An overspeed protector test fixture

Abstract

The utility model discloses a kind of overspeed protector test fixture, including test platform, rotatablely arranged on its carousel and the fixed clamp for fixing overspeed protector.Translation is driven by carousel motor, adjustable and lock in different inclination angles.Test platform is equipped with initiative motor, and its output shaft transmission gear is used to drive the gear of overspeed protector;Speedometer is connected with initiative motor to monitor rotation speed.Touch screen control box integrated controller and display screen, and with carousel motor, initiative motor, speedometer and the trigger switch electric connection of overspeed protector.The utility model can simulate the working condition of different inclination angles of staircase automatically, carry out multi-angle, automatic trigger speed test to overspeed protector, effectively improve test efficiency, accuracy and consistency.

Description

Technical Field

[0001] This utility model relates to the field of testing technology for overspeed protectors of chairlifts, and in particular to a fixture for testing overspeed protectors. Background Technology

[0002] Staircase elevators are special equipment operating in stairwell scenarios, and their safety largely depends on the reliability of their overspeed protectors. In actual use, the inclination angle of stairs varies, and the trigger speed of the overspeed protector changes depending on the installation angle. Currently, overspeed protector testing often uses simple variable-speed motors with fixed fixtures. These fixtures can typically only test at a single, fixed angle, failing to realistically simulate the product's performance under actual, varied angle conditions. Furthermore, the testing process heavily relies on manual operation, visual data reading and recording, resulting in low efficiency, susceptibility to human error, and difficulty in ensuring the accuracy and consistency of test results. Therefore, there is an urgent need for a fixture capable of automatically simulating different angles and performing precise tests to overcome the shortcomings of existing technologies. Utility Model Content

[0003] The purpose of this invention is to provide a fixture that can test the trigger speed of an overspeed protector at different angles.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An overspeed protector test fixture includes a test platform and further includes: A turntable, which is rotatably mounted on the test platform; A fixing clip, mounted on the turntable, is used to fix the overspeed protector being tested. A turntable motor, mounted on the test platform, is used to drive the turntable to rotate; An active motor is mounted on the test platform, and the output shaft of the active motor is provided with a transmission gear for driving the overspeed protector gear. The speedometer is connected to the output shaft of the active motor; A touch screen control box, including an internal controller and a touch screen display on the surface; The turntable motor, the drive motor, and the speed sensor are electrically connected to the controller inside the touchscreen control box. The controller of the touch screen control box is equipped with a signal interface for receiving the overspeed protector trigger switch signal.

[0005] Furthermore, a turntable shaft and a turntable bearing seat are sequentially connected to the turntable, and the output shaft of the turntable motor is connected to the turntable shaft via a synchronous belt, driving the turntable shaft to rotate.

[0006] Furthermore, the test platform is equipped with a scale.

[0007] Furthermore, the rotation angle of the turntable is 0-55 degrees.

[0008] Furthermore, the fixing clamp is an adjustable sliding clamp or a telescopic clamp.

[0009] Furthermore, the turntable motor and the drive motor are servo motors or stepper motors.

[0010] Furthermore, the speed measuring device is an optical encoder or a Hall sensor.

[0011] Compared with the prior art, the present invention has the following significant advantages: 1. Multi-angle automated testing is achieved, resulting in more comprehensive test coverage and more realistic and reliable results: Driven by a turntable motor, the overspeed protector under test can be precisely adjusted and locked at multiple preset angles (e.g., 0-55 degrees), automatically simulating its actual working state on stairs with varying inclines. This not only overcomes the limitations of traditional fixed-angle fixtures in terms of limited testing conditions but also eliminates errors caused by manual angle adjustments through automation. This ensures that test data accurately reflects the product's performance in different application scenarios, significantly improving test coverage and the reliability of results.

[0012] 2. Improved testing efficiency and accuracy, avoiding human error: This invention integrates touchscreen control, automatic speed measurement, automatic signal acquisition, and automatic result judgment functions, forming a complete automated testing process. Testers only need to place the workpiece and start the test; subsequent angle switching, acceleration, data recording, result comparison, and output are all automatically completed by the equipment. Compared to traditional manual reading, recording, and comparison methods, testing efficiency is significantly improved, while completely avoiding errors introduced by human operation and interpretation, ensuring the consistency and accuracy of test data.

[0013] 3. High degree of integration and intelligence, simple operation and complete functions: The control, display and data interaction are integrated into the touch screen control box and connected to the label printer, realizing the integration of "test-judgment-recording-output". The operation interface is intuitive, simplifying the operation process and reducing the technical requirements of operators. The system can automatically record the trigger speed and compare it with the preset range, display the results in real time with color (such as red / green), and automatically print qualified labels with product numbers after all tests are qualified, forming a complete data traceability chain, which is convenient for quality management and product archiving. Attached Figure Description

[0014] Figure 1 This is a top view of the fixture of this utility model; Figure 2 is a left view of the fixture of this utility model; Figure 3 is a structural schematic diagram of the overspeed protector of this utility model; Figure 4 This is a schematic diagram of the structure of the turntable motor and the turntable of this utility model; Figure 5 This is a schematic diagram of the turntable assembly of this utility model; Detailed Implementation In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] See Figure 1-5 As shown, an overspeed protector test fixture includes a test platform 1, and further includes: A turntable 2 is rotatably mounted on the test platform 1; the turntable 2 is connected in sequence to a turntable shaft 21 and a turntable bearing seat 22; A fixing clip 3 is set on the turntable 2 to fix the overspeed protector 7 to be tested; the overspeed protector 7 is equipped with a speed limiter gear 72 and a trigger switch 71. Turntable motor 4 is installed on test platform 1 to drive turntable 2 to rotate; specifically, the output shaft of turntable motor 4 is connected to turntable shaft 21 through synchronous belt 41, thereby driving turntable shaft 21 to rotate. The active motor 5 is mounted on the test platform 1. The output shaft of the active motor 5 is equipped with a transmission gear 51 for driving the overspeed protector gear. Speed ​​sensor 6 is connected to the output shaft of drive motor 5; The touch screen control box 8 includes an internal controller and a touch screen display on the surface; The turntable motor 4, the drive motor 5, and the speed sensor 6 are electrically connected to the controller inside the touch screen control box 8. The controller of the touch screen control box 8 is equipped with a signal interface for receiving the overspeed protector trigger switch signal.

[0018] In a preferred embodiment of this utility model, the test platform 1 is provided with an angle scale 13, and the rotation angle of the turntable 2 is 0-55 degrees.

[0019] In a preferred embodiment of this utility model, the fixing clamp 3 is a position-adjustable sliding clamp or a telescopic clamp.

[0020] In a preferred embodiment of this utility model, the turntable motor 4 and the drive motor 5 are servo motors or stepper motors.

[0021] In a preferred embodiment of this utility model, the speed measuring device 6 is a photoelectric encoder or a Hall sensor.

[0022] The overspeed protector under test is placed in the test position and secured with a clamp. Operation is then initiated via the touchscreen of the control box, driving the turntable motor to rotate the turntable to a preset angle. The drive motor then accelerates, driving the gears on the overspeed protector. A tachometer connected to the drive motor continuously monitors the rotation speed and sends feedback to the control box. When the overspeed protector reaches the trigger speed, its trigger switch sends a signal to the control box, recording the trigger speed and stopping the drive motor. The trigger speed is compared to the preset speed. If the trigger speed is within the preset range, the display shows the corresponding green number, proceeding to the next test; otherwise, a red number indicates test failure and the test ends. Each angle is tested twice. After two successful tests at each angle, the drive motor rotates to another angle to continue testing. After completing multiple angle tests, the control box prints a "qualified" label and product number via a connected label printer.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A test fixture for an overspeed protector, comprising a test platform, characterized in that, Also includes: A turntable, which is rotatably mounted on the test platform; A fixing clip, mounted on the turntable, is used to fix the overspeed protector being tested. A turntable motor, mounted on the test platform, is used to drive the turntable to rotate; An active motor is mounted on the test platform, and the output shaft of the active motor is provided with a transmission gear for driving the overspeed protector gear. The speedometer is connected to the output shaft of the active motor; A touch screen control box, including an internal controller and a touch screen display on the surface; The turntable motor, the drive motor, and the speed sensor are electrically connected to the controller inside the touchscreen control box. The controller of the touch screen control box is equipped with a signal interface for receiving the overspeed protector trigger switch signal.

2. The overspeed protector test fixture as described in claim 1, characterized in that: The turntable is sequentially connected to a turntable shaft and a turntable bearing seat. The output shaft of the turntable motor is connected to the turntable shaft via a synchronous belt, driving the turntable shaft to rotate.

3. The overspeed protector test fixture as described in claim 1, characterized in that: The test platform is equipped with a scale.

4. The overspeed protector test fixture as described in claim 1, characterized in that: The rotation angle of the turntable is 0-55 degrees.

5. The overspeed protector test fixture as described in claim 1, characterized in that: The fixing clamp is an adjustable sliding clamp or a telescopic clamp.

6. The overspeed protector test fixture as described in claim 1, characterized in that: The turntable motor and the drive motor are servo motors or stepper motors.

7. The overspeed protector test fixture as described in claim 1, characterized in that: The speed measuring device is a photoelectric encoder or a Hall sensor.

Images