Glass lifter performance durability test bench (simulated door)

According to the standard
QC/T 636-2000 (2005) "Electric Glass Elevators for Automobiles"
The technical specifications of this test bench meet the testing requirements in the relevant test clauses of the above standards.

3、 Technical specifications of the product
1. Testing items
Current characteristic detection, closing force detection, anti pinch performance, stroke detection, rising and falling operating speed detection, rising and falling time detection, self-locking detection, overvoltage resistance detection, thermal protection detection.
2. The composition and structure of the test bench
2.1 Composition of the test bench
Test bench, force measuring mechanism, simulated glass mechanism, test fixture, test power supply, computer control system, and data processing software.
2.2 Test bench layout
1) The test bench is mainly composed of a test bench and a computer control cabinet; The test bench adopts an aluminum profile frame structure, with a 15mm thick steel plate surface polished and chrome plated; The bottom four corners of the platform are equipped with dedicated corner wheel components, which can achieve free movement and landing support.
2) The computer console is a framework structure, and the cables of the test bench are connected through aviation joints. It can be easily separated from the test bench, with a beautiful and elegant overall appearance and easy operation.Glass lifter performance durability test bench (simulated door)

2.3 Appearance color of the test bench
The computer control cabinet adopts a spray coating treatment on the exterior, and the appearance color is in accordance with industrial design requirements.
3. Detailed description of the test bench
3.1 Test bench mechanical structure
◇ Simulated glass mechanism: using counterweights installed on the linear bearing guide rod mechanism to run up and down, with low mechanical friction; Both ends are designed with magnetic powder braking damping mechanisms, which can load the damping at both ends when simulating the rise and fall of glass, and install strong sensors to detect the loading resistance. Simulate the weight of the glass as a fixed value, and adjust the simulated glass weight required for the test by adding or removing counterweights.
◇ Force measuring mechanism: The stepper motor drives the wire carrying slider mechanism, which is equipped with a pressure sensor. When the elevator moves, it drives the force measuring stopper to move together and collide with the force sensor, which detects the magnitude of the output.

3.2 Implementation of experimental functions
1) Current characteristic detection: The current characteristics of electric glass lifting can be displayed in the form of displacement and current relationship curves to show the working current relationship of the glass lifting device. The horizontal axis is the running time of the lifting device, and the vertical axis is the rising and falling working current and locked rotor current;
2) Travel detection: The elevator drives the displacement sensor to slide and run together, and the distance between the upper and lower stops of the glass elevator is detected by the displacement sensor.
3) Rising and falling operating speed detection: Calculate the average speed of the glass lifter's rise and fall by converting the time and stroke of the rise and fall;
4) Closing force detection: Under the specified voltage and line resistance conditions, raise the glass to a position near the top stop and use a collision force sensor to detect the magnitude of the closing force and whether it is within the specified value range;
5) Anti pinch detection: Under the specified voltage and line resistance conditions, raise the simulated glass to a range of 1/3 to 4 centimeters from the upper stop, and use a sensor to detect the magnitude of the force during the rise;
6) Self locking detection: Install the glass lifter on the simulation platform, control the glass lifter to run to the upper stop and half of the glass stroke, and load a force of 500N on the screw mechanism through a stepper motor at the center of the simulated glass. The force sensor detects that the simulated glass descent is not more than 5mm, and the displacement sensor detects it;
7) Overvoltage resistance test: Use a working voltage of 16.5V to control the regulator for 10 working cycles, and then conduct a basic performance test. If the basic performance deviation is within 20%, it is qualified;
8) Thermal protection detection: Control the operation of the elevator, perform motor stalling, and detect the opening time and restart time of the motor protection through a current sensor.
3.3 Installation Fixture SectionGlass lifter performance durability test bench (simulated door)
1) The lifter is installed on a template, which can accommodate different types of manual and electric glass lifters such as gear arm, rope wheel, and flexible shaft;
2) The template material is industrial hard aluminum, which is easy to handle and install. The left and right parts share one template, and different types of elevators can be replaced by simply replacing the corresponding installation template, making the operation convenient;
3) The template has a certain degree of universality, and one template can install multiple elevators of the same type but different specifications;

4) The universal installation fixture for guide rail brackets can adjust different installation distances, with different installation holes on top to meet the fixing requirements of different glass lifters. After connecting with the glass lifter, it can be fixed with a universal template.

4. Test power supply
1) Load power input parameters:
2) Relative temperature: 0-40 ℃
3) Input voltage: AC 220V ± 10%, 50Hz
4) Load power supply output voltage adjustment range: 0~30V
5) Test maximum load current 30A
5. Computer and data processing software part
5.1 Computer Control System
1) Computer system configuration:
◇ P4 3.0G/1G/160G/17 'LCD display
◇ Inkjet printer and accessories
2) Motor control board and circuit
3) 650mm displacement sensor
4) Force sensors and transmitters
5) Current, upstream and downstream speed detection
6) High speed and high-precision A/D detection card
7) Damping mechanism controller
8) Stepper motor screw force measuring mechanism
9) Computer controlled cabinet (including electrical control)
The computer control cabinet is made of welded profile steel and is an integrated design of computer and control circuit; The monitor is placed on the desktop, and the lower part is designed with a drawer style keyboard rack; The industrial computer is placed under the keyboard, with access doors designed on both sides and front and rear for easy maintenance; The side of the keyboard is designed with a button box, which can be installed with corresponding operation buttons; In addition, the bottom four corners of the control cabinet are equipped with self-locking casters, which can be freely moved and locked for positioning.

5.2 System Control Software
WINDOWS operating platform, easy to operate, can set various detection parameters (according to detection standards). Standardized test report format, including testing data output, standardization, and accuracy.

1) Model extension module: It can add a product model of a glass lifter or delete a certain glass lifter;
2) Test parameter module: Test action editing, can edit parameters such as pause time, simulated glass damping size, action process, etc., combine different test actions, can set test parameters such as stall time and pause time, suitable for basic performance testing of various glass lifters;

3) Experimental functional module:
Electric glass lifter current characteristic detection function, closing force detection function, rising and falling stroke detection function, running speed detection function, running time detection function, self-locking detection function.
5.3 Data processing software
1) System functional modules: divided into system management module, printing module, modifiable content of relevant test reports, and printing test reports. The data during the experimental process can be automatically saved and imported into Excel. There is a database that can store the measured data for easy querying.

2) System protection function:
During the experiment, if the current and force exceed the standard, the system will automatically alarm and stop, and sound and light alarms will be triggered.

6. Technical indicators of the test bench
6.1 Mechanical properties and parameters
Actions include: up, down, stop, and stall; Linear travel 650mm.

6.2 Electrical Performance and Parameters
1) Detection range of force sensor: 10-1000N, detection accuracy: ± 0.3% FS, display accuracy: 1N;
2) Detection range of force sensor: 0~50N, detection accuracy: ± 0.3% FS, display accuracy: 1N;
3) Detection range of displacement sensor for ascending and descending stroke: 1-650mm, detection accuracy: ± 0.5% FS, display accuracy: 1mm;
4) Accuracy of running speed detection: ± 1% FS (converted from measured displacement and time);
5) Rise and fall time detection range (achieved through computer timer): 1~10S, detection accuracy: ± 0.5% FS; display accuracy: 0.1S;
6) Power supply voltage adjustment range: 0~30V
7) The voltmeter displays a resolution of 0.1V and an accuracy of ± 0.5% FS
8) The current sensor has a display resolution of 0.1A and an accuracy of ± 0.5% FS.

4、 Product usage conditions
1. Environmental requirements
◇ Humidity range: 35-90% (relative humidity);
◇ Operating temperature range: 0-45 ℃;
2. Power and gas source
Power supply voltage: 220VAC ± 10%,
◇ Work schedule: 8-hour work schedule;
3. Layout of the experimental site

5、 Real car door
1. Four electric lifters can be tested for durability of the actual car door at the same time
2. Durability test, one working cycle includes: bottom dead center - top dead center - midpoint - top dead center - bottom dead center. The glass rises to the upper stop, blocks for 1 second, loses power for 6 seconds, the glass descends to the lower stop, blocks for 1 second, loses power for 6 seconds.
3. Operating speed, the computer system monitors the time for the upper and lower limit positions of the glass lifter during the durability test, converts the average speed of the glass lifter, and displays it on the screen.
4. During the durability test, if the elevator motor is blocked, the thermal protector will be disconnected. The software system will pause the test program and detect the motor current when the thermal protector is restored in real time; The system can set the pause time after the thermal protector works to ensure the normal progress of the durability test, and the computer automatically tracks the data during the test.