrical control system to control equipment operation, set experimental parameters, and record experimental data. An audible and visual alarm 14 is also located on the upper frame 10 and is used to communicate the equipment status through red, green, and yellow lights, as well as sounds. When the equipment is testing normally, the green light remains on. When the experiment is completed and the equipment is in a stopped state, the yellow light remains on. If an abnormality occurs while the equipment is running or stopped, the red light will remain on and an audible alarm will sound.

[0036] The protective cover 12, mounted on the rack table 11, is connected to the PLC controller's safety door switch 17 via a key blade on the cover door, protecting and isolating the experimental equipment and protecting personnel during operation. If the protective cover 12 is abnormally opened or removed, the key blade separates from the safety door switch 17, disconnecting the circuit of the safety door switch 17 and generating a disconnect signal that is transmitted to the PLC controller. Upon receiving this signal, the PLC controller immediately stops the operation of the handle drive assembly 20, the horizontal rotation assembly 30, the installation detection assembly 40, and the lifting drive assembly 50. The three-color light buzzer will light up red, the buzzer will sound, and the touch screen assembly 13 will display and record abnormal information.

[0037] In some embodiments of the handle life test device provided in this application, please refer to Figure 1 、 Figure 2 、 Figure 4 and Figure 5 An adjustment block 34 is slidably mounted on the rotating slide 33. The adjustment block 34 is used to adjust the length of the lever arm acting on the handle of the brake 16. A clamping column 35 is fixed to the adjustment block 34. The base plate 15 is mounted on the upper frame 10 and is used to mount the handle drive mechanism and the sample operation platform, as well as provide structural support for the entire device.

[0038] The handle drive assembly 20 is arranged at the upper end of the base plate 15, and is used to provide and transmit the rotational power required by the horizontal rotation assembly 30. It can also measure the torque value applied to the handle during the rotation process. The handle drive assembly 20 includes a rotating motor 21 for providing rotational power, a reducer 22 for increasing the output torque of the rotating motor 21, a motor support plate 23 for fixing the rotating motor 21 and the reducer 22, and a first coupling 24 connected to a torque sensor 25 for measuring torque.

[0039] The motor support plate 23 is vertically fixed to the upper end of the base plate 15. The handle drive assembly 20 is arranged downward in a vertical direction, which is perpendicular to the horizontal plane. The servo motor 44 has its axis in the vertical direction. The motor shaft of the rotary motor 21 is vertically installed and connected to the reducer 22 for amplifying the output torque. The reducer 22 is also vertically installed on the upper end surface of the motor support plate 23. The output shaft of the reducer 22 vertically passes through the hole in the motor support plate 23 and is connected to the torque sensor 25 for measuring speed and torque through the first coupling 24. The torque sensor 25 is fixed to the base plate 15 via a positioning plate. The output shaft of the torque sensor 25 is connected to the second coupling 26. The fixed plate 32 is vertically fixed to the base plate 15. The bearing seat 31 for supporting and fixing the transmission shaft 38 is sleeved within the fixed plate 32. The transmission shaft 38 passes through the center hole of the bearing seat 31 and is connected to the rotating slide 33.

[0040] When performing the drag torque test of the friction plate of the brake 16, the horizontal rotation component 30 drives the handle of the brake 16 to the release position, and then starts the rotation of the servo motor 44 installed with the detection component 40. The centering sleeve fixed on the output shaft of the servo motor 44 drives the friction plate of the brake 16 to rotate, and the output torque of the servo motor 44 will be displayed on the touch screen component 13. By checking its output torque value, the performance of the friction plate after the set number of handle life tests can be seen.

[0041] The motor support plate 23 and the fixed plate 32 are fixedly mounted on the same side of the base plate 15 and arranged parallel to the horizontal plane. The installation detection assembly 40 is moved along the linear guide rail 57 by the sliding mechanism 56 of the lifting drive assembly 50, which can simultaneously maintain the concentricity of the handle drive assembly 20, the horizontal rotation assembly 30, and the installation detection assembly 40 to prevent eccentricity.

[0042] In some embodiments of the handle life test device provided in this application, please refer to Figure 2 、 Figure 4 and Figure 5There are two clamping columns 35, which are arranged in parallel and are used to cooperate with the clamping handle. The horizontal rotation assembly 30 is arranged below the handle drive assembly 20. The clamping column 35 is used to clamp the brake 16 handle to cyclically release and restore the handle. The input end of the transmission shaft 38 of the horizontal rotation assembly 30 is connected to the second coupling 26 of the handle drive assembly 20. The horizontal rotation assembly 30 includes a transmission shaft 38 for transmitting driving force, a bearing seat 31 sleeved on the transmission shaft 38, a fixing plate 32 for fixing the bearing seat 31, a rotary slide 33 that can rotate with the transmission shaft 38, a clamping column 35 for clamping the handle, an adjustment block 34 for positioning the clamping column 35, an origin sensor 36 (photoelectric sensor) and a metal plate 37 for handle reset sensing, and the rotary slide 33 is sleeved and fixed on the transmission shaft 38. The clamping column 35 is positioned on one side of the rotary slide 33 through the adjustment block 34 to clamp the handle.

[0043] In some embodiments of the handle life test device provided in this application, please refer to Figure 4 and Figure 5 A metal plate 37 is fixed to the rotating slide 33, and a fixed plate 32 is installed on the base plate 15. The fixed plate 32 is mounted on the outside of the bearing seat 31 and is provided with an origin sensor 36. The metal plate 37 approaches the origin sensor 36 with the help of the rotation of the rotating slide 33 and is used to trigger the origin sensor 36. The transmission shaft 38 is sleeved in the bearing seat 31, its input end is connected to the second coupling 26, and its output end is provided with a horizontally mounted rotating slide 33. The adjustment block 34 of the adjustable driving force arm has an inner hole for the rotating slide 33 to pass through and is fixed by screws. The clamping column 35 for clamping the handle is provided in symmetrical through-holes on both sides of the adjustment block 34 and is vertically inserted into the through-hole of the adjustment block 34. The first mounting plate 41 for mounting the power-off electromagnetic brake 16 is provided on the upper part of the connecting plate 42, and the servo motor 44 is sleeved on the lower part of the connecting plate 42. The lower part of the connecting plate 42 has triangular plates 43 on both sides as supports.

[0044] The origin sensor 36 is installed at the lower part of the fixed plate 32, and the metal plate 37 is installed on the side of the rotating slide 33. When the reset action before the test run is performed, the rotating motor 21 drives the rotating slide 33 to rotate at high speed, and the origin sensor 36 serves as the origin of the horizontal rotating component 30. When the metal plate 37 rotates to the give way groove of the origin sensor 36, the origin sensor 36 will be sensed and immediately send a signal that the horizontal rotating component 30 has reached the origin to the PLC controller. After receiving this signal, the PLC controller immediately switches the rotating motor 21 to low-speed rotation and stops after a certain angle, and finally stops the handle drive component 20 and the horizontal rotating component 30 from rotating.

[0045] In some embodiments of the handle life test device provided in this application, please refer to Figure 5, a groove for avoiding the metal plate 37 is provided on the origin sensor 36. The handle drive assembly 20, as the source of driving force, can drive the rotating slide 33 connected to it at the bottom to rotate. The output shaft of the rotating motor 21 is sleeved on the input end of the reducer 22, and the reducer 22 is fixedly sleeved inside the hole in the motor support plate 23. The output end of the reducer 22 is connected to the input end of the torque sensor 25 shaft through the first coupling 24. Then the output end of the torque sensor 25 shaft is connected to the second coupling 26 and drives the transmission shaft 38 sleeved on the bearing seat 31 to rotate, and drives the rotating slide 33 fixed at its lower end to rotate.

[0046] The output shaft of the drive motor 51 drives the screw 54 to rotate through the third coupling 53 connected thereto, causing the connecting nut 55 sleeved on the screw 54 to move upward or downward. The connecting nut 55 passes through the nut slot 151 of the base plate 15 and connects to the sliding mechanism 56. The sliding mechanism 56 moves upward until the metal sheet 58 installed on the side of the base plate 15 enters the groove space of the upper limit sensor 581. At this time, the upper limit sensor 581 is sensed and immediately sends an upper limit reached signal to the PLC controller. Upon receiving this signal, the PLC controller immediately stops the rotation of the drive motor 51, thereby stopping the lifting drive assembly 50. The sliding mechanism 56 moves downward until the metal sheet 58 installed on the side of the sliding mechanism 56 enters the internal slot of the lower limit sensor 582. At this time, the lower limit sensor 582 is sensed and immediately sends a lower limit reached signal to the PLC controller. Upon receiving this signal, the PLC controller immediately stops the rotation of the drive motor 51, thereby stopping the lifting drive assembly 50. When the connecting nut 55 moves, if the metal sheet 58 installed on the sliding mechanism 56 reaches the internal groove (photoelectric sensor) of the upper limit sensor 581 or the lower limit sensor 582 during the up and down movement, they will be sensed and send an arrival signal to the PLC controller. The drive motor 51 will stop immediately and the screw rod 54 connected through the coupling will stop rotating, thereby limiting the moving distance of the connecting nut 55, so that the connecting nut 55 will not hit the horizontal rotating assembly 30 when moving upward, and will not deviate from the linear guide rail 57 when moving downward, ensuring stable and safe operation of the equipment.

[0047] In some embodiments of the handle life test device provided in this application, please refer to Figure 2 and Figure 3The bottom plate 15 is provided with a lifting drive assembly 50 for driving the installation and detection assembly 40 to slide. The installation and detection assembly 40 is fixed to the connecting nut 55 of the lifting drive assembly 50. The installation and detection assembly 40 is used to install and fix the brake 16 sample and to detect in real time whether the friction plate can rotate flexibly in the released state. It includes a first mounting plate 41 for mounting the brake 16 sample, a connecting plate 42 for fixing the servo motor 44, a triangular plate 43 for supporting the installation and detection assembly 40, and a servo motor 44 that provides driving force.

[0048] Adjust the upper and lower positions of the connecting nut 55 so that the handle of the brake 16 is initially in a suitable experimental position and angle, drive the horizontal rotating assembly 30 to rotate until the clamping space of the clamping column 35 can align with the position of the handle, move the adjustment block 34 along the rotating slide rail 33, and adjust its driving length according to the set force arm. The driving length corresponds to the force application position of the handle, and then adjust the lifting drive assembly 50 so that the connecting nut 55 drives the installation detection assembly 40 to rise, so that the position of the brake 16 fixed on the first mounting plate 41 moves up and the handle can be clamped by the clamping column 35.

[0049] When the lifting drive assembly 50 drives the connecting nut 55 to move upward or downward, the drive motor 51 installed on the second motor mounting plate 52 rotates and drives the screw rod 54 to rotate through the third coupling 53. The external thread of the screw rod 54 cooperates with the internal thread of the connecting nut 55 to convert the rotational motion of the screw rod 54 into axial motion of the connecting nut 55, and drives the sliding mechanism 56 located on the linear guide rail 57 to move through the connecting nut 55, thereby driving the installation detection assembly 40 to move upward or downward.

[0050] When the clamping column 35 of the horizontal rotating component 30 rotates and pushes the handle to reach the release position, the friction plate is in a released state and can rotate freely. The friction plate of the brake 16 is connected to the output shaft of the servo motor 44 through the centering sleeve. The servo motor 44 can drive the centering sleeve installed on its output shaft to detect the friction plate of the brake 16. According to the set output torque value and the drag torque value set for the friction plate, it is detected whether the brake 16 is in good condition. If abnormal rotation occurs, the touch screen component 13 and the three-color light buzzer will issue an audible and visual alarm prompt and record it.

[0051] In some embodiments of the handle life test device provided in this application, please refer to Figure 2 and Figure 3The lifting drive assembly 50 includes a screw 54, a connecting nut 55 that cooperates with the screw 54, and a rotary motor 21 that provides driving force. The installation and detection assembly 40 is fixed to the connecting nut 55. The connecting nut 55 is slidably mounted on the base plate 15 and has the freedom to slide only along the length of the screw 54. Adjusting the position of the connecting nut 55 facilitates manual adjustment of the installation brake 16, ensuring that the installation and detection assembly 40 and the horizontal rotation assembly 30 work well together during the experiment. The sliding mechanism 56 is fixed to the connecting nut 55.

[0052] In some embodiments of the handle life test device provided in this application, please refer to Figure 1 and Figure 2 The installation and detection assembly 40 includes a connecting plate 42. The upper end surface of the first mounting plate 41 is used to fix the brake 16, and the connecting plate 42 is fixed to the connecting nut 55. The upper and lower positions of the connecting nut 55 are adjusted to provide a certain operating space for the first mounting plate 41 to facilitate manual installation of the brake 16. The brake 16 is fixed to the upper end surface of the first mounting plate 41 of the installation and detection assembly 40 with screws. The output shaft of the servo motor 44 passes through the concentric center hole of the first mounting plate 41 and the connecting plate 42 of the brake 16. The centering sleeve of the brake 16 is fixed to the output shaft of the servo motor 44. The tail plate of the brake 16 is downwardly aligned with the upper end surface of the first mounting plate 41. The brake 16 is fixed with screws and it is ensured that the centering sleeve and the friction plate are well matched.

[0053] The brake 16 mounting plate has been redesigned and optimized to facilitate installation and adjustment. The first mounting plate 41 features guide grooves spaced 120° and 90° apart, and is equipped with a removable, fixed slider that slides flexibly within the guide grooves. The slider has a variety of threaded holes for securing the brake 16. To install the brake 16, simply slide the slider, align the threaded holes with the brake 16 mounting holes, and tighten the screws for quick installation and disassembly.

[0054] Debugging the handle before the experiment is much quicker. Simply install the brake 16, adjust the corresponding components, and set the relevant values on the touch screen to complete the debugging process, providing more data support and reference for debugging. The friction plate of the brake 16 can be kept centered during the experiment, keeping it in the friction zone at all times, reducing the impact of friction plate deviation on the experimental data of the brake 16 handle.

[0055] Test accuracy is higher. Since all motors are servo motors, the PLC can be used to precisely adjust and set parameters such as the handle rotation angle, drive arm length, drive force, swing speed, and number of experiments during the experiment to achieve more accurate experimental requirements. Compared with the simple structure of cylinder drive, using servo motor drive as a power source is more stable and reliable, can reduce errors caused by long-term experiments, facilitate precise control and subsequent maintenance, and reduce the impact of equipment structure differences on experimental data. The addition of a safety cover to isolate the experimental station from the outside world can effectively protect personnel safety and reduce safety hazards.

[0056] The fixed plate 32 has avoidance grooves on both sides of the contact surface with the base plate 15, allowing the fixed plate 32 to contact the surface of the linear guide 57 and the linear guide 57 to pass through the fixed plate 32. The position of the installation detection component 40 is adjusted by driving the sliding mechanism 56 of the lifting drive component 50 to move on the linear guide 57. The drive motor 51 that drives the screw rod 54 to rotate will stop immediately, thereby limiting the movement distance of the installation detection component 40. In this way, the handle drive component 20, the horizontal rotation component 30, and the installation detection component 40 can maintain concentricity at the same time. Concentricity is guaranteed between the various components of the equipment, reducing errors caused by wear and tear caused by long-term operation of the equipment and ensuring a longer life for the equipment parts.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. The handle life test device is characterized by: include: A horizontal rotating assembly includes a transmission shaft, a rotating slide rail, and a clamping column. The rotating slide rail is mounted on and fixed to the transmission shaft. The clamping column is positioned on one side of the rotating slide rail for clamping a handle. The handle drive assembly includes a rotating motor, a reducer and a torque sensor arranged coaxially in sequence. The rotating motor is used to drive the transmission shaft to rotate, the reducer is used to reduce the output speed of the rotating motor and increase the torque, and the torque sensor is used to measure the output torque of the reducer.

2. The handle life test device according to claim 1, characterized in that: An adjustment block is slidably provided on the rotating slide rail, and the adjustment block is used to adjust the length of the force arm acting on the handle; the clamping column is fixed on the adjustment block, and the rotating slide rail drives the handle to move to a release position through the clamping column.

3. The handle life test device according to claim 1, characterized in that: It also includes an installation and detection component, which is used to install and position the brake, including a first mounting plate, the first mounting plate having guide grooves spaced 120° and 90° apart, and is equipped with a slider that can slide flexibly in the guide groove, and the slider has a variety of threaded holes for fixing the brake.

4. The handle life test device according to claim 3, characterized in that: The installation detection component also includes a servo motor, which is connected to the friction plate of the brake through a centering sleeve and drives the friction plate to rotate.

5. The handle life testing device according to claim 3, characterized in that: The output shaft of the reducer is connected to the torque sensor through a first coupling, the output shaft of the torque sensor is connected to a second coupling, the output end of the second coupling is connected to the transmission shaft, the fixed plate is vertically fixed on the base plate, and the bearing seat for supporting the transmission shaft is sleeved in the fixed plate.

6. The handle life test device according to claim 5, characterized in that: The base plate is provided with a lifting drive assembly for driving the installation detection assembly to move, the lifting drive assembly includes a screw rod and a connecting nut cooperating with the screw rod, the first mounting plate for installing the brake is fixedly provided on the upper part of the connecting plate, the connecting plate is fixed to the sliding mechanism, the sliding mechanism is fixed to the connecting nut, and the connecting nut has the freedom to slide along the length direction of the screw rod.

7. The handle life test device according to claim 6, characterized in that: An upper limit sensor and a lower limit sensor for limiting the position of the installation detection component are fixed to the base plate. When the connecting nut moves, the metal sheet installed on the sliding mechanism reaches the internal groove of the upper limit sensor or the lower limit sensor during the up and down movement, causing them to sense and send an arrival signal to the PLC controller. The drive motor that drives the screw to rotate will stop immediately, thereby limiting the moving distance of the installation detection component.

8. The handle life test device according to claim 6, characterized in that: The base plate is arranged perpendicular to the horizontal plane, the output shaft of the reducer vertically passes through the hole on the motor support plate, the handle drive assembly, the horizontal rotation assembly and the installation detection assembly are coaxially located on the same side of the base plate, and the lifting drive assembly is located on the other side of the base plate. The base plate has a nut groove for the connecting nut to pass through.

9. The handle life testing device according to claim 5, characterized in that: A metal plate is fixed on the rotating slide rail, and an origin sensor is provided on the fixed plate. The metal plate approaches the origin sensor with the help of the rotation of the rotating slide rail and is used to trigger the origin sensor, sending a signal that the horizontal rotating component has reached the origin to the PLC controller.

10. The handle life test device according to claim 1, characterized in that: It also includes a touch screen assembly, a safety door switch, a protective cover and an audible and visual alarm. The touch screen assembly is used to set experimental parameters and record experimental data. The protective cover isolates the experimental workstation from the outside world. The safety door switch detects whether the protective cover is open or closed based on whether the key blade installed on the cover door of the protective cover is inserted into the safety door switch, and sends a feedback signal to the PLC. The audible and visual alarm is used to transmit the equipment status with different colors of light and sound.

Images