CN114061953B - Bearing test device for butterfly separator - Google Patents

Abstract

The invention relates to a bearing test device for a butterfly separator, which comprises a shafting fixing seat, an equivalent main shaft, a test bearing mounting seat, an axial loading assembly and a radial loading assembly, wherein the test bearing mounting seat is used for being fixed with an outer ring of a bearing to be tested and is positioned at one side of the shafting fixing seat, which is far away from a rotary drum connecting end; the axial loading assembly is used for applying an axial load from one end of the equivalent main shaft, which is far away from the rotary drum connecting end, so as to simulate the axial load applied to the lower end of the main shaft; the radial loading assembly is used for applying radial load to the equivalent main shaft so as to simulate the impact load of the main shaft when the butterfly separator discharges slag, the centrifugal load of the main shaft caused by unbalanced mass center when the rotary drum rotates and the gyroscopic moment of the main shaft when the ship body swings; according to the invention, different working conditions of the butterfly separator are truly simulated, so that different acting forces born by the bearing are simulated, and the bearing is tested under the condition of being closer to the actual working conditions, so that the bearing reliability of the butterfly separator is ensured.

Description

Bearing test device for butterfly separator

Technical Field

The invention relates to a bearing test device for a butterfly separator, and belongs to the technical field of bearing test.

Background

The disc separator is mainly used between a marine vessel fuel tank, a lubricating oil tank and a driving mechanism, and aims to separate pollutants from fuel and lubricating oil and prevent the pollutants from entering a combustion chamber and a lubricating system.

The existing butterfly separator mainly comprises a frame and a main shaft which is rotatably arranged in the frame along the vertical direction, wherein the upper end of the main shaft is connected with a rotary drum, the middle part of the main shaft is rotatably assembled with the frame through a supporting bearing, the lower end of the main shaft is rotatably assembled with the frame through a pair of angle contact ball bearings which are arranged side by side up and down and a joint bearing which is positioned outside the two angle contact ball bearings, the lower end of the main shaft is provided with an elastic buffer device, the elastic buffer device comprises a butterfly spring, and the elastic buffer device is used for applying upward axial load to the main shaft. One radial side of the main shaft is connected with a driving mechanism, and the driving mechanism drives the main shaft to rotate so as to drive the rotary drum above to rotate. In the rotating process of the rotary drum, impurities in fuel or lubricating oil in the rotary drum are separated, the impurities are accumulated at the bottom of the rotary drum, and the separated fuel or lubricating oil is discharged out of the rotary drum through a liquid discharge pipeline. When impurities in the rotary drum are accumulated to a certain extent, a slag discharging port at one side of the rotary drum is jacked up, the rotary drum starts to discharge slag outwards, and the slag discharging port is automatically closed after the slag discharging process is finished.

The butterfly separator is applied to a marine ship, and due to the shaking of the ship, the butterfly separator is always affected by rolling and pitching, and accordingly, a main shaft in the butterfly separator is also subjected to transverse and longitudinal gyroscopic moment due to rolling and pitching in the rotating process, and is further transmitted to a bearing arranged on the main shaft. Meanwhile, in the deslagging process of the butterfly separator, sundries in the rotary drum are discharged suddenly, and the bearing of the butterfly separator is also subjected to impact load. Meanwhile, the bearing can also receive centrifugal load due to unbalanced rotation of the mass center in the rotating process of the rotary drum. Under the condition that the bearing is subjected to complex load for a long time, whether the reliability of the bearing influences the normal use and the quality of the butterfly separator or not, so that a bearing test device is needed to test the reliability of the bearing so as to ensure the service performance of the butterfly separator. However, the bearing test device in the prior art cannot simulate the complex load working condition born by the bearing of the butterfly separator, and cannot verify the performance and service life of the bearing for the butterfly separator.

Disclosure of Invention

The invention aims to provide a bearing test device for a butterfly separator, which is used for solving the technical problems that the bearing test device in the prior art cannot simulate the complex load working condition born by the bearing of the butterfly separator and cannot verify the performance and service life of the bearing of the butterfly separator.

The invention adopts the following technical scheme:

the bearing test device for the butterfly separator comprises a shafting fixing seat and an equivalent main shaft which is rotationally assembled on the shafting fixing seat and used for simulating a main shaft of the butterfly separator, wherein the equivalent main shaft extends along the Z direction, and one end of the equivalent main shaft is a simulated rotary drum connecting end corresponding to a rotary drum of the butterfly separator; the equivalent main shaft is connected with a driving mechanism for driving the equivalent main shaft to rotate; the bearing test device further comprises a test bearing mounting seat, an axial loading assembly and a radial loading assembly, wherein the test bearing mounting seat is used for being fixed with the outer ring of the bearing to be tested and is positioned on one side of the shafting fixing seat, which is away from the connecting end of the rotary drum; the axial loading assembly is used for applying an axial load from one end of the equivalent main shaft, which is far away from the rotary drum connecting end, so as to simulate the axial load applied to the lower end of the main shaft; the radial loading assembly is used for applying radial load to the equivalent main shaft so as to simulate the impact load of the main shaft when the butterfly separator discharges slag, the centrifugal load of the main shaft caused by unbalanced mass center when the rotary drum rotates and the gyroscopic moment of the main shaft when the ship body swings; the radial loading assembly comprises an X-direction loading assembly and a Y-direction loading assembly, and the X-direction loading assembly is used for applying X-direction radial load to the equivalent main shaft so as to simulate X-direction gyro moment applied to the main shaft; the Y-direction loading component is used for applying Y-direction radial load to the equivalent main shaft so as to simulate Y-direction gyro moment borne by the main shaft.

The beneficial effects are that: according to the invention, the actual working condition of the butterfly separator is truly simulated, the equivalent main shaft is utilized to simulate the main shaft of the actual butterfly separator, the equivalent main shaft is arranged on the shafting fixing seat, the bearing to be tested is arranged on the equivalent main shaft, and the driving mechanism drives the equivalent main shaft to rotate so as to simulate the main shaft rotation condition when the butterfly separator works. The axial loading assembly applies axial load from one end of the equivalent main shaft to simulate the axial load applied to the lower end of the real main shaft, so as to simulate the axial load applied to the bearing for the butterfly separator. The radial loading assembly applies radial load to the equivalent main shaft so as to simulate rolling and pitching suffered by the butterfly separator, wherein the X-direction loading assembly simulates pitching, the Y-direction loading assembly simulates rolling, the equivalent main shaft correspondingly changes the axial direction of the rotating equivalent main shaft after receiving X-direction load or Y-direction load, the main shaft further receives X-direction or Y-direction gyro moment, and correspondingly, the bearing to be tested arranged on the equivalent main shaft also receives X-direction and Y-direction gyro moment so as to simulate the force suffered by the bearing during rolling and pitching. Meanwhile, the radial load applied by the radial loading assembly to the equivalent main shaft also comprises an impact load and a centrifugal load applied to the equivalent main shaft, wherein the impact load is used for simulating the impact load applied to the main shaft in the deslagging process of the butterfly separator, and the centrifugal load is used for simulating the centrifugal load applied to the main shaft with unbalanced mass center during the rotation of the rotary drum. According to the invention, different working conditions of the butterfly separator are simulated truly, so that different acting forces applied to the bearing in the butterfly separator are simulated, and the bearing is tested under the condition of being closer to the actual working conditions, so that the bearing reliability of the butterfly separator is ensured.

Further, in order to more truly simulate the gyroscopic moment suffered by the bearings of the butterfly separator during rolling and pitching, the X-direction loading assembly comprises a first X-direction loading head and a second X-direction loading head which are staggered in the axial direction of the equivalent main shaft and are staggered at 180 degrees in the circumferential direction of the equivalent main shaft; the Y-direction loading assembly comprises a first Y-direction loading head and a second Y-direction loading head, wherein the first Y-direction loading head and the second Y-direction loading head are staggered in the axial direction of the equivalent main shaft and are staggered at 180 degrees in the circumferential direction of the equivalent main shaft; the first X-direction loading head and the first Y-direction loading head are arranged close to the connecting end of the simulation rotary drum, and at least one of the first X-direction loading head and the first Y-direction loading head is used for applying impact load and centrifugal load to the equivalent main shaft so as to simulate the impact load received by the main shaft when the butterfly separator discharges slag and the centrifugal load received by the unbalanced mass center of the rotary drum. The X-direction and Y-direction radial loading assemblies are respectively provided with two loading heads at intervals along the axial direction of the equivalent main shaft, the X-direction loading heads and the Y-direction loading heads are respectively positioned at two sides of the shafting fixing seat and are respectively positioned at two radial sides of the equivalent main shaft, and compared with a single loading point, the invention can more truly simulate the rolling and pitching working conditions by combining the loading from two sides of the shafting fixing seat.

Further, in order to reduce the space occupied by the loading assembly, the first X-direction loading head and the first Y-direction loading head act on the same axial position of the equivalent spindle, and the second X-direction loading head and the second Y-direction loading head act on the same axial position of the equivalent spindle.

Further, the second X-direction loading head is positioned between the shafting fixing seat and the test bearing mounting seat, and the force application point position of the equivalent main shaft of the second X-direction loading head is positioned at the middle position between the supporting position of the equivalent main shaft of the shafting fixing seat and the mounting position of the bearing to be tested on the equivalent main shaft. The layout arrangement corresponds to the stress and supporting position of the main shaft in the actual butterfly wind machine.

Further, the driving mechanism is in transmission connection with the equivalent main shaft, is arranged between the shafting fixing seat and the first X-direction loading head and is close to the shafting fixing seat. The layout arrangement corresponds to the stress and supporting position of the main shaft in the actual butterfly wind machine.

Further, to ensure radial stability when the axial loading assembly is loaded from one end of the equivalent spindle. The first radial loading bearing is arranged between the first loading bush and the equivalent spindle, the second radial loading bearing is arranged between the second loading bush and the equivalent spindle, the first X-direction loading head and the first Y-direction loading head are propped against the first loading bush to apply radial load to the equivalent spindle through the first radial loading bearing, and the second X-direction loading head and the second Y-direction loading head are propped against the second loading bush to apply radial load to the equivalent spindle through the second radial loading bearing.

Further, in order to improve the internal stability of the radial loading bearing and the circumferential loading bearing mounting structure, the first radial loading bearing and the second radial loading bearing respectively comprise a pair of angle contact bearings, a supporting sleeve is clamped between inner rings of each pair of angle contact bearings, an elastic supporting structure is clamped between outer rings, and the elastic supporting structure comprises a first supporting ring, a second supporting ring and a spring, wherein the first supporting ring and the second supporting ring are sleeved outside the supporting sleeve, and the spring is pressed between the first supporting ring and the second supporting ring.

Further, an axial loading bushing is arranged at the position, corresponding to the axial loading assembly, outside the equivalent main shaft, an axial loading bearing is arranged between the axial loading bushing and the equivalent main shaft, and the axial loading assembly applies axial load to the equivalent main shaft through the axial loading bearing. The axial load is applied to the main shaft through the axial loading bearing, so that the stress condition of the main shaft is close to that of a real main shaft.

Further, in order to realize the jacking fit between the axial loading assembly and the axial loading bearing, one end of the equivalent spindle, which faces the axial loading assembly, is fixed with a spindle end cover, the spindle end cover is in blocking fit with the inner ring of the axial loading bearing, a loading end cover is arranged in the axial loading bushing, and the loading end cover is covered outside the spindle end cover and is jacked on the outer ring of the axial loading bearing under the action of the bearing loading assembly.

Further, in order to simplify the external structure of the equivalent main shaft, the test bearing mounting seat is a test bearing bushing sleeved outside the equivalent main shaft, and the axial loading bushing is fixed with one end, facing the axial loading mechanism, of the test bearing bushing.

Drawings

FIG. 1 is a simplified schematic view of example 1 of a bearing test apparatus for a butterfly separator of the present invention;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a schematic diagram showing the assembly of a first loading bush, a first radial loading bearing and an equivalent main shaft in example 1 of a bearing test apparatus for a butterfly separator according to the present invention;

FIG. 4 is a schematic diagram showing the assembly of a second loading bush, a second radial loading bearing and an equivalent main shaft in example 1 of a bearing test apparatus for a butterfly separator according to the present invention;

FIG. 5 is a schematic diagram showing the assembly of a shafting fixing seat and an equivalent main shaft in example 1 of a bearing test device for a butterfly separator according to the present invention;

FIG. 6 is a diagram showing the position distribution of each stress point on the equivalent main shaft in example 1 of a bearing test apparatus for a butterfly separator according to the present invention;

in the figure: 1. axially loading the bushing; 2. testing a bearing mounting seat; 3. a second loading bushing; 4. a second X-direction loading head; 5. a shafting fixing seat; 6. a first loading bushing; 7. a first X-direction loading head; 8. a first bearing spacer ring; 9. a second bearing spacer ring; 10. testing a bearing spacer ring; 11. an axial loading head; 12. an axial loading bearing; 13. bearing to be tested; 14. a second Y-direction loading head; 15. a load bearing; 16. a first radial loading bearing; 17. a first Y-direction loading head; 18. a large diameter section; 19. a second radial loading bearing; 20. an equivalent main shaft; 21. a belt pulley; 22. a driving mechanism; 23. an inner end cap; 24. an outer end cap; 25. an elastic member; 26. a first angular contact bearing; 27. a second angular contact bearing; 28. a first support ring; 29. a second support ring; 30. bearing spacer bush; 31. an upper stop flange ring; 32. a lower stop flange ring; 34. a third angular contact bearing; 35. a fourth corner contact bearing; 36. a third support ring; 37. and a fourth support ring.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.

It is noted that relational terms such as "first" and "second", and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" or the like does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The features and capabilities of the present invention are described in further detail below in connection with the examples.

The invention relates to a specific embodiment 1 of a bearing test device for a butterfly separator, which comprises the following steps: as shown in fig. 1 to 6, the bearing test device for a butterfly separator in this embodiment includes a shafting fixed seat 5, an equivalent main shaft 20, a test bearing mount 2, and a drive mechanism 22. The equivalent main shaft 20 is used for simulating a main shaft of the butterfly separator, and the equivalent main shaft 20 is rotatably assembled on the shafting fixing seat 2. Here, for convenience of explanation, the XYZ three-dimensional coordinate axis is defined, and the axis of the equivalent main shaft 20 extends in the Z direction, which is the up-down direction, which is the direction that coincides with the extending direction of the main shaft of the actual butterfly separator, that is, the equivalent main shaft 20 is vertically mounted on the shafting fixing seat 2 in the up-down direction, which coincides with the main shaft arrangement direction of the butterfly separator. One end of the equivalent main shaft 20 is an analog rotary drum connecting end corresponding to the rotary drum of the butterfly separator, namely, the upper end of the equivalent main shaft 20 is an analog rotary drum connecting end. The equivalent main shaft 20 is formed according to the reduced set proportion of the main shaft of the butterfly separator, and the maximum rotating speed and the rigidity of the shaft system are improved after the length of the shaft system is shortened. The structure of the equivalent main shaft 20 is identical to that of the main shaft of the butterfly separator.

The equivalent main shaft 20 is a stepped shaft, the equivalent main shaft 20 is provided with a section of large-diameter section 18, and the driving mechanism 22 is connected with the large-diameter section 18 of the equivalent main shaft 20 through belt transmission. What needs to be explained here is: the driving mechanism 22 is in transmission connection with the equivalent main shaft 20 at the upper side of the shafting fixing seat 5, namely, at the side of the shafting fixing seat 5 close to the connection end of the simulation drum, and at the position close to the shafting fixing seat 5. The diameter of the equivalent main shaft 20 is gradually reduced from the large-diameter section 18 to the direction away from the connecting end of the rotary drum, and the diameter of the equivalent main shaft 20 close to the connecting end of the rotary drum is larger than that of the equivalent main shaft 20 away from the connecting end of the rotary drum. In this embodiment, the driving mechanism is a servo motor, and a belt pulley 21 is provided on an output shaft of the servo motor.

The shafting fixing seat 5 plays a role in fixedly supporting the whole equivalent main shaft, and the equivalent main shaft 20 is rotatably installed in the shafting fixing seat 5 through the carrying bearing 15. The test bearing mounting seat 2 is positioned on one side of the shafting fixing seat 5, which is far away from the rotary drum connecting end, and when in test, the bearing 13 to be tested is arranged at the corresponding position of the equivalent main shaft 20 in a penetrating way, the inner ring of the bearing 13 to be tested is fixed with the equivalent main shaft 20, and the test bearing mounting seat 2 is fixed with the outer ring of the bearing 13 to be tested. The bearing 13 to be tested is the bearing for the butterfly separator. The test bearing mounting seat 2 is a test bearing bush sleeved outside the equivalent main shaft 20, and the bearing 13 to be tested is fixed in the test bearing bush through the test bearing spacer 10.

The bearing test device for the butterfly separator comprises an axial loading assembly for applying an axial load to the lower end of the equivalent main shaft 20 and a radial loading assembly for applying a radial load to the equivalent main shaft. The axial loading assembly is used for simulating the axial load applied to the lower end of the main shaft of the butterfly separator, namely the axial load applied to the main shaft by the elastic buffer device at the lower end of the main shaft of the butterfly separator. The radial loading component is used for simulating impact load received by the main shaft when the butterfly separator discharges slag, centrifugal load received by the main shaft due to unbalanced mass center when the rotary drum rotates and gyroscopic moment received by the main shaft when the ship body swings.

The structure of the radial loading assembly and the axial loading assembly is described in detail below.

First, with respect to the radial loading assembly, the radial loading assembly includes an X-direction loading assembly for applying an X-direction radial load to the equivalent spindle to simulate an X-direction gyroscopic moment experienced by the spindle, and a Y-direction loading assembly. The X-direction loading assembly comprises a first X-direction loading head 7 and a second X-direction loading head 4, wherein the first X-direction loading head 7 and the second X-direction loading head 4 are respectively connected with a loading mechanism (not shown in the figure), and the loading mechanism is a telescopic cylinder. The first X-direction loading head 7 and the second X-direction loading head 4 are staggered in the axial direction of the equivalent main shaft 20 and are staggered 180 ° in the circumferential direction of the equivalent main shaft 20, that is, the loading directions of the first X-direction loading head and the second X-direction loading head are opposite. The Y-direction loading component is used for applying Y-direction radial load to the equivalent main shaft so as to simulate Y-direction gyro moment borne by the main shaft. The Y-direction loading assembly comprises a first Y-direction loading head 17 and a second Y-direction loading head 14, and the first Y-direction loading head 17 and the second Y-direction loading head 14 are also respectively connected with a loading mechanism (not shown in the figure), and the loading mechanism is a telescopic cylinder. The first Y-direction loading head 17 and the second Y-direction loading head 14 are staggered in the axial direction of the equivalent spindle 20 and are staggered 180 ° in the circumferential direction of the equivalent spindle, that is, the loading directions of the first and second Y-direction loading heads are opposite.

The first X-direction loading head 7 and the first Y-direction loading head 17 act on the same axial position of the equivalent spindle 20, and the first X-direction loading head 7 and the first Y-direction loading head 17 are arranged close to the connection end of the analog rotary drum. The second X-direction loading head 4 and the second Y-direction loading head 14 act on the same axial position of the equivalent spindle. The second X-direction loading head 4 is located between the shafting fixing seat 5 and the test bearing mounting seat 2, and the force application point of the second X-direction loading head 4 to the equivalent spindle 20 is located at the middle position between the supporting position of the shafting fixing seat 5 to the equivalent spindle 20 and the mounting position of the bearing 13 to be tested on the equivalent spindle 20.

Because the butterfly separator is positioned on the ship body, the ship body can swing transversely and longitudinally on the sea surface, namely, the butterfly separator positioned on the ship body can be subjected to the rolling and pitching of the ship body, and correspondingly, the internal main shaft can also be subjected to X-direction gyroscopic moment and Y-direction gyroscopic moment generated by the pitching and pitching, and then the X-direction gyroscopic moment and the Y-direction gyroscopic moment are transmitted to the bearing for the butterfly separator. The invention applies radial X-direction radial load to the equivalent main shaft by using the X-direction loading component so as to simulate the X-direction gyro moment born by the main shaft of the butterfly separator when the ship body is pitching, and applies Y-direction radial load to the equivalent main shaft by using the Y-direction loading component so as to simulate the Y-direction gyro moment born by the main shaft of the butterfly separator when the ship body is rolling. When in test, the equivalent main shaft can transmit the X-direction gyroscopic moment or Y-direction gyroscopic moment to the bearing to be tested which is arranged on the equivalent main shaft.

In this embodiment, the equivalent spindle 20 is sleeved with a first loading bushing 6 at a position corresponding to the first X-direction loading head 7 and the first Y-direction loading head 17, and is sleeved with a second loading bushing 3 at a position corresponding to the second X-direction loading head and the second Y-direction loading head. A first radial loading bearing 16 is arranged between the first loading bush 6 and the equivalent main shaft 20, a second radial loading bearing 19 is arranged between the second loading bush 3 and the equivalent main shaft 20, a first X-direction loading head 7 and a first Y-direction loading head 17 are propped against the first loading bush 6 to apply radial load to the equivalent main shaft 20 through the first radial loading bearing 16, and a second X-direction loading head and a second Y-direction loading head are propped against the second loading bush 3 to apply radial load to the equivalent main shaft 20 through the second radial loading bearing 19.

The first radial load bearing 16 and the second radial load bearing 19 each comprise a pair of angular contact bearings, the first radial load bearing 16 comprising a first angular contact bearing 26 and a second angular contact bearing 27, and the second radial load bearing 19 comprising a third angular contact bearing 34 and a fourth angular contact bearing 35. The upper end of the equivalent main shaft 20 is provided with an inner end cover 23 and an outer end cover 24, the inner end cover 23 is in stop fit with the inner ring of the first angular contact bearing 26, and the outer end cover 24 is in stop fit with the outer ring of the first angular contact bearing 26. The first and second angular contact bearings have support sleeves sandwiched between the inner rings, and elastic support structures sandwiched between the outer rings, the elastic support structures including a first support ring 28 and a second support ring 29 sleeved outside the support sleeves, and an elastic member 25 pressed between the first support ring and the second support ring, the elastic member 25 being a spring. A bearing spacer 30 is interposed between the inner ring of the second angular contact bearing 27 and the equivalent main shaft 20.

The upper end and the lower end of the second loading bush 3 are respectively fixed with an upper stop flange ring 31 and a lower stop flange ring 32, and the upper stop flange ring and the lower stop flange ring are respectively matched with the outer ring stops of the third corner contact bearing and the fourth corner contact bearing, so that two corner contact bearing clamps are fastened and fixed in the second loading bush 3. An elastic supporting structure is arranged between the inner rings of the third angular contact bearing and the fourth angular contact bearing, and is the same as that between the first angular contact bearing and the second angular contact bearing, so that repetition is avoided, and detailed description is omitted. The inner ring of the fourth angle contact bearing is in stop fit with a second bearing spacer ring 9 fixed outside the equivalent main shaft. The load bearing 15 between the shafting fixing seat 5 and the equivalent main shaft 20 also comprises a pair of angular contact bearings, and an elastic supporting structure is also arranged between the two angular contact bearings, and the elastic supporting structure is the same as that between the first angular contact bearing and the second angular contact bearing, so that repetition is avoided, and detailed description is omitted. The inner ring of the bearing positioned below is in stop fit with the first bearing spacer 8.

With respect to the construction of the axial loading assembly, the axial loading assembly applies an axial load from the end of the equivalent spindle that is remote from the connecting end of the drum. The axial loading assembly comprises an axial loading head 11, the axial loading head 11 being connected to an axial loading telescopic cylinder (not shown in the figures). Of course, in other embodiments, the telescopic rod of the axial loading telescopic cylinder can be directly used as the axial loading head. In this embodiment, an axial loading bush 1 is fixed at one end of the test bearing bush facing the axial loading assembly, an axial loading bearing 12 is installed between the axial loading bush 1 and an equivalent spindle 20, a spindle end cover is fixed at one end of the equivalent spindle 20 facing the axial loading assembly, the spindle end cover is in stop fit with an inner ring of the axial loading bearing, a loading end cover is arranged in the axial loading bush, and is covered outside the spindle end cover and is pressed against an outer ring of the axial loading bearing under the action of the bearing loading assembly, so that an axial load is applied to the equivalent spindle through the axial loading bearing and transmitted to the bearing to be tested, and the axial load applied to the lower end of the spindle of the butterfly separator is simulated.

In the test device, when the test is performed, the first X-direction loading head and the second X-direction loading head simultaneously apply a radial load with a set value to the equivalent main shaft so as to simulate the X-direction gyro moment of the butterfly separator when the ship body is pitching; the first Y-direction loading head and the second Y-direction loading head apply radial load with the same set value as the first X-direction loading head and the second X-direction loading head to the equivalent main shaft at the same time so as to simulate Y-direction gyro moment received by the butterfly separator when the ship body rolls; because the butterfly separator alternately appears in the rolling and pitching of the ship body in actual work, the first X-direction loading head and the second X-direction loading head and the first Y-direction loading head alternately apply the radial load of a set value to the equivalent main shaft in test, and then the alternately appearing rolling and pitching working conditions are simulated.

The first X-direction loading head is also used for applying impact load and centrifugal load to the equivalent main shaft so as to simulate the impact load applied to the main shaft when the butterfly separator discharges slag and the centrifugal load applied when the mass center of the rotary drum is unbalanced. When the butterfly separator works, impact load applied to the main shaft is generated when the slag discharging opening of the rotary drum is opened to discharge slag outwards. The slag discharging port is instantly opened, so that impact on the main shaft is generated, and the impact is ended along with the end of the slag discharging process. The centrifugal load applied to the main shaft is mainly caused by unbalance of the rotary drum, the direction of the centrifugal load always rotates along with the main shaft, and the centrifugal load always exists. In the test, centrifugal load which is applied to the equivalent main shaft from the X direction is selected to simulate, specifically, impact load is applied to the equivalent main shaft by using a first X-direction loading head, namely, the first X-direction loading head of the X-direction loading assembly is used as an impact load loading head which applies impact load to the equivalent main shaft.

In actual operation of the butterfly separator, the rolling and pitching of the ship body always exist alternately, centrifugal load applied to the main shaft of the butterfly separator always exists, and slag discharging process is intermittently performed, so that during test, the first X-direction loading head and the second X-direction loading head and the first Y-direction loading head always apply radial load of set values to the equivalent main shaft alternately, and further the main shaft of the butterfly separator is simulated to always receive X-direction gyroscopic moment and Y-direction gyroscopic moment alternately. On the basis that the equivalent main shaft always receives X-direction or Y-direction gyro moment, centrifugal load with a set value is always superposed on the first X-direction loading head, and impact load with a set value is superposed on the first X-direction loading head in a staged manner. For example, the first and second X-direction loading heads and the first and second Y-direction loading heads alternately apply a radial load F1 to the equivalent main shaft to simulate a gyroscopic moment. On this basis, a radial load F2 is always superimposed on the first X-direction loading head, and an impact load F3 is superimposed on the first X-direction loading head in stages, that is, when the first and second X-direction loading heads apply an X-direction radial load F1 to the equivalent spindle, the radial load applied to the equivalent spindle by the first X-direction loading head is F1+F2, and the radial load applied to the equivalent spindle by the second X-direction loading head is F1. Accordingly, when the first Y-direction loading head and the second Y-direction loading head are used for applying Y-direction radial load to the equivalent main shaft, the first Y-direction loading head and the second Y-direction loading head respectively apply radial load F1 to the equivalent main shaft, at the moment, the first X-direction loading head applies F2 to the equivalent main shaft, and the second X-direction loading head does not apply force to the equivalent main shaft, so that centrifugal load applied to the main shaft when the mass center of the rotary drum is unbalanced is simulated on the basis of rolling and pitching. Further, when an impact load needs to be applied to the equivalent main shaft, a radial load F3 is further superimposed on the first X-direction loading head, the acting time of the radial load F3 is temporary, the radial load F3 is removed after the set time is continuously set, and the radial load F3 is superimposed on the first X-direction loading head again after the set time is removed, so that the impact generated in the deslagging process of the butterfly separator is simulated on the basis of rolling or pitching.

Specific test procedures of the bearing test apparatus for a butterfly separator according to the present invention are shown in table 1 below, and the load applied to the bearing is different in the different test procedures.

TABLE 1

In this embodiment, the total length L of the equivalent spindle is 488mm, the distance L1 from the loading point of the equivalent spindle to the position where the bearing to be tested is mounted is 350mm, the distance L2 from the supporting position of the shafting fixing seat to the position where the bearing to be tested is mounted is 209mm, the distance L3 from the loading point of the equivalent spindle to the position where the bearing to be tested is mounted is 103.5mm, and the distance L4 from the position where the bearing to be tested is mounted to the axial loading position is 108mm. The supporting points and the stress points of the equivalent main shaft are arranged according to the actual supporting and stress points of the main shaft of the butterfly separator, so that various loads of the bearing of the butterfly separator in actual work can be accurately simulated.

The bearing test device for the butterfly separator also comprises an electric control and software system, wherein the electric control and software system can be programmed with the servo motor so as to control the rotating speed and the forward and reverse rotation of the servo motor; meanwhile, the telescopic cylinders of the axial loading assembly and the radial loading assembly are electric cylinders, and the electric control and software system can also control the loading direction, the loading speed and the loading size of the electric cylinders. The bearing test device for the butterfly separator is further provided with a sensor for monitoring the temperature of the test bearing, a counter for recording the vibration times of the test bearing and a torque sensor for monitoring the torque value of the equivalent main shaft, so that the analysis of the test bearing is facilitated.

Another embodiment of the bearing test apparatus for a butterfly separator according to the present invention is different from embodiment 1 in that: impact and centrifugal loads may be applied to the equivalent spindle by the Y-loading assembly. Or respectively applying impact load and centrifugal load to the equivalent main shaft through the X-direction loading assembly and the Y-direction loading assembly.

Another embodiment of the bearing test apparatus for a butterfly separator according to the present invention is different from embodiment 1 in that: the impact load and centrifugal load may be applied not with the first X-direction loading head but with an additional set of loading assemblies in the circumferential direction of the equivalent spindle.

Another embodiment of the bearing test apparatus for a butterfly separator according to the present invention is different from embodiment 1 in that: the first X-direction loading head and the first Y-direction loading head may be arranged in a staggered manner along the axial direction of the equivalent main shaft.

Another embodiment of the bearing test apparatus for a butterfly separator according to the present invention is different from embodiment 1 in that: the loading heads of the X-direction loading assembly and the Y-direction loading assembly can directly prop against the outer side of the test bearing, and the first radial loading bush and the second radial loading bush are not arranged.

Another embodiment of the bearing test apparatus for a butterfly separator according to the present invention is different from embodiment 1 in that: the axial loading bushing and the axial loading bearing may not be provided.

Another embodiment of the bearing test apparatus for a butterfly separator according to the present invention is different from embodiment 1 in that: the connection position of the driving mechanism and the equivalent main shaft can be arranged on the other side of the shafting fixing seat.

The above description is only a preferred embodiment of the present invention, and the patent protection scope of the present invention is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The bearing test device for the butterfly separator is characterized by comprising a shafting fixed seat (5), an equivalent main shaft (20) rotationally assembled on the shafting fixed seat (5) and used for simulating a main shaft of the butterfly separator, a driving mechanism (22) connected with the equivalent main shaft and used for driving the equivalent main shaft to rotate, a test bearing mounting seat (2), an axial loading assembly and a radial loading assembly, wherein the equivalent main shaft (20) extends along the Z direction, and one end of the equivalent main shaft is a simulated rotary drum connecting end corresponding to a rotary drum of the butterfly separator; the test bearing mounting seat (2) is positioned on one side of the shafting fixing seat (5) which is away from the connection end of the rotary drum and is used for being fixed with the outer ring of the bearing (13) to be tested; the axial loading assembly is used for applying an axial load from one end of the equivalent main shaft (20) which is far away from the rotary drum connecting end so as to simulate the axial load applied to the lower end of the main shaft; the radial loading assembly is used for applying radial load to the equivalent main shaft (20) so as to simulate impact load applied to the main shaft when the butterfly separator discharges slag, centrifugal load applied to the main shaft due to unbalanced mass center when the rotary drum rotates and gyroscopic moment applied to the main shaft when the ship body swings; the radial loading assembly comprises an X-direction loading assembly for applying X-direction radial load to the equivalent main shaft (20) to simulate the X-direction gyroscopic moment applied by the main shaft and a Y-direction loading assembly for applying Y-direction radial load to the equivalent main shaft (20) to simulate the Y-direction gyroscopic moment applied by the main shaft, the X-direction loading assembly comprises a first X-direction loading head (7), the Y-direction loading assembly comprises a first Y-direction loading head (17), the first X-direction loading head (7) and the first Y-direction loading head (17) are arranged close to the connecting end of the simulated rotary drum, and at least one of the X-direction loading head and the first Y-direction loading head (17) is used for applying impact load and centrifugal load to the equivalent main shaft (20) to simulate the impact load applied by the main shaft when the butterfly separator discharges slag and the centrifugal load applied by the unbalanced mass center of mass of the rotary drum.

2. The bearing test device for a butterfly separator according to claim 1, wherein the X-direction loading assembly further comprises a second X-direction loading head (4), and the first X-direction loading head (7) and the second X-direction loading head (4) are arranged in a staggered manner in the axial direction of the equivalent main shaft (20) and are arranged in a staggered manner by 180 ° in the circumferential direction of the equivalent main shaft (20); the Y-direction loading assembly further comprises a second Y-direction loading head (14), wherein the first Y-direction loading head (17) and the second Y-direction loading head (14) are staggered in the axial direction of the equivalent main shaft (20) and are staggered at 180 degrees in the circumferential direction of the equivalent main shaft (20).

3. The bearing test apparatus for a butterfly separator according to claim 2, wherein the first X-direction loading head and the first Y-direction loading head (17) act on the same axial position of the equivalent spindle (20), and the second X-direction loading head and the second Y-direction loading head (14) act on the same axial position of the equivalent spindle (20).

4. A bearing test apparatus for a butterfly separator according to claim 2 or 3, characterized in that the second X-direction loading head (4) is located between the shafting fixing seat (5) and the test bearing mounting seat (2), and the point of application of the second X-direction loading head (4) to the equivalent spindle (20) is located at an intermediate position between the support position of the shafting fixing seat (5) to the equivalent spindle (20) and the mounting position of the bearing (13) to be tested on the equivalent spindle (20).

5. The bearing test apparatus for a butterfly separator according to claim 4, wherein the position at which the driving mechanism (22) is in driving connection with the equivalent main shaft (20) is located between the shafting fixing base (5) and the first X-direction loading head (7) and is located close to the shafting fixing base (5).

6. A bearing test device for a butterfly separator according to claim 2 or 3, characterized in that the equivalent main shaft (20) is externally sleeved with a first loading bushing (6) corresponding to the positions of a first X-direction loading head (7) and a first Y-direction loading head (17), a second loading bushing (3) corresponding to the positions of a second X-direction loading head (4) and a second Y-direction loading head (14), a first radial loading bearing (16) is arranged between the first loading bushing (6) and the equivalent main shaft (20), a second radial loading bearing (19) is arranged between the second loading bushing (3) and the equivalent main shaft (20), the first X-direction loading head (7) and the first Y-direction loading head (17) are propped against the first loading bushing (6) to apply radial loads to the equivalent main shaft (20) through the first radial loading bearing (16), and the second X-direction loading head (4) and the second Y-direction loading head (14) are propped against the second loading bushing (3) to apply radial loads to the equivalent main shaft (20) through the second radial loading bearing (19).

7. The bearing test device for a butterfly separator according to claim 6, wherein the first radial loading bearing (16) and the second radial loading bearing (19) respectively comprise a pair of angular contact bearings, a support sleeve is sandwiched between inner rings of each pair of angular contact bearings, an elastic support structure is sandwiched between outer rings, and the elastic support structure comprises a first support ring (28) sleeved outside the support sleeve, a second support ring (29), and a spring pressed between the first support ring (28) and the second support ring (29).

8. A bearing test apparatus for a butterfly separator according to any one of claims 1 to 3, characterized in that an axial loading bush (1) is provided at a position outside the equivalent main shaft (20) corresponding to an axial loading assembly, an axial loading bearing (12) is installed between the axial loading bush (1) and the equivalent main shaft (20), and the axial loading assembly applies an axial load to the equivalent main shaft (20) through the axial loading bearing (12).

9. The bearing test device for the butterfly separator according to claim 8, wherein a main shaft end cover is fixed at one end of the equivalent main shaft (20) facing the axial loading assembly, the main shaft end cover is in stop fit with an inner ring of the axial loading bearing (12), a loading end cover is arranged in the axial loading bushing (1), and the loading end cover is covered outside the main shaft end cover and is propped against an outer ring of the axial loading bearing (12) under the action of the bearing loading assembly.

10. The bearing test device for a butterfly separator according to claim 8, wherein the test bearing mount (2) is a test bearing bush fitted outside the equivalent main shaft (20), and the axial loading bush (1) is fixed to one end of the test bearing bush facing the axial loading mechanism.

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