Test device for detecting performance of automobile EMB

Abstract

The utility model relates to a car testing arrangement technical field especially relates to a kind of testing device for the EMB performance detection of car.It includes motor drive module, transmission case module, torque test module, product installation module, force sensor detection module and rack module.The utility model has the beneficial effects that:the present technical scheme is combined by motor drive module and transmission case module, so that test bench has active power source and passive power source test function, can be mutually authenticated contrast, improve test accuracy, through the design of torque test module and force sensor detection module, realize the accurate monitoring to input torque and output force.The measurement accuracy of the torque sensor reaches ±0.1%, the measurement accuracy of the force sensor reaches ±0.2%, ensure the reliability of test data.

Description

Technical Field

[0001] This utility model relates to the field of automotive testing equipment technology, and in particular to a testing device for automotive EMB performance testing. Background Technology

[0002] With the rapid development of the automotive industry, technological innovation in automotive braking systems is constantly advancing, and electromechanical braking systems (EMB), as a new braking technology, have gradually become a research and application hotspot. EMB systems achieve braking function through motor drive, offering advantages such as fast response speed, high control precision, and energy efficiency, thus gaining widespread attention in the modern automotive braking field. However, with the diversification of EMB systems, different types of EMB products exhibit significant differences in transmission efficiency, output force characteristics, etc., which places higher demands on product performance testing.

[0003] Existing technology, disclosed in patent announcement number CN202511046702.8, is a control method for an electromechanical braking system based on contact point detection and pattern management. Currently, performance testing of EMB systems mainly relies on single-function testing equipment or manual operation. These methods have many shortcomings, such as low testing accuracy, low efficiency, and inability to comprehensively evaluate product performance. Especially under high-speed operating conditions, traditional testing methods struggle to accurately measure the relationship between input torque and output force, leading to significant uncertainty in test results and failing to meet the need for comprehensive and accurate evaluation of EMB system performance. Furthermore, existing testing equipment often lacks compatibility, making it difficult to adapt to the testing needs of various types of EMB products, further limiting its application scope.

[0004] To address the aforementioned issues, it is necessary to design a comprehensive testing device that is compatible with multiple EMB products, possesses high-precision testing capabilities, and can effectively reduce human interference, thereby comprehensively improving the accuracy and reliability of EMB system performance testing. Utility Model Content

[0005] The purpose of this invention is to provide a testing device for automotive EMB performance testing, in order to overcome the aforementioned shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A testing device for automotive EMB performance testing includes a frame module, characterized in that: it further includes a motor drive module mounted on the frame module, a transmission box module connected to the motor drive module via a flexible coupling, a product mounting module connected to the transmission box module, a torque testing module mounted between the transmission box module and the transmission box module, and a force sensor detection module mounted on the product mounting module for detecting the output force of the product; The torque test module is used to monitor the torque from the motor drive module to the gearbox of the product under test and from the gearbox of the product under test to the caliper end of the product under test.

[0007] Preferably, the transmission box module consists of a helical gear assembly, bearings, an input shaft, and an output shaft.

[0008] Preferably, the helical gear assembly includes a main helical gear, driven helical gears that mesh with the main helical gear and are located on both sides of the main helical gear, and a mounting plate for mounting the main helical gear and the driven helical gears. The input shaft and the output shaft are respectively connected to the driven helical gears on both sides, and the driven helical gears are mounted by bearings.

[0009] Preferably, the torque testing module includes a torque sensor and a fixing fixture. The torque sensor is connected to the motor to the transmission box module of the product under test and to the gearbox of the product under test to the caliper end of the product under test.

[0010] Preferably, the product mounting module includes a product fixing fixture and a linear bearing module simulation component. The linear bearing module simulation component is connected to the execution end of the product under test. The linear bearing module simulation component includes a first rigid coupling connected to the output end of the product under test, a first torque sensor connected to the first rigid coupling, a second rigid coupling connected to the first torque sensor, a lead screw connected to the second rigid coupling, and a bearing connected to the lead screw.

[0011] Preferably, the force sensor detection module is mounted on the product mounting module, and includes a force sensor, a pre-pressed workpiece, and a force sensor fixing rod.

[0012] Preferably, the bottom of the frame module is equipped with fuma wheels.

[0013] The beneficial effects of this utility model are: by combining the motor drive module and the transmission box module, this technical solution enables the test bench to have both active power source and passive power source testing functions, which can be mutually verified and compared to improve the accuracy of the test. The design of the torque testing module and force sensor detection module enables precise monitoring of input torque and output force. The torque sensor achieves a measurement accuracy of ±0.1%, and the force sensor achieves a measurement accuracy of ±0.2%, ensuring the reliability of the test data. By leveraging mature software algorithms to integrate and analyze data, manual intervention can be reduced, thereby improving testing efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a testing device for automotive EMB performance testing according to the present invention; Figure 2 This is a schematic diagram of the equipment frame structure of a testing device for automotive EMB performance testing according to this utility model; Figure 3 This is a top view of the testing structure of a testing device for automotive EMB performance testing according to this utility model; Figure 4 This is a schematic diagram of a transmission box module of a testing device for automotive EMB performance testing according to this utility model; Figure 5 This is a schematic diagram of a force sensor detection module assembly for a testing device used for automotive EMB performance testing according to this utility model. In the diagram: 1. Motor drive module; 2. Transmission box module; 3. Torque testing module; 4. Product mounting module; 5. Force sensor detection module; 6. Frame module; 21. Helical gear assembly; 22. Bearing; 211. Main helical gear; 212. Driven helical gear; 23. Input shaft; 24. Output shaft; 41. Product fixing fixture; 42. Linear bearing module simulation assembly; 421. First rigid coupling; 422. First torque sensor; 423. Second rigid coupling; 424. Lead screw; 425. Bearing; 51. Force sensor; 52. Pre-loaded workpiece; 53. Force sensor fixing rod. Detailed Implementation

[0015] Reference Figures 1 to 5 A testing device for automotive EMB performance testing includes a motor drive module 1, a transmission box module 2, a torque testing module 3, a product mounting module 4, a force sensor detection module 5, and a frame module 6. The motor drive module 1 is connected to the transmission box module 2 via a flexible coupling. The transmission box module 2 is used to transmit power to the gearbox of the product under test. The torque testing module 3 includes a torque sensor and a fixing fixture. The product mounting module 4 includes a product fixing fixture, transmission gears, and bearings. The force sensor detection module 5 includes a force sensor, a pre-loaded workpiece, and a force sensor fixing rod. The frame module 6 is welded from 80×80 square steel.

[0016] The design of the frame module 6 ensures overall rigidity and stability. The welded joints of the frame module 6 employ a full-welding process, with a weld height of no less than 6mm, effectively preventing resonance caused by external vibrations. Casters are installed at the bottom, allowing for flexible position adjustment when the equipment needs to be moved, and stable fixation can be achieved by raising the support legs when stationary. The frame module is equipped with an upper protective cover made of profile material, with an open rear structure for easy maintenance and debugging. Ventilation vents and intake / exhaust fans are located near the bottom chassis; the fans effectively dissipate heat generated by the control module, ensuring the stability of the machine's control system.

[0017] The motor drive module 1 is the core power source of the test bench, using a servo motor as the power output device. Motor drive module 1 is connected to transmission box module 2 via a flexible coupling. The flexible coupling design absorbs concentricity issues caused by machining errors, thereby reducing the impact of runout on test results. Motor drive module 1 provides a passive power source for the product under test, used to test input torque and output force performance. During actual testing, motor drive module 1 starts according to instructions from the industrial computer software, and power is transmitted through transmission box module 2 to the gearbox of the product under test, thus completing the entire testing process.

[0018] The transmission module 2 mainly consists of a helical gear assembly 21, bearings 22, and input and output shafts. The helical gear assembly is designed with high strength characteristics, ensuring high transmission efficiency and reducing noise under high-speed rotation conditions. The helical gear teeth are strengthened by heat treatment, and the tooth profile accuracy meets the level 5 tolerance requirement of ISO 1328 standard, ensuring stability and durability under high speed conditions. The helical gear assembly includes a main helical gear 211, driven helical gears 212 meshing with the main helical gear 211 and located on both sides of the main helical gear, and a mounting plate 213 for mounting the main helical gear and driven helical gear. The input shaft 23 and output shaft 24 are connected to the driven helical gears on both sides, and the driven helical gears are mounted with bearings, so as to effectively achieve rotation after mounting with the mounting plate and transmit rotation. The motor drive module 1 is connected to the input shaft. After the drive rotates, it drives the driven helical gear of the input shaft to rotate, thereby driving the main helical gear to rotate, and then drives the driven helical gear of the output shaft to rotate, thereby driving the output shaft to rotate. The output shaft is connected to the torque measurement module. The function of the transmission box module 2 is to transmit the power of the motor to the gearbox of the product under test to meet the high speed test requirements. In practical applications, the transmission box module 2 can adapt to different types of EMB brake motors, ensuring wide applicability of the test.

[0019] The torque testing module 3 mainly consists of a torque sensor 31 and a fixing fixture. The torque sensor connects to the transmission module of the product under test (DUT) and the gearbox of the DUT to the caliper end, respectively, for accurately monitoring input and output torque. The fixing fixture adopts a split structure design, with the clamping end adjusted via threads to achieve precise control of the clamping force, avoiding measurement errors caused by uneven clamping force. During actual testing, the torque testing module 3 collects real-time data on the motor input torque and the output torque of the gearbox of the DUT, and transmits the data to industrial computer software for analysis. The torque sensor's measurement accuracy reaches ±0.1%, ensuring the reliability of the test data.

[0020] Product installation module 4 includes a product fixing fixture 41 and a linear bearing module simulation component 42. The fixing fixture and ball screw mechanism installation fixture have positioning and error-proof functions to prevent product installation errors and ensure consistent product installation position during testing. The positioning pin holes of the fixing fixture are machined using high-precision CNC technology, with hole diameter tolerance controlled within ±0.02mm to ensure installation accuracy. In actual operation, the product under test is quickly installed into place using the fixing fixture, and the installation process can be completed without additional tools. Product installation module 4 supports rapid replacement of new products, and its modular design ensures that installation accuracy remains unaffected.

[0021] The linear bearing module simulation component 42 is connected to the execution end of the product under test. The linear bearing module simulation component 42 includes a first rigid coupling 421 connected to the output end of the product under test, a first torque sensor 422 connected to the first rigid coupling, a second rigid coupling 423 connected to the first torque sensor, a lead screw 424 connected to the second rigid coupling, and a bearing 425 connected to the lead screw. When driven, the lead screw rotates, thereby driving the bearing to move back and forth along the lead screw, thereby contacting the force sensor detection module 5 to test the output force.

[0022] The force sensor detection module 5 is mounted on the product mounting module 4 and includes a force sensor 51, a pre-compression workpiece 52, and a force sensor fixing rod 53. The design of the pre-compression workpiece makes the force value collected by the force sensor more accurate, and the fixing rod ensures that the force sensor is always positioned consistently. During actual testing, the ball screw inside the product under test pushes the force sensor detection module 5 to collect the output force. The force sensor detection module 5 is used to collect the output force of the ball screw of the product under test and provide feedback on its thrust performance. The pre-compression workpiece is made of an elastic material with an elastic modulus ranging from 200GPa to 220GPa, ensuring stable preload under different load conditions. The force sensor's measurement accuracy reaches ±0.2%, ensuring the reliability of the test data.

[0023] The working principle of the test bench is as follows: S1 The product under test is installed on the product mounting module 4 and precisely positioned using a fixing fixture. S2 The motor drive module 1 is started, and the power is transmitted to the gearbox of the product under test via the transmission box module 2 (usually a planetary gear or worm gear mechanism to generate sufficient force to clamp the brake disc). S3 The torque testing module 3 collects the input torque of the motor and the output torque of the gearbox of the product under test in real time. S4 The ball screw inside the product under test drives the force sensor detection module 5 to complete the acquisition of the output force. S5 The collected data is processed by industrial computer software to calculate whether the obtained parameters meet the requirements, thereby determining whether the product performance is qualified. The software algorithm is based on a multi-threaded architecture, which can process data acquisition tasks from multiple sensors simultaneously, and uses a filtering algorithm to remove noise interference to ensure the consistency of test results.

[0024] The advantages of this utility model are that, by combining the motor drive module and the transmission box module, the test bench can have both active and passive power source testing functions, which can be mutually verified and compared to improve the accuracy of the test. The design of the torque testing module and force sensor detection module enables precise monitoring of input torque and output force. The torque sensor achieves a measurement accuracy of ±0.1%, and the force sensor achieves a measurement accuracy of ±0.2%, ensuring the reliability of the test data. By leveraging mature software algorithms to integrate and analyze data, manual intervention can be reduced, thereby improving testing efficiency.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A testing device for automotive EMB performance testing, comprising a frame module, characterized in that: It also includes a motor drive module mounted on the frame module, a transmission box module connected to the motor drive module via a flexible coupling, a product mounting module connected to the transmission box module, a torque testing module mounted between the transmission box modules, and a force sensor detection module mounted on the product mounting module for detecting the product output force. The torque test module is used to monitor the torque from the motor drive module to the gearbox of the product under test and from the gearbox of the product under test to the caliper end of the product under test.

2. The testing device for automotive EMB performance testing according to claim 1, characterized in that: The transmission box module consists of a helical gear assembly, bearings, an input shaft, and an output shaft.

3. The testing device for automotive EMB performance testing according to claim 2, characterized in that: The helical gear assembly includes a main helical gear, driven helical gears that mesh with the main helical gear and are located on both sides of the main helical gear, and a mounting plate for mounting the main helical gear and the driven helical gears. The input shaft and the output shaft are respectively connected to the driven helical gears on both sides, and the driven helical gears are mounted by bearings.

4. The testing device for automotive EMB performance testing according to claim 1, characterized in that: The torque testing module includes a torque sensor and a fixing fixture. The torque sensor is connected to the motor to the transmission box module of the product under test and the gearbox of the product under test to the caliper end of the product under test.

5. The testing device for automotive EMB performance testing according to claim 1, characterized in that: The product installation module includes a product fixing fixture and a linear bearing module simulation component. The linear bearing module simulation component is connected to the execution end of the product under test. The linear bearing module simulation component includes a first rigid coupling connected to the output end of the product under test, a first torque sensor connected to the first rigid coupling, a second rigid coupling connected to the first torque sensor, a lead screw connected to the second rigid coupling, and a bearing connected to the lead screw.

6. The testing device for automotive EMB performance testing according to claim 1, characterized in that: The force sensor detection module is mounted on the product mounting module and includes a force sensor, a pre-pressed workpiece, and a force sensor fixing rod.

7. The testing device for automotive EMB performance testing according to claim 1, characterized in that: The bottom of the frame module is equipped with fuma wheels.

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