CN107167317B - Sliding bearing experimental platform and method - Google Patents
Sliding bearing experimental platform and method Download PDFInfo
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- CN107167317B CN107167317B CN201710428874.0A CN201710428874A CN107167317B CN 107167317 B CN107167317 B CN 107167317B CN 201710428874 A CN201710428874 A CN 201710428874A CN 107167317 B CN107167317 B CN 107167317B
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The present invention provides a kind of sliding bearing experimental platforms, including epicyclic gearbox (5)；The epicyclic gearbox (5) includes planet pinion shaft (15), planet carrier (17), planetary gear (14), sliding bearing installation space；Sliding bearing installation space is located between planet pinion shaft (15) and planetary gear (14)；In sliding bearing installation space after installation sliding bearing (13), sliding bearing (13) is secondary with the side wall of planet carrier (17), planet pinion shaft (15) composition friction respectively.The invention also includes a kind of sliding bear experiment methods.Sliding bearing (13) is packed into epicyclic gearbox (5) inner planet gear (14) inner hole by way of extruding or cold charge by the present invention, bush(ing) bearing (1301) and planet pinion shaft (15) composition friction pair do relative rotary motion, and axial thrust bearing (1302) and planet carrier inner side end form friction pair and do relative rotary motion.
Description
Technical field
The present invention relates to a kind of bearing test-beds, and in particular, to a kind of sliding bearing experimental platform and method, more particularly to
A kind of low-speed heave-load Herringbone-tooth planet gearbox sliding bearing experimental platform and method.
Background technique
Epicyclic gearbox is increasingly obtained due to that can realize powerful transmission in the case where smaller size and lighter weight
It must be widely applied.Compared with rolling bearing, the advantages that the small size of sliding bearing, high bearing capacity, long-life, so that planet
Gear box structure is more compact, and transmitting is more powerful, and performance is relatively reliable.Sliding bearing has become low-speed heave-load type row at present
The core content of star gear-box research.A kind of low-speed heave-load Herringbone-tooth planet gearbox sliding bearing experimental platform of the present invention can be
Under the operating condition of unloaded, load, overload and frequent start-stop, the installed bush(ing) bearing of inner hole of planetary gear and axial thrust are examined
The lubrication and friction and wear behavior of bearing determine ultimate load, and carry out function to the sliding bearing of different structure and different materials
Comparative test is consumed, the sliding bearing structure and material generated compared with less friction is obtained.Due to gear tooth each in epicyclic gearbox
Using double helical tooth, double helical tooth itself can offset the axial force during each gear engaged transmission, be solely subjected to axial thrust bearing
Due to power relatively small axial caused by processing and installation error is in transmission process, abrasion is smaller, so the present invention is mainly with radial direction
Sliding bearing bearing parameter is as test input parametric test bush(ing) bearing and axial thrust bearing.Low speed weight in the present invention
Carry Herringbone-tooth planet gearbox in normal working conditions, the ratio that the installed bush(ing) bearing of inner hole of planetary gear is born presses model
It encloses for 8~20MPa, linear velocity range is 0.4~1.2m/s.
Currently, being directed to the testing machine of the installed sliding bearing of low-speed heave-load Herringbone-tooth planet gearbox inner planet gear inner hole
Mostly based on sliding bearing universal testing-machine, sliding bearing is not packed into Herringbone-tooth planet gearbox and is examined, it cannot
The loading method and working condition of real simulation Herringbone-tooth planet gearbox sliding bearing cannot be sliding bearing in low speed weight
It carries the application in Herringbone-tooth planet gearbox and more true test support is provided, become low-speed heave-load Herringbone-tooth planet gearbox use
The major obstacle of sliding bearing exploitation.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of sliding bearing experimental platform and methods.
The present invention provides a kind of sliding bearing experimental platforms, including epicyclic gearbox；
The epicyclic gearbox includes planet pinion shaft, planet carrier, planetary gear, sliding bearing installation space；
Sliding bearing installation space is between planet pinion shaft and planetary gear；
In sliding bearing installation space after installation sliding bearing, sliding bearing respectively with planet pinion shaft, planet carrier group
It is secondary at friction.
Preferably, the planet pinion shaft has blind hole, radial hole；
The blind hole is along the central axial center that the planet pinion shaft is arranged in of the planet pinion shaft；
The radial hole is radially arranged in the middle part of the planet pinion shaft along the planet pinion shaft；
Radial hole extends to the surface of the planet pinion shaft；
The blind hole is communicated with the radial hole, and constitutes the oil circuit of lubricating oil；
Each gear is double helical tooth in the epicyclic gearbox.
Preferably, further include step-up gear, variable frequency drive motors and electric eddy current dynamometer, further include multiple sensings
Device, multiple yielding couplings；
The multiple sensor includes input terminal torque speed sensor, output end torque speed sensor；
The multiple yielding coupling includes the first yielding coupling, the second yielding coupling, third yielding coupling, the
Four yielding couplings and the 5th yielding coupling；
Variable frequency drive motors, the first yielding coupling, input terminal torque speed sensor, the second yielding coupling, planet
Gear-box, third yielding coupling, output end torque speed sensor, the 4th yielding coupling, step-up gear, the 5th elasticity
Shaft coupling, electric eddy current dynamometer are sequentially connected.
It preferably, further include pedestal；
Variable frequency drive motors, epicyclic gearbox, step-up gear, electric eddy current dynamometer and multiple sensors are placed in base
On seat；
Multiple yielding couplings are located at the top of the pedestal.
It preferably, further include numerical control device；
The numerical control device includes industrial personal computer, controller, data acquisition module and bus；
The industrial personal computer is passed according to input terminal torque speed sensor, the output end torque revolving speed of data collecting module collected
The signal of sensor, electric eddy current dynamometer and cooling tower, by controller to variable frequency drive motors, electric eddy current dynamometer and
Cooling tower is controlled；
The industrial personal computer, controller and data acquisition module are connected with each other by bus.
Preferably, the sliding bearing installation space includes bush(ing) bearing installation space, axial thrust bearing installation
Space；
The axial thrust bearing installation space is located at the outside of the bush(ing) bearing installation space；
When bush(ing) bearing is located in the bush(ing) bearing installation space, the bush(ing) bearing with it is described
Contact surface between planet pinion shaft has gap；
Lubricating oil is introduced the bush(ing) bearing and the planetary gear pin by the oil circuit in the planet pinion shaft
Gap between axis；
After axial thrust bearing is installed in the axial thrust bearing installation space, the planet carrier of the epicyclic gearbox
Side wall and the axial thrust bearing to constitute friction secondary；
After the bush(ing) bearing installation space installs bush(ing) bearing, the planet pinion shaft and the diameter
It is secondary that friction is constituted to sliding bearing.
Preferably, the sliding bearing includes bush(ing) bearing, axial thrust bearing；
When the sliding bearing is located in the sliding bearing installation space, the bush(ing) bearing is installed on radial direction
Sliding bearing installation space, the axial thrust bearing are installed on axial thrust bearing installation space；
The sliding bearing is installed in the planetary gear mounting hole.
Preferably, the planetary gear is provided with mounting hole；The mounting hole provides sliding bearing installation site；
The planetary gear mounting hole includes central axial through-hole, flat hole；
The central axial through-hole is arranged on the planetary gear central axis；
The flat hole is located at the both ends of the central axial through-hole
Preferably, the central axial through-hole of the planetary gear, the planetary gear flat hole constitute the sliding bearing
Installation space；
The central axial through-hole constitutes bush(ing) bearing installation space；
The flat hole constitutes axial thrust bearing installation space；
When sliding bearing is located in sliding bearing installation space, the central axial through-hole radially slides axis for installing
It holds, the flat hole is for installing the axial thrust bearing.
The present invention also provides a kind of sliding bear experiment methods, comprising: sliding bearing is installed on to above-mentioned sliding axle
It holds in the sliding bearing installation space of testing stand and is tested.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1, sliding bearing is packed into epicyclic gearbox inner planet gear inner hole by way of extruding or cold charge by the present invention,
Bush(ing) bearing and planet pin shaft composition friction pair do relative rotary motion, axial thrust bearing and planet carrier inner side end shape
Relative rotary motion is done at friction pair.
2, each gear tooth is double helical tooth in epicyclic gearbox of the present invention, and double helical tooth itself can offset each gear engaged transmission
Axial force in the process makes axial thrust bearing be solely subjected to the axial force due to caused by processing and installation error.
3, oil level is higher than the height of axial thrust bearing when planetary gear is operated to the top in epicyclic gearbox of the present invention,
Sufficient lubrication is carried out so that the two pairs of frictions formed to test sliding bearing and planet pinion shaft and planet carrier inner side end are secondary, by
At low speeds in epicyclic gearbox work, thus using lubricating system in the present invention epicyclic gearbox power loss is influenced
Less.
4, planet pinion shaft axis direction of the present invention opens axial blind hole, and axial medium position opens radial hole, axial blind hole
It is communicated with radial hole, as lubricant oil way, lubricating oil is introduced into the gap between bush(ing) bearing and planet pinion shaft
In.
5, the present invention has excellent shock insulation and cushioning effect to testing stand using cast iron base platform.
6, the present invention loads epicyclic gearbox using electric eddy current dynamometer, simulates the unloaded, negative of epicyclic gearbox
It carries, the load application of overload and frequent start-stop, and is cooled down the hot water that electric eddy current dynamometer flows out using cooling tower.
7, the present invention is mainly suitable for the installed sliding bearings of low-speed heave-load Herringbone-tooth planet gearbox inner hole of planetary gear
The measurement of lubrication and friction and wear behavior in the test of no-load test, load test, overload test and frequent start-stop, the limit carry
The measurement of lotus, and power consumption comparative test is carried out to the sliding bearing of different structure and different materials, it obtains and generates compared with less friction
Sliding bearing structure and material.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is a kind of sliding bearing experimental platform overall schematic of the present invention.
Fig. 2 is the sectional view of epicyclic gearbox of the present invention.
Fig. 3 is sliding bearing side view of the present invention.
Fig. 4 is planetary gear side view of the present invention.
Fig. 5 is method schematic diagram of the invention.
It is as shown in the figure:
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
The present invention provides a kind of sliding bearing experimental platform, including epicyclic gearbox 5；The epicyclic gearbox 5 includes planet
Gear pin shaft 15, planet carrier 17, planetary gear 14, sliding bearing installation space；Sliding bearing installation space is located at planetary gear
Between pin shaft 15 and planetary gear 14；In sliding bearing installation space after installation sliding bearing 13, sliding bearing 13 respectively with row
Star gear pin shaft 15, the composition friction of planet carrier 17 are secondary, preferably, when installation sliding bearing 13 in sliding bearing installation space
Afterwards, it is secondary to form friction with the side wall of planet pinion shaft 15, planet carrier 17 respectively for sliding bearing 13.
The planet pinion shaft 15 has blind hole 22, radial hole 23；The blind hole 22 is along the planet pinion shaft 15
The central axial center that the planet pinion shaft 15 is set on；The radial hole 23 is along 15 diameter of planet pinion shaft
To the middle part that the planet pinion shaft 15 is arranged in；Radial hole 23 extends to the surface of the planet pinion shaft 15；It is described
Blind hole 22 is communicated with the radial hole 23, and constitutes the oil circuit of lubricating oil 16；Each gear is herringbone in the epicyclic gearbox 5
Tooth.
The present invention provides a kind of sliding bearing experimental platform, further includes step-up gear 9, variable frequency drive motors 1 and electric whirlpool
Dynamometer machine 11 is flowed, further includes multiple sensors, multiple yielding couplings；The multiple sensor includes that input terminal torque revolving speed passes
Sensor 3, output end torque speed sensor 7；The multiple yielding coupling includes first yielding coupling the 2, second elasticity connection
Axis device 4, third yielding coupling 6, the 4th yielding coupling 8 and the 5th yielding coupling 10；It is sequentially connected frequency conversion drive electricity
Machine 1, the first yielding coupling 2, input terminal torque speed sensor 3, the second yielding coupling 4, epicyclic gearbox 5, third bullet
Property shaft coupling 6, output end torque speed sensor 7, the 4th yielding coupling 8, step-up gear 9, the 5th yielding coupling 10,
Electric eddy current dynamometer 11.
The present invention provides a kind of sliding bearing experimental platform, further includes pedestal 12；Variable frequency drive motors 1, epicyclic gearbox 5,
Step-up gear 9, electric eddy current dynamometer 11 and multiple sensors are placed on pedestal 12；Multiple yielding couplings are located at described
The top of pedestal 12.
The present invention provides a kind of sliding bearing experimental platform, further includes numerical control device；The numerical control device include industrial personal computer 19,
Controller 20, data acquisition module 18 and bus；The industrial personal computer 19 is turned round according to the input terminal that data acquisition module 18 acquires
Square speed probe 3, output end torque speed sensor 7, electric eddy current dynamometer 11 and cooling tower 21 signal, pass through control
Device 20 processed controls variable frequency drive motors 1, electric eddy current dynamometer 11 and cooling tower 21；The industrial personal computer 19, control
Device 20 and data acquisition module 18 are connected with each other by bus.
The sliding bearing installation space includes bush(ing) bearing installation space, axial thrust bearing installation space；Institute
State the outside that axial thrust bearing installation space is located at the bush(ing) bearing installation space；When bush(ing) bearing 1301
When in the bush(ing) bearing installation space, between the bush(ing) bearing 1301 and the planet pinion shaft 15
Contact surface has gap, that is, the contact mask between the bush(ing) bearing installation space and the planet pinion shaft 15
There is gap, to form oil circuit, oil is allowed to be lubricated into the gap；Oil circuit in the planet pinion shaft 15 will lubricate
Oil 16 introduces the gap between the bush(ing) bearing 1301 and the planet pinion shaft 15；When the axial thrust bearing
In installation space after installation axial thrust bearing, the side wall of the planet carrier 17 of the epicyclic gearbox 5 and the axial thrust axis
It is secondary to hold the friction of 1302 compositions；After the bush(ing) bearing installation space installs bush(ing) bearing, the planetary gear pin
It is secondary that axis 15 and the bush(ing) bearing 1301 constitute friction.
The sliding bearing 13 includes bush(ing) bearing 1301, axial thrust bearing 1302；When the sliding bearing 13
When in the sliding bearing installation space, the bush(ing) bearing 1301 is installed on bush(ing) bearing installation space,
The axial thrust bearing 1302 is installed on axial thrust bearing installation space；The sliding bearing 13 is installed on the planet tooth
In the mounting hole of wheel 14.
The planetary gear 14 is provided with mounting hole；The mounting hole provides sliding bearing installation site；The planet
The mounting hole of gear 14 includes central axial through-hole 1401, flat hole 1402；The central axial through-hole 1401 is arranged in the row
On the central axis of star gear 14；The flat hole 1402 is located at the both ends of the central axial through-hole 1401.In the fabrication process, In
On the central axis of the planetary gear 14, the central axial through-hole 1401 is formed, then, in the central axial through-hole 1401
Two sides form the flat hole 1402, as shown in figure 4, having between the central axial through-hole 1401 and the flat hole 1402 overlapping
Part.
The central axial through-hole 1401 of the planetary gear 14, the flat hole 1402 of the planetary gear 14 constitute the sliding
Bearing installation space；The central axial through-hole 1401 constitutes bush(ing) bearing installation space；The flat hole 1402 constitutes axis
Axial thrust bearing installation space；When sliding bearing 13 is located in sliding bearing installation space, the central axial through-hole 1401
For installing bush(ing) bearing 1301, the flat hole 1402 is for installing the axial thrust bearing 1302.
The present invention also provides a kind of sliding bear experiment methods, comprising: sliding bearing 13 is installed on to above-mentioned sliding axle
It holds in the sliding bearing installation space of testing stand and is tested.
In detail, variable frequency drive motors 1 are placed in one end of pedestal 12；1 output shaft of variable frequency drive motors passes through the first bullet
Property shaft coupling 2 connect with input terminal torque speed sensor 3, input terminal torque speed sensor 3 pass through the second yielding coupling 4
It is connect with 5 high speed input shaft of epicyclic gearbox, 5 low-speed output shaft of epicyclic gearbox passes through third yielding coupling 6 and output end
Torque speed sensor 7 connects, and output end torque speed sensor 7 is low with step-up gear 9 by the 4th yielding coupling 8
Speed input axis connection, the speedy carding process axis of step-up gear 9 are connect by the 5th yielding coupling 10 with electric eddy current dynamometer 11,
Electric eddy current dynamometer 11 is placed in the other end of pedestal 12；Sliding bearing 13 is by subjects, and the sliding bearing 13 includes
Bush(ing) bearing 1301 and axial thrust bearing 1302 are packed into 5 expert of epicyclic gearbox by way of extruding or cold charge
Inner hole, that is, mounting hole of star gear 14；14 inner hole of planetary gear includes central axial through-hole 1401 and flat hole 1402, the flat hole
1402 are located at the both ends of central axial through-hole 1401.Central axial through-hole 1401 is for installing bush(ing) bearing 1301, flat hole
1402 for installing axial thrust bearing 1302.
The epicyclic gearbox 5 can be the low-speed heave-load type reduction gear box that specified input speed is low, rated power is big；
Each gear tooth is double helical tooth in the epicyclic gearbox 5, and double helical tooth itself can be offset during each gear engaged transmission
Axial force is solely subjected to axial thrust bearing 1302 due to relatively small axial caused by processing and installation error is in transmission process
Power.
The input terminal torque speed sensor 3 measures the torque and revolving speed of 5 high speed input shaft of epicyclic gearbox,
For calculating 5 input power of epicyclic gearbox；It is low that the output end torque speed sensor 7 measures the epicyclic gearbox 5
The torque and revolving speed of fast output shaft, for calculating 5 output power of epicyclic gearbox；The sliding bearing 13 is installed on the row
14 inner hole of planetary gear of star gear-box 5；The bush(ing) bearing 1301 forms friction pair with the planet pinion shaft 15
Relative rotary motion is done, the side wall formation friction pair of the axial thrust bearing 1302 and the planet carrier 17 does relative rotation fortune
It is dynamic, the height of axial thrust bearing 1302 when oil level is higher than the operating of planetary gear 14 to the top in epicyclic gearbox 5, to cunning
Two pairs of frictions that dynamic bearing 13 and planet pinion shaft 15 and planet carrier 17 form are secondary to carry out sufficient lubrication.
Radial hole 23 is opened along axial open-blind hole 22, axial middle part in 15 center of planet pinion shaft, and axial blind hole is
Blind hole 22 is communicated with radial hole 23, and as lubricant oil way, lubricating oil 16 is introduced bush(ing) bearing 1301 and planetary gear
In gap between pin shaft 15.The lubricant oil way between bush(ing) bearing 1301 and planet pinion shaft 15 into
Hydraulic fluid port must not be located at main bearing area.When the main bearing area is the planetary gear stress, it is formed by main
Stress area.
The step-up gear 9 is preferably the parallel axes step-up gear；The parallel axes speed increasing gear
The large torque that 5 low-speed output shaft of epicyclic gearbox exports is converted smaller torque by case, for reducing electric eddy current dynamometer 11
Input torque.The load to testing stand is realized by the electric eddy current dynamometer 11；The industrial personal computer 19 by controller 20,
Data acquisition module 18 and bus are connect with other control units, realize to all master control electrical apparatus control, operating parameter setting,
Starting, operation, the stopping of system each unit are realized in the acquisition of measurement data, the execution of optional test program.
The testing stand can carry out no-load test, load test, overload test, start and stop test and frictional force to having a competition
Test, to examine lubrication and friction and wear behavior of the sliding bearing 13 under each operating condition, determine ultimate load, and to different structure and
The sliding bearing 13 of different materials carries out power consumption comparative test, obtains 13 structure of sliding bearing and material generated compared with less friction
Material.
The working principle of the invention is:
Each gear tooth uses double helical tooth in epicyclic gearbox 5, and double helical tooth itself can offset each gear engaged transmission process
In axial force, be solely subjected to axial thrust bearing 1302 due to axis smaller caused by processing and installation error is in transmission process
Xiang Li, abrasion is smaller, so the present invention mainly inputs parametric test diameter using 1301 bearing parameter of bush(ing) bearing as test
To sliding bearing 1301 and axial thrust bearing 1302.
A kind of sliding bear experiment method provided by the present invention includes the following steps: no-load test step, load performance examination
Test step, overload test step, start and stop test procedure, frictional force comparative test step etc..
In no-load test step, required according to low-speed heave-load operating condition of test, in particular range, such as 0.4~1.2m/
Within the scope of s, choose bush(ing) bearing 1301 needed for linear velocity similar in actual condition；According to 5 structure of epicyclic gearbox
It calculates epicyclic gearbox 5 and inputs test speed；Testing stand is driven to input test speed according to gained is calculated by variable frequency drive motors 1
The positive and negative low-speed running specific time, such as 2 hours, while electric eddy current dynamometer 11 does not apply load, so that radially sliding axis
Hold 1301 idle runnings under selected linear velocity；After the completion of test, sliding bearing 13 is dismantled, and examine and radially slide axis
Hold 1301 and 1302 wear condition of axial thrust bearing.
In load performance test procedure, required according to low-speed heave-load operating condition of test, in particular range, such as 0.4
Within the scope of~1.2m/s choose bush(ing) bearing 1301 needed for linear velocity similar in actual condition；In particular range,
Such as within the scope of 8~20MPa choose bush(ing) bearing 1301 needed for similar in actual condition than pressure value；According to planet tooth
5 Structure Calculation epicyclic gearbox 5 of roller box inputs test speed and load torque；By variable frequency drive motors 1 drive testing stand according to
It calculates gained and inputs test speed low speed Positive work specified rotation number, such as 3 × 106Turn, at the same electric eddy current dynamometer 11 according to
It calculates gained load torque and applies load, so that bush(ing) bearing 1301 is in selected linear velocity and than pressure band carrying
Row；Disassembly test sliding bearing 13 examines bush(ing) bearing 1301 and 1302 wear condition of axial thrust bearing after test.
In overload test step, required according to low-speed heave-load operating condition of test, in particular range, such as 0.4~1.2m/
Within the scope of s, choose bush(ing) bearing 1301 needed for linear velocity similar in actual condition；In particular range, such as 8~
Within the scope of 20MPa choose bush(ing) bearing 1301 needed for similar in actual condition than pressure value；According to 5 knot of epicyclic gearbox
Structure calculates epicyclic gearbox 5 and inputs test speed and load torque；Drive testing stand according to calculating gained by variable frequency drive motors 1
Input test speed low speed Positive work specified rotation number, such as 3 × 106Turn, while electric eddy current dynamometer 11 is according to computational load
The percentage of torque, such as 110% application load, operating finish disassembly test sliding bearing 13 and check bush(ing) bearing 1301
With the wear condition of axial thrust bearing 1302；If be not seriously worn, continues to test after installation, be driven by frequency conversion
Dynamic motor 1 drives testing stand to input test speed low speed Positive work 3 × 10 according to calculating6Turn, while electric eddy current dynamometer 11
Apply load, such as 120% according to the particular percentile of computational load torque, operating finishes disassembly test sliding bearing 13 and checks
The wear condition of bush(ing) bearing 1301 and axial thrust bearing 1302；It is similar if be not seriously worn still,
Continue to test after installation, rotation direction, velocity of rotation, number of revolutions are constant, and load, which successively increases, calculates gained load
Particular percentile, such as 10%, until bush(ing) bearing 1301 or axial thrust bearing 1302 are seriously worn, cause not
It can be further continued for being tested；This time a preceding test load for test is that the limit of the sliding bearing 13 under required linear velocity carries
Lotus.The axial force during each gear engaged transmission can be offset due to double helical tooth itself, thus axial thrust bearing 1302 is born
Load is smaller, and abrasion is also smaller, and the ultimate load of sliding bearing 13 is the ultimate load of bush(ing) bearing 1301.
In start and stop test procedure, weigh before test to bush(ing) bearing 1301 and axial thrust bearing 1302,
It is installed to after weighing in epicyclic gearbox 5；It is required according to low-speed heave-load operating condition of test, is selected within the scope of 0.4~1.2m/s
After taking start-up course to stablize needed for bush(ing) bearing 1301 with linear velocity similar in actual condition, in particular range, example
Such as, chosen within the scope of 8~20MPa after start-up course is stablized needed for bush(ing) bearing 1301 with similar in actual condition than pressure
Value inputs test speed and load torque according to 5 Structure Calculation epicyclic gearbox 5 of epicyclic gearbox, also needs to choose and practical work
Condition similar starting time and dwell time；Apply load according to load torque calculated by electric eddy current dynamometer 11, by becoming
Test speed needed for frequency driving motor 1 reaches epicyclic gearbox 5 within the starting time of selection, steady running specific time
Afterwards, such as 3 minutes, 5 revolving speed of epicyclic gearbox is reduced into zero speed in the dwell time of selection, this process is tested as start and stop
A cyclic process；Repeat start and stop test cycle process specific times, such as 104It is secondary, dismantle 1301 He of bush(ing) bearing
Axial thrust bearing 1302 after scrubbing bush(ing) bearing 1301 and axial thrust bearing 1302, checks wear condition,
And weigh, calculate specific times, such as 104, bush(ing) bearing 1301 and axial thrust bearing 1302 after start and stop test
Wear condition, and then the abrasion loss of each start and stop circulation is calculated, as bush(ing) bearing 1301 and axial thrust bearing
One of the foundation that 1302 service life calculated.
In frictional force comparative test step, the sliding of different structure form, different structure size and different materials is made
Bearing 13 includes the sample of bush(ing) bearing 1301 and axial thrust bearing 1302, is installed in epicyclic gearbox 5；According to negative
Test requirements document is carried, carries out load test at identical conditions, after the test, calculates and every kind of 13 sample of sliding bearing is installed
The wasted power of epicyclic gearbox 5, to obtain the sample with minimum coefficient of friction.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (4)
1. a kind of sliding bearing experimental platform, which is characterized in that the sliding bearing experimental platform includes sequentially connected frequency conversion drive
Motor (1), the first yielding coupling (2), input terminal torque speed sensor (3), the second yielding coupling (4), planetary gear
Case (5), third yielding coupling (6), output end torque speed sensor (7), the 4th yielding coupling (8), step-up gear
(9), the 5th yielding coupling (10) and electric eddy current dynamometer (11), the epicyclic gearbox (5) includes planet pinion shaft
(15), planet carrier (17), planetary gear (14) and sliding bearing installation space；
The planet pinion shaft (15) has blind hole (22) and radial hole (23)；The blind hole (22) is along the planetary gear pin
The central axial setting of axis (15) is on the center of the planet pinion shaft (15)；The radial hole (23) is along the planet tooth
Wheel pin shaft (15) is radially arranged in the middle part of the planet pinion shaft (15)；The radial hole (23) extends to the planet tooth
Take turns the surface of pin shaft (15)；The blind hole (22) communicates with the radial hole (23), and constitutes the oil circuit of lubricating oil (16)；
Each gear in the epicyclic gearbox (5) is double helical tooth,
The sliding bearing installation space is between the planet pinion shaft (15) and the planetary gear (14)；Sliding axle
It contracts and includes bush(ing) bearing (1301) and axial thrust bearing (1302),
The sliding bearing installation space includes bush(ing) bearing installation space and axial thrust bearing installation space；The row
Star gear (14) is provided with mounting hole；The mounting hole includes central axial through-hole (1401) and flat hole (1402)；The center
Axially extending bore (1401) is arranged on the central axis of the planetary gear (14)；The flat hole (1402) is located at described central axial
The both ends of through-hole (1401),
The central axial through-hole (1401) constitutes the bush(ing) bearing installation space；Described in the flat hole (1402) is constituted
Axial thrust bearing installation space, the central axial through-hole (1401) is for installing the bush(ing) bearing (1301), institute
Flat hole (1402) are stated for installing the axial thrust bearing (1302)；
When it is described be located in the bush(ing) bearing installation space to sliding bearing (1301) when, the bush(ing) bearing
(1301) contact surface between the planet pinion shaft (15) has gap；Oil circuit in the planet pinion shaft (15)
Lubricating oil (16) are introduced into the gap between the bush(ing) bearing (1301) and the planet pinion shaft (15)；The row
It is secondary that star gear pin shaft (15) and the bush(ing) bearing (1301) constitute friction；
When the axial thrust bearing (1302) are located in the axial thrust bearing installation space, the epicyclic gearbox
(5) side wall of planet carrier (17) and the axial thrust bearing (1302) constitute friction pair, and the epicyclic gearbox (5)
Interior oil level is higher than the height of the axial thrust bearing (1302) when planetary gear (14) operating to the top.
2. sliding bearing experimental platform according to claim 1, which is characterized in that further include pedestal (12)；The frequency conversion is driven
Dynamic motor (1), epicyclic gearbox (5), step-up gear (9), electric eddy current dynamometer (11), input terminal torque speed sensor
(3) and output end torque speed sensor (7) is placed on pedestal (12)；First yielding coupling (2), the second elasticity
Shaft coupling (4), third yielding coupling (6), the 4th yielding coupling (8) and the 5th yielding coupling (10) are located at the pedestal
(12) top.
3. sliding bearing experimental platform according to claim 1, which is characterized in that further include numerical control device；The numerical control dress
It sets including industrial personal computer (19), controller (20), data acquisition module (18) and bus；The industrial personal computer (19) is adopted according to data
Collect input terminal torque speed sensor (3), the output end torque speed sensor (7), electric eddy current dynamometer of module (18) acquisition
(11) and the signal of cooling tower (21), by controller (20) to variable frequency drive motors (1), electric eddy current dynamometer (11) with
And cooling tower (21) is controlled；The industrial personal computer (19), controller (20) and data acquisition module (18) pass through bus
It is connected with each other.
4. a kind of sliding bear experiment method characterized by comprising sliding bearing (13) to be installed in claims 1 to 3
It is tested in the sliding bearing installation space of described in any item sliding bearing experimental platforms.
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| CN109855779A (en) * | 2018-12-20 | 2019-06-07 | 佛山市罗斯特传动设备有限公司 | A kind of planetary reducer Torque Measuring System and test method |
| CN111811814B (en) * | 2020-08-27 | 2021-01-22 | 北京航空航天大学 | Dynamic load testing method for composite planetary gear transmission mechanism with wet type gear shifting element |
| CN113776829B (en) * | 2021-08-27 | 2023-04-11 | 上海交通大学 | Sliding bearing friction torque wireless measurement device and method |
| CN113775736B (en) * | 2021-09-06 | 2024-02-09 | 上海涟屹轴承科技有限公司 | Oil distribution ring and gear box oil distribution system thereof |
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| CN100510679C (en) * | 2007-08-24 | 2009-07-08 | 中国北方车辆研究所 | Planet wheel bearing test device |
| EP2662598A1 (en) * | 2012-05-08 | 2013-11-13 | ZF Wind Power Antwerpen NV | Planetary gear stage with plain bearings as planet bearings |
| EP2975299A1 (en) * | 2014-07-18 | 2016-01-20 | Siemens Aktiengesellschaft | Slide bearing for a planetary carrier |
| DE102015101885B4 (en) * | 2015-02-10 | 2016-10-27 | Schenck Rotec Gmbh | Transmission for a spin tester |
| CN104931275B (en) * | 2015-06-15 | 2018-01-12 | 福州大学 | A kind of function realizing method of the bench test device based on dual-motor drive system |
| CN105865792B (en) * | 2016-05-26 | 2018-10-19 | 西北工业大学 | A kind of fixed texture Sliding bearing work bench of bearing shell pivot journal |
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