CN105424476A - Double-shaft rotating loading detecting device for rod end knuckle bearing - Google Patents

Double-shaft rotating loading detecting device for rod end knuckle bearing Download PDF

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Publication number
CN105424476A
CN105424476A CN201510754003.9A CN201510754003A CN105424476A CN 105424476 A CN105424476 A CN 105424476A CN 201510754003 A CN201510754003 A CN 201510754003A CN 105424476 A CN105424476 A CN 105424476A
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China
Prior art keywords
spherical plain
rod
plain bearing
bearing
loads
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Granted
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CN201510754003.9A
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CN105424476B (en
Inventor
刘红艳
何攀
杨杰
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China Helicopter Research and Development Institute
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China Helicopter Research and Development Institute
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00Testing of machine parts
    • G01M13/04Bearings

Abstract

The invention provides a double-shaft rotating loading detecting device for a rod end knuckle bearing, and belongs to the field of rod end knuckle bearing experiments. The device comprises a Z-direction rotating loading detecting system, an X-direction rotating loading detecting system and a tension and pressure loading detecting system. The rotating loading detecting systems in the two directions drive a connecting piece arranged on the rod end knuckle bearing to do swing motion through a crank oscillating bar mechanism, and therefore double-shaft rotating loading experiments can be carried out on the rod end knuckle bearing at the same time. Meanwhile, the X-direction rotating loading detecting system and the tension and pressure loading detecting system act on the end of the rod end knuckle bearing together, tension and pressure are isolated from twisting force through an intermediate conversion assembly, and double-shaft rotating and tension and pressure experiment loads are loaded at the same time. Double-shaft friction torque, radial internal clearances and the like are detected through testing devices and temperature and displacement sensor assemblies arranged on the X-direction rotating loading detecting system and the Z-direction rotating loading detecting system, and the aim of checking the service life and reliability of the rod end knuckle bearing is achieved.

Description

A kind of spherical plain bearing rod end dual-axis rotation loads pick-up unit
Technical field
The invention belongs to aviation high speed light loading rod end self-lubricating knuckle bearing permanance certification test technology, be specifically related to a kind of spherical plain bearing rod end dual-axis rotation and load pick-up unit.
Background technology
Spherical plain bearing rod end has at aerospace field and uses comparatively widely, and use status and important, be the important load bearing component of lifting airscrew structure, subject and wave shimmy motive power of Denging, therefore requirement has high reliability and long-life.Under high speed light loading operating mode, spherical plain bearing rod end is around single shaft or Multi-axle oscillating, and substantial radial load, friction torque, friction temperature, wear extent are important performance indexes of oscillating bearing.
For aviation high speed light loading spherical plain bearing rod end common technology research project, need load spherical plain bearing rod end dual-axis rotation and detect, described dual-axis rotation loads and detects the axis (Z-direction) referred to along spherical plain bearing rod end and rotate to load and to detect and radial direction (X to) along spherical plain bearing rod end rotates to load and detects.Obtain friction torque, friction temperature, the wearing character of spherical plain bearing rod end, for determining that spherical plain bearing rod end provides foundation serviceable life, also needing that pressure is carried out to spherical plain bearing rod end simultaneously and loading detection.In prior art, the device that dual-axis rotation loads detection and pressure loading detection is not carried out simultaneously to spherical plain bearing rod end.
For this reason, need to design special dual-axis rotation and load pick-up unit, dual-axis rotation the friction torque of on-line checkingi spherical plain bearing rod end, friction temperature and wear extent while loading, weigh serviceable life and the reliability of spherical plain bearing rod end with this.
Summary of the invention
In order to solve the problem, the invention provides a kind of spherical plain bearing rod end dual-axis rotation and load pick-up unit, the stress during installation of simulation spherical plain bearing rod end, testing table is stablized, the parameters such as the friction torque of spherical plain bearing rod end on-line checkingi spherical plain bearing rod end while dual-axis rotation also loads, friction temperature and wear extent can be made, reach the object of examination spherical plain bearing rod end serviceable life and reliability.
Spherical plain bearing rod end dual-axis rotation provided by the invention loads pick-up unit, comprise and be arranged on chucking appliance system on Z-direction worktable and Z-direction and rotate and load detection system, described chucking appliance system is used for carrying out installation to described spherical plain bearing rod end to be fixed, described Z-direction rotates loading detection system one end and connects described chucking appliance system, the other end connects Z-direction crank-rocker mechanism, and drives it to swing by Z-direction crank-rocker mechanism;
Be arranged on X and load detection system and pressure loading detection system to the X on worktable to rotation, pressure loads the end that detection system one end connects described spherical plain bearing rod end, and connect described X to rotating the fork loading detection system at this end, described X loads detection system to rotation and also comprises X to crank-rocker mechanism, described X connects described fork to crank-rocker mechanism, and drive described fork to swing
Wherein, described Z-direction worktable and described X in the same plane to worktable, the axial-rotation of described spherical plain bearing rod end loads test side and is positioned on described Z-direction worktable, and clamped by described chucking appliance system, the radial rotary of described spherical plain bearing rod end loads test side and pressure loading test side and is positioned at described X on worktable.
Preferably, described chucking appliance system comprises left bearing bearing and right bearing bearing, described Z-direction worktable is provided with the first slide rail, and described left bearing bearing and right bearing bearing can slide on described first slide rail, and suitable with described spherical plain bearing rod end by key location.
In such scheme preferably, described left bearing bearing and right bearing bearing are provided with through hole, and are bolted on described slide rail.
In such scheme preferably, described Z-direction rotates loading detection system and also comprises governor motion, described governor motion comprises the Z-direction slide unit of connecting crank swing-bar mechanism, and being arranged on the second slide rail of the confession Z-direction slide unit motion on Z-direction worktable, the described Z-direction slide unit other end connects the first stepper motor.
In such scheme preferably, described X loads detection system to rotation and also comprises governor motion, described governor motion comprises the X of connecting crank swing-bar mechanism to slide unit, and being arranged on X to the 3rd slide rail moved to slide unit for X on worktable, described X connects the second stepper motor to the slide unit other end.
, described Z-direction rotates to load in detection system and is provided with Z-direction torque sensor and Z-direction angular encoder in such scheme preferably, and described X loads to rotation and detection system is provided with X to torque sensor and X to angular encoder.
In such scheme preferably, described pressure loading system is provided with intermediate conversion assembly, radial loaded axle system and axis of swing system, fork described in described swing coupling of shaft system, and rotate with the swing of fork, described intermediate conversion assembly is arranged between described radial loaded axle system and axis of swing system, and described intermediate conversion assembly is connected with described axis of swing system bearing.
In such scheme preferably, described spherical plain bearing rod end dual-axis rotation loads pick-up unit and also comprises temperature movement sensor module, and described temperature movement sensor module comprises:
Guide rod, described guide rod contacts described spherical plain bearing rod end, and is arranged on bearing seat;
Temperature sensor, is arranged on the one end of guide rod being abutted against described spherical plain bearing rod end;
Bearing seat, is connected on Z-direction worktable by spring, and can to the end motion contacted with spherical plain bearing rod end near guide rod under the tensile force of spring;
Displacement transducer, is arranged on described guide rod.
Beneficial effect of the present invention: break through and make spherical plain bearing rod end load around dual-axis rotation and detect the technical barrier of each parameter, by device by spherical plain bearing rod end around radial and axial rotation, and radially load pressure, detect the radial load value that twin shaft friction torque, dual-axis swing angle, friction temperature, end-play and bearing bear simultaneously, reach the object of examination rod end joint serviceable life and reliability.
Accompanying drawing explanation
Fig. 1 is the structural representation that spherical plain bearing rod end dual-axis rotation of the present invention loads a preferred embodiment of pick-up unit.
Wherein, 00 is spherical plain bearing rod end, and 10 is Z-direction worktable, and 20 is that X is to worktable, 1a is left bearing bearing, 1b is temperature movement sensor module, and 1c is right bearing bearing, and 1d is Z-direction torque sensor, 1e is Z-direction angular encoder, 1f is Z-direction crank-rocker mechanism, and 1g is Z-direction slide unit, and 2a is that X is to crank-rocker mechanism, 2b is that X is to torque sensor, 2c be X to slide unit, 2d be X to angular encoder, 2e is axis of swing system, 3a is intermediate conversion assembly, 3b is radial loaded axle system, and 3c is pull pressure sensor, and 3d is electric cylinder.
Embodiment
For making object of the invention process, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Described embodiment is the present invention's part embodiment, instead of whole embodiments.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.Below in conjunction with accompanying drawing, embodiments of the invention are described in detail.
In describing the invention; it will be appreciated that; term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward " etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limiting the scope of the invention.
Below by embodiment, the present invention is described in further details.As shown in Figure 1, the invention provides a kind of spherical plain bearing rod end dual-axis rotation and load pick-up unit, the stress during installation of simulation spherical plain bearing rod end, testing table is stablized, the parameters such as the friction torque of spherical plain bearing rod end on-line checkingi spherical plain bearing rod end while dual-axis rotation also loads, friction temperature and wear extent can be made, reach the object of examination spherical plain bearing rod end serviceable life and reliability.
Spherical plain bearing rod end dual-axis rotation provided by the invention loads pick-up unit, comprise the chucking appliance system and the Z-direction rotation loading detection system that are arranged on Z-direction worktable 10, described chucking appliance system is used for carrying out installation to described spherical plain bearing rod end to be fixed, described Z-direction rotates loading detection system one end and connects described chucking appliance system, the other end connects Z-direction crank-rocker mechanism 1f, and drive Z-direction to rotate the swing of loading detection system by Z-direction crank-rocker mechanism 1f, and then chucking appliance system is driven to do rotation test to spherical plain bearing rod end 00;
Be arranged on X and load detection system and pressure loading detection system to the X on worktable 20 to rotation, pressure loads the end that detection system one end connects described spherical plain bearing rod end, and connect described X to rotating the fork loading detection system at this end, described X loads detection system to rotation and also comprises X to crank-rocker mechanism 2a, described X connects described fork to crank-rocker mechanism 2a, and drive described fork to swing
Wherein, described Z-direction worktable 10 is in the same plane to worktable 20 with described X, the axial-rotation of described spherical plain bearing rod end 00 loads test side and is positioned on described Z-direction worktable 10, and clamped by described chucking appliance system, the radial rotary of described spherical plain bearing rod end 00 loads test side and pressure loading test side and is positioned at described X on worktable 20, with reference to figure 1, concrete, spherical plain bearing rod end 00 body is positioned on Z-direction worktable 10, Z-direction worktable 10 is stretched out in its end, extension is supported to worktable 20 by X, and other load applying device is set on worktable 20 at X.
In the present embodiment, described chucking appliance system comprises left bearing bearing 1a and right bearing bearing 1c, left bearing bearing 1a and right bearing bearing 1c can be merged into one piece, and clamp described spherical plain bearing rod end 00, therefore, need to arrange a slide rail to slide for above-mentioned two bearing spiders, in the present embodiment, position on described Z-direction worktable residing for spherical plain bearing rod end 00 is provided with the first slide rail, described left bearing bearing 1a and right bearing bearing 1c can slide on described first slide rail, and it is suitable with described spherical plain bearing rod end by key location, be understandable that, here key location refer to by left bearing bearing 1a and right bearing bearing 1c with the clearance fit of described spherical plain bearing rod end 00, described spherical plain bearing rod end 00 can not be rotated and the movement in other direction relative to left bearing bearing 1a and right bearing bearing 1c.
After spherical plain bearing rod end 00 is clamped, described left bearing bearing 1a and right bearing bearing 1c is provided with through hole, and being bolted on described slide rail, described bolt is T-slot bolt, and bearing spider can slide along the T-slot of the axis of spherical plain bearing rod end 00 and adjust position.
In the present embodiment, described Z-direction rotates loading detection system and also comprises governor motion, described governor motion comprises the Z-direction slide unit 1g connecting Z-direction crank-rocker mechanism 1f, and being arranged on the second slide rail of the confession Z-direction slide unit 1g motion on Z-direction worktable, the described Z-direction slide unit 1g other end connects the first stepper motor.Be understandable that, described Z-direction slide unit 1g is actually a rotatable web member, this web member connects the crank of the first stepper motor and crank-rocker mechanism, by the first stepping driven by motor, it rotates, and then drive the crank of crank-rocker mechanism, move reciprocatingly from making the connecting rod of crank-rocker mechanism.In the present embodiment, why be called slide unit, be because it can also move on slide rail, and then the eccentric throw of crank-rocker mechanism can be regulated, realize Z-direction pivot angle size continuously adjustabe.
In like manner, described X loads detection system to rotation and also comprises a governor motion, described governor motion comprises the X of connecting crank swing-bar mechanism to slide unit 2c, and be arranged on X to the 3rd slide rail moved to slide unit 2c for X on worktable 20, described X connects the second stepper motor to the slide unit 2c other end, the functional similarity of described second stepper motor and above-mentioned first stepper motor, all drive the connecting rod of crank-rocker mechanism to move reciprocatingly, X is identical with above-mentioned Z-direction slide unit 1g function to slide unit 2c, in order to meet the continuously adjustabe of X to pivot angle size.
In the present embodiment, described Z-direction rotates to load in detection system and is provided with Z-direction torque sensor 1d and Z-direction angular encoder 1e, described X loads in detection system to rotation and is provided with X to torque sensor 2b and X to angular encoder 2d, realize loading the axial-rotation of spherical plain bearing rod end 00 detecting by Z-direction torque sensor 1d, Z-direction angular encoder 1, realize loading the radial rotary of spherical plain bearing rod end 00 detecting to torque sensor 2b, X to angular encoder 2d by X.
This enforcement is except the applying of two spin load, also comprise the applying of Tensile or Compressive Loading, concrete, by being arranged on X on worktable, load detection system pressure in parallel with described X load detection system to rotating, with reference to figure 1, one end of pressure loading detection system is connected to the end of described spherical plain bearing rod end 00 by web member, here web member is specially intermediate conversion assembly 3a, it is in parallel that intermediate conversion assembly 3a loads detection system by axis of swing system 2e and X to rotation in the side of the end near spherical plain bearing rod end 00, one piece is connected to the end of spherical plain bearing rod end 00 afterwards, the other end of intermediate conversion assembly 3a is connected to radial loaded axle system 3b, axis of swing system 2e is made under the effect rotating loading detection system, to keep torque characteristic at X, and radial loaded axle system 3b only possesses tension and compression characteristic under pressure loads detection system effect, and can not reverse with axis of swing system 2e, in order to achieve the above object, intermediate conversion assembly 3a will be connected with axis of swing system 2e bearing, or intermediate conversion assembly 3a will be connected with radial loaded axle system 3b bearing, or intermediate conversion assembly 3a is connected with above-mentioned two equal bearings of axle system.
In the present embodiment, radial loaded axle system 3b and X is coupled together to axis of swing system 2e by intermediate conversion assembly 3a by radial loaded system (namely pressure loads detection system) on the one hand, and isolate X to swing be delivered on radial loaded axle system 3b, on the other hand, connect pull pressure sensor 3c by electric cylinder 3d, by radial loaded axle system 3b, radial loaded and load on-line checkingi are realized to spherical plain bearing rod end.
In addition, in the present embodiment, described spherical plain bearing rod end dual-axis rotation loads pick-up unit and also comprises temperature movement sensor module 1b, and described temperature movement sensor module 1b comprises:
Guide rod, described guide rod contacts described spherical plain bearing rod end 00, and is arranged on bearing seat;
Temperature sensor, is arranged on the one end of guide rod being abutted against described spherical plain bearing rod end;
Bearing seat, is connected on Z-direction worktable by spring, and can to the end motion contacted with spherical plain bearing rod end near guide rod under the tensile force of spring;
Displacement transducer, is arranged on described guide rod.
It should be noted that, bearing seat, be connected on Z-direction worktable by spring, maintenance contacts with the end surface of spherical plain bearing rod end 00 by such Z-direction worktable, certainly, needs to be arranged with slide rail for its motion at bearing seat, like this, when spherical plain bearing rod end 00 is out of shape through overtesting, bearing seat will drive displacement transducer motion indirectly mounted thereto, and then measures the end-play of spherical plain bearing rod end 00.Meanwhile, the temperature sensor pressing close to spherical plain bearing rod end 00 end surface also can record the temperature of spherical plain bearing rod end 00, in real time for Data support is done in follow-up test.In the present embodiment, by the temperature movement sensor module 1b arranged on Z-direction worktable 10, achieve the on-line checkingi of friction temperature to spherical plain bearing rod end 00 and end-play.
Beneficial effect of the present invention is to break through and makes spherical plain bearing rod end load around dual-axis rotation and detect the technical barrier of each parameter, by device by spherical plain bearing rod end around radial and axial rotation, and radially load pressure, detect the radial load value that twin shaft friction torque, dual-axis swing angle, friction temperature, end-play and bearing bear simultaneously, reach the object of examination rod end joint serviceable life and reliability.
Finally it is to be noted: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit.Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (8)

1. spherical plain bearing rod end dual-axis rotation loads a pick-up unit, it is characterized in that, comprising:
Be arranged on the chucking appliance system on Z-direction worktable (10) and Z-direction rotation loading detection system, described chucking appliance system is used for carrying out installation to described spherical plain bearing rod end to be fixed, described Z-direction rotates loading detection system one end and connects described chucking appliance system, the other end connects Z-direction crank-rocker mechanism (1f), and drives it to swing by Z-direction crank-rocker mechanism (1f);
Be arranged on X and load detection system and pressure loading detection system to the X on worktable (20) to rotation, pressure loads the end that detection system one end connects described spherical plain bearing rod end, and connect described X to rotating the fork loading detection system at this end, described X loads detection system to rotation and also comprises X to crank-rocker mechanism (2a), described X connects described fork to crank-rocker mechanism (2a), and drive described fork to swing
Wherein, described Z-direction worktable (10) is in the same plane to worktable (20) with described X, the axial-rotation of described spherical plain bearing rod end loads test side and is positioned on described Z-direction worktable (10), and clamped by described chucking appliance system, the radial rotary of described spherical plain bearing rod end loads test side and pressure loading test side and is positioned at described X on worktable (20).
2. spherical plain bearing rod end dual-axis rotation as claimed in claim 1 loads pick-up unit, it is characterized in that: described chucking appliance system comprises left bearing bearing (1a) and right bearing bearing (1c), described Z-direction worktable (10) is provided with the first slide rail, described left bearing bearing (1a) and right bearing bearing (1c) can slide on described first slide rail, and suitable with described spherical plain bearing rod end by key location.
3. spherical plain bearing rod end dual-axis rotation as claimed in claim 2 loads pick-up unit, it is characterized in that: described left bearing bearing (1a) and right bearing bearing (1c) are provided with through hole, and are bolted on described slide rail.
4. spherical plain bearing rod end dual-axis rotation as claimed in claim 1 loads pick-up unit, it is characterized in that: described Z-direction rotates loading detection system and also comprises governor motion, described governor motion comprises the Z-direction slide unit (1g) of connecting crank swing-bar mechanism, and being arranged on the second slide rail of the confession Z-direction slide unit motion on Z-direction worktable (10), the described Z-direction slide unit other end connects the first stepper motor.
5. spherical plain bearing rod end dual-axis rotation as claimed in claim 1 loads pick-up unit, it is characterized in that: described X loads detection system to rotation and also comprises governor motion, described governor motion comprises the X of connecting crank swing-bar mechanism to slide unit (2c), and being arranged on X to the 3rd slide rail moved to slide unit for X on worktable (20), described X connects the second stepper motor to the slide unit other end.
6. spherical plain bearing rod end dual-axis rotation as claimed in claim 1 loads pick-up unit, it is characterized in that: described Z-direction rotates to load in detection system and is provided with Z-direction torque sensor (1d) and Z-direction angular encoder (1e), described X loads to rotation and detection system is provided with X to torque sensor (2b) and X to angular encoder (2d).
7. spherical plain bearing rod end dual-axis rotation as claimed in claim 1 loads pick-up unit, it is characterized in that: described pressure loading system is provided with intermediate conversion assembly (3a), radial loaded axle system (3b) and axis of swing system (2e), described axis of swing system (2e) connects described fork, and rotate with the swing of fork, described intermediate conversion assembly (3a) is arranged between described radial loaded axle system (3b) and axis of swing system (2e), and described intermediate conversion assembly (3a) is connected with described axis of swing system (2e) bearing.
8. spherical plain bearing rod end dual-axis rotation as claimed in claim 1 loads pick-up unit, it is characterized in that: described spherical plain bearing rod end dual-axis rotation loads pick-up unit and also comprises temperature movement sensor module (1b), and described temperature movement sensor module (1b) comprising:
Guide rod, described guide rod contacts described spherical plain bearing rod end, and is arranged on bearing seat;
Temperature sensor, is arranged on the one end of guide rod being abutted against described spherical plain bearing rod end;
Bearing seat, is connected on Z-direction worktable (10) by spring, and can to the end motion contacted with spherical plain bearing rod end near guide rod under the tensile force of spring;
Displacement transducer, is arranged on described guide rod.
CN201510754003.9A 2015-11-04 2015-11-04 A kind of spherical plain bearing rod end dual-axis rotation load detection device Active CN105424476B (en)

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CN106123834A (en) * 2016-08-11 2016-11-16 宁波慈兴精密传动科技有限公司 A kind of double inner ring angular contact ball bearing end-play detection device
CN106644477A (en) * 2016-12-19 2017-05-10 兰州空间技术物理研究所 Radial joint bearing running-in device
CN106840076A (en) * 2017-01-25 2017-06-13 黑龙江科技大学 A kind of bearing clearance and friction torque comprehensive tester
CN106950104A (en) * 2017-03-10 2017-07-14 哈尔滨工业大学 A kind of combined horizontal testing stand and its material performance test method and system
CN107560852A (en) * 2017-09-01 2018-01-09 西北工业大学 Oscillating bearing pilot system
CN107727520A (en) * 2017-09-12 2018-02-23 合肥通用机械研究院 A kind of Multiaxial Non-proportional fatigue test system based on centrifugation loading
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CN109839273A (en) * 2019-04-09 2019-06-04 中国航空综合技术研究所 Rod end bearing limiting temperature test fixture and its test method
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CN110726555A (en) * 2019-11-11 2020-01-24 清华大学 Low-temperature large-temperature-variation joint bearing test platform and joint bearing measuring method
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CN105806620B (en) * 2016-05-09 2018-04-17 青岛科技大学 A kind of radial direction adding pressure type bearing running testing stand
CN105806620A (en) * 2016-05-09 2016-07-27 青岛科技大学 Radial pressurization type bearing running-in test stand
CN106123834A (en) * 2016-08-11 2016-11-16 宁波慈兴精密传动科技有限公司 A kind of double inner ring angular contact ball bearing end-play detection device
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