CN207487969U - A kind of testing large rotating machinery bearing shell performance and the multi-function test stand in service life - Google Patents
A kind of testing large rotating machinery bearing shell performance and the multi-function test stand in service life Download PDFInfo
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- CN207487969U CN207487969U CN201721585313.3U CN201721585313U CN207487969U CN 207487969 U CN207487969 U CN 207487969U CN 201721585313 U CN201721585313 U CN 201721585313U CN 207487969 U CN207487969 U CN 207487969U
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- bearing shell
- bent axle
- connecting rod
- acquisition module
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Abstract
The utility model belongs to test platform field, and disclose a kind of testing large rotating machinery bearing shell performance and the multi-function test stand in service life, mainly include bent axle, multiple bearing blocks and Duo Gen connecting rods including mechanical module, power plant module and control acquisition module, mechanical module；Power plant module includes rotation load-on module and radial loaded module；Acquisition module is controlled to include control module and acquisition module, acquisition module is torquemeter, thermocouple, acceleration transducer；Control module the torque and rotating speed of bent axle are monitored in real time by the torquemeter and by thermocouple and acceleration transducer to bearing shell to be tested into trip temperature and vibration monitoring；The utility model realizes accelerated life test：The radial loading device of the utility model is hydraulic cylinder, can export the alternating load of different loads magnitude, and rotation loading device is variable-frequency motor, can export different rotating speed and torque, therefore can realize bearing shell accelerated life test, shorten test period.
Description
Technical field
The utility model belongs to test platform field, more particularly, to a kind of testing large rotating machinery bearing shell
Performance and the multi-function test stand in service life.
Background technology
Key components and parts of the bearing shell as large rotating machinery, safety and reliability are most important to entire unit.
Large axle bush operating during the work time and deterioration law will be seen that by certain performance and life test, contribute to more
The bearing shell service life is predicted well and bearing shell is safeguarded.
There is no the standard life testing machine for large-scale bearing in bearing test field at present, but still have and much grind
The person of studying carefully voluntarily has developed the testing machine suitable for different type sliding bearing.Since experiment has to simulation bearing shell in practical machine
Running environment on device so each building block technique details of current sliding bear experiment machine may be different, but substantially forms
It is essentially identical, mainly it is made of parts such as mechanical module, power plant module, lubrication module and control acquisition modules.
The country has gradually formed the manufacturing method and experience of sliding bearing experimental platform at present, but generally also exist with
Lower Railway Project.
1) test sample amount is small
It must coordinate during due to bearing shell performance or life test with axis, the structures shape of axis once tests the number of bearing shell
It measures, under normal circumstances no more than 3.
2) the life test period is long
Since fatigue life result has dispersibility, single result of the test does not have convincingness, it is therefore desirable to carry out various
This experiment and a large amount of test data is counted, cause the life test period long.
3) accuracy is not high
Since testing stand mechanical structure or loaded load can not accurately simulate the situation of bearing shell reality completely, cause to test
As a result it is inaccurate.
Utility model content
For the disadvantages described above or Improvement requirement of the prior art, the utility model provides a kind of testing large rotating machinery
With the performance of bearing shell and the multi-function test stand in service life, it will be appreciated that large axle bush operating during the work time and rule of degenerating
Rule helps preferably to predict the bearing shell service life and bearing shell is safeguarded.
To achieve the above object, according to the utility model, a kind of performance of testing large rotating machinery bearing shell is provided
And the multi-function test stand in service life, which is characterized in that including mechanical module, power plant module and control acquisition module, wherein, it is described
Mechanical module mainly includes bent axle, multiple bearing blocks and Duo Gen connecting rods, wherein, install at least two on the trunnion of the bent axle
The bearing block, for installing main bearing shell to be tested, the connecting rod of every connecting rod between the bearing block and the trunnion
Stub end is may be rotatably mounted at respectively on the rod journal of the bent axle, between the connecting rod and the rod journal
Connecting rod bearing shell to be tested is installed；
The power plant module includes rotation load-on module and radial loaded module, and the rotation load-on module includes variable-frequency electric
Machine and shaft coupling, the variable-frequency motor are connect by the shaft coupling with one end of the bent axle, for driving the bent axle
Rotation；The radial loaded module includes multiple hydraulic cylinders, and the piston rod of each hydraulic cylinder is rotatably connected respectively right
Answer the small end of connecting rod end of connecting rod；
The control acquisition module includes control module and acquisition module, and the acquisition module includes torquemeter, acceleration
Sensor and multiple thermocouple thermometers, the torquemeter are mounted on one end of the close shaft coupling of the bent axle and should
Torquemeter is connect with the control module, and the acceleration transducer is attached on main bearing seat and the acceleration transducer and institute
State control module connection, each thermocouple sensor probe be each passed through behind bearing block or big end end with it is each to be measured
The bearing shell contact of examination, and each thermocouple sensor probe is connect respectively with the control module.
In the utility model, wherein the connecting rod bearing shell is respectively disposed on three adjacent rod journals, positioned at centre
Rod journal length be 2 times of rod journal length adjacent thereto, to ensure bent axle stress symmetrical balance.
In general, it can obtain down the above technical solutions conceived by the present invention are compared with the prior art,
Row advantageous effect：
1) the utility model realizes that polymorphic type bearing shell is tested jointly：Due to using bent axle knot in this testing stand mechanical structure
Structure simultaneously coordinates connecting rod and bent axle cooperation with bearing shell, the test of main bearing shell can not only be realized, and at the same time pitman shaft can be realized
Watt test.
2) accuracy is high：The utility model builds mechanical structure based on bent axle, and connecting rod and bent axle are coordinated, very greatly
Degree reduces the working environment of actual set, further simulates actual conditions, theoretically so that experiment accuracy greatly carries
It is high.
3) the utility model expands test sample quantity：The utility model uses symmetrical balance type bent axle, primary to test
It can realize the test of more set bearing shells.
4) the utility model realizes multifunctional state, provides temperature monitoring, vibration monitoring, life test.
5) the utility model realizes accelerated life test：The radial loading device of the utility model is hydraulic cylinder, can
The alternating load of different loads magnitude is exported, rotation loading device is variable-frequency motor, can export different rotating speed and torque, because
This can realize bearing shell accelerated life test, shorten test period.
Description of the drawings
Fig. 1 is the structural schematic block diagram of the utility model；
Fig. 2 is the structure diagram of the utility model；
Fig. 3 is the temperature liter of the bearing shell on trunnion in the utility model and vibration monitoring schematic diagram；
Fig. 4 is that the temperature of the bearing shell on the rod journal that length is larger in the utility model rises monitoring schematic diagram
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention is further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.In addition, institute in the various embodiments of the present invention described below
The technical characteristic being related to can be combined with each other as long as they do not conflict with each other.
With reference to Fig. 1~Fig. 4, a kind of performance of testing large rotating machinery bearing shell and the multi-function test stand in service life, packet
Mechanical module 2, power plant module, lubrication module 3 and control acquisition module 5 are included, wherein,
The mechanical module 2 mainly includes bent axle 10, multiple main bearing seats 9 and Duo Gen connecting rods 7, wherein, the bent axle 10
At least two trunnions 12 on the main bearing seat 9 can be installed, and the multiple connecting rod 7 can be rotatably installed in bent axle respectively
On 10 rod journal 16, for installing main bearing shell 11 to be tested between the main bearing seat 9 and the trunnion 12,
And connecting rod bearing shell 8 to be measured is installed between the connecting rod 7 and the rod journal 16.
The power plant module includes rotation load-on module 4 and radial loaded module 1, and the rotation load-on module 4 includes becoming
Frequency motor 13 and shaft coupling 14, the variable-frequency motor 13 are connect by the shaft coupling 14 with one end of the bent axle 10, with
It is rotated in driving the bent axle 10；The radial loaded module 1 includes multiple hydraulic cylinders 6, the piston rod of each hydraulic cylinder 6
It is rotatably connected respectively in the small head end of the connecting rod 7；
The lubrication module 3 is used for bent axle 10, main bearing seat 9, connecting rod 7 and connecting rod bearing shell 8 and main bearing shell to be tested
11 are lubricated；
The control acquisition module 5 includes control module and acquisition module, and the acquisition module includes torquemeter 15, accelerates
Sensor 17 and multiple thermocouple thermometers are spent, the torquemeter 15 is mounted on the close shaft coupling 14 of the bent axle 10
One end and torquemeter 15 is connect with control module, is monitored and is transmitted in real time for the torque to bent axle 10 and rotating speed
To the control module, the thermocouple sensor is divided into main bearing shell thermocouple thermometer 18 and connecting rod bearing shell thermocouple thermometer
19, main bearing shell thermocouple thermometer 18 and connecting rod bearing shell thermocouple thermometer 19 respectively with main bearing shell 11 to be tested and pitman shaft
Watts 8 contacts, and main bearing shell thermocouple thermometer 18 and connecting rod bearing shell thermocouple thermometer 19 are connect respectively with control module, with
Temperature signal for connecting rod bearing shell 8 to be tested and the warm liter situation of main bearing shell 11 to be monitored and monitored in real time passes through electricity
Cable is transmitted to the control module, and the acceleration transducer 17 is attached on main bearing seat 9 and is connect with control module, for
It obtains the vibration signal generated when main bearing shell 11 to be tested is hit because wearing and is transmitted to the control module.
Further, wherein being respectively disposed with the connecting rod 7 on three adjacent rod journals 16, and positioned at intermediate company
The length of bar axle journal 16 is 2 times of the length of its adjacent rod journal 16.
First testing stand should be assembled before on-test, connecting rod bearing shell 8 to be tested and main shaft 11 are mounted on experiment
On platform, and corresponding sensor is installed, connection automatically controls and data acquisition equipment, opens oil pump and is lubricated, finally starts
Testing stand.
After testing equipment starts, by load Slow loading to rated load in 3h.
Fill it up with turn-on data collecting device after load, guarantee test platform is continuously run at this time, at any time monitors load, turn
The information such as speed, vibration, temperature, and record.
During experiment, as needed or timing carries out shutdown inspection, and when shutdown records corresponding downtime, and
Each connecting rod bearing shell 8 and main bearing shell 11 are measured in different moments wear extent data.Lossless spy can be carried out in the case of conditional
Triage is looked into, and records corresponding inspection data and inspection result, then proceeds by experiment, and record continues test period.
Failure inspection is carried out to connecting rod bearing shell 8 and main bearing shell 11 after experiment.Test mode includes scanning electron microscope and detects failure
Surface and lubricating oil progress the iron spectrum or spectrum analysis etc. to extraction.
Once after the test, the connecting rod bearing shell 8 of replaceable experiment and main bearing shell 11, and operating condition of test is adjusted as needed
Carry out test of many times.
As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not
To limit the utility model, any modification made within the spirit and principles of the present invention, equivalent replacement and change
Into etc., it should be included within the scope of protection of this utility model.
Claims (2)
1. a kind of testing large rotating machinery bearing shell performance and the multi-function test stand in service life, which is characterized in that including mechanical mould
Block, power plant module and control acquisition module, wherein, the mechanical module mainly includes bent axle, multiple bearing blocks and Duo Gen connecting rods,
At least two bearing blocks are installed, for pacifying between the bearing block and the trunnion on the trunnion of the bent axle
Fill main bearing shell to be tested, the big end end of every connecting rod is may be rotatably mounted at respectively on the rod journal of the bent axle, with
In installing connecting rod bearing shell to be tested between the connecting rod and the rod journal；
The power plant module includes rotation load-on module and radial loaded module, the rotation load-on module include variable-frequency motor and
Shaft coupling, the variable-frequency motor are connect by the shaft coupling with one end of the bent axle, for driving the bent axle rotation；
The radial loaded module includes multiple hydraulic cylinders, and the piston rod of each hydraulic cylinder is rotatably connected respectively in respective link
Small end of connecting rod end；
The control acquisition module includes control module and acquisition module, and the acquisition module includes torquemeter, acceleration sensing
Device and multiple thermocouple thermometers, the torquemeter are mounted on one end of the close shaft coupling of the bent axle and the torque
Instrument is connect with the control module, and the acceleration transducer is attached on main bearing seat and the acceleration transducer and the control
Molding block connects, and each thermocouple sensor probe is each passed through behind bearing block or big end end and each to be tested
Bearing shell contacts, and each thermocouple sensor probe is connect respectively with the control module.
2. a kind of testing large rotating machinery bearing shell performance according to claim 1 and the multi-function test stand in service life,
It is characterized in that, wherein the connecting rod bearing shell is respectively disposed on three adjacent rod journals, positioned at intermediate pitman shaft neck length
2 times for rod journal length adjacent thereto are spent, to ensure bent axle stress symmetrical balance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721585313.3U CN207487969U (en) | 2017-11-22 | 2017-11-22 | A kind of testing large rotating machinery bearing shell performance and the multi-function test stand in service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721585313.3U CN207487969U (en) | 2017-11-22 | 2017-11-22 | A kind of testing large rotating machinery bearing shell performance and the multi-function test stand in service life |
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| CN207487969U true CN207487969U (en) | 2018-06-12 |
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| CN201721585313.3U Active CN207487969U (en) | 2017-11-22 | 2017-11-22 | A kind of testing large rotating machinery bearing shell performance and the multi-function test stand in service life |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782555A (en) * | 2017-11-22 | 2018-03-09 | 华中科技大学 | A kind of testing large rotating machinery bearing shell performance and the multi-function test stand in life-span |
| CN113819958A (en) * | 2021-11-22 | 2021-12-21 | 三一重型装备有限公司 | Predictive maintenance system, predictive maintenance method and heading machine |
-
2017
- 2017-11-22 CN CN201721585313.3U patent/CN207487969U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782555A (en) * | 2017-11-22 | 2018-03-09 | 华中科技大学 | A kind of testing large rotating machinery bearing shell performance and the multi-function test stand in life-span |
| CN113819958A (en) * | 2021-11-22 | 2021-12-21 | 三一重型装备有限公司 | Predictive maintenance system, predictive maintenance method and heading machine |
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