CN111734734B - Adjusting device of radial thrust sliding bearing - Google Patents

Abstract

The invention discloses an adjusting device of a radial thrust sliding bearing, which can improve the coaxiality of a rotating shaft and a bearing body in the installation process and keep the rotating stability of the rotating shaft in the operation process, and the technical scheme is characterized in that the adjusting device comprises the bearing body, a spherical seat and the rotating shaft, the rotating shaft is installed in the bearing body, the bearing body is in spherical contact connection with the spherical seat, the outer wall of the spherical seat is provided with a horizontal adjusting device, the bearing body is provided with a thrust ring groove, the rotating shaft is provided with a thrust disc positioned in the thrust ring groove, a movable thrust ring and a static thrust ring are also arranged in the thrust ring groove and positioned on two sides of the thrust disc, the movable thrust ring comprises a plurality of thrust shoes which are arranged at intervals, each thrust shoe comprises a shaft part and a tile part which are connected, the bearing body is provided with an installation hole for installing the shaft part, and the bearing body is, the invention is suitable for the technical field of bearing adjustment.

Description

Adjusting device of radial thrust sliding bearing

Technical Field

The invention belongs to the technical field of bearing adjustment, and particularly relates to an adjusting device of a radial thrust sliding bearing.

Background

The radial thrust sliding bearing has the advantages of stable work, no noise, small radial size, impact resistance, large bearing capacity and the like, so the radial thrust sliding bearing is widely applied to rotor machinery, at present, due to market demands, the power of a unit is increased, correspondingly, the weight and the size of the sliding bearing installed on the unit are increased, the existing radial thrust sliding bearing mainly comprises a radial thrust bearing body and a bearing sleeve sleeved on the radial thrust bearing body, and in order to facilitate the self-positioning of the bearing body in the working process, the bearing body is matched with the bearing sleeve in a spherical way; meanwhile, in order to improve the accuracy of the installation, the applicant has previously disclosed the application No. CN201510957703.8 and mainly discloses an adjusting device which can keep the center line of the radial thrust sliding bearing parallel to the axis line of the rotating shaft during the installation process, but the adjusting device still has the problem of uneven wear caused by the reduction of stability during the long-time operation, so that the further improvement is made.

Disclosure of Invention

The invention aims to provide an adjusting device of a radial thrust sliding bearing, which can improve the coaxiality of a rotating shaft and a bearing body in the installation process and keep the rotating stability of the rotating shaft in the operation process.

The purpose of the invention is realized as follows: an adjusting device of a radial thrust sliding bearing comprises a bearing body, a spherical seat and a rotating shaft, wherein the rotating shaft is arranged in the bearing body, the bearing body is in contact connection with the spherical surface of the spherical seat, a horizontal adjusting device is arranged on the outer wall of the spherical seat, the horizontal adjusting device comprises a first support fixed on the spherical seat, a lead screw used for pushing the bearing body and keeping the bearing body horizontal and a driving device used for driving the lead screw to reciprocate are arranged on the first support, the horizontal adjusting device also comprises a controller and a horizontal sensor arranged on the outer wall of the bearing body, the horizontal sensor feeds back a detected signal to the controller, and controls the forward rotation or reverse rotation of the driving device through the controller, the bearing body comprises a base body part and a spherical body part which are connected, shaft holes are jointly arranged on the base body part and the spherical body part, a thrust ring groove is also arranged on the base body part, and a thrust disc, still be equipped with the dynamic thrust ring and the static thrust ring that are located on thrust disc both sides in the thrust annular, be equipped with the oil groove in the spheroid portion, be linked together through being equipped with the oil guide hole between oil groove and the thrust annular, on the static thrust ring is located one side that is close to the oil groove in the thrust annular, its characterized in that: the dynamic thrust ring comprises a plurality of thrust tiles arranged at intervals, each thrust tile comprises a shaft part and a tile part which are connected, a mounting hole for mounting the shaft part is formed in the bearing body, and an axial clearance compensation mechanism for driving the thrust tiles to perform axial clearance compensation is further arranged on the bearing body.

The invention is further configured to: the axial clearance compensation mechanism is including offering on the bearing body and with the coaxial activity hole of axial region, be equipped with the movable sleeve in the activity hole, form the oil pocket between movable sleeve and the axial region, still be equipped with the steady voltage spring that is located the oil pocket between movable sleeve and the axial region, axial clearance compensation mechanism is still including setting up the compensation cylinder on the activity hole outer end, all be equipped with the balancing hole that is in on the same axis on axial region and the movable sleeve, clearance compensation mechanism still includes the balancing pole, the balancing pole is inserted and is established in each balancing hole, balancing hole axial displacement can be followed to the balancing pole, the interior terminal surface of balancing pole and the medial surface of tile piece portion are in the coplanar, it has high pressure oil all to fill in oil pocket and the compensation cylinder.

The invention is further configured to: be equipped with the non return hole that communicates with the radial slope of movable bore on the bearing body, be equipped with non return ball, non return spring and adjusting screw in the non return hole, non return ball is contradicted with the movable sleeve, and non return spring installs between non return ball and adjusting screw, and adjusting screw and non return hole threaded connection still are equipped with the spigot surface on the hole mouth wall in non return hole, and the spigot surface is located one side that is close to the compensation hydro-cylinder on the non return hole.

The invention is further configured to: be equipped with the first sealed annular that is located the axial region on the balancing pole and be located the sealed annular of second in the balancing hole, all be equipped with seal assembly in first sealed annular and the sealed annular of second, seal assembly includes the sealing ring, the sealing washer, the steel ring, the material of sealing ring is rubber, be equipped with the ring channel on the periphery wall of sealing ring, the steel ring is installed in the ring channel, the axial cross-section of steel ring is U type structure, the sealing washer is the graphite material, the sealing washer gomphosis is on the outer terminal surface of U type sealing ring, and the sealing washer is two both sides that are located the ring channel.

The invention is further configured to: be equipped with the porous becket ring on the shaft hole of spheroid portion, the porous becket ring is formed through powder metallurgy's mode sintering by copper-based powder, be equipped with the breach on the porous becket ring, be equipped with radial clearance compensation arrangement between shaft hole and the porous becket ring, radial clearance compensation arrangement includes metal casing, metal casing includes the interior plate, the outer panel and the end cover that is located the metal casing both ends, the interior plate, annular cavity is enclosed into to outer panel and end cover, be equipped with oil absorption expansion rubber in the cavity, metal casing's outer panel and shaft hole interference fit, the inboard at the interior plate is installed to the porous becket ring, be equipped with a plurality of trompils on the end cover of keeping away from thrust annular one side on the metal casing, be connected with the oiling pipe on the trompil, still be equipped with.

The invention is further configured to: still be equipped with sealed dish on the both ends of the bearing body, sealed dish cover is located in the pivot, and sealed dish inside is equipped with a plurality of annular cavity, be equipped with on the sealed dish with the oil filler point of annular cavity intercommunication, be equipped with on the periphery of sealed dish be used for with the connection pad of bearing body end-to-end connection, the sealing ring inboard on the bulb is equipped with the protruding muscle of a plurality of annular, annotates the oil pipe and installs in adjacent protruding muscle of annular, and annotates the oil pipe and radially draw forth along.

The invention is further configured to: the adjusting device still includes detection element, detection element includes first sensor and second sensor, first sensor and second sensor are eddy current displacement sensor, the sense terminal of first sensor is just right with the axial of pivot, first sensor is used for detecting pivot axial float signal and with signal feedback to controller, be equipped with the second support on the terminal surface of sphere seat, the second sensor is installed on the second support and the sense terminal of second sensor is radial just to the pivot, the second support is two, and the second sensor on two second supports is 90 central angles each other and arranges, the second sensor is used for detecting the radial float signal of pivot and with signal feedback to controller, be connected with the oil supply pipeline on the notes oil pipe, be equipped with the on-off valve on the oil supply pipeline, the opening and close of controller control on-off valve.

An adjustment method for an adjustment device of a radial thrust sliding bearing, comprising an axial clearance compensation adjustment and a radial clearance compensation adjustment;

the axial play compensation adjustment comprises the following stages:

when the bearing Q1 is installed, a thrust disc on the bearing is axially attached to a static thrust ring through oil pressure in an oil cavity and the elastic force of a pressure stabilizing spring, so that the coaxiality of a rotating shaft and a bearing body cannot be deviated;

q2, when the installation is completed and the operation is carried out, when the surface of the thrust pad is abraded, the balance rod can be directly contacted with the thrust disc, so that the balance rod is subjected to an acting force moving to one side of the compensation oil cylinder, the balance rod moves to one side of the inner pressure compensation oil cylinder, the volume in the pressure compensation oil cylinder is reduced, the pressure is increased, the movable sleeve is further pushed to move to one side of the thrust disc, and meanwhile, the dynamic thrust pad is driven to move to one side of the static thrust ring through the elastic force of the pressure stabilizing spring, so that the autonomous clearance compensation is realized;

q3, when the first sensor detects that the axial float value is greater than or equal to the preset value, the controller sends out an alarm signal;

the radial clearance compensation adjustment comprises the following stages:

l1, detecting the radial play of the rotating shaft by a second sensor;

l2, when the second sensor detects that the radial play value is larger than or equal to the preset value, the controller controls the on-off valve to be opened for M seconds and then closed, the number of times of a counting module in the controller is increased by 1, and whether the number of times of the opening of the counting module is Z times or not is judged;

l3, if the counting module is not full of Z times and N seconds later, if the second sensor detects that the radial play value is smaller than the preset value, compensating the radial clearance;

l4, if the counting module is not Z times and N seconds later, if the second sensor detects that the radial play value is larger than or equal to the preset value, returning to the step L2;

l5, if the counting module is Z times full, the controller sends out an alarm signal.

By adopting the technical scheme, the axial clearance compensation mechanism has the advantages that the axial clearance compensation mechanism can generate axial thrust to the thrust disc, the axial stability of the rotating shaft during rotation is improved, the improvement of the stability can reduce local abrasion caused by unbalance loading, and after the thrust pads are abraded, the axial clearance compensation mechanism can generate axial clearance compensation for the thrust disc on the rotating shaft through the self-balancing structure of the compensation oil cylinder; through the arrangement of the radial clearance compensation mechanism, the radial clearance compensation can be realized on the rotating shaft, and the overall stability is good; and the play detection can be realized through the first sensor and the second sensor, and the control precision is high.

Drawings

FIG. 1 is a schematic cross-sectional structural view of the present invention;

FIG. 2 is a schematic view of the installation structure of the thrust pad of the present invention;

FIG. 3 is an enlarged view of part A of FIG. 1 according to the present invention;

FIG. 4 is a schematic illustration of the seal assembly of FIG. 3 according to the present invention;

FIG. 5 is an enlarged view of the portion B of FIG. 1 according to the present invention;

the reference numbers in the figures are: 1. a spherical seat; 2. a rotating shaft; 3. a first bracket; 4. a screw rod; 5. a drive device; 6. a base portion; 7. a spherical portion; 8. a thrust ring groove; 9. a thrust disc; 10. a static thrust ring; 11. an oil sump; 12. an oil guide hole; 13. a thrust pad; 14. a shaft portion; 15. a tile part; 16. a movable sleeve; 17. an oil chamber; 18. a pressure stabilizing spring; 19. a compensation oil cylinder; 20. a balancing pole; 21. a non-return ball; 22. a check spring; 23. an adjusting screw; 24. a guide surface; 25. a seal assembly; 26. a seal ring; 27. a seal ring; 28. a steel ring; 29. a metal housing; 30. oil absorbing expandable rubber; 31. opening a hole; 32. an oil filling pipe; 33. a guide hole; 34. sealing the disc; 35. an annular cavity; 36. an oil filler hole; 37. a connecting disc; 38. an annular convex rib; 39. a first sensor; 40. a second sensor; 41. a second bracket; 42. a porous metal ring.

Detailed Description

The invention is further described in the following with specific embodiments in conjunction with the accompanying drawings, see fig. 1-5:

an adjusting device of a radial thrust sliding bearing comprises a bearing body, a spherical seat 1 and a rotating shaft 2, wherein the rotating shaft 2 is arranged in the bearing body, the bearing body is in contact connection with the spherical surface of the spherical seat 1, the outer wall of the spherical seat 1 is provided with a horizontal adjusting device, the horizontal adjusting device comprises a first bracket 3 fixed on the spherical seat 1, the first bracket 3 is provided with a lead screw 4 used for pushing the bearing body and keeping the bearing body horizontal and a driving device 5 used for driving the lead screw 4 to reciprocate, the horizontal adjusting device further comprises a controller and a horizontal sensor arranged on the outer wall of the bearing body, the horizontal sensor feeds back a detected signal to the controller and controls the forward rotation or the reverse rotation of the driving device 5 through the controller, the bearing body comprises a base body part 6 and a spherical body part 7 which are connected, shaft holes are jointly arranged on the base body part 6 and the spherical body part 7, and a thrust ring groove 8 is also arranged, be equipped with the thrust disc 9 that is located thrust annular 8 on the pivot 2, still be equipped with the dynamic thrust ring and the static thrust ring 10 that are located thrust disc 9 both sides in the thrust annular 8, be equipped with oil groove 11 on the spheroid portion 7, be linked together through being equipped with between oil groove 11 and the thrust annular 8 and lead oilhole 12, static thrust ring 10 is located one side that is close to oil groove 11 in the thrust annular 8, dynamic thrust ring includes the thrust tile 13 that a plurality of intervals set up, and thrust tile 13 is equipped with the mounting hole that is used for the installation of axial region 14 including the axial region 14 and the tile portion 15 that are connected on the bearing body, still is equipped with the axial clearance compensation mechanism that is used for driving thrust tile 13 to carry out axial clearance compensation on the.

The spherical seat 1 is also provided with a limiting bolt for limiting the bearing body, and the limiting bolt is used for limiting the circumferential and axial displacement of the bearing body, so that the rotating shaft 2 can freely rotate relative to the bearing body; the base body part 6 is composed of a detachable left part and a detachable right part, so that the rotating shaft 2 can be conveniently installed, the left part and the right part are mainly connected through threads, a positioning pin is arranged between the left part and the right part, the left part and the right part are prevented from loosening, a sealing gasket can be arranged between the left part and the right part, and the sealing performance of a connecting part is improved.

When the device is installed, the horizontal sensor is used for detecting the levelness of the bearing seat, namely detecting the coaxiality between the bearing seat and the spherical seat 1, feeding back according to a signal detected by the horizontal sensor, and controlling the forward rotation and the reverse rotation of the driving device 5 to realize adjustment, so that the bearing seat and the spherical seat 1 are positioned on the same axis, and uneven wear caused by installation errors is avoided; lubricating oil can be injected into the oil groove 11, and the lubricating oil can enter the thrust ring groove 8 through the flow guide, so that the dynamic thrust ring and the static thrust ring 10 are lubricated, and the abrasion is reduced; the axial clearance compensation mechanism can compensate the axial metal clearance of the rotating shaft 2, improves the rotating stability of the rotating shaft 2 and reduces abrasion.

The axial clearance compensation mechanism is including offering on the bearing body and with the coaxial activity hole of axial region 14, be equipped with the movable sleeve 16 in the activity hole, form oil pocket 17 between movable sleeve 16 and the axial region 14, still be equipped with the steady voltage spring 18 that is located the oil pocket 17 between movable sleeve 16 and the axial region 14, axial clearance compensation mechanism is still including setting up the compensation hydro-cylinder 19 on the activity hole outer end, all be equipped with the balancing hole that is in on the same axis on axial region 14 and the movable sleeve 16, clearance compensation mechanism still includes balancing pole 20, balancing pole 20 is inserted and is established in each balancing hole, balancing pole 20 can be followed balancing hole axial displacement, the interior terminal surface of balancing pole 20 and the medial surface of tile piece portion 15 are in the coplanar, all fill in oil pocket 17 and the compensation hydro-cylinder 19 has high pressure oil.

The bearing body is provided with an oil supplementing hole communicated with the oil cavity 17, after the bearing body is installed, high-pressure oil needs to be filled in the oil cavity 17, the oil cavity 17 is not easy to be axially compressed through filling the high-pressure oil, and the possibility of axial movement of the rotating shaft 2 caused by the fact that the oil cavity 17 is axially compressed is reduced; the thrust pad 13 is axially attached to the thrust disc 9 through the combined action of high-pressure oil in the oil cavity 17 and the pressure stabilizing spring 18, so that the stability of the rotating shaft 2 during rotation is ensured; if the surface of the thrust pad 13 is abraded, the balance rod 20 can directly contact the thrust disc 9, so that the balance rod 20 is subjected to an acting force moving to one side of the compensation oil cylinder 19, the balance rod 20 moves to one side of the inner pressure compensation oil cylinder, the volume in the pressure compensation oil cylinder is reduced, the pressure is increased, the movable sleeve 16 is further pushed to move to one side of the thrust disc 9, and meanwhile, the dynamic thrust pad 13 is driven to move to one side of the static thrust ring 10 through the elastic force of the pressure stabilizing spring 18, so that autonomous clearance compensation is realized; wherein, the radial cross section of the balance rod 20 occupies half of the radial cross section of the compensation oil cylinder 19, and the moving distance of the balance rod 20 back to the thrust disc 9 is equal to the moving distance of the thrust pad 13 to one side of the thrust disc 9, thereby compensating the abrasion thickness of the thrust pad 13 and realizing better clearance compensation.

Be equipped with the non return hole that communicates with the radial slope of movable bore on the bearing body, be equipped with non return ball 21, check spring 22 and adjusting screw 23 in the non return hole, non return ball 21 contradicts with movable sleeve 16, and check spring 22 is installed between non return ball 21 and adjusting screw 23, and adjusting screw 23 and non return hole threaded connection still are equipped with spigot surface 24 on the hole mouth wall in non return hole, and spigot surface 24 is located one side that is close to compensation hydro-cylinder 19 on the non return hole.

The initial position of the check ball 21 is located in the inclined gap formed by the guide surface 24 and the outer peripheral wall of the movable sleeve 16, when the movable sleeve 16 moves towards one side of the thrust disc 9 under the action of high-pressure oil, the check ball 21 is subjected to the driving force of moving towards the side away from the guide surface 24, the check spring 22 is easily compressed, the movable sleeve 16 can normally move towards one side of the thrust disc 9, but the check ball 21 is easily returned to the inclined gap under the action of the elastic force of the check spring 22; when the movable sleeve 16 has a tendency of moving away from the thrust disc 9, the check ball 21 is subjected to an acting force moving towards one side of the guide surface 24, and the check ball 21 is clamped at the moment, so that the resistance between the ball and the movable sleeve 16 can be increased, the movable sleeve 16 is difficult to move towards one side away from the thrust disc 9, and a check effect is achieved; in order to improve the non-return effect, the surface of the non-return ball 21 and the guide surface 24 can be rough surfaces, so that the non-return resistance is increased; in addition, the setting of the adjusting screw 23 facilitates the adjustment of the elastic force of the check spring 22 according to actual needs.

Be equipped with the first sealed annular that is located axial region 14 on the balancing pole and be located the sealed annular of second in the balancing hole, all be equipped with seal assembly 25 in first sealed annular and the sealed annular of second, seal assembly 25 includes sealing ring 26, sealing washer 27, steel ring 28, sealing ring 26's material is rubber, be equipped with the ring channel on sealing ring 26's the periphery wall, steel ring 28 is installed in the ring channel, steel ring 28's axial cross-section is U type structure, sealing washer 27 is the graphite material, sealing washer 27 gomphosis is on U type sealing ring 26's outer terminal surface, and sealing washer 27 is two both sides that are located the ring channel.

During design, the outer diameter of the sealing ring 26 is slightly larger than that of the balance rod 20, the outer diameter of the steel ring 28 is slightly smaller than that of the balance rod 20, the steel ring 28 can effectively shape the sealing ring 26, the sealing ring 26 is prevented from being deformed too much and losing efficacy in the axial movement process of the balance rod 20, but the outer diameter of the steel ring 28 is smaller than that of the balance rod 20, so that the sealing ring 26 can generate slight deformation in the axial movement process of the balance rod 20, the main force in the movement process is reduced, the sealing ring 27 is located on the outer side and directly abutted against a balance hole, the sealing ring 27 is made of graphite, and the wear resistance can be improved; through the above structural design, the sealing ring 26 and the sealing ring 27 can both increase the sealing performance between the balance rod 20 and the balance hole, and if a trace leakage occurs between the balance rod and the balance hole, a trace amount of lubricating oil can enter the U-shaped structure of the steel ring 28 to be temporarily stored, so that the leakage is prevented from continuing to the other side.

Be equipped with porous becket 42 on the shaft hole of spheroid portion 7, porous becket 42 is formed through powder metallurgy's mode sintering by copper-based powder, be equipped with the breach on the porous becket 42, be equipped with radial clearance compensation arrangement between shaft hole and the porous becket 42, radial clearance compensation arrangement includes metal casing 29, metal casing 29 includes the interior plate, the outer panel and the end cover that is located metal casing 29 both ends, the interior plate, outer panel and end cover enclose into annular cavity, be equipped with oil absorption expansion rubber 30 in the cavity, metal casing 29's outer panel and shaft hole interference fit, porous becket 42 is installed in the inboard of interior plate, be equipped with a plurality of trompils 31 on the end cover of keeping away from thrust annular 8 one side on the metal casing 29, be connected with oiling pipe 32 on the trompil 31, still be equipped with the guide hole 33 just right with trompil 31 on the oil absorption expansion.

The porous metal ring 42 is easy to absorb and store oil, an oil film is easier to form on the surface, abrasion is reduced, the notch penetrates through the porous metal ring 42 along the axial direction, and the porous metal ring 42 is easy to deform in the radial direction under the condition of external force; the metal shell 29 can be made of stainless steel, and the thickness of the end cover of the metal shell 29 is preferably larger than the thickness of the inner side plate and the outer side plate, so that the oil absorption expansion rubber 30 is easy to expand along the radial direction after absorbing oil, the metal shell 29 is correspondingly deformed through expansion force, and then the metal can generate radial acting force on the porous metal ring 42, so that the porous metal ring 42 contracts along the radial direction, and the effect of compensating the radial gap is achieved; wherein the guide hole 33 allows the oil in the filler pipe 32 to rapidly and uniformly permeate into the oil absorbing expandable rubber 30, so that the expansion thereof can be uniform.

Still be equipped with sealed dish 34 on the both ends of the bearing body, sealed dish 34 cover is located on pivot 2, and sealed dish 34 is inside to be equipped with a plurality of annular cavity 35, be equipped with on the sealed dish 34 with the oil filler point 36 of annular cavity 35 intercommunication, be equipped with on the periphery of sealed dish 34 be used for with the connection pad 37 of bearing body end-to-end connection, the sealing ring 26 inboard on the bulb is equipped with a plurality of annular protruding muscle 38, and oil filler pipe 32 is installed in adjacent annular protruding muscle 38, and oil filler pipe 32 radially draws forth along the bulb.

The sealing disc 34 is mainly made of rubber, an annular cavity 35 is formed in the sealing disc 34, and oil is injected into the annular cavity 35 to achieve an expansion effect, so that the sealing performance between the sealing disc 34 and the rotating shaft 2 is improved; meanwhile, as the sealing disc 34 is filled with oil, the sealing disc 34 can be cooled, and frictional heat is reduced; an oil filling nozzle or a plug is required to be arranged on the oil filling hole 36; a metal disc is embedded in the connecting disc 37 and is used for being fixedly connected with the end face of the bearing body through a screw or a bolt; the annular convex rib 38 is also made of rubber and is integrated with the sealing disc 34 into a whole, the annular convex rib 38 can axially abut against the metal shell 29, and the oil filling pipe 32 is wound in the adjacent annular convex rib 38, so that the oil filling pipe 32 can be effectively separated and arranged, and the oil filling pipe 32 is prevented from being directly contacted with the rotating shaft 2; the ball portion is provided with a radial through hole for facilitating the leading-out of the oil filling pipe 32 to be connected with an oil supply pipeline.

The adjusting device further comprises a detection assembly, the detection assembly comprises a first sensor 39 and a second sensor 40, the first sensor 39 and the second sensor 40 are both eddy current displacement sensors, the detection end of the first sensor 39 is opposite to the axial direction of the rotating shaft 2, the first sensor 39 is used for detecting the axial movement signal of the rotating shaft 2 and feeding back the signal to the controller, a second support 41 is arranged on the end surface of the spherical seat 1, the second sensor 40 is arranged on the second support 41, the detection end of the second sensor 40 is opposite to the rotating shaft 2 in the radial direction, the number of the second support 41 is two, and the second sensors 40 on the two second brackets 41 are arranged at a central angle of 90 degrees, the second sensors 40 are used for detecting the radial movement signal of the rotating shaft 2 and feeding the signal back to the controller, the oil injection pipe 32 is connected with an oil supply pipeline, the oil supply pipeline is provided with an on-off valve, and the controller controls the on-off of the on-off valve.

The first sensor 39 can be an external structure, is installed on an application device of the radial thrust sliding bearing, and only needs to be directly opposite to the axial direction of the rotating shaft 2, when the second sensor 40 detects a play signal and is compared by the controller, and if the radial play value is greater than or equal to a preset value, the controller sends an alarm signal through the alarm module; the second bracket 41 is fixed on the spherical seat 1, when the second sensor 40 detects a play signal and is compared by the controller, if the radial play value is larger than or equal to a preset value, the controller controls the on-off valve to be opened, the flow rate or the opening time is controlled during on, the oil supply amount is controlled, the oil absorption expansion rubber 30 is enabled to absorb oil expansion, the clearance compensation effect is achieved, and the rotation is stable.

The eddy current displacement sensor is an existing sensor, can accurately measure static and dynamic relative displacement changes between a measured body and the end face of a probe, and the second sensor 40 is structurally arranged, so that the play condition of the rotating shaft 2 along the radial direction can be monitored in real time along two mutually perpendicular radial directions, and the detection precision is further improved.

An adjustment method for an adjustment device of a radial thrust sliding bearing, comprising an axial clearance compensation adjustment and a radial clearance compensation adjustment;

the axial play compensation adjustment comprises the following stages:

when the Q1 bearing is installed, the thrust disc 9 on the bearing is axially attached to the static thrust ring 10 through the oil pressure in the pressure stabilizing oil cavity 17 and the elastic force of the pressure stabilizing spring 18, so that the coaxiality of the rotating shaft 2 and the bearing body cannot be deviated;

q2, when the installation is completed and the operation is finished, when the surface of the thrust pad 13 is abraded, the balance rod 20 can directly contact the thrust disc 9, so that the balance rod 20 is subjected to an acting force moving to one side of the compensation oil cylinder 19, the balance rod 20 moves to one side of the inner pressure compensation oil cylinder, the volume in the pressure compensation oil cylinder is reduced, the pressure is increased, the movable sleeve 16 is further pushed to move to one side of the thrust disc 9, and meanwhile, the dynamic thrust pad 13 is driven to move to one side of the static thrust ring 10 through the elastic force of the pressure stabilizing spring 18, and the autonomous clearance compensation is realized;

q3, when the abrasion loss is too large and the axial clearance compensation mechanism fails, the play value of the rotating shaft 2 is increased, namely when the second sensor 40 detects that the axial play value is greater than or equal to a preset value, the controller sends out an alarm signal to inform monitoring personnel, and the monitoring personnel can stop the machine as required;

the radial clearance compensation adjustment comprises the following stages:

l1, the first sensor 39 detects the radial play of the rotating shaft 2;

l2, when the first sensor 39 detects that the radial play value is larger than or equal to the preset value, the controller controls the second on-off valve to be opened for M seconds and then closed, the number of times of a counting module in the controller is increased by 1, and whether the number of times of the opening of the counting module is Z times or not is judged;

l3, if the counting module is not Z times and N seconds later, if the first sensor 39 detects that the radial play value is smaller than the preset value, the radial clearance is compensated;

l4, if the counting module is not Z times and N seconds later, if the first sensor 39 detects that the radial play value is greater than or equal to the preset value, returning to the step L2;

l5, if the counting module is Z times full, the controller sends out an alarm signal.

The opening time of a single on-off valve is short, and the oil absorption expansion rubber 30 cannot be completely expanded, so that the oil absorption expansion rubber can be gradually expanded through multiple times of opening; therefore, whether the oil absorption expansion rubber 30 is completely expanded and failed or not is determined by counting the opening times of the on-off valve, if the oil absorption expansion rubber 30 is completely expanded and failed for Z times, the radial clearance compensation device is about to fail, the controller sends out an alarm signal, and monitoring personnel can judge whether maintenance and replacement are needed or not according to the alarm signal; wherein M may be 3 seconds, N may be 600 seconds, Z may be 6 times; in actual use setting, the preset value of the radial float needs to be smaller than the actually acceptable float value in the operation of the radial thrust sliding bearing, the opening time M of the on-off valve needs to be determined according to the actual flow rate of the oil supply pipeline, the expansion waiting time N needs to be determined according to the actual expansion time of the oil absorption expansion rubber 30, and the times Z can also be obtained according to actual tests.

The thrust ring groove 8 can be also internally provided with a temperature sensor for measuring the temperature of the lubricating oil in the thrust ring groove 8 and feeding back a signal to the controller, and when the temperature measured by the temperature sensor is higher than the preset upper limit temperature value of the controller, the controller sends an alarm signal through the alarm module; the controller can be selected from the existing microcontrollers on the market.

By the adjusting method, the automatic compensation adjustment of the axial clearance and the radial clearance can be realized, and the automatic degree and the safety are high.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (4)

1. An adjusting device of a radial thrust sliding bearing comprises a bearing body, a spherical seat (1) and a rotating shaft (2), wherein the rotating shaft (2) is arranged in the bearing body, the bearing body is in spherical contact connection with the spherical seat (1), a horizontal adjusting device is arranged on the outer wall of the spherical seat (1), the horizontal adjusting device comprises a first bracket (3) fixed on the spherical seat (1), a lead screw (4) used for pushing the bearing body and keeping the bearing body horizontal and a driving device (5) used for driving the lead screw (4) to reciprocate are arranged on the first bracket (3), the horizontal adjusting device also comprises a controller and a horizontal sensor arranged on the outer wall of the bearing body, the horizontal sensor feeds back detected signals to the controller and controls the forward rotation or reverse rotation of the driving device (5) through the controller, the bearing body comprises a base body part (6) and a spherical part (7) which are connected, be equipped with the shaft hole jointly on base part (6) and spheroid portion (7), still be equipped with thrust annular (8) on base part (6), be equipped with thrust dish (9) that are located thrust annular (8) on pivot (2), still be equipped with in thrust annular (8) and be located dynamic thrust ring and static thrust ring (10) on thrust dish (9) both sides, be equipped with oil groove (11) on spheroid portion (7), be linked together through being equipped with between oil groove (11) and thrust annular (8) oil guide hole (12), static thrust ring (10) are located one side that is close to oil groove (11) in thrust annular (8), its characterized in that: the dynamic thrust ring comprises a plurality of thrust tiles (13) arranged at intervals, each thrust tile (13) comprises a shaft part (14) and a tile part (15) which are connected, a bearing body is provided with a mounting hole for mounting the shaft part (14), and the bearing body is also provided with an axial clearance compensation mechanism for driving the thrust tiles (13) to perform axial clearance compensation;

the axial clearance compensation mechanism comprises a movable hole which is formed in a bearing body and is coaxial with a shaft part (14), a movable sleeve (16) is arranged in the movable hole, an oil cavity (17) is formed between the movable sleeve (16) and the shaft part (14), a pressure stabilizing spring (18) which is positioned in the oil cavity (17) is further arranged between the movable sleeve (16) and the shaft part (14), the axial clearance compensation mechanism further comprises a compensation oil cylinder (19) which is arranged at the outer end of the movable hole, balance holes which are positioned on the same axis are formed in the shaft part (14) and the movable sleeve (16), the clearance compensation mechanism further comprises a balance rod (20), the balance rod (20) is inserted into each balance hole, the balance rod (20) can axially move along the balance holes, the inner end surface of the balance rod (20) and the inner side surface of the tile part (15) are positioned on the same plane, and high-pressure oil is filled in the oil cavity (17) and;

the bearing body is provided with a non-return hole which is communicated with the movable hole in a radial inclined mode, a non-return ball (21), a non-return spring (22) and an adjusting screw (23) are arranged in the non-return hole, the non-return ball (21) is abutted against the movable sleeve (16), the non-return spring (22) is installed between the non-return ball (21) and the adjusting screw (23), the adjusting screw (23) is in threaded connection with the non-return hole, the wall of an inner hole opening of the non-return hole is also provided with a guide surface (24), and the guide surface (24) is located on one side, close to the compensation oil cylinder (19;

the balance rod (20) is provided with a first sealing ring groove located in the shaft part (14) and a second sealing ring groove located in the balance hole, sealing assemblies (25) are arranged in the first sealing ring groove and the second sealing ring groove respectively, each sealing assembly (25) comprises a sealing ring (26), a sealing ring (27) and a steel ring (28), the sealing ring (26) is made of rubber, an annular groove is formed in the peripheral wall of the sealing ring (26), the steel ring (28) is installed in the annular groove, the axial section of the steel ring (28) is of a U-shaped structure, the sealing ring (27) is made of graphite, the sealing ring (27) is embedded on the outer end face of the U-shaped sealing ring (26), and the sealing rings (27) are located on two sides of the annular groove;

the axial hole of the sphere part (7) is provided with a porous metal ring (42), the porous metal ring (42) is formed by sintering copper-based powder in a powder metallurgy mode, the porous metal ring (42) is provided with a notch, a radial clearance compensation device is arranged between the axial hole and the porous metal ring (42), the radial clearance compensation device comprises a metal shell (29), the metal shell (29) comprises an inner side plate, an outer side plate and end covers positioned at two ends of the metal shell (29), the inner side plate, the outer side plate and the end covers enclose an annular cavity, oil absorption expansion rubber (30) is arranged in the cavity, the outer side plate of the metal shell (29) is in interference fit with the axial hole, the porous metal ring (42) is arranged at the inner side of the inner side plate, the end cover on one side of the metal shell (29) far away from the thrust ring groove (8) is provided with a plurality of open holes (31), and the open holes, the oil absorption expansion rubber (30) is also provided with a guide hole (33) which is opposite to the open hole (31).

2. An adjustment device for a radial thrust slide bearing according to claim 1, characterized in that: still be equipped with sealed dish (34) on the both ends of the bearing body, pivot (2) are located to sealed dish (34) cover, sealed dish (34) inside is equipped with a plurality of annular cavity (35), be equipped with oil filler point (36) with annular cavity (35) intercommunication on sealed dish (34), be equipped with connection pad (37) that are used for with bearing body end-to-end connection in the periphery of sealed dish (34), sealing ring (26) inboard on the ball portion is equipped with a plurality of protruding muscle of annular (38), install in adjacent protruding muscle of annular (38) oiling pipe (32), and oiling pipe (32) are radially drawn forth along the ball portion.

3. An adjustment device for a radial thrust slide bearing according to claim 2, characterized in that: the adjusting device further comprises a detection assembly, the detection assembly comprises a first sensor (39) and a second sensor (40), the first sensor (39) and the second sensor (40) are eddy current displacement sensors, the detection end of the first sensor (39) is opposite to the axial direction of the rotating shaft (2), the first sensor (39) is used for detecting the axial movement signal of the rotating shaft (2) and feeding back the signal to the controller, a second support (41) is arranged on the end face of the spherical seat (1), the second sensor (40) is arranged on the second support (41), the detection end of the second sensor (40) is opposite to the rotating shaft (2) in the radial direction, the number of the second supports (41) is two, the second sensors (40) on the two second supports (41) are arranged at a 90-degree central angle, the second sensors (40) are used for detecting the radial movement signal of the rotating shaft (2) and feeding back the signal to the controller, an oil supply pipeline is connected to the oil injection pipe (32), an on-off valve is arranged on the oil supply pipeline, and the controller controls the on-off valve to be opened and closed.

4. An adjustment method applied to an adjustment device of a radial thrust sliding bearing according to claim 3, characterized in that: the method comprises the steps of axial clearance compensation adjustment and radial clearance compensation adjustment;

the axial play compensation adjustment comprises the following stages:

q1, when the bearing is installed, a thrust disc (9) on the bearing is axially attached to a static thrust ring (10) through oil pressure in an oil cavity (17) and elastic force of a pressure stabilizing spring (18), so that the coaxiality of the rotating shaft (2) and a bearing body cannot be deviated;

q2, when the installation is completed and the operation is carried out, when the surface of the thrust pad (13) is abraded, the balance rod (20) can be directly contacted with the thrust disc (9), so that the balance rod (20) is subjected to an acting force moving to one side of the compensation oil cylinder (19), the balance rod (20) moves to one side of the inner pressure compensation oil cylinder, the volume in the pressure compensation oil cylinder is reduced, the pressure is increased, the movable sleeve (16) is further pushed to move to one side of the thrust disc (9), and meanwhile, the movable thrust pad (13) is driven to move to one side of the static thrust ring (10) through the elastic force of the pressure stabilizing spring (18), so that the autonomous clearance compensation is realized;

q3, when the first sensor (39) detects that the axial float value is greater than or equal to the preset value, the controller sends out an alarm signal;

the radial clearance compensation adjustment comprises the following stages:

l1, a second sensor (40) detects the radial movement of the rotating shaft (2);

l2, when the second sensor (40) detects that the radial play value is larger than or equal to the preset value, the controller controls the on-off valve to be opened for M seconds and then closed, the number of times of a counting module in the controller is increased by 1, and whether the number of times of the opening of the counting module is Z times or not is judged;

l3, if the counting module is not Z times and N seconds later, if the second sensor (40) detects that the radial play value is smaller than the preset value, compensating the radial clearance;

l4, if the counting module is not Z times and N seconds are passed, if the second sensor (40) detects that the radial play value is greater than or equal to the preset value, returning to the step L2;

l5, if the counting module is Z times full, the controller sends out an alarm signal.

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