CN103759938B - High temperature testing machine for gears - Google Patents
High temperature testing machine for gears Download PDFInfo
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- CN103759938B CN103759938B CN201410012792.4A CN201410012792A CN103759938B CN 103759938 B CN103759938 B CN 103759938B CN 201410012792 A CN201410012792 A CN 201410012792A CN 103759938 B CN103759938 B CN 103759938B
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Abstract
A high temperature testing machine for gears comprises a gear transmission case used for testing the fatigue life of the gears, wherein the gears to be tested are installed in the gear transmission case, the gear transmission case is connected with a temperature control system, the temperature control system comprises a heating device and a control module of a temperature monitor device, the heating device is connected with the gear transmission case through a pipeline, the heating device conveys lubricating oil into the gear transmission case through the pipeline to heat and lubricate the gears to be tested in an oil bath mode so that the working condition of gears inside an aviation speed reducer can be simulated, and the lubricating oil is heated to reach the set temperature. The temperature monitor device is installed on the heating device to monitor the temperature of the lubricating oil in real time, temperature information is fed back to the control module, and then the heating temperature can be monitored and controlled. Long-time simulation testing under the high temperature can be carried out on the gears, the testing temperature is high, working time is long, the testing environment is more approximate to the actual working condition of the aviation gears, and testing results are more effective and credible.
Description
Technical field
The present invention relates to a kind of testing equipment for simulating Aeronautical Gears worst hot case, particularly a kind of can the high temperature gear testing machine of accurate Control experiment temperature.
Background technology
Aviation reducer gear is a kind of vital part be operated in complex environment.Temperature has directly or remote effect, as the fatigue behaviour, red hardness, friction and wear behavior etc. of material the multiple mechanics of gear and mechanical property.Along with aircraft engine performance improves constantly, engine thrust-weight ratio constantly increases, and the working condition of aeromotor reducer gear is also more and more harsher, and gears meshing surface temperature is the highest has reached 623K, therefore, also improves the requirement of gear heat resistance thereupon.
Gear actual temperature is formed by body temperature and the instantaneous temperature superimposition that flashes.The factor affecting gear temperature mainly contains: input heat of friction, convection transfer rate, environment temperature, input hot-fluid are along working flank distribution situation, friction factor etc.The instantaneous temperature of flashing of gear surface refers to that gear in the running, the transient change temperature that surface produces.Meanwhile, Aeronautical Gears can produce amount of heat and form uneven temperature field in operation process, and its thermo parameters method situation has material impact to gear train transmission efficiency, dynamic property and load-bearing capacity etc.Engineering practice shows, it is particularly evident that above-mentioned situation shows in heavily loaded engaged gear.The thermal deformation that heavy-duty gear Yin Gaowen and uneven temperature place are caused will have a strong impact on its load-bearing capacity and serviceability, aggravate the vibration & noise that it produces, shorten its serviceable life.
Because the above-mentioned influence factor to gear actual temperature is not considered wherein by existing gear testing machine design, thus existing gear testing machine only can meet the examination of the low temperature gears such as gear of vehicle.If for examining the high temperature gears such as Aeronautical Gears, error is comparatively large, and the data obtained is difficult to revise.Therefore examine gear in aviation speed reduction unit actual condition the most succinctly, intuitively method gear is placed in carries out running-in with actual condition phase near-ambient exactly.For realizing this goal, need to create the experimental enviroment close as far as possible with true environment in gear simulation test machine.
Existing FZG testing machine simply can control temperature.Its principle is the two pairs of gears having speed ratio identical, and wherein a pair is test gear, and another is to for accompanying examination gear.Accompany examination gear to be arranged in a gear case, its input shaft and motor straight connect in succession, and it exports and tests gear case and be connected, and tests on gearbox output shaft and is provided with loading clutch, apply lubricating oil during test from jet above casing to gear.Be designed with electric heater in fuel tank, in order to control initial oil temperature, also have refrigeratory simultaneously, in order to realize oil temperature balance in test.But the attainable heating-up temperature of FZG Gear Experimentation case heating arrangement is low, and temperature departure is comparatively large, can only by Oil-temperature control in 90 (± 5) DEG C.Therefore FZG gear testing machine test condition far can not reach the needs of simulation aviation speed reduction unit internal temperature, cannot simulate true environment in aviation speed reduction unit.
From type of heating, the heating arrangement of existing gear testing machine mostly is Resistant heating.But resistance wire in use exposes some defects that can not be ignored.One, resistance wire are short for serviceable life, if blow, need integral replacing, operation inconvenience.If resistance wire blows in process of the test, test failure can be caused.Two, Resistant heating lack of homogeneity, the lubricating oil temperature of close resistance wire part, far above other parts in fuel tank and easily higher than flash temperature, if chance resistance wire is exposed charged, then may light lubricating oil, causes security incident.Three, the lubricating oil burning of Resistant heating is insufficient, and carbon deposition rate is high.High carbon deposition rate not only can affect the parameters such as test temperature, also can affect the greasy property of lubricating oil, finally affect test effect.In addition, it is slow that this type of heating also also exists temperature-responsive, and the heat time is short, can not provide the problems such as long worst hot case condition.
The more important thing is, in aviation speed reduction unit, its working temperature of gear of different parts application also has difference.Existing gear testing machine adopts the object of Resistant heating fuel tank to be guarantee that lubricating oil normally works, do not consider gear operation actual conditions, so gear testing machine can only detect single temperature range annular wheel operating mode, can not realize testing the temperature difference alienation of different parts gear.
Existing gear testing machine is owing to effectively can not simulate the actual working conditions of aviation speed reduction unit annular wheel, and test gear operating mode differs comparatively large with actual condition, Gu the error of this test figure is larger.
Summary of the invention
Technical matters to be solved by this invention be to provide a kind of can the gear testing machine of Control experiment temperature, with solve working condition that existing gear testing machine provides and gear actual working conditions gap excessive, cause the problem that the data error of measurement is large.
To achieve these goals, the invention provides a kind of high temperature gear testing machine, comprise the gear for Gear Experimentation test, gear under test is arranged in described gear, wherein, described gear is connected with temperature control system, described temperature control system comprises heating arrangement and device for detecting temperature control module, described heating arrangement is connected with gear by pipeline, lubricating oil after heating is carried out oil-bath type heating and lubrication to simulate aviation reducer gear operating mode in described gear to described gear under test by described Pipe transfer by described heating arrangement, described device for detecting temperature is arranged on the temperature of lubricating oil described in Real-Time Monitoring on described heating arrangement to control the heating-up temperature of described heating arrangement.
Above-mentioned gear testing machine, wherein, described heating arrangement comprises heating compartment, fuel sucking pipe, oil pump and many group PTC heating plate groups, described heating compartment is provided with oil filler, oil-out and oil return opening, described oil pump is arranged on above described oil-out, described fuel sucking pipe is arranged in described heating compartment and is also connected with described oil pump through described oil-out, described oil pump is connected with described gear by described pipeline, described gear is connected with described oil return opening by pipeline, described many group PTC heating plate groups are arranged on described heating compartment inwall respectively, at the bottom of case and on case internal partition.
Above-mentioned gear testing machine, wherein, described temperature control system also comprises cooling device, described cooling device is connected with described heating arrangement by cooling line, described cooling line is provided with cooling unit for controlling flow of lubrication and cooling oil box refrigerating capacity in described cooling line to control and to regulate lubricating oil temperature.
Above-mentioned gear testing machine, wherein, described device for detecting temperature comprises multiple fuel tank temperature sensor, and described multiple fuel tank temperature sensor is arranged in described heating compartment, for temperature data in heating compartment described in Real-time Collection, and correspond respectively to the setting of described many group PTC heating plate groups.
Above-mentioned gear testing machine, wherein, described device for detecting temperature also comprises gearbox temperature sensor, and described gearbox temperature sensor is arranged on the top of described gear with the temperature data in gear described in Real-time Collection.
Above-mentioned gear testing machine, wherein, described temperature control system also comprises control module, described multiple fuel tank temperature sensor and described many group PTC heating plate groups are connected with described control module respectively, each described fuel tank temperature sensor is PTC heating plate group described in corresponding a group respectively, described fuel tank temperature sensor gathers the temperature data of described PTC heating plate respectively and is uploaded to described control module, described control module controls the group heating of described many group PTC heating plates respectively according to described temperature data or disconnects, accurately to control the temperature of lubricating oil.
Above-mentioned gear testing machine, wherein, described gearbox temperature sensor is connected with described control module, described gearbox temperature sensor gathers the gear temperature data of described gear and is uploaded to described control module, described control module controls the group heating of described many group PTC heating plates respectively according to described temperature data and described gear temperature data or disconnects, accurately to control the temperature of lubricating oil.
Above-mentioned gear testing machine, wherein, described gearbox temperature sensor setting one protects temperature control modules.When the gear temperature data in gear are higher than described protection temperature, described control module close whole described many group PTC heating plate groups and controlled cooling model fuel tank refrigerating capacity the cool cycles accelerating lubricating oil to reduce lubricating oil temperature.
Above-mentioned gear testing machine, wherein, described multiple fuel tank temperature sensor arranges the temperature control upper limit and temperature control lower limit respectively, the temperature data recorded when described fuel tank temperature sensor is prescribed a time limit higher than on described temperature control, described control module closes corresponding described PTC heating plate group, the temperature data recorded when described fuel tank temperature sensor lower than described temperature control under in limited time, described control module opens corresponding PTC heating plate group.
Technique effect of the present invention is:
1) the present invention's mode of adopting PTC to heat, ptc material is a kind of thermal resistance material, and itself has the fast feature of temperature-sensitive, noiseless, long service life, firing rate.The present invention adopts PTC type of heating.In test, if a certain PTC heating plate fault, other heating plate of this region can carry out temperature compensation.The heating plate changing fault is only needed when safeguarding, easy to operate.PTC type of heating also has a large advantage in addition, if meet PTC heating plate to can not get abundant heat radiation, and after temperature arrival Curie temperature, power can sharply decline, about now the surface temperature of heating plate maintains its Curie temperature, the lubricating oil burning near heating plate can not be caused, alleviate lubricating oil carbon distribution problem common when using Resistant heating, warranty test machine can normally run for a long time, and therefore gear testing machine safety coefficient of the present invention is high, easy to maintenance.Can heat for a long time gear, test temperature is high, and test period is long, and closer to the real operating environments of Aeronautical Gears, test findings is more credible;
2) PTC heating plate controllable temperature is interval large, can carry out the test of differentiation to the gear of different parts.In actual applications, the working temperature of different parts gear is not identical, therefore requires not identical for gear yet.Gear temperature can be set in arbitrary temp (± 1 DEG C) under PTC heating plate Curie temperature by temperature control system by middle gear testing machine of the present invention, thus realizes the simulation that gear works under real operating environments;
3) owing to this invention takes the method for PTC antenna array control, ptc material itself has stable performance, heats up rapidly, affects the characteristics such as little by mains fluctuations, and its well heater made, there is the remarkable advantages such as thermal resistance is little, heat exchange efficiency is high.So the method response of PTC array applicator is fast, precision is high, online temperature scaling factor can be formed, therefore temperature-controlling system temperature-controlled precision of the present invention is high, temperature control precision and homogeneity are increased substantially, oil temperature distributing homogeneity improves more than 30% than existing equipment, and the control accuracy of temperature can reach ± and about 1 DEG C, the fixing quantity of lubricating oil temperature can be realized;
4) the present invention is by testability test in early stage, relation between gear temperature and lubricating oil temperature is measured, draws corresponding experimental formula and after inputting computing machine, controlled by computer, realize the automatic control to gear surface temperature, thus increase work efficiency.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Accompanying drawing explanation
Fig. 1 is the gear testing machine structural representation of one embodiment of the invention;
Fig. 2 is the gear testing machine structural representation of another embodiment of the present invention;
Fig. 3 is that the temperature of one embodiment of the invention controls schematic diagram;
Fig. 4 is that in the heating compartment of one embodiment of the invention, PTC heating plate group arranges schematic diagram (end face);
Fig. 5 is that in the heating compartment of one embodiment of the invention, PTC heating plate group arranges schematic diagram (side);
Fig. 6 is that in the heating compartment of another embodiment of the present invention, PTC heating plate group arranges schematic diagram (side).
Wherein, Reference numeral
1 gear
2 gear under test
3 temperature control systems
31 heating arrangements
311 heating compartment
312 fuel sucking pipes
313 heating oil pumps
314 PTC heating plate groups
315 oil fillers
316 oil-outs
317 oil return openings
32 device for detecting temperature
321 fuel tank temperature sensors
322 gearbox temperature sensors
33 pipelines
34 cooling devices
341 cooling lines
35 control modules
A, B, C, D heating plate group pattern
Embodiment
Below in conjunction with accompanying drawing, structural principle of the present invention and principle of work are described in detail:
See the gear testing machine structural representation that Fig. 1, Fig. 1 are one embodiment of the invention.Gear testing machine of the present invention, comprise the gear 1 for Gear Experimentation test, gear under test 2 is arranged in described gear 1, described gear 1 is connected with temperature control system 3, described temperature control system 3 comprises heating arrangement 31 and device for detecting temperature 32, described heating arrangement 31 is connected with gear 1 by pipeline 33, lubricating oil after heating can be transferred in described gear 1 by described pipeline 33 and carries out oil-bath type heating to described gear under test 2 and lubricate with the working environment of simulating aviation speed reduction unit annular wheel by described heating arrangement 31, described device for detecting temperature 32 is arranged on the temperature of lubricating oil described in Real-Time Monitoring on described heating arrangement 31 to control the heating-up temperature of described heating arrangement 31.Said temperature is preferably 260 DEG C-280 DEG C, temperature error scope 1 DEG C.
In the present embodiment, described heating arrangement 31 comprises heating compartment 311, fuel sucking pipe 312, heating oil pump 313 and many group PTC heating plate groups 314, described PTC heating plate group 314 comprises multiple PTC heating plate respectively, described heating compartment 311 is provided with oil filler 315, oil-out 316 and oil return opening 317, described heating oil pump 313 is arranged on above described oil-out 316, described fuel sucking pipe 312 is arranged in described heating compartment 311 and is also connected with described heating oil pump 313 through described oil-out 316, described heating oil pump 313 is connected with described gear 1 by described pipeline 33, described gear 1 is connected with described oil return opening 317 by pipeline 33, described many group PTC heating plate groups 314 are arranged on described heating compartment 311 inwall respectively.
See the gear testing machine structural representation that Fig. 2, Fig. 2 are another embodiment of the present invention.In another embodiment of the present invention, described temperature control system 3 also can comprise cooling device 34, described cooling device 34 is connected with described heating arrangement 31 by cooling line 341, described cooling line 341 is provided with and controls the flow of lubricating oil and the cooling device of refrigerating capacity in described cooling line 341, in order to the temperature of regulating and controlling lubricating oil.During test, if when lubricating oil temperature is between the setting temperature control upper limit (T1) and setting temperature control lower limit (To), closed portion PTC heating plate group 314, makes oil temperature stablize; If oil temperature exceedes arrange the temperature control upper limit (T1), then again close the PTC heating plate group 314 of some, reduce further and add heat, object makes oil temperature slowly be lowered into design temperature scope; If lubricating oil temperature exceedes the setting temperature control upper limit 20 DEG C or (chooses numerical value junior in both with the difference of lubricating oil flash point temperature less than 10 DEG C, guarantee experimental safe) time, then close all PTC heating plate groups 314 and open cooling device 34, and regulating cooling oil box refrigerating capacity and flow of lubrication in cooling device 34 according to the actual temperature of lubricating oil.
The temperature being one embodiment of the invention see Fig. 3, Fig. 3 controls schematic diagram.In the present embodiment, described device for detecting temperature 32 comprises multiple fuel tank temperature sensor 321, described multiple fuel tank temperature sensor 321 organizes that PTC heating plate group 314 is corresponding to be arranged in described heating compartment 311, with the temperature data in heating compartment described in Real-time Collection 311 with described respectively.In another embodiment, described device for detecting temperature 32 also can comprise gearbox temperature sensor 322, and described gearbox temperature sensor 322 is arranged on the top of described gear 1 with the temperature data in gear described in Real-time Collection 1.Because considering that lubricating oil is between oil circuit transmission period, temperature has certain decline, therefore need add corresponding temperature compensation value on the basis that the flank of tooth requires temperature, to improve test accuracy rate when setting heating-up temperature.Using the working gear environment temperature of test gear case jet temperature as test simulation, therefore, definition temperature compensation value is the difference of the jet oil temperature of average oil temperature and gear 1 in heating compartment 311.So:
Heating compartment setting heating-up temperature=gear jet oil temperature+temperature compensation value
Described temperature control system 3 also comprises control module 35, described multiple fuel tank temperature sensor 321, described many group PTC heating plate groups 314 and described cooling unit 34 are all connected with described control module 35, the equal correspondence of PTC heating plate of each described many group PTC heating plate groups 314 arranges described fuel tank temperature sensor 321, described fuel tank temperature sensor 321 gathers the temperature data of described PTC heating plate respectively and is uploaded to described control module 35, described control module 35 controls described cooling oil box refrigerating capacity according to described temperature data and/or controls described many group PTC heating plate groups 314 heat or disconnect respectively, accurately to control the temperature of lubricating oil.Wherein, described gearbox temperature sensor 322 is connected with described control module 35, described gearbox temperature sensor 322 gathers the gear temperature data of described gear 1 and is uploaded to described control module 35, described control module 35 controls described cooling oil box refrigerating capacity according to described temperature data and described gear temperature data and/or controls described many group PTC heating plate groups 314 heat or disconnect, accurately to control the temperature of lubricating oil respectively.Wherein, described gearbox temperature sensor 322 arranges a protection temperature control modules; when the gear temperature data in gear 1 are higher than described protection temperature, many group PTC heating plate groups 314 described in described control module 35 closed portion and/or control described cooling oil box refrigerating capacity and the cool cycles accelerating lubricating oil to reduce lubricating oil temperature.
Described multiple fuel tank temperature sensor 321 arranges the temperature control upper limit and temperature control lower limit respectively, the temperature data recorded when described fuel tank temperature sensor 321 is prescribed a time limit higher than on described temperature control, described control module 35 is closed corresponding described PTC heating plate group 314 and/or is controlled the cool cycles that described cooling oil box accelerates lubricating oil, the temperature data recorded when described fuel tank temperature sensor 321 lower than described temperature control under in limited time, described control module 35 opens corresponding PTC heating plate group 314.
During work, tested by testability in early stage, the relation between the temperature of gear, lubricating oil temperature is measured, draws corresponding formula, in input computing machine, realize the automatic control to gear surface temperature.Directly over heating compartment 311, open an oil filler 315, connect pipeline road, by heating oil pump 313, the lubricating oil after heating is pumped in gear 1, oil-bath type heating and lubrication are carried out to gear under test 2.
Lubricating oil is derived from heating compartment 311 by heating oil pump 313, and be connected in an oil cooling unit, the model of this oil cooling unit is preferably MCO-385-01K, then is led back in heating compartment 311 by an oil pump.Oil cooling unit cooling oil pump used is regulating power, can the flow of oil and refrigerating capacity thus realize the temperature controlling lubricating oil in controlled cooling model device 34.
Outer apply oil is stored in an external fuel tank, carries out oil circulation by heating oil pump 313.Lubricating oil, by being located at many places PTC heating plate group 314 array of heating compartment 311 inside surface, heats lubricating oil in heating compartment 311.PTC heating plate group 314 array is the highest lubricating oil temperature in heating compartment 311 can be heated to 280 DEG C for it.
In one embodiment, each PTC array correspondence can arrange a control module, then each control module is transferred to the data gathered control module 35 and analyzes, gear testing machine control program is analyzed, control module 35 adds heat according to analysis result adjustment PTC heating plate group, thus realizes making the temperature of lubricating oil to control in a smaller accuracy rating.
Its device for detecting temperature 32 is arranged in heating compartment 311, by being distributed in heating compartment 311 multiple spot probe everywhere and the fuel tank temperature sensor 321 on gear 2 top, carries out signals collecting.Signal carries out closed loop Based Intelligent Control to device for detecting temperature 32, heating arrangement 31 and cooling device 34 after machine analyzing and processing as calculated, forms online temperature scaling factor.Before the test for the gearbox temperature sensor 322 of gear 1 arranges a protection temperature control modules; when the temperature that the gearbox temperature sensor 322 in gear 1 monitors gear under test 2 is higher than its protection temperature; control module 35 controlled cooling model fuel tank strengthens refrigerating capacity; thus accelerate the cool cycles of lubricating oil, reduce lubricating oil temperature.In heating compartment 311 inner many places, fuel tank temperature sensor 321 is set, for each fuel tank temperature sensor 321 arranges the temperature control upper limit and temperature control lower limit, the lubricating oil temperature recorded when fuel tank temperature sensor 321 is prescribed a time limit higher than on temperature control, control module 35 closes corresponding PTC heating plate group 314 array, the lubricating oil temperature recorded when fuel tank temperature sensor 321 is lower than temperature control lower limit, and control module 35 opens corresponding PTC heating electrodes.
During test, open gear 1, test gear under test 2 is tried gear and is arranged on gearing shaft with accompanying.Open heating arrangement 31, the lubricating oil in heating compartment 311 is heated, after lubricating oil temperature is stablized in casing 311 to be heated, open cooling device 34, the temperature of lubricating oil is regulated.When lubricating oil temperature is stabilized within the scope of temperature control; start Gear Experimentation; and gear temperature is monitored; control module is when the temperature that the gearbox temperature sensor 322 in gear 1 monitors gear under test 2 is higher than protection temperature; gearbox temperature sensor 322 sends signal; control module 35 improves cooling oil box refrigerating capacity and accelerates the cool cycles of lubricating oil, reduces lubricating oil temperature.
Test process the following detailed description of a gear under test 2:
In the present embodiment, gear under test 2 is an involute spur gear, and its number of teeth is 29, and normal direction modulus is 3.63, and helix angle is 6o2 ' 51 〞, and the hand of spiral is left-handed.This gear lubricating oil used is that aerooil is synthesized on Great Wall 4010, and the flash temperature of this lubricating oil is 264 DEG C.The working gear temperature of test is about 230 DEG C.Heating compartment 311 bed-plate dimension is 400mm*300mm; PTC heating plate is of a size of 100mm*60mm.
See Fig. 4-6, Fig. 4 is that in the heating compartment of one embodiment of the invention, PTC heating plate group arranges schematic diagram (end face), Fig. 5 is that in the heating compartment of one embodiment of the invention, PTC heating plate group arranges schematic diagram (side), and Fig. 6 is that in the heating compartment of another embodiment of the present invention, PTC heating plate group arranges schematic diagram (side).Be the arrangement mode of PTC heating plate in Fig. 4, heating compartment 311 is divided into A, B, C, D tetra-arrays, each array is provided with corresponding fuel tank temperature sensor 321 and is controlled by control module 35.
In first array A, PTC heating plate temperature regulation mechanism is as follows:
When the required heat that adds is can add heat 100%, then open all PTC heating plates;
When the required heat that adds is can add heat 50%, then interval open corresponding PTC heating plate;
When the required heat that adds is can add heat 30%, then open 5 PTC heating plates of bottom;
When the heat that adds of required minimizing is 30%, then close 5 PTC heating plates of bottom;
When the heat that adds of required minimizing is 50%, then the corresponding PTC heating plate of the closedown at interval;
When the heat that adds of required minimizing is 100%, then close all PTC heating plates.
In second array B, PTC heating plate temperature regulation mechanism is as follows:
When the required heat that adds is can add heat 100%, then open all PTC heating plates;
When the required heat that adds is can add heat 50%, then interval open corresponding PTC heating plate;
When the required heat that adds is can add heat 30%, then open 2 non-conterminous PTC heating plates;
When the heat that adds of required minimizing is 30%, then close 2 non-conterminous PTC heating plates;
When the heat that adds of required minimizing is 50%, then the corresponding PTC heating plate of the closedown at interval;
When the heat that adds of required minimizing is 100%, then close all PTC heating plates.
In 3rd array C, PTC heating plate temperature regulation mechanism is as follows:
When the required heat that adds is can add heat 100%, then open all PTC heating plates;
When the required heat that adds is can add heat 50%, then interval open corresponding PTC heating plate;
When the required heat that adds is can add heat 30%, then open 2 non-conterminous PTC heating plates;
When the heat that adds of required minimizing is 30%, then close 2 non-conterminous PTC heating plates;
When the heat that adds of required minimizing is 50%, then the corresponding PTC heating plate of the closedown at interval;
When the heat that adds of required minimizing is 100%, then close all PTC heating plates.
In 4th array D, PTC heating plate temperature regulation mechanism is as follows:
When the required heat that adds is can add heat 100%, then open all PTC heating plates;
When the required heat that adds is can add heat 50%, then interval open corresponding PTC heating plate;
When the required heat that adds is can add heat 30%, then open 3 non-conterminous PTC heating plates;
When the heat that adds of required minimizing is 30%, then close 3 non-conterminous PTC heating plates;
When the heat that adds of required minimizing is 50%, then the corresponding PTC heating plate of the closedown at interval;
When the heat that adds of required minimizing is 100%, then close all PTC heating plates.
Visible, the present invention can sooner, the temperature of Control experiment case more sensitively and accurately.
Wherein, PTC arrangement mode can be changed according to its size difference.
Wherein, concrete operating process is:
1) open computing machine, be the Lubricating oil tank setting heated for controlling temperature upper limit (T1) and temperature control lower limit (To) by control module 35, in the present embodiment, such as the temperature control upper limit is preferably 235 DEG C; Temperature control lower limit is 225 DEG C;
2) send heating instructions to heating plate array by control module 35, open heating plate and the lubricating oil in heating compartment 311 is heated;
3) open gearbox temperature sensor 322 by control module 35, the flank of tooth temperature information measured by it is back to control module 35 by gearbox temperature sensor 322;
4) analyzed by control module 35 and judge the signal that gearbox temperature sensor 322 returns, what the gap size between the temperature obtained according to actual measurement and setting value regulated heating plate in heating plate array with reference to abovementioned steps enables quantity.If lubricating oil temperature exceedes the setting temperature control upper limit 20 DEG C or with the difference of lubricating oil flash point temperature less than 10 DEG C (choose numerical value junior in both, guarantee experimental safe) time, then close all heating plates.Meanwhile, open cooling device 34 and set cooling oil box refrigerating capacity in cooling system according to the actual temperature of lubricating oil;
5) be down within the scope of the temperature bound of setting if record oil temperature, then closed cooling device 34, reopen corresponding heating plate equilibrium temperature;
6) prescribe a time limit lower than under setting temperature control if record oil temperature, open appropriate heating plate according to actual measurement temperature and the temperature difference size of setting temperature control lower limit temperature.
Certainly; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the present invention.
Claims (6)
1. a high temperature gear testing machine, comprise the gear for Gear Experimentation test, gear under test is arranged in described gear, it is characterized in that, described gear is connected with temperature control system, described temperature control system comprises heating arrangement and device for detecting temperature, described heating arrangement is connected with gear by pipeline, lubricating oil after heating is carried out oil-bath type heating and lubrication with the operating mode of simulating aviation speed reduction unit annular wheel in described gear to described gear under test by described Pipe transfer by described heating arrangement, described device for detecting temperature is arranged on the temperature of lubricating oil described in Real-Time Monitoring on described heating arrangement to control the heating-up temperature of described heating arrangement,
Described heating arrangement comprises heating compartment and many group PTC heating plate groups, and described PTC heating plate group comprises multiple PTC heating plate respectively, and described many group PTC heating plate groups are arranged at the bottom of the inwall of described heating compartment, case and on case internal partition respectively;
Described device for detecting temperature comprises multiple fuel tank temperature sensor, and described multiple fuel tank temperature sensor corresponds respectively to described many group PTC heating plate groups and is arranged in described heating compartment with the temperature data in heating compartment described in Real-time Collection;
Described temperature control system also comprises cooling device, described cooling device is connected with described heating arrangement by cooling line, described cooling line is provided with cooling unit for controlling flow of lubrication in described cooling line and cooling oil box refrigerating capacity with the temperature of regulating and controlling lubricating oil;
Described temperature control system also comprises control module, described multiple fuel tank temperature sensor, described many group PTC heating plate groups and described cooler group are connected with described control module respectively, the PTC heating plate of each described many group PTC heating plate groups respectively correspondence arranges described fuel tank temperature sensor, described fuel tank temperature sensor gathers the temperature data of described PTC heating plate respectively and is uploaded to described control module, described control module controls described cooling oil box refrigerating capacity respectively according to described temperature data and/or controls the group heating of described many group PTC heating plates or disconnect, accurately to control the temperature of lubricating oil.
2. gear testing machine according to claim 1, it is characterized in that, described heating arrangement also comprises fuel sucking pipe and heating oil pump, described heating compartment is provided with oil filler, oil-out and oil return opening, described heating oil pump is arranged on above described oil-out, described fuel sucking pipe is arranged in described heating compartment and is also connected with described heating oil pump through described oil-out, described heating oil pump is connected with described gear by described pipeline, and described gear is connected with described oil return opening by pipeline.
3. gear testing machine according to claim 1 and 2, it is characterized in that, described device for detecting temperature also comprises gearbox temperature sensor, and described gearbox temperature sensor is arranged on the top of described gear with the temperature data in gear described in Real-time Collection.
4. gear testing machine according to claim 3, it is characterized in that, described gearbox temperature sensor is connected with described control module, described gearbox temperature sensor gathers the gear temperature data of described gear and is uploaded to described control module, described control module controls described cooling oil box refrigerating capacity respectively according to described temperature data and described gear temperature data and/or controls the group heating of described many group PTC heating plates or disconnect, accurately to control the temperature of lubricating oil.
5. gear testing machine according to claim 4; it is characterized in that; described gearbox temperature sensor setting one protects temperature control modules; when the gear temperature data in gear are higher than described protection temperature, many group PTC heating plate groups described in described control module closed portion and/or control described cooling oil box refrigerating capacity and described flow of lubrication to reduce lubricating oil temperature.
6. gear testing machine according to claim 5, it is characterized in that, described multiple fuel tank temperature sensor arranges a temperature control upper limit and a temperature control lower limit respectively, the temperature data recorded when described fuel tank temperature sensor is prescribed a time limit higher than on described temperature control, described control module is closed corresponding described PTC heating plate group and/or is controlled described cooling oil box refrigerating capacity and described flow of lubrication to reduce lubricating oil temperature, the temperature data recorded when described fuel tank temperature sensor lower than described temperature control under in limited time, described control module opens corresponding PTC heating plate group to improve lubricating oil temperature.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410012792.4A CN103759938B (en) | 2014-01-10 | 2014-01-10 | High temperature testing machine for gears |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410012792.4A CN103759938B (en) | 2014-01-10 | 2014-01-10 | High temperature testing machine for gears |
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| CN103759938A CN103759938A (en) | 2014-04-30 |
| CN103759938B true CN103759938B (en) | 2015-02-25 |
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| CN201410012792.4A Expired - Fee Related CN103759938B (en) | 2014-01-10 | 2014-01-10 | High temperature testing machine for gears |
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| CN104502121B (en) * | 2014-12-26 | 2018-04-27 | 重庆长安汽车股份有限公司 | Dynamic coupling system performance test apparatus |
| CN106970105B (en) * | 2017-04-01 | 2019-12-20 | 西安交通大学 | Heat source layout variable structure heat conduction performance test platform and test method thereof |
| CN107179789A (en) * | 2017-06-26 | 2017-09-19 | 河北百强医用设备制造有限公司 | A kind of heating control apparatus and its method for heating and controlling of uniform temperature gradient |
| CN109115489A (en) * | 2018-08-02 | 2019-01-01 | 清华大学 | gear fatigue test device water cooling system |
| CN109445494B (en) * | 2018-10-10 | 2020-04-28 | 珠海格力电器股份有限公司 | Enthalpy difference laboratory dry-bulb working condition automatic control method |
| CN109668727B (en) * | 2019-01-14 | 2023-07-18 | 扬州大学 | Fatigue test device and method for vibration reduction gear of automobile engine |
| CN109470476B (en) * | 2019-01-14 | 2023-06-27 | 扬州大学 | Torsional fatigue test device and method for vibration reduction gear |
| CN110186671A (en) * | 2019-05-17 | 2019-08-30 | 西北工业大学 | A kind of heat transfer of gear and thermometric testing stand |
| CN110686070A (en) * | 2019-11-13 | 2020-01-14 | 济南大学 | Test bed gear box capable of automatically adjusting lubricating conditions and adjusting method thereof |
| CN112178160A (en) * | 2020-08-21 | 2021-01-05 | 河北工业大学 | Device for measuring influence of lubricating mode and lubricating oil on power of transmission gear |
| CN112557025B (en) * | 2020-12-07 | 2022-09-13 | 上海交通大学 | Planetary gear test bench for simulating multi-working-condition environment and working method |
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| DE4328537C2 (en) * | 1993-08-25 | 2000-03-30 | Univ Stuttgart | Transmission test bench and method for testing a transmission |
| CN201637570U (en) * | 2010-04-02 | 2010-11-17 | 广州市花都全球自动变速箱有限公司 | Self-changing gearbox assembly test machine with constant-temperature device |
| CN101886978B (en) * | 2010-07-07 | 2011-10-05 | 四川大学 | Vacuum high/low temperature environmental simulation electromechanical transmission mechanism comprehensive performance experimental system |
| CN201731992U (en) * | 2010-08-03 | 2011-02-02 | 无锡威锐科智能测控技术有限公司 | Dedicated hydraulic oil tank for testing performance of CVT valve body |
| CN102042904B (en) * | 2010-11-18 | 2012-04-04 | 芜湖聚达汽车零部件有限公司 | High-temperature test system and method of clutch slave cylinder |
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