CN102564764B - Aircraft engine spindle bearing testing machine - Google Patents

Aircraft engine spindle bearing testing machine Download PDF

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Publication number
CN102564764B
CN102564764B CN201110461997.7A CN201110461997A CN102564764B CN 102564764 B CN102564764 B CN 102564764B CN 201110461997 A CN201110461997 A CN 201110461997A CN 102564764 B CN102564764 B CN 102564764B
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China
Prior art keywords
bearing
test
test bearing
transmission shaft
testing machine
Prior art date
Application number
CN201110461997.7A
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Chinese (zh)
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CN102564764A (en
Inventor
王爱群
孙岩
吕晓燕
张卫
秦乐森
孙文正
钱军
王巍
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洛阳工铭机电设备有限公司
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Priority to CN201110461997.7A priority Critical patent/CN102564764B/en
Publication of CN102564764A publication Critical patent/CN102564764A/en
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Publication of CN102564764B publication Critical patent/CN102564764B/en

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Abstract

The invention belongs to the aircraft bearing detecting technology and provides an aircraft engine spindle bearing testing machine. a testing mechanism of the aircraft engine spindle bearing testing machine mainly comprises a cantilever supporting mechanism of a testing bearing (15), axial and radial loading mechanisms, a driving mechanism, a transmission mechanism and a heating device (23) as well as a detecting and collecting device, wherein the axial and radial loading mechanisms are used for applying changing torque and size alternation to the testing bearing (15); the heating device (23) is used for heating the testing bearing (15); two types of transmission shafts (5) are arranged; and one type of the transmission shafts is used for testing low load and high rotation speed of the testing bearing while the other type is a fixed structure used for testing bearings with diameters of more than 100 mm and bearings with rotation speeds of less than 25000 rpm in the testing bearings. According to the invention, through three groups of transmission shafts of two sets of testing mechanisms, the testing range of the testing bearing of the testing machine is enlarged.

Description

Aircraft engine spindle bearing testing machine
Technical field
The invention belongs to aircraft bearing detection technique, relate generally to a kind of aircraft engine spindle bearing testing machine.
Technical background
Aeromotor main shaft bearing is the important transmission component of aeromotor, and along with the development of aircraft industry, aeromotor main shaft bearing is also improving always and improving, by the initial slow-speed of revolution, and low load high rotating speed by now, top load.Aeromotor main shaft bearing plays vital effect aeromotor in service, in the course of work of aeromotor, aeromotor main shaft bearing is not only bearing high rotating speed, top load, also will in the environment of high-temperature, turn round for a long time simultaneously.In order to improve the work quality of aeromotor, first to improve rotating speed, the load performance parameter of aeromotor main shaft bearing.And there is no at present aircraft engine spindle bearing testing machine reasonable in design and comparatively scientific and rational method for testing and detecting, control to a certain extent the detection of aeromotor main shaft bearing and test progress, thereby restricted the paces of the improvement and perfection of aeromotor main shaft bearing performance parameter.
The general drive shaft system being fixed on lathe bed that adopts of test mechanism in prior art in aviation Main Shaft Bearing of Engine sample machine, can only be used for high measurement of rotating speed or the top load test of test bearing in certain bearing size, structure is comparatively single, has restricted to a certain extent the paces of the improvement and perfection of aeromotor main shaft bearing performance parameter.
Summary of the invention
For solving the problems of the technologies described above, the object of the invention is to propose a kind of aircraft engine spindle bearing testing machine.
The present invention adopts following technical scheme for completing foregoing invention object:
A kind of aircraft engine spindle bearing testing machine, the test mechanism that described spindle bearing testing machine has mainly comprise the cantilever supporting mechanism of test bearing, to test bearing apply the moment of torsion of variation and big or small alternation axially, radial loaded mechanism, driving mechanism, gear train and for heating arrangement that test bearing is heated with detect harvester; Described cantilever supporting mechanism, can counterrotating structure between the inside and outside circle of formation test bearing for test bearing locate and making test bearing cantilever structure be positioned at one end of test axle; The electric main shaft that driving mechanism has is connected with the transmission shaft in gear train, and described transmission shaft is connected with the test axle of test bearing, forms the structure that described test bearing rotates with the rotation of electric main shaft; Described transmission shaft is two kinds, and wherein a kind of transmission shaft is for the high-revolving test of low load of test bearing, and the diameter range of test bearing is bearing more than 100mm; The range of speeds is below 25000rpm; Another kind of transmission shaft is for the slow-revving test of top load of test bearing, the bearing below the diameter range 100mm of test bearing; The range of speeds range of speeds is more than 25000rpm.
Described test mechanism is two groups, and wherein the transmission shaft of battery of tests mechanism is for the bearing below the diameter range 100mm of test bearing; The range of speeds range of speeds is more than 25000rpm.Needed high rotating speed or top load while being used for meeting bearing test; The transmission shaft of another group test mechanism is fixed sturcture, is bearing more than 100mm for the diameter range of test bearing; The range of speeds is the test of 25000rpm with lower bearing.
Be provided with the test bearing that is cantilever structure in one end of described transmission shaft, be arranged on and load in overcoat by test bearing, the inner ring of test bearing is fixed on test axle, test axle is connected on the end face of transmission shaft, make the inner ring of test bearing do the rotation consistent with actual condition rotating speed by transmission shaft, required rotating speed while carrying out warranty test.
The axial load bar that described axial loading structure axially, in radial loaded mechanism comprises axial load cylinder, is connected with axial load cylinder; Described axial load bar contacts with test bearing gland to realize axially and loads; The spherical plain bearing rod end that described radial loaded structure comprises radial loaded oil cylinder, is connected with radial loaded oil cylinder; Described spherical plain bearing rod end loads the outer loading fork putting and is connected and realizes radial loaded with being connected to; On described axial load cylinder, the lathe bed that radial loaded oil cylinder is fixed on testing machine and adjustable position.
The set heating arrangement for test bearing is heated is connected on the lubricant passage way of test bearing, in order to realize the heating of test bearing and to lubricate.
Described detection harvester comprises temperature sensor and vibration transducer, and the loading that wherein said temperature sensor is positioned at the non-rotating outer ring of test bearing puts; The loading that set vibration transducer is fixed on the non-rotating outer ring of test bearing puts.
A kind of aircraft engine spindle bearing testing machine that the present invention proposes has increased the test specification of this testing machine test bearing by three groups of transmission shafts of two cover test mechanisms, test bearing is cantilever structure at the trial, inner ring rotates with electric main shaft, in rotating, apply at the same time or separately axial load and radial load and make axial load and radial load puts on the outer ring of test bearing; Simultaneously can also be lubricated test bearing and heat by the heating arrangement being connected on test bearing lubricant passage way, and be ejected into by lubricating system the actual condition that simulates aeromotor main shaft bearing on test bearing and test; Outside test bearing outer ring loads, put and place vibration and temperature sensor, temperature sensor contacts with test bearing outer ring, acquisition test bearing floor data at the trial, the signal data such as temperature, vibration gathering is sent to computing machine, analyze judgement by computing machine, make diagnosis, there is the feature really and accurately that detects.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of cantilever supporting mechanism in the present invention.
Fig. 3 is the structural representation of gear train in the present invention.
Fig. 4 is structural representation axial in the present invention, radial loaded mechanism.
In figure: 1, lathe bed, 2, electric main shaft, 3, electric casting main shaft casts case, 4, the dish that is in transmission connection, 5, transmission shaft, 6, oil seal ring, 7, middle spacer sleeve, 8, transmission foundry goods case, 9, bearing insert, 10, spring bearing, 11, test axle, 12, test bearing gland, 13, set nut, 14, load overcoat, 15, test bearing, 16, axial load bar, 17, the first pressure transducer, 18, axial load cylinder, 19, weak current box, 20, spherical plain bearing rod end, 21, the second pressure transducer, 22, radial loaded oil cylinder, 23, heating arrangement.
Embodiment
With specific embodiment, the present invention is illustrated by reference to the accompanying drawings;
As shown in Figure 1, a kind of aircraft engine spindle bearing testing machine, the test mechanism that described spindle bearing testing machine has mainly comprise the cantilever supporting mechanism of test bearing 15, to test bearing 15 apply the moment of torsion of variation and big or small alternation axially, radial loaded mechanism, driving mechanism, gear train and for heating arrangement 23 that test bearing is heated with detect harvester; Described cantilever supporting mechanism is for locating test bearing 15 and making test bearing 15 cantilever structures be positioned at one end of test axle 11, and forming between the inside and outside circle of test bearing 15 can counterrotating structure; The electric main shaft 2 that driving mechanism has is connected with the transmission shaft 5 in gear train, and described transmission shaft 5 is connected with the test axle 11 of test bearing 15, forms the structure that described test bearing 15 rotates with the rotation of electric main shaft; Described transmission shaft is two kinds, and wherein a kind of transmission shaft, for the high-revolving test of low load of test bearing, is bearing more than 100mm for the diameter range of test bearing; The range of speeds is the test bearing below 25000rpm; Another kind of transmission shaft is for the slow-revving test of top load of test bearing, the bearing below the diameter range 100mm of test bearing; The range of speeds range of speeds is more than 25000rpm.
Described test mechanism is two groups, and wherein the transmission shaft of battery of tests mechanism is for the bearing below the diameter range 100mm of test bearing; The range of speeds range of speeds is more than 25000rpm.Needed high rotating speed or top load while being used for meeting bearing test; The transmission shaft of another group test mechanism is fixed sturcture, is bearing more than 100mm for the diameter range of test bearing; The range of speeds is the test of 25000rpm with lower bearing.
In conjunction with Fig. 1, Fig. 2, the cantilever supporting mechanism of described test bearing has in order to inner ring is fixed on to the set nut 13 on test axle 11, and test axle 11 is connected on the end face of transmission shaft 5, and described transmission shaft 5 is supported in test bearing by spring bearing 10; Described test bearing 15 is arranged on and loads in overcoat 14, and is compressed by test bearing gland 12, thereby forms the cantilever structure to test bearing the structure that the inner ring of test bearing is rotated with electric main shaft 2.
In conjunction with Fig. 3, power is passed to electric main shaft 2 by the motor of described driving mechanism, and described electric main shaft 2 is connected with transmission shaft 5 by tightrope, thereby rotating speed is passed to transmission shaft 5, and rotated by the inner ring of transmission shaft motoring ring test bearing; In conjunction with Fig. 4, the axial load bar 18 that described axial loading structure axially, in radial loaded mechanism comprises axial load cylinder, is connected with axial load cylinder; Axial load is to promote the bulb load bar 16 of tailpiece of the piston rod and the gland 12 of test bearing contacts to realize by axial load cylinder 18, on loading center the center line in test axle; The spherical plain bearing rod end 20 that described radial loaded structure comprises radial loaded oil cylinder 22, is connected with radial loaded oil cylinder 22, radial load is to pull radial loaded fork to produce pulling force to loading overcoat 14 by radial loaded oil cylinder 22 pistons, thereby realize radial loaded, radial loaded is perpendicular to the axis of test axle, and loading center is also consistent with the center of test; On described axial load cylinder 18, the lathe bed 1 that radial loaded oil cylinder 22 is fixed on testing machine and adjustable position, axial and radial loaded oil cylinder is all fixed on and loads on tripod, loading tripod is connected with the T-shaped bolt of being connected to of lathe bed, on lathe bed, have rectangular T-shaped hole, be convenient to the axial and radial loaded position adjustments to different model test bearing, ensure the precision loading; The set heating arrangement for test bearing is heated is connected on the lubricant passage way of test bearing, in order to realize the heating of test bearing and to lubricate; The loading that set temperature sensor is positioned at the non-rotating outer ring of test bearing puts, and directly contacts with test bearing outer ring; The loading that set vibration transducer is fixed on the non-rotating outer ring of test bearing puts, and on magnet adsorption, its vibration signal is gathered.
Described heating arrangement is heating cabinet.
A kind of aeromotor main shaft bearing test method, test bearing 15 is to cantilevered and is supported on one end of transmission shaft 5, be arranged on and load in overcoat 14 by test bearing 15, the inner ring of test bearing 15 is fixed on test axle 11, test axle 11 is connected on the end face of transmission shaft 5, forms the cantilever structure of test bearing 15; Make the inner ring of test bearing do the rotation consistent with actual condition rotating speed by transmission shaft 5, required rotating speed while carrying out warranty test; The rotation of transmission shaft 5 motoring ring test bearings 15 is the rotating speed of electric main shaft 2 to be passed to transmission shaft 5 by tightrope realize; Can apply axial load and radial load to test bearing 15 respectively or simultaneously; The axial load that test bearing 15 is loaded is by axial load cylinder 18, contacts realization by the axial load bar 16 being connected on axial load cylinder 18 with test bearing gland 12; And axially between load cylinder 18 and axial load bar 16, the first pressure transducer 17 is being set; The radial load that test bearing is loaded is by radial loaded oil cylinder 22, is connected realization by the spherical plain bearing rod end 20 being connected on radial loaded oil cylinder 22 with the loading fork being connected on loading overcoat 14; On described axial load cylinder 18, the lathe bed 1 that radial loaded oil cylinder 22 is fixed on testing machine and adjustable position, thus by axially load load, radial loaded load on in the loading of test bearing 15 in the heart; The heating arrangement 23 heating under the operating mode that employing loads the rotation of test bearing inner ring, outer ring is connected on the lubricant passage way of test bearing 15, lubricating oil enters in heating arrangement, lubricating oil after heating is injected on test bearing, realizes the heating of test bearing with lubricated; The temperature sensor putting outward by being arranged on the loading of the non-rotating outer ring of test bearing, the temperature signal of acquisition test bearing, the vibration transducer putting outward by being arranged on the loading of the non-rotating outer ring of test bearing, the vibration signal of acquisition test bearing, and the rotating speed of inner ring when test bearing is tested, the axial load, radial load and temperature signal, the vibration signal in the time of this operating condition of test that apply are delivered to computing machine, and by computing machine, according to its test routine program software, to test bearing, the actual state in the time testing detects, judges.

Claims (6)

1. an aircraft engine spindle bearing testing machine, the test mechanism that described spindle bearing testing machine has includes: driving mechanism, gear train, detect harvester, the cantilever supporting mechanism of test bearing (15), to test bearing (15) apply moment of torsion that size alternately changes axially, radial loaded mechanism, and heating arrangement (23) for test bearing (15) is heated; Described cantilever supporting mechanism is for locating test bearing (15) and making the cantilever supporting mechanism of test bearing be positioned at one end of test axle (11), and forming between the inside and outside circle of test bearing (15) can counterrotating structure; The electric main shaft (2) that described driving mechanism has is connected with the transmission shaft (5) in gear train, described transmission shaft (5) is connected with the test axle of test bearing (15), forms the structure that described test bearing (15) rotates with the rotation of electric main shaft (2); It is characterized in that: described transmission shaft (5) is two kinds needed high rotating speed or top load while being respectively used to meet bearing test; Wherein transmission shaft is for the high-revolving test of low load of test bearing, and for the bearing below the diameter range 100mm of test bearing, the range of speeds is more than 25000rpm; Another kind of transmission shaft is fixed sturcture, is more than 100mm for the diameter range of test bearing, and the range of speeds is the test of 25000rpm with lower bearing.
2. aircraft engine spindle bearing testing machine according to claim 1, is characterized in that: described test mechanism is two groups, needed high rotating speed or top load when meeting bearing test; Wherein the transmission shaft of battery of tests mechanism is for the bearing below the diameter range 100mm of test bearing, and the range of speeds is more than 25000rpm; The transmission shaft of another group test mechanism is fixed sturcture, is more than 100mm for the diameter range of test bearing, and the range of speeds is the test of 25000rpm with lower bearing.
3. aircraft engine spindle bearing testing machine according to claim 1, it is characterized in that: be provided with the test bearing (15) that is cantilever structure in one end of described transmission shaft (5), be arranged on and load in overcoat (14) by test bearing (15), the inner ring of test bearing (15) is fixed on test axle (11), test axle (11) is connected on the end face of transmission shaft (5), make the inner ring of test bearing do the rotation consistent with actual condition rotating speed by transmission shaft (5), required rotating speed while carrying out warranty test.
4. aircraft engine spindle bearing testing machine according to claim 1, is characterized in that: the axial load bar (16) that described axial loading structure axially, in radial loaded mechanism comprises axial load cylinder (18), is connected with axial load cylinder (18); Axially load bar (16) contacts with test bearing gland (12) to realize axially and loads; The spherical plain bearing rod end (20) that radial loaded structure comprises radial loaded oil cylinder (22), is connected with radial loaded oil cylinder (22); Spherical plain bearing rod end (20) be connected to the loading fork loading on overcoat (14) and be connected and realize radial loaded; On described axial load cylinder, the lathe bed that radial loaded oil cylinder is fixed on testing machine and adjustable position.
5. aircraft engine spindle bearing testing machine according to claim 1, it is characterized in that: the set lubricant passage way that is connected on test bearing for the heating arrangement (23) that test bearing is heated, in order to the heating that realizes test bearing with lubricated.
6. aircraft engine spindle bearing testing machine according to claim 1, is characterized in that: described detection harvester comprises temperature sensor and vibration transducer, and the loading that wherein said temperature sensor is positioned at the non-rotating outer ring of test bearing puts; The loading that set vibration transducer is fixed on the non-rotating outer ring of test bearing puts.
CN201110461997.7A 2011-12-31 2011-12-31 Aircraft engine spindle bearing testing machine CN102564764B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN102564764B true CN102564764B (en) 2014-10-29

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