CN112326247A - Fatigue life testing machine for high-speed rail bearing - Google Patents
Fatigue life testing machine for high-speed rail bearing Download PDFInfo
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- CN112326247A CN112326247A CN202011209636.9A CN202011209636A CN112326247A CN 112326247 A CN112326247 A CN 112326247A CN 202011209636 A CN202011209636 A CN 202011209636A CN 112326247 A CN112326247 A CN 112326247A
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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
- G01M13/045—Acoustic or vibration analysis
Abstract
The invention discloses a fatigue life testing machine for a high-speed rail bearing. This high-speed railway bearing fatigue life testing machine includes: the test head part, the electro-hydraulic servo loading system, the transmission system and the computer monitoring system; a bearing to be tested is arranged in the test head part; the transmission system and the electro-hydraulic servo loading system are connected with a bearing to be tested in the test head component; the computer monitoring system is electrically connected with the bearing to be tested; the electro-hydraulic servo loading system comprises an electro-hydraulic servo valve, a control device connected with the electro-hydraulic servo valve, an oil pressure generating assembly and an executing element; the control device is used for generating voltage difference to control the opening and closing of the electro-hydraulic servo valve and adjust the pressure of the electro-hydraulic servo valve; the oil pressure generating assembly is used for generating oil pressure; the electro-hydraulic servo valve is used for loading radial load to a bearing to be tested through an actuating element according to oil pressure. The invention can solve the problems of uncontrollable and unstable load value on the high-speed rail bearing tester, thereby improving the accuracy and effectiveness of test data.
Description
Technical Field
The invention relates to the field of bearing fatigue life tests, in particular to a fatigue life testing machine for a high-speed rail bearing.
Background
At present, the fatigue life and reliability of the bearing are still one of the key problems of domestic and foreign research. Since the factors influencing the fatigue life are too many and the bearing fatigue life theory still needs to be further improved, the targeted test is undoubtedly the only and effective way. The conventional life test method with low load and high rotation speed wastes time and labor, the reliability of the test result is unstable, the advanced bearing fatigue life strengthening test machine and the test method are just started in China, and the application range needs to be further expanded.
The existing bearing fatigue life testing machine has the following two modes. Firstly, possess mechanical connecting rod loading system's subway bearing testing machine, it includes experimental main part, experimental head, radial loading mechanism, axial loading mechanism, cooling mechanism, actuating mechanism and mounting plate constitute, experimental main part is installed on mounting plate, experimental head is installed respectively at the both ends of experimental main part, radially install respectively on mounting plate and be connected with experimental head with axial loading mechanism, cooling mechanism installs on mounting plate and be located the top of experimental main part, actuating mechanism installs on mounting plate and is connected with experimental main part. The load loading is realized by transferring the loaded load to the test bearing under the action of the loading oil cylinder and through the action of the second joint bearing, the third pin shaft, the hinge seat, the second connecting rod and the first connecting rod.
The oil-immersed rolling bearing life strengthening testing machine comprises a rack, a stirring oil supplementing device, a testing head component, a transmission system, a loading system, a signal amplifier, a temperature sensor, a vibration sensor and a computer monitoring system. The loading system, the test head component, the stirring oil supplementing device and the transmission system are all fixed on the rack; the transmission system is connected with the test head component; the testing head part is provided with a temperature sensor and a vibration sensor and is connected with a computer monitoring system through a signal amplifier. The computer monitoring system displays the temperature, vibration value, rotating speed, accumulated test time, vibration time domain and frequency domain graph of the test bearing, and the test bearing is automatically stopped when the temperature value or the vibration value of the test bearing is out of range. The load loading system comprises a coarse filter, a gear pump, an oil pump motor, a one-way valve, an overflow valve, a one-way electromagnetic directional valve, a fine filter, an energy accumulator, an electric contact pressure gauge, a radial stop valve, a radial pressure regulating valve, a radial pressure gauge, a radial electromagnetic directional valve, a radial loading oil cylinder, an axial stop valve, an axial pressure regulating valve, an axial pressure gauge, an axial electromagnetic directional valve, an axial loading oil cylinder and weights, and loading is realized by adopting a loading mode of manual weight loading and automatic pressure stabilization.
The loading mode of the load loading system of the bearing fatigue life testing machine has instability, the loading value has inaccuracy, and the load is partially consumed during load transmission, so that the effectiveness of test data is influenced to a certain extent, and the accuracy of the test data needs to be improved.
Disclosure of Invention
Therefore, the fatigue life testing machine for the high-speed rail bearing is needed to be provided to solve the problems that the load loading value on the high-speed rail bearing testing machine is uncontrollable and unstable, and therefore the accuracy and the effectiveness of test data are improved.
In order to achieve the purpose, the invention provides the following scheme:
a fatigue life testing machine for a high-speed rail bearing comprises: the test head part, the electro-hydraulic servo loading system, the transmission system and the computer monitoring system; a bearing to be tested is arranged in the test head component; the transmission system and the electro-hydraulic servo loading system are connected with a bearing to be tested in the test head part; the computer monitoring system is electrically connected with the bearing to be tested; the transmission system is used for driving the bearing to be tested to rotate; the electro-hydraulic servo loading system is used for loading radial load on the bearing to be tested; and the computer monitoring system is used for displaying the test data of the bearing to be tested.
The electro-hydraulic servo loading system comprises a control device, an oil pressure generating assembly, an electro-hydraulic servo valve and an executing element; the control device, the oil pressure generating assembly and the actuating element are all connected with the electro-hydraulic servo valve; the control device is used for generating a voltage difference so as to control the opening and closing of the electro-hydraulic servo valve and adjust the pressure of the electro-hydraulic servo valve; the oil pressure generating assembly is used for generating oil pressure; the electro-hydraulic servo valve is used for loading radial load to the bearing to be tested through the execution element according to the oil pressure.
Optionally, the control device comprises an input set potentiometer, a feedback potentiometer and a voltage-current conversion amplifier.
The input given potentiometer and the feedback potentiometer are connected in parallel; the input given potentiometer and the feedback potentiometer are electrically connected with the electro-hydraulic servo valve through the voltage-current conversion amplifier; the input given potentiometer is used for generating given voltage according to a given value; the feedback potentiometer is used for providing an initial voltage; the voltage-current conversion amplifier is used for generating a voltage difference according to a given voltage and the initial voltage and converting the voltage difference into a current difference; the current difference is used for controlling the opening and closing of the electro-hydraulic servo valve and adjusting the pressure of the electro-hydraulic servo valve.
Optionally, the oil pressure generating assembly includes an oil tank, a coarse filter, an oil pump motor, an oil pump, an overflow valve, a check valve, a fine filter, an electrical contact pressure gauge, and a stop valve.
The output shaft of the oil pump motor is connected with the oil pump, the oil inlet of the oil pump is connected with the oil tank pipeline through the coarse filter, the oil outlet of the oil pump is connected with one end of the check valve, the other end of the check valve is connected with one end of the fine filter, the check valve is connected with the overflow valve on the pipeline between the fine filter, the other end of the overflow valve is connected with the oil tank pipeline, the other end of the fine filter is respectively connected with the stop valve and the electric contact pressure gauge, and the other end of the stop valve is connected with the oil inlet of the electro-hydraulic servo valve.
Optionally, the actuator comprises a hydraulic cylinder, a loading rod and a pressure gauge; the loading port of the hydraulic cylinder is connected with the first oil port of the electro-hydraulic servo valve, the first oil port of the electro-hydraulic servo valve is connected with the pressure gauge on a pipeline between the loading ports of the hydraulic cylinder, the unloading port of the hydraulic cylinder is connected with the second oil port of the electro-hydraulic servo valve, and the loading rod is connected with the bearing to be tested.
Optionally, a wall hole is formed in the outer wall of the testing head component, and the loading rod is connected with the bearing to be tested through the wall hole.
Optionally, a supporting block is arranged on the outer wall of the test head part; the supporting block is used for supporting the loading rod.
Optionally, a plurality of first threaded holes are formed in the outer wall of the test head part, and a plurality of second threaded holes are formed in the supporting block; the supporting block passes through the first threaded hole and the second threaded hole and is fixed on the outer wall of the test head part by screws.
Optionally, a plurality of ventilation grooves are formed in the test head component.
Optionally, the fatigue life testing machine for the high-speed rail bearing further comprises a frame; the test head component and the transmission system are both fixed on the frame.
Optionally, the fatigue life testing machine for the high-speed rail bearing further comprises a wood cushion block; the test head part, the electro-hydraulic servo loading system and the transmission system are all arranged on the wood cushion block; the wood cushion block is used for moving the test head part, the electro-hydraulic servo loading system and the transmission system.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a fatigue life testing machine for a high-speed rail bearing. This high-speed railway bearing fatigue life testing machine includes: the test head part, the electro-hydraulic servo loading system, the transmission system and the computer monitoring system; the electro-hydraulic servo loading system comprises an electro-hydraulic servo valve, a control device connected with the electro-hydraulic servo valve, an oil pressure generating assembly and an executing element; the control device is used for generating voltage difference to control the opening and closing of the electro-hydraulic servo valve and adjust the pressure of the electro-hydraulic servo valve; the electro-hydraulic servo valve is used for loading radial load to the bearing to be tested through the execution element according to the oil pressure generated by the oil pressure generation assembly. The invention adopts the electro-hydraulic servo loading system to realize the control of the opening and closing and the pressure regulation of the electro-hydraulic servo valve, has simple operation, convenience, effectiveness and strong controllability, solves the problems of uncontrollable and unstable load value on a high-speed rail bearing tester, ensures that the test is carried out under the condition of stable load value, and further improves the accuracy and the effectiveness of test data.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a fatigue life testing machine for a high-speed rail bearing according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an electro-hydraulic servo loading system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the position of the load on the inner wall of the cavity of the test head member according to the embodiment of the present invention;
FIG. 4 is a schematic illustration of the position of the load on the outer wall of the trial head part provided by an embodiment of the invention;
fig. 5 is a schematic structural diagram of a position of the supporting block according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a schematic structural diagram of a fatigue life testing machine for a high-speed rail bearing according to an embodiment of the present invention.
Referring to fig. 1, the fatigue life testing machine for a high-speed rail bearing in the present embodiment includes: the device comprises a rack 1, a test head part 2, an electro-hydraulic servo loading system 4, a transmission system 3 and a computer monitoring system 5; a bearing to be tested is arranged in the test head part 2; the transmission system 3 and the electro-hydraulic servo loading system 4 are both connected with a bearing to be tested in the test head part 2; the computer monitoring system 5 is electrically connected with the bearing to be tested; the transmission system 3 is used for driving the bearing to be tested to rotate; the electro-hydraulic servo loading system 4 is used for loading radial load on the bearing to be tested; the computer monitoring system 5 is used for displaying test data of the bearing to be tested; the test data comprises bearing temperature, bearing vibration value, bearing rotating speed, bearing accumulated test time, bearing vibration time domain image and bearing vibration frequency domain image.
Fig. 2 is a schematic structural diagram of an electro-hydraulic servo loading system 4 according to an embodiment of the present invention. Referring to fig. 2, the electro-hydraulic servo loading system 4 includes a control device, an oil pressure generating assembly, an electro-hydraulic servo valve 416 and an actuator; the control device, the oil pressure generating assembly and the actuator are all connected to the electro-hydraulic servo valve 416; the control device is used for generating a voltage difference to control the opening and closing of the electro-hydraulic servo valve 416 and adjust the pressure of the electro-hydraulic servo valve 416; the oil pressure generating assembly is used for generating oil pressure; the electro-hydraulic servo valve 416 is used for loading radial load to the bearing to be tested through the actuator according to the oil pressure.
The control device comprises an input given potentiometer 411, a feedback potentiometer 412 and a voltage-current conversion amplifier 410; the input given potentiometer 411 and the feedback potentiometer 412 are connected in parallel; the input given potentiometer 411 and the feedback potentiometer 412 are electrically connected with the electro-hydraulic servo valve 416 through the voltage-to-current conversion amplifier 410; the input given potentiometer 411 is used for generating given voltage according to given value; the feedback potentiometer 412 is used for providing an initial voltage; the voltage-current conversion amplifier 410 is configured to generate a voltage difference according to a given voltage and the initial voltage, and convert the voltage difference into a current difference; the current difference is used to control the opening and closing of the electro-hydraulic servo valve 416 and to regulate the pressure of the electro-hydraulic servo valve 416.
The oil pressure generating assembly comprises an oil tank 401, a coarse filter 402, an oil pump motor 403, an oil pump 404, an overflow valve 405, a one-way valve 406, a fine filter 407, an electric contact pressure gauge 408 and a stop valve 409; an output shaft of the oil pump motor 403 is connected with the oil pump 404, an oil inlet of the oil pump 404 is connected with a pipeline of the oil tank 401 through the coarse filter 402, an oil outlet of the oil pump 404 is connected with one end of the check valve 406, the other end of the check valve 406 is connected with one end of the fine filter 407, a pipeline between the check valve 406 and the fine filter 407 is connected with the overflow valve 405, the other end of the overflow valve 405 is connected with the pipeline of the oil tank 401, the other end of the fine filter 407 is respectively connected with the stop valve 409 and the electric contact pressure gauge 408, and the other end of the stop valve 409 is connected with an oil inlet P of the electro-hydraulic servo valve 416sThe ends are connected.
The actuating elements comprise a hydraulic cylinder 414, a loading rod 415 and a pressure gauge 413; the loading port of the hydraulic cylinder 414 is connected with the first oil port a of the electro-hydraulic servo valve 416, the pressure gauge 413 is connected to a pipeline between the first oil port a of the electro-hydraulic servo valve 416 and the loading port of the hydraulic cylinder 414, the unloading port of the hydraulic cylinder 414 is connected with the second oil port b of the electro-hydraulic servo valve 416, and the loading rod 415 is connected with the bearing to be tested.
As an alternative embodiment, referring to fig. 3 to 5, a wall hole 201 is opened on the outer wall of the test head part 2, and the loading rod 415 is connected with the test bearing seat of the bearing to be tested through the wall hole 201. A supporting block 203 is arranged on the outer wall of the test head part 2; the support block 203 is used to support the loading rod 415. The support piece is a U-shaped groove. A plurality of first threaded holes 202 are formed in the outer wall of the test head part 2, and a plurality of second threaded holes 204 are formed in the supporting block 203; the supporting block 203 passes through the first threaded hole 202 and the second threaded hole 204 and is fixed on the outer wall of the test head part 2 by screws, so as to play a role in limiting the left-right shaking of the loading rod 415, stabilizing the supporting and reducing the vibration. In this embodiment, the outer wall of the head part 2 is provided with four first threaded holes 202 and four second threaded holes 204, the loading rod 415 is in contact with the test bearing seat 205 through a U-shaped groove on the outer wall of the head part 2 and a wall hole 201 on the outer wall of the head part 2, and the U-shaped groove is fixed on the outer wall of the head part 2 by screws through the four second threaded holes 204 on the U-shaped groove and the plurality of first threaded holes 202 on the outer wall of the head part 2.
As an optional implementation manner, a plurality of ventilation grooves are formed in the test head component 2, and the plurality of ventilation grooves serve as a cooling and lubricating system to play a role in heat dissipation.
As an optional implementation mode, the fatigue life testing machine for the high-speed rail bearing further comprises a frame 1 and a wood cushion block 6; the test head part 2 and the transmission system 3 are both fixed on the frame 1. The test head part 2, the electro-hydraulic servo loading system 4 and the transmission system 3 are all arranged on the wood cushion block 6; the wood cushion block 6 can facilitate the movement of the whole test bed formed by the test head part 2, the electro-hydraulic servo loading system 4 and the transmission system 3, and can also play a certain role in vibration reduction.
As an alternative embodiment, the computer monitoring system 5 is electrically connected with the bearing to be tested through a sensor group, wherein the sensor group comprises a temperature sensor, a vibration sensor, a rotating speed sensor and the like; the temperature sensor is used for collecting the temperature of the bearing, the vibration sensor is used for collecting the vibration value of the bearing, and the rotating speed sensor is used for collecting the rotating speed of the bearing. And the computer monitoring system 5 draws a bearing vibration time domain image and a bearing vibration frequency domain image according to the obtained bearing vibration value, and records the bearing accumulated test time. And the computer monitoring system 5 also displays the obtained bearing temperature, the bearing vibration value, the bearing rotating speed, the bearing accumulated test time, the bearing vibration time domain image and the bearing vibration frequency domain image.
The high-speed rail bearing fatigue life testing machine has the following realization principle:
when loaded, the load acts on the load lever 415 in the form of oil pressure, and is transmitted to the middle through the load lever 415 and the test bearing housing 205And (4) arranging the bearing to be tested on the outer ring. The electro-hydraulic servo loading system 4 changes the voltage difference through a control device, and then converts the voltage difference into the current difference to control the opening and closing of the electro-hydraulic servo valve 416, the control device is composed of a power supply, a voltage-current conversion amplifier 410, a command given part and a feedback part which are connected through a lead, the command given part and the feedback part are connected in parallel, and a given potentiometer of the command given part gives a value XiGenerating a voltage U1And initial voltage U of feedback potentiometer 412 of the feedback part2Generating a voltage difference, converting the two voltage values into current signals through the voltage-current conversion amplifier 410, applying the current signals to the electromagnetic coil of the electro-hydraulic servo valve 416, controlling the movement of the valve core of the electro-hydraulic servo valve 416, thereby performing the opening and closing of the electro-hydraulic servo valve 4166, and properly adjusting the XiSuitably varying the distance X that the electro-hydraulic servo valve 416 movesvAnd the voltage regulation is realized.
The oil pump motor 403 drives the oil pump 404 to provide oil and oil pressure, the oil pumped from the oil tank 401 needs to be filtered and controlled by the coarse filter 402, the overflow valve 405 is used for adjusting the oil pressure and protecting a pipeline, the check valve 406 prevents the oil pump motor 403 from stopping working, the oil flows reversely, the fine filter 407 further filters the oil, and the electric contact pressure gauge 408 is used for measuring and displaying initial pressure.
The fatigue life testing machine for the high-speed rail bearing is provided with the electro-hydraulic servo loading system 4, the opening and closing and the pressure regulation of the electro-hydraulic servo valve 416 are realized through the control of voltage and current, the operation is simple, the operation is convenient and effective, the controllability is strong, the test can be carried out under the condition that the load value is stable, and therefore the effectiveness of test data is improved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. The utility model provides a high-speed railway bearing fatigue life testing machine which characterized in that includes: the test head part, the electro-hydraulic servo loading system, the transmission system and the computer monitoring system; a bearing to be tested is arranged in the test head component; the transmission system and the electro-hydraulic servo loading system are connected with a bearing to be tested in the test head part; the computer monitoring system is electrically connected with the bearing to be tested; the transmission system is used for driving the bearing to be tested to rotate; the electro-hydraulic servo loading system is used for loading radial load on the bearing to be tested; the computer monitoring system is used for displaying test data of the bearing to be tested;
the electro-hydraulic servo loading system comprises a control device, an oil pressure generating assembly, an electro-hydraulic servo valve and an executing element; the control device, the oil pressure generating assembly and the actuating element are all connected with the electro-hydraulic servo valve; the control device is used for generating a voltage difference so as to control the opening and closing of the electro-hydraulic servo valve and adjust the pressure of the electro-hydraulic servo valve; the oil pressure generating assembly is used for generating oil pressure; the electro-hydraulic servo valve is used for loading radial load to the bearing to be tested through the execution element according to the oil pressure.
2. The fatigue life testing machine for the high-speed rail bearing according to claim 1, wherein the control device comprises an input given potentiometer, a feedback potentiometer and a voltage-current conversion amplifier;
the input given potentiometer and the feedback potentiometer are connected in parallel; the input given potentiometer and the feedback potentiometer are electrically connected with the electro-hydraulic servo valve through the voltage-current conversion amplifier; the input given potentiometer is used for generating given voltage according to a given value; the feedback potentiometer is used for providing an initial voltage; the voltage-current conversion amplifier is used for generating a voltage difference according to a given voltage and the initial voltage and converting the voltage difference into a current difference; the current difference is used for controlling the opening and closing of the electro-hydraulic servo valve and adjusting the pressure of the electro-hydraulic servo valve.
3. The fatigue life testing machine for the high-speed rail bearing according to claim 1, wherein the oil pressure generating assembly comprises an oil tank, a coarse filter, an oil pump motor, an oil pump, an overflow valve, a check valve, a fine filter, an electrical contact pressure gauge and a stop valve;
the output shaft of the oil pump motor is connected with the oil pump, the oil inlet of the oil pump is connected with the oil tank pipeline through the coarse filter, the oil outlet of the oil pump is connected with one end of the check valve, the other end of the check valve is connected with one end of the fine filter, the check valve is connected with the overflow valve on the pipeline between the fine filter, the other end of the overflow valve is connected with the oil tank pipeline, the other end of the fine filter is respectively connected with the stop valve and the electric contact pressure gauge, and the other end of the stop valve is connected with the oil inlet of the electro-hydraulic servo valve.
4. The fatigue life testing machine for the high-speed rail bearing according to claim 1, wherein the actuator comprises a hydraulic cylinder, a loading rod and a pressure gauge; the loading port of the hydraulic cylinder is connected with the first oil port of the electro-hydraulic servo valve, the first oil port of the electro-hydraulic servo valve is connected with the pressure gauge on a pipeline between the loading ports of the hydraulic cylinder, the unloading port of the hydraulic cylinder is connected with the second oil port of the electro-hydraulic servo valve, and the loading rod is connected with the bearing to be tested.
5. The fatigue life testing machine for the high-speed rail bearing according to claim 4, wherein a wall hole is formed in an outer wall of the testing head component, and the loading rod is connected with the bearing to be tested through the wall hole.
6. The fatigue life testing machine for the high-speed rail bearing according to claim 5, wherein a supporting block is arranged on the outer wall of the testing head part; the supporting block is used for supporting the loading rod.
7. The fatigue life testing machine for the high-speed rail bearing according to claim 6, wherein a plurality of first threaded holes are formed in an outer wall of the testing head component, and a plurality of second threaded holes are formed in the supporting block; the supporting block passes through the first threaded hole and the second threaded hole and is fixed on the outer wall of the test head part by screws.
8. The fatigue life testing machine for the bearing of the high-speed rail as claimed in claim 1, wherein a plurality of ventilation slots are formed on the testing head component.
9. The fatigue life testing machine for the high-speed rail bearing according to claim 1, further comprising a frame; the test head component and the transmission system are both fixed on the frame.
10. The fatigue life testing machine for the high-speed rail bearing according to claim 1, further comprising a wood pad block; the test head part, the electro-hydraulic servo loading system and the transmission system are all arranged on the wood cushion block; the wood cushion block is used for moving the test head part, the electro-hydraulic servo loading system and the transmission system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011209636.9A CN112326247A (en) | 2020-11-03 | 2020-11-03 | Fatigue life testing machine for high-speed rail bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011209636.9A CN112326247A (en) | 2020-11-03 | 2020-11-03 | Fatigue life testing machine for high-speed rail bearing |
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| CN112326247A true CN112326247A (en) | 2021-02-05 |
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| CN202011209636.9A Pending CN112326247A (en) | 2020-11-03 | 2020-11-03 | Fatigue life testing machine for high-speed rail bearing |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57179640A (en) * | 1981-04-28 | 1982-11-05 | Koyo Seiko Co Ltd | Method and apparatus for testing life of bearing |
| CN1900674A (en) * | 2006-07-13 | 2007-01-24 | 杭州轴承试验研究中心有限公司 | Reinforced test machine for rolling bearing life and reliability and its test method |
| CN103353398A (en) * | 2013-07-29 | 2013-10-16 | 洛阳Lyc轴承有限公司 | Radial loading mechanism for high-speed heavy haul railway bearing testing stand |
| CN205898599U (en) * | 2016-07-27 | 2017-01-18 | 国网江苏省电力公司连云港供电公司 | Servo loading device of high temperature friction testing machine |
| CN107626802A (en) * | 2017-09-18 | 2018-01-26 | 合肥学院 | Dynamic adjusts the apparatus and method of drawbead sheet forming flow resistance |
| CN207246160U (en) * | 2017-08-23 | 2018-04-17 | 洛阳大华智能科技有限公司 | A kind of safeguard protection electric control system |
| CN109506935A (en) * | 2018-03-30 | 2019-03-22 | 上海大学 | A kind of high-speed rail bearing fatigue life test machine with lubricating and cooling |
-
2020
- 2020-11-03 CN CN202011209636.9A patent/CN112326247A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57179640A (en) * | 1981-04-28 | 1982-11-05 | Koyo Seiko Co Ltd | Method and apparatus for testing life of bearing |
| CN1900674A (en) * | 2006-07-13 | 2007-01-24 | 杭州轴承试验研究中心有限公司 | Reinforced test machine for rolling bearing life and reliability and its test method |
| CN103353398A (en) * | 2013-07-29 | 2013-10-16 | 洛阳Lyc轴承有限公司 | Radial loading mechanism for high-speed heavy haul railway bearing testing stand |
| CN205898599U (en) * | 2016-07-27 | 2017-01-18 | 国网江苏省电力公司连云港供电公司 | Servo loading device of high temperature friction testing machine |
| CN207246160U (en) * | 2017-08-23 | 2018-04-17 | 洛阳大华智能科技有限公司 | A kind of safeguard protection electric control system |
| CN107626802A (en) * | 2017-09-18 | 2018-01-26 | 合肥学院 | Dynamic adjusts the apparatus and method of drawbead sheet forming flow resistance |
| CN109506935A (en) * | 2018-03-30 | 2019-03-22 | 上海大学 | A kind of high-speed rail bearing fatigue life test machine with lubricating and cooling |
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