Integrated electronic brake system assembly electrical performance test platform

Abstract

An integrated electronic brake system assembly electrical performance test platform disclosed by the present invention comprises a complete machine frame and a test execution mechanism, the test execution mechanism comprises a base plate, a clamping tool and a thrust test tool are installed on the base plate, the clamping tool comprises two clamping blocks and a positioning bottom block, the two clamping blocks are slidably installed on the base plate, and the thrust test tool is installed on the positioning bottom block. The positioning bottom block is used for supporting an assembly workpiece, the clamping blocks are internally provided with open cavities, the two clamping blocks are configured to be close to each other to slide and clamp the assembly workpiece through the open cavities, the clamping stability is improved, and the clamping blocks are matched with a thrust testing tool to perform force application testing on a push rod of the assembly workpiece. According to the invention, the test of related data can be automatically carried out only by connecting the assembly workpiece with the corresponding signal receiving equipment through the line and the pipeline, the working states of the assembly workpiece in different temperature environments can be simulated through the arrangement of the interlayer and the cooperation of the input pipe and the output pipe, and the diversification of the test data is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile manufacturing, and in particular to an integrated electronic brake system assembly electrical performance test platform. Background Art

[0002] With the rapid development of the automotive industry and the gradual improvement of technological levels, the demand for automobiles has increased significantly. Safety is an eternal pursuit of the automotive industry. Traffic accidents are frequent, causing huge personal safety and economic losses. Therefore, with the annual advancement of global technology, the requirements for active driving safety are also becoming increasingly higher. The highly integrated braking control system (IBC) has emerged with the increasing requirements of intelligent automotive equipment. As an integrated unit, IBC replaces a large number of independent automotive components including the electronic stability control system (ESC), electronic controller, sensors, vacuum booster, related cables, switches, vacuum pumps, etc., and has more than 20 functions including full ESC functions, dual MCU redundancy design, functional safety ASIL-D level, RBU redundant backup and mechanical brake backup to ensure driving brake safety, and dual-control EPB to ensure parking brake safety. The integrated electronic braking system (IBC system) has been widely used in modern automobiles due to its high degree of integration, rapid response, and precise control. However, the electrical performance of the IBC assembly is directly related to the vehicle's braking safety and performance. The integrated electronic braking system has a complex structure and a harsh working environment. Comprehensive and accurate testing of its electrical performance has become a technical challenge. It is particularly important to conduct comprehensive and efficient electrical performance testing at the end of the production line. Summary of the Invention

[0003] The purpose of the present invention is to provide an integrated electronic brake system assembly electrical performance test platform, which can effectively perform simulation tests on the integrated electronic brake system assembly under multiple working conditions, thereby improving the overall production capacity and product quality of the production line.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: an integrated electronic brake system assembly electrical performance test platform, including a whole machine frame and a test execution mechanism installed in the whole machine frame, the test execution mechanism includes a substrate, a clamping tool and a thrust test tool are installed on the substrate, the clamping tool includes two clamping blocks and a positioning bottom block, the two clamping blocks are located on both sides of the positioning bottom block, and are both slidably installed on the substrate, the positioning bottom block is used to support the assembly workpiece, an open cavity is provided in the clamping block, the two clamping blocks are configured to slide close to each other to clamp and embrace the assembly workpiece through the open cavity, or slide away from the assembly workpiece conversely; and the push rod of the assembly workpiece extends out of the clamping tool when the two clamping blocks are in an embraced state, and is connected to the thrust test tool, and the thrust test tool is used to control the push rod to move in the direction of the push rod axis.

[0005] Preferably, a sandwich is provided in the clamping block, and the sandwich covers the corresponding open cavity area. At least one of the clamping blocks is provided with an input pipe and an output pipe of two barrel sandwiches, and when the two clamping blocks are embraced, the sandwiches of the two clamping blocks are connected.

[0006] Preferably, the thrust testing tooling includes an electric telescopic cylinder and a connecting rod, and a multi-mode adjustment structure. The telescopic end of the electric telescopic cylinder is connected to the connecting rod through the multi-mode adjustment structure, and the connecting rod is spliced ​​with the push rod of the assembly workpiece; the multi-mode adjustment structure is configured to control the connecting rod to move synchronously with the telescopic end of the electric telescopic cylinder, or to control the connecting rod to move in steps, and the push rod can move back freely between two connected stepping actions.

[0007] Preferably, the multi-mode adjustment structure includes: A center rod, one end of which is connected to the connecting rod, and a rigid limit block and an elastic limit block group are provided on the center rod along the circumference, wherein the elastic limit block group includes a plurality of elastic limit blocks arranged at intervals along the circumference of the center rod; An outer sleeve, one end of which is sleeved on the other end of the center rod, and the center rod slides in the outer sleeve; the other end of the outer sleeve is connected to the telescopic end of the electric telescopic cylinder; a bump is installed in the outer sleeve; and The outer sleeve is configured to rotate as a whole or partially so that the protrusion corresponds to the rigid limiting block, or so that the protrusion corresponds to the elastic limiting block.

[0008] Preferably, two groups of elastic limiting blocks are provided on the central rod, and the two groups of elastic limiting blocks have different numbers of elastic limiting blocks along the circumferential direction of the central rod.

[0009] Preferably, a turntable is installed at the bottom of the substrate, and the turntable is used to control the rotation of the substrate.

[0010] Preferably, a pitch adjustment structure is installed at the bottom of the substrate, and the pitch adjustment structure is configured to dynamically adjust the pitch angle between the substrate and the horizontal plane.

[0011] Preferably, a turntable is installed at the bottom of the base plate, and the pitch adjustment structure is installed between the turntable and the frame table of the whole machine. The bottom of the turntable is movably connected with a rotating shaft, and the rotating shaft is used to drive the turntable to rotate. The pitch adjustment structure includes at least one circle of airbags located at the bottom of the turntable, and the airbags are divided into several sections, and each section of the airbag is independently connected to an external air pump. Beneficial effects: The present invention utilizes two clamping blocks to perform an embracing clamping on the assembly workpiece, thereby improving the stability of the clamping, and in conjunction with the thrust testing tooling, can perform force testing on the push rod of the assembly workpiece. By simply connecting the assembly workpiece to the corresponding signal receiving device through lines and pipes, the relevant data can be automatically tested, thereby improving the detection efficiency and accuracy, and significantly improving the accuracy and efficiency of the IBC assembly electrical performance test. The interlayer setting, in conjunction with the input and output pipes, can input refrigerant / gas, or heating liquid / gas, to simulate the working state of the assembly workpiece under different temperature environments. Testing in multiple environments is realized, the diversity of test data is improved, and the entire process is automated, thereby improving the overall production capacity and product quality of the production line.

[0012] Through the function of the multi-mode adjustment structure, the present invention can control the connecting rod to move synchronously with the telescopic end of the electric telescopic cylinder to perform linear thrust testing, or control the connecting rod to move in steps and move back in stages, simulating the continuous stepping and lifting of the pedal in reality, simulating the working state of the assembly workpiece in the actual process in a more realistic and diverse way, and improving the test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0014] In the attached figure: Figure 1 It is a structural schematic diagram of the integrated electronic brake system assembly electrical performance test platform of the present invention; Figure 2 It is a side view of the integrated electronic brake system assembly electrical performance test platform of the present invention; Figure 3 1. It is a top view of the integrated electronic brake system assembly electrical performance test platform of the present invention; Figure 4 It is a structural diagram of the test execution mechanism of the present invention; Figure 5 It is a structural schematic diagram of the multi-mode regulation structure of the present invention; Figure 6It is a structural schematic diagram of multiple sets of elastic limit block groups of the present invention; Figure 7 It is a structural schematic diagram of the turntable and pitch adjustment structure of the present invention; Numbers in the figure: 1. Whole machine frame; 21. Base plate; 221. Clamping block; 222. Positioning bottom block; 223. Open cavity; 224. Interlayer; 225. Input pipe; 226. Output pipe; 227. Insert pipe; 23. Slide; 31. Electric telescopic cylinder; 32. Connecting rod; 331. Center rod; 332. Outer sleeve; 333. Rigid limit block; 334. Elastic limit block; 335. Bump; 4. Turntable; 5. Rotating shaft; 6. Airbag; 7. Partition. DETAILED DESCRIPTION

[0015] The following describes the embodiments of the present invention in conjunction with the accompanying drawings. The terms used in the embodiments of the present invention are only used to explain the specific embodiments of the present invention and are not intended to limit the present invention. The following describes the embodiments of the present application in conjunction with the accompanying drawings.

[0016] An integrated electronic brake system assembly electrical performance test platform, reference Figure 1-Figure 3 As shown, it includes a whole machine frame 1 and a test actuator installed in the whole machine frame 1. The whole machine frame 1 can be equipped with a host computer, a motor cabinet and an electric control panel, a lighting lamp, an indicator light and an air source processor according to test requirements, as well as related equipment and sensors for testing the motor initial angle, servo cylinder stroke, displacement and pressure sensor function, wheel speed, electromagnetic coil, pump motor, function indicator light and function switch, etc., which can be equipped according to specific test conditions; The test actuator includes a base plate 21, on which a clamping fixture and a thrust test fixture are installed. The clamping fixture includes two clamping blocks 221 and a positioning bottom block 222. The two clamping blocks 221 are located on both sides of the positioning bottom block 222 and are both slidably installed on the base plate 21. The positioning bottom block 222 is used to support the assembly workpiece. An open cavity 223 is provided in the clamping block 221. The two clamping blocks 221 are configured to slide close to each other and clamp the assembly workpiece through the open cavity 223, or slide away from the assembly. Assembled workpiece; For the connection of the assembly workpiece, a connector can be set in the open cavity 223 at a position corresponding to the assembly workpiece interface, which is automatically plugged in when the two clamping blocks 221 are embraced, or a hole can be set on the clamping block 221, and the assembly workpiece interface is connected through an external pipe and a line hole to obtain relevant data of the assembly workpiece during the test; The push rod of the assembly workpiece extends out of the clamping fixture when the two clamping blocks 221 are in an embraced state, and is connected to the thrust test fixture, which is used to control the movement of the push rod in the direction of the push rod axis.

[0017] During the test, the assembly workpiece is placed on the positioning bottom block 222, and then the two clamping blocks 221 are controlled to approach each other and clamp and embrace the positioning bottom block 222. For the movement of the clamping blocks 221, a slide 23 can be set on the base plate 21. Each clamping block 221 is installed in the slide 23 through a slider. The movement of the slider can be controlled by conventional driving methods such as screw rods and nuts to control the two clamping blocks to move closer to or away from each other along the slide 23. After the assembly workpiece is clamped, the pipelines and lines are connected, and the power-on test is carried out; the push rod is pushed to move by controlling the thrust test tooling; and the test is carried out. During the process, relevant data of the assembly workpiece are collected; for example: the upper computer can collect current values ​​through corresponding current sensors to determine whether the relevant functional circuits are qualified. The upper computer controls the corresponding valves to operate in sequence, respectively judge the current range, and determine the effectiveness of the coil. The EPB switch can also be used to control the clamping and release of the electronic parking caliper. The two current sensors connected to the positive and negative poles of the caliper collect the CAN messages of the caliper motor current value, the clamping voltage value of the friction plate strain sensor, the EPB switch status and the left and right caliper current, and the clamping and release caliper test status to determine whether the IBC related functions are qualified.

[0018] In one embodiment, reference Figure 4 As shown, a sandwich 224 is provided in the clamping block 221, and the sandwich 224 covers the corresponding open cavity 223 area. At least one clamping block 221 is provided with an input pipe 225 and an output pipe 226 of the two sandwiches 224. When the two clamping blocks 221 are embraced, the sandwiches 224 of the two clamping blocks 221 are connected. by Figure 4 For example, an input pipe 225 and an output pipe 226 are set on a right clamping block 221, and then a plug 227 connecting the interlayer 224 is set on the left clamping block 221, and a socket connecting the interlayer 224 is set on the corresponding right clamping block 221 (not shown in the figure, the position corresponds to the plug 227). When the two clamping blocks 221 are close to each other, the plug 227 is inserted into the socket to connect the interlayer 224 inside the two clamping blocks 221. In order to improve the guidance of airflow or liquid, one or more channels can also be planned in the interlayer 224 through partitions (not shown in the figure, channels for guiding the flow of gas or liquid can be formed by setting partitions and other structures in the interlayer 224); cooling or heating airflow or liquid enters through the input pipe 225, and then flows out from the output pipe 226 after being clamped in the two clamping blocks 221, thereby realizing temperature regulation in the open cavity 223 to control the test of the open cavity 223 under different temperature environments.

[0019] In one embodiment, reference Figure 4As shown, the thrust test fixture includes an electric telescopic cylinder 31 and a connecting rod 32, as well as a multi-mode adjustment structure. The telescopic end of the electric telescopic cylinder 31 is connected to the connecting rod 32 via the multi-mode adjustment structure. The connecting rod 32 is spliced ​​with the push rod of the assembly workpiece. The multi-mode adjustment structure is configured to control the connecting rod 32 to move synchronously with the telescopic end of the electric telescopic cylinder 31, or to control the connecting rod 32 to move in steps, and the push rod can move back freely between two consecutive stepping movements. The following two modes can be used for testing: Mode 1, continuous drive, controls the synchronous movement of the connecting rod 32 through the multi-mode adjustment structure, thereby simulating the situation where the pedal is continuously pressed down or continuously lifted; Mode 2, discrete drive, controls the connecting rod 32 to move forward step by step through a multi-mode adjustment structure, and between two steps, the connecting rod 32 can move back freely under the action of the push rod, simulating the continuous stepping and lifting of the pedal in reality; thereby obtaining diverse data.

[0020] Further, in a specific embodiment, referring to Figure 4-Figure 6 As shown, the multi-mode adjustment structure includes a center rod 331 and a sleeve 332, one end of the center rod 331 is connected to the connecting rod 32, and the other end is inserted into the sleeve 332 and slidably arranged in the sleeve 332; and a rigid limit block 333 and an elastic limit block 334 group are circumferentially arranged on the center rod 331, and the elastic limit block 334 group includes a plurality of elastic limit blocks 334 arranged at intervals along the circumferential direction of the center rod 331; the other end of the sleeve 332 is connected to the telescopic end of the electric telescopic cylinder 31; a protrusion 335 is installed in the sleeve 332; and the sleeve 332 is configured to rotate as a whole or partially so that the protrusion 335 corresponds to the rigid limit block 333, or so that the protrusion 335 corresponds to the elastic limit block 334.

[0021] Mode 1: By rotating the outer sleeve 332 so that the protrusion 335 corresponds to the rigid limit block 333, when the telescopic end of the telescopic cylinder pushes the outer sleeve 332 to move, the protrusion 335 acts on the rigid limit block 333, synchronously pushing the center rod 331 to move, thereby synchronously pushing the push rod to move; Mode 2, by rotating the outer sleeve 332, the protrusion 335 corresponds to the elastic limit block 334. At this time, when the telescopic end of the telescopic cylinder pushes the outer sleeve 332 to move, the center rod 331 and the outer sleeve 332 are first moved synchronously under the elastic force of the elastic limit block 334 itself. Since the push rod in the assembly workpiece is equipped with a spring, the resistance of the connecting rod 32 will increase with continuous pushing. Therefore, when the resistance reaches a certain value, the elastic limit block 334 is deformed, and the protrusion 335 is separated from the elastic limit block 334 and moves toward the next elastic limit block 334. Then the push rod will move back under the action of its own spring until the protrusion 335 contacts the next elastic limit block 334. The above operation is repeated to simulate the action of continuously stepping on and lifting the pedal; wherein, the force exerted on the deformation of each elastic limit block 334 can be the same or different.

[0022] As for the rotation of the outer sleeve 332, one end thereof is rotatably connected to the telescopic end of the telescopic cylinder. The outer sleeve 332 can be rotated manually before the test, or a motor can be installed at the rotation connection and controlled by the upper computer for controlled driving.

[0023] For further reference, Figure 6 As shown, two groups of elastic limit blocks 334 are provided on the center rod 331, and the two groups of elastic limit blocks 334 have different numbers of elastic limit blocks 334 along the circumferential direction of the center rod 331; by corresponding the protrusions 335 to different groups of elastic limit blocks 334, different frequencies of stepping can be simulated.

[0024] In one embodiment, reference Figure 7 As shown, a turntable 4 is mounted at the bottom of base plate 21 for controlling its rotation. A pitch adjustment mechanism is also mounted at the bottom of base plate 21 for dynamically adjusting the pitch angle of base plate 21 relative to the horizontal plane. During testing, turntable 4 can be controlled to rotate to simulate vehicle body sway, and / or the pitch adjustment mechanism can be used to adjust the pitch angle of base plate 21 to simulate different slopes. This allows for simulated testing under various operating conditions. Compared to single static testing, dynamic multi-environment testing more realistically reproduces the actual operating conditions of the assembly workpiece, thereby obtaining more realistic data.

[0025] In one embodiment, reference Figure 7As shown, a turntable 4 is installed at the bottom of the base plate 21, and a pitch adjustment structure is installed between the turntable 4 and the table top of the whole machine frame 1. A rotating shaft 5 is movably connected to the center of the bottom of the turntable 4, for example, it is connected through a universal joint. The rotating shaft 5 is used to drive the turntable 4 to rotate, and the pitch adjustment structure includes at least one circle of air bags 6 located at the bottom of the turntable 4, and the air bags 6 are divided into several sections by partitions 7. Each section of the air bags 6 is independently connected to an external air pump; a driving motor is configured on the rotating shaft 5, and the rotation of the rotating shaft 5 is controlled by the driving motor, thereby driving the turntable 4 to rotate, and the air pump is used to inflate and discharge air into each section air bag 6, thereby adjusting the expansion of different section air bags 6, and then adjusting the pitch angle of the turntable 4 and the base plate 21. In addition, the pitch adjustment structure is not limited to the air bag 6, and the pitch adjustment can be achieved through other structures, such as control by multiple telescopic cylinders.

[0026] The above describes the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. After knowing the contents described in the present invention, ordinary technicians in this technical field can make several equivalent changes and substitutions without departing from the principles of the present invention. These equivalent changes and substitutions should also be regarded as falling within the scope of protection of the present invention.

Claims

1. An integrated electronic brake system assembly electrical performance test platform, characterized by: The test actuator comprises a whole machine frame and a test actuator installed in the whole machine frame, the test actuator comprises a base plate, a clamping fixture and a thrust test fixture are installed on the base plate, the clamping fixture comprises two clamping blocks and a positioning bottom block, the two clamping blocks are located on both sides of the positioning bottom block and are both slidably installed on the base plate, the positioning bottom block is used to support the assembly workpiece, an open cavity is provided in the clamping block, and the two clamping blocks are configured to slide close to each other to clamp the assembly workpiece through the open cavity, or to slide away from the assembly workpiece; Furthermore, the push rod of the assembly workpiece extends out of the clamping fixture when the two clamping blocks are in an embracing state, and is connected to a thrust testing fixture, and the thrust testing fixture is used to control the push rod to move in the direction of the push rod axis.

2. The integrated electronic brake system assembly electrical performance test platform according to claim 1, characterized in that: An interlayer is provided in the clamping block, and the interlayer covers the corresponding open cavity area. At least one of the clamping blocks is provided with an input pipe and an output pipe of two barrel interlayers, and when the two clamping blocks are embraced, the interlayers of the two clamping blocks are connected.

3. The integrated electronic brake system assembly electrical performance test platform according to claim 1, characterized in that: The thrust testing tooling includes an electric telescopic cylinder and a connecting rod, as well as a multi-mode adjustment structure. The telescopic end of the electric telescopic cylinder is connected to the connecting rod through the multi-mode adjustment structure, and the connecting rod is spliced ​​with the push rod of the assembly workpiece; the multi-mode adjustment structure is configured to control the connecting rod to move synchronously with the telescopic end of the electric telescopic cylinder, or to control the connecting rod to move in steps, and the push rod can move back freely between two consecutive stepping actions.

4. The integrated electronic brake system assembly electrical performance test platform according to claim 3, characterized in that: The multi-mode regulation structure includes: A center rod, one end of which is connected to the connecting rod, and a rigid limit block and an elastic limit block group are provided on the center rod along the circumference, wherein the elastic limit block group includes a plurality of elastic limit blocks arranged at intervals along the circumference of the center rod; An outer sleeve, one end of which is sleeved on the other end of the center rod, and the center rod slides in the outer sleeve; the other end of the outer sleeve is connected to the telescopic end of the electric telescopic cylinder; a bump is installed in the outer sleeve; and The outer sleeve is configured to rotate as a whole or partially so that the protrusion corresponds to the rigid limiting block, or so that the protrusion corresponds to the elastic limiting block.

5. The integrated electronic brake system assembly electrical performance test platform according to claim 4, characterized in that: Two groups of elastic limiting blocks are provided on the central rod, and the two groups of elastic limiting blocks have different numbers of elastic limiting blocks along the circumferential direction of the central rod.

6. The integrated electronic brake system assembly electrical performance test platform according to claim 1, characterized in that: A turntable is installed at the bottom of the substrate, and the turntable is used to control the rotation of the substrate.

7. An integrated electronic brake system assembly electrical performance test platform according to claim 1 or 6, characterized in that: A pitch adjustment structure is installed at the bottom of the base plate, and the pitch adjustment structure is configured to dynamically adjust the pitch angle between the base plate and the horizontal plane.

8. The integrated electronic brake system assembly electrical performance test platform according to claim 7, characterized in that: A turntable is installed at the bottom of the base plate, and a pitch adjustment structure is installed between the turntable and the frame table of the entire machine. A rotating shaft is movably connected to the bottom of the turntable, and the rotating shaft is used to drive the turntable to rotate. The pitch adjustment structure includes at least one circle of airbags located at the bottom of the turntable, and the airbags are divided into several sections, and each section of the airbag is independently connected to an external air pump.

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