System and method for testing low-temperature reliability of filter pressing cover

Abstract

The invention discloses a system and a method for testing the low-temperature reliability of a filter pressing cover, and belongs to the technical field of the low-temperature reliability testing of the filter pressing cover, and the system comprises a first environment device, a second environment device, a CAN device, a terminal controller and an alarm device. An oil pump to be tested is placed in the first environment device and connected with the second environment device, and the second environment device is used for regulating and controlling the oil temperature in the oil pump; the terminal controller is connected with the oil pump to be tested through the CAN equipment, the oil pump to be tested is controlled to work through the terminal controller, and different pressure impacts are applied to the filter pressing cover; a camera is arranged above the oil pump to be detected, the camera sends collected data to a terminal controller, the terminal controller is used for processing a picture to recognize the color change of a developing agent, and if oil leaks, an alarm device is triggered to perform emergency stop. The system integrates accurate verification condition setting, efficient test device design and systematized test process, and can accurately reproduce the running environment of the whole vehicle.

Description

Technical Field

[0001] The invention belongs to the technical field of low-temperature reliability testing of filter press covers, and in particular relates to a low-temperature reliability testing system and method for filter press covers. Background Art

[0002] The filter cover of the reducer can filter out tiny particles, metal chips, dirt and other impurities in the oil. By cleaning the reducer internally, it greatly reduces the wear and damage of key components and improves the efficiency and life performance of the reducer. The filter cover needs to ensure the sealing inside the reducer, effectively prevent external impurities and pollutants from entering the reducer, and also prevent the leakage of lubricating oil or other working media. Once the seal fails, it will not only affect the normal operation of the reducer, but also may cause the loss of lubricating oil, increase maintenance costs, and even cause more serious mechanical failures.

[0003] In recent years, with the rapid advancement of technology and the increasing requirements of customers for vehicle performance, various companies have significantly strengthened the assessment standards for key vehicle components. In order to ensure the stable operation of vehicles in extremely cold environments and avoid problems such as oil leakage, the reliability of filter press covers has become a focus of attention. For this reason, an urgent need for special tests on filter press covers has been proposed, aiming to verify their durability and reliability in harsh environments through rigorous testing, thereby ensuring the overall performance and safety of the vehicle.

[0004] Patent CN202410370439.7 proposes a test method for low-temperature sealing of a reducer. The test device needs to load the speed torque to simulate the actual vehicle situation to test whether there is a gap between the oil seal and the half-shaft or a crack in the oil seal that causes oil leakage in the electric drive system. The test device is relatively complex and cannot test the reliability of the filter cover. Patent CN202311232684.3 provides a gasoline engine supercharger lubricating oil seal test method to perform a supercharger pressure end vortex end operating condition test. It cannot assess environmental factors and cannot test the reliability of the filter cover. Patent CN201210310183.8 proposes a mud filter press experimental device and provides a filter display method, but its reliability cannot be verified.

[0005] At present, there is still a lack of a set of standardized devices and methods for filter press cover reliability testing, especially in low-temperature environments. Existing oil leakage test devices often ignore the key role of environmental factors and fail to effectively simulate temperature changes under real working conditions, resulting in a lack of comprehensiveness and accuracy in test results. In view of this, there is an urgent need to develop an innovative low-temperature filter press cover reliability test device and corresponding methods to comprehensively evaluate its performance in low-temperature and variable environments to ensure product quality and safety reliability. Summary of the invention

[0006] In view of the above-mentioned defects existing in the prior art, the present invention provides a low-temperature reliability test system and method for filter press covers. The system integrates precise verification condition setting, efficient test device design, and systematic test process, and can accurately reproduce the vehicle operating environment. In addition, it supports parallel testing of multiple devices, which significantly broadens the scope of application of the test method. At the same time, the bench equipment layout is simple and flexible, and the operation is convenient, which greatly promotes the efficient parallel execution of test verification of various filter press cover products, and provides solid support for comprehensive control of product quality.

[0007] The present invention is achieved through the following technical solutions:

[0008] In the first aspect, the present invention provides a low-temperature reliability test system for a filter press cover, comprising: a first environmental device, a second environmental device, a CAN device, a terminal controller and an alarm device; the oil pump to be tested is placed in the first environmental device, the first environmental device is used to simulate the temperature environment, the oil pump to be tested is connected to the second environmental device, the second environmental device is used to regulate the oil temperature inside the oil pump, and simulate the overall temperature changes caused by the operation of the actual vehicle during actual operation; the terminal controller is connected to the oil pump to be tested through the CAN device, and the operation of the oil pump to be tested is controlled by the terminal controller to apply different pressure shocks to the filter press cover; a camera is arranged above the oil pump to be tested, and the camera is used to observe in real time whether the filter press cover of the oil pump is leaking oil, and the camera sends the collected data to the terminal controller, and the terminal controller is used to process the image to identify the discoloration of the developer, and if there is oil leakage, the alarm device is triggered to stop urgently.

[0009] Furthermore, the test system also includes a pressure sensor and a temperature sensor. The pressure sensor is arranged at the oil pump filter position to monitor the pressure around the filter cover, and the temperature sensor is arranged in the reducer lubricating oil to monitor the oil temperature; the pressure sensor and the temperature sensor are both communicatively connected to the terminal controller.

[0010] Furthermore, the terminal controller is a notebook terminal.

[0011] In a second aspect, the present invention provides a method for testing a filter press cover low temperature reliability testing system, which specifically comprises the following steps:

[0012] Step 1: Assemble the oil pump to be tested and the reducer and place them in the first environmental equipment, and perform low-temperature freezing treatment in the first environmental equipment until the internal oil temperature of the oil pump reaches the predetermined test condition requirement;

[0013] Step 2: When the predetermined test condition requirements are met, the second environment equipment is turned on to heat up the oil in the oil pump to be tested, simulating the overall temperature change caused by the actual operation of the real vehicle;

[0014] Step 3: The terminal controller controls the oil pump to be tested to work, applies different pressure shocks to the filter press cover, and measures the sealing performance of the filter press cover under different pressure conditions;

[0015] Step 4: Monitor the pressure around the filter cover through the pressure sensor, monitor the temperature of the reducer lubricating oil through the temperature sensor, and send them to the terminal controller;

[0016] Step 5: Determine whether the current test condition meets the preset standard through the terminal controller. If it meets the preset standard, enter the next stage of test conditions; if it does not meet the preset standard, trigger the automatic processing mechanism.

[0017] Furthermore, before the test begins, the developer is evenly sprayed on the bottom of the filter cover of the oil pump to be tested, so that when oil leakage occurs, the leaked liquid will react with the developer to form a sharp color contrast, which is convenient for the camera to capture the image.

[0018] Furthermore, the automatic processing mechanism includes stopping the experiment, issuing an alarm signal, and sending shutdown feedback to the experimenter.

[0019] Furthermore, the test conditions are as follows:

[0020] The oil temperature is -40-30℃, the oil temperature rise rate is 1-2℃ / min, the ambient temperature is -44℃, and the oil pump flow rate is maintained at 4LPM or 4-10LPM alternating according to the test conditions.

[0021] In a third aspect, the present invention further provides a computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, a test method for a filter press cover low-temperature reliability test system as described in any one of the present invention is implemented.

[0022] In a fourth aspect, the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a test method for a filter press cover low-temperature reliability test system as described in any one of the present inventions.

[0023] Compared with the prior art, the advantages of the present invention are as follows:

[0024] A low-temperature reliability testing system and method for a filter press cover of the present invention fills the gap in reliability testing capabilities for filter press covers, and can also perform capability tests on similar products; the bench equipment has a simple structure, and the test channels can be expanded as needed to cover the verification capabilities of a variety of filter press cover products; the testing equipment can be directly upgraded based on existing equipment, is mature and reliable, and avoids technical risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0026] Figure 1 It is a structural block diagram of a low temperature reliability test system for a filter press cover of the present invention;

[0027] Figure 2 It is a schematic flow chart of a method for testing the low-temperature reliability of a filter press cover according to the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of an electronic device in Example 3 of the present invention. DETAILED DESCRIPTION

[0029] In order to clearly and completely describe the technical solution and its specific working process of the present invention, the specific implementation methods of the present invention are as follows in conjunction with the accompanying drawings of the specification:

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0033] Example 1

[0034] like Figure 1 As shown, this embodiment provides a low-temperature reliability test system for a filter press cover, comprising: a first environmental device, a second environmental device, a CAN device, a terminal controller, an alarm device, etc.; the oil pump to be tested is placed in the first environmental device, the first environmental device is used to simulate the temperature environment, the oil pump to be tested is connected to the second environmental device, the second environmental device is used to regulate the oil temperature inside the oil pump, and simulate the overall temperature change caused by the operation of the actual vehicle during actual operation; the terminal controller is connected to the oil pump to be tested through the CAN device, and the operation of the oil pump to be tested is controlled by the terminal controller to apply different pressure shocks to the filter press cover; a camera is arranged above the oil pump to be tested, and the camera is used to observe in real time whether the filter press cover of the oil pump is leaking oil, and the camera sends the collected data to the terminal controller, and the terminal controller is used to process the image to identify the discoloration of the developer, and if there is oil leakage, the alarm device is triggered to stop urgently.

[0035] The test system also includes a pressure sensor and a temperature sensor. The pressure sensor is arranged at the oil pump filter position to monitor the pressure around the filter cover, and the temperature sensor is arranged in the reducer lubricating oil to monitor the oil temperature. The pressure sensor and the temperature sensor are both communicatively connected to the terminal controller.

[0036] The terminal controller is a notebook terminal.

[0037] Example 2

[0038] like Figure 2 As shown, this embodiment provides a test method for a low-temperature reliability test system for a filter press cover, which specifically includes the following steps:

[0039] Step 1: Assemble the oil pump to be tested and the reducer and place them in the first environmental equipment, and perform low-temperature freezing treatment in the first environmental equipment until the internal oil temperature of the oil pump reaches the predetermined test condition requirement;

[0040] During the test, it is necessary to ensure that the assembled oil pump and reducer maintain the same installation angle as the entire vehicle to accurately simulate the stress and operating conditions in the actual working scenario, so as to comprehensively evaluate the performance and durability of the filter cover in the whole vehicle environment.

[0041] This embodiment uses the first environmental equipment to simulate the extreme outdoor temperature conditions of a real vehicle in the cold winter, and places the two-in-one assembly of the oil pump and reducer to be tested in this equipment for low-temperature freezing treatment until the internal oil temperature accurately reaches the predetermined test condition requirements.

[0042] Step 2: When the predetermined test condition requirements are met, the second environment equipment is turned on to heat up the oil in the oil pump to be tested, simulating the overall temperature change caused by the actual operation of the real vehicle;

[0043] Step 3: The terminal controller controls the oil pump to be tested to work and applies different pressure shocks to the filter press cover, which can achieve precise regulation of the oil pump flow rate, thereby generating variable flow shocks, and repeatedly applies pressure shocks to the filter press cover to comprehensively evaluate its performance under different pressure conditions; measure the sealing performance of the filter press cover under different pressure conditions;

[0044] Step 4: Monitor the pressure around the filter cover through the pressure sensor, monitor the temperature of the reducer lubricating oil through the temperature sensor, and send them to the terminal controller;

[0045] Step 5: Determine whether the current test condition meets the preset standard through the terminal controller. If so, enter the next stage of test condition; if not, trigger the automatic processing mechanism;

[0046] In order to ensure the stability of the experimental environment and avoid temperature changes caused by opening and closing the environmental chamber, a high-definition camera is built into the observation device. Before the experiment officially begins, the developer is evenly sprayed on the bottom of the filter press cover so that when an oil leak occurs, the leaked liquid will react with the developer to form a sharp color contrast. Once the filter press cover leaks, the built-in camera will quickly capture this bright color change and immediately trigger the automatic processing mechanism, including stopping the experiment, issuing an alarm signal, and sending shutdown feedback to the experimenter. This series of actions is based on digital detection technology to ensure the timeliness and accuracy of the response. After the test, by opening the environmental chamber, the experimenter will combine visual observation and tactile inspection to conduct a comprehensive evaluation of the filter press cover and determine the test results of the filter press cover. This visual and tactile combination and numerical detection method not only improves the accuracy of the test, but also enhances the reliability of the results.

[0047] In this embodiment, the test conditions are shown in Table 1;

[0048] Table 1 shows the test conditions.

[0049]

[0050] Example 3

[0051] Figure 3 This is a schematic diagram of the structure of a computer device in Example 3 of the present invention. Figure 3 A block diagram of an exemplary computer device 12 suitable for use in implementing embodiments of the present invention is shown. Figure 3 The computer device 12 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0052] like Figure 3 As shown, the computer device 12 is in the form of a general-purpose computing device. The components of the computer device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 that connects various system components (including the system memory 28 and the processing unit 16).

[0053] Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor or a local bus using any of a variety of bus architectures. By way of example, these architectures include, but are not limited to, an Industry Standard Architecture (ISA) bus, a Micro Channel Architecture (MAC) bus, an Enhanced ISA bus, a Video Electronics Standards Association (VESA) local bus, and a Peripheral Component Interconnect (PCI) bus.

[0054] The computer device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by the computer device 12, including volatile and non-volatile media, removable and non-removable media.

[0055] The system memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and / or cache memory 32. The computer device 12 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, the storage system 34 may be used to read and write non-removable, non-volatile magnetic media ( Figure 3 not shown, usually called a "hard drive"). Although Figure 3Not shown in the figure, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk"), and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, a DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to the bus 18 via one or more data medium interfaces. The memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to perform the functions of the various embodiments of the present invention.

[0056] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in the memory 28. Such program modules 42 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment. The program modules 42 generally perform the functions and / or methods of the embodiments described herein.

[0057] The computer device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), may also communicate with one or more devices that enable a user to interact with the computer device 12, and / or communicate with any device that enables the computer device 12 to communicate with one or more other computing devices (e.g., network card, modem, etc.). Such communication may be performed through an input / output (I / O) interface 22. In addition, the computer device 12 in this embodiment, the display 24 does not exist as an independent individual, but is embedded in the mirror surface, and when the display surface of the display 24 is not displayed, the display surface of the display 24 and the mirror surface are visually integrated. In addition, the computer device 12 may also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN) and / or public network, such as the Internet) through a network adapter 20. As shown in the figure, the network adapter 20 communicates with other modules of the computer device 12 through a bus 18. It should be understood that although not shown in the figures, other hardware and / or software modules may be used in conjunction with the computer device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0058] The processing unit 16 executes various functional applications and data processing by running the programs stored in the system memory 28, such as implementing a test method of a filter press cover low-temperature reliability test system provided by an embodiment of the present invention.

[0059] Example 4

[0060] Embodiment 4 of the present invention provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, a test method for a low-temperature reliability test system for a filter press cover as provided in all the embodiments of the present application is implemented.

[0061] Any combination of one or more computer-readable media may be used. A computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, device, or device.

[0062] Computer-readable signal media may include a data signal propagated in baseband or as part of a carrier wave, which carries a computer-readable program code. Such propagated data signals may take a variety of forms, including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0063] Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0064] Computer program code for performing the operations of the present invention may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0065] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A filter press cover low temperature reliability test system, characterized in that: include: The first environmental device, the second environmental device, the CAN device, the terminal controller and the alarm device; the oil pump to be tested is placed in the first environmental device, the first environmental device is used to simulate the temperature environment, the oil pump to be tested is connected to the second environmental device, the second environmental device is used to adjust the oil temperature inside the oil pump, and simulate the overall temperature change caused by the operation of the real vehicle in actual operation; the terminal controller is connected to the oil pump to be tested through the CAN device, and the operation of the oil pump to be tested is controlled by the terminal controller to apply different pressure shocks to the filter cover; a camera is arranged above the oil pump to be tested, and the camera is used to observe in real time whether the filter cover of the oil pump is leaking oil, and the camera sends the collected data to the terminal controller, and the terminal controller is used to process the image to identify the color change of the developer, and if there is oil leakage, the alarm device is triggered to stop urgently.

2. A filter press cover low temperature reliability testing system as claimed in claim 1, characterized in that: The test system also includes a pressure sensor and a temperature sensor. The pressure sensor is arranged at the oil pump filter position to monitor the pressure around the filter cover, and the temperature sensor is arranged in the reducer lubricating oil to monitor the oil temperature. The pressure sensor and the temperature sensor are both communicatively connected to the terminal controller.

3. A filter press cover low temperature reliability testing system as claimed in claim 1, characterized in that: The terminal controller is a notebook terminal.

4. The test method of a filter press cover low temperature reliability test system according to claim 1, characterized in that: The specific steps include: Step 1: Assemble the oil pump to be tested and the reducer and place them in the first environmental equipment, and perform low-temperature freezing treatment in the first environmental equipment until the internal oil temperature of the oil pump reaches the predetermined test condition requirement; Step 2: When the predetermined test condition requirements are met, the second environment equipment is turned on to heat up the oil in the oil pump to be tested, simulating the overall temperature change caused by the actual operation of the real vehicle; Step 3: The terminal controller controls the oil pump to be tested to work, applies different pressure shocks to the filter press cover, and measures the sealing performance of the filter press cover under different pressure conditions; Step 4: Monitor the pressure around the filter cover through the pressure sensor, monitor the temperature of the reducer lubricating oil through the temperature sensor, and send them to the terminal controller; Step 5: Determine whether the current test condition meets the preset standard through the terminal controller. If it meets the preset standard, enter the next stage of test conditions; if it does not meet the preset standard, trigger the automatic processing mechanism.

5. A low temperature reliability testing method for a filter press cover as claimed in claim 4, characterized in that: Before the test begins, spray the developer evenly on the bottom of the filter cover of the oil pump to be tested so that when an oil leak occurs, the leaked liquid will react with the developer to form a sharp color contrast, making it easier for the camera to capture the image.

6. A low temperature reliability testing method for a filter press cover according to claim 4, characterized in that: The automatic processing mechanism includes stopping the experiment, issuing an alarm signal, and sending shutdown feedback to the experimenter.

7. A low temperature reliability testing method for a filter press cover according to claim 4, characterized in that: The test conditions are as follows: The oil temperature is -40-30℃, the oil temperature rise rate is 1-2℃ / min, the ambient temperature is -44℃, and the oil pump flow rate is maintained at 4LPM or 4-10LPM alternating according to the test conditions.

8. A computer device, characterized in that: It comprises a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the program, a test method for a filter press cover low-temperature reliability test system as described in any one of claims 4 to 7 is implemented.

9. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the program is executed by a processor, a test method for a low-temperature reliability test system for a filter press cover as described in any one of claims 4 to 7 is implemented.

Images