CN116067642A - Automatic gearbox valve body testing system and method - Google Patents
Automatic gearbox valve body testing system and method Download PDFInfo
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- CN116067642A CN116067642A CN202111277357.0A CN202111277357A CN116067642A CN 116067642 A CN116067642 A CN 116067642A CN 202111277357 A CN202111277357 A CN 202111277357A CN 116067642 A CN116067642 A CN 116067642A
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- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention provides an automatic gearbox valve body testing system and method, the automatic gearbox valve body testing system comprises: the system comprises a power supply system, a control system, a temperature control system, a hydraulic test system, a hydraulic pipeline and an oil tank; the oil tank is connected with the hydraulic test system through a hydraulic pipeline, and oil in the oil tank flows into the hydraulic test system through the hydraulic pipeline; the power supply system is respectively connected with the control system and the temperature control system. In the scheme, the power supply system, the control system, the temperature control system, the hydraulic test system, the hydraulic pipeline and the oil tank are correspondingly connected, the control system is used for collecting the test signal value of the hydraulic test system, generating a control instruction according to the test signal value, and sending the control instruction to the temperature control system, so that the temperature control system heats or refrigerates oil in the hydraulic pipeline based on the control instruction, and the temperature maintenance time is prolonged and the test error is reduced.
Description
Technical Field
The invention relates to the technical field of automatic gearboxes, in particular to a system and a method for testing valve bodies of an automatic gearbox.
Background
At present, the existing automatic gearbox valve body high-low temperature test system generally adopts a scheme of oil source refrigeration/heating and environmental cabin heat preservation, on one hand, an oil source of a hydraulic system is provided with an independent refrigeration/heating system, the refrigeration/heating system is used for adjusting the temperature of a hydraulic oil source, and on the other hand, a tested hydraulic system is arranged in a high-low temperature environmental cabin so as to ensure that the hydraulic system maintains constant temperature requirements in the working process.
However, when the oil flows in the test bench including the pipeline, if the test oil is to be maintained at the specified temperature, the oil in the oil tank and the pipeline of the whole system need to be controlled in temperature, the power requirement on the oil temperature regulating system is too high, and when the actual oil temperature is at a low temperature, the test requirement can not be met only in a short time. In addition, the temperature maintenance of the valve body can only depend on air convection of the environmental chamber, the temperature maintenance effect is poor, and the temperature maintenance is not in accordance with the actual temperature environment, so that test errors are caused. In practice, the valve body to be tested is generally immersed in oil, and depends on conduction and heat transfer of the oil.
Disclosure of Invention
In view of the above, the embodiments of the present invention provide a system and a method for testing a valve body of an automatic gearbox, so as to achieve the purposes of increasing the temperature maintenance time and reducing the testing error.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
the first aspect of the embodiment of the invention discloses an automatic gearbox valve body testing system, which comprises: the system comprises a power supply system 1, a control system 2, a temperature control system 3, a hydraulic test system 4, a hydraulic pipeline 5 and an oil tank 6;
the oil tank 6 is connected with the hydraulic test system 4 through the hydraulic pipeline 5, and oil in the oil tank 6 flows into the hydraulic test system 4 through the hydraulic pipeline 5;
The hydraulic test system 4 is used for testing the oil to obtain a test signal value;
the control system 2 is used for collecting a test signal value of the hydraulic test system 4, generating a control instruction according to the test signal value and sending the control instruction to the temperature control system 3;
the temperature control system 3 is configured to receive a control instruction sent by the control system 2, and heat or refrigerate oil in the hydraulic pipeline 5 based on the control instruction;
the power supply system 1 is respectively connected with the control system 2 and the temperature control system 3 and is used for providing power for the control system 2 and the temperature control system 3.
Optionally, the hydraulic testing system 4 includes: the testing device comprises a first testing component 7, a heat preservation oil tank 31, a first oil inlet 24, a second oil inlet 25, a tested valve body 29 and a testing tool 23;
the hydraulic line 5 includes: a small diameter hydraulic line 32 and a large diameter hydraulic line 16;
the first test assembly includes: a first main oil pump 21, a pressure indicator 17, a temperature sensor 18, a pressure sensor 19, a relief valve 26, a flow meter 27, and an on-off valve 28;
the tested valve body 29 and the test tool 23 are arranged in the heat preservation oil tank 31, and the bottom of the tested valve body 29 is attached to the top of the test tool 23;
The first oil inlet 24 and the second oil inlet 25 are arranged at the bottom of the heat preservation oil tank 31 and are respectively connected to the bottom of the test tool 23;
an inlet of the first main oil pump 21 is connected with the large-diameter hydraulic pipeline 16, an outlet of the first main oil pump 21 is connected with the first oil inlet 24, and the safety valve 26, the flowmeter 27, the pressure indicator 17, the temperature sensor 18, the pressure sensor 19 and the switch valve 28 are sequentially arranged between the outlet of the first main oil pump 21 and the first oil inlet 24;
the relief valve 26 is used for discharging oil to the outside of the hydraulic test system 4 when the pressure of the oil in the hydraulic pipeline 5 rises above a specified value;
the flowmeter 27 is used for observing and collecting the flow of the oil in the small-diameter hydraulic pipeline 32 in real time;
the temperature sensor 18 is configured to observe and collect the temperature of the oil in the small-diameter hydraulic pipeline 32 in real time;
the pressure sensor 19 is used for observing and collecting the pressure of the oil in the small-diameter hydraulic pipeline 32 in real time;
the switch valve 28 is used for controlling the oil in the small-diameter hydraulic pipeline 32 to flow into the heat preservation oil tank 31.
Optionally, the control system 2 is further configured to: and outputting control instructions to the tested valve body 29 according to the test requirements, so as to realize different test working conditions of the tested valve body 29.
Optionally, the method further comprises: a second test part (8);
the second test assembly 8 and the first test part 7 are connected on the large-diameter hydraulic pipeline 16 and the heat preservation oil tank 31 in parallel;
the second test part 8 comprises: a second main oil pump 22, the pressure indicator 17, the temperature sensor 18, the pressure sensor 19, the relief valve 26, the flow meter 27, and the on-off valve 28;
the inlet of the second main oil pump 22 is connected with the large-diameter hydraulic pipeline 16, the outlet of the second main oil pump 22 is connected with the second oil inlet 25, and the relief valve 26, the flowmeter 27, the pressure indicator 17, the temperature sensor 18, the pressure sensor 19 and the switch valve 28 are sequentially arranged between the outlet of the second main oil pump 22 and the second oil inlet 25.
Optionally, the method further comprises: an overflow aperture 30;
the overflow hole 30 is disposed at a side of the thermal insulation oil tank 31, and has a certain height from the bottom of the thermal insulation oil tank 31, and the height has a corresponding relation with the liquid level of the valve body 29 in the actual use process;
The overflow hole 30 is connected to the inlet of the oil tank 6, and is used for flowing back to the oil tank 6 through the overflow hole 30 when the oil liquid that is actively overflowed or leaked from the valve body 29 to be tested reaches the specified liquid level.
Optionally, the method further comprises: a filter module 33;
the filter module 15 includes: the filter 15 with contaminant indication, a manual valve 20, the pressure indicator 17, the temperature sensor 18 and the pressure sensor 19;
the filter 15 with contaminant indication is connected in parallel with the manual valve 20 on the small diameter hydraulic line 32;
the pressure indicator 17, the temperature sensor 18 and the pressure sensor 19 are sequentially installed on the small-diameter hydraulic pipeline 32 where the filter 11 and the manual valve 20 are located;
the manual valve 20 is used for preventing the filter 15 with the pollutant indication from being blocked due to the exceeding of the oil pollutant.
Optionally, the oil tank 6 includes: a filter 11, a circulation oil pump 12, the temperature sensor 18, the pressure sensor 19, and the relief valve 26;
the filter 11, the temperature sensor 18 and the pressure sensor 19 are arranged inside the oil tank 6, and the filter 11 is arranged at the outlet of the oil tank 6;
The filter 11 is connected with an inlet of the circulating oil pump 12, and an outlet of the circulating oil pump 12 is connected with the temperature control system 3;
the safety valve 26 is externally arranged between the outlet of the circulating oil pump 12 and the temperature control system 3;
the oil in the oil tank 6 is pumped into the small-diameter hydraulic pipeline 32 through the filter 11 by the circulating oil pump 12;
the filter 11 is used for filtering the oil in the oil tank 6;
the temperature sensor 18 is used for observing and collecting the temperature of the oil in the oil tank 6 in real time;
the pressure sensor 19 is used for observing and collecting the pressure of the oil in the oil tank 6 in real time;
the relief valve 26 is used for discharging oil outwards when the pressure of the oil in the small direct hydraulic line 32 rises above a prescribed value.
Optionally, the temperature control system 3 includes: a refrigeration system 14 and a heating system 13;
an inlet of the heating system 13 is connected with an outlet of the circulating oil pump 12, an outlet of the heating system 13 is connected with an inlet of the refrigerating system 14, and an outlet of the refrigerating system 14 is connected with an inlet of the first main oil pump 21;
the heating system 13 is configured to receive a control instruction sent by the control system 2, and if the control instruction is a heating control instruction, heat the oil in the hydraulic pipeline 5 based on the heating control instruction;
The refrigeration system 14 is configured to receive a control instruction sent by the control system 2, and if the control instruction is a refrigeration control instruction, heat the oil in the hydraulic pipeline 5 based on the refrigeration control instruction.
Optionally, the control system 2 includes: an acquisition module 9 and a control module 10;
the input end of the acquisition module 9 is respectively in signal connection with the oil tank 6, the hydraulic pipeline 5 and the hydraulic test system 4, the output end of the acquisition module 9 is in signal connection with the input end of the control module 10, and the output end of the control module 10 is respectively in signal connection with the heating system 13, the refrigerating system 14 and the hydraulic test system 4;
the acquisition module 9 is used for acquiring test signal values of the hydraulic test system 4, the hydraulic pipeline 5 and the oil tank 6;
the control module 10 is configured to generate a control instruction according to the test signal value, send the control instruction to the temperature control system 3, and control the valve body 29 to be tested according to a test requirement to implement different test functions.
The second aspect of the embodiment of the invention discloses an automatic gearbox valve body testing method, which is applied to the automatic gearbox valve body testing system of any one of the first aspect of the embodiment of the invention, and comprises the following steps:
Pumping oil in an oil tank into a small-diameter hydraulic pipeline through a filter by a circulating oil pump, and heating or refrigerating the oil in the small-diameter hydraulic pipeline to a required temperature by a heating system or a refrigerating system to obtain regulated oil;
the regulated oil flows into a large-diameter hydraulic pipeline through a filtering module;
the first main oil pump enables the regulated oil in the large-diameter hydraulic pipeline to enter the tested valve body through a first oil inlet of a heat-insulating oil tank, and the second main oil pump enables the regulated oil in the large-diameter hydraulic pipeline to enter the tested valve body through a second oil inlet of the heat-insulating oil tank, so that the regulated oil in the tested valve body is tested;
the valve body to be tested receives a control instruction output by the control system;
the measured valve body actively overflows or passively leaks the regulated oil according to a control instruction;
when the oil liquid which is actively overflowed or passively leaked by the tested valve body reaches the specified liquid level, the oil liquid flows back to the oil tank through the small-diameter hydraulic pipeline through the overflow hole, and meanwhile, the oil return flow is observed and collected by the flow meter.
Based on the above-mentioned embodiment of the present invention, an automatic gearbox valve body testing system and method provided by the present invention, the automatic gearbox valve body testing system includes: the system comprises a power supply system, a control system, a temperature control system, a hydraulic test system, a hydraulic pipeline and an oil tank; the oil tank is connected with the hydraulic test system through the hydraulic pipeline, and oil in the oil tank flows into the hydraulic test system through the hydraulic pipeline; the hydraulic testing system is used for testing the oil to obtain a testing signal value; the control system is used for collecting a test signal value of the hydraulic test system, generating a control instruction according to the test signal value and sending the control instruction to the temperature control system; the temperature control system is used for receiving a control instruction sent by the control system and heating or refrigerating the oil in the hydraulic pipeline based on the control instruction; the power supply system is respectively connected with the control system and the temperature control system and is used for providing power for the electric control module, the control system and the temperature control system. In the scheme, the power supply system, the control system, the temperature control system, the hydraulic testing system, the hydraulic pipeline and the oil tank are correspondingly connected, the control system is used for collecting the test signal value of the hydraulic testing system, generating a control instruction according to the test signal value and sending the control instruction to the temperature control system, so that the temperature control system heats or refrigerates oil in the hydraulic pipeline based on the control instruction, the temperature of an inlet of a valve body to be tested is ensured to be in a required temperature range, and temperature attenuation in the pipeline is reduced. In addition, the valve body is immersed in the oil environment, so that the test environment is consistent with the actual use, and the aim of reducing test errors is fulfilled.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a valve body testing system for an automatic transmission according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a valve body testing system for an automatic transmission according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of a method for testing a valve body of an automatic gearbox according to an embodiment of the present invention;
the device comprises a power supply system 1, a control system 2, a temperature control system 3, a hydraulic test system 4, a hydraulic pipeline 5, an oil tank 6, a first test component 7, a second test component 8, an acquisition module 9, a control module 10, a filter 11, a circulating oil pump 12, a heating system 13, a refrigerating system 14, a filter 15 for indicating pollutants, a large-diameter hydraulic pipeline 16, a pressure indicator 17, a temperature sensor 18, a pressure sensor 19, a manual valve 20, a first main oil pump 21, a second main oil pump 22, a test fixture 23, a first oil inlet 24, a second oil inlet 25, a safety valve 26, a flowmeter 27, a switch valve 28, a tested valve body 29, an overflow hole 30, a heat-preserving oil tank 31, a small-diameter hydraulic pipeline 32 and a filtering module 33.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In this application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
According to the background technology, in the existing automatic gearbox valve body high-low temperature test system, when the actual oil temperature is at a low temperature, the actual oil temperature can be maintained for a short time, the test requirement cannot be met, in addition, the temperature maintenance of the valve body can only depend on the air convection of an environmental cabin, the temperature maintenance effect is poor, and the temperature maintenance is inconsistent with the actual temperature environment, so that the test error is caused.
Therefore, the embodiment of the invention provides an automatic gearbox valve body testing system and method, in the scheme, a power supply system, a control system, a temperature control system, a hydraulic testing system, a hydraulic pipeline and an oil tank are correspondingly connected, a control system is used for collecting a testing signal value of the hydraulic testing system, a control instruction is generated according to the testing signal value, the control instruction is sent to the temperature control system, the temperature control system is enabled to heat or refrigerate oil in the hydraulic pipeline based on the control instruction, and therefore the temperature of an inlet of a tested valve body is ensured to be in a required temperature range, and temperature attenuation in the pipeline is reduced. In addition, the valve body is immersed in the oil environment, so that the test environment is consistent with the actual use, and the aim of reducing test errors is fulfilled.
Fig. 1 is a schematic structural diagram of a valve body testing system for an automatic gearbox according to an embodiment of the present invention.
The automatic gearbox valve body test system comprises: the system comprises a power supply system 1, a control system 2, a temperature control system 3, a hydraulic testing system 4, a hydraulic pipeline 5 and an oil tank 6.
In the embodiment of the invention, the power supply system 1, the control system 2, the temperature control system 3, the hydraulic test system 4, the hydraulic pipeline 5 and the oil tank 6 are correspondingly connected together.
Specifically, the oil tank 6 is connected to the hydraulic test system 4 through a hydraulic line 5.
Preferably, in one embodiment, the hydraulic line 5 comprises two small diameter hydraulic lines, the oil in the oil tank 6 flowing into the hydraulic test system 4 via a first small diameter hydraulic line, and the excess oil flowing back into the oil tank 6 via a second small diameter hydraulic line.
Preferably, in another embodiment, the hydraulic pipeline 5 comprises a small-diameter hydraulic pipeline and a large-diameter hydraulic pipeline, the oil in the oil tank 6 flows into the large-diameter hydraulic pipeline through the small-diameter hydraulic pipeline, then flows into the hydraulic test system 4 through the large-diameter hydraulic pipeline, and the redundant oil flows back to the oil tank 6 through the small-diameter hydraulic pipeline.
Specifically, the power supply system 1 is respectively connected with the control system 2 and the temperature control system 3, and is used for providing power for the control system 2 and the temperature control system 3.
In a specific implementation, the power supply system 1 is respectively connected with the control system 2 and the temperature control system 3 through power supply pipelines.
The control system 2 is respectively connected with the temperature control system 3, the hydraulic test system 4, the hydraulic pipeline 5 and the oil tank 6 through signal pipelines.
And the hydraulic testing system 4 is used for testing the tested valve body to obtain a test signal value.
Preferably, in one embodiment, the hydraulic test system 4 tests the valve body under test for pressure, flow and temperature, but is not limited thereto.
Alternatively, the test signal value may be a pressure value of the oil, a flow value, or a temperature value, but is not limited thereto.
The control system 2 is used for collecting the test signal value of the hydraulic test system 4, generating a control instruction according to the test signal value, sending the control instruction to the temperature control system 3, and outputting the control instruction to the tested valve body 29 according to the test requirement, so as to realize different test working conditions of the tested valve body 29.
The temperature control system 3 is used for receiving the control instruction sent by the control system 2 and heating or refrigerating the oil in the hydraulic pipeline 5 based on the control instruction.
It can be understood that the temperature control system 3 heats or refrigerates the oil in the hydraulic pipeline 5 based on the control instruction, so as to adjust the temperature of the oil in the hydraulic pipeline 5, and realize the adjustment of the test temperature from-40 ℃ to 140 ℃.
Preferably, in a specific embodiment, the control command may be a heating control command or a cooling control command.
The temperature control system 3 heats the oil in the hydraulic line 5 based on the heating control instruction.
The temperature control system 3 refrigerates the oil in the hydraulic pipeline 5 based on the refrigeration control instruction.
Referring to fig. 1, fig. 2 is a schematic diagram of a valve body testing system of an automatic gearbox according to an embodiment of the present invention.
Specifically, with reference to fig. 1 and 2, the hydraulic test system 4 includes: the testing device comprises a first testing component 7, a thermal insulation oil tank 31, a first oil inlet 24, a second oil inlet 25, a tested valve body 29 and a testing tool 23.
Wherein the hydraulic line 5 comprises: a small diameter hydraulic line 32 and a large diameter hydraulic line 16.
Optionally, small diameter hydraulic line 32 is model number DN20 and large diameter hydraulic line 16 is model number DN50.
The first test assembly 7 comprises: a first main oil pump 21, a pressure indicator (17), a temperature sensor 18, a pressure sensor 19, a relief valve 26, a flow meter 27, and an on-off valve 28.
In specific implementation, the valve body 29 to be tested and the test tool 23 are arranged inside the thermal insulation oil tank 31, and the bottom of the valve body 29 to be tested is attached to the top of the test tool 23.
It should be noted that a certain height is set between the bottom of the test fixture 23 and the bottom of the thermal insulation oil tank 31.
Preferably, in one embodiment, the valve body 29 to be tested and the test fixture 23 are disposed inside a thermal tank 31 with a cover.
The valve body 29 to be tested is used for receiving the control command output by the control system 2 according to the test requirement and testing different working conditions according to the control command.
In other words, in an embodiment of the present invention, the control system 2 is further configured to: and outputting control instructions to the tested valve body 29 according to the test requirements, so as to realize different test working conditions of the tested valve body 29.
The first oil inlet 24 and the second oil inlet 25 are arranged at the bottom of the heat preservation oil tank 31 and are respectively connected to the bottom of the test fixture 23.
An inlet of the first main oil pump 21 is connected with the large-diameter hydraulic pipeline 16, an outlet of the first main oil pump 21 is connected with the first oil inlet 24, and a safety valve 26, a flow meter 27, a pressure indicator 17, a temperature sensor 18, a pressure sensor 19 and a switching valve 28 are sequentially arranged between the outlet of the first main oil pump 21 and the first oil inlet 24.
It will be appreciated that a relief valve 26, a flow meter 27, a pressure indicator 17, a temperature sensor 18, a pressure sensor 19 and a switching valve 28 are provided on the small diameter hydraulic line 32 between the outlet of the first main oil pump 21 and the first oil inlet 24.
In a specific implementation, the inlet of the first main oil pump 21 is connected to the outlet of the large-diameter hydraulic line 16, and the inlet of the large-diameter hydraulic line 16 is connected to the outlet of the oil tank 6 through the small-diameter hydraulic line 32.
The outlet of the large-diameter hydraulic line 16 is connected to the inlet of the tank 6.
The order of installing the relief valve 26, the flow meter 27, the pressure indicator 17, the temperature sensor 18, the pressure sensor 19, and the on-off valve 28 may be set according to the specific requirements of the test, and the present invention is not limited thereto.
A relief valve 26 for discharging the oil to the outside of the hydraulic test system 4 when the pressure of the oil in the hydraulic line 5 rises above a prescribed value. That is, when the pressure of the oil in the small-diameter hydraulic line 32 rises above a prescribed value, the oil is discharged to the outside of the hydraulic test system 4.
A flow meter 27 for observing and collecting the flow rate of the oil in the hydraulic line 5 in real time. That is, the flow rate of the oil in the small-diameter hydraulic line 32 is observed and collected in real time.
The pressure indicator 17 is used for displaying the pressure of the oil in the hydraulic pipeline 5 in real time. That is, the pressure of the oil in the small-diameter hydraulic line 32 is displayed in real time.
And the temperature sensor 18 is used for observing and collecting the temperature of the oil in the hydraulic pipeline 5 in real time. That is, the temperature of the oil in the small-diameter hydraulic line 32 is observed and collected in real time.
The pressure sensor 19 is used for observing and collecting the pressure of the oil in the hydraulic pipeline 5 in real time. That is, the pressure of the oil in the small-diameter hydraulic line 32 is observed and collected in real time.
The switch valve 28 is used for controlling the oil in the hydraulic pipeline 5 to flow into the heat preservation oil tank 31. That is, the oil in the small-diameter hydraulic line 32 is controlled to flow into the thermal insulation oil tank 31.
Specifically, the hydraulic test system 4 further includes: a second test part 8.
In the embodiment of the invention, the second test assembly 8 is connected in parallel with the first test part 7 on the hydraulic line 5 and the thermal tank 31.
That is, the second test assembly 8 is connected in parallel with the first test part 7 to the large-diameter hydraulic line 16 and the thermal tank 31.
Wherein the second test part 8 comprises: the second main oil pump 22, the pressure indicator 17, the temperature sensor 18, the pressure sensor 19, the relief valve 26, the flow meter 27, and the on-off valve 28.
In a specific implementation, the inlet of the second main oil pump 22 is connected to the oil tank 6. That is, the inlet of the second main oil pump 22 is connected to the outlet of the large-diameter hydraulic line 16, and the inlet of the large-diameter hydraulic line 16 is connected to the oil tank 6 through the small-diameter hydraulic line 32.
An outlet of the second main oil pump 22 is connected with a second oil inlet 25, and a safety valve 26, a flowmeter 27, a pressure indicator 17, a temperature sensor 18, a pressure sensor (19) and a switch valve 28 are sequentially arranged between the outlet of the second main oil pump 22 and the second oil inlet 25.
It will be appreciated that the hydraulic line 5 between the outlet of the second main oil pump 22 and the second oil inlet 25 is provided with a relief valve 26, a flow meter 27, a pressure indicator 17, a temperature sensor 18, a pressure sensor 19 and a switching valve 28.
The structure, principle and installation sequence of the safety valve 26, the flow meter 27, the pressure indicator 17, the temperature sensor 18, the pressure sensor 19 and the switching valve 28 are the same as those of the safety valve 26, the flow meter 27, the pressure indicator 17, the temperature sensor 18, the pressure sensor 19 and the switching valve 28 in the first test assembly 7, and will not be described again here.
Specifically, the hydraulic test system 4 further includes: and an overflow aperture 30.
In a specific implementation, the overflow hole 30 is disposed at a side of the thermal insulation oil tank 31, and is at a certain height from the bottom of the thermal insulation oil tank 31.
There is a correspondence between the height of the overflow hole 30 and the level of the liquid carried by the insulating tank 31. In other words, the height of the overflow aperture 30 is determined by the liquid level of the actual product application environment.
The overflow hole 30 is connected to the inlet of the oil tank 6, and is used for flowing back to the oil tank 6 through the overflow hole 30 when the oil liquid actively overflows or leaks from the valve body 29 to be tested reaches the designated liquid level.
In the present embodiment, the overflow hole 30 is connected to the inlet of the tank 6 through the hydraulic line 5. That is, the overflow hole 30 is connected to the inlet of the tank 6 through a small-diameter hydraulic line 32.
The height of the overflow hole 30 is identical to the oil level of the actual oil pan of the transmission, so as to simulate the actual oil immersion position of the valve body 29 to be tested in the transmission.
A flow meter 27 is provided in the hydraulic line 5 between the overflow hole 30 and the inlet of the tank 6. That is, a flow meter 27 is provided on a small-diameter hydraulic line 32 between the overflow hole 30 and the inlet of the tank 6.
The flowmeter 27 is used for observing and collecting the return oil flow of the oil in the process that the oil actively overflows or leaks from the valve body 29 to be tested reaches the designated liquid level and then flows back to the oil tank 6 through the overflow hole 30.
Specifically, the hydraulic test system 4 further includes: a filter module 33.
Wherein the filtering module 33 comprises: a filter 15 with contaminant indication, a manual valve 20, a pressure indicator 17, a temperature sensor 18 and a pressure sensor 19.
In a specific implementation, a filter 15 with a contaminant indication is connected in parallel with the manual valve 20 on the hydraulic line 5.
That is, the filter 15 with contaminant indication is connected in parallel with the manual valve 20 on the small diameter hydraulic line 32.
A pressure indicator 17, a temperature sensor 18 and a pressure sensor 19 are mounted in this order on the hydraulic line 5 where the filter 15 with contaminant indication is located.
In other words, the filter 15 with contaminant indication and the manual valve 20 may be connected in parallel to the small-diameter hydraulic line 32, and then the pressure indicator 17, the temperature sensor 18, and the pressure sensor 19 may be sequentially installed to the small-diameter hydraulic line 32 where the filter 15 with contaminant indication and the manual valve 20 are located.
It should be noted that the order of installing the pressure indicator 17, the temperature sensor 18, and the pressure sensor 19 may be set according to the specific requirements of the test, and the present invention is not limited thereto.
A manual valve 20 for preventing the oil contamination from exceeding the standard and causing the filter 15 with the indication of the contamination to be blocked.
Specifically, with reference to fig. 1 and 2, the oil tank 6 includes: a filter 11, a circulation oil pump 12, a temperature sensor 18, a pressure sensor 19 and a relief valve 26.
In a specific implementation, the filter 11, the temperature sensor 18 and the pressure sensor 19 are arranged inside the tank 6, and the filter 11 is arranged at the outlet of the tank 6.
The filter 11 is connected to an inlet of the circulation oil pump 12, and an outlet of the circulation oil pump 12 is connected to the temperature control system 3.
The safety valve 26 is externally arranged between the outlet of the circulating oil pump 12 and the temperature control system 3.
In the embodiment of the invention, the oil in the oil tank 6 is pumped into the hydraulic line 5 via the filter 11 by means of the circulation oil pump 12.
That is, the oil in the oil tank 6 is pumped into the small-diameter hydraulic line 32 through the filter 11 by the circulation oil pump 12.
And a filter 11 for filtering the oil in the oil tank 6.
And the temperature sensor 18 is used for observing and collecting the temperature of the oil in the oil tank 6 in real time.
And the pressure sensor 19 is used for observing and collecting the pressure of the oil in the oil tank 6 in real time.
A relief valve 26 for discharging the oil outwardly when the pressure of the oil in the hydraulic line 5 rises above a prescribed value. That is, when the pressure of the oil in the small-diameter hydraulic line 32 between the outlet of the circulation oil pump 12 and the temperature control system 3 rises above a prescribed value, the oil is discharged to the outside.
Specifically, with reference to fig. 1 and 2, the temperature control system 3 includes: a refrigeration system 14 and a heating system 13.
In a specific implementation, the inlet of the heating system 13 is connected to the outlet of the circulating oil pump 12, the outlet of the heating system 13 is connected to the inlet of the refrigeration system 14, and the outlet of the refrigeration system 14 is connected to the inlet of the first main oil pump 21.
In more detail, the inlet of the heating system 13 is connected to the outlet of the circulation oil pump 12 through a small-diameter hydraulic line 32, the outlet of the heating system 13 is connected to the inlet of the refrigerating system 14 through the small-diameter hydraulic line 32, and the outlet of the refrigerating system 14 is connected to the inlet of the filter module 15 through the small-diameter hydraulic line 32.
And the heating system 13 is used for receiving the control command sent by the control system 2, and heating the oil in the hydraulic pipeline 5 based on the heating control command if the control command is the heating control command.
And the refrigerating system 14 is used for receiving the control command sent by the control system 2, and heating the oil in the hydraulic pipeline 5 based on the refrigerating control command if the control command is the refrigerating control command.
Specifically, in connection with fig. 1, the control system 2 includes: an acquisition module 9 and a control module 10.
In a specific implementation, the input end of the acquisition module 9 is respectively connected with the oil tank 6, the hydraulic pipeline 5 and the hydraulic test system 4 in a signal manner, the output end of the acquisition module 9 is connected with the input end of the control module 10 in a signal manner, and the output end of the control module 10 is respectively connected with the heating system 13, the refrigerating system 14 and the hydraulic test system 4 in a signal manner.
In more detail, the input end of the collecting module 9 is respectively connected with the oil tank 6, the hydraulic pipeline 5 and the hydraulic test system 4 through signal pipelines, the output end of the collecting module 9 is connected with the input end of the control module 10 through signal pipelines, and the output end of the control module 10 is respectively connected with the heating system 13, the refrigerating system 14 and the hydraulic test system 4 through signal pipelines.
And the acquisition module 9 is used for acquiring the test signal values of the hydraulic test system 4, the hydraulic pipeline 5 and the oil tank 6.
The control module 10 is configured to generate a control instruction according to the test signal value, send the control instruction to the temperature control system 3, and control the valve body 29 to be tested according to the test requirement to implement different test functions.
According to the embodiment of the invention, the automatic gearbox valve body testing system comprises: the system comprises a power supply system, a control system, a temperature control system, a hydraulic test system, a hydraulic pipeline and an oil tank; the oil tank is connected with the hydraulic test system through a hydraulic pipeline, and oil in the oil tank flows into the hydraulic test system through the hydraulic pipeline; the hydraulic testing system is used for testing the oil to obtain a testing signal value; the control system is used for collecting a test signal value of the hydraulic test system, generating a control instruction according to the test signal value and sending the control instruction to the temperature control system; the temperature control system is used for receiving the control instruction sent by the control system and heating or refrigerating the oil in the hydraulic pipeline based on the control instruction; the power supply system is respectively connected with the control system and the temperature control system and is used for providing power for the electric control module, the control system and the temperature control system. In the scheme, the power supply system, the control system, the temperature control system, the hydraulic testing system, the hydraulic pipeline and the oil tank are correspondingly connected, the control system is used for collecting the test signal value of the hydraulic testing system, generating a control instruction according to the test signal value and sending the control instruction to the temperature control system, so that the temperature control system heats or refrigerates oil in the hydraulic pipeline based on the control instruction, the temperature of an inlet of a valve body to be tested is ensured to be in a required temperature range, and temperature attenuation in the pipeline is reduced. In addition, the valve body is immersed in the oil environment, so that the test environment is consistent with the actual use, and the aim of reducing test errors is fulfilled.
Corresponding to the automatic transmission valve body test system shown in the above embodiment of the present invention, the embodiment of the present invention further provides an automatic transmission valve body test method, as shown in fig. 3, which mainly includes the following steps:
step S301: the oil in the oil tank is pumped into the small-diameter hydraulic pipeline through the circulating oil pump by the filter, and the heating system or the refrigerating system heats or refrigerates the oil in the small-diameter hydraulic pipeline to the required temperature to obtain the regulated oil.
In the specific implementation step S301, oil in an oil tank is pumped into a small-diameter hydraulic pipeline through a filter by a circulating oil pump, and when a heating system or a refrigerating system receives a control instruction sent by a control system as a heating control instruction, the heating system heats the oil in the small-diameter hydraulic pipeline to a required temperature to obtain heated oil; when the heating system or the refrigerating system receives a control instruction sent by the control system as a refrigerating control instruction, the refrigerating system refrigerates the oil in the small-diameter hydraulic pipeline to a required temperature to obtain the refrigerated oil.
Step S302: the regulated oil flows into a large-diameter hydraulic pipeline through a filtering module.
Step S303: the first main oil pump is used for enabling the regulated oil in the large-diameter hydraulic pipeline to enter the measured valve body through a first oil inlet of the heat-preserving oil tank, and the second main oil pump is used for enabling the regulated oil in the large-diameter hydraulic pipeline to enter the measured valve body through a second oil inlet of the heat-preserving oil tank, so that the regulated oil in the measured valve body is tested.
In the specific implementation step S303, the first main oil pump pumps the adjusted oil in the large-diameter hydraulic pipeline into the first oil inlet of the thermal insulation oil tank, the adjusted oil enters the measured valve body through the first oil inlet of the thermal insulation oil tank, and the second main oil pump pumps the adjusted oil in the large-diameter hydraulic pipeline into the second oil inlet of the thermal insulation oil tank, the adjusted oil enters the measured valve body through the second oil inlet of the thermal insulation oil tank, and the measured oil inside the measured valve body is tested.
Alternatively, the pressure, flow rate and temperature of the regulated oil inside the valve body to be measured may be tested, but is not limited thereto.
Step S304: the valve body to be tested receives a control instruction output by the control system.
Step S305: when an active overflow control command output by the control system is received, the valve body to be tested actively overflows the regulated oil according to the active overflow control command, and meanwhile, the valve body to be tested can have passive leakage due to pressure.
Step S306: and judging whether the oil liquid which is actively overflowed or passively leaked from the tested valve body reaches the designated liquid level, if so, executing the step S307, and if not, returning to execute the step S305.
Step S307: and the oil flows back to the oil tank through the overflow hole through the small-diameter hydraulic pipeline, and meanwhile, the oil return flow is observed and collected by the flow meter.
In the specific implementation step S307, it is determined that the oil that actively overflows or passively leaks from the valve body to be tested reaches the specified liquid level, and then flows back to the oil tank through the overflow hole through the small-diameter hydraulic pipeline, and meanwhile, the oil return flow is observed and collected by using the flowmeter.
According to the method for testing the valve body of the automatic gearbox, provided by the embodiment of the invention, oil in the oil tank is pumped into the small-diameter hydraulic pipeline through the filter by the circulating oil pump, after the heating system or the refrigerating system heats or refrigerates the oil in the small-diameter hydraulic pipeline to a required temperature, the oil flows into the large-diameter hydraulic pipeline, the first main oil pump enables the oil in the large-diameter hydraulic pipeline to enter the tested valve body through the first oil inlet of the heat-insulating oil tank, the second main oil pump enables the regulated oil in the large-diameter hydraulic pipeline to enter the tested valve body through the second oil inlet of the heat-insulating oil tank, the regulated oil in the tested valve body is tested, after the test is completed, the regulated oil is subjected to active overflow or leakage by the tested valve body according to a control instruction output by the received control system, and when the oil which is subjected to active overflow or leakage of the tested valve body reaches a specified liquid level, the oil flows back to the oil tank through the small-diameter hydraulic pipeline, so that the temperature maintenance time is prolonged and the test error is reduced.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for a system or system embodiment, since it is substantially similar to a method embodiment, the description is relatively simple, with reference to the description of the method embodiment being made in part. The systems and system embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An automatic transmission valve body test system, comprising: the device comprises a power supply system (1), a control system (2), a temperature control system (3), a hydraulic test system (4), a hydraulic pipeline (5) and an oil tank (6);
the oil tank (6) is connected with the hydraulic test system (4) through the hydraulic pipeline (5), and oil in the oil tank (6) flows into the hydraulic test system (4) through the hydraulic pipeline (5);
the hydraulic test system (4) is used for testing the oil to obtain a test signal value;
the control system (2) is used for collecting a test signal value of the hydraulic test system (4), generating a control instruction according to the test signal value and sending the control instruction to the temperature control system (3);
The temperature control system (3) is used for receiving a control instruction sent by the control system (2) and heating or refrigerating the oil in the hydraulic pipeline (5) based on the control instruction;
the power supply system (1) is respectively connected with the control system (2) and the temperature control system (3) and is used for providing power for the control system (2) and the temperature control system (3).
2. The system according to claim 1, characterized in that the hydraulic test system (4) comprises: the device comprises a first test assembly (7), a heat preservation oil tank (31), a first oil inlet (24), a second oil inlet (25), a tested valve body (29) and a test tool (23);
the hydraulic line (5) comprises: a small-diameter hydraulic line (32) and a large-diameter hydraulic line (16);
the first test assembly includes: a first main oil pump (21), a pressure indicator (17), a temperature sensor (18), a pressure sensor (19), a relief valve (26), a flow meter (27) and a switching valve (28);
the tested valve body (29) and the test tool (23) are arranged inside the heat-preservation oil tank (31), and the bottom of the tested valve body (29) is attached to the top of the test tool (23);
the first oil inlet (24) and the second oil inlet (25) are arranged at the bottom of the heat preservation oil tank (31) and are respectively connected to the bottom of the test tool (23);
An inlet of the first main oil pump (21) is connected with the large-diameter hydraulic pipeline (16), an outlet of the first main oil pump (21) is connected with the first oil inlet (24), and a safety valve (26), a flowmeter (27), a pressure indicator (17), a temperature sensor (18), a pressure sensor (19) and a switch valve (28) are sequentially arranged between the outlet of the first main oil pump (21) and the first oil inlet (24);
the safety valve (26) is used for discharging oil to the outside of the hydraulic test system (4) when the pressure of the oil in the hydraulic pipeline (5) rises above a specified value;
the flowmeter (27) is used for observing and collecting the flow of the oil in the small-diameter hydraulic pipeline (32) in real time;
the temperature sensor (18) is used for observing and collecting the temperature of the oil in the small-diameter hydraulic pipeline (32) in real time;
the pressure sensor (19) is used for observing and collecting the pressure of the oil in the small-diameter hydraulic pipeline (32) in real time;
the switch valve (28) is used for controlling the oil in the small-diameter hydraulic pipeline (32) to flow into the heat preservation oil tank (31).
3. The system according to claim 2, wherein the control system (2) is further configured to: and outputting control instructions to the tested valve body (29) according to the test requirements, so as to realize different test working conditions of the tested valve body (29).
4. The system of claim 2, further comprising: a second test part (8);
the second test assembly (8) and the first test part (7) are connected in parallel on the large-diameter hydraulic pipeline (16) and the heat-preservation oil tank (31);
the second test part (8) comprises: -a second main oil pump (22), the pressure indicator (17), the temperature sensor (18), the pressure sensor (19), the relief valve (26), the flow meter (27) and the on-off valve (28);
the inlet of the second main oil pump (22) is connected with the large-diameter hydraulic pipeline (16), the outlet of the second main oil pump (22) is connected with the second oil inlet (25), and a safety valve (26), a flowmeter (27), a pressure indicator (17), a temperature sensor (18), a pressure sensor (19) and a switch valve (28) are sequentially arranged between the outlet of the second main oil pump (22) and the second oil inlet (25).
5. The system of claim 2, further comprising: an overflow aperture (30);
the overflow hole (30) is arranged at the side edge of the heat-insulating oil tank (31), a certain height is arranged at a distance from the bottom of the heat-insulating oil tank (31), and a corresponding relation exists between the height and the liquid level of the valve body (29) in the actual use process;
The overflow hole (30) is connected with an inlet of the oil tank (6) and is used for flowing back to the oil tank (6) through the overflow hole (30) after the oil liquid which is actively overflowed or leaked by the valve body (29) to be tested reaches the designated liquid level.
6. The system of claim 2, further comprising: a filter module (33);
the filter module (15) comprises: -the filter (15) with contaminant indication, a manual valve (20), the pressure indicator (17), the temperature sensor (18) and the pressure sensor (19);
-said filter with contaminant indication (15) is connected in parallel with said manual valve (20) on said small diameter hydraulic line (32);
the pressure indicator (17), the temperature sensor (18) and the pressure sensor (19) are sequentially arranged on the small-diameter hydraulic pipeline (32) where the filter (11) and the manual valve (20) are arranged;
the manual valve (20) is used for preventing the filter (15) with the pollutant indication from being blocked due to the fact that oil pollutants exceed standards.
7. The system according to claim 1, characterized in that said tank (6) comprises: -a filter (11), a circulating oil pump (12), the temperature sensor (18), the pressure sensor (19) and the safety valve (26);
The filter (11), the temperature sensor (18) and the pressure sensor (19) are arranged inside the oil tank (6), and the filter (11) is arranged at the outlet of the oil tank (6);
the filter (11) is connected with an inlet of the circulating oil pump (12), and an outlet of the circulating oil pump (12) is connected with the temperature control system (3);
the safety valve (26) is externally arranged between the outlet of the circulating oil pump (12) and the temperature control system (3);
the oil in the oil tank (6) is pumped into the small-diameter hydraulic pipeline (32) through the filter (11) by the circulating oil pump (12);
the filter (11) is used for filtering the oil in the oil tank (6);
the temperature sensor (18) is used for observing and collecting the temperature of the oil in the oil tank (6) in real time;
the pressure sensor (19) is used for observing and collecting the pressure of the oil in the oil tank (6) in real time;
the relief valve (26) is used for discharging oil outwards when the pressure of the oil in the small direct hydraulic pipeline (32) rises above a specified value.
8. The system according to claim 1, characterized in that the temperature control system (3) comprises: a refrigeration system (14) and a heating system (13);
An inlet of the heating system (13) is connected with an outlet of the circulating oil pump (12), an outlet of the heating system (13) is connected with an inlet of the refrigerating system (14), and an outlet of the refrigerating system (14) is connected with an inlet of the first main oil pump (21);
the heating system (13) is used for receiving a control instruction sent by the control system (2), and heating the oil in the hydraulic pipeline (5) based on the heating control instruction if the control instruction is a heating control instruction;
the refrigerating system (14) is used for receiving a control instruction sent by the control system (2), and heating the oil in the hydraulic pipeline (5) based on the refrigerating control instruction if the control instruction is the refrigerating control instruction.
9. The system according to claim 1, characterized in that the control system (2) comprises: an acquisition module (9) and a control module (10);
the input end of the acquisition module (9) is respectively connected with the oil tank (6), the hydraulic pipeline (5) and the hydraulic test system (4) in a signal manner, the output end of the acquisition module (9) is connected with the input end of the control module (10) in a signal manner, and the output end of the control module (10) is respectively connected with the heating system (13), the refrigerating system (14) and the hydraulic test system (4) in a signal manner;
The acquisition module (9) is used for acquiring test signal values of the hydraulic test system (4), the hydraulic pipeline (5) and the oil tank (6);
the control module (10) is used for generating a control instruction according to the test signal value, sending the control instruction to the temperature control system (3), and controlling the tested valve body (29) to realize different test functions according to test requirements.
10. An automatic transmission valve body testing method, characterized by being applied to the automatic transmission valve body testing system according to any one of claims 1 to 9, comprising:
pumping oil in an oil tank into a small-diameter hydraulic pipeline through a filter by a circulating oil pump, and heating or refrigerating the oil in the small-diameter hydraulic pipeline to a required temperature by a heating system or a refrigerating system to obtain regulated oil;
the regulated oil flows into a large-diameter hydraulic pipeline through a filtering module;
the first main oil pump enters the regulated oil in the large-diameter hydraulic pipeline into the measured valve body through a first oil inlet of the heat preservation oil tank, and
the second main oil pump enables the regulated oil in the large-diameter hydraulic pipeline to enter the tested valve body through a second oil inlet of the heat preservation oil tank, and the regulated oil in the tested valve body is tested;
The valve body to be tested receives a control instruction output by the control system;
the measured valve body actively overflows or passively leaks the regulated oil according to a control instruction;
when the oil liquid which is actively overflowed or passively leaked by the tested valve body reaches the specified liquid level, the oil liquid flows back to the oil tank through the small-diameter hydraulic pipeline through the overflow hole, and meanwhile, the oil return flow is observed and collected by the flow meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111277357.0A CN116067642A (en) | 2021-10-29 | 2021-10-29 | Automatic gearbox valve body testing system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111277357.0A CN116067642A (en) | 2021-10-29 | 2021-10-29 | Automatic gearbox valve body testing system and method |
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| CN116067642A true CN116067642A (en) | 2023-05-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117628009A (en) * | 2024-01-24 | 2024-03-01 | 秦皇岛职业技术学院 | System and method for testing comprehensive performance of thermosensitive overflow valve |
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2021
- 2021-10-29 CN CN202111277357.0A patent/CN116067642A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117628009A (en) * | 2024-01-24 | 2024-03-01 | 秦皇岛职业技术学院 | System and method for testing comprehensive performance of thermosensitive overflow valve |
| CN117628009B (en) * | 2024-01-24 | 2024-03-26 | 秦皇岛职业技术学院 | System and method for testing comprehensive performance of thermosensitive overflow valve |
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