Working endurance test equipment for EMB calipers

Abstract

The utility model provides a work endurance test of EMB calipers, which relates to the technical field of equipment tests and comprises a test bench, an EMB caliper assembly, an EMB caliper test bench, an EMB caliper test bench and an EMB caliper test bench, the high and low temperature environment box covers a caliper body in the EMB caliper assembly; and the control cabinet is electrically connected with the EMB caliper assembly and the high and low temperature environment box. The beneficial effects are that through integration of the high and low temperature environment box, various temperature conditions possibly encountered by the EMB calipers in practical application can be accurately simulated. The environment simulation is beneficial to comprehensively evaluating the working performance and durability of the calipers at different temperatures, and the reliability of the calipers under extreme weather conditions is ensured.

Description

Technical Field

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

[0002] EMB calipers, or Electromechanical Brake calipers, are braking system components that use an electric motor to drive the brake calipers. As a core component of the braking system, they play a crucial role in effectively transmitting braking force from the brake caliper to the brake disc or brake drum. Through their internal structural design, EMB calipers can securely clamp the friction pads. When a braking signal is issued, the friction pads are pressed against the brake disc by the clamping device, generating friction to ensure reliable braking performance. Their stable and efficient performance directly affects the safety and reliability of the entire braking system.

[0003] However, existing technologies still have significant technical shortcomings in evaluating the performance of EMB calipers, especially in testing under high and low temperature conditions. Specifically, current testing methods and techniques often fail to comprehensively and accurately assess the mechanical efficiency of converting torque into clamping force in the drive mechanism of EMB calipers during braking. This efficiency assessment faces numerous challenges, particularly under high and low temperature conditions. Because the impact of environmental factors on EMB caliper performance is not fully considered, existing testing equipment and technologies often cannot provide accurate and reliable test data, thus limiting further optimization and improvement of EMB caliper performance.

[0004] Therefore, it is particularly urgent and important to develop a high and low temperature environment EMB caliper efficiency test bench that can simulate high and low temperature environmental conditions and accurately measure the mechanical efficiency of EMB calipers in converting torque into clamping force during braking. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a working durability testing device for EMB calipers, comprising:

[0006] Test bench, on which an EMB caliper assembly is mounted;

[0007] A high and low temperature environment chamber, which encloses the caliper body in the EMB caliper assembly;

[0008] The control cabinet is electrically connected to the EMB caliper assembly and the high and low temperature environment chamber.

[0009] Preferably, it also includes a torque sensor, which is installed in the EMB caliper assembly and is electrically connected to the control cabinet.

[0010] Preferably, it also includes a force sensor, which is disposed in the caliper body and electrically connected to the control cabinet.

[0011] Preferably, the control cabinet includes an industrial computer, an EMB power supply, data acquisition and control equipment, and a visual operation device;

[0012] The industrial control computer and the EMB caliper assembly are electrically connected via a CAN bus; the industrial control computer and the high and low temperature environment chamber are electrically connected; and the industrial control computer and the data acquisition and control equipment are electrically connected.

[0013] The EMB power supply provides operating power to the EMB caliper assembly.

[0014] Preferably, it also includes a current sensor for detecting the current when the EMB power supply provides operating power to the EMB caliper assembly, and the current sensor is electrically connected to the data acquisition and control device.

[0015] Preferably, it also includes a UPS power supply module, which is electrically connected to the industrial computer and the data acquisition and control equipment, and is used to provide uninterrupted power to the industrial computer and the data acquisition and control equipment.

[0016] Preferably, the visual operation device includes a display screen, keyboard, and mouse that are electrically connected to the industrial control computer.

[0017] Preferably, the EMB caliper assembly includes:

[0018] A servo motor is connected to the caliper body via a planetary reducer and a flexible coupling.

[0019] The EMB controller is electrically connected to the servo motor, the planetary reducer, and the caliper body, and is also electrically connected to the control cabinet.

[0020] It includes two of the aforementioned flexible couplings, with the torque sensor mounted between the two flexible couplings.

[0021] Preferably, the caliper body has a product flange at its bottom, and the flexible coupling has a flange at one end;

[0022] The product flange and the flange are connected by a drive shaft, and an environmental chamber sleeve is fitted around the drive shaft.

[0023] The above technical solution has the following advantages or beneficial effects: By integrating a high and low temperature environmental chamber, the device can accurately simulate various temperature conditions that EMB calipers may encounter in practical applications. This environmental simulation helps to comprehensively evaluate the working performance and durability of the calipers at different temperatures, ensuring their reliability under extreme climatic conditions. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an EMB caliper working durability testing device, which is a preferred embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the EMB caliper assembly in a preferred embodiment of the present invention. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The present invention is not limited to this embodiment; other embodiments that conform to the spirit of the present invention may also fall within its scope.

[0027] In a preferred embodiment of this utility model, based on the above-mentioned problems existing in the prior art, an EMB caliper working durability testing device is provided, comprising:

[0028] Test bench 2, on which EMB caliper assembly 1 is installed;

[0029] High and low temperature environment chamber 3, which encloses the caliper body 11 in the EMB caliper assembly 1;

[0030] Control cabinet 4 is electrically connected to EMB caliper assembly 1 and high and low temperature environment chamber 3.

[0031] Specifically, the EMB caliper converts the rotational motion of the motor into the linear motion of the friction pads, effectively transmitting braking force to the wheels. In this process, the strength and rigidity of the caliper are crucial to ensure accurate transmission of braking force and stable braking performance. Durability testing is a key means of verifying whether the EMB caliper can maintain stable performance under long-term, high-intensity use conditions. By simulating various working conditions in actual use, the durability, reliability, and stability of the caliper can be comprehensively evaluated. In this embodiment, the device integrates a high and low temperature environmental chamber 3, which can accurately simulate various temperature conditions that the EMB caliper may encounter in actual applications. This environmental simulation helps to comprehensively evaluate the caliper's working performance and durability at different temperatures, ensuring its reliability under extreme climatic conditions.

[0032] Control cabinet 4 serves as the control center of the equipment, enabling precise control and data collection of the EMB caliper assembly 1 and the high and low temperature environmental chamber 3. This not only improves testing efficiency but also ensures the accuracy and repeatability of test data, providing strong support for the research and development and optimization of EMB calipers.

[0033] In a preferred embodiment of this utility model, such as Figure 1 and 2 As shown, the EMB caliper assembly 1 includes:

[0034] Servo motor 12 is connected to caliper body 11 via planetary reducer 13 and flexible coupling 14.

[0035] EMB controller 15 is electrically connected to servo motor 12, planetary reducer 13 and caliper body 11, and is also electrically connected to control cabinet 4.

[0036] Specifically, the functions of each component in this embodiment are as follows:

[0037] Servo motor 12 is used to provide high-precision, fast-response power output to ensure precise control of braking force.

[0038] The planetary reducer 13 is used to amplify torque, has a compact structure and high transmission efficiency, and meets braking requirements.

[0039] The flexible coupling 14 is used for buffering and shock absorption, compensating for transmission errors, and protecting the transmission system from damage.

[0040] The EMB controller 15 is the brain of the entire EMB system, responsible for receiving the driver's braking commands (in this invention, the braking commands received are issued by the controller).

[0041] In a preferred embodiment of this utility model, such as Figure 2 As shown, it includes two flexible couplings 14; it also includes a torque sensor 16, which is installed between the two flexible couplings 14 and is electrically connected to the control cabinet 4.

[0042] Specifically, in this embodiment, two flexible couplings 14 and a torque sensor 16 are provided. By using the two flexible couplings 14 in series, minor displacements caused by installation errors, thermal expansion, etc., in the transmission system can be further compensated, ensuring the smoothness and accuracy of the transmission. This provides a dual buffering and shock absorption effect, more effectively absorbing and dispersing vibrations and impacts during the transmission process, protecting the entire transmission system, and extending its service life.

[0043] The torque sensor 16 is installed between the two flexible couplings 14, enabling real-time monitoring and precise measurement of the torque value during transmission, providing accurate feedback data to the control cabinet 4. The real-time data from the torque sensor 16 is uploaded to the control cabinet 4 for data acquisition. The torque changes detected by the torque sensor 16 (if the torque decreases during the test, the braking effect is worse; if the torque remains relatively constant, the braking effect is at a normal level; based on this principle, the torque at the beginning of the durability test can be compared with the torque during the durability test to determine the amount of torque reduction; the test data can also be recorded to obtain a curve with torque-test time as the horizontal and vertical axes to observe the torque change trend; the curve generation process can be achieved using conventional techniques, which will not be elaborated here) can reflect the changes in the response speed and braking efficiency of the EMB caliper throughout the entire durability test.

[0044] The torque sensor 16 can also be used to help detect abnormal conditions in the transmission system, such as overload or jamming, and issue early warning signals in a timely manner, so that maintenance personnel can quickly locate and solve the problem, thereby improving the reliability and safety of the system.

[0045] In summary, by adding two flexible couplings 14 and a torque sensor 16, the EMB caliper assembly 1 in this embodiment not only enhances the stability of the transmission and the damping effect, but also realizes real-time monitoring and optimized control of torque, thereby improving the overall performance and reliability of the braking system.

[0046] In a preferred embodiment of this utility model, the control cabinet 4 includes an industrial computer 41, an EMB power supply 42, a data acquisition and control device 43, and a visual operation device 44.

[0047] The industrial computer 41 and the EMB caliper assembly 1 are connected via a CAN bus. The industrial computer 41 is electrically connected to the high and low temperature environment chamber 3. The industrial computer 41 is also electrically connected to the data acquisition and control equipment 43.

[0048] EMB power supply 42 provides operating power to EMB caliper assembly 1.

[0049] In a preferred embodiment of the present invention, a force sensor 45 is further included. The force sensor 45 is disposed in the caliper body 11 and electrically connected to the data acquisition and control device 43.

[0050] In a preferred embodiment of the present invention, a current sensor 46 is further included to detect the current when the EMB power supply 42 provides working power to the EMB caliper assembly 1. The current sensor 46 is electrically connected to the data acquisition and control device 43.

[0051] Specifically, in this embodiment, the industrial control computer 41, as the core of the control cabinet 4, is responsible for receiving and processing signals from the EMB caliper assembly 1, the high and low temperature environment chamber 3, and the data acquisition and control equipment 43, so as to realize the overall data coordination during the durability test and generate test data reports.

[0052] The EMB (Electronic Braking System) applies pressure to the brake disc by driving the brake calipers with a motor. The accuracy of the motor's current control directly affects the magnitude of the braking torque and the response speed of the brake. Therefore, monitoring changes in current can indirectly reveal the motor's operating status and the output of braking force. For example, during braking, if greater braking force is required, the motor may need more current to drive it, thus increasing the pressure of the brake calipers on the brake disc. Conversely, if braking efficiency decreases, the motor may need more current to maintain the same braking force, or it may fail to achieve the expected braking force. In this case, changes in current reflect changes in braking efficiency.

[0053] Integrating a force sensor into the caliper body allows for a more direct reflection of changes in the braking efficiency of EMB calipers. The force sensor monitors the pressure applied by the caliper to the brake disc in real time, and this pressure directly determines the braking efficiency. If the pressure value displayed by the force sensor is stable and meets expectations, it indicates that the braking efficiency of the EMB caliper is stable. If the pressure value fluctuates significantly or is lower than expected, it may indicate a problem with the braking efficiency.

[0054] For data from current and force sensors, the data processing method for torque sensors can be referenced. By comparing the current / force at the beginning of the durability test with the current / force during the durability test, the change in current / force can be determined. The test data can also be recorded to obtain a curve with current / force - test time as the horizontal and vertical axes to observe the trend of current / force change.

[0055] Therefore, by combining the aforementioned embodiments, torque-test time curves, current-test time curves, and force-test time curves can be obtained to observe the changes in the response speed and braking efficiency of the EMB caliper throughout the entire durability test process. Furthermore, by adjusting the temperature of the high and low temperature chambers using a controller, torque-test time curves, current-test time curves, and force-test time curves at different temperatures can be obtained and compared to reflect the influence of temperature on the response speed and braking efficiency of the EMB caliper throughout the entire durability test process.

[0056] The signal connection between the CAN bus and the EMB caliper assembly 1 ensures high-speed and reliable data transmission. The CAN bus module is mainly used for communication and control with the EMB controller 15 in the EMB caliper assembly 1. It is compatible with CANFD, and the communication rate is controllable. The industrial computer 4 sends control commands to the EMB controller 15. The control commands include at least instructions on the magnitude of braking force, braking start, and braking end, and can be programmably implemented for cyclic control.

[0057] EMB power supply 42 provides a stable power supply to EMB caliper assembly 1, ensuring continuous and reliable operation of the braking system. It needs to provide a stable current supply under 12VDC conditions, with a maximum operating current of 100A.

[0058] The data acquisition and control device 43 is responsible for acquiring and processing signals from devices such as force sensor 45, current sensor 46, and torque sensor 16, providing rich data support for the industrial control computer 4.

[0059] Force sensor 45 is a strain gauge force sensor with a full-scale range of 100 kN, and torque sensor 16 is planned to be a high-precision torque sensor with a range of 100 Nm.

[0060] The visual operation device 44 provides a user-friendly human-machine interface, allowing operators to monitor the operating status of the braking system in real time, adjust control parameters, and improve the system's operability and ease of use.

[0061] In a preferred embodiment of the present invention, a UPS power supply module 47 is further included, which is electrically connected to the industrial computer 41 and the data acquisition and control device 43, and is used to provide uninterrupted power to the industrial computer 41 and the data acquisition and control device 43.

[0062] Specifically, in this embodiment, the data acquisition and control device 43 can be set as an independent device from the industrial control computer 41, and the acquired signals are then transmitted between the industrial control computer 41. In other preferred embodiments, the data acquisition and control software (which can be the existing durability test analysis software M&T Horizon to realize the functions of data acquisition, data analysis and report generation of force sensor, current sensor and torque sensor) can be directly installed in the industrial control computer 41 to realize the integration of the data acquisition and control device 43 and the industrial control computer 41.

[0063] In a preferred embodiment of the present invention, the visual operation device 44 includes a display screen, a keyboard, and a mouse that are electrically connected to the industrial control computer 41.

[0064] In a preferred embodiment of this utility model, such as Figure 2 As shown, the bottom of the caliper body 11 is provided with a product flange 17, and one end of the flexible coupling 14 is provided with a flange 18.

[0065] Product flange 17 and flange 18 are connected by a drive shaft 19, and an environmental chamber sleeve 10 is fitted on the outside of the drive shaft 19.

[0066] Specifically, the environmental chamber sleeve 10 is located outside the drive shaft 19, which can effectively protect the drive shaft 19 from the extreme temperature conditions inside the high and low temperature environmental chamber 3. This protection can prevent the drive shaft from undergoing excessive deformation or damage due to thermal expansion and contraction, thereby ensuring the stability and reliability of the transmission.

[0067] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made using the content of this specification and illustrations should be included within the protection scope of the present utility model.

Claims

1. A working durability testing device for EMB calipers, characterized in that, include: Test bench, on which an EMB caliper assembly is mounted; A high and low temperature environment chamber, which encloses the caliper body in the EMB caliper assembly; The control cabinet is electrically connected to the EMB caliper assembly and the high and low temperature environment chamber.

2. The working durability testing equipment according to claim 1, characterized in that, It also includes a force sensor, which is disposed in the caliper body and electrically connected to the control cabinet.

3. The working durability testing equipment according to claim 1, characterized in that, It also includes a torque sensor, which is installed in the EMB caliper assembly and is electrically connected to the control cabinet.

4. The working durability testing equipment according to claim 3, characterized in that, The EMB caliper assembly includes: A servo motor is connected to the caliper body via a planetary reducer and a flexible coupling, including two flexible couplings, and a torque sensor is installed between the two flexible couplings. The EMB controller is electrically connected to the servo motor, the planetary reducer, and the caliper body, and is also electrically connected to the control cabinet.

5. The working durability testing equipment according to claim 1, characterized in that, The control cabinet includes an industrial computer, an EMB power supply, data acquisition and control equipment, and a visual operation device. The industrial control computer and the EMB caliper assembly are electrically connected via a CAN bus; the industrial control computer and the high and low temperature environment chamber are electrically connected; and the industrial control computer and the data acquisition and control equipment are electrically connected. The EMB power supply provides operating power to the EMB caliper assembly.

6. The working durability testing equipment according to claim 5, characterized in that, It also includes a current sensor for detecting the current when the EMB power supply provides operating power to the EMB caliper assembly, and the current sensor is electrically connected to the data acquisition and control device.

7. The working durability testing equipment according to claim 5, characterized in that, It also includes a UPS power supply module, which is electrically connected to the industrial computer and the data acquisition and control equipment, and is used to provide uninterrupted power to the industrial computer and the data acquisition and control equipment.

8. The working durability testing equipment according to claim 5, characterized in that, The visual operation device includes a display screen, keyboard, and mouse that are electrically connected to the industrial control computer.

9. The working durability testing equipment according to claim 4, characterized in that, The caliper body is provided with a product flange at the bottom, and the flexible coupling is provided with a flange at one end. The product flange and the flange are connected by a drive shaft, and an environmental chamber sleeve is fitted around the drive shaft.

Images