CN202886099U - Aeroengine main shaft bearing testing machine - Google Patents

Aeroengine main shaft bearing testing machine Download PDF

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Publication number
CN202886099U
CN202886099U CN 201120578531 CN201120578531U CN202886099U CN 202886099 U CN202886099 U CN 202886099U CN 201120578531 CN201120578531 CN 201120578531 CN 201120578531 U CN201120578531 U CN 201120578531U CN 202886099 U CN202886099 U CN 202886099U
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CN
China
Prior art keywords
bearing
test
test bearing
testing machine
transmission shaft
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Withdrawn - After Issue
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CN 201120578531
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Chinese (zh)
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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Luoyang Gongming Machinery and Electronic Equipment Co Ltd
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Luoyang Gongming Machinery and Electronic Equipment Co Ltd
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Abstract

The utility model provides an aeroengine main shaft bearing testing machine, which belongs to the aviation bearing detection technical field. The testing machine has testing mechanisms. Each testing mechanism mainly comprises a cantilever supporting mechanism of a test bearing (15), an axial and radial loading mechanism for exerting loads of variable torque and alternate magnitudes on the test bearing (15), a drive mechanism, a transmission mechanism, a heating device (23) for heating the test bearing (15) and a detection collecting device. There are two kinds of transmission shafts (5). One kind of the transmission shafts is applied for performing low-load high-rotating-speed tests on the test bearing while the other kind of the transmission shafts has a fixed structure and is applied for testing bearings with a diameter more than 100 mm and a rotating speed less than 25000 rpm. By means of the three groups of transmission shafts of the two sets of testing mechanisms, the testing machine provided by the utility model has an enlarged testing range for the test bearing.

Description

Aircraft engine spindle bearing testing machine
Technical field
The utility model belongs to the aircraft bearing detection technique, relates generally to a kind of aircraft engine spindle bearing testing machine.
Technical background
The aeromotor main shaft bearing is the important transmission component of aeromotor, and along with the development of aircraft industry, the 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.The aeromotor main shaft bearing plays vital effect aeromotor in service, in the course of work of aeromotor, the aeromotor main shaft bearing is not only bearing high rotating speed, top load, also will turn round for a long time in the environment of high-temperature simultaneously.In order to improve the work quality of aeromotor, at 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 that is fixed on the lathe bed that adopts of test mechanism in the prior art in the 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.
The utility model content
For solving the problems of the technologies described above, the purpose of this utility model is to propose a kind of aircraft engine spindle bearing testing machine.
The utility model adopts following technical scheme for finishing above-mentioned utility model purpose:
A kind of aircraft engine spindle bearing testing machine, the test mechanism that described spindle bearing testing machine has mainly comprise test bearing cantilever supporting mechanism, to test bearing apply the moment of torsion of variation and big or small alternation axially, radial loaded mechanism, driving mechanism, gear train and be used for the heating arrangement that test bearing is heated and detect harvester; Described cantilever supporting mechanism is used for the test bearing location and makes the test bearing cantilever structure be positioned at an end of test axle, and consisting of between the inside and outside circle of test bearing can counterrotating structure; The electric main shaft that driving mechanism has links to each other with the transmission shaft in the gear train, and described transmission shaft links to each other with the test axle of test bearing, consists of 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 used for the high-revolving test of low load of test bearing, and the diameter range of test bearing is the following bearing of 100mm; The range of speeds is more than the 25000rpm; Another kind of transmission shaft is used for the slow-revving test of top load of test bearing, and the diameter range that is used for test bearing is the above bearing of 100mm, and the range of speeds is that 25000rpm is with lower bearing.
End at described transmission shaft is provided with the test bearing that is cantilever structure, being about to test bearing is installed in the loading overcoat, the inner ring of test bearing is fixed on the test axle, the test axle is connected on the end face of transmission shaft, make the inner ring of test bearing do the rotation consistent with the actual condition rotating speed by transmission shaft, required rotating speed when coming warranty test.
Described axially, the axial loading structure in the radial loaded mechanism comprises axial load cylinder, the axial load bar that is connected with axial load cylinder; Described axial load bar contacts with the test bearing gland to be realized axially loading; Described radial loaded structure comprises radial loaded oil cylinder, the spherical plain bearing rod end that is connected with the radial loaded oil cylinder; Described spherical plain bearing rod end loads the outer loading fork that puts and is connected the realization radial loaded with being connected to; Described axial load cylinder, radial loaded oil cylinder are fixed on the lathe bed of testing machine and adjustable position.
The set lubricant passage way that is used for the heating arrangement that test bearing heats is connected on test bearing, in order to the heating that realizes test bearing with lubricated.
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 utility model 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, when 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 being connected on heating arrangement on the test bearing lubricant passage way, and be ejected into the actual condition that simulates the aeromotor main shaft bearing on the test bearing by lubricating system and test; Outside the test bearing outer ring loads, put and place vibration and temperature sensor, temperature sensor contacts with the test bearing outer ring, acquisition test bearing floor data at the trial, the signal datas such as the temperature that gathers, vibration are sent to computing machine, analyze judgement by computing machine, make diagnosis, have the really and accurately characteristics that detect.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of cantilever supporting mechanism in the utility model.
Fig. 3 is the structural representation of gear train in the utility model.
Fig. 4 is structural representation axial in the utility model, radial loaded mechanism.
Among the 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, the test bearing gland, 13, set nut, 14, load overcoat, 15, test bearing, 16, axial load bar, the 17, first pressure transducer, 18, axial load cylinder, 19, weak current box, 20, spherical plain bearing rod end, the 21, second pressure transducer, 22, radial loaded oil cylinder, 23, heating arrangement.
Embodiment
With specific embodiment the utility model 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 test bearing 15 cantilever supporting mechanism, 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 be used for the heating arrangement 23 that test bearing is heated and detect harvester; Described cantilever supporting mechanism is used for test bearing 15 location and makes test bearing 15 cantilever structures be positioned at an end of test axle 11, and consisting of between the inside and outside circle of test bearing 15 can counterrotating structure; The electric main shaft 2 that driving mechanism has links to each other with transmission shaft 5 in the gear train, and described transmission shaft 5 links to each other with the test axle 11 of test bearing 15, consists of 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 is used for the high-revolving test of low load of test bearing, and the diameter range that is used for test bearing is the following bearing of 100mm; The range of speeds is the above test bearing of 25000rpm; Another kind of transmission shaft is used for the slow-revving test of top load of test bearing, the bearing that the diameter range 100mm of test bearing is above; The range of speeds range of speeds is below the 25000rpm.
Described test mechanism is two groups, and wherein the transmission shaft of battery of tests mechanism is used for the following bearing of diameter range 100mm of test bearing; The range of speeds range of speeds is more than the 25000rpm; The transmission shaft of another group test mechanism of needed slow-speed of revolution top load is fixed sturcture when being used for satisfying bearing test, and the diameter range that is used for test bearing is the above bearing of 100mm; The range of speeds is that 25000rpm is with the test of 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 the set nut 13 on the 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 the test bearing by spring bearing 10; Described test bearing 15 is installed in and loads in the overcoat 14, and is compressed by test bearing gland 12, thereby consists of the cantilever structure of test bearing and make the inner ring of test bearing with the structure of electric main shaft 2 rotations.
In conjunction with Fig. 3, the motor of described driving mechanism is given electric main shaft 2 with transmission of power, and described electric main shaft 2 is connected with transmission shaft 5 by tightrope, thereby rotating speed is passed to transmission shaft 5, and is rotated by the inner ring of transmission shaft motoring ring test bearing; In conjunction with Fig. 4, described axially, the axial loading structure in the radial loaded mechanism comprises axial load cylinder, the axial load bar 18 that is connected with axial load cylinder; Axial load is that the bulb load bar 16 by axial load cylinder 18 pushing piston rod ends contacts to realize with the gland 12 of test bearing, and the loading center also is on the center line of test axle; Described radial loaded structure comprises radial loaded oil cylinder 22, the spherical plain bearing rod end 20 that is connected with radial loaded oil cylinder 22, radial load is to produce pulling force by radial loaded oil cylinder 22 pistons pulling radial loaded fork to loading overcoat 14, thereby realization radial loaded, radial loaded is perpendicular to the axis of test axle, and the loading center is also consistent with the center of test; Described axial load cylinder 18, radial loaded oil cylinder 22 are fixed on the lathe bed 1 of testing machine and adjustable position, namely axial and radial loaded oil cylinder all is fixed on and loads on the tripod, loading tripod is connected with the T-shaped bolt of being connected to of lathe bed, have rectangular T-shaped hole at lathe bed, be convenient to the axial and radial loaded position adjustments to the different model test bearing, guarantee the precision that loads; The set lubricant passage way that is used for the heating arrangement that test bearing heats is connected on test bearing, in order to the heating that realizes test bearing with lubricated; The loading that set temperature sensor is positioned at the non-rotating outer ring of test bearing puts, and directly contacts with the 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 the end that cantilevered is supported on transmission shaft 5, being about to test bearing 15 is installed in the loading overcoat 14, the inner ring of test bearing 15 is fixed on the test axle 11, test axle 11 is connected on the end face of transmission shaft 5, consists of the cantilever structure of test bearing 15; Make the inner ring of test bearing do the rotation consistent with the actual condition rotating speed by transmission shaft 5, required rotating speed when coming 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 that is connected on the axial load cylinder 18 with test bearing gland 12; And axially between load cylinder 18 and the axial load bar 16 the first pressure transducer 17 is being set; The radial load that test bearing is loaded be by radial loaded oil cylinder 22, by be connected on the radial loaded oil cylinder 22 spherical plain bearing rod end 20 be connected to the loading that loads on the overcoat 14 and pitch and be connected realization; Described axial load cylinder 18, radial loaded oil cylinder 22 are fixed on the lathe bed 1 of testing machine and adjustable position, thus will axially load load, radial loaded load on to the loading of test bearing 15 in the heart; The heating arrangement 23 that heats 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 the heating arrangement, lubricating oil after the heating is injected on the test bearing, realizes that the heating of test bearing is with lubricated; The temperature sensor that puts outward by the loading that is arranged on the non-rotating outer ring of test bearing, the temperature signal of acquisition test bearing, the vibration transducer that puts outward by the loading that is arranged on 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 tested, the axial load that applies, radial load and temperature signal, vibration signal when this operating condition of test are delivered to computing machine, the actual state of test bearing when testing detected, judge according to its test routine program software by computing machine.

Claims (5)

1. aircraft engine spindle bearing testing machine, the test mechanism that described spindle bearing testing machine has mainly comprise test bearing (15) cantilever supporting mechanism, 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 being used for heating arrangement (23) and detection harvester that test bearing (15) is heated; Described cantilever supporting mechanism is used for test bearing (15) is located and made the test bearing cantilever structure be positioned at an end of test axle (11), and consisting of between the inside and outside circle of test bearing (15) can counterrotating structure; The electric main shaft (2) that driving mechanism has links to each other with transmission shaft (5) in the gear train, described transmission shaft (5) links to each other with the test axle of test bearing (15), consists of 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, and wherein a kind of transmission shaft is used for the high-revolving test of low load of test bearing, is used for the following bearing of diameter range 100mm of test bearing; The range of speeds is more than the 25000rpm; The another kind of transmission shaft of needed slow-speed of revolution top load is fixed sturcture when being used for satisfying bearing test, and the diameter range that is used for test bearing is the above bearing of 100mm, and the range of speeds is that 25000rpm is with lower bearing.
2. aircraft engine spindle bearing testing machine according to claim 1, it is characterized in that: the end at described transmission shaft (5) is provided with the test bearing (15) that is cantilever structure, being about to test bearing (15) is installed in the loading overcoat (14), the inner ring of test bearing (15) is fixed on the 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 the actual condition rotating speed by transmission shaft (5), required rotating speed when coming warranty test.
3. aircraft engine spindle bearing testing machine according to claim 1 is characterized in that: described axially, the axial loading structure in the radial loaded mechanism comprises axial load cylinder (18), the axial load bar (16) that is connected with axial load cylinder (18); Described axial load bar (16) contacts with test bearing gland (12) to be realized axially loading; Described radial loaded structure comprises radial loaded oil cylinder (22), the spherical plain bearing rod end (20) that is connected with radial loaded oil cylinder (22); Described spherical plain bearing rod end (20) is pitched to be connected with the loading on being connected to loading overcoat (14) and is realized radial loaded; Described axial load cylinder, radial loaded oil cylinder are fixed on the lathe bed of testing machine and adjustable position.
4. aircraft engine spindle bearing testing machine according to claim 1, it is characterized in that: the set lubricant passage way that is used for the heating arrangement (23) that test bearing heats is connected on test bearing, in order to the heating that realizes test bearing with lubricated.
5. aircraft engine spindle bearing testing machine according to claim 1, it 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.
CN 201120578531 2011-12-31 2011-12-31 Aeroengine main shaft bearing testing machine Withdrawn - After Issue CN202886099U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201120578531 CN202886099U (en) 2011-12-31 2011-12-31 Aeroengine main shaft bearing testing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201120578531 CN202886099U (en) 2011-12-31 2011-12-31 Aeroengine main shaft bearing testing machine

Publications (1)

Publication Number Publication Date
CN202886099U true CN202886099U (en) 2013-04-17

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Application Number Title Priority Date Filing Date
CN 201120578531 Withdrawn - After Issue CN202886099U (en) 2011-12-31 2011-12-31 Aeroengine main shaft bearing testing machine

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CN (1) CN202886099U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102564764A (en) * 2011-12-31 2012-07-11 洛阳工铭机电设备有限公司 Aircraft engine spindle bearing testing machine
CN109855870A (en) * 2018-12-30 2019-06-07 洛阳轴承研究所有限公司 A kind of bearing test device
CN110987429A (en) * 2019-12-09 2020-04-10 西安工业大学 Low-speed helicopter bearing test device
CN112577741A (en) * 2020-12-28 2021-03-30 中国航发哈尔滨轴承有限公司 Cantilever bearing tester

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102564764A (en) * 2011-12-31 2012-07-11 洛阳工铭机电设备有限公司 Aircraft engine spindle bearing testing machine
CN102564764B (en) * 2011-12-31 2014-10-29 洛阳工铭机电设备有限公司 Aircraft engine spindle bearing testing machine
CN109855870A (en) * 2018-12-30 2019-06-07 洛阳轴承研究所有限公司 A kind of bearing test device
CN110987429A (en) * 2019-12-09 2020-04-10 西安工业大学 Low-speed helicopter bearing test device
CN110987429B (en) * 2019-12-09 2021-07-27 西安工业大学 Low-speed helicopter bearing test device
CN112577741A (en) * 2020-12-28 2021-03-30 中国航发哈尔滨轴承有限公司 Cantilever bearing tester

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20130417

Effective date of abandoning: 20141029

RGAV Abandon patent right to avoid regrant