CN101660970A - Large bearing testing machine - Google Patents
Large bearing testing machine Download PDFInfo
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- CN101660970A CN101660970A CN200910307666A CN200910307666A CN101660970A CN 101660970 A CN101660970 A CN 101660970A CN 200910307666 A CN200910307666 A CN 200910307666A CN 200910307666 A CN200910307666 A CN 200910307666A CN 101660970 A CN101660970 A CN 101660970A
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Abstract
The invention belongs to the technical field of bearing tests, in particular to a large bearing testing machine. The large bearing test machine is characterized by consisting of a test unit, a loadingunit, a drive unit, a control unit, a hydraulic power unit and a workbench. The loading unit, the drive unit and the control unit are arranged on the workbench, the test unit is arranged on the loading unit, the hydraulic power unit is arranged behind the workbench and connected with the loading unit, the control unit is matched with the test unit, the loading unit, the drive unit, and the hydraulic power unit respectively. The test unit is used for receiving a large bearing for test, the loading unit applies radial load, axial load and capsizing moment to the test bearing, the drive unit drives the test bearing to rotate at a specified rotation speed and torque, and the control unit controls electrical operation and protection, monitors test operation, analyzes test procedures and results, and give feedbacks at proper time.
Description
Technical field
The invention belongs to the bearing test technical field, particularly a kind of large bearing testing machine.
Background technology
In industry extensive application such as wind-power electricity generation, rolling stock, metallurgical mine, petroleum machinery, engineering machinery, therefore work under bad environment requires to have high precision, long-life and high reliability to external diameter at the large size bearing of Φ 400mm～1000mm.The fatigue lifetime of bearing and reliability thereof are the most important performance index of bearing, but because influence the theoretical still need of the too many and bearing fatigue life of factor fatigue lifetime perfect, carrying out durability test is present only effective way.Bearing frictional torque also is the Key Performance Indicator of bearing, and many working condition requirements are tested performance index such as the maximum friction moment of bearing, average friction moments.Large bearing testing machine is the key equipment that large size bearing is carried out durability test and performance test, but, large bearing testing machine quantity is few at present, and volume is big, cost is high, function is comparatively single, can not satisfy people to the more and more stricter testing requirements of large size bearing.
Summary of the invention
Technical matters to be solved by this invention provides a kind of reasonable in design, not only can carry out durability test but also can make a service test, saves the space, structural rigidity is good.
It is this large bearing testing machine that the present invention solves the problems of the technologies described above the technical scheme that is adopted, and its design feature is: be made up of test unit, loading unit, driver element, control module, hydraulic power unit and worktable.Loading unit, driver element and control module are installed on the worktable, test unit is arranged on the loading unit, hydraulic power unit is placed on the back of worktable, links to each other with loading unit, and control module is complementary with test unit, loading unit, driver element, hydraulic power unit respectively.The large size bearing of test unit installation test; loading unit applies radial load, axial load and upsetting moment to test bearing; driver element is with the rotating speed and the rotation of torque actuated test bearing of regulation, and control module control electric operation and protection, monitoring test operation, analytical test process and result also feed back in good time.
Test unit of the present invention is made up of test main shaft, axial force transducer, upper support seat, lower support seat, left spring bearing, right spring bearing and supporting body, the lower support seat is fixed on the worktable, the upper support seat is fixed on the lower support seat, test bearing is contained in the supporting body, supporting body is sleeved on the middle part of test main shaft, the test main shaft is installed in upper support seat and the lower support seat by the left spring bearing and the right spring bearing at two ends, one end of test main shaft connects driver element, and the other end is connected with axial force transducer.The supporting body profile is short eight prism-shaped, endoporus installation test bearing, outside surface sensor installation.
Supporting body profile of the present invention is short eight prism-shaped.
Loading unit of the present invention is made up of radial loaded assembly and three axial charging assemblies, and the radial loaded assembly is made up of radial loaded cylinder block, piston, cylinder cap, radial force sensor; Three axial charging assemblies are that the center is 120 ° of evenly distributions with the test spindle centerline, each axial charging assembly is made up of axial load cylinder cylinder body, axial piston, cylinder cap, push rod, loading head, the radial loaded cylinder block is fixed on the end face middle part of upper support seat, axially the load cylinder cylinder body is fixed on the side of upper support seat, lower support seat, and the load cylinder cylinder body is connected with hydraulic power unit.
Driver element of the present invention is made up of alternating current generator, tachogenerator, torque sensor, shaft coupling knot, gimbal coupling, motor base, alternating current generator links to each other with the test main shaft by tachogenerator, torque sensor, shaft coupling knot, gimbal coupling, alternating current generator is fixed on the worktable by motor base, and motor base and worktable are provided with the adjusting leading screw.Alternating current generator provides power for the test main shaft, and torque and speed by torque sensor measurement and tachogenerator experiment with measuring are transferred to control module with torque and rotary speed data.The axial location of motor base is regulated by regulating leading screw.
The design proposal of described large bearing testing machine mainly comprises following content:
1) design of test spindle unit and charger is on support frame, and the support frame design is cutting plane at an end of worktable with the surface level by the test spindle centerline, and support frame is designed to split type structure, is made of upper support seat and lower support seat;
2) the test spindle unit is designed to simple beam structure, and the spring bearing at test main shaft two ends forms two bearings of free beam, and the test bearing design is at the middle part of test main shaft;
3) test bearing connects with charger by supporting body, and the cross sectional shape of supporting body is designed to octagon;
4) charger is designed to separate radial loaded assembly and axial charging assembly, radial loaded assembly and test bearing vertical and intersectant centerline, and axially charging assembly is designed to three equally distributed axial oil cylinders of circumference;
5) the drive unit design drives alternating current generator by big-power transducer, by gimbal coupling motoring ring test spindle operation at the other end of worktable;
6) testing element comprises radial force sensor, axial force transducer, tachogenerator and torque sensor, can test radial load, axial load, test speed and torque;
7) the proportional reduction valve of design of Hydraulic System is realized accurately loading;
8) Control System Design is a computer control system, can realize carrying out automatically of test according to loading spectrum and rotating speed spectrum, and test findings can be shown and print.
The present invention compares with prior art and has the following advantages and effect:
1) adopt support frame structure installation test main shaft and load cylinder, structural rigidity is good, the saving space;
2) the test main shaft adopts simple beam structure, and test bearing is installed in the middle part of test main shaft, and topology layout is reasonable, and load-bearing capacity is strong, and the spring bearing life-span is long;
3) the test bearing supporting body adopts short eight prism structures, and the radial loaded position is accurate, and temperature sensor, vibration transducer are arranged easy;
4) under the load condition identical with speed, utilize torque sensor can compare two moment of frictions of overlapping the same model bearings, differentiate the quality of bearing;
5) radial loaded and axial the loading are respectively arranged, and be separate, mutually noninterfere;
6) regulate the radial loaded position, perhaps change the balance that axially loads, anti-bias load ability that can test bearing;
7) be particularly suitable for durability test and the performance test of external diameter at Φ 400mm～1000mm large size bearing.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of test unit of the present invention;
Fig. 3 is the structural representation of loading unit of the present invention;
Fig. 4 is a structure of driving unit synoptic diagram of the present invention.
Among the above-mentioned figure: the 1-test unit; The 2-loading unit; The axial charging assembly of 2-1; 2-2 radial loaded assembly; The 3-driver element; The 4-control module; The 5-hydraulic power unit; The 6-worktable; 7-lower support seat; 8-upper support seat; 9-tests main shaft; The 10-test bearing; The 11-supporting body; 12-left side spring bearing; The right spring bearing of 12-1-; The 13-axial force transducer; 14-radial loaded cylinder block; The 15-piston; The 16-oil cylinder cover; The 17-sensor; The axial load cylinder cylinder body of 18-; The 19-axial piston; The 20-cylinder cap; The 21-push rod; The 22-loading head; The 23-alternating current generator; The 24-tachogenerator; The 25-torque sensor; 26-shaft coupling knot; The 27-gimbal coupling; The 28-motor base; 29-regulates leading screw; The 30-sensor base.
Embodiment
The present invention is described in further detail below in conjunction with embodiment, and following examples are explanation of the invention and the present invention is not limited to following examples.
As shown in Figure 1, the large size bearing multifunctional test machine is made up of test unit 1, loading unit 2, driver element 3, control module 4, hydraulic power unit 5 and worktable 6.Test unit 1, loading unit 2, driver element 3 and control module 4 are installed on the worktable 6, and hydraulic power unit 5 is placed on the back of worktable 6, link to each other with loading unit 2.The large size bearing of test unit 1 installation test; 2 pairs of test bearings of loading unit apply radial load, axial load and upsetting moment; driver element 3 is with the rotating speed and the rotation of torque actuated test bearing of regulation, and control module 4 control electric operations and protection, monitoring test operation, analytical test process and result also feed back in good time.
As shown in Figure 2, large size bearing multifunctional test machine, its test unit 1 comprise test main shaft 9, lower support seat 7, upper support seat 8, left spring bearing 12, right spring bearing 12-1, supporting body 11.Test bearing 10 is contained in the endoporus of supporting body 11, be sleeved on the middle part of test main shaft 9 together, test main shaft 9 is installed in lower support seat 7, the upper support seat 8 by the left spring bearing 12 at two ends, right spring bearing 12-1, wherein an end is a stiff end, the other end is a free end, the stiff end of test main shaft 1 connects driver element 3, and free end is installed axial force transducer 13.Supporting body 11 profiles are short eight prism-shaped, endoporus installation test bearing 10, and outside surface sensor installation 17, sensor 17 comprise radial force sensor, temperature sensor and vibration transducer.Lower support seat 7 is fixed on the worktable 6, and upper support seat 8 is fixed on lower support seat 7.
As shown in Figure 3, large size bearing multifunctional test machine, its loading unit 2 comprise radial loaded assembly 2-2 and three axial charging assembly 2-1.Radial loaded assembly 2-2 comprises radial loaded cylinder block 14, piston 15, cylinder cap 16, sensor 17; Three axial charging assembly 2-1 are that the center is 120 ° of evenly distributions with test main shaft 9 center lines, comprise axial load cylinder cylinder body 18, axial piston 19, cylinder cap 20, push rod 21, loading head 22.Radial loaded cylinder block 14 is fixed on the upper support seat 8 the end face middle part, and axially load cylinder cylinder body 18 is fixed on the lower support seat 7, upper support seat 8 sides of test main shaft 9 stiff ends.Radial loaded cylinder block 14 is connected with hydraulic power unit 5 respectively with axial load cylinder cylinder body 18.
As shown in Figure 4, large size bearing multifunctional test machine, its driver element 3 comprise alternating current generator 23, tachogenerator 24, torque sensor 25, shaft coupling knot 26, gimbal coupling 27, motor base 28.Alternating current generator 23 links to each other with the stiff end of test main shaft 9 by tachogenerator 24, torque sensor 25, shaft coupling knot 26, gimbal coupling 27, for test main shaft 9 provides power, torque and speed by torque sensor measurement 25 and tachogenerator 24 experiment with measuring are transferred to control module 4 with torque and rotary speed data.Motor is fixed on the worktable 6 by motor base 28, and the axial location of motor base 28 is regulated by regulating leading screw 29.
The adjustment and the use of large bearing testing machine of the present invention are as follows:
Before utilizing this bearing tester that large size bearing is tested, at first need upper support seat 8 is sling, bearing 10 and supporting body 11 that needs are tested are installed on the test main shaft 9, again upper support seat 8 and lower support seat 7 are fixed, regulate radial loaded assembly 2-2 and the loading position of three axial charging assembly 2-1 on supporting body 11 simultaneously, check sensor 17 and axial force transducer 13; To test main shaft 9 then and connect, adjust tachogenerator 24 and torque sensor 25 with gimbal coupling 27; Loading unit 2 and hydraulic power unit 5 are connected the top hole pressure of regulating system pressure and proportional pressure-reducing valve; According to loading spectrum and velocity spectrum, regulate each test parameters of control module 4.
When utilizing this bearing tester that large size bearing is tested, by control module 4 monitoring tests operations, analytical test process and result and feed back in good time, and then test bearing 10 is carried out durability test and performance test.
Utilize this testing machine, can carry out ordinary life test, bearing life strenuous test, can compare test, can also load upsetting moment bearing is tested bearing frictional torque to large size bearing.
In addition, need to prove, the specific embodiment described in this instructions, its zero, the shape of parts, institute's title of being named etc. can be different.Allly conceive equivalence or the simple change that described structure, feature and principle are done, be included in the protection domain of patent of the present invention according to patent of the present invention.The technician of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present invention or surmount the defined scope of these claims, all should belong to protection scope of the present invention.
Claims (5)
1. a large bearing testing machine is characterized in that: be made up of test unit, loading unit, driver element, control module, hydraulic power unit and worktable.Loading unit, driver element and control module are installed on the worktable, test unit is arranged on the loading unit, hydraulic power unit is placed on the back of worktable, links to each other with loading unit, and control module is complementary with test unit, loading unit, driver element, hydraulic power unit respectively.
2. large bearing testing machine according to claim 1, it is characterized in that: described test unit is by the test main shaft, axial force transducer, the upper support seat, the lower support seat, left side spring bearing, right spring bearing and supporting body are formed, the lower support seat is fixed on the worktable, the upper support seat is fixed on the lower support seat, test bearing is contained in the supporting body, supporting body is sleeved on the middle part of test main shaft, the test main shaft is installed in upper support seat and the lower support seat by the left spring bearing and the right spring bearing at two ends, one end of test main shaft connects driver element, and the other end is connected with axial force transducer.
3. large bearing testing machine according to claim 2 is characterized in that: described supporting body profile is short eight prism-shaped.
4. large bearing testing machine according to claim 1 is characterized in that: described loading unit is made up of radial loaded assembly and three axial charging assemblies, and the radial loaded assembly is made up of radial loaded cylinder block, piston, cylinder cap, radial force sensor; Three axial charging assemblies are that the center is 120 ° of evenly distributions with the test spindle centerline, each axial charging assembly is made up of axial load cylinder cylinder body, axial piston, cylinder cap, push rod, loading head, the radial loaded cylinder block is fixed on the end face middle part of upper support seat, axially the load cylinder cylinder body is fixed on the side of upper support seat, lower support seat, and the load cylinder cylinder body is connected with hydraulic power unit.
5. large bearing testing machine according to claim 1, it is characterized in that: described driver element is made up of alternating current generator, tachogenerator, torque sensor, shaft coupling knot, gimbal coupling, motor base, alternating current generator links to each other with the test main shaft by tachogenerator, torque sensor, shaft coupling knot, gimbal coupling, alternating current generator is fixed on the worktable by motor base, and motor base and worktable are provided with the adjusting leading screw.
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| CN200910307666A CN101660970A (en) | 2009-09-24 | 2009-09-24 | Large bearing testing machine |
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| CN200910307666A CN101660970A (en) | 2009-09-24 | 2009-09-24 | Large bearing testing machine |
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| CN101813561A (en) * | 2010-03-22 | 2010-08-25 | 上海三一科技有限公司 | Detection device for load of rolling bearing and detection method thereof |
| CN101839804A (en) * | 2010-03-08 | 2010-09-22 | 清华大学 | Method and device of bearing electric destructive test |
| CN101957261A (en) * | 2010-04-21 | 2011-01-26 | 中国人民解放军国防科学技术大学 | Antifriction bearing multi-functional fatigue life test bed |
| CN102072816A (en) * | 2010-05-21 | 2011-05-25 | 浙江八环轴承有限公司 | Bearing tester |
| CN102175369A (en) * | 2011-02-24 | 2011-09-07 | 上海大学 | Friction torque testing device for rolling bearing at low temperature |
| CN102175375A (en) * | 2011-01-27 | 2011-09-07 | 成都斯瑞工具科技有限公司 | Instrument for measuring startup torque, swing torque and slippage force of constant-velocity universal joint assembly |
| CN102519639A (en) * | 2011-12-14 | 2012-06-27 | 河南科技大学 | Friction torque measurement apparatus of horizontal bearing |
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| CN104807629A (en) * | 2015-05-08 | 2015-07-29 | 武汉理工大学 | Electromagnetic hydraulic comprehensive simulation test loading device for shafting |
| CN104913933A (en) * | 2015-05-19 | 2015-09-16 | 昆明理工大学 | Heavy load rolling bearing accelerated fatigue test device |
| CN104964825A (en) * | 2015-07-02 | 2015-10-07 | 孙连贵 | Vibration measuring instrument for super-large or super-heavy bearing |
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| CN101839804A (en) * | 2010-03-08 | 2010-09-22 | 清华大学 | Method and device of bearing electric destructive test |
| CN101813561A (en) * | 2010-03-22 | 2010-08-25 | 上海三一科技有限公司 | Detection device for load of rolling bearing and detection method thereof |
| CN101813561B (en) * | 2010-03-22 | 2013-09-18 | 昆山三一机械有限公司 | Detection device for load of rolling bearing and detection method thereof |
| CN101957261A (en) * | 2010-04-21 | 2011-01-26 | 中国人民解放军国防科学技术大学 | Antifriction bearing multi-functional fatigue life test bed |
| CN101957261B (en) * | 2010-04-21 | 2012-05-16 | 中国人民解放军国防科学技术大学 | Antifriction bearing multi-functional fatigue life test bed |
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| CN104964825A (en) * | 2015-07-02 | 2015-10-07 | 孙连贵 | Vibration measuring instrument for super-large or super-heavy bearing |
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| CN109084981B (en) * | 2018-10-22 | 2020-04-03 | 中国矿业大学 | Bearing impact friction wear testing machine |
| CN110017987A (en) * | 2019-04-09 | 2019-07-16 | 深圳市骁阳工程咨询有限公司 | High speed roller bearing testing stand |
| CN110017987B (en) * | 2019-04-09 | 2022-04-12 | 深圳市骁阳工程咨询有限公司 | High-speed rolling bearing test bed |
| CN110346138A (en) * | 2019-07-08 | 2019-10-18 | 中车永济电机有限公司 | High-speed EMUs traction motor bearings life-cycle decline simulation test apparatus |
| CN111426475A (en) * | 2020-05-06 | 2020-07-17 | 湖南汉能科技有限公司 | Main shaft bearing impact test platform |
| CN111426475B (en) * | 2020-05-06 | 2021-09-17 | 湖南汉能科技有限公司 | Main shaft bearing impact test platform |
| CN113295409A (en) * | 2021-04-28 | 2021-08-24 | 洛阳摩科机械科技有限公司 | Bearing friction torque testing machine |
| CN113295409B (en) * | 2021-04-28 | 2024-06-04 | 洛阳摩科机械科技有限公司 | Bearing friction torque testing machine |
| CN113984263A (en) * | 2021-10-29 | 2022-01-28 | 绍兴淼汇能源科技有限公司 | Radial force and axial force detection device |
| CN113984263B (en) * | 2021-10-29 | 2023-12-19 | 绍兴淼汇能源科技有限公司 | Radial force and axial force detection device |
| CN114486249A (en) * | 2022-01-25 | 2022-05-13 | 中国铁建重工集团股份有限公司 | Load loading device and method for slewing bearing performance test bench |
| CN115165177A (en) * | 2022-07-06 | 2022-10-11 | 中机生产力促进中心有限公司 | Belt pulley type wireless torque measurement sensor for rotary shaft system |
| CN115165177B (en) * | 2022-07-06 | 2023-06-20 | 中机生产力促进中心有限公司 | Belt pulley type wireless torque measuring sensor for rotary shaft system |
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