CN104568443A - Space rolling bearing comprehensive performance experiment device - Google Patents
Space rolling bearing comprehensive performance experiment device Download PDFInfo
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- CN104568443A CN104568443A CN201510041974.9A CN201510041974A CN104568443A CN 104568443 A CN104568443 A CN 104568443A CN 201510041974 A CN201510041974 A CN 201510041974A CN 104568443 A CN104568443 A CN 104568443A
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Abstract
The invention discloses a space rolling bearing comprehensive performance experiment device, relates to an experiment device and provides an experiment device capable of accurately measuring axial and redial united loads of a space rolling bearing and basic data including friction moment, bearing temperature rise, vibration and the like under different rotation speed working conditions. The space rolling bearing comprehensive performance experiment device can simultaneously conduct axial force and radial force accurate load on a measured bearing through an axial loading device and a radial loading device. A three-axis acceleration sensor is used for measuring radial, axial and peripheral vibration situations of the measured bearing. A temperature sensor is used for measuring the temperature rise situation of the measured bearing. A pressure sensor is used for measuring the friction moment of the measured bearing. An annular pressure sensor is used for measuring axial force borne by the measured bearing. Weights are used for marking radial force borne by the measured bearing. The space rolling bearing comprehensive performance experiment device can evaluate the comprehensive performance of the space rolling bearing and provide key scientific technical basis and test platform support for development of high-end bearings in the aerospace field of our country.
Description
Technical field
The present invention relates to a kind of experimental facilities, particularly relate to the comprehensive performance detection experimental device of rolling bearing under a kind of space condition.
Background technology
Bearing is the supporting and necessary key component of maintenance of aerospace industry, with the development of aerospace industry and technical progress closely related.The technical merit of bearing, the quality of Performance and quality directly affect function life-span and the reliability of the aerospace flight vehicles such as aircraft, rocket, satellite.Space Rolling Bearing, compared with civilian bearing, all has very harsh requirement in precision, speed, sensitivity, life-span, reliability, temperature, vacuum tightness, burn into radiation etc.For meeting these requirements, corresponding technical measures must be taked at the everyway such as design, selection, processing, detection, test, lubrication, use, maintenance of bearing.Therefore, invent a kind of Space Rolling Bearing comprehensive characteristic test platform, grasp the dynamic military service behavior of Space Rolling Bearing exactly, set up bearings synthesis performance database, have important scientific meaning and engineering practical value to the technical merit improving Chinese Space rolling bearing.
Perfect not for rolling bearing all-round property testing means in prior art, not having can the experimental provision of true intactly virtual space rolling bearing actual condition, particularly do not consider axis and radial loaded simultaneously, especially cannot measure rotating speed and the load interact relation to the moment of friction of Space Rolling Bearing, temperature rise, vibration exactly, thus the rules such as Space Rolling Bearing failure mechanism, tribological property can not be grasped veritably.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of Space Rolling Bearing comprehensive characteristic test device, this experimental provision can accurately measurement space rolling bearing basic data such as moment of friction, bearing temperature rise, vibration under axial and united load and different rotating speeds operating mode, so that the combination property of evaluation space rolling bearing, for exploitation China aerospace field height end bearing provides crucial scientific and technical foundation and test platform to support.
In order to solve the problem, the technical scheme adopted is: Space Rolling Bearing comprehensive characteristic test device comprises inside and is provided with the space-environment simulator of experimental stand mounting platform and is positioned at the Space Rolling Bearing experimental stand of space-environment simulator; Space Rolling Bearing experimental stand comprises detected space rolling bearing, load bearings seat, the bearing collar, gearing, bracing or strutting arrangement, axial loading device, radial loading device and pick-up unit;
Gearing comprises vacuum high/low temperature motor and experiment main shaft, and vacuum high/low temperature motor can drive experiment main shaft to rotate;
Bracing or strutting arrangement comprises motor erection support, torque rotary speed sensor erection support and main shaft support device; Motor erection support to be arranged on experimental stand mounting platform and to support vacuum high/low temperature motor; Experiment main shaft two ends support respectively by main shaft support device, main shaft support device comprises spring bearing, spring bearing erection support and supporting bearing base end cap, the inner ring of spring bearing is arranged on experiment main shaft, spring bearing outer ring is arranged in the dead eye of supporting bearing erection support, supporting bearing base end cap is connected with supporting bearing erection support by trip bolt, the shaft shoulder common axle of supporting bearing base end cap and experiment main shaft is to positioning supports bearing, and spring bearing erection support is arranged on experimental stand mounting platform;
Detected space rolling bearing is arranged on the part Experiment main shaft between two pieces main shaft support device, and detected space rolling bearing quantity is two pieces and face-to-face or back-to-back installation; Bearing holder (housing, cover) ring set be contained in experiment main shaft on and between two pieces detected space rolling bearing;
Load bearings cover for seat is contained on detected space housing washer, load bearings seat one end is provided with positioning step, the other end connects axial loading device, load bearings seat outside surface connects radial loading device, tests the shaft shoulder of main shaft, positioning step and axial loading device common axial location detected space rolling bearing;
Axial loading device comprises the load bearings seat end cap, spring and the back-up ring that axially set gradually along experiment main shaft; Load bearings seat end cap is connected with load bearings seat and Compress Spring by the load screw of six circumference uniform distributions, and back-up ring is between spring and detected space rolling bearing;
Radial loading device comprises radial loaded dish, loads counterweight and hook, and hook is connected with load bearings seat, and radial loaded dish hangs on hook, loads counterweight and puts into radial loaded dish;
Pick-up unit comprises torque rotary speed sensor, 3-axis acceleration sensor, annular pressure sensor, temperature sensor and moment of friction pick-up unit; Torque rotary speed sensor to be arranged between vacuum high/low temperature motor and experiment main shaft and by spring coupling and vacuum high/low temperature motor with test main shaft and be connected, torque rotary speed sensor erection support support torque rotary speed sensor; 3-axis acceleration sensor is connected with load bearings; Annular pressure sensor is between detected space rolling bearing and back-up ring; Temperature sensor is connected with load bearings seat and close detected space rolling bearing; Moment of friction pick-up unit comprises transmission rod, pressure transducer and pressure transducer erection support, transmission rod is connected with load bearings seat, pressure transducer erection support is arranged on experimental stand mounting platform, and pressure transducer connects with pressure transducer erection support and contacts with transmission rod.
Further: spring bearing is bearing with solid lubricant
Further: vacuum high/low temperature motor, torque rotary speed sensor, 3-axis acceleration sensor, annular pressure sensor, temperature sensor and pressure transducer are all connected with the external world by the aviation socket be arranged on space-environment simulator.
The invention has the beneficial effects as follows: 1, Space Rolling Bearing comprehensive characteristic test device of the present invention, by axial loading device and radial loading device, can accurately load measured bearing enforcement axial force and radial force simultaneously.Axial force loads and realizes by tightening load screw, axial force is successively by back-up ring and annular pressure sensor passes to detected space rolling bearing, axial force is passed to another detected space rolling bearing by the positioning step on load bearings seat simultaneously, spring is also as buffer cell, and axial loading device can realize the precise and stable loading of measured bearing.By putting into standard test weight at radial loaded dish, realize the precise and stable loading of radial force; Load mode not only structure is simple, easy to operate, and accurately and reliably.
2, torque rotary speed sensor is for measuring measured bearing rotating speed and input torque; 3-axis acceleration sensor is for measuring measured bearing radial direction, axis, rotational vibration situation; Temperature sensor is for measuring measured bearing temperature rise situation; Pressure transducer is for measuring the moment of friction of measured bearing; Annular pressure sensor is for measuring axial force suffered by measured bearing; Counterweight is for indicating measured bearing force in radial.Therefore this experimental provision can accurately measurement space rolling bearing basic data such as moment of friction, bearing temperature rise, vibration under axial and united load and different rotating speeds operating mode, so that the combination property of evaluation space rolling bearing, for exploitation China aerospace field height end bearing provides crucial scientific and technical foundation and test platform to support.
Accompanying drawing explanation
Fig. 1 is the front view of Space Rolling Bearing comprehensive characteristic test device;
Fig. 2 is the partial enlarged drawing of Space Rolling Bearing comprehensive characteristic test device at load bearings seat place;
Fig. 3 is the partial side view of Space Rolling Bearing comprehensive characteristic test device at load bearings seat place;
Be labeled as in figure: space-environment simulator 1, vacuum high/low temperature motor 2, spring coupling 3, torque rotary speed sensor 4, aviation socket 5, supporting bearing base end cap 6, trip bolt 7, spring bearing 8, load bearings seat 9, 3-axis acceleration sensor 10, detected space rolling bearing 11, the bearing collar 12, annular pressure sensor 13, back-up ring 14, spring 15, load screw 16, load bearings seat end cap 17, experiment main shaft 18, experimental stand mounting platform 19, temperature sensor 20, spring bearing erection support 21, torque rotary speed sensor erection support 22, bracing or strutting arrangement comprises motor erection support 23, pressure transducer 24, pressure transducer erection support 25, load counterweight 26, radial loaded dish 27, transmission rod 28.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
As shown in Figure 1 to Figure 3, Space Rolling Bearing comprehensive characteristic test device comprises inside and is provided with the space-environment simulator 1 of experimental stand mounting platform 19 and is positioned at the Space Rolling Bearing experimental stand of space-environment simulator 1; Space Rolling Bearing experimental stand comprises detected space rolling bearing 11, load bearings seat 9, the bearing collar 12, gearing, bracing or strutting arrangement, axial loading device, radial loading device and pick-up unit;
Gearing comprises vacuum high/low temperature motor 2 and experiment main shaft 18, and vacuum high/low temperature motor 2 can drive experiment main shaft 18 to rotate;
Bracing or strutting arrangement comprises motor erection support 23, torque rotary speed sensor erection support 22 and main shaft support device; Motor erection support 23 to be arranged on experimental stand mounting platform 19 and to support vacuum high/low temperature motor 2; Experiment main shaft 18 two ends support respectively by main shaft support device, main shaft support device comprises spring bearing 8, spring bearing erection support 21 and supporting bearing base end cap 6, the inner ring of spring bearing 8 is arranged on experiment main shaft 18, spring bearing 8 outer ring is arranged in the dead eye of supporting bearing erection support 21, supporting bearing base end cap 6 is connected with supporting bearing erection support 21 by trip bolt 7, the shaft shoulder common axle of supporting bearing base end cap 6 and experiment main shaft 18 is to positioning supports bearing 8, and spring bearing erection support 21 is arranged on experimental stand mounting platform 19;
Detected space rolling bearing 11 is arranged on the part Experiment main shaft 18 between two pieces main shaft support device, and detected space rolling bearing 11 quantity is two pieces and face-to-face or back-to-back installation; The bearing collar 12 be sleeved on experiment main shaft 18 on and between two pieces detected space rolling bearing 11;
Load bearings seat 9 is sleeved on detected space rolling bearing 11 outer ring, load bearings seat 9 one end is provided with positioning step, the other end connects axial loading device, load bearings seat 9 outside surface connects radial loading device, tests the shaft shoulder of main shaft 18, positioning step and axial loading device common axial location detected space rolling bearing 11;
Axial loading device comprises the load bearings seat end cap 17, spring 15 and the back-up ring 14 that axially set gradually along experiment main shaft 18; Load bearings seat end cap 17 is connected with load bearings seat 9 and Compress Spring 15 by the load screw 16 of six circumference uniform distributions, and back-up ring 14 is between spring 15 and detected space rolling bearing 11;
Radial loading device comprises radial loaded dish 27, loads counterweight 26 and hook, and hook is connected with load bearings seat 9, and radial loaded dish 27 hangs on hook, loads counterweight 26 and puts into radial loaded dish 27;
Pick-up unit comprises torque rotary speed sensor 4,3-axis acceleration sensor 10, annular pressure sensor 13, temperature sensor 20 and moment of friction pick-up unit; Torque rotary speed sensor 4 to be arranged between vacuum high/low temperature motor 2 and experiment main shaft 18 and by spring coupling 3 and vacuum high/low temperature motor 2 with test main shaft 18 and be connected, torque rotary speed sensor erection support 22 supports torque rotary speed sensor 4; 3-axis acceleration sensor 10 is connected with load bearings 9; Annular pressure sensor 13 is between detected space rolling bearing 11 and back-up ring 14; Temperature sensor 20 is connected with load bearings seat 9 and close detected space rolling bearing 11; Moment of friction pick-up unit comprises transmission rod 28, pressure transducer 24 and pressure transducer erection support 25, transmission rod 28 is connected with load bearings seat 9, pressure transducer erection support 25 is arranged on experimental stand mounting platform 19, and pressure transducer 24 connects with pressure transducer erection support 25 and contacts with transmission rod 28.
Space-environment simulator 1 for space environmental simulation, the such as environment of infrabar, low temperature or high temperature.Vacuum high/low temperature motor 2 is the motor that can operate under space environment.Because operating under space environment, spring bearing 8 should be bearing with solid lubricant.Vacuum high/low temperature motor 2, torque rotary speed sensor 4,3-axis acceleration sensor 10, annular pressure sensor 13, temperature sensor 20 and pressure transducer 24 all need powered by the external world or transmit data with the external world, therefore all need to be connected with the external world.In the present invention, vacuum high/low temperature motor 2, torque rotary speed sensor 4,3-axis acceleration sensor 10, annular pressure sensor 13, temperature sensor 20 and pressure transducer 24 are all connected with the external world by the aviation socket 5 be arranged on space-environment simulator 1.
Space Rolling Bearing comprehensive characteristic test device of the present invention, by axial loading device and radial loading device, can implement axial force to detected space rolling bearing 11 and radial force accurately loads simultaneously.Axial force loads and realizes by tightening load screw 16, axial force is passed to a detected space rolling bearing 11 by back-up ring 14 and annular pressure sensor 13 successively, axial force is passed to another detected space rolling bearing 11 by the positioning step on load bearings seat 9 simultaneously, spring 15 is also as buffer cell, and axial loading device can realize the precise and stable loading of measured bearing.By putting into standard test weight 26 at radial loaded dish 27, realize the precise and stable loading of radial force; Load mode not only structure is simple, easy to operate, and accurately and reliably.
Torque rotary speed sensor 4 is for measuring detected space rolling bearing 11 rotating speed and input torque; 3-axis acceleration sensor 10 is for measuring detected space rolling bearing 11 radial direction, axis, rotational vibration situation; Temperature sensor 20 is for measuring detected space rolling bearing 11 temperature rise situation; Pressure transducer 24 is for measuring the moment of friction of detected space rolling bearing 11; Annular pressure sensor 13 is for measuring axial force suffered by measured bearing; Counterweight 26 is for indicating measured bearing force in radial.Therefore this experimental provision accurately can measure detected space rolling bearing 11 basic data such as moment of friction, bearing temperature rise, vibration under axial and united load and different rotating speeds operating mode, so that the combination property of evaluation space rolling bearing, for exploitation China aerospace field height end bearing provides crucial scientific and technical foundation and test platform to support.
The mode that the moment of friction of detected space rolling bearing 11 measured by pressure transducer 24 is: the moment of friction of detected space rolling bearing 11 is converted into friction force, friction force is passed to pressure transducer 24 place by transmission rod 28 makes transmission rod 28 give pressure transducer 24 pressure F, pressure transducer 24 records pressure F, pressure transducer 24 and detected space rolling bearing 11 centre distance are l, and the moment of friction of Space Rolling Bearing 11 can be calculated by formula M=F × l.
Claims (3)
1. Space Rolling Bearing comprehensive characteristic test device, is characterized in that: comprise inside and be provided with the space-environment simulator (1) of experimental stand mounting platform (19) and be positioned at the Space Rolling Bearing experimental stand of space-environment simulator (1); Space Rolling Bearing experimental stand comprises detected space rolling bearing (11), load bearings seat (9), the bearing collar (12), gearing, bracing or strutting arrangement, axial loading device, radial loading device and pick-up unit;
Gearing comprises vacuum high/low temperature motor (2) and experiment main shaft (18), and vacuum high/low temperature motor (2) can drive experiment main shaft (18) to rotate;
Bracing or strutting arrangement comprises motor erection support (23), torque rotary speed sensor erection support (22) and main shaft support device, motor erection support (23) is arranged on experimental stand mounting platform (19) and goes up and support vacuum high/low temperature motor (2), experiment main shaft (18) two ends support respectively by main shaft support device, main shaft support device comprises spring bearing (8), spring bearing erection support (21) and supporting bearing base end cap (6), the inner ring of spring bearing (8) is arranged in experiment main shaft (18), spring bearing (8) outer ring is arranged in the dead eye of supporting bearing erection support (21), supporting bearing base end cap (6) is connected with supporting bearing erection support (21) by trip bolt (7), the shaft shoulder common axle of supporting bearing base end cap (6) and experiment main shaft (18) is to positioning supports bearing (8), spring bearing erection support (21) is arranged on experimental stand mounting platform (19),
Detected space rolling bearing (11) is arranged on the part Experiment main shaft (18) between two pieces main shaft support device, and detected space rolling bearing (11) quantity is two pieces and face-to-face or back-to-back installation; The bearing collar (12) is sleeved on experiment main shaft (18) and goes up and be positioned between two pieces detected space rolling bearing (11);
Load bearings seat (9) is sleeved on detected space rolling bearing (11) outer ring, load bearings seat (9) one end is provided with positioning step, the other end connects axial loading device, load bearings seat (9) outside surface connects radial loading device, tests the shaft shoulder of main shaft (18), positioning step and axial loading device common axial location detected space rolling bearing (11);
Axial loading device comprises the load bearings seat end cap (17), spring (15) and the back-up ring (14) that axially set gradually along experiment main shaft (18); Load bearings seat end cap (17) is connected and Compress Spring (15) with load bearings seat (9) by the load screw (16) of six circumference uniform distributions, and back-up ring (14) is positioned between spring (15) and detected space rolling bearing (11);
Radial loading device comprises radial loaded dish (27), loads counterweight (26) and hook, hook is connected with load bearings seat (9), radial loaded dish (27) hangs on hook, loads counterweight (26) and puts into radial loaded dish (27);
Pick-up unit comprises torque rotary speed sensor (4), 3-axis acceleration sensor (10), annular pressure sensor (13), temperature sensor (20) and moment of friction pick-up unit; Torque rotary speed sensor (4) to be arranged between vacuum high/low temperature motor (2) and experiment main shaft (18) and by spring coupling (3) and vacuum high/low temperature motor (2) with test main shaft (18) and be connected, torque rotary speed sensor erection support (22) support torque rotary speed sensor (4); 3-axis acceleration sensor (10) is connected with load bearings (9); Annular pressure sensor (13) is positioned between detected space rolling bearing (11) and back-up ring (14); Temperature sensor (20) is connected with load bearings seat (9) and close detected space rolling bearing (11); Moment of friction pick-up unit comprises transmission rod (28), pressure transducer (24) and pressure transducer erection support (25), transmission rod (28) is connected with load bearings seat (9), pressure transducer erection support (25) is arranged on experimental stand mounting platform (19), and pressure transducer (24) connects with pressure transducer erection support (25) and contacts with transmission rod (28).
2. Space Rolling Bearing comprehensive characteristic test device according to claim 1, is characterized in that: spring bearing (8) is bearing with solid lubricant.
3. Space Rolling Bearing comprehensive characteristic test device according to claim 2, is characterized in that: vacuum high/low temperature motor (2), torque rotary speed sensor (4), 3-axis acceleration sensor (10), annular pressure sensor (13), temperature sensor (20) and pressure transducer (24) are all connected with the external world by the aviation socket (5) be arranged on space-environment simulator (1).
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