CN106525431A - Multi-oil cylinder axial loading system - Google Patents
Multi-oil cylinder axial loading system Download PDFInfo
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- CN106525431A CN106525431A CN201611218871.6A CN201611218871A CN106525431A CN 106525431 A CN106525431 A CN 106525431A CN 201611218871 A CN201611218871 A CN 201611218871A CN 106525431 A CN106525431 A CN 106525431A
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- cylinder
- oil
- force
- axial loading
- loading
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
A multi-oil cylinder axial loading system consists of a hydraulic system, a loading device, a force conduction and measurement device and a measurement and control system which are arranged in sequence; the loading device consists of a loading oil cylinder cover plate and a cylinder block arranged parallelly, a plurality of through holes and a plurality of blind holes are annularly, uniformly and alternately arranged in the cylinder block, springs are arranged in the blind holes, and oil cylinders are arranged in the through holes; the force conduction and measurement device includes pressure bearing rings, the stress ends of the pressure bearing rings are arranged close to the springs and oil cylinders, the non-stress ends of the pressure bearing rings are also annularly uniformly provided with a plurality of force sensors; the hydraulic system includes an oil tank, an oil supply pump unit, an overflow valve and a proportional pressure-reducing valve which communicate in sequence, and the outflow end of the proportional pressure-reducing valve communicates with the oil cylinders; and the force sensors are connected with the signal input end of the measurement and control system through force signal transformer, and the signal output end of the measurement and control system is connected with the proportional pressure-reducing valve. The multi-oil cylinder axial loading system provided by the invention can provide double loading force of spring preloading and hydraulic follow-up loading, loading force is stable, and the adjustable range is large.
Description
Technical field
The present invention relates to bearing test technical field, specifically a kind of Multi-cylinder axial loading system.
Background technology
Bearing is the key foundation parts in all kinds of equipment manufacturings, and the quality of its quality directly decides the property of equipment
Energy, reliability and life-span；Due to bearing work under bad environment, the load working condition that bears is complicated, will have long enough even to fill
It is non-maintaining etc. for life cycle management, countershaft on testing machine must make during designing, developing and manufacturing
The checking of corresponding simulated condition, provides reliable test data to study, designing, manufacture and use, and is design, the manufacture of bearing
Foundation is provided with using.
In the test of bearing, the actual condition to bearing is needed to be simulated, this will apply one in bearing working
Fixed loading force.Chinese patent " 201510919515.6 " discloses a kind of revolving part axial loading device, by adjusting spring
To adjust loading force.But the patent applies loading force only with spring, due to the force feature of spring, it is impossible to enough to realize loading
Automatization's adjustment of power, while the adjusting range of loading force is also very limited.Known, the axially loaded of bearing can adopt liquid
The mode of pressure, has the advantages that response is fast, control accuracy is high, but yet suffers from some shortcomings, particularly dead-time problem can be right
Bearing test causes large effect.
The content of the invention
In order to solve deficiency of the prior art, the present invention provides a kind of Multi-cylinder axial loading system, can export bullet
Spring loading force and Combined hydraulic loading force, meet the testpieces requirement big to loading force claimed range, can automatically adjust output
Power, and ensure that the requirement in bearing test to minimum preload.
To achieve these goals, the concrete scheme that adopts of the present invention for：
A kind of Multi-cylinder axial loading system, by the conduction of hydraulic system, charger, power and measurement apparatus and survey that set gradually
Control system constitute, TT＆C system also with hydraulic system feedback link；The charger is by the load cylinder cover plate being set up in parallel
Constitute with cylinder body, it is annular in shape uniform on cylinder body and alternating opens up several through holes and several blind holes, the wherein opening of blind hole
Dorsad load cylinder cover plate, is provided with spring in blind hole, is provided with Cylinder Plunger in through-holes, and through hole is common with Cylinder Plunger
Constitute oil cylinder；
The power conduction and measurement apparatus include bearing ring, and spring and oil cylinder setting are pressed close in the force side of bearing ring, bearing ring
Non-stress end is also annularly evenly arranged with several force transducers；The hydraulic system includes fuel tank, the fuel feeding being sequentially communicated
Pump assembly, overflow valve and proportional pressure-reducing valve, the outflow end of proportional pressure-reducing valve are connected with oil cylinder；The force transducer is believed by power
Number transmitter is connected with the signal input part of the TT＆C system, and the signal output part of TT＆C system is connected with proportional pressure-reducing valve
Connect.
One end that the load cylinder cover plate presses close to cylinder body has dug ring shaped oil passage, load cylinder cover plate away from cylinder body
End offers fuel feed hole, and fuel feed hole is connected with ring shaped oil passage by being opened in the oil input channel inside load cylinder cover plate, the ratio
The outflow end of example air relief valve is connected with fuel feed hole by oil fuel tube；The section of the ring shaped oil passage is rectangle.
The fuel feed hole is additionally provided with exhaust bolt.
The load cylinder cover plate and cylinder body are cylinder-like structure.
Bushing is installed between the cylinder body and oil cylinder, the plunger of oil cylinder is realized close by y-type seal ring and O-ring seal
Envelope.
Pressure transducer is additionally provided between the proportional pressure-reducing valve and oil cylinder.
Oily filter is additionally provided between the fuel tank and fuel feeding pump assembly.
The hydraulic system also includes the Air cooler cooled down to the hydraulic oil in work.
The oil cylinder is also connected with fuel tank by return line, and oily filter is additionally provided with return line.
Beneficial effect：
1st, the present invention can be with delivery spring and Combined hydraulic loading force, using the teaching of the invention it is possible to provide large-scale loading force, meets different tests
The demand of part；
2nd, spring bias provide the minimum pre-load power needed for subjects, and hydraulic loaded power passes through electrical-liquid control reality
The steady output of existing loading force, this version can meet minimum preload demand of the subjects in process of the test,
The dead band of hydraulic loading system is avoided simultaneously, meets requirement of the test mechanism to big load on；
3rd, Multi-cylinder axial loading system is due to installing force sensor, it is achieved that closed loop control, by examining force-measuring sensing
The signal of device, can effectively monitor the output of spring bias and hydraulic loaded power, and real-time response fault alarm in real time, should
System is avoided when not having power to export because of hydraulic loading system failure in testing, it is impossible to is ensured minimum preload and is caused testpieces
The situation of transient breakdown.
Description of the drawings
Fig. 1 is overall structure diagram；
Fig. 2 is charger structural representation；
Fig. 3 is hydraulic system principle figure；
Fig. 4 is loading force curve of output schematic diagram.
Reference：1st, load cylinder cover plate, 2, cylinder body, 3, oil cylinder, 4, bushing, 5, y-type seal ring, 6, O-ring seal,
7th, spring, 8, bearing ring, 9, force transducer, 10, fuel tank, 11, fuel feeding pump assembly, 12, overflow valve, 13, proportional pressure-reducing valve, 14,
Pressure transducer, 15, Air cooler, 16, oil filter.
Specific embodiment
Embodiments of the present invention are illustrated below according to accompanying drawing.
As shown in Figures 1 to 3, a kind of Multi-cylinder axial loading system, by the hydraulic system, charger, power that set gradually
Conduction and measurement apparatus and TT＆C system composition, TT＆C system also with hydraulic system feedback link, realize closed loop control.Hydraulic pressure system
Unite for driving force being provided to charger, loading force is converted into by charger and is applied in power conduction and measurement apparatus, power
Loading strength is passed to into TT＆C system while loading force is passed to testpieces by conduction and measurement apparatus, then by TT＆C system
Control signal is fed back to into hydraulic system after analyzing and processing, the purpose of real-time adjustment loading force is realized.
The charger is made up of the load cylinder cover plate 1 and cylinder body 2 being set up in parallel, and load cylinder cover plate 1 and cylinder
Body 2 is fixedly connected by several equally distributed screws annular in shape.It is annular in shape uniform and alternating opens up several on cylinder body 2
Through hole and several blind holes, the wherein opening of blind hole dorsad load cylinder cover plate 1, is provided with spring 7, in through-holes in blind hole
Cylinder Plunger is provided with, through hole collectively forms oil cylinder 3 with Cylinder Plunger.The power conduction and measurement apparatus include bearing ring 8, hold
Spring 7 is pressed close in the force side of pressure ring 8 and oil cylinder 3 is arranged, and the non-stress end of bearing ring 8 is also annularly evenly arranged with several power
Sensor 9, preferably 3.The hydraulic system includes fuel tank 10, fuel feeding pump assembly 11, overflow valve 12 and the ratio being sequentially communicated
Example air relief valve 13, the outflow end of proportional pressure-reducing valve 13 are connected with oil cylinder 3.The force transducer 9 by force signal transmitter with
The signal input part of the TT＆C system is connected, and the signal output part of TT＆C system is connected with proportional pressure-reducing valve.
The side that the load cylinder cover plate 1 presses close to cylinder body 2 has dug ring shaped oil passage, and load cylinder cover plate 1 is away from cylinder body 2
Side offer fuel feed hole, fuel feed hole is connected with ring shaped oil passage by being opened in the oil input channel inside load cylinder cover plate 1, institute
The outflow end for stating proportional pressure-reducing valve 13 is connected with fuel feed hole by oil fuel tube.The section of the ring shaped oil passage is rectangle, in annular
Sealing ring is also respectively provided with inside and outside oil duct, sealing ring is embedded the side for pressing close to oil cylinder 2 in load cylinder cover plate 1.Institute
State fuel feed hole and be additionally provided with exhaust bolt.
Used as a kind of preferred version, the load cylinder cover plate 1 and cylinder body 2 are cylinder-like structure, are arranged when in use
Do not contact in the rotating shaft of bearing tester but with rotating shaft, and be integrally fixed on the body of bearing tester.Simultaneously in rotating shaft
It is upper to increase an axially loaded bearing for being used to bear axial load and axial load is passed to test bearing, axially loaded axle
The inner ring for holding is fixedly connected with rotating shaft, and outer ring is fixedly connected a bearing block, and the bearing ring 8 and force transducer 9 are arranged at
In bearing block.The axially loaded power of the oil cylinder 3 and spring 7 can will be applied to load bearings by pressure-bearing also 8 and bearing block
On, and then axially loaded power is passed to into test bearing by other structures.
Bushing 4 is installed between the cylinder body 2 and oil cylinder 3, the plunger of oil cylinder 3 passes through y-type seal ring 5 and O-ring seal 6
Realize sealing.Using multi-sealing structure, the situation of the hydraulic fluid leak often occurred in can effectively preventing hydraulic loaded mode.
Pressure transducer 14 is additionally provided between the proportional pressure-reducing valve 13 and oil cylinder 3, is exported to oil for real-time monitoring
The oil pressure of cylinder 3.Oil filter 16 is additionally provided between the fuel tank 10 and fuel feeding pump assembly 11, was carried out for the hydraulic oil to circulating
Filter, filters impurity, extension fixture service life.
The proportional pressure-reducing valve 13 is preferably three way type proportional pressure-reducing valve.The oil cylinder 3 also passes through return line and fuel tank
10 are connected, and oil filter 16 is additionally provided with return line.The hydraulic system also includes carrying out the hydraulic oil in work cold
But Air cooler 15.
The present invention the course of work be：
Spring 7 applies spring bias to bearing ring 8 all the time.Hydraulic oil in fuel tank 10 is flowed in the presence of fuel feeding pump assembly 11
Voltage stabilizing is carried out in entering overflow valve 12, is then delivered in proportional pressure-reducing valve 13；Adjust after oil pressure successively via proportional pressure-reducing valve 13
Send in oil cylinder 3 through oil fuel tube, fuel feed hole, oil input channel and ring shaped oil passage, it is middle also to pass through 14 real-time monitoring of pressure transducer
Oil pressure；To on bearing ring 8, bearing ring 8 passes through bearing block by spring bias and hydraulic pressure to the plunger output hydraulic pressure loading force of oil cylinder 3
Loading force all passes to axially loaded bearing, and then axially loaded bearing passes through other structures（The shaft shoulder of axle is tested for example）To add
Carry power to be applied on test bearing；The loading force that the sensing bearing ring 8 of force transducer 9 bears（And the loading force of transmission）, and lead to
Exertin signal transmitting device is converted into standard current signal conveying TT＆C system, and TT＆C system is collected which after standard current signal
Digital signal is converted into, and proportional pressure-reducing valve 13 is transmitted further to as feedback information after regulation algorithm process set in advance,
Proportional pressure-reducing valve 13 is adjusted to output oil pressure in the presence of feedback information in time, to meet test in different time sections pair
The demand of axially loaded power.
The concrete operation step of loading procedure is：
Step one, loading the starting stage, add as the presence of 7 loading force of spring causes loading system to export preload all the time
Power is carried, testpieces can be so given（Such as angular contact ball bearing）Pretightning force is provided.
Step 2, testpieces start rotation after, with the lifting of rotating speed, hydraulic loaded power is gradually risen to now
Loading force is automatically adjusted according to the requirement passing ratio air relief valve 13 of test.
Step 3, after off-test, hydraulic loaded power is gradually lowered, and final loading system reforms into only spring
Loading force.
The output of loading force is as shown in Figure 4.In the test preproduction phase, from 0 to the t1 moment, testpieces is subject to preload all the time
Power N1.When on-test from t1 to t2 the moment, hydraulic system start working, loading force be gradually increased to test needed for loading force
N2, when off-test from t3 to t4 the moment, hydraulic loaded power is gradually decrease to 0 from N2, and now loading system is appointed and so maintained
Preload exports N1.
In whole process of the test, testpieces applies the active force not less than spring bias all the time.The present invention meets
The minimum preload demand of subjects, it is to avoid hydraulic loading system work dead band, while it also avoid because of hydraulic system
Disorderly closedown does not have the situation of power output and the damage of caused testpieces.
In the other embodiment of the present invention, such as test axle is shorter, it is difficult to which charger is set in test axle
In the case of, the load cylinder cover plate 1 and cylinder body 2 could be arranged to disc structure, be arranged on test shaft end, then by plus
Carry set or load the modes such as connecting rod and loading force is applied in load bearings, and then pass to test bearing.
Claims (10)
1. a kind of Multi-cylinder axial loading system, it is characterised in that：By hydraulic system, charger, the power conduction for setting gradually
And measurement apparatus and TT＆C system composition, TT＆C system also with hydraulic system feedback link；
The charger is by the load cylinder cover plate being set up in parallel（1）And cylinder body（2）Composition, in cylinder body（2）It is upper annular in shape equal
Even and alternating opens up several through holes and several blind holes, wherein the opening of blind hole dorsad load cylinder cover plate（1）, in blind hole
It is provided with spring（7）, Cylinder Plunger is provided with through-holes, through hole collectively forms oil cylinder with Cylinder Plunger（3）；
Power conduction and measurement apparatus, including bearing ring（8）, bearing ring（8）Force side press close to spring（7）And oil cylinder（3）
Arrange, bearing ring（8）Non-stress end be also annularly evenly arranged with several force transducers（9）；
The hydraulic system includes the fuel tank being sequentially communicated（10）, fuel feeding pump assembly（11）, overflow valve（12）And proportional pressure-reducing valve
（13）, proportional pressure-reducing valve（13）Outflow end and oil cylinder（3）It is connected；
The force transducer（9）It is connected with the signal input part of the TT＆C system by force signal transmitter, TT＆C system
Signal output part be connected with proportional pressure-reducing valve.
2. a kind of Multi-cylinder axial loading system as claimed in claim 1, it is characterised in that：The load cylinder cover plate（1）
Press close to cylinder body（2）One end dug ring shaped oil passage, load cylinder cover plate（1）Away from cylinder body（2）One end offer fuel feed hole,
Fuel feed hole is by being opened in load cylinder cover plate（1）Internal oil input channel is connected with ring shaped oil passage, the proportional pressure-reducing valve（13）
Outflow end connected with fuel feed hole by oil pipe；The section of the ring shaped oil passage is rectangle.
3. a kind of Multi-cylinder axial loading system as claimed in claim 2, it is characterised in that：The fuel feed hole is additionally provided with row
Gas screw.
4. a kind of Multi-cylinder axial loading system as claimed in claim 1, it is characterised in that：The load cylinder cover plate（1）
And cylinder body（2）It is cylinder-like structure.
5. a kind of Multi-cylinder axial loading system as claimed in claim 1, it is characterised in that：The cylinder body（2）And oil cylinder（3）
Between bushing is installed（4）, oil cylinder（3）Plunger pass through y-type seal ring（5）And O-ring seal（6）Realize sealing.
6. a kind of Multi-cylinder axial loading system as claimed in claim 1, it is characterised in that：The proportional pressure-reducing valve（13）With
Oil cylinder（3）Between be additionally provided with pressure transducer（14）.
7. a kind of Multi-cylinder axial loading system as claimed in claim 1, it is characterised in that：The fuel tank（10）And oil feed pump
Unit（11）Between be additionally provided with oily filter（16）.
8. a kind of Multi-cylinder axial loading system as claimed in claim 1, it is characterised in that：It is right that the hydraulic system also includes
The Air cooler cooled down by hydraulic oil in work（15）.
9. a kind of Multi-cylinder axial loading system as claimed in claim 1, it is characterised in that：The oil cylinder（3）Also pass through back
Oil pipe line and fuel tank（10）It is connected, oily filter is additionally provided with return line（16）.
10. a kind of Multi-cylinder axial loading system as claimed in claim 1, it is characterised in that：The force transducer（9）It is total
Three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611218871.6A CN106525431B (en) | 2016-12-26 | 2016-12-26 | Multi-cylinder axial loading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611218871.6A CN106525431B (en) | 2016-12-26 | 2016-12-26 | Multi-cylinder axial loading system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106525431A true CN106525431A (en) | 2017-03-22 |
| CN106525431B CN106525431B (en) | 2022-09-13 |
Family
ID=58338006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611218871.6A Active CN106525431B (en) | 2016-12-26 | 2016-12-26 | Multi-cylinder axial loading system |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1316580A (en) * | 1969-10-10 | 1973-05-09 | Jones Ltd George | Jacking devices |
| JPH0212999U (en) * | 1988-07-11 | 1990-01-26 | ||
| CN101963548A (en) * | 2010-09-21 | 2011-02-02 | 吉林大学 | Numerical control capstan turret reliability testing system with electro-hydraulic servo loading device |
| CN102607846A (en) * | 2012-03-08 | 2012-07-25 | 江苏大学 | Comprehensive test stand for water-lubricated bearings for pumps |
| CN102620935A (en) * | 2012-04-10 | 2012-08-01 | 洛阳轴研科技股份有限公司 | Loading device of high-speed bearing tester |
| CN102636367A (en) * | 2012-04-23 | 2012-08-15 | 浙江大学 | Multi-degree-of-freedom dynamic loading device for simulating wind power and ocean current load |
| JP2013181960A (en) * | 2012-03-05 | 2013-09-12 | Mitsubishi Heavy Ind Ltd | Bearing testing device and method for controlling bearing testing device |
| CN204359529U (en) * | 2014-12-15 | 2015-05-27 | 中国燃气涡轮研究院 | A kind of power load charger for aircraft bearing exerciser |
| CN105465058A (en) * | 2016-01-29 | 2016-04-06 | 洛阳理工学院 | Loading pressurizer of rolling bearing service life tester |
-
2016
- 2016-12-26 CN CN201611218871.6A patent/CN106525431B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1316580A (en) * | 1969-10-10 | 1973-05-09 | Jones Ltd George | Jacking devices |
| JPH0212999U (en) * | 1988-07-11 | 1990-01-26 | ||
| CN101963548A (en) * | 2010-09-21 | 2011-02-02 | 吉林大学 | Numerical control capstan turret reliability testing system with electro-hydraulic servo loading device |
| JP2013181960A (en) * | 2012-03-05 | 2013-09-12 | Mitsubishi Heavy Ind Ltd | Bearing testing device and method for controlling bearing testing device |
| CN102607846A (en) * | 2012-03-08 | 2012-07-25 | 江苏大学 | Comprehensive test stand for water-lubricated bearings for pumps |
| CN102620935A (en) * | 2012-04-10 | 2012-08-01 | 洛阳轴研科技股份有限公司 | Loading device of high-speed bearing tester |
| CN102636367A (en) * | 2012-04-23 | 2012-08-15 | 浙江大学 | Multi-degree-of-freedom dynamic loading device for simulating wind power and ocean current load |
| CN204359529U (en) * | 2014-12-15 | 2015-05-27 | 中国燃气涡轮研究院 | A kind of power load charger for aircraft bearing exerciser |
| CN105465058A (en) * | 2016-01-29 | 2016-04-06 | 洛阳理工学院 | Loading pressurizer of rolling bearing service life tester |
Non-Patent Citations (1)
| Title |
|---|
| 潘奔流等: "高速电主轴轴承性能试验台的研制", 《轴承》 * |
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| CN106525431B (en) | 2022-09-13 |
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