CN111855212A - Device for detecting service performance of all-ceramic rolling bearing under ultralow-temperature wide-temperature-range working condition - Google Patents
Device for detecting service performance of all-ceramic rolling bearing under ultralow-temperature wide-temperature-range working condition Download PDFInfo
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- CN111855212A CN111855212A CN202010756966.3A CN202010756966A CN111855212A CN 111855212 A CN111855212 A CN 111855212A CN 202010756966 A CN202010756966 A CN 202010756966A CN 111855212 A CN111855212 A CN 111855212A
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Abstract
A device for detecting service performance of a full-ceramic rolling bearing under an ultralow-temperature wide-temperature-range working condition belongs to the technical field of bearing service performance testing devices. Full ceramic antifriction bearing service performance detection device includes work platform and vacuum sealed chamber under the wide temperature range operating mode of ultra-low temperature, be equipped with quick change test axle and temperature sensor in the vacuum sealed chamber, the one end of quick change test axle is the frustum of a cone structure, it is connected with the gyration main shaft, the other end of quick change test axle is the cylinder structure, the other end of quick change test axle is located to the examination bearing housing that awaits measuring, the outside of vacuum sealed chamber is provided with axial loading structure, radial loading structure and vibration sensor, the both sides of vacuum sealed chamber are provided with liquid nitrogen input port and liquid nitrogen delivery outlet respectively. The device for detecting the service performance of the all-ceramic rolling bearing under the ultralow temperature wide temperature range working condition can realize the accurate detection of the service parameters of the all-ceramic rolling shaft under the ultralow temperature wide temperature range working condition, and provides data support for the application and optimization of the all-ceramic rolling bearing.
Description
Technical Field
The invention relates to the technical field of bearing service performance testing devices, in particular to a device for detecting service performance of an all-ceramic rolling bearing under an ultralow-temperature wide-temperature-range working condition.
Background
The bearing is a key basic component of an industrial system, along with the development of diversification and precision of the industry, the use condition of the rolling bearing is increasingly harsh, and the traditional metal bearing product is difficult to meet the use requirement, so that a new bearing product is urgently needed to meet the use requirement of special working conditions and high precision. The all-ceramic bearing can be widely applied to the technical fields of high-precision numerical control machine tools, high-speed spindles, aerospace, ocean science and technology, nuclear industry, medical instruments, low-temperature engineering and other special working conditions, and has wide application prospect. However, the detection equipment for the service performance of the all-ceramic rolling bearing under special working conditions is not mature, and the application of the all-ceramic rolling bearing in related fields is limited.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a device for detecting the service performance of an all-ceramic rolling bearing under an ultralow-temperature wide-temperature-range working condition, so that the service parameters of the all-ceramic rolling shaft under the ultralow-temperature wide-temperature-range working condition can be accurately detected, and data support is provided for the application and optimization of the all-ceramic rolling bearing.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a device for detecting service performance of a full-ceramic rolling bearing under an ultralow-temperature wide-temperature-range working condition comprises a working platform and a vacuum sealed chamber arranged on the working platform;
a quick-change testing shaft and a temperature sensor for collecting the internal temperature of the vacuum sealed chamber are arranged in the vacuum sealed chamber, one end of the quick-change testing shaft is of a cone frustum structure, the quick-change testing shaft penetrates through the side wall of the vacuum sealed chamber and is connected with a rotary main shaft, and the rotary main shaft is connected with a working platform through a supporting seat; the other end of the quick-change testing shaft is of a cylindrical structure, and a bearing to be tested is sleeved at the other end of the quick-change testing shaft;
an axial loading structure for applying axial load to the bearing to be tested, a radial loading structure for applying radial load to the bearing to be tested and a vibration sensor for acquiring vibration signals of the bearing to be tested are arranged outside the vacuum sealed chamber;
and a liquid nitrogen input port and a nitrogen output port are respectively arranged on two sides of the vacuum sealed chamber.
Further, vacuum sealed chamber includes sealing connection's left end lid and right drum, the inboard of left end lid is provided with the recess, the recess with the outer wall of the quick change test axle other end passes through the bearing and connects, the right side wall of right drum with the junction of quick change test axle is provided with a plurality of negative pressure sealing ring.
Preferably, the lower part of the vacuum sealed chamber is connected with the working platform through axial rotation constraint, and the axial rotation constraint is an inverted T-shaped structure.
Furthermore, the axial loading structure adopts an axial loading connecting rod, and the axial loading connecting rod is fixedly connected with the left end cover.
Furthermore, the radial loading structure adopts a radial loading connecting rod, and the radial loading connecting rod is fixedly connected with the outer wall right below the vacuum sealed chamber.
Furthermore, the liquid nitrogen input port and the nitrogen output port are connected with a liquid nitrogen circulating system and used for adjusting the ultra-low temperature wide-temperature-range working condition in the vacuum closed chamber and the temperature in the vacuum closed chamber.
Furthermore, a conical table hole matched with one end of the quick-change testing shaft is formed in the left end of the rotary main shaft, and one end of the quick-change testing shaft is inserted into the conical table hole of the rotary main shaft and locked through a locking nut.
Furthermore, the right side of the bearing to be tested is in contact with a shaft shoulder of the quick-change testing shaft, and a first fixing cone clamp is arranged on the left side of the bearing to be tested and used for preventing the bearing to be tested from axially moving; and a second fixing cone clamp is arranged between the bearing to be tested and the inner wall of the vacuum closed chamber and is used for preventing the bearing to be tested from moving in the radial direction.
Furthermore, a liquid nitrogen inner ring channel is arranged inside the other end of the quick-change testing shaft.
Furthermore, the quick-change test shaft is made of a silicon nitride ceramic material.
The invention has the beneficial effects that:
1) the invention relates to a service performance test platform of an all-ceramic rolling bearing under an ultralow temperature wide temperature range working condition, which can detect service parameters of the all-ceramic rolling bearing under different temperatures, different loading conditions and different rotating speeds of an ultralow temperature environment according to detection requirements and provides data support for accurately evaluating the service performance of the all-ceramic rolling bearing under the ultralow temperature wide temperature range working condition;
2) the vacuum sealed chamber is used for providing guarantee for detecting service parameters of the all-ceramic rolling bearing, and a negative pressure sealing ring at the joint of the vacuum sealed chamber and the quick-change testing shaft further guarantees the vacuum sealing effect of the vacuum sealed chamber and prevents liquid nitrogen and/or nitrogen from leaking;
3) the axial loading connecting rod and the radial loading connecting rod are used for applying set load to the all-ceramic rolling bearing, so that the structure is simple, the detection cost is saved, and the loading is convenient;
4) the device is connected with a liquid nitrogen circulating system through a liquid nitrogen input port and a nitrogen output port, the ultra-low temperature wide temperature range working environment of the bearing to be tested is simulated through the liquid nitrogen circulating system, the contact area of the quick-change testing shaft and liquid nitrogen and/or nitrogen is increased through a liquid nitrogen inner ring channel of the quick-change testing shaft, and the temperature control range in the vacuum closed chamber is guaranteed to be 20 ℃ to 160 ℃;
5) through the conical connection of the quick-change testing shaft and the rotary main shaft, the rotary main shaft and the quick-change testing shaft can perform micro axial sliding under the condition of generating a large load, and the damage to the rotary main shaft or a connecting piece between the rotary main shaft and the rotary main shaft due to different deformation under the condition of large temperature difference is prevented;
6) the axial and radial play of the bearing to be tested is prevented through the first fixed cone clamp and the second fixed cone clamp, and the accuracy of service parameter extraction is guaranteed.
Additional features and advantages of the invention will be set forth in part in the detailed description which follows.
Drawings
FIG. 1 is a schematic structural diagram of a device for detecting service performance of an all-ceramic rolling bearing under an ultralow temperature wide temperature range working condition, according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an internal structure of a device for detecting service performance of an all-ceramic rolling bearing under an ultralow temperature wide temperature range working condition, according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a quick-change test shaft according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a left end cap of a vacuum-tight chamber according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a bearing to be tested according to an embodiment of the present invention.
Reference numerals in the drawings of the specification include:
1-a bearing to be tested, 2-a vacuum closed chamber, 3-a left end cover, 4-an axial loading connecting rod, 5-a liquid nitrogen inner ring channel, 6-a liquid nitrogen input port, 7-an axial rotation constraint, 8-a radial loading connecting rod, 9-a working platform, 10-a temperature sensor, 11-a quick-change testing shaft, 12-a supporting seat, 13-a rotary main shaft, 14-a negative pressure sealing ring, 15-a nitrogen output port, 16-a vibration sensor, 17-a fixed cone clamp II and 18-a fixed cone clamp I.
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.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a" and "an" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In order to solve the problems in the prior art, as shown in fig. 1 to 4, the invention provides a device for detecting the service performance of an all-ceramic rolling bearing under an ultralow-temperature wide-temperature-range working condition, which comprises a working platform 9 and a vacuum sealed chamber 2 arranged on the working platform 9;
a quick-change testing shaft 11 and a temperature sensor 10 for collecting the internal temperature of the vacuum sealed chamber 2 are arranged in the vacuum sealed chamber 2, one end of the quick-change testing shaft 11 is of a cone frustum structure, penetrates through the side wall of the vacuum sealed chamber 2 and is connected with a rotary main shaft 13, and the rotary main shaft 13 is connected with a working platform 9 through a supporting seat 12; the other end of the quick-change testing shaft 11 is of a cylindrical structure, and the bearing to be tested 1 is sleeved at the other end of the quick-change testing shaft 11;
an axial loading structure for applying axial load to the bearing 1 to be tested, a radial loading structure for applying radial load to the bearing 1 to be tested and a vibration sensor 16 for acquiring vibration signals of the bearing 1 to be tested are arranged outside the vacuum sealed chamber 2;
two sides of the vacuum sealed chamber 2 are respectively provided with a liquid nitrogen input port 6 and a nitrogen output port 15.
In this embodiment, as shown in fig. 1 to 5, the bearing 1 to be tested is an all-ceramic rolling bearing, service parameters of the bearing 1 to be tested, including temperature change in the vacuum sealed chamber 2 and vibration parameters of the bearing 1 to be tested when the bearing 1 to be tested is in operation, are extracted by the temperature sensor 10 and the vibration sensor 16, respectively, the temperature sensor 10 and the vibration sensor 16 are both connected to a computer through signal amplifiers, the collected temperature in the vacuum sealed chamber 2 and the vibration signals of the bearing 1 to be tested are sent to the computer for display and storage, preferably, the vibration sensor 16 is installed right above the outer wall of the vacuum sealed chamber 2 and at a position corresponding to the bearing 1 to be tested, a vibration signal analysis system on the computer analyzes the vibration signals collected by the vibration sensor 16 to obtain vibration parameters, when the vibration parameters exceed a set vibration parameter limit, the service time of the bearing 1 to be tested is recorded; the temperature sensor 10 adopts the prior art, a probe thereof penetrates through the right side wall of the vacuum sealed chamber 2 and is arranged in the vacuum sealed chamber 2, the temperature in the vacuum sealed chamber 2 is analyzed through a temperature data acquisition system on a computer, and the temperature change in the vacuum sealed chamber 2 is recorded; the service performance of the bearing 1 to be tested is obtained by recording the service time of the bearing 1 to be tested, the temperature change during service and the vibration parameters. Supporting seat 12 and work platform 9 fixed connection, gyration main shaft 13 passes supporting seat 12 and passes through the bearing with supporting seat 12 and be connected, it is concrete, supporting seat 12 fixed mounting is on work platform 9, supporting seat 12 is for being close to the open-ended cylinder structure in one side of vacuum sealed chamber 2, be used for supporting gyration main shaft 13, supporting seat 12 passes through the bearing with gyration main shaft 13 and is connected, there is certain distance between the left end of gyration main shaft 13 and the 2 right side walls of vacuum sealed chamber, in the time of the actual work, the right-hand member of gyration main shaft 13 is connected with inverter motor, it rotates to drive gyration main shaft 13 through inverter motor, and then drive quick change test axle 11 and the rotation of the bearing 1 that awaits measuring, inverter motor is connected with gyration main shaft 13 promptly, it realizes controlling the rotational speed of the bearing 1 that awaits measuring.
The vacuum sealed chamber 2 comprises a left end cover 3 and a right cylinder which are in sealing connection, a groove is arranged on the inner side of the left end cover 3, the groove is connected with the outer wall of the other end of the quick-change testing shaft 11 through a bearing, and a plurality of negative pressure sealing rings 14 are arranged at the joint of the right side wall of the right cylinder and the quick-change testing shaft 11. In this embodiment, the number of the negative pressure sealing rings 14 is 4, and 4 negative pressure sealing rings 14 are installed at the shaft shoulder of the quick-change testing shaft 11, so that the vacuum sealing effect of the vacuum sealed chamber 2 is effectively ensured, and leakage of liquid nitrogen and/or nitrogen gas is prevented. Preferably, the lower part of the vacuum sealed chamber 2 is connected with the working platform 9 through an axial rotation constraint 7, the axial rotation constraint 7 is an inverted T-shaped structure and is fixedly connected with the outer wall of the vacuum sealed chamber 2 and used for supporting the vacuum sealed chamber 2 and preventing the vacuum sealed chamber 2 from rotating along with the rotary main shaft 13, and preferably, the left end cover 3 of the vacuum sealed chamber 2 and the axial rotation constraint 7 can be integrally formed and processed.
The axial loading structure adopts an axial loading connecting rod 4, and the axial loading connecting rod 4 is fixedly connected with the left end cover 3. In practical use, one end, far away from the vacuum sealed chamber 2, of the axial loading connecting rod 4 is connected with a hydraulic device, such as a hydraulic cylinder, the hydraulic device works to tightly press the axial loading connecting rod 4 to apply a load with a set numerical value to the axial loading connecting rod, then the axial load is applied to the outer ring of the bearing 1 to be tested through the shell of the vacuum sealed chamber 2 and the fixed cone clamp II 17, and further the axial loading of the bearing 1 to be tested is achieved, namely the axial load is applied to the bearing 1 to be tested through the friction force between the inner wall of the vacuum sealed chamber 2 and the fixed cone clamp II 17, the hydraulic device adopts the prior art, and the applied load.
The radial loading structure adopts a radial loading connecting rod 8, and the radial loading connecting rod 8 is fixedly connected with the outer wall right below the vacuum sealed chamber 2. In actual use, one end of the radial loading connecting rod 8, which is far away from the vacuum sealed chamber 2, is connected with a hydraulic device, such as a hydraulic cylinder, the hydraulic device works to compress the radial loading connecting rod 8 to apply a load with a set numerical value to the radial loading connecting rod, then the radial load is applied to the outer ring of the bearing 1 to be tested through the vacuum sealed chamber 2 and the fixed cone clamp II 17, and further the radial loading of the bearing 1 to be tested is realized, namely the radial load is applied to the bearing 1 to be tested through compressing the vacuum sealed side wall and the fixed cone clamp II 17, and the hydraulic device adopts the prior art, and the applied load can be.
The liquid nitrogen input port 6 and the nitrogen output port 15 are both connected with a liquid nitrogen circulating system and used for adjusting the ultra-low temperature wide-temperature-range working condition in the vacuum closed chamber 2 and the temperature in the vacuum closed chamber 2. Specifically, the liquid nitrogen circulating system adopts the prior art, a liquid nitrogen pump of the liquid nitrogen circulating system is communicated with a liquid nitrogen input port 6, a recovery system of the liquid nitrogen circulating system is communicated with a nitrogen output port 15, and the liquid nitrogen circulating system further comprises an auxiliary heating device used for adjusting the temperature of liquid nitrogen; liquid nitrogen can be input and output in the vacuum sealed chamber 2 through the liquid nitrogen circulating system, the liquid nitrogen input port 6 and the nitrogen output port 15, the inside cooling of the vacuum sealed chamber 2 is realized through the liquid nitrogen circulating, the liquid nitrogen is heated through the auxiliary heating device of the liquid nitrogen circulating system to realize the temperature regulation inside the vacuum sealed chamber 2, and further the ultralow-temperature wide-temperature-range working environment of the bearing 1 to be tested is simulated, namely the temperature control range in the vacuum sealed chamber 2 is 20 ℃ to-160 ℃.
A conical table hole matched with one end of the quick-change testing shaft 11 is formed in the left end of the rotary main shaft 13, and one end of the quick-change testing shaft 11 is inserted into the conical table hole of the rotary main shaft 13 and locked through a locking nut. Specifically, a plurality of through holes are uniformly formed in the outer side of the rotary main shaft 13 along the circumferential direction, and locking screws are inserted into the through holes of the rotary main shaft 13 to press and lock the quick-change test shaft 11; when the variable frequency motor is used for simulating different rotating speed working conditions of the all-ceramic rolling bearing, the rotary main shaft 13 is made of a metal material, the quick-change testing shaft 11 is made of a silicon nitride ceramic material, the rotary main shaft 13 and the quick-change testing shaft 11 are different in thermal expansion coefficient, and the rotary main shaft 13 and the quick-change testing shaft 11 are connected in a conical mode, so that the rotary main shaft 13 and the quick-change testing shaft 11 can slide in a micro axial direction under the condition of large load, and damage to the rotary main shaft 13 or a connecting piece between the two shafts, namely locking nuts, caused by different deformation amounts under the condition of large temperature difference is prevented.
The right side of the bearing 1 to be tested is in contact with a shaft shoulder of the quick-change testing shaft 11, and the left side of the bearing 1 to be tested is provided with a fixed cone clamp I18 for preventing the bearing 1 to be tested from axially moving; and a second fixed cone clamp 17 is arranged between the bearing 1 to be tested and the inner wall of the vacuum sealed chamber 2 and is used for preventing the bearing 1 to be tested from moving radially. Specifically, the first fixed cone clamp 18 and the second fixed cone clamp 17 adopt the prior art, and the bearing 1 to be tested is tightly extruded by adjusting the size.
And a liquid nitrogen inner ring channel 5 is arranged inside the other end of the quick-change test shaft 11. Liquid nitrogen and/or nitrogen in the vacuum sealed chamber 2 enter the liquid nitrogen inner ring channel 5 through the other end of the quick-change testing shaft 11, the contact area between the quick-change testing shaft 11 and the liquid nitrogen and/or the nitrogen is increased, the temperature inside the quick-change testing shaft 11 is lowered, the inner ring of the bearing 1 to be tested is further lowered, the temperature outside the quick-change testing shaft 11 and the outer ring of the bearing 1 to be tested are lowered by combining the liquid nitrogen and/or the nitrogen in the vacuum sealed chamber 2, and the working condition that the ultralow-temperature wide temperature range of the bearing 1 to be tested is 20-160 ℃ is further guaranteed.
The quick-change test shaft 11 is made of silicon nitride ceramic material. Specifically, by utilizing the characteristics of small thermal expansion, cold and hot impact resistance and stable material performance under the ultralow temperature working condition of the silicon nitride ceramic material, the full-ceramic rolling bearing to be tested is mounted on the quick-change testing shaft 11 made of the silicon nitride ceramic material, so that the bearing 1 to be tested or the quick-change testing shaft 11 per se is prevented from being damaged by the material characteristics of the quick-change testing shaft 11 under the ultralow temperature working condition and temperature change condition during testing.
The method for detecting the service performance of the full-ceramic rolling bearing under the ultralow temperature wide temperature range working condition by adopting the device for detecting the service performance of the full-ceramic rolling bearing under the ultralow temperature wide temperature range working condition comprises the following steps:
(1) vacuumizing the vacuum sealed chamber 2, wherein specifically, the nitrogen gas output port 15 is respectively connected with a liquid nitrogen circulating system and a vacuumizing device through a two-position three-way valve, and the vacuumizing device adopts the prior art, such as a vacuum pump, and vacuumizes the vacuum sealed chamber 2 to a set vacuum degree;
(2) a liquid nitrogen pump of a liquid nitrogen circulating system is started, liquid nitrogen and/or nitrogen gas is filled into the vacuum sealed chamber 2 through a liquid nitrogen input port 6, namely the liquid nitrogen is input and output in the vacuum sealed chamber 2 to cool the interior of the vacuum sealed chamber 2, then an auxiliary heating device of the liquid nitrogen circulating system is used for heating the liquid nitrogen, the temperature in the vacuum sealed chamber 2 is increased, the temperature in the vacuum sealed chamber 2 is collected in real time through a temperature sensor 10, and when the temperature in the vacuum sealed chamber 2 displayed on a computer reaches a set temperature, the heating of the auxiliary heating device is stopped;
(3) starting a variable frequency motor, and driving the bearing 1 to be tested to operate according to a set rotating speed through a rotary main shaft 13 and a quick-change testing shaft 11 in sequence;
(4) applying axial and/or radial load with set value to the bearing 1 to be tested through the axial loading connecting rod 4 and/or the radial loading connecting rod 8;
(5) the temperature sensor 10 and the vibration sensor 16 collect temperature and vibration signals in real time, the temperature and the vibration signals are displayed and stored by a computer, when the vibration parameters collected by the vibration sensor 16 exceed the set vibration parameter limit, the bearing 1 to be tested cannot be in service continuously, the service time of the bearing 1 to be tested is recorded, and the detection is stopped.
When the bearing to be tested is actually used, different detection method flows can be set according to different detection purposes, for example, when service parameters of the bearing to be tested 1 under normal-temperature and ultralow-temperature working conditions need to be compared, the service parameters of the bearing to be tested 1 under the normal-temperature working condition and the service parameters of the bearing to be tested 1 under the ultralow-temperature working condition are acquired and respectively compared to obtain the service performance of the bearing to be tested 1; for another example, when the influence of the rotating speed on the service parameters needs to be analyzed, different rotating speeds can be adjusted according to the variable frequency motor for detection, so that the service performance of the bearing 1 to be tested is obtained; for another example, when the low-temperature service time of the bearing 1 to be tested needs to be determined, the service time of the bearing 1 to be tested can be obtained through multiple groups of detection; moreover, the axial direction and the radial direction of the bearing 1 to be tested can be loaded independently or in a combined way, so that the working conditions of different load forms of the all-ceramic rolling bearing can be simulated; therefore, the service performance of the all-ceramic rolling bearing under the working conditions of ultralow temperature, wide temperature range, different temperatures, different loads and different rotating speeds can be realized, and the accurate detection of the key test parameters of the all-ceramic rolling bearing is realized.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A device for detecting service performance of a full-ceramic rolling bearing under an ultralow-temperature wide-temperature-range working condition is characterized by comprising a working platform and a vacuum sealed chamber arranged on the working platform;
a quick-change testing shaft and a temperature sensor for collecting the internal temperature of the vacuum sealed chamber are arranged in the vacuum sealed chamber, one end of the quick-change testing shaft is of a cone frustum structure, the quick-change testing shaft penetrates through the side wall of the vacuum sealed chamber and is connected with a rotary main shaft, and the rotary main shaft is connected with a working platform through a supporting seat; the other end of the quick-change testing shaft is of a cylindrical structure, and a bearing to be tested is sleeved at the other end of the quick-change testing shaft;
an axial loading structure for applying axial load to the bearing to be tested, a radial loading structure for applying radial load to the bearing to be tested and a vibration sensor for acquiring vibration signals of the bearing to be tested are arranged outside the vacuum sealed chamber;
and a liquid nitrogen input port and a nitrogen output port are respectively arranged on two sides of the vacuum sealed chamber.
2. The device for detecting the service performance of the all-ceramic rolling bearing under the working condition of the ultra-low temperature wide temperature range according to claim 1, wherein the vacuum sealed chamber comprises a left end cover and a right cylinder which are connected in a sealing manner, a groove is formed in the inner side of the left end cover, the groove is connected with the outer wall of the other end of the quick-change testing shaft through a bearing, and a plurality of negative pressure sealing rings are arranged at the joint of the right side wall of the right cylinder and the quick-change testing shaft.
3. The device for detecting the service performance of the all-ceramic rolling bearing under the working condition of the ultralow temperature and the wide temperature range according to claim 1 or 2, wherein the lower part of the vacuum sealed chamber is connected with the working platform through axial rotation constraint, and the axial rotation constraint is an inverted T-shaped structure.
4. The device for detecting the service performance of the all-ceramic rolling bearing under the working condition of the ultralow temperature and the wide temperature range according to claim 2, wherein the axial loading structure adopts an axial loading connecting rod, and the axial loading connecting rod is fixedly connected with the left end cover.
5. The device for detecting the service performance of the all-ceramic rolling bearing under the working condition of the ultralow temperature and the wide temperature range according to claim 1 or 2, wherein a radial loading connecting rod is adopted by the radial loading structure and is fixedly connected with the outer wall right below the vacuum sealed chamber.
6. The device for detecting the service performance of the all-ceramic rolling bearing under the ultralow-temperature wide-temperature-range working condition according to claim 1, wherein the liquid nitrogen input port and the nitrogen output port are both connected with a liquid nitrogen circulating system and are used for adjusting the ultralow-temperature wide-temperature-range working condition in the vacuum closed chamber and the temperature in the vacuum closed chamber.
7. The device for detecting the service performance of the all-ceramic rolling bearing under the working condition of the ultralow temperature and the wide temperature range according to claim 1, wherein a frustum cone hole matched with one end of the quick-change testing shaft is formed in the left end of the rotary main shaft, and one end of the quick-change testing shaft is inserted into the frustum cone hole of the rotary main shaft and is locked by a locking nut.
8. The device for detecting the service performance of the all-ceramic rolling bearing under the working condition of the ultralow temperature and the wide temperature range according to claim 1, is characterized in that the right side of the bearing to be tested is in contact with a shaft shoulder of a quick-change testing shaft, and a first fixing cone clamp is arranged on the left side of the bearing to be tested and used for preventing the bearing to be tested from axially moving; and a second fixing cone clamp is arranged between the bearing to be tested and the inner wall of the vacuum closed chamber and is used for preventing the bearing to be tested from moving in the radial direction.
9. The device for detecting the service performance of the all-ceramic rolling bearing under the working condition of the ultralow temperature and the wide temperature range according to claim 1, wherein a liquid nitrogen inner ring channel is arranged inside the other end of the quick-change test shaft.
10. The device for detecting the service performance of the all-ceramic rolling bearing under the working condition of the ultralow temperature and the wide temperature range according to claim 1, wherein the quick-change test shaft is made of a silicon nitride ceramic material.
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| CN202010756966.3A CN111855212B (en) | 2020-07-31 | 2020-07-31 | Device for detecting service performance of all-ceramic rolling bearing under ultralow-temperature wide-temperature-range working condition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235397A (en) * | 2021-11-04 | 2022-03-25 | 北方华锦化学工业股份有限公司 | Wide-temperature-range multi-model bearing loading test platform |
| CN114295376A (en) * | 2021-11-16 | 2022-04-08 | 合肥三益江海智能科技有限公司 | Rolling bearing vibration experiment device |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840982A (en) * | 2012-07-02 | 2012-12-26 | 清华大学 | Service life verification tester for ceramic bearing |
| CN106092576A (en) * | 2016-06-20 | 2016-11-09 | 苏州东菱科技有限公司 | Multifunction bearing pilot system |
| KR20170022164A (en) * | 2015-08-19 | 2017-03-02 | 제일베어링공업(주) | Tester for Ultra Low Temperature Bearing |
| CN107024353A (en) * | 2017-05-11 | 2017-08-08 | 浙江省机电设计研究院有限公司 | A kind of sealed bearings combination property simulation test machine |
| CN107764679A (en) * | 2017-11-17 | 2018-03-06 | 慈兴集团有限公司 | A kind of automobile Anti-tilt system bearing high/low temperature alternation low speed is high to carry durable test device |
| CN108120536A (en) * | 2017-12-15 | 2018-06-05 | 兰州真空设备有限责任公司 | A kind of oscillating bearing measurement of friction torque system and method for vacuum high/low temperature condition |
| CN207763955U (en) * | 2018-02-01 | 2018-08-24 | 中国人民解放军海军航空大学 | Aviation high speed roller bearing Work condition analogue device |
| CN109975022A (en) * | 2019-03-26 | 2019-07-05 | 北京宇航推进科技有限公司 | Experimental rig and test method for the high DN value bearing fatigue life of ultralow temperature |
| WO2019147200A2 (en) * | 2017-07-17 | 2019-08-01 | Tusas- Turk Havacilik Ve Uzay Sanayii Anonim Sirketi | A bearing test apparatus |
| CN110793773A (en) * | 2019-11-11 | 2020-02-14 | 清华大学 | Low-temperature large-temperature change joint bearing test platform |
| CN111024375A (en) * | 2019-11-19 | 2020-04-17 | 中国矿业大学 | Test system for simulating mechanical sealing performance under severe working conditions |
-
2020
- 2020-07-31 CN CN202010756966.3A patent/CN111855212B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840982A (en) * | 2012-07-02 | 2012-12-26 | 清华大学 | Service life verification tester for ceramic bearing |
| KR20170022164A (en) * | 2015-08-19 | 2017-03-02 | 제일베어링공업(주) | Tester for Ultra Low Temperature Bearing |
| CN106092576A (en) * | 2016-06-20 | 2016-11-09 | 苏州东菱科技有限公司 | Multifunction bearing pilot system |
| CN107024353A (en) * | 2017-05-11 | 2017-08-08 | 浙江省机电设计研究院有限公司 | A kind of sealed bearings combination property simulation test machine |
| WO2019147200A2 (en) * | 2017-07-17 | 2019-08-01 | Tusas- Turk Havacilik Ve Uzay Sanayii Anonim Sirketi | A bearing test apparatus |
| CN107764679A (en) * | 2017-11-17 | 2018-03-06 | 慈兴集团有限公司 | A kind of automobile Anti-tilt system bearing high/low temperature alternation low speed is high to carry durable test device |
| CN108120536A (en) * | 2017-12-15 | 2018-06-05 | 兰州真空设备有限责任公司 | A kind of oscillating bearing measurement of friction torque system and method for vacuum high/low temperature condition |
| CN207763955U (en) * | 2018-02-01 | 2018-08-24 | 中国人民解放军海军航空大学 | Aviation high speed roller bearing Work condition analogue device |
| CN109975022A (en) * | 2019-03-26 | 2019-07-05 | 北京宇航推进科技有限公司 | Experimental rig and test method for the high DN value bearing fatigue life of ultralow temperature |
| CN110793773A (en) * | 2019-11-11 | 2020-02-14 | 清华大学 | Low-temperature large-temperature change joint bearing test platform |
| CN111024375A (en) * | 2019-11-19 | 2020-04-17 | 中国矿业大学 | Test system for simulating mechanical sealing performance under severe working conditions |
Non-Patent Citations (4)
| Title |
|---|
| BOKSEONG CHOE: "Experimental study on dynamic behavior of ball bearing cage in cryogenic environments, Part II: Effects of cage mass imbalance", 《MECHANICAL SYSTEMS AND SIGNAL PROCESSING》 * |
| WU YUHOU: "Calculation on the radiation noise of ceramic ball bearings based on dynamic model considering nonlinear contact stiffness and damping", 《JOURNAL OF SOUND AND VIBRATION》 * |
| 云峰 等: "组合加载关节轴承试验机", 《工程与试验》 * |
| 古乐 等: "超低温高速混合式陶瓷轴承性能研究", 《哈尔滨工业大学学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235397A (en) * | 2021-11-04 | 2022-03-25 | 北方华锦化学工业股份有限公司 | Wide-temperature-range multi-model bearing loading test platform |
| CN114235397B (en) * | 2021-11-04 | 2023-12-22 | 沈阳建筑大学 | Wide temperature range polytypic bearing loading test platform |
| CN114295376A (en) * | 2021-11-16 | 2022-04-08 | 合肥三益江海智能科技有限公司 | Rolling bearing vibration experiment device |
| CN114295376B (en) * | 2021-11-16 | 2024-01-16 | 合肥三益江海智能科技有限公司 | Rolling bearing vibration experimental device |
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