CN109540519A - A kind of bearing test device - Google Patents

A kind of bearing test device Download PDF

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Publication number
CN109540519A
CN109540519A CN201811370183.0A CN201811370183A CN109540519A CN 109540519 A CN109540519 A CN 109540519A CN 201811370183 A CN201811370183 A CN 201811370183A CN 109540519 A CN109540519 A CN 109540519A
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CN
China
Prior art keywords
bearing
test
support
load
bushing
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Pending
Application number
CN201811370183.0A
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Chinese (zh)
Inventor
伍继浩
苏和
吕翠
李青
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Technical Institute of Physics and Chemistry of CAS
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Technical Institute of Physics and Chemistry of CAS
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Application filed by Technical Institute of Physics and Chemistry of CAS filed Critical Technical Institute of Physics and Chemistry of CAS
Priority to CN201811370183.0A priority Critical patent/CN109540519A/en
Publication of CN109540519A publication Critical patent/CN109540519A/en
Pending legal-status Critical Current

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    • 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

A kind of bearing test device, including environmental simulation system and bearing test mechanism, the environmental simulation system includes vacuum cylinder, the bearing test mechanism is set in the vacuum cylinder body, and the environmental simulation system is used to provide the working environment of gas with various atmosphere and different pressures for the bearing test mechanism.The bearing test mechanism includes lead screw loading system, dynamometric system, test bearing loading system, transmission system and dynamical system.Above-mentioned bearing test device, different pressures can be filled in vacuum cylinder body, different types of gas forms different test environment, to be simulated to particular surroundings applied by bearing to be measured, work performance of the bearing to be measured in special gas working medium is assessed, and revolving speed, load, pressure influence for caused by the lubricating grease of bearing to be measured and bearing performance can be studied by adjusting the pressure of working environment.

Description

A kind of bearing test device
Technical field
The present invention relates to test device technical field more particularly to a kind of bearing test devices.
Background technique
With the construction of China's large scientific facilities, the relevant technologies of large-scale low-temperature system have obtained more in-depth study, Also higher technical requirements are proposed to the cryogenic compressor as core component.Currently, the bearing master that cryogenic compressor uses There are ceramic rolling bearing and magnetic suspension bearing, since the control system of magnetic suspension bearing is complex and higher cost, mixing Ceramic rolling bearing due to its structure is simple, at low cost, high rigidity and biggish axially and radially bearing capacity and obtain More applications.In cryogenic compressor, admixture ceramics bearing need negative pressure in certain temperature range, under helium atmosphere into Row high-speed rotation, while to carry certain axial load.For admixture ceramics bearing, current main lubricating system is rouge profit Sliding, oil lubrication and oil foglubrication.In order to reduce the pollution to helium gas inside working medium, cryogenic compressor ceramic bearing uses lubricating grease Lubrication.Under grease lubrication environment, the additive amount of lubricating grease has important influence to vibration, the temperature rise of ceramic bearing, good Grease lubrication can not only increase revolving speed, extend the service life of bearing, and can reduce the energy consumption of whole system.This Outside, bearing has important influence to reliability, the stability of system as main load bearing component.In order to develop stablize, can It leans on, efficient cryogenic compressor, needs a kind of admixture ceramics bearing that grease lubricating bearing performance test apparatus uses compressor Performance tested, and provide reference for further optimization design.Therefore, in order to simulate admixture ceramics bearing in low temperature pressure Actual working environment in contracting machine needs one kind that can adjust working environment pressure, can be filled with special gas working medium and provide axis To load and the adjustable bearing test equipment of revolving speed.
Currently, conventional high rate bearing test device can provide axial load for bearing and carry out rotation test, but deposit In following shortcoming:
1. for the grease lubrication admixture ceramics bearing worked under particular pressure environment, not in view of bearing grease is in spy The working performance for influencing bearing under different environmental pressure there may be volatilization loss, can not adjust the working environment of test bearing Pressure can not manufacture the bearing working environment of negative pressure or positive pressure, bearing practical work can not be simulated during bearing test The continually changing environment of pressure during work.
2. not considering bearing grease special for the grease lubrication admixture ceramics bearing worked in special gas environment Volatilization in gaseous environment is showed and is influenced caused by bearing working performance, does not consider bearing ball surface in special gas In environment it is possible that it is the case where can not forming oxide film or excessive oxidation and caused to bearing working performance Influence, special gas environment can not be manufactured around test bearing, i.e., can not inject various special gas in testing stand Body is to simulate actual working environment.
Summary of the invention
In consideration of it, a variety of special gas can be filled with it is necessary to provide a kind of bearing test device to simulate particular job ring Border, the gaseous species and gas pressure that can adjust test bearing ambient enviroment carry out rotation test.
A kind of bearing test device, including environmental simulation system and bearing test mechanism, the environmental simulation system include Vacuum cylinder, the bearing test mechanism are set in the vacuum cylinder body, and the environmental simulation system is used to try for the bearing It tests mechanism and the working environment of gas with various atmosphere and different pressures is provided;
The bearing test mechanism include lead screw loading system, dynamometric system, test bearing loading system, transmission system and Dynamical system;
The dynamometric system is connected with the lead screw loading system, and the lead screw loading system is used to provide to test bearing Axial load, the dynamometric system is for measuring axial load size;
The test bearing loading system is connected with the lead screw loading system, the test bearing loading system be used for The test bearing transmits axial load;
The dynamical system is connected with the transmission system, and the transmission system is connected with the test bearing, described dynamic Force system is rotated by test bearing described in the transmission system drives.
In one embodiment, the vacuum cylinder includes left end cap, right end cap and vaccum case;
The left end cap and the right end cap are respectively arranged on the both ends of the vaccum case;
Aeration aperture is offered on the left end cap, the aeration aperture is for being filled with special gas;
Aspirating hole is offered on the right end cap, the aspirating hole is used to vacuumize and adjust the inside of the vacuum cylinder Pressure.
In one embodiment, the vacuum cylinder further includes cooling water inlet and cooling water outlet, the cooling water into Mouth and the cooling water outlet are set on the vaccum case.
In one embodiment, the vacuum cylinder inboard wall is equipped with mobile base, and the mobile base is relative to described true Empty cylinder inboard wall is removable, and the bearing test mechanism is set in the mobile base.
In one embodiment, the lead screw loading system includes load disk, feed screw nut, lead screw and loads support, The load disk fixing sleeve is set to one end of the lead screw, and the lead screw is rotatably set in the feed screw nut, the silk Thick stick nut is fixedly connected with the load support, and the load support is set on the vacuum cylinder inboard wall.
In one embodiment, the dynamometric system includes thrust bearing, bearing base, bearing base support, locking screw Bolt, force snesor and load connector;
The thrust bearing be sheathed on the lead screw far from it is described load disk one end, the inner ring of the thrust bearing with The lead screw connection, the bearing base are sheathed on the one end of the thrust bearing far from the load disk, the thrust shaft Bearing outer-ring is connect with the bearing base, and the bearing base support is set on the vacuum cylinder inboard wall, the bearing base It is connect with the bearing base support by clearance fit, the clamping screw is connected by screw thread and the bearing base support It connects, the clamping screw is used to lock the fixing bearing pedestal after axially loaded power size determines, the force snesor is set Between the bearing base and the load connector, the force snesor is for measuring axial load size.
In one embodiment, the test bearing loading system includes axial force charging assembly, test bearing and test Bearing support end;
The axial force charging assembly is connected with the load connector, the axial force charging assembly and the test bearing Outer ring connection, axial force loads on the test axis by the outer ring of the test bearing by the axial force charging assembly It holds;
The test bearing support end is set in the test bearing, and the inner ring and test bearing of the test bearing support Hold tight fit.
In one embodiment, the test bearing loading system further includes heat patch, protects bushing and connection pedestal, The protection bushing is fixedly connected with the connection pedestal, and the heat patch is installed in the protection bushing, the heating Patch is sheathed on the outside of the test bearing, and the protection bushing is fixedly connected with the connection pedestal, the connection pedestal It is fixedly connected with the transmission system
In one embodiment, the transmission system includes accompanying examination bearing, bushing of transmission shaft, transmission shaft and support bushing block;
The support bushing block is set to the inner wall of the vacuum cylinder;
The bushing of transmission shaft is fixed on the support bushing block, and one end of the bushing of transmission shaft and connection pedestal are solid Fixed connection;
The transmission shaft is set in bushing of transmission shaft, and one end of the transmission shaft is fixedly connected with test bearing support end, The other end of the transmission shaft is connected with the dynamical system;
It is equipped between the transmission shaft and bushing of transmission shaft and accompanies examination bearing.
In one embodiment, the transmission system further includes sealing ring, driving sleeve, bearing ring and protection end cap;
The quantity for accompanying examination bearing is two pairs, accompanies examination bearing to be located at the both ends of the drive shaft described in two pairs, is driven Axle sleeve is located at two pairs and accompanies between examination bearing, and the bearing ring and the sealing ring are respectively arranged at the both ends of the drive shaft, described Protection end cap is fixedly connected with the bushing of transmission shaft far from one end of the connection pedestal by bolt.
Above-mentioned bearing test device can be filled with different pressures in vacuum cylinder body, different types of gas forms difference Test environment, to be simulated to particular surroundings applied by bearing to be measured, to bearing to be measured in special gas working medium Work performance assessed, and revolving speed, load, pressure can be studied for be measured by adjusting the pressure of working environment It is influenced caused by the lubricating grease and bearing performance of bearing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the bearing test device of an embodiment;
Fig. 2 is the structural schematic diagram of the bearing test device of an embodiment;
Fig. 3 is the structural schematic diagram of lead screw loading system shown in FIG. 1;
Fig. 4 is the structural schematic diagram of dynamometric system shown in FIG. 1;
Fig. 5 is the structural schematic diagram of test bearing loading system structure shown in FIG. 1;
Fig. 6 is the structural schematic diagram of drive system structure shown in FIG. 1;
Fig. 7 is the structural schematic diagram of dynamical system shown in FIG. 1.
Specific embodiment
In order to be more clear the objectives, technical solutions, and advantages of the present invention, with reference to the accompanying drawings and embodiments, to this hair It is bright to be further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and do not have to It is of the invention in limiting.It is described in the present invention to be fixedly connected, including be directly fixedly connected and fix indirectly.
Fig. 1 and Fig. 2 are please referred to, the present invention provides the bearing test device of an embodiment, including 3 He of environmental simulation system Bearing test mechanism.Environmental simulation system 3 includes vacuum cylinder.Bearing test mechanism is set in vacuum cylinder body.Environmental simulation system System 3 is for providing the working environment of gas with various atmosphere, different pressures for bearing test mechanism.That is environmental simulation system 3 can be with For being filled with special gas to the working environment of test bearing 403 and adjusting the working environment pressure of test bearing 403.
Bearing test mechanism includes lead screw loading system 1, dynamometric system 2, test bearing loading system 4,5 and of transmission system Dynamical system 6.
Dynamometric system 2 and lead screw loading system 1 connect, and lead screw loading system 1 is used to provide axial load to test bearing 403 Lotus, dynamometric system 2 is for measuring axial load size.
Test bearing loading system 4 and lead screw loading system 1 connect, and test bearing loading system 4 is used for test bearing 403 transmitting axial loads.
Dynamical system 6 and transmission system 5 connect, and transmission system 5 and test bearing 403 connect, and dynamical system 6 passes through transmission System 5 drives test bearing 403 to rotate.
Above-mentioned bearing test device can be filled with different pressures in vacuum cylinder body, different types of gas forms difference Test environment, to be simulated to particular surroundings applied by bearing 403 to be measured, to bearing to be measured 403 in special gas Work performance in working medium is assessed, and can study revolving speed, load, pressure pair by adjusting the pressure of working environment It is influenced caused by the lubricating grease of bearing 403 to be measured and bearing performance.
Specifically, lead screw loading system 1 is connect by the thrust bearing 201 of dynamometric system 2 with dynamometric system 2.Test axis Loading system 4 to be held to connect by screw thread with dynamometric system 2, transmission system 5 is connect by bolt with test bearing loading system 4, Dynamical system 6 is connect by shaft coupling with 5 end of transmission system.
In one embodiment, vacuum cylinder includes left end cap 301, right end cap 303 and vaccum case 306.
Left end cap 301 and right end cap 303 are respectively arranged on the both ends of vaccum case 306.Specifically, left end cap 301 and right end Lid 303 connect with vaccum case 306 by bolt and forms cavity.Vaccum case 306 is stainless steel material.
Left end cap 301 is equipped with aeration aperture 302, and aeration aperture 302 is for being filled with special gas.
Right end cap 303 is equipped with aspirating hole 304, and aspirating hole 304 is used to vacuumize and adjust the internal pressure of vacuum cylinder.
Referring to FIG. 2, in one embodiment, vacuum cylinder further includes cooling water inlet 307 and cooling water outlet 308, Cooling water inlet 307 and cooling water outlet 308 are set on vaccum case 306.Cooling water inlet 307 and cooling water outlet 308 are used In connection motor cold water pipe and external cooling-water machine, to prevent motor 602 from overheating.In the embodiment shown in Figure 2, cooling water inlet 307 and cooling water outlet 308 be located at 306 right end top of vaccum case.
Referring to FIG. 2, in one embodiment, vacuum cylinder further includes that sensor lead interface 309 and motor down-lead connect Mouth 310.Sensor lead interface 309 and motor down-lead interface 310 are respectively positioned on right end cap 303.Sensor lead interface 309 is used In connection sensor and the lead of heat patch 405.Motor down-lead interface 310 is for connecting 602 lead of motor.
Referring to FIG. 2, in one embodiment, vacuum cylinder inboard wall is equipped with mobile base 305, mobile base 305 is opposite Removable in vacuum cylinder inboard wall, bearing test mechanism is set in mobile base 305.Specifically, sliding bottom 305 passes through vacuum Sliding rail inside shell 306 is connect with vaccum case 306.Sliding bottom 305 is opened for dragging bearing test mechanism in end cap Sliding bottom 305 drags bearing test mechanism and skids off vaccum case 306 to be debugged afterwards.Specifically, lead screw loading system 1, Dynamometric system 2, test bearing loading system 4, transmission system 5, dynamical system 6 are respectively positioned on the vacuum cylinder of environmental simulation system 3 Interior, wherein lead screw loading system 1, dynamometric system 2, transmission system 5, dynamical system 6 are fixed on environmental simulation by support respectively On the sliding bottom 305 of system 3.
Vaccum case 306, left end cap 301, the right end cap 303 of above-mentioned environmental simulation system 3 are used to form cavity and maintain Vacuum environment.So that bearing test device is simulated vacuum environment and tests lubricating grease volatilization under vacuum conditions to test bearing It is influenced caused by 403.
Fig. 2 and Fig. 3 are please referred to, in one embodiment, lead screw loading system 1 includes load disk 101, feed screw nut 102, lead screw 103 and load support 104.
Load one end that 101 fixing sleeve of disk is set to lead screw 103.Specifically, load disk 101 passes through tight fit and lead screw 103 one end connection.The other end of screw rod 103 and the thrust bearing 201 of dynamometric system 2 pass through tight fit connection.
Lead screw 103 is rotatably set in feed screw nut 102.
Feed screw nut 102 is fixedly connected with load support 104.Specifically, load support 104 passes through with feed screw nut 102 It is bolted.
Support 104 is loaded to be set on vacuum cylinder inboard wall.Specifically, load support 104 is set on sliding bottom 305.
Above-mentioned lead screw loading system 1 is rotated by load disk 101, drives the precession in feed screw nut 102 of lead screw 103 Axial displacement is generated, lead screw 103 is connect with 201 inner ring of thrust bearing, and 103 precession of lead screw makes the rotation of 201 inner ring of thrust bearing simultaneously Bearing base 202 is pushed by 201 outer ring of thrust bearing, then pushes loaded ring 402, loaded ring 402 is applied to test bearing 403 Add axial load.
Fig. 2 and Fig. 4 are please referred to, in one embodiment, dynamometric system 2 includes thrust bearing 201, bearing base 202, axis Hold pedestal support 203, clamping screw 204, force snesor 205 and load connector 206.
Thrust bearing 201 is sheathed on the one end of lead screw 103 far from load disk 101.201 inner ring of thrust bearing and lead screw 103 connections.Lead screw 103 is axially loaded for transmitting to bearing base 202.
Bearing base 202 is sheathed on the one end of thrust bearing 201 far from load disk 101.201 outer ring of thrust bearing and axis Hold the connection of pedestal 202.Specifically, bearing base 202 is the tube structure with bottom.The bottom of bearing base 202 and thrust shaft Hold the end abutment of 201 one end far from load disk 101.Specifically, thrust bearing 201 and bearing base 202 pass through close-fitting Close connection.Bearing base 202 is connect with bearing base support 203 by clearance fit.Bearing base support 203 is used to support axis Hold pedestal 202.
Bearing base support 203 is set on vacuum cylinder inboard wall.Specifically, bearing base support 203 is set to sliding bottom On 305.
Clamping screw 204 is arranged perpendicular to lead screw 303.Bearing base support 203 is equipped with through-hole.Clamping screw 204 is worn Out for locking bearing base 202 after through-hole.Clamping screw 204 is connect by screw thread with bearing base support 203, clamping screw 204, for the bearing base 202 that is locked after axially loaded power size determines, prevent lead screw 103 from rotating in test bearing 403 Retreating in the process leads to axially loaded change.
Force snesor 205 is installed between bearing base 202 and load connector 206.Force snesor 205 is by bearing base 202 axial loads being transmitted to simultaneously measure magnitude of load.It loads connector 206 and passes through screw thread and test bearing loading system 4 Loaded ring pedestal 401 connect.
Above-mentioned dynamometric system 2 connects lead screw 103, axially loaded the pushing of 103 precession of lead screw generation by thrust bearing 201 Dynamic thrust bearing 201 and bearing base 202, and make to be installed in bearing base 202 and load the force snesor between connector 206 205 stress, force snesor 205 measure axial load size, determine the lead screw 103 that stops rotating after axial load.Lock is tightened down Tight bolt 204, clamping screw 204 contact and squeeze bearing base 202, and bearing base 202 is made to be fixed on clamping screw 204 and axis It holds between pedestal support 203, to fix the position of load connector 206 and the axial load of test bearing 403 is made to keep certain. Therefore, thrust bearing 201 is pushed by lead screw 103, and then pushes bearing base 202, force snesor 205, load connector 206, and Axial load is passed to the loaded ring 402 of test bearing loading system 4.
Fig. 2 and Fig. 5 are please referred to, in one embodiment, test bearing loading system 4 includes axial force charging assembly, examination Test bearing 403, test bearing support end 404 and connection pedestal 407.
Axial force charging assembly and load connector 206 connect, and the outer ring of axial force charging assembly and test bearing 403 connects It connects, axial force is loaded on test bearing 403 by 403 outer ring of test bearing by axial force charging assembly.Test bearing 403 can be with For admixture ceramics bearing.
One end of test bearing support end 404 is set in test bearing 403, one end of test bearing support end 404 and examination Test 403 inner ring tight fit of bearing.Test bearing support end 404 is used to support test bearing 403.Test bearing support end 404 The other end is connect by bolt and connecting key with transmission shaft 508.Test bearing support end 404 can be dismantled and for different inner diameters Test bearing 403 replaced.
Further, axial force charging assembly includes loaded ring pedestal 401 and loaded ring 402.Loaded ring pedestal 401 passes through Screw thread is connect with loaded ring 402, and loaded ring 402 contacts with 403 outer ring of test bearing and passes through 403 outer ring of test bearing will be axial Power loads on 403 outer ring of test bearing.Specifically, loaded ring pedestal 401 is connected through a screw thread with loaded ring 402, for transmitting Axial load.
Further, in one embodiment, test bearing loading system 4 further includes heat patch 405, protection bushing 406 and connection pedestal 407.Protection bushing 406 is fixedly connected with connection pedestal 407, and heat patch 405 is installed on protection bushing In 406.Specifically, heat patch 405 is affixed on protection 406 inner wall of bushing.Heat patch 405 is sheathed on the outer of test bearing 403 Side.Heat patch 405 is used for heat run bearing 403.Specifically, heat patch 405 is used for 403 surrounding ring of heat run bearing Border enables bearing grease to accelerate to volatilize and makes bearing test device measuring lubricating grease volatilization loss to test bearing 403 At influence.Protection bushing 406 splashes for preventing test bearing 403 from rotating clast.
Protection bushing 406 is fixedly connected with connection pedestal 407.Connection pedestal 407 is fixedly connected with transmission system 5.Specifically , connecting base plate 407 is connect by screw thread with the bushing of transmission shaft 506 of transmission system 5, and connecting base plate 407 is used to support protection Bushing 406.
Conventional high rate bearing test device, for the grease lubrication admixture ceramics bearing worked under distinct temperature environment, not Consider that bearing grease influences the workability of bearing at a temperature of being higher than the varying environment of room temperature there may be volatilization loss Can, the operating ambient temperature of test bearing can not be adjusted, i.e., the environment around test bearing can not be heated, Wu Fa The higher environment of temperature in bearing practical work process is simulated during bearing test.And the bearing test device of the application, lead to Crossing heat patch 405 can be with 403 ambient enviroment of heat run bearing, so as to adjust the working environment temperature of test bearing 403 Degree, to measure the working performance of test bearing 403 under the higher environment of temperature.
Above-mentioned test bearing loading system 4, loaded ring pedestal 401 are pushed away by the axial load that lead screw loading system 1 generates Dynamic loaded ring 402 is simultaneously applied to axial load on the outer ring of test bearing 403.Test bearing support end 404 and transmission system 5 Transmission shaft 508 be bolted, due to transmission shaft 508 and accompany examination 502 inner ring tight fit of bearing and accompany examination 502 position of bearing It is fixed, so 404 position of test bearing support end is fixed to which 403 position of test bearing is fixed.
It please also refer to Fig. 6, transmission system 5 includes accompanying examination bearing 502, bushing of transmission shaft 506, transmission shaft 508 and bushing Support 509.
Support bushing block 509 is set to the inner wall of vacuum cylinder.Specifically, support bushing block 509 is set on sliding bottom 305.Lining Set support 509 is used to support transmission system 5.
Bushing of transmission shaft 506 is fixed on support bushing block 509.Support bushing block 509 is used to support transmission system 5.Transmission One end of neck bush 506 is fixedly connected with connection pedestal 407.
Transmission shaft 508 is set in bushing of transmission shaft 506, one end of transmission shaft 508 and the fixed company of test bearing support end 404 It connects.The other end and dynamical system 6 of transmission shaft 508 connect.Transmission shaft 508 is for driving test bearing 403 to rotate.
It is equipped between transmission shaft 508 and bushing of transmission shaft 506 and accompanies examination bearing 502.Examination bearing 502 is accompanied to be used to support transmission Axis.
It please also refer to Fig. 6, in one embodiment, transmission system 5 further includes sealing ring 501, driving sleeve 503, holds Pressure ring 504 and protection end cap 507.
The quantity for accompanying examination bearing 502 is two pairs, and two pairs are accompanied examination bearing 502 to be located at 508 both ends of transmission shaft.It is each pair of to accompany examination Bearing 502 is arranged in series.Transmission shaft 508 accompanies examination bearing 502 to be used to support biography with examination bearing 502 is accompanied by tight fit connection Moving axis 508.
Driving sleeve 503 is located at two pairs and accompanies between examination bearing 502.Driving sleeve 503 accompanies examination bearing for axially position 502.Specifically, driving sleeve 503 is contacted with examination 502 inner ring of bearing is accompanied, accompanies examination 502 inner ring of bearing to be driven by transmission shaft 508 and revolve Turn.Specifically, accompanying examination bearing 502 is admixture ceramics bearing.
Bearing ring 504 and sealing ring 501 are respectively arranged at 508 both ends of transmission shaft.Sealing ring 501 and bearing ring 504 are mutual Cooperation is set to and accompanies examination 502 two sides of bearing, for accompanying examination 502 axially position of bearing and sealing.
Protection end cap 507 is fixedly connected with connection far from the one end for connecting pedestal 407 with bushing of transmission shaft 506 by bolt. Specifically, bushing of transmission shaft 506 is connect by end bolt hole with protection end cap 507.Protect end cap 507 for protecting rotation zero Part.Bushing of transmission shaft 506, which is used to support, accompanies examination bearing 502.
It please also refer to Fig. 6, in one embodiment, transmission system 5 further includes locking nut 505.Locking nut 505 is set It sets and 508 end of transmission shaft.Specifically, the rotation of locking nut 505 is set to 508 thread head of transmission shaft, and connect with bearing ring 504 Touching.Locking nut 505 accompanies examination 502 position of bearing for fixed.
It please also refer to Fig. 7, in one embodiment, dynamical system 6 includes shaft coupling 601, motor 602, motor support base 603。
Motor 602 is connect by shaft coupling 601 with transmission shaft 508, and motor 602 is revolved for generating driving test bearing 403 The power turned.Motor 602 is for driving test bearing 403 to rotate.Motor 602 passes through shaft coupling 601 and the driving examination of transmission shaft 508 Bearing support end 403 is tested to rotate and rotate 403 inner ring of test bearing.403 inner ring of test bearing rotates, outside test bearing 403 Circle contacts with loaded ring 402 and bears axially loaded power.
Motor support base 603 is connect with motor 602, and motor support base 603 is set to the inner wall of vacuum cylinder.Motor support base 603 is used In support motor 602.Specifically, motor support base 603 is set on sliding bottom 305.
The working method of above-mentioned bearing test device is as follows:
Firstly, the test bearing 403 for the lubricating grease for having smeared specified amount is installed to test bearing support end 404, load The contact of ring 402 403 outer ring of test bearing and by lead screw loading system 1, dynamometric system 2, transmission system 5 and dynamical system 6 it is each Component is installed on design position.After bearing test device each section installation and debugging, adjusting screw loading system 1, according to The data that dynamometric system 2 measures determine axial load size, and fixed by clamping screw 204 after load determines.Dragging is slided Bearing test mechanism is sent into vaccum case 306 by dynamic pedestal 305, connection motor cold water pipe and cooling water inlet 307, cooling water Outlet 308 and sensor, heat patch 405, motor down-lead, installation left end cap 301 and right end cap 303 after the completion of connection, and Designated gas working medium is inputted by aeration aperture 302 and aspirating hole 304 and adjusts pressure.Then, by adjusting test bearing load The heat patch 405 of system 4 carries out heating to test bearing 403 and opens motor 602 in the scheduled time.Adjust motor 602 Reach required revolving speed, motor 602 drives test bearing 403 to rotate by transmission system 5.Finally, passing through sensor lead interface It connects data collecting instrument and monitors the state parameter of specified test bearing 403.
Above-mentioned bearing test device, can be filled with a variety of special gas to simulate particular job environment, can different pressures, High-speed rotation test, and adjustable working environment pressure are carried out to the bearing of different inner diameters under conditions of gas with various environment Power carries out heating adjusting operating ambient temperature to test bearing and adjustment axis forwards speed, axial load.Therefore, above-mentioned bearing Experimental rig can simulate particular surroundings applied by bearing, to bearing in special gas working medium and higher temperature Work performance under the conditions of degree is assessed, and can by adjust the pressure of revolving speed, axial load and working environment come Research revolving speed, load, pressure are influenced for caused by bearing grease and bearing performance.By replacing various sizes of test axis Hold support end, can the test bearing to different inner diameters carry out rotation experimental study test.In addition, above-mentioned bearing test device energy It is enough to be slided in vaccum case, it is debugged convenient for hauling out vaccum case, it is easy to operate.
The above is only the preferred embodiment of the present invention, it is noted that for those skilled in the art, Without departing from the principles of the invention, several improvements and modifications can also be made, these improvements and modifications also should be regarded as this hair Bright protection scope.

Claims (10)

1. a kind of bearing test device, which is characterized in that including environmental simulation system and bearing test mechanism, the environmental simulation System includes vacuum cylinder, and the bearing test mechanism is set in the vacuum cylinder body, and the environmental simulation system is used for as institute It states bearing test mechanism and the working environment of gas with various atmosphere and different pressures is provided;
The bearing test mechanism includes lead screw loading system, dynamometric system, test bearing loading system, transmission system and power System;
The dynamometric system is connected with the lead screw loading system, and the lead screw loading system is used to provide to test bearing axial Load, the dynamometric system is for measuring axial load size;
The test bearing loading system is connected with the lead screw loading system, and the test bearing loading system is used for described Test bearing transmits axial load;
The dynamical system is connected with the transmission system, and the transmission system is connected with the test bearing, the dynamical system System is rotated by test bearing described in the transmission system drives.
2. bearing test device as described in claim 1, which is characterized in that the vacuum cylinder includes left end cap, right end cap And vaccum case;
The left end cap and the right end cap are respectively arranged on the both ends of the vaccum case;
Aeration aperture is offered on the left end cap, the aeration aperture is for being filled with special gas;
Aspirating hole is offered on the right end cap, the aspirating hole is used to vacuumize and adjust the inside pressure of the vacuum cylinder Power.
3. bearing test device as claimed in claim 2, which is characterized in that the vacuum cylinder further include cooling water inlet and Cooling water outlet, the cooling water inlet and the cooling water outlet are set on the vaccum case.
4. bearing test device as described in claim 1, which is characterized in that the vacuum cylinder inboard wall is equipped with mobile base, The mobile base is removable relative to the vacuum cylinder inboard wall, and the bearing test mechanism is set in the mobile base.
5. bearing test device as described in claim 1, which is characterized in that the lead screw loading system include load disk, Feed screw nut, lead screw and load support, the load disk fixing sleeve are set to one end of the lead screw, and the lead screw is rotatably set In in the feed screw nut, the feed screw nut is fixedly connected with the load support, and the load support is set to the vacuum On cylinder inboard wall.
6. bearing test device as claimed in claim 5, which is characterized in that the dynamometric system includes thrust bearing, bearing Pedestal, bearing base support, clamping screw, force snesor and load connector;
The thrust bearing be sheathed on the lead screw far from it is described load disk one end, the inner ring of the thrust bearing with it is described Lead screw connection, the bearing base is sheathed on the one end of the thrust bearing far from the load disk, outside the thrust bearing Circle is connect with the bearing base, and the bearing base support is set on the vacuum cylinder inboard wall, the bearing base and institute It states bearing base support to connect by clearance fit, the clamping screw is connect by screw thread with the bearing base support, institute It states clamping screw and is located at described for locking the fixing bearing pedestal, the force snesor after axially loaded power size determines Between bearing base and the load connector, the force snesor is for measuring axial load size.
7. bearing test device as claimed in claim 6, which is characterized in that the test bearing loading system includes axial force Charging assembly, test bearing and test bearing support end;
The axial force charging assembly is connected with the load connector, the axial force charging assembly and the test bearing it is outer Axial force is loaded on the test bearing by the outer ring of the test bearing by circle connection, the axial force charging assembly;
The test bearing support end is set in the test bearing, and the inner ring and test bearing support end of the test bearing are tight Cooperation.
8. bearing test device as claimed in claim 7, which is characterized in that the test bearing loading system further includes heating Patch, protection bushing and connection pedestal, the protection bushing are fixedly connected with the connection pedestal, and the heat patch is installed on In the protection bushing, the heat patch is sheathed on the outside of the test bearing, the protection bushing and the connection bottom Seat is fixedly connected, and the connection pedestal is fixedly connected with the transmission system.
9. bearing test device as claimed in claim 8, which is characterized in that the transmission system includes accompanying examination bearing, transmission Neck bush, transmission shaft and support bushing block;
The support bushing block is set to the inner wall of the vacuum cylinder;
The bushing of transmission shaft is fixed on the support bushing block, one end of the bushing of transmission shaft and the fixed company of connection pedestal It connects;
The transmission shaft is set in bushing of transmission shaft, and one end of the transmission shaft is fixedly connected with test bearing support end, described The other end of transmission shaft is connected with the dynamical system;
It is equipped between the transmission shaft and bushing of transmission shaft and accompanies examination bearing.
10. bearing test device as claimed in claim 9, which is characterized in that the transmission system further includes sealing ring, transmission Axle sleeve, bearing ring and protection end cap;
The quantity for accompanying examination bearing is two pairs, and examination bearing is accompanied to be located at the both ends of the drive shaft, driving sleeve described in two pairs It accompanies between examination bearing positioned at two Duis, the bearing ring and the sealing ring are respectively arranged at the both ends of the drive shaft, the protection End cap is fixedly connected with the bushing of transmission shaft far from one end of the connection pedestal by bolt.
CN201811370183.0A 2018-11-17 2018-11-17 A kind of bearing test device Pending CN109540519A (en)

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CN110887590A (en) * 2019-12-04 2020-03-17 兰州华汇仪器科技有限公司 High-speed bearing friction tester
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Application publication date: 20190329