CN102288410B - Large-scale bearing test table having hydrostatic loading closed structure - Google Patents
Large-scale bearing test table having hydrostatic loading closed structure Download PDFInfo
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- CN102288410B CN102288410B CN 201110193110 CN201110193110A CN102288410B CN 102288410 B CN102288410 B CN 102288410B CN 201110193110 CN201110193110 CN 201110193110 CN 201110193110 A CN201110193110 A CN 201110193110A CN 102288410 B CN102288410 B CN 102288410B
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Abstract
The invention belongs to the technical field of bearing test and relates to a bearing test table, which consists of four parts, namely a closed mechanical structure, a hydrostatic loading system, a driving system and a measurement and control system, wherein the closed mechanical structure consists of a test bearing, a test table end cover, a connecting part, a vertical column, a base and the like, and a loading disk, the test bearing, the end cover, the vertical column and the base form an internal closed structure; the hydrostatic loading system realizes radial loading, axial loading and overturning moment loading by an axial loading seat and an oil cylinder and a radial loading seat and the oil cylinder and performs application according to a test bearing load spectrum; a motor, which is fixed on the base, of the driving system drives the loading disk and the test bearing to rotate by a speed reducer and a driving gear; and the measurement and control system comprises a sensor, a computer, a control cabinet, the sensor, an actuator and the like. By using a floating hydrostatic loading technology, the influence of a test table bearing on the performance data of the test bearing is reduced. The test table is high in rigidity, small in volume and low in cost.
Description
Technical field
The invention belongs to the bearing test technical field, relate to a kind of large size bearing testing table.
Background technology
Bearing has important role in the development of the national economy; The bearing of diameter more than 1000mm has a wide range of applications in industries such as wind-power electricity generation, rolling stock, metallurgical mine, petroleum machinery, engineering machinery; Its performance and functional reliability will directly have influence on the Performance And Reliability of plant equipment; Especially the turntable bearing of pivoting support class bears very big upsetting moment, therefore requires bearing to have higher motion performance, long-life and high reliability.
Bearing test-bed is the key equipment that the Performance And Reliability to bearing detects; It can have a correct assessment to the performance of the bearing that will come into operation; In time grasp and revise design parameter; Analyze the potential cause of specific operation lower bearing defective, the blindness of avoiding bearing to select, use reduces unnecessary loss.Existing bearing test-bed adopts horizontal type structure more; Utilize paired rolling bearing that load mode is installed, the durability test of the bearing that makes an experiment and performance test, accuracy of detection is low; Especially can not detect the concrete performance of single bearing; Be difficult to satisfy to the pivoting support class bearing more and more stricter testing requirements, particularly wind power generating set driftage, become oar and main bearing, the hoisting device pivoting support class bearing of industries such as boats and ships, building, harbour.
Summary of the invention
In order to satisfy the turntable bearing testing requirements of pivoting support class, realize the performance test of big load of low speed and super large upsetting moment, improve the performance measurement precision, the present invention proposes a kind of novel bearing testing table principle and structure.
Bearing test-bed of the present invention can adopt vertical structure or horizontal type structure to realize.Vertical structure is: the test bearing level is installed in the top, upper end or the bottom, lower end of bearing test-bed, and the axis of test bearing is a vertical; Horizontal type structure is: test bearing is vertically mounted on the left end or the right-hand member of bearing test-bed, and the axis of test bearing is a horizontal direction.Testing table of the present invention comprises sealing physical construction, static pressure loading system, drive system and TT&C system four parts.
Sealing physical construction is made up of test bearing, testing table end cap and parts such as link, column and base; End link, test bearing, loading disc, the hydrostatic bearing pad that floats, loading seat, oil cylinder and base are connected to form branch road, and its two ends are fixed in the mechanical close structure, form inner stressed enclosed construction.Select one in the outer ring of test bearing and the inner ring and fix, another connects loading disc.The interior ring rebound that is connected with test bearing, outer shroud rebound, are connected with top end cover and loading disc through the inner and outer ring rebound for different model and the test bearing that pattern is installed for changing assembly.
The static pressure loading system comprises unsteady hydrostatic bearing pad, loads seat, oil cylinder and hydraulic system.On loading disc, adopt the hydrostatic bearing pad that floats to be connected respectively with radial loaded seat, axial loading seat and oil cylinder; Load cylinder passes through to load seat, unsteady hydrostatic bearing pad, loading disc to the radial loaded of test bearing, axially loading and upsetting moment loading, and presses test bearing loading spectrum imposed load.Through hydraulic system power is provided, promotes hydrostatic bearing loading disc is applied radial load, axial load and upsetting moment, and it is passed to test bearing through loading disc.The ring seat left and right sides was made up of radial loaded oil cylinder, radial force sensor, hydrostatic bearing pad in radial loaded seat and oil cylinder were fixed on, and provided radial load to load; Axially load seat and oil cylinder and be positioned at loading disc both sides up and down, form, can realize that through the various combination of load cylinder axial load and upsetting moment load simultaneously by axial load cylinder, axial force transducer, hydrostatic bearing pad.The terminal charging assembly of this loading system compensates the loading disc distortion by unsteady hydrostatic bearing pad, changes through the oil cylinder oil pressure and realizes pressing the loading spectrum loading.The load cylinder cylinder body is connected with hydraulic system.
Drive system is made up of motor, reducer casing, driven wheel etc.Motor and reducer casing are fixed on the base, and motor drives loading disc and test bearing rotation through the speed reduction unit driven wheel, realizes the at the uniform velocity rotation of testing bearing inner race.
Test is divided into measuring system and control system with control system, and measuring system comprises sensor, computing machine, experimental data processing and analysis software etc.; Control system comprises computing machine, switch board, sensor and actuator etc.The sensor of measuring system is tested the correlated performance parameter of test bearing; Comprise sensors such as power (radially, axially), moment, stress, temperature, displacement (distortion), angle and (angle) speed; Can realize the real time dynamic measurement of a plurality of parameters of test bearing; Effectively improve measuring accuracy; And practice thrift test period greatly, the correlation parameter of test macro experiment with measuring bearing and control corresponding parameter, test figure are transferred on the computing machine and form test report and form by analysis software Processing Test data.Control system is connected with drive system, loading system, test macro mutually, realizes the real-time control of testing table.Control system comprises the control that hydraulic system, drive system and mechanical and electric operation, protection, monitoring test are moved; And to the FEEDBACK CONTROL of process of the test measurement result; The control of drive system and loading system realizes carrying out automatically of test according to test load spectrum and the requirement of rotating speed spectrum.The dynamic demonstration of controlled variable and test parameter simultaneously, and test result preserved and print.
The invention has the beneficial effects as follows:
1, the static pressure loading technique that floats is proposed; A test bearing is carried out load test; Avoided existing bearing test-bed to need two bearings combinations (test rolling bearing with accompany the test rolling bearing) test and be difficult to obtain the shortcoming of single test bearing performance data, reduced of the influence of testing table bearing the test bearing performance data.
2, propose testing table sealing physical construction, make loading disc, test bearing, end cap, column and base form force-closed structure, testing table rigidity is big, and volume is little, and cost is low, saves the space.
3, test bearing is installed in testing table end (top, bottom, left end, right-hand member), installs with the test bearing parts, and topology layout is reasonable, and is easy to loading and unloading.
4, parameters such as the moment of friction of test bearing, displacement deformation are directly measured, and precision is high.
Description of drawings
Fig. 1 is an interposed structure synoptic diagram on the vertical enclosed construction bearing of the present invention.
Fig. 2 is the horizontal enclosed construction synoptic diagram of the present invention.
Among the figure: 1 sealing physical construction, 2 static pressure loading systems, 3 drive systems, 4 TT&C systems, 5 test bearings; 6 testing table top end cover, 7 columns, 8 bases, 9 interior ring rebounds; 10 outer shroud rebounds, 11 interior ring seats, 12 loading discs, 13 hydrostatic bearing pads; 14 motors, 15 speed reduction units, 16 driven wheels, 17 load seat.
Embodiment
Following examples are to explanation of the present invention, and the present invention is not limited to following examples.
Embodiment 1:
Be illustrated in figure 1 as and put enclosed construction on the vertical bearing of the present invention: bearing test-bed of the present invention is made up of sealing physical construction 1, static pressure loading system 2, drive system 3, TT&C system 4 four parts.
Sealing physical construction 1 is formed by parts such as test bearing 5 and testing table end cap 6 and link, column 7, bases 8 and seals physical construction; Select one in the outer ring of test bearing 5 and the inner ring and fix, another connects loading disc 12.The interior ring rebound 9 that is connected with test bearing, outer shroud rebound 10, are connected with top end cover 6 and loading disc 12 through inner and outer ring rebound 9,10 for different model and the test bearing that pattern is installed for changing assembly.Sealing physical construction is arranged on the top of bearing test-bed, can install easily test bearing through lifting.
The static pressure loading system comprises the test bearing 5 that floats, hydrostatic bearing pad 13, loading seat 17 and oil cylinder, hydraulic system.On loading disc 12, adopt the hydrostatic bearing pad that floats to be connected respectively with radial loaded seat, axial loading seat and oil cylinder; Load cylinder passes through to load the radial loaded of seat 17, unsteady hydrostatic bearing pad 13,12 pairs of test bearings of loading disc, axially loading and upsetting moment loading, and presses test bearing loading spectrum imposed load.Through hydraulic system power is provided, promotes hydrostatic bearing loading disc 12 is applied radial load, axial load and upsetting moment, and it is passed to test bearing 5 through loading disc 12; Axially load seat and oil cylinder and loading seat and total two separate units of oil cylinder.Ring seat 11 left and right sides were made up of radial loaded oil cylinder, radial force sensor, hydrostatic bearing pad 13 in radial loaded seat and oil cylinder were fixed on, and provided radial load to load; Axially load seat and oil cylinder and be positioned at loading disc about in the of 12 both sides, form, can realize that through the various combination of load cylinder axial load and upsetting moment load simultaneously by axial load cylinder, axial force transducer, hydrostatic bearing pad.The terminal charging assembly of this loading system compensates the loading disc distortion by unsteady hydrostatic bearing pad, changes through the oil cylinder oil pressure and realizes pressing the loading spectrum loading.The load cylinder cylinder body is connected with hydraulic system.
Drive system is made up of motor 14, reducer casing 15, driven wheel 16 etc.Motor 14 and reducer casing 15 are fixed on the base, and motor 14 drives loading disc 12 and test bearing 5 rotations through the speed reduction unit driven wheel, realizes the at the uniform velocity rotation of testing bearing inner race.
Test is divided into measuring system and control system with control system, and measuring system comprises sensor, computing machine, experimental data processing and analysis software etc.; Control system comprises computing machine, switch board, sensor and actuator etc.The sensor of measuring system is tested the correlated performance parameter of test bearing; Comprise sensors such as power (radially, axially), moment, stress, temperature, displacement (distortion), angle and (angle) speed; Can realize the real time dynamic measurement of a plurality of parameters of test bearing; Effectively improve measuring accuracy; And practice thrift test period greatly, the correlation parameter of test macro experiment with measuring bearing and control corresponding parameter, test figure are transferred on the computing machine and form test report and form by analysis software Processing Test data.Control system is connected with drive system, loading system, test macro mutually, realizes the real-time control of testing table.Control system comprises the control that hydraulic system, drive system 2 and mechanical and electric operation, protection, monitoring test are moved; And to the FEEDBACK CONTROL of process of the test measurement result; The control of drive system and loading system realizes carrying out automatically of test according to test load spectrum and the requirement of rotating speed spectrum.The dynamic demonstration of controlled variable and test parameter simultaneously, and test result preserved and print.
Embodiment 2:
As shown in Figure 2, be horizontal enclosed construction of the present invention, basic identical with structure among the embodiment 1, wherein test bearing 5 is vertically mounted on the left end or the right-hand member of bearing test-bed, and the axis of test bearing is a horizontal direction.
Claims (1)
1. a bearing test-bed comprises sealing physical construction, static pressure loading system, drive system and TT&C system, it is characterized in that sealing physical construction: form sealing physical construction jointly by test bearing, testing table end cap and link, column and base; Testing table end cap and link, test bearing, loading disc, the hydrostatic bearing pad that floats, loading seat, oil cylinder and base connect into branch road, and its two ends are fixed in the mechanical close structure, form inner stressed enclosed construction;
Static pressure loading system: select one in the outer ring of test bearing and the inner ring and fix; Another connects loading disc; On loading disc, adopt the hydrostatic bearing pad that floats to be connected respectively with radial loaded seat, axial loading seat and oil cylinder; Load cylinder passes through to load seat, unsteady hydrostatic bearing pad, loading disc to the radial loaded of test bearing, axially loading and upsetting moment loading, and presses test bearing loading spectrum imposed load;
Bearing test-bed adopts vertical structure or horizontal type structure to realize: bearing test-bed adopts vertical structure, that is: the test bearing level is installed in the top, upper end or the bottom, lower end of bearing test-bed, and the axis of test bearing is a vertical; Bearing test-bed adopts horizontal type structure, that is: test bearing is vertically mounted on the left end or the right-hand member of bearing test-bed, and the axis of test bearing is a horizontal direction.
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| CN 201110193110 CN102288410B (en) | 2011-07-11 | 2011-07-11 | Large-scale bearing test table having hydrostatic loading closed structure |
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| CN 201110193110 CN102288410B (en) | 2011-07-11 | 2011-07-11 | Large-scale bearing test table having hydrostatic loading closed structure |
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| CN102288410B true CN102288410B (en) | 2012-12-26 |
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| CN102980755B (en) * | 2012-11-16 | 2015-05-20 | 北京工业大学 | Quantitive type experimental device for dynamic and static performances of static-pressure rotary table |
| CN103674710B (en) * | 2013-10-16 | 2015-10-21 | 洛阳轴研科技股份有限公司 | Increase progressively the stiffness curve method of testing of miniature bearing axial displacement under axial force continuously |
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| CN105179263B (en) * | 2015-08-20 | 2017-03-29 | 上海阿波罗机械股份有限公司 | A kind of major cycle sodium pump hydrostatic bearing assay device |
| CN108318165B (en) * | 2017-12-14 | 2020-11-13 | 西安益翔航电科技有限公司 | Bearing dynamic friction torque tester |
| CN108801639B (en) * | 2018-07-26 | 2024-02-02 | 索特传动设备有限公司 | Bearing test tool and system |
| CN113607317B (en) * | 2021-08-04 | 2022-08-16 | 大连理工大学 | Indirect measuring method and system for raceway contact stress |
| CN114088397B (en) * | 2021-12-08 | 2023-08-25 | 中国石油大学(华东) | Thrust bearing performance test device based on similarity theory |
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Inventor after: Wang Delun Inventor after: Sun Shoulin Inventor after: Wang Lianji Inventor after: Jin Ying Inventor after: Mao Fanhai Inventor after: Dong Huimin Inventor after: Ma Yali Inventor after: Gao Yuan Inventor before: Wang Delun Inventor before: Sun Shoulin Inventor before: Wang Lianji Inventor before: Mao Fanhai Inventor before: Dong Huimin Inventor before: Ma Yali Inventor before: Gao Yuan |
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