Detection device of vehicle chassis system

Abstract

The invention provides a detection device for a vehicle chassis system, and relates to the field of detection. The detection device of the vehicle chassis system comprises an air supply assembly, one end of the air supply assembly is communicated with an external air source, and the other end of the air supply assembly is communicated with an air inlet end of a detected chassis air path system; the air tightness detection assembly comprises a plurality of air inlet assemblies and a plurality of detection modules, the air inlet end of each air inlet assembly is communicated with the air outlet end of the detected chassis air path system, each air inlet assembly is provided with at least one detection module, and the detection modules are used for obtaining air pressure signals of the corresponding air inlet assemblies; and the air tightness detection assembly judges the air tightness of the detected air path system based on the air pressure signal. Through the detection mode, the tightness of the chassis gas path system of the whole vehicle can be detected before the whole vehicle falls on the vehicle body or after the chassis gas path system is assembled, the use is convenient, and the cost is saved.

Description

Technical Field

[0001] The present invention relates to the field of detection, and in particular to a detection device for a vehicle chassis system. Background Art

[0002] For new energy commercial vehicles, the air pump is a high-voltage component. It can only be powered and work after the high-voltage debugging of the whole vehicle. The sealing and functional testing of the whole vehicle's air circuit system is delayed. Since the new energy vehicle model has a compact layout and a high degree of system modular integration, the air circuit system is assembled before other systems. During the debugging stage, it is difficult to troubleshoot problems with the air circuit system, and it is difficult to solve the problems. There is a lack of detection systems and methods that can intervene in advance.

[0003] Based on the problems existing in the prior art, there is currently no better solution. Summary of the invention

[0004] The main purpose of the present invention is to provide a detection device for a vehicle chassis system to solve the problem in the prior art that the entire vehicle air circuit system cannot be detected in advance.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a detection device for a vehicle chassis system is provided. The detection device for a vehicle chassis system comprises: an air supply component, one end of which is connected to an external air source, and the other end of which is connected to an air inlet end of a chassis air circuit system to be tested; an air tightness detection component, which comprises a plurality of air inlet components and a plurality of detection modules, the air inlet end of each air inlet component is connected to an air outlet end of the chassis air circuit system to be tested, and each air inlet component is provided with at least one detection module, the detection module is used to obtain an air pressure signal of the corresponding air inlet component, and the air tightness detection component determines the air tightness of the air circuit system to be tested based on the air pressure signal.

[0006] Furthermore, the detection device of the vehicle chassis system also includes: a braking detection component, the braking detection component includes multiple braking control components, the multiple braking control components are arranged in a one-to-one correspondence with the multiple air intake components, one end of each braking control component is connected to the first air outlet end of the corresponding air intake component, and the other end of each braking control component is connected to the chassis braking system under test, and each braking control component is used to control the chassis braking system under test to brake.

[0007] Furthermore, the detection device of the vehicle chassis system includes a box body, and each air intake component includes: an air intake connector, which is arranged on the box body, and the air outlet end of the chassis air circuit system under test is connected to one end of each air intake connector, wherein the chassis air circuit system under test includes at least one of the following: rear axle air circuit, front axle air circuit, parking air circuit, and trailer air circuit.

[0008] Furthermore, each air intake component also includes: a first air intake branch, the air intake end of the first air intake branch is connected to the other end of the air intake connector; a second air intake branch, the second air intake branch is arranged in parallel with the first air intake branch, and a detection module is provided on the second air intake branch, and the detection module is used to collect the first air pressure value of the second air intake branch.

[0009] Furthermore, the gas supply component includes: a gas supply pipeline, one end of which is connected to an external gas source, and a gas supply pipeline detection module is provided on the gas supply pipeline, and the gas supply pipeline detection module is used to collect a second air pressure value of the external gas source.

[0010] Furthermore, the airtightness detection component also includes: a control module, which is arranged in the box body, the control module is electrically connected to each detection module and the air supply path detection module, and the control module receives the first air pressure value and the second air pressure value; a display module, the display module is arranged on the box body, the display module is electrically connected to the control module, and the display module is used to display the first air pressure value and the second air pressure value.

[0011] Furthermore, each brake control component includes: a control joint, which is arranged on the box body, and one end of the chassis brake system under test is connected to the control joint, wherein the chassis brake system under test includes at least one of the following: a rear axle brake system, a front axle brake system, a parking brake system, and a trailer brake system.

[0012] Furthermore, each brake control component also includes: a brake branch, one end of the brake branch is connected to the other end of the control joint, and the other end of the brake branch is connected to the first outlet end of the first air intake branch; a solenoid valve, the solenoid valve is arranged on the brake branch, when the solenoid valve is opened, the air pressure of the first air intake branch is connected to the chassis brake system under test through the brake branch, so that the chassis brake system under test is braked.

[0013] Furthermore, the detection device of the vehicle chassis system also includes: a control switch component, the control switch component is electrically connected to the plurality of solenoid valves, and the control switch component is used to control the on and off of each solenoid valve.

[0014] Furthermore, the detection device of the vehicle chassis system also includes an exhaust component, which includes: an exhaust joint, which is arranged on the box body, and one end of the exhaust joint is connected to the air collecting device; a plurality of first exhaust branches, one end of each first exhaust branch is connected to the second outlet end of each first intake branch; a second exhaust branch, one end of the second exhaust branch is connected to the other end of each first exhaust branch, and the other end of the second exhaust branch is connected to the other end of the exhaust joint; an exhaust valve assembly, which is arranged on the second exhaust branch, and the exhaust valve assembly is electrically connected to the control switch assembly, and the control switch assembly is used to control the on and off of the exhaust valve assembly. When the exhaust valve assembly is opened, the air pressure of the first intake branch is discharged through the first exhaust branch and the second exhaust branch.

[0015] By applying the technical solution of the present invention, an air supply component is provided to connect to an external air source to supply air to the chassis air path system under test, and at the same time, an air intake component of the air tightness detection component is connected to the chassis air path system under test, and an air pressure signal of the air intake component is detected by a detection module to indirectly determine whether the chassis air path system under test has leakage or blockage, thereby completing the air tightness detection of the chassis air path system under test. This detection method can be used to perform a sealing detection on the chassis air path system of the entire vehicle before the vehicle is installed on the vehicle body or after the chassis air path system is assembled, which is easy to use and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic structural diagram of a detection device for a vehicle chassis system according to the present invention is shown;

[0018] Figure 2 An enlarged structural schematic diagram showing a partial structure of a detection device for a vehicle chassis system according to the present invention.

[0019] The above drawings include the following reference numerals:

[0020] 10. Air supply assembly;

[0021] 11. Air supply pipeline; 12. Air supply detection module; 13. Air supply control valve; 14. Air supply mechanical switch; 15. Air source interface; 16. Air supply quick connector; 17. Air handling unit transition connector;

[0022] 20. Air tightness detection component;

[0023] 21. air intake assembly; 211. air intake connector; 212. first air intake branch; 213. second air intake branch;

[0024] 22. Detection module;

[0025] 23. Control module;

[0026] 24. Display module;

[0027] 30. Braking detection component;

[0028] 31. Braking control assembly; 311. Control joint; 312. Braking branch; 313. Solenoid valve;

[0029] 40. Box body;

[0030] 50. Exhaust assembly;

[0031] 51. Exhaust connector;

[0032] 52. The first exhaust branch;

[0033] 53. Second exhaust branch;

[0034] 54. Exhaust valve assembly;

[0035] 60. Control switch assembly;

[0036] 70. Line docking connector;

[0037] 80. Main circuit switch. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0041] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0042] Combination Figure 1 and Figure 2 As shown, according to a specific embodiment of the present invention, a detection device for a vehicle chassis system is provided.

[0043] Specifically, Figure 1 , Figure 2 As shown, the detection device of the vehicle chassis system includes: an air supply component 10, one end of the air supply component 10 is connected to an external air source, and the other end of the air supply component 10 is connected to the air inlet end of the chassis air circuit system under test; an air tightness detection component 20, the air tightness detection component 20 includes a plurality of air intake components 21 and a plurality of detection modules 22, the air intake end of each air intake component 21 is connected to the air outlet end of the chassis air circuit system under test, and each air intake component 21 is provided with at least one detection module 22, and the detection module 22 is used to obtain the air pressure signal of the corresponding air intake component 21, and the air tightness detection component 20 determines the air tightness of the air circuit system under test based on the air pressure signal.

[0044] In this embodiment, an air supply component 10 is provided to connect to an external air source to supply air to the chassis air circuit system under test. At the same time, the air intake component 21 of the air tightness detection component 20 is connected to the chassis air circuit system under test. The air pressure signal of the air intake component 21 is detected by the detection module 22 to indirectly determine whether the chassis air circuit system under test has leakage or blockage, thereby completing the air tightness detection of the chassis air circuit system under test. This detection method can be used to perform a sealing test on the chassis air circuit system of the entire vehicle before the vehicle is installed on the body or after the chassis air circuit system is assembled. It is easy to use and saves costs.

[0045] It should be noted that the air supply component 10 mainly uses an external air source to supply air to the air handling unit of the whole vehicle, and the air handling unit then supplies air to the chassis air system under test. The air supply component 10 is provided with an air supply solenoid valve and an air pressure sensor, which are responsible for the on-off control of the air supply pipeline and the transmission of air pressure signals. In addition, a mechanical valve is also provided in the channel to protect the air supply channel.

[0046] Furthermore, the detection device of the vehicle chassis system also includes: a braking detection component 30, the braking detection component 30 includes multiple braking control components 31, the multiple braking control components 31 are arranged in a one-to-one correspondence with the multiple air intake components 21, one end of each braking control component 31 is connected to the first air outlet end of the corresponding air intake component 21, and the other end of each braking control component 31 is connected to the chassis braking system under test, and each braking control component 31 is used to control the chassis braking system under test to brake.

[0047] By setting the brake detection component 30, accurate detection and control of the brake system of the chassis under test can be achieved to ensure the normal operation of the vehicle brake system. At the same time, by setting a one-to-one correspondence with multiple air intake components 21, it is possible to detect the brake systems of different parts separately, thereby improving the accuracy and comprehensiveness of the detection. In addition, when the air tightness of the air circuit system of the chassis under test is good, multiple brake control components 31 are set and the air circuit flow control of the air intake component 21 is used to simulate the braking condition of the brake system of the chassis under test, so as to detect its braking function.

[0048] Furthermore, the detection device of the vehicle chassis system includes a box body 40, and each air intake component 21 includes: an air intake connector 211, the air intake connector 211 is arranged on the box body 40, and the air outlet end of the chassis air circuit system under test is connected to one end of each air intake connector 211, wherein the chassis air circuit system under test includes at least one of the following: rear axle air circuit, front axle air circuit, parking air circuit, and trailer air circuit.

[0049] Specifically, by integrating multiple air intake assemblies 21 into a box body 40, centralized detection of the chassis air circuit system can be achieved, reducing the space occupied by the detection equipment and facilitating maintenance and operation. Each air intake assembly can be configured for different chassis air circuit systems (such as rear axle air circuit, front axle air circuit, parking air circuit, trailer air circuit), improving the flexibility and applicability of detection. Through the integrated detection device, problems of the chassis air circuit system, such as leakage, blockage, etc., can be diagnosed more accurately.

[0050] In this embodiment, four air intake connectors 211 are provided, corresponding to the rear axle air circuit, the front axle air circuit, the parking air circuit, and the trailer air circuit respectively. The air intake connectors 211 are used to quickly connect the air tightness detection component 20 with the branch air circuits of the chassis air circuit system under test.

[0051] Furthermore, each air intake component 21 also includes: a first air intake branch 212, the air intake end of the first air intake branch 212 is connected to the other end of the air intake connector 211; a second air intake branch 213, the second air intake branch 213 is arranged in parallel with the first air intake branch 212, and the second air intake branch 213 is provided with a detection module 22, and the detection module 22 is used to collect the first air pressure value of the second air intake branch 213.

[0052] Specifically, the detection module 22 can collect the air pressure value of the first intake branch 212 and / or the second intake branch 213, which helps to monitor and control the state of the intake system in real time and ensure the stability and performance of the system. In this embodiment, the detection module 22 is configured as an air pressure sensor to accurately collect the first air pressure value of the second intake branch 213.

[0053] Furthermore, the gas supply assembly 10 includes: a gas supply pipeline 11, one end of which is connected to an external gas source, and a gas supply pipeline detection module 12 is provided on the gas supply pipeline 11, and the gas supply pipeline detection module 12 is used to collect a second air pressure value of the external gas source.

[0054] Specifically, the air supply component 10 is a transition device installed on the air handling unit to supply air to the chassis air system under test. The air supply component 10 is connected to the external control system of the vehicle pipeline system. The power supply and signal transmission between the air supply component 10 and the control module are realized through the wiring harness between the modules.

[0055] Specifically, the air supply assembly 10 includes: an air source interface 15, an air supply detection module 12, an air supply control valve 13, an air supply mechanical switch 14, an air supply quick-insert tube 16, and an air handling unit transition joint 17. The air source interface 15, the air supply detection module 12, the air supply control valve 13, the air supply mechanical switch 14, the air supply quick-insert female joint 16, and the air handling unit transition joint 17 are sequentially arranged on the air supply pipeline 11. The air supply detection module 12 is an air pressure sensor.

[0056] Among them, the air source interface 15 is a quick-connect connector that matches the external air source quick-connect female connector, one end of the connector is the matching end with the external air source, and the other end is connected to the air supply path detection module 12 through the air supply pipeline 11, the other end of the air supply path detection module 12 is connected to the air inlet end of the air supply path control valve 13 through the air supply pipeline 11, the air outlet end of the air supply path control valve 13 is connected to one end of the air supply path mechanical switch 14 through the air supply pipeline 11, the other end of the air supply path mechanical switch 14 is connected to one end of the air supply path quick-connect female connector 16, and the other end of the air supply path quick-connect female connector 16 is connected to the air handling unit transition connector 17 through a shorter pipeline.

[0057] The positive control signals of the air supply path detection module 12 and the air supply path control valve 13 are integrated at one end of the docking connector 70 through the power supply harness. The power supply harness also integrates a power supply wire clamp (divided into a positive end and a negative end) for system power supply. The negative signals of the air supply path detection module 12 and the air supply path control valve 13 are directly connected in parallel from the negative end wire clamp harness. The air supply path detection module 12 outputs a 0-5V voltage value after collecting the pressure signal.

[0058] Furthermore, the air tightness detection component 20 also includes: a control module 23, the control module 23 is arranged in the box body 40, the control module 23 is electrically connected to each detection module 22 and the air supply path detection module 12, and the control module 23 receives the first air pressure value and the second air pressure value; a display module 24, the display module 24 is arranged on the box body 40, the display module 24 is electrically connected to the control module 23, and the display module 24 is used to display the first air pressure value and the second air pressure value.

[0059] The airtightness detection component 20 can realize automatic control and real-time monitoring of the airtightness detection process through the setting of the control module 23 and the display module 24, thereby improving the accuracy and efficiency of the detection. At the same time, the setting of the display module 24 also enables the operator to intuitively understand the detection results, facilitate timely processing and adjustment, and improve the convenience and practicality of the work. Overall, the airtightness detection component 20 effectively improves the reliability and operability of airtightness detection.

[0060] Furthermore, each brake control component 31 includes: a control connector 311, which is arranged on the box body 40, and one end of the chassis brake system under test is connected to the control connector 311, wherein the chassis brake system under test includes at least one of the following: a rear axle brake system, a front axle brake system, a parking brake system, and a trailer brake system.

[0061] Specifically, there are four control joints 311, which are respectively arranged in one-to-one correspondence with the rear axle braking system, the front axle braking system, the parking braking system, and the trailer braking system.

[0062] Furthermore, each brake control component 31 also includes: a brake branch 312, one end of the brake branch 312 is connected to the other end of the control joint 311, and the other end of the brake branch 312 is connected to the first outlet end of the first air intake branch 212; a solenoid valve 313, the solenoid valve 313 is arranged on the brake branch 312, when the solenoid valve 313 is opened, the air pressure of the first air intake branch 212 is connected to the chassis brake system under test through the brake branch 312, so that the chassis brake system under test is braked.

[0063] By controlling the switch of the solenoid valve 313, the remote control of the chassis brake system under test can be realized, which improves the convenience and flexibility of operation. The setting of the brake control component 31 can effectively test and debug the chassis brake system under test, and improve the accuracy and reliability of the test. Through the connection between the brake branch 312 and the first air intake branch 212, the air pressure can be transmitted, thereby realizing accurate control of the chassis brake system. The brake control component 31 has a simple structure, is easy to install and maintain, and improves the stability and reliability of the entire system.

[0064] In this embodiment, four solenoid valves 313 are provided, corresponding to four control connectors 311 respectively, so as to respectively accurately control the rear axle braking system, the front braking system, the parking braking system, and the trailer braking system.

[0065] Furthermore, the detection device of the vehicle chassis system also includes: a control switch component 60 , the control switch component 60 is electrically connected to the plurality of solenoid valves 313 , and the control switch component 60 is used to control the on and off of each solenoid valve 313 .

[0066] In this embodiment, the control switch assembly 60 includes a plurality of control switches. In this embodiment, the control switches are set to six, wherein four control switches correspond to controlling four solenoid valves 313 respectively, and one control switch corresponds to controlling the air supply line control valve 13 .

[0067] Furthermore, the detection device of the vehicle chassis system also includes an exhaust component 50, which includes: an exhaust connector 51, which is arranged on the box body 40, and one end of the exhaust connector 51 is connected to the air collecting device; a plurality of first exhaust branches 52, one end of each first exhaust branch 52 is connected to the second outlet end of each first air intake branch 212; a second exhaust branch 53, one end of the second exhaust branch 53 is connected to the other end of each first exhaust branch 52, and the other end of the second exhaust branch 53 is connected to the other end of the exhaust connector 51; an exhaust valve assembly 54, which is arranged on the second exhaust branch 53, and the exhaust valve assembly 54 is electrically connected to the control switch assembly 60, and the control switch assembly 60 is used to control the on and off of the exhaust valve assembly 54. When the exhaust valve assembly 54 is opened, the air pressure of the first air intake branch 212 is discharged through the first exhaust branch 52 and the second exhaust branch 53.

[0068] The design of this exhaust assembly 50 can effectively discharge the exhaust gas in the chassis system of the tested vehicle and maintain the normal working state of the chassis system. By controlling the on-off of the exhaust valve assembly 54 by controlling the switch assembly 60, the above-mentioned one control switch corresponds to controlling the exhaust valve assembly 54, which can be more flexible and convenient to perform the exhaust gas discharge operation. In addition, the setting of multiple first exhaust branches 52 and second exhaust branches 53 can effectively increase the exhaust channel and improve the exhaust efficiency. On the whole, this exhaust assembly design can improve the performance and stability of the vehicle chassis system.

[0069] In some optional embodiments, the detection device of the vehicle chassis system also includes a total circuit switch 80 and a line docking connector 70. The line docking connector 70 is provided with a positive power supply and a negative power supply. One end of the line docking connector 70 is connected to a signal line of the air supply path detection module 12 and a signal line of the air supply path control valve 13.

[0070] The above-mentioned box body 40 is divided into two parts, an upper part and an lower part, and has a handle and two locking mechanisms. Four detection modules 22, four solenoid valves 313, and an exhaust valve assembly are arranged in the box body 40, and the surface of the box body 40 is provided with four air intake connectors 211, four control connectors 311, an exhaust connector 51, a pressure plate, a pressure plate bracket, a pressure plate connecting pin, a control switch assembly 60, and a display module 24.

[0071] The right side end of the upper cover part of the box body 40 is equipped with a main circuit switch 80 and a line docking connector 70, an upper surface integrated display module 24 and a control module 23 (including a 24V to 9V transformer), and a control switch assembly 60; 9 circular holes are arranged on the right side end of the box seat part of the box body 40, four air intake connectors 211 on the upper layer, four control connectors 311 on the lower layer and one exhaust connector 51, and the nine connectors are structurally in the form of a quick-insert nut seat at one end, in which the retaining ring and the rubber ring are removed and the sealing ring is retained, and the other end is an external thread and an internal thread, and the external thread is equipped with a thin nut to play a locking role when assembled on the main box, and the internal thread is equipped with a trachea quick-insert transition connector. Four solenoid valves 313 are assembled on the bracket, and the bracket and the solenoid valve 313 are assembled into one and installed on the left side of the box seat of the box body 40. The air inlet end of the solenoid valve 313 and the control joint 311 are connected with a suba pipeline in the form of a quick-plug connector. The pipeline is divided into a three-way connection to the detection module 22. The air outlet end of the solenoid valve 313 is connected to the exhaust valve assembly 54. The exhaust valve assembly 54 has a total of four interfaces. A one-way valve is installed at the air inlet end of each interface to cut off the backflow of the air flow. The exhaust valve assembly 54 is installed at the air inlet end of the solenoid valve 313, and the air outlet end of the exhaust valve assembly 54 is connected to the exhaust joint 51.

[0072] The power supply and control are integrated into the wire clip of the air supply assembly harness, which is connected to the main circuit switch 80 through the line docking connector 70 and then connected to the system main insurance.

[0073] In another embodiment of the present application, the present invention discloses a method for detecting a vehicle chassis system, the method steps are as follows:

[0074] S1, connect the detection device: S11: connect the air supply assembly 10, remove the screw plug at the adjacent position of the air handling unit air intake joint, screw in the air handling unit transition joint 17 with the short pipe part and tighten it; S12: connect the control module, remove the right side pressure plate connecting pin, rotate the pressure plate to open it with the other connecting pin as the axis, and assemble the control valve body air intake pipe that connects the chassis and the body to the position of the air intake joint 211 according to the corresponding position, one of the air intake joints 211 is connected to the rear brake air intake, one air intake joint 211 is connected to the front brake air intake, and one air intake joint 211 is connected to the front brake air intake. Connector 211 is connected to the parking brake air intake, and an air intake connector 211 is connected to the trailer air intake. The air pipes of the control lines of each solenoid valve 313 are assembled to the position of the control connector 311 according to the corresponding position. One control connector 311 is connected to the mid-rear axle driving brake control, one control connector 311 is connected to the front brake control, one control connector 311 is connected to the parking brake control, and one control connector 311 is connected to the trailer brake control. Then the pressure plate 17 is reset and the pressure plate connecting pin is assembled; S13: Connect the air supply assembly 10 to the line docking connector 70.

[0075] S2, system air supply process: connect the external air source gas belt quick-connect female connector to the air supply line quick-connect connector 17, turn the air supply line mechanical switch 14 clockwise to the open position, turn on the main circuit switch 80, turn on the control switch of the air supply line control valve of the control switch assembly 60, open the air supply line control valve 13, and the external air source supplies air to the chassis air system through the air handling unit.

[0076] S3, system pressure maintaining process: the air pressure signal is transmitted to the control module 23 through the air supply line detection module 12, the control module 23 outputs a display signal to the display module 24, the display module 24 partitions and displays the air pressure values ​​of each branch of the air supply line and the air intake component. When the system air pressure value is equivalent to the external air source pressure value, the control switch of the control switch assembly 60 that controls the air supply line control valve is closed, and the system enters the pressure maintaining mode.

[0077] S4. System branch detection: open the four control switches of the control solenoid valve 313 of the control switch assembly 60 in sequence, and detect each branch system one by one, one control switch corresponds to the driving brake control of the middle and rear axles, one control switch corresponds to the brake control of the front axle, one control switch corresponds to the parking brake control of the middle and rear axles, and one control switch corresponds to the brake control of the trailer. When the control switch is turned on, the solenoid valve 313 is energized, the pressure air flow controls the rear EBS valve to open, and the pressure air source in the system passes through the rear EBS valve to implement wheel braking.

[0078] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0079] By using the air tightness detection system and detection method, the air tightness detection system and the chassis and body connection pipelines are connected, an external air source is used to supply air to the air handling unit of the whole vehicle, and the air pressure signal is collected by the air pressure sensors of each branch. After transmitting to the control unit, the air pressure value of each branch is displayed, and it is identified whether there is any leakage or pressure maintenance at the air supply end of each branch air circuit. Then, each branch control switch is opened respectively, and it is identified whether there is any leakage or pressure maintenance at the control end and the execution end of each branch air circuit, and the problems of wrong connection and missing connection of the pipeline are eliminated, which solves the problem of not being able to intervene in the detection of the chassis air circuit system of the whole vehicle in advance.

[0080] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0081] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0082] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A detection device for a vehicle chassis system, characterized in that: include: An air supply component (10), one end of the air supply component (10) being connected to an external air source, and the other end of the air supply component (10) being connected to an air inlet end of an air path system of a chassis to be tested; An air tightness detection component (20), the air tightness detection component (20) comprising a plurality of air intake components (21) and a plurality of detection modules (22), the air intake end of each of the air intake components (21) being connected to the air outlet end of the chassis air path system being tested, each of the air intake components (21) being provided with at least one detection module (22), the detection module (22) being used to obtain an air pressure signal corresponding to the air intake component (21), and the air tightness detection component (20) judging the air tightness of the air path system being tested based on the air pressure signal.

2. The detection device of the vehicle chassis system according to claim 1, characterized in that: The detection device of the vehicle chassis system also includes: A brake detection component (30), the brake detection component (30) comprising a plurality of brake control components (31), the plurality of brake control components (31) being arranged in one-to-one correspondence with the plurality of air intake components (21), one end of each brake control component (31) being connected to a first air outlet end of the corresponding air intake component (21), the other end of each brake control component (31) being connected to a brake system of a chassis under test, and each brake control component (31) being used to control the brake system of the chassis under test to brake.

3. The detection device of the vehicle chassis system according to claim 2, characterized in that: The vehicle chassis system detection device comprises a box body (40), and each of the air intake components (21) comprises: An air intake connector (211), the air intake connector (211) being arranged on the box body (40), the air outlet end of the chassis air circuit system being tested being connected to one end of each of the air intake connectors (211), wherein the chassis air circuit system being tested comprises at least one of the following: a rear axle air circuit, a front axle air circuit, a parking air circuit, and a trailer air circuit.

4. The detection device of the vehicle chassis system according to claim 3, characterized in that: Each of the air intake components (21) further comprises: A first air intake branch (212), wherein an air intake end of the first air intake branch (212) is connected to the other end of the air intake connector (211); A second air intake branch (213), wherein the second air intake branch (213) is arranged in parallel with the first air intake branch (212), and the second air intake branch (213) is provided with the detection module (22), and the detection module (22) is used to collect a first air pressure value of the second air intake branch (213).

5. The detection device of the vehicle chassis system according to claim 4, characterized in that: The air supply assembly (10) comprises: an air supply pipeline (11), one end of the air supply pipeline (11) being in communication with the external air source, and an air supply pipeline detection module (12) being provided on the air supply pipeline (11), the air supply pipeline detection module (12) being used to collect a second air pressure value of the external air source.

6. The detection device of the vehicle chassis system according to claim 5, characterized in that: The airtightness detection component (20) further comprises: A control module (23), the control module (23) being arranged in the box body (40), the control module (23) being electrically connected to each of the detection modules (22) and the gas supply path detection module (12), and the control module (23) receiving the first air pressure value and the second air pressure value; A display module (24), the display module (24) is arranged on the box body (40), the display module (24) is electrically connected to the control module (23), and the display module (24) is used to display the first air pressure value and the second air pressure value.

7. The detection device of the vehicle chassis system according to claim 4, characterized in that: Each of the brake control components (31) comprises: A control joint (311), wherein the control joint (311) is arranged on the box body (40), and one end of the chassis brake system to be tested is connected to the control joint (311), wherein the chassis brake system to be tested includes at least one of the following: a rear axle brake system, a front axle brake system, a parking brake system, and a trailer brake system.

8. The detection device of the vehicle chassis system according to claim 7, characterized in that: Each of the brake control components (31) further comprises: A braking branch (312), one end of the braking branch (312) being connected to the other end of the control joint (311), and the other end of the braking branch (312) being connected to the first outlet end of the first air inlet branch (212); A solenoid valve (313), wherein the solenoid valve (313) is arranged on the brake branch (312); when the solenoid valve (313) is opened, the air pressure of the first air intake branch (212) is connected to the brake system of the chassis under test through the brake branch (312), so that the brake system of the chassis under test is braked.

9. The detection device of the vehicle chassis system according to claim 8, characterized in that: The detection device of the vehicle chassis system also includes: A control switch component (60), wherein the control switch component (60) is electrically connected to the plurality of solenoid valves (313), and the control switch component (60) is used to control the on and off of each of the solenoid valves (313).

10. The detection device of the vehicle chassis system according to claim 9, characterized in that: The detection device of the vehicle chassis system further comprises an exhaust assembly (50), wherein the exhaust assembly (50) comprises: An exhaust connector (51), the exhaust connector (51) being arranged on the box body (40), and one end of the exhaust connector (51) being connected to an air collecting device; A plurality of first exhaust branches (52), one end of each of the first exhaust branches (52) being connected to a second outlet end of each of the first intake branches (212); a second exhaust branch (53), one end of the second exhaust branch (53) being connected to the other end of each of the first exhaust branches (52), and the other end of the second exhaust branch (53) being connected to the other end of the exhaust joint (51); An exhaust valve assembly (54), wherein the exhaust valve assembly (54) is arranged on the second exhaust branch (53), and the exhaust valve assembly (54) is electrically connected to the control switch component (60), and the control switch component (60) is used to control the on and off of the exhaust valve assembly (54). When the exhaust valve assembly (54) is opened, the air pressure of the first intake branch (212) is discharged through the first exhaust branch (52) and the second exhaust branch (53).

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