A transmission lubricating oil quantity distribution test device and method

Abstract

This invention relates to the field of parts testing technology, and provides a testing device and method for transmission lubricant distribution. The device includes a test bench, a connecting fixture, a driving dynamometer, an oil volume collection and measurement module, and an automatic alarm module. The test bench supports the connecting fixture and the driving dynamometer. The connecting fixture seals the transmission sample and the driving dynamometer. The driving dynamometer drives the input shaft of the transmission sample to rotate. The oil volume collection and measurement module is located outside the output shaft of the transmission sample and measures the amount of lubricant distributed in each lubricating oil hole on the input shaft. The automatic alarm module is located on the transmission sample and the driving dynamometer and detects in real time whether the test conditions are normal. This invention solves the technical problems of existing testing devices being unable to meet two operating conditions, prone to oil backflow, having low oil volume measurement accuracy, and insufficient testing intelligence.

Description

Technical Field

[0001] This invention relates to the field of parts testing technology, and in particular to a test apparatus and method for the distribution of transmission lubricating oil. Background Technology

[0002] The existing testing equipment for static lubricant quantity testing requires disassembling the sample box, partially sealing the oil holes of the input shaft, and fixing the input shaft to the grid frame for testing. During the test, the input shaft needs to be repeatedly disassembled and reassembled to adjust the angle. Therefore, when performing dynamic lubricant quantity distribution, the input shaft needs to be reassembled and moved to the test bench. This method cannot simulate the state of the input shaft in the whole box and accurately adjust the angle of the input shaft. Switching to the dynamic lubricant quantity distribution test mode is cumbersome and time-consuming. In the dynamic lubricant quantity distribution test, the hydraulic torque converter needs to be connected to the flywheel and flange to the dynamometer for driving. This will cause the oil in the input shaft to flow back during the test, reducing the amount of oil distributed to each hole and resulting in inaccurate results. It cannot meet both static and dynamic test conditions at the same time. In addition, there are technical problems such as easy oil backflow, low oil quantity measurement accuracy, and insufficient intelligence of the test during the test. Summary of the Invention

[0003] The purpose of this invention is to provide a testing device and method for transmission lubricating oil distribution. This invention solves the technical problems of existing testing devices being unable to meet two operating conditions, prone to oil backflow, having low oil quantity measurement accuracy, and insufficient testing intelligence. The specific solution is as follows:

[0004] A transmission lubricating oil distribution test device includes a connecting fixture, a drive dynamometer, and an oil collection and measurement module;

[0005] The connecting fixture is used to seal and connect the transmission sample and the drive dynamometer; wherein the drive dynamometer is used to drive the input shaft of the transmission sample to rotate.

[0006] The oil collection and measurement module is located outside the output shaft of the transmission sample and is used to measure the amount of oil distributed in each lubrication hole on the input shaft.

[0007] Optional features also include a test bench and an automatic alarm module;

[0008] The test bench is used to support the connecting fixture and drive the dynamometer;

[0009] The automatic alarm module is installed on the transmission sample and the drive dynamometer to detect in real time whether the test conditions are normal; wherein, the test conditions include at least: dynamic test conditions and static test conditions.

[0010] Optionally, the connecting fixture includes: an adapter flange, a sealing assembly, a drive shaft, and a bearing housing;

[0011] The adapter flange is matched and connected to the mounting flange of the transmission sample; the center of the adapter flange is provided with a through hole for the drive shaft to pass through; wherein, the transmission sample is not equipped with a hydraulic torque converter;

[0012] The drive shaft has one end connected to the input shaft of the transmission sample via a spline through a through hole, and the other end connected to the output end of the drive dynamometer via a spline.

[0013] The sealing assembly includes a sealing ring made of fluororubber and a sealing gasket made of oil-resistant rubber; wherein, the sealing ring is disposed in an annular groove on one side surface of the transition flange, and is used to seal the fitting gap between the transition flange and the mounting flange of the transmission hydraulic torque converter; the sealing gasket is disposed between an annular oil baffle inside the transition flange and the input shaft of the transmission sample; wherein, the inner surface of the annular oil baffle is provided with a sealing groove for installing the sealing gasket.

[0014] A deep groove ball bearing is installed on the bearing housing, the deep groove ball bearing is sleeved on the outside of the drive shaft, and is connected to the test bench through the bearing housing.

[0015] Optionally, the branch collection cover of the oil collection and measurement module is arranged on the input shaft of the transmission sample and fixed on the test bench;

[0016] The branch collection cover has a collection chamber inside that is the same number as the number of lubricating oil holes; each collection chamber is covered with the outer peripheral area of ​​the input shaft corresponding to a single lubricating oil hole, for collecting the distributed lubricating oil flowing out of the corresponding lubricating oil hole;

[0017] The bottom of each collection chamber is connected to a measuring container via a guide tube; wherein the measuring container is arranged above the weight sensor.

[0018] Optionally, the collection chamber is an annular cover with an opening on the inner side; the annular cover covers the outer surface of the input shaft, and an annular space is formed between it and the outer surface of the input shaft at the corresponding lubricating oil hole position, through which the distributed lubricating oil flowing out of the lubricating oil hole is collected;

[0019] The radial depth and axial width of the annular space are determined based on the injection angle and injection orifice diameter of the lubricating oil hole.

[0020] Optionally, the branch collection cover is made of polycarbonate; the inner wall of the guide pipe is provided with a polytetrafluoroethylene anti-oil coating.

[0021] Optionally, the automatic alarm module includes: a sensor assembly, an audible and visual alarm, and a neural network processing module;

[0022] The sensor assembly includes at least: an oil temperature sensor, an oil pressure sensor, an oil quantity sensor, and a photoelectric speed sensor; wherein, each sensor is correspondingly mounted on the lubrication oil circuit, oil collection line, and input shaft of the transmission sample, and is used to collect operating parameters;

[0023] The neural network processing module is used to determine whether the test conditions are normal based on the first data collected by the sensor components; wherein, the first data includes at least: oil temperature, oil pressure, oil quantity and speed data of the transmission sample;

[0024] The neural network processing module is configured to output an abnormal signal to an audible and visual alarm when an abnormal test condition is detected, and to provide an alarm prompt through the audible and visual alarm.

[0025] A method for testing transmission lubricant distribution, applied to the aforementioned apparatus; the method includes the following steps:

[0026] S1: Sample Connection and Inspection Procedure: Fix the transmission sample without a hydraulic torque converter onto the test bench, ensuring that the transmission sample is securely installed; connect the transmission sample to the drive dynamometer using the connection fixture, align the adapter flange with the mounting flange of the transmission sample and secure it with bolts, ensuring that the sealing components are installed in place;

[0027] S2: Oil collection and measurement module preparation steps: The branch collection cover is fitted onto the input shaft of the transmission sample, and the position of the branch collection cover is adjusted so that each collection chamber in the branch collection chamber can cover the outer peripheral area of ​​the input shaft corresponding to a single lubricating oil hole.

[0028] S3: Configure the operating test parameters for the test conditions; the operating test parameters include at least: static test parameters and dynamic test parameters; wherein, the static test parameters include at least: preset oil temperature, settling time, and test duration; the dynamic test parameters include at least: input shaft speed, test duration, preset oil temperature, and abnormal warning threshold;

[0029] S4: Based on the configured operating test parameters, measure the oil distribution data of each lubricating oil hole in the input shaft of the transmission sample under dynamic test conditions and static test conditions respectively; wherein, the oil distribution data includes at least: static distribution data and dynamic distribution data; the static distribution data includes at least: the oil distribution volume of each lubricating oil hole within a preset time period, and the proportion of the oil volume of each lubricating oil hole to the total distributed oil volume; the dynamic distribution data includes at least: the oil distribution volume of each lubricating oil hole, the total oil volume, and the distribution ratio at different speeds and different time points.

[0030] Optionally, step S5 may also be included;

[0031] Step S5 specifically includes:

[0032] Anomaly warning and handling steps: During the test, the first data is collected in real time by the sensor components and transmitted to the neural network processing module; the first data includes at least: the oil temperature, oil pressure, oil quantity and input shaft speed data of the transmission sample;

[0033] The neural network processing module performs real-time analysis on the first data. If abnormal data is detected, it outputs an abnormal signal to the audible and visual alarm, which then provides an alarm notification.

[0034] Optionally, step S0 may be included before step S1;

[0035] Step S0 specifically includes:

[0036] Based on the injection angle and injection orifice diameter of the lubricating oil hole on the input shaft of the transmission sample, the annular space size of each collection chamber in the branch collection cover is determined respectively; the annular space size includes at least: radial depth and axial width; wherein, the larger the injection angle and injection orifice diameter of the lubricating oil hole, the larger the corresponding annular space size; based on the fixed constraint of the outer contour size of the branch collection cover, the larger the axial width of the collection chamber, the smaller the thickness of the partition sidewall of the collection chamber.

[0037] The beneficial effects of this invention are as follows:

[0038] This invention provides a testing device and method for transmission lubricant distribution. The invention utilizes a test bench to support the connecting fixture and the driving dynamometer, ensuring strong overall structural stability. The connecting fixture achieves sealed docking and positioning of the transmission sample, without torque transmission during operation. The driving dynamometer serves as a stable power source, driving the input shaft rotation. Power output is controllable, and the sealing and driving functions are completely decoupled, avoiding technical problems such as seal failure and deformation caused by torque on the connecting fixture. An oil quantity collection and measurement module is directly positioned corresponding to the lubricant holes on the input shaft, enabling individual collection of lubricant from each distribution path and accurate measurement of the oil distribution ratio of each individual lubricant hole. An automatic alarm module covers key areas of the transmission sample and the driving dynamometer. By simultaneously monitoring both static and dynamic test conditions, it identifies abnormal parameters such as oil temperature, oil pressure, speed, and oil quantity in real time and triggers audible and visual warnings. This promptly prevents test overload, oil leakage, abnormal speed, and other faults, reducing test data scrapping and protecting the transmission sample and testing equipment. This invention is highly applicable to both static and dynamic lubricant distribution testing scenarios for transmission samples without a torque converter, exhibiting high versatility and testing reliability. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of a transmission lubricating oil distribution test device according to an embodiment of the present invention;

[0040] Figure 2 This is a schematic flowchart of a transmission lubricant distribution test method according to an embodiment of the present invention.

[0041] In the diagram: 1 is the test bench; 2 is the transmission sample; 3 is the connecting fixture; 4 is the drive dynamometer; 5 is the oil quantity collection and measurement module; 6 is the control module; 7 is the automatic alarm module; and 8 is the oil temperature control system. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the following description will be provided in conjunction with the appendix. Figures 1-2 The present invention will be described in further detail below. It is obvious that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0043] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms, and “multiple” generally includes at least two unless the context clearly indicates otherwise.

[0044] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0045] It should be understood that although the terms first, second, third, etc., may be used in the embodiments of the present invention, these descriptions should not be limited to these terms. These terms are only used to distinguish the descriptions. For example, first may also be referred to as second without departing from the scope of the embodiments of the present invention, and similarly, second may also be referred to as first.

[0046] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0047] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0048] It should be noted that any symbols and / or numbers present in the specification that are not marked in the accompanying drawings are not reference numerals.

[0049] The optional embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0050] Combination Figure 1 and Figure 2 The transmission lubricating oil distribution test device shown includes a test stand, a connecting fixture 3, a drive dynamometer 4, an oil collection and measurement module 5, and an automatic alarm module 7.

[0051] The test bench 1 is used to support the connecting fixture 3 and the driving dynamometer 4;

[0052] The connecting fixture 3 is used to seal and connect the transmission sample 2 and the drive dynamometer 4; wherein the drive dynamometer 4 is used to drive the input shaft of the transmission sample 2 to rotate.

[0053] The oil collection and measurement module 5 is arranged outside the output shaft of the transmission sample 2 and is used to measure the amount of oil distributed in each lubrication hole on the input shaft.

[0054] The automatic alarm module 7 is arranged on the transmission sample 2 and the drive dynamometer 4, and is used to detect in real time whether the test conditions are normal; wherein, the test conditions include at least: dynamic test conditions and static test conditions.

[0055] Specifically, this invention uses a test bench 1 to support the connecting fixture 3 and the driving dynamometer 4, ensuring strong overall structural stability. The connecting fixture 3 achieves sealed docking and positioning of the transmission sample 2, without torque transmission during operation. The driving dynamometer 4 serves as a stable power source to rotate the input shaft, with controllable power output and complete decoupling of sealing and driving functions, avoiding technical problems such as seal failure and deformation caused by torque on the connecting fixture 3. The oil collection and measurement module 5 is directly positioned corresponding to the lubrication oil hole on the input shaft, enabling individual collection of lubrication oil from each distribution path for accurate measurement. The oil distribution ratio of a single lubrication hole is measured; the automatic alarm module 7 can cover the key areas of the transmission sample 2 and the drive dynamometer 4. By synchronously monitoring both static and dynamic test conditions, it can identify abnormal parameters such as oil temperature, oil pressure, speed, and oil quantity in real time and trigger audible and visual warnings. It can promptly avoid test overload, oil circuit leakage, abnormal speed and other faults, reduce test data scrapping, and protect the transmission sample 2 and test equipment. This invention is highly applicable to both static and dynamic lubrication distribution test scenarios for transmission samples 2 that do not have a hydraulic torque converter, and has high versatility and test reliability.

[0056] In one specific embodiment, the connecting fixture 3 includes: an adapter flange, a sealing assembly, a drive shaft, and a bearing housing;

[0057] The adapter flange is matched and connected to the mounting end flange of the transmission sample 2; the center of the adapter flange is provided with a through hole for the drive shaft to pass through; wherein, the transmission sample 2 is not equipped with a hydraulic torque converter;

[0058] The drive shaft has one end connected to the input shaft of the transmission sample via a spline through a through hole, and the other end connected to the output end of the drive dynamometer 4 via a spline.

[0059] The sealing assembly includes a sealing ring made of fluororubber and a sealing gasket made of oil-resistant rubber; wherein, the sealing ring is disposed in an annular groove on one side surface of the transition flange, and is used to seal the fitting gap between the transition flange and the mounting flange of the transmission hydraulic torque converter; the sealing gasket is disposed between an annular oil baffle inside the transition flange and the input shaft of the transmission sample; wherein, the inner surface of the annular oil baffle is provided with a sealing groove for installing the sealing gasket.

[0060] A deep groove ball bearing is installed on the bearing housing, the deep groove ball bearing is sleeved on the outside of the drive shaft, and is connected to the test bench through the bearing housing.

[0061] Specifically, the connecting fixture 3 involved in this invention includes an adapter flange, a sealing assembly, a drive shaft, and a bearing housing forming an integrated transmission sealing structure. This allows it to be used with transmission samples without a hydraulic torque converter. The adapter flange allows direct alignment and assembly with the transmission mounting flange, and the central through hole provides a regular passage for the drive shaft. The two ends of the drive shaft are connected to the input shaft of the transmission sample and the output end of the drive dynamometer 4 using a spline structure, ensuring stable and reliable torque transmission and convenient assembly and disassembly. The sealing assembly uses a fluororubber sealing ring and an oil-resistant rubber sealing gasket for layered sealing. The sealing ring is embedded in the annular groove on the end face of the adapter flange to seal the flange fitting gap, and the sealing gasket is assembled in the sealing groove on the inner side of the annular oil baffle to isolate leakage from the input shaft. The double sealing structure is oil-resistant and has long-lasting sealing performance, effectively preventing lubricating oil leakage and contamination of the test bench, and ensuring accurate oil quantity measurement data. The bearing housing provides radial support to the drive shaft and is fixed to the test bench 1 through a deep groove ball bearing, greatly reducing radial runout and friction loss when the drive shaft rotates at high speed, improving transmission smoothness, and significantly reducing measurement errors and equipment wear caused by test oil leakage and shaft wobbling.

[0062] In one specific embodiment, the oil collection and measurement module 5 includes: a branch collection cover, a guide pipe, a metering container, and a weight sensor;

[0063] The branch collection cover is arranged on the input shaft of the transmission sample and fixed on the test bench 1;

[0064] The branch collection cover has a collection chamber inside that is the same number as the number of lubricating oil holes; each collection chamber is covered with the outer peripheral area of ​​the input shaft corresponding to a single lubricating oil hole, for collecting the distributed lubricating oil flowing out of the corresponding lubricating oil hole;

[0065] The bottom of each collection chamber is connected to a measuring container via a guide tube; wherein the measuring container is arranged above the weight sensor.

[0066] Specifically, the branch collection cover of the present invention is fixed to the test bench 1. Its operation is not synchronized with the input shaft. It can stably cover the outside of the input shaft and collect the lubricating oil flowing from each lubricating oil hole through independent collection chambers, each with a number matching the number of lubricating oil holes. This achieves physical isolation of the oil in each path, preventing mixing and eliminating the technical problem of cross-interference between oil volumes in different oil paths. Each collection chamber independently guides the corresponding lubricating oil into a metering container through a guide pipe at its bottom. The metering container is placed directly on top of the weight sensor, enabling real-time and individual acquisition of the weight data of each lubricating oil path. The metering path is short, and oil retention is minimal, improving the overall measurement accuracy of the oil volume distribution ratio of a single lubricating oil hole. Furthermore, it is convenient to disassemble and maintain, effectively avoiding data distortion caused by oil mixing and ensuring accurate and reliable oil volume distribution test results.

[0067] In one specific embodiment, the collecting cavity is an annular cover with an opening on the inner side; the annular cover covers the outer surface of the input shaft, and an annular space is formed between it and the outer surface of the input shaft at the corresponding lubricating oil hole position, and the distributed lubricating oil flowing out of the lubricating oil hole is collected through the annular space (that is, the distributed lubricating oil flowing out of the lubricating oil hole flows into the collecting cavity through the annular space).

[0068] The radial depth and axial width of the annular space are determined based on the injection angle and injection orifice diameter of the lubricating oil hole.

[0069] Specifically, the collection chamber of this invention adopts an annular cover structure with an inner opening, arranged around the outside of the input shaft. An annular space is reserved between the annular cover and the outer wall of the input shaft as a passage for lubricating oil, which can smoothly receive the oil sprayed from each lubricating oil hole and guide it into the collection chamber for collection, avoiding oil splashing. At the same time, the radial depth and axial width of the annular space are matched and set according to the spray angle and diameter of the corresponding lubricating oil hole. For oil holes with large diameter and large spray angle, a larger annular space is configured to fully accommodate the oil jet that diffuses over a wide range, preventing the oil from rebounding when it hits the edge of the cover opening and entering adjacent collection chambers, causing oil mixing. For oil holes with small diameter and small spray angle, a narrow annular space is matched, thereby restricting the diffusion of oil mist, reducing spray noise under high-speed conditions, and reducing lubricating oil residue on the inner wall of the collection chamber. This not only avoids the risk of direct contact friction and wear between moving and stationary parts, but also adapts to the spray characteristics of oil holes with different oil outlet specifications. Structurally, it ensures that the lubricating oil in each path is completely separated, significantly improving the accuracy of single-path oil quantity distribution measurement and the stability of test operation.

[0070] In one specific embodiment, the branch collection cover is made of polycarbonate; the inner wall of the guide tube is provided with a polytetrafluoroethylene anti-oil coating.

[0071] It is understandable that the polycarbonate-based distribution collection cover possesses high strength, impact resistance, resistance to transmission lubricant corrosion, and high transparency, allowing for direct observation of the oil collection status in each internal collection chamber during testing. Furthermore, it is resistant to deformation and cracking, maintaining a stable and fixed installation shape over a long period, effectively resisting high-speed oil jet erosion. The inner wall of the guide tube is coated with a polytetrafluoroethylene (PTFE) anti-oil-sticking coating. This coating significantly reduces the adhesion of lubricating oil, minimizing oil buildup and residue on the inner wall of the pipe. This ensures that the lubricating oil flows quickly and completely into the metering container below, preventing oil accumulation in the pipe from causing underestimation of the oil volume by the weight sensor and distortion of the distribution ratio calculation.

[0072] In one specific embodiment, the automatic alarm module 7 includes: a sensor assembly, an audible and visual alarm, and a neural network processing module;

[0073] The sensor assembly includes at least: an oil temperature sensor, an oil pressure sensor, an oil quantity sensor, and a photoelectric speed sensor; wherein, each sensor is correspondingly mounted on the lubrication oil circuit, oil collection line, and input shaft of the transmission sample, and is used to collect operating parameters;

[0074] The neural network processing module is used to determine whether the test conditions are normal based on the first data collected by the sensor components; wherein, the first data includes at least: oil temperature, oil pressure, oil quantity and speed data of the transmission sample;

[0075] The neural network processing module is configured to output an abnormal signal to an audible and visual alarm when an abnormal test condition is detected, and to provide an alarm prompt through the audible and visual alarm.

[0076] Example

[0077] The connecting fixture 3 includes an adapter flange, a sealing assembly, a drive shaft, and a bearing housing. The adapter flange is made of 45# steel and matches the hydraulic torque converter mounting flange of the transmission sample, and is fixedly connected by eight M12 bolts. The adapter flange has a through hole in the center for the drive shaft to pass through. The drive shaft is connected to the output end of the drive dynamometer 4. The sealing assembly includes a fluororubber sealing ring and an oil-resistant rubber gasket. The sealing ring is embedded in the annular groove of the adapter flange and fits tightly against the end face of the transmission flange. The gasket is located in the gap between the annular oil baffle inside the adapter flange and the protruding end of the input shaft of the transmission sample, with a gap of 0.5mm, to achieve rotational sealing of the input shaft. The inner surface of the annular oil baffle has a sealing groove for installing the gasket. A deep groove ball bearing is installed on the bearing housing. The deep groove ball bearing is sleeved on the outside of the drive shaft and connected to the test bench through the bearing housing. The drive shaft is connected to the transmission input shaft through a spline, with a transmission efficiency of ≥98%.

[0078] 2) The oil collection and measurement module 5 includes a branch collection cover, a guide pipe, a metering container, and a weight sensor. The branch collection cover is made of polycarbonate and has an independent collection chamber corresponding to the oil hole of the input shaft. The guide pipe is made of stainless steel with an inner diameter of 8mm and a polytetrafluoroethylene anti-oil coating on the inner wall. The metering container is made of transparent glass with a volume of 500mL and a sealed oil inlet at the top, which is sealed to the guide pipe. A weight sensor is installed at the bottom of the metering container. The weight sensor is a high-precision strain gauge sensor with a measurement accuracy of 0.05g. It is electrically connected to the control module 6 and the data transmission frequency is 1 time / second.

[0079] 3) The automatic alarm module 7 includes sensor components, an audible and visual alarm, and a neural network processing module. The sensor components include a PT100 oil temperature sensor (measurement range 0-150℃, accuracy ±0.5℃), a diffused silicon oil pressure sensor (measurement range 0-1MPa, accuracy ±0.5%FS), a Hall effect oil volume sensor (measurement range 0-10L, accuracy ±0.1L), and a photoelectric speed sensor (measurement range 0-5000r / min, accuracy ±1r / min). The neural network processing module adopts a multilayer sensor structure, with 4 neurons in the input layer (corresponding to oil temperature, oil pressure, oil volume, and speed), 2 hidden layers (10 neurons per layer), and 1 neuron in the output layer (corresponding to the anomaly judgment result). It is trained with 1000 sets of historical test data, and the anomaly recognition accuracy rate is 99%. The audible and visual alarm uses a red LED warning light and a buzzer, with an alarm volume ≥80dB.

[0080] It also includes: control module 6; the control module 6 includes a Siemens S7-1200 PLC controller and a 10-inch industrial touch screen. The PLC controller is electrically connected to the drive dynamometer 4, weight sensor, sensor assembly, neural network processing module, and audible and visual alarm, and can realize functions such as speed adjustment, data acquisition, and abnormal handling; the touch screen can set test parameters, display real-time data, store and export test reports.

[0081] On the other hand, the present invention provides a method for testing the distribution of transmission lubricating oil, applied to the aforementioned device; the method includes the following steps:

[0082] S1: Sample connection and inspection steps: Fix the transmission sample without a hydraulic torque converter on the test bench 1 to ensure that the transmission sample is installed firmly; connect the transmission sample to the drive dynamometer 4 through the connecting fixture 3, align the adapter flange with the mounting flange of the transmission sample and fix it with bolts to ensure that the sealing components are installed in place;

[0083] S2: Oil collection and measurement module 5 preparation steps: The branch collection cover is fitted onto the input shaft of the transmission sample, and the position of the branch collection cover is adjusted so that each collection chamber in the branch collection chamber can cover the outer peripheral area of ​​the input shaft corresponding to a single lubricating oil hole.

[0084] S3: Configure the operating test parameters for the test conditions; the operating test parameters include at least: static test parameters and dynamic test parameters; wherein, the static test parameters include at least: preset oil temperature, settling time, and test duration; the dynamic test parameters include at least: input shaft speed, test duration, preset oil temperature, and abnormal warning threshold;

[0085] S4: Based on the operating test parameters configured in step S3, measure the oil distribution data of each lubricating oil hole in the input shaft of the transmission sample under dynamic test conditions and static test conditions respectively; wherein, the oil distribution data includes at least: static distribution data and dynamic distribution data; the static distribution data includes at least: the oil distribution of each lubricating oil hole within a preset time period, and the proportion of the oil volume of each lubricating oil hole to the total distributed oil volume; the dynamic distribution data includes at least: the oil distribution of each lubricating oil hole, the total oil volume, and the distribution ratio at different speeds and different time points.

[0086] In one specific embodiment, step S5 is also included;

[0087] Step S5 specifically includes:

[0088] Anomaly warning and handling steps: During the test, the first data is collected in real time by the sensor components and transmitted to the neural network processing module; the first data includes at least: the oil temperature, oil pressure, oil quantity and input shaft speed data of the transmission sample;

[0089] The neural network processing module performs real-time analysis on the first data. If abnormal data is detected, it outputs an abnormal signal to the audible and visual alarm, which then provides an alarm notification.

[0090] In one specific embodiment, step S0 is included before step S1;

[0091] Step S0 specifically includes:

[0092] Based on the injection angle and injection orifice diameter of the lubricating oil hole on the input shaft of the transmission sample, the annular space size of each collection chamber in the branch collection cover is determined respectively; the annular space size includes at least: radial depth and axial width; wherein, the larger the injection angle and injection orifice diameter of the lubricating oil hole, the larger the corresponding annular space size; based on the fixed constraint of the outer contour size of the branch collection cover, the larger the axial width of the collection chamber, the smaller the thickness of the partition sidewall of the collection chamber.

[0093] Example

[0094] Static test operation method:

[0095] S1. Device Connection and Inspection: Fix the transmission sample without hydraulic torque converter on the test bench, ensuring that the sample is firmly installed; connect the transmission sample to the drive dynamometer 4 through the connecting fixture 3, align the adapter flange with the transmission flange and fix it with bolts, ensuring that the sealing components are installed in place, check the sealing performance, and confirm that there is no leakage or looseness; check the fit between the drive shaft and the bearing housing to ensure flexible rotation.

[0096] S2. Measurement Module Preparation: Check the oil collection and measurement module 5, adjust the position of the branch collection cover to ensure that each collection chamber of the collection cover is accurately aligned with each oil hole of the input shaft without offset; clean each metering container, zero it under no-load, place it on the corresponding weight sensor, check the connection between the weight sensor and the control module 6 to ensure normal data transmission; check the connection of the guide pipe to ensure that there is no blockage or leakage.

[0097] S3. Test parameter setting: Set static test parameters through the touch screen of control module 6, including preset oil temperature (usually room temperature 25±5℃), settling time, and test duration; turn off drive dynamometer 4 to ensure that the input shaft is stationary; inject a preset amount of lubricating oil into the transmission, the amount injected being consistent with the amount of lubricating oil when the transmission is actually working.

[0098] S4. Oil collection and measurement: Keep the oil temperature stable within the preset range. After standing for a preset time, start the oil collection and measurement module 5 to start collecting the oil leakage from each lubrication hole of the input shaft. The weight sensor collects the weight data of the oil in each measuring container in real time and transmits the data to the control module 6. The control module 6 automatically records the oil distribution of each oil hole within a preset time period and calculates the proportion of oil in each oil hole to the total distributed oil.

[0099] S5. Test End and Cleanup: After the preset test duration is reached, stop the oil collection and measurement module 5, export the test data (including oil volume of each oil hole, total oil volume, distribution ratio, etc.) through the touch screen; disassemble the branch collection cover, clean the metering container and guide pipe, and remove residual oil; shut down the test system, tidy up the test bench, and complete the static test.

[0100] 2) Dynamic test operation method:

[0101] S1. Device Connection and Inspection: Repeat static test steps S1-S2 to complete the connection and sealing inspection of the transmission sample and drive dynamometer 4, as well as the preparation of the oil collection and measurement module 5, to ensure that all components are operating normally.

[0102] S2. Test Parameter Setting: Dynamic test parameters are set via the touch screen of control module 6, including input shaft speed (multiple speed levels can be set according to test requirements, such as 500r / min, 1000r / min, 2000r / min), test duration, and preset oil temperature; abnormal warning thresholds are set (such as upper limit of oil temperature 100℃, oil pressure range 0.2-0.5MPa); the automatic alarm module 7 is activated to check the working status of sensor components, neural network processing module and audible and visual alarm to ensure that the abnormal warning function is normal.

[0103] S3. Test Start: Inject a preset amount of lubricating oil into the transmission, start the drive dynamometer 4, and drive the input shaft of the transmission sample to rotate stably at a preset speed through the connecting fixture 3; start the oil temperature control system 8 to adjust the oil temperature to a preset range and keep it stable, simulating the temperature conditions of the transmission sample when it is actually working.

[0104] S4. Oil Collection and Data Recording: Start the oil collection and measurement module 5 to collect the oil injection volume of each oil hole on the input shaft in real time. The weight sensor transmits the oil weight data in each metering container to the control module 6 in real time. The control module 6 records the oil distribution data at different speeds and time points, including the oil volume of each oil hole, the total oil volume, the distribution ratio, etc., and displays the test data in real time for easy observation by the staff.

[0105] S5. Abnormal Warning and Handling: During the test, the sensor components collect data such as oil temperature, oil pressure, total oil supply, and input shaft speed in real time and transmit them to the neural network processing module. The neural network processing module analyzes the data in real time. If abnormal data is detected (such as oil temperature exceeding 100℃ or oil pressure below 0.2MPa), it immediately sends an abnormal signal to the control module 6. The control module 6 triggers an audible and visual alarm, issues a warning signal, and displays the abnormal type and abnormal data on the touch screen. The operator can handle the abnormal situation accordingly. If the abnormality is serious, the control module automatically stops driving the dynamometer and the test process to avoid equipment damage.

[0106] S6. Test Completion and Cleanup: After completing the test at all preset speed settings, turn off the drive dynamometer, oil temperature control system 8, and oil quantity collection and measurement module 5 in sequence; export the test data through the touch screen, compare the oil quantity distribution of each oil hole at different speeds, and analyze the influence of speed on oil quantity distribution; disassemble the branch collection cover, clean the metering container, guide pipe and connecting tool 3, and remove residual oil; shut down the test system, tidy up the test bench, and complete the dynamic test.

[0107] As can be seen from the above, the present invention has the following advantages:

[0108] 1. Capable of meeting both static and dynamic working conditions, with high testing efficiency and low cost: This device can flexibly switch between static and dynamic testing modes through the control module without changing equipment or tooling. It can measure the oil leakage of each lubrication hole of the input shaft under static working conditions, and measure the oil injection volume at different speeds under dynamic working conditions. It effectively solves the problem that existing devices cannot handle both working conditions, reduces equipment investment costs, and improves testing efficiency.

[0109] 2. Solving the oil backflow problem and ensuring high test accuracy: The connecting fixture adopts a design combining an adapter flange and a double sealing structure, which not only achieves a stable connection between the transmission sample without a hydraulic torque converter and the drive dynamometer, but also effectively prevents oil backflow into the original hydraulic torque converter placement cavity, avoiding interference from oil backflow on the test data and ensuring the accuracy of the test results; at the same time, the drive shaft is connected by a spline, ensuring the coaxiality and stability of the input shaft rotation, further improving the reliability of dynamic testing.

[0110] 3. Precise oil volume measurement and high data reliability: The oil volume collection and measurement module 5 adopts a branch collection and individual metering method. Each oil hole corresponds to an independent collection chamber and metering container. Combined with a high-precision weight sensor, it can accurately measure the oil volume distributed in each oil hole with a measurement accuracy of not less than 0.1g. This solves the problem that the traditional whole collection method cannot distinguish the oil volume of each oil hole and has a large measurement error. The anti-oil-sticking design of the collection cover and guide tube reduces oil residue and further improves the measurement accuracy.

[0111] 4. High level of intelligence and good test safety: The automatic alarm module 7, combined with neural network algorithms, can analyze test data in real time, accurately identify test anomalies, issue early warning signals in a timely manner, and even automatically stop the test to avoid test failure or equipment damage caused by failure to handle anomalies in time; the control module realizes the automatic setting of test parameters, real-time data acquisition and processing, convenient operation, reduced manual intervention, and improved the intelligence level and safety of the test.

[0112] 5. High versatility and wide applicability: The adapter flange of the connecting tooling can be adapted to the flange size of different transmission models, and the oil distribution collection cover can be adjusted according to the number and position of the input shaft oil holes. It can be used for a variety of traditional transmission models, with high versatility. It can be widely used in the lubricating oil distribution performance test in the transmission research and development and production process, and provide reliable test data support for the optimized design of the transmission lubrication system.

[0113] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A transmission lubricating oil distribution test device, characterized in that, Includes connecting fixtures, a drive dynamometer, and an oil quantity collection and measurement module; The connecting fixture is used to seal and connect the transmission sample and the drive dynamometer; wherein the drive dynamometer is used to drive the input shaft of the transmission sample to rotate. The oil collection and measurement module is located outside the output shaft of the transmission sample and is used to measure the amount of oil distributed in each lubrication hole on the input shaft.

2. The transmission lubricating oil distribution test device according to claim 1, characterized in that, It also includes a test bench and an automatic alarm module; The test bench is used to support the connecting fixture and drive the dynamometer; The automatic alarm module is installed on the transmission sample and the drive dynamometer to detect in real time whether the test conditions are normal; wherein, the test conditions include at least: dynamic test conditions and static test conditions.

3. The transmission lubricating oil distribution test device according to claim 2, characterized in that, The connecting fixture includes: an adapter flange, a sealing assembly, a drive shaft, and a bearing housing; The adapter flange is matched and connected to the mounting flange of the transmission sample; the center of the adapter flange is provided with a through hole for the drive shaft to pass through; wherein, the transmission sample is not equipped with a hydraulic torque converter; The drive shaft has one end connected to the input shaft of the transmission sample via a spline through a through hole, and the other end connected to the output end of the drive dynamometer via a spline. The sealing assembly includes a sealing ring made of fluororubber and a sealing gasket made of oil-resistant rubber; wherein, the sealing ring is disposed in an annular groove on one side surface of the transition flange, and is used to seal the fitting gap between the transition flange and the mounting flange of the transmission hydraulic torque converter; the sealing gasket is disposed between an annular oil baffle inside the transition flange and the input shaft of the transmission sample; wherein, the inner surface of the annular oil baffle is provided with a sealing groove for installing the sealing gasket. A deep groove ball bearing is installed on the bearing housing, the deep groove ball bearing is sleeved on the outside of the drive shaft, and is connected to the test bench through the bearing housing.

4. The transmission lubricating oil distribution test device according to claim 3, characterized in that, The oil volume collection and measurement module includes: a branch collection cover, a guide pipe, a metering container, and a weight sensor; The branch collection cover is arranged on the input shaft of the transmission sample and fixed on the test bench; The branch collection cover has a collection chamber inside that is the same number as the number of lubricating oil holes; each collection chamber is covered with the outer peripheral area of ​​the input shaft corresponding to a single lubricating oil hole, for collecting the distributed lubricating oil flowing out of the corresponding lubricating oil hole; The bottom of each collection chamber is connected to a measuring container via a guide tube; wherein the measuring container is arranged above the weight sensor.

5. The transmission lubricating oil distribution test device according to claim 4, characterized in that, The collection chamber is an annular cover with an opening on the inner side; the annular cover covers the outer surface of the input shaft, and an annular space is formed between it and the outer surface of the input shaft at the corresponding lubricating oil hole position, through which the distributed lubricating oil flowing out of the lubricating oil hole is collected; The radial depth and axial width of the annular space are determined based on the injection angle and injection orifice diameter of the lubricating oil hole.

6. The transmission lubricating oil distribution test device according to claim 5, characterized in that, The branch collection cover is made of polycarbonate; the inner wall of the guide pipe is provided with a polytetrafluoroethylene anti-oil coating.

7. The transmission lubricating oil distribution test device according to claim 6, characterized in that, The automatic alarm module includes: a sensor assembly, an audible and visual alarm, and a neural network processing module; The sensor assembly includes at least: an oil temperature sensor, an oil pressure sensor, an oil quantity sensor, and a photoelectric speed sensor; wherein, each sensor is correspondingly mounted on the lubrication oil circuit, oil collection line, and input shaft of the transmission sample, and is used to collect operating parameters; The neural network processing module is used to determine whether the test conditions are normal based on the first data collected by the sensor components; wherein, the first data includes at least: oil temperature, oil pressure, oil quantity and speed data of the transmission sample; The neural network processing module is configured to output an abnormal signal to an audible and visual alarm when an abnormal test condition is detected, and to provide an alarm prompt through the audible and visual alarm.

8. A method for testing the distribution of lubricating oil in a transmission, characterized in that, Applied to the apparatus according to any one of claims 1-7; the method comprises the following steps: S1: Sample Connection and Inspection Procedure: Fix the transmission sample without a hydraulic torque converter onto the test bench, ensuring that the transmission sample is securely installed; connect the transmission sample to the drive dynamometer using the connection fixture, align the adapter flange with the mounting flange of the transmission sample and secure it with bolts, ensuring that the sealing components are installed in place; S2: Oil collection and measurement module preparation steps: The branch collection cover is fitted onto the input shaft of the transmission sample, and the position of the branch collection cover is adjusted so that each collection chamber in the branch collection chamber can cover the outer peripheral area of ​​the input shaft corresponding to a single lubricating oil hole. S3: Configure the operating test parameters for the test conditions; the operating test parameters include at least: static test parameters and dynamic test parameters; wherein, the static test parameters include at least: preset oil temperature, settling time and test duration; the dynamic test parameters include at least: input shaft speed, test duration, preset oil temperature and abnormal warning threshold; S4: Based on the configured operating test parameters, measure the oil distribution data of each lubricating oil hole in the input shaft of the transmission sample under dynamic test conditions and static test conditions respectively; wherein, the oil distribution data includes at least: static distribution data and dynamic distribution data; the static distribution data includes at least: the oil distribution of each lubricating oil hole within a preset time period, and the proportion of the oil volume of each lubricating oil hole to the total distributed oil volume; the dynamic distribution data includes at least: the oil distribution of each lubricating oil hole, the total oil volume, and the distribution ratio at different speeds and different time points.

9. The transmission lubricating oil distribution test method according to claim 8, characterized in that, It also includes step S5; Step S5 specifically includes: Anomaly warning and handling steps: During the test, the first data is collected in real time by the sensor components and transmitted to the neural network processing module; the first data includes at least: the oil temperature, oil pressure, oil quantity and input shaft speed data of the transmission sample; The neural network processing module performs real-time analysis on the first data. If abnormal data is detected, it outputs an abnormal signal to the audible and visual alarm, which then provides an alarm notification.

10. The transmission lubricating oil distribution test method according to claim 8, characterized in that, Step S0 is included before step S1; Step S0 specifically includes: Based on the injection angle and injection orifice diameter of the lubricating oil hole on the input shaft of the transmission sample, the annular space size of each collection chamber in the branch collection cover is determined respectively; the annular space size includes at least: radial depth and axial width; wherein, the larger the injection angle and injection orifice diameter of the lubricating oil hole, the larger the corresponding annular space size; based on the fixed constraint of the outer contour size of the branch collection cover, the larger the axial width of the collection chamber, the smaller the thickness of the partition sidewall of the collection chamber.

Images