CN211927270U - Marine bearing swing test device - Google Patents

Abstract

The utility model relates to a marine bearing swing test device. The test system comprises a swing inclination test device, the swing inclination test device comprises a test bed, the marine bearing swing test device comprises a space loading inverted bearing test bed, the space loading inverted bearing test bed comprises a driving motor, a transmission shaft, an unloading mechanism, a test shaft, a flexible loading device and a bearing support group, a lifting mechanism comprises a flexible part, a first telescopic cylinder and a second telescopic cylinder, one end of the flexible part is connected with the driving end of the first telescopic cylinder, the other end of the flexible part is connected with a suspension assembly, and the driving end of the second telescopic cylinder is supported in the middle of the flexible part; the bearing support group comprises a left bearing support and a right bearing support, the right bearing support faces one side of the transmission shaft, bearings are installed in the left bearing support and the right bearing support, the bearings in the left bearing support are assembled, and the bearings in the right bearing support are assembled. The utility model discloses an apply the nimble change of load direction, guaranteed the accuracy of test result.

Description

Marine bearing swing test device

Technical Field

The utility model relates to a boats and ships technical field especially relates to a marine bearing test device that sways.

Background

The sliding bearing can realize high-load high-speed operation, has long service life and high reliability, so the bearing is commonly used in some large-scale equipment, such as a large-scale ship motor sliding bearing, a large-scale steam turbine main shaft bearing, a nuclear main pump bearing and the like, and along with the development of national economy, the requirement on the bearing is more and more extensive. Such bearings have common features: the high-speed sliding bearing has the advantages of large load, high rotating speed and high reliability requirement, and belongs to a high-end sliding bearing. When the bearing is researched and developed, a performance test under all working conditions must be developed, so that a performance test bed under all working conditions must be developed, and the performance test bed under all working conditions must meet the requirements of large load and high rotating speed.

However, the existing marine bearing testing equipment can only apply a load in a single direction, and the bearing can be subjected to acting forces in various directions along with the shaking of the ship body in the actual running process of the ship, and the existing marine bearing testing equipment cannot meet the detection requirement on the load applied to the bearing in multiple directions.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a marine bearing test device that sways to bearing experiment table among the solution prior art is single because of applying the load direction, and the direction of applying the load can not be adjusted in a flexible way's technical problem.

The utility model discloses a marine bearing swing test device's technical scheme is:

a marine bearing swing test device comprises a swing inclination test device, wherein the swing inclination test device comprises a test bed, the marine bearing swing test device also comprises a space loading inverted bearing test bed positioned on the test bed, a driving motor of the space loading inverted bearing test bed, a transmission shaft, an unloading mechanism, a test shaft, a flexible loading device and a bearing support group are arranged on the test bed, one end of the transmission shaft is in transmission connection with the driving motor, the other end of the transmission shaft is in transmission connection with the test bearing, and the unloading mechanism is used for unloading deflection and vibration of the transmission shaft; the test shaft is used for sleeving a sliding bearing; the flexible loading device comprises a suspension assembly and a plurality of lifting mechanisms arranged at intervals along the peripheral side of the suspension assembly, a slotted hole structure used for assembling a sliding bearing and a test shaft is arranged in the suspension assembly, each lifting mechanism comprises a flexible piece, a first telescopic cylinder and a second telescopic cylinder, one end of each flexible piece is connected with the driving end of the corresponding first telescopic cylinder, the other end of each flexible piece is connected with the suspension assembly, and the driving end of the corresponding second telescopic cylinder faces upwards and is supported in the middle of the corresponding flexible piece; bearing support group is including rotating left bearing support and the right bearing support that supports at experimental axle both ends respectively, right side bearing support is towards transmission shaft one side, all install the bearing in left side bearing support and the right bearing support, the assembly of moving about of the bearing in the bearing support of a left side, the bearing fixed assembly in the bearing support of the right side.

As a further improvement of the above technical solution, a bearing in the left bearing support is set as a first bearing, a first nut, a loading sleeve and an elastic member are further installed in the left bearing support, an inner ring of the first bearing is clamped and fixed by a shoulder of the test shaft and the first nut, the loading sleeve is disposed on the left side of an outer ring of the first bearing, and the elastic member is used for applying an acting force to the loading sleeve so that the loading sleeve is elastically pressed and contacted with the outer ring of the first bearing.

As a further improvement to the above technical solution, a first sleeve is arranged between the first nut and the first bearing inner ring, and a first labyrinth structure for enhancing the sealing performance is arranged on the first sleeve.

As a further improvement to the above technical solution, a guide pin is fixed on the loading sleeve, the elastic member is a spring, and the guide pin is inserted into the spring.

As a further improvement to the technical scheme, a pre-tightening sleeve is further installed in the left bearing support, and a positioning hole for inserting the spring is formed in the pre-tightening sleeve.

As a further improvement to the above technical solution, a first end cover, a fixed sleeve and an outer fixed ring are further installed in the left bearing support, the first bearing is assembled inside the fixed sleeve in a clearance manner, and two ends of the fixed sleeve are clamped and fixed between the first end cover and the outer fixed ring.

As a further improvement of the technical scheme, a bearing in the right bearing support is set as a second bearing, a second nut, a second end cover and a third end cover are installed in the right bearing support, an outer ring of the second bearing is clamped and fixed between the second end cover and the third end cover, and an inner ring of the second bearing is clamped and fixed between a shaft shoulder of the test shaft and the second nut.

As a further improvement to the above technical solution, a second sleeve is arranged between the second nut and the second bearing inner ring, and a second labyrinth structure for enhancing the sealing performance is arranged on the second sleeve.

As a further improvement to the above technical solution, a buffer member and a tension sensor are further installed between the flexible member and the suspension assembly or between the flexible member and the first telescopic cylinder; the driving end of the second telescopic cylinder is provided with a first pulley assembly for the flexible part to bypass, and the cylinder wall of the second telescopic cylinder is provided with a second pulley assembly for the flexible part to bypass.

As a further improvement to the technical scheme, the swing and tilt test device comprises a bottom plate, a base with a rotary axis extending along the up-down direction is rotatably assembled on the bottom plate, a first driving mechanism for driving the base to rotate is arranged on the base, the test device further comprises a test bed positioned on the upper side of the base, four corners of the test bed are respectively connected with the base through a servo telescopic cylinder, the upper end of the servo telescopic cylinder is connected with the test bed through a spherical hinge, the lower end of the servo telescopic cylinder is connected with the base through a universal joint, the test device further comprises an auxiliary support for restraining the test bed, the lower end of the auxiliary support is fixedly connected with the base, the upper end of the auxiliary support is connected with the test bed, the test bed comprises a frame and a swing platform rotatably assembled in the frame, and the rotary axis of the swing platform extends along the front-back direction, and a second driving mechanism for driving the swing platform to rotate and a braking mechanism for braking the swing platform are arranged on the frame.

The utility model provides a marine bearing swing test device, compared with the prior art, its beneficial effect lies in:

when the marine bearing swing test device is used, the driving mechanism drives the base to rotate, and the base drives the test bed to realize bow swing; the first hook joint, the servo telescopic cylinder and the ball pair form redundant constraint, the second hook joint of the middle auxiliary support is used for constraining the rest four degrees of freedom, and the test movable platform is driven to realize rolling and pitching through the reciprocating motion of the servo telescopic cylinder. The use scene of the marine bearing in an inclined state is simulated by adjusting the inclination angle of the swing platform. In the test process, the traction force of each flexible part can be adjusted by adjusting the stretching amount of the first stretching cylinder and the second stretching cylinder, and the resultant force formed by the traction force of each flexible part can be adjusted along with the change, so that the flexible change of the direction of the applied load is realized, and the detection of the sliding bearing is facilitated. Additionally, the utility model discloses in through setting up off-load mechanism and transmission shaft for the flexure and the vibration that actuating mechanism caused can weaken, and can not directly transmit for the test axle, have guaranteed the accuracy of test result like this. The utility model discloses in with the assembly that moves about of the bearing in the left bearing support, with the bearing fixed mounting in the right bearing support, make the bearing in the left bearing support follow-up self-adjustment in the testing process like this, guaranteed the stability of operation.

The utility model discloses an in the marine bearing test device that sways use, flexible drive mechanism's both ends are connected fixedly with the test bench respectively, because flexible drive mechanism can be flexibly buckled and can be gliding by oneself for the gantry support, sway at the test bench like this and rock the time spent, flexible drive mechanism can slide along with rocking of test bench, has avoided flexible drive mechanism to the influence of swaing the test. The utility model discloses a marine bearing sway test device can realize rolling, pitching, yawing and slope, and various use scenes of simulation marine bearing that can be more true provide the basis for the design and the manufacturing of marine bearing.

The utility model discloses an auxiliary stay's among marine bearing sway test device telescopic link can play the pre-adjustment effect, can be in order to adjust whole test bench high position, in case accomplish the adjustment, can adopt bolt locking device lock to die fixedly. When the telescopic link adopts hydraulic support, can play the damping effect to whole test bench.

Drawings

Fig. 1 is a first schematic structural diagram of a sway and inclination test device in a sway test device for a marine bearing according to the present invention;

FIG. 2 is a second schematic structural view of a sway and inclination test device of the sway and inclination test device for marine bearings of the present invention;

fig. 3 is a schematic structural diagram of a test bed in a sway and inclination test device in the sway and inclination test device for the marine bearing of the present invention;

fig. 4 is a schematic structural diagram of a servo hydraulic cylinder in a sway and inclination test device in the marine bearing sway test device of the present invention;

FIG. 5 is a schematic structural diagram of a Hooke's hinge in a sway and inclination test device of the marine bearing sway test device of the present invention;

FIG. 6 is a schematic view of the assembly of the base and the bottom plate in the sway tilt testing device of the marine bearing sway testing device of the present invention;

FIG. 7 is a cross-sectional view of the base and bottom plate of FIG. 6;

fig. 8 is a schematic structural view of a bottom plate in a sway and inclination test device in the sway and inclination test device for a marine bearing according to the present invention;

fig. 9 is a schematic structural view of a base in a sway and inclination test device in the sway and inclination test device for a marine bearing according to the present invention;

fig. 10 is a schematic structural view of a driving mechanism in a sway and inclination testing device in a marine bearing sway testing device according to the present invention;

FIG. 11 is a schematic diagram of the motor and reducer of FIG. 10;

FIG. 12 is a schematic view of the construction of the spindle of FIG. 10;

figure 13 is an assembly schematic of the connection sleeve, the flat bearing and the connection ring of figure 10;

fig. 14 is a schematic structural view of the connecting sleeve in fig. 10;

FIG. 15 is a schematic view of the attachment ring of FIG. 10;

fig. 16 is a first schematic structural diagram of a test bed in a sway and inclination test device in the sway testing device for the marine bearing of the present invention;

fig. 17 is a second schematic structural view of a test stand in a sway and inclination test device in the marine bearing sway test device of the present invention;

fig. 18 is a third schematic structural view of a test bed in a sway and inclination test device in the marine bearing sway test device of the present invention;

fig. 19 is a schematic structural view of an auxiliary support in a sway and inclination testing device in the marine bearing sway testing device according to the present invention;

FIG. 20 is a schematic structural view of a gantry support and a flexible traction mechanism in a sway and inclination test device of the marine bearing sway test device of the present invention;

fig. 21 is a schematic structural view of a flexible traction mechanism in a sway and inclination test device in a marine bearing sway test device according to the present invention;

fig. 22 is a schematic perspective view of the overall structure of a space loading inverted bearing test bed in the marine bearing sway testing apparatus of the present invention;

fig. 23 is a schematic top view of the overall structure of a space loading inverted bearing test bed in the marine bearing sway testing apparatus of the present invention;

FIG. 24 is a schematic cross-sectional view taken at A-A in FIG. 23;

FIG. 25 is an enlarged view of a portion of FIG. 24 at C;

FIG. 26 is an enlarged view of a portion of FIG. 24 at B;

fig. 27 is a schematic perspective view of a part of the structure of a space loading inverted bearing test bed in the marine bearing sway testing apparatus of the present invention;

fig. 28 is a schematic structural view of a flexible loading device in a space loading inverted bearing test bed in the marine bearing sway testing device of the present invention;

fig. 29 is a schematic structural view of a lifting mechanism in a space loading inverted bearing test bed in the marine bearing sway testing device of the present invention;

fig. 30 is a schematic view of the overall structure of a suspension assembly in a space loading inverted bearing test bed in the marine bearing sway testing device of the present invention;

fig. 31 is a schematic cross-sectional view of the internal structure of the suspension assembly in the space loading inverted bearing test bed of the marine bearing sway testing apparatus of the present invention;

fig. 32 is a schematic structural view of the marine bearing sway testing apparatus of the present invention;

in the figure: 1. a base plate; 2. a base; 3. an air spring; 4. a marker post; 5. a motor; 6. a worm gear reducer; 61. a jack; 7. a speed reducer fixing seat; 8. a rotating shaft; 81. a small diameter section; 82. a large diameter section; 83. a connecting flange; 84. a connecting bond; 9. a fixing plate; 10. connecting sleeves; 101 a horizontal part; 102. a vertical portion; 11. a planar thrust ball bearing; 12. a connecting ring; 121. a convex edge; 13. mounting a plate; 14. a stepped bore; 15. a fixed block; 16. a test bed; 161. a fixing hole; 17. a servo hydraulic cylinder; 18. a second hook joint; 181. a second lower hinge base; 182. a second connecting rod; 183. a second upper hinge body; 19. cushion blocks; 20. a support plate; 21. a ball cup seat; 22. a fixing hole; 23. an avoidance groove; 24. perforating; 25. a gantry support; 251. a bracket upright post; 252-a through hole; 253-bracket beam; 26. a flexible traction mechanism; 261-a transverse traction mechanism; 262-longitudinal traction mechanism; 263-roller construction; 264-sliding rollers; 265-a limit shield; 266-a length adjustment structure; 267-a rotating assembly structure; 27. a swing platform; 28. a connecting seat; 29. a pin shaft; 30. a motor; 31. a brake; 32. a brake disc; 33. a first bearing set; 34. a second bearing set; 35. a support frame; 36. a telescopic rod; 37. a first lower hinge mount; 38. a first connecting rod; 39. a first upper hinge body; 40. a drive motor; 41. a flexible loading device; 42. a bearing support group; 421. a right bearing support; 422. a left bearing support; 423. a support base; 43. a synchronous belt; 44. an unloading mechanism; 45. suspension assembly; 46. a lifting mechanism; 47. a drive shaft; 48. a test shaft; 49. positioning the guide rail; 50. a first bearing; 51. an outer fixing ring; 52. loading a sleeve; 53. an elastic member; 54. a first sleeve; 55. a first nut; 56. pre-tightening the sleeve; 57. a guide pin; 58. fixing a sleeve; 59. a first end cap; 60. a second end cap; 61. a second bearing; 62. a third end cap; 63. a second sleeve; 64. a first telescoping cylinder; 65. a second telescoping cylinder; 66. a flexible member; 67. a guide plate; 68. a first sheave assembly; 69. a buffer member; 70. a tension sensor; 71. a bottom mount; 72. a second sheave assembly; 73. a slotted hole structure; 74. a housing; 75. a liner; 76. a sliding bearing.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The utility model discloses a marine bearing sways test device's concrete embodiment, including swaying slope test device and space loading inversion formula bearing laboratory bench.

As shown in fig. 1 and 2, the swing and tilt test apparatus includes a base plate 1, a base 2, a first drive mechanism, and a test stand 16. Wherein, base 2 rotates the assembly on bottom plate 1, and the axis of rotation of base 2 extends along upper and lower direction, and first actuating mechanism is used for driving base 2 and rotates for bottom plate 1. Two fixing blocks 15 which are arranged in parallel at intervals are fixedly connected to the base 2, two ends of each fixing block 15 are respectively and fixedly connected with a servo telescopic cylinder which extends upwards, and preferably, the servo telescopic cylinders are servo hydraulic cylinders 17. The upper end of the servo hydraulic cylinder 17 is connected with the test bed 16.

Specifically, the lower end of the servo hydraulic cylinder 17 is fixedly connected with the base through a second hooke joint 18, so that the servo hydraulic cylinder 17 can swing within a certain angle when stretching. Referring to fig. 4 and 5, the second hooke joint 18 includes a second lower hinge base 181, a second upper hinge body 183, and a second connecting rod 182, and the second lower hinge base 181 is fixedly connected to the fixing block. The second lower hinge base 181 includes two parallel coupling lugs having hinge holes. The second connecting link 182 is hinged between the two engaging lugs by a hinge link. The second upper hinge bodies 183 have two, the two second upper hinge bodies 183 are hinged to both sides of the second connecting rod 182, and the rotation axes of the second upper hinge bodies 183 and the second connecting rod 182 are perpendicular to the rotation axis of the second lower hinge base 181. The second upper hinge body 183 is fixedly coupled to the lower end of the servo hydraulic cylinder 17 by a bolt.

Referring to fig. 3, the upper end of the servo hydraulic cylinder 17 is connected with the lower side of the test bed 16 through a spherical hinge, specifically, the upper end of the servo hydraulic cylinder 17 is provided with a stud, and a ball head is connected to the stud through a thread. The ball head seat 21 matched with the ball head is provided with two ear parts, the ear parts are provided with fixing holes 22, and the lower side of the test bed 16 is provided with fixing holes 161 corresponding to the fixing holes.

The servo hydraulic cylinder 17 is provided with a displacement sensor, and when the servo hydraulic cylinder 17 extends, the displacement sensor can detect the extension length of the servo hydraulic cylinder 17, so that the extension length of the servo hydraulic cylinder 17 can be accurately controlled.

As shown in fig. 6, 7 and 8, the bottom plate 1 includes a frame and a panel fixedly connected to an upper side of the frame, a through hole penetrating through upper and lower sides of the panel is formed at a center of the panel, and a mounting plate is fixedly connected to the through hole. Step holes 14 penetrating through the upper side and the lower side of the mounting plate are formed in the mounting plate, a plurality of fixing bolts are mounted on steps of the step holes 14, and the two sides of the step holes 14 of the panel are respectively and fixedly connected with a mark post 4 extending upwards.

Referring to fig. 9, the base 2 includes a frame and an outer plate wrapped outside the frame, a through hole 24 penetrating through the upper and lower sides of the base 2 is formed in the center of the upper outer plate, and the through hole 24 is correspondingly penetrated through the stepped hole 14 of the bottom plate 1. The outer plate is provided with avoidance grooves for the mark post 4 on the bottom plate 1 to penetrate upwards at two sides of the through hole 24.

In this embodiment, the base 2 and the bottom plate 1 are rotatably assembled by a bearing. Specifically, a fixing plate 9 is installed in a through hole of the bottom plate 1, a through hole is formed in the center of the fixing plate 9, and a connecting sleeve 10 is fixedly connected to the lower side of the fixing plate 9 through a bolt. As shown in fig. 14, the connecting sleeve 10 is a T-shaped structure, the T-shaped connecting sleeve 10 includes a horizontal portion 101 and a vertical portion 102, the horizontal portion 101 has a plurality of circumferentially arranged fixing holes penetrating the horizontal portion 101, and bolts for connecting with the fixing plate 9 are inserted into the fixing holes. The central hole of the connecting sleeve 10 is communicated with the through hole of the fixing plate 9 in an equal diameter way. The vertical part 102 of the connecting sleeve 10 is sleeved with a plane bearing, preferably, the plane bearing is a plane thrust ball bearing 11. The upper end surface of the flat thrust ball bearing 11 is fixedly connected with the horizontal part 101 of the connecting sleeve 10 through bolts.

A connecting ring 12 is fixedly connected to the inside of the stepped hole 14 of the bottom plate 1 by bolts, as shown in fig. 13 and 15, the connecting ring 12 is embedded in a large-diameter section of the stepped hole 14, and a center of the connecting ring 12 has a center hole which is through with a small-diameter section of the stepped hole 14 in the same diameter. The vertical portion 102 of the connecting sleeve 10 is fitted into the center hole of the connecting ring 12 and the small diameter section of the stepped hole 14. The outer peripheral wall of the connecting ring 12 has a flange 13 extending upward, and an annular space is formed between the flange 13 and the connecting sleeve 10. The lower end of the plane thrust ball bearing 11 is embedded into the annular space, and the lower end face of the plane thrust ball bearing 11 is fixedly connected with the connecting ring 12 through bolts. The base 2 is relatively fixed on the upper end face of the plane thrust ball bearing 11, and the bottom plate 1 is opposite to the lower end face of the plane thrust ball bearing 11, so that the base 2 is rotatably assembled on the bottom plate 1.

In this embodiment, the first driving mechanism includes a motor 5, a speed reducer, and a rotating shaft 8. As shown in fig. 10, 11 and 12, the motor 5 is in transmission connection with a speed reducer, which is a worm gear speed reducer 6. Worm gear speed reducer 6 passes through speed reducer fixing base 7 fixed connection on base 2, and speed reducer fixing base 7 includes bottom plate 1, riser and connects the reinforcing plate between bottom plate 1 and riser. The bottom plate 1 is provided with a connecting hole fixedly connected with the base 2, and the vertical plate is provided with a fixing hole fixedly connected with the worm gear reducer 6. Worm gear speed reducer 6 passes through the key-type connection with pivot 8, and worm gear speed reducer 6's output has jack 61, has the keyway in the jack 61, has on the pivot 8 with keyway assorted connecting key 84. In this embodiment, the rotating shaft 8 is a variable diameter shaft, and the rotating shaft 8 includes a large diameter section, a small diameter section, and a connecting flange 83 fixedly connected to an end of the large diameter section. The minor diameter section of the rotating shaft 8 is matched with the worm gear reducer 6 in a rotation stopping way, and the key groove is axially arranged on the minor diameter section of the rotating shaft 8. The large diameter section is inserted into the connecting sleeve 10. The lower extreme fixedly connected with fixed plate of bottom plate 1, the middle part of fixed plate have with the protruding assorted locating hole in location of pivot 8 downside, have the fixed orifices that link up with flange 83's connecting hole correspondence on the fixed plate, flange 83 passes through the bolt fastening with the fixed plate, realizes pivot 8 and bottom plate 1 fixed connection.

In this embodiment, the avoiding groove is an arc-shaped avoiding groove, so that the mark post 4 can move in the base 2 when the driving mechanism drives the base 2 to rotate. Two arcs on base 2 keep away the opening mutual disposition of groove 23, keep away the groove edge fixedly connected with scale in groove 23, and when base 2 and bottom plate 1 do not take place relative rotation, the zero degree on sighting rod 4 and the scale is corresponding.

In this embodiment, the base 2 and the bottom plate 1 are both rectangular structures, and air springs 3 are respectively installed at four corners of the rectangular bottom plate 1. The underside of the base plate 1 is provided with a support plate 20 having spacers 19 at positions corresponding to the air springs 3.

Referring to fig. 16, 17, 18, and 19, the test stand includes a frame and a swing platform 27 rotatably fitted in the frame, and a rotation axis of the swing platform 27 extends in the front-rear direction. In this embodiment, the frame is a rectangular frame, the swing platform 27 is a rectangular plate, and the front and rear sides of the frame are respectively provided with the first driving mechanism and the braking mechanism. In this embodiment, the first driving mechanism includes a motor 30 and a speed reducer 31, the speed reducer 31 is specifically a worm gear speed reducer, the first driving mechanism is installed at the front end of the frame, the motor 30 is in transmission connection with the speed reducer 31, a first rotating shaft portion is connected between an output shaft of the speed reducer 31 and the swing platform 27, the first rotating shaft portion is a transmission shaft, and the first rotating shaft portion is used for being connected with the swing platform 27 by a flange towards one side of the swing platform 27. The brake mechanism in this embodiment is mounted at the rear end of the frame and includes a brake disc 32 and a brake 31. In this embodiment, the second rotating shaft portion is also a transmission shaft, one end of the second rotating shaft portion is fixedly connected to the swing platform 27 through a flange, the brake disc 32 is integrally disposed at the other end of the second rotating shaft portion, and after the swing platform 27 swings to set an angle, the brake disc 32 is clamped and fixed by the brake 31, so that the swing angle of the swing platform 27 can be fixed.

In this embodiment, the front end and the rear end of the swing platform 27 are further provided with a first bearing group 33 and a second bearing group 34, the first bearing group 33 includes a bearing housing and a bearing installed in the bearing housing, and the first rotating shaft portion and the second rotating shaft portion are both rotatably assembled in the corresponding bearing groups. Specifically, the first bearing group 33 is configured to support a middle position of the first spindle portion, and the second bearing group 34 is configured to support a middle position of the second spindle portion. In this embodiment, the first and second rotating shaft portions are coaxially disposed, so that the swing platform 27 rotates around the first and second rotating shaft portions. In other embodiments, the first and second shaft portions may be disposed on the same shaft. In this embodiment, end plate structures are further fixed at the front end and the rear end of the swing platform 27, the end plate structures are mounting plates arranged at the front end and the rear end of the swing platform 27, the two end plate structures are all arranged perpendicular to the swing platform 27, the end surface area of the swing platform 27 is increased due to the arrangement of the end plate structures, and therefore flange connection of the first rotating shaft part and the swing platform 27 and flange connection of the second rotating shaft part and the swing platform 27 are facilitated.

In this embodiment, both ends all are provided with the portal structure around the frame, and the portal structure is the link of the door style of calligraphy of installing both ends around the platform frame promptly, and the setting of portal structure mainly used with draw the rope fixed connection who moves the test bench, and the setting of rope mainly suspends the test bench in midair, avoids moving the condition of test bench whereabouts when servo pneumatic cylinder became invalid.

In this embodiment, the left and right sides of the frame are provided with a connecting seat 28, the cross section of the connecting seat 28 is an isosceles trapezoid, and the connecting seat 28 is provided with a fixing hole for inserting the pin shaft 29. When the test bed is not used, the pin shafts 29 are inserted into the fixing holes, and then the pin shafts 29 are fixedly connected with the gantry bracket 25 through screws or bolts, so that the test bed can be stopped at the set positions by the pin shafts 29.

In order to measure the swing angle of the swing platform 27 conveniently, in this embodiment, the brake disk 32 is provided with an arc scale, the frame is provided with an indicating needle for indicating the scale of the arc scale, when the brake disk 32 rotates along with the second rotating shaft portion, the arc scale also rotates, and the swing angle of the swing platform 27 can be measured by reading the value indicated by the indicating needle.

In this embodiment, the swing platform 27 includes a flat plate structure, i.e. a rectangular flat plate, and a reinforcing structure fixed at the bottom of the flat plate structure, i.e. a reinforcing rib welded and fixed at the bottom of the rectangular flat plate.

In order to enhance the stability of the structure, the base is also fixedly connected with an auxiliary support. The auxiliary support comprises an expansion link 36 and a support frame 35 supported at the bottom of the expansion link 36, the bottom of the support frame 35 is fixedly connected with the base through a screw, the expansion link 36 and the support frame 35 are fixedly connected through a flange plate, and the top of the expansion link 36 is fixedly connected with the swing platform 27 through a first hook hinge. The first hooke hinge comprises a first lower hinge seat 37, a first upper hinge body 39 and a first connecting rod 38, the first lower hinge seat 37 is fixedly connected with the telescopic rod 36, the first upper hinge body 39 is fixedly connected with the swing platform 27, the upper end of the first connecting rod 38 is hinged with the first upper hinge body 39, the lower end of the first connecting rod 38 is hinged with the first lower hinge seat 37, and the rotating axes of the first connecting rod 38 and the first lower hinge seat 37 are perpendicular to the rotating axes of the first connecting rod 38 and the first upper hinge body 39. The first hooke's joint enables the swing platform 27 to swing in the side-to-side and front-to-back directions about the top of the auxiliary support. In this embodiment, the extension rod 36 is a jack. The first hook joint constraint ensures that the test bed always swings around the central position. In the middle of whole test platform installation, the telescopic link can be whole move the platform height position in advance, in case accomplish the adjustment, can adopt bolt locking device to pin.

Referring to fig. 20 and 21, a gantry support 25 is fixedly connected to the base, and a flexible traction mechanism 26 is slidably mounted on the gantry support 25. The flexible traction mechanism 26 comprises a traction rope and rotating assembly structures 267 arranged at two ends of the traction rope, the rotating assembly structures 267 are used for being rotatably assembled with the test bed, length adjusting structures 266 are further arranged between the rotating assembly structures 267 and the traction rope, and the length adjusting structures 266 are used for adjusting the overall length of the flexible traction mechanism 26 so as to adjust the tightness of the flexible traction mechanism 26.

The gantry support 25 includes two oppositely disposed support columns 251 and a support beam 253 traversing between the two support columns 251. In this embodiment, the support beam 253 is an i-steel, the two support columns 251 are both triangular frames, each support column 251 is formed by welding rectangular steel, and each support column includes an outer frame in an isosceles triangular pattern and a plurality of inner supports welded in the outer frame. The two flexible traction mechanisms 26 are provided, and the two flexible traction mechanisms 26 can be divided into a transverse traction mechanism 261 and a longitudinal traction mechanism 262 according to the extension direction, wherein the transverse traction mechanism 261 is arranged along the extension direction of the bracket beam 253, and the longitudinal traction mechanism 262 is arranged perpendicular to the bracket beam 253.

In this embodiment, the flexible traction mechanism 26 includes a traction rope, which is specifically a steel wire rope, and the flexible traction mechanism 26 further includes a rotating assembly structure 267 and a length adjustment structure 266 disposed at two ends of the traction rope. The connection between the length adjustment structure 266 and the pulling rope, and between the length adjustment structure 266 and the rotating assembly 267 are via suspension loops. Rotating assembly structure 267 includes the pivot and sets up at the epaxial a plurality of bearings of commentaries on classics, is provided with the mounting hole that supplies rotating assembly structure 267 to pass on the test bench, in addition, in order to avoid the condition that the pivot deviates from in the mounting hole, the outside cover of pivot is equipped with the sleeve pipe, and sheathed tube periphery side is the step form, and the bearing of different diameters corresponds the setting promptly in sheathed tube different diameter department, and is corresponding, and the mounting hole also is the step hole. In this embodiment, a suspension ring is disposed at one end of the rotating shaft, an external thread is disposed on the outer peripheral side of the rotating shaft, the rotating shaft is fixedly connected with the sleeve in a threaded assembly manner, during installation, the bearings are firstly placed in the mounting hole, then the sleeve is inserted into the mounting hole from the side with the larger aperture of the mounting hole, the rotating shaft is screwed into the sleeve from the side with the smaller aperture of the mounting hole, and finally the upper end cover is fixed at the end with the larger aperture of the mounting hole, the mounting manner of the end cover is fixed by screws, and the end cover can stop and limit the ends of the bearings and the sleeve, so that the situation that the rotating assembly structure 267 is separated from the mounting hole.

In this embodiment, the length adjustment structure 266 includes a threaded sleeve and a threaded post threadedly mounted within the threaded sleeve. Be provided with the internal thread in the thread bush, the equal screw thread in both ends of thread bush is equipped with a screw thread post, and the tip that each screw thread post is located the thread bush outside all is provided with the link. When the length needs to be adjusted, the screw sleeve or the screw column can be screwed.

Because the traction rope is slidably assembled on the gantry support 25, in order to reduce the friction between the traction rope and the gantry support 25, in this embodiment, a roller structure 263 is further disposed on the gantry support 25, the roller structure 263 includes a sliding roller and a limiting cover 265 disposed on the outer peripheral side of the sliding roller, the sliding roller is a concave wheel, that is, an annular groove for the traction rope to be transversely inserted is disposed on the outer peripheral surface of the sliding roller. In this embodiment, the limiting cover 265 is U-shaped groove, and a gap for the traction rope to pass through is formed between the limiting cover 265 and the sliding roller. The arrangement of the limiting cover 265 can prevent the traction rope from deviating from the roller structure 263, and the safety and stability of operation are ensured. The longitudinal traction mechanism 262 is correspondingly provided with a roller structure 263, the roller structure 263 is disposed at the middle position of the bracket beam 253, while the transverse traction mechanism 261 is correspondingly provided with four roller structures 263, two roller structures 263 are disposed at the two end positions of the bracket beam 253, and the remaining two roller structures 263 are disposed on the corresponding bracket columns 251 respectively.

Since the two ends of the transverse traction mechanism 261 need to be connected to the test bed by bypassing the support columns 251, in order to facilitate the connection of the transverse traction mechanism 261, the support columns 251 are each provided with a through hole 252, and since the support columns 251 are of a triangular frame structure in this embodiment, the through holes 252 are formed by the gaps (through holes) inside the support columns 251.

In this embodiment, as shown in fig. 22 to 32, the spatial loading inverted bearing test bench includes a driving motor 40, a transmission shaft 47, an unloading mechanism 44, a test shaft 48, a flexible loading device 41, and a bearing support group 42, where one end of the transmission shaft 47 is in transmission connection with the driving motor 40, and the other end of the transmission shaft 47 is in bearing connection with the test shaft 48, and the unloading mechanism 44 is used for unloading the deflection and vibration of the transmission shaft 47; the test shaft 48 is used for sleeving a sliding bearing 76; the flexible loading device 41 comprises a suspension assembly 45 and a plurality of lifting mechanisms 46 arranged at intervals along the outer peripheral side of the suspension assembly 45, a slotted hole structure 73 for assembling a sliding bearing 76 and a test shaft 48 is arranged in the suspension assembly 45, each lifting mechanism 46 comprises a flexible part 66, a first telescopic cylinder 64 and a second telescopic cylinder 65, one end of each flexible part 66 is connected with the driving end of the first telescopic cylinder 64, the other end of each flexible part is connected with the suspension assembly 45, and the driving end of the second telescopic cylinder 65 faces upwards and props against the middle of the flexible part 66; bearing support group 423 includes that the difference supports the left bearing support 422 and the right bearing support 421 at experimental axle 48 both ends rotatably, right bearing support 421 is towards transmission shaft 47 one side, all install the bearing in left bearing support 422 and the right bearing support 421, the assembly of moving about of the bearing in the left bearing support 422, bearing fixed assembly in the right bearing support 421.

Specifically, in this embodiment, the driving motor 40 is a servo motor, a motor base is disposed at the bottom of the driving motor 40, in order to weaken the vibration of the driving motor 40, a vibration isolator is disposed below the motor base in this embodiment, the vibration isolator is specifically a rubber pad, a main shaft of the driving motor 40 is in transmission connection with the transmission shaft 47 in this embodiment, the transmission connection is specifically a synchronous belt 434, that is, a large pulley is disposed on the main shaft of the driving motor 40, a small pulley is disposed at a corresponding end of the transmission shaft 47, a diameter of the large pulley is larger than that of the small pulley, and the synchronous belt 434 is wound around outer peripheries of the large pulley and the small pulley at. When the main shaft of the driving motor 40 rotates, the large belt wheel drives the synchronous belt 43 to rotate, and the synchronous belt 43 drives the small belt wheel to rotate, so that the driving shaft 47 is driven to rotate. In this embodiment, the diameter of the large belt wheel is larger than that of the small belt wheel, and the rotating angular speed of the small belt wheel is faster than that of the large belt wheel.

The transmission shaft 47 is a transmission rod in this embodiment, one end of the transmission rod is in transmission connection with the synchronous belt 43, and the other end of the transmission rod is in transmission connection with the test shaft 48 through a coupler. Since the timing belt 43 applies a lateral force to the transmission shaft 47, in order to avoid a situation where the transmission shaft 47 is bent largely, the unloading mechanism 44 is further installed at the transmission shaft 47 in the present embodiment. The unloading mechanism 44 includes two unloading bearings, two unloading bearings are provided on the unloading base, the unloading bearings are installed in the unloading bearings, the unloading bearings are specifically angular contact ball bearings, as shown in fig. 3, the unloading bearings are provided with two unloading mounting holes for installing the two unloading bearings, two ends of the unloading mounting holes are respectively provided with a front sealing cover and a rear sealing cover, and the two unloading bearings are clamped between the front sealing cover and the rear sealing cover. In this embodiment, a certain distance is provided between the two unloading bearings, and an annular protrusion for separating the two unloading bearings is provided on the outer circumferential side of the transmission shaft 47. In this embodiment, the transmission shaft 47 is inserted into the inner rings of the two unloading bearings, and the tension and vibration of the synchronous belt 43 are weakened by the radial limiting effect of the unloading bearings.

In this embodiment, the test shaft 48 is a rotating rod, and one end of the test shaft 48 is in transmission connection with the transmission shaft 47. In the embodiment, the test shaft 48 and the transmission shaft 47 are coaxially disposed, and in order to maintain the test shaft 48 at the set position, the present embodiment further includes a bearing support set 42, specifically, the bearing support set 42 includes a left bearing support 422 and a right bearing support 421 rotatably supported on two sides of the test shaft 48, respectively, and the right bearing support 421 is disposed on a side close to the transmission shaft 47 in the present embodiment.

In this embodiment, the first bearing 50 is installed in the left bearing support 422, the first bearing 50 is movably assembled in the left bearing support 422, and specifically, in this embodiment, the loading sleeve 52, the elastic member 53, the first nut 55, the first sleeve 54, the guide pin 57, the preload sleeve 56, the first end cap 59, the fixing sleeve 58, and the outer fixing ring 51 are disposed in the left bearing support 422. The number of the first bearings 50 is two, the two first bearings 50 are sleeved on the outer peripheral side of the test shaft 48, the fixing sleeve 58 is arranged on the outer peripheral side of the two first bearings 50, in the embodiment, the first end cover 59 is fixed on the right side of the left bearing support 422 through screws, the outer fixing ring 51 is fixed on the left side of the left bearing support 422 through screws, and the fixing sleeve 58 is clamped between the first end cover 59 and the outer fixing ring 51, so that the situation that the fixing sleeve 58 is axially removed from the left bearing support 422 is avoided. In the present embodiment, a shoulder is provided on the outer peripheral side of the test shaft 48, the first nut 55 is screwed onto the test shaft 48, and the inner rings of the two first bearings 50 are held and fixed between the first nut 55 and the shoulder of the test shaft 48. In the present embodiment, the first sleeve 54 is disposed between the first nut 55 and the first bearing 50, and in order to enhance the sealing performance, in the present embodiment, a first labyrinth structure is disposed on the first sleeve 54, specifically, an inner annular protrusion is disposed on the left side of the first sleeve 54, a step structure (similar to a shaft shoulder) is disposed on the outer peripheral side of the test shaft 48, and the sealing performance is enhanced by the stopping function of the inner annular protrusion and the step structure.

In this embodiment, the loading sleeve 52 is sleeved on the outer peripheral side of the first sleeve 54, the pre-tightening sleeve 56 is provided with an inner stepped hole, and the loading sleeve 52 is located in the inner stepped hole of the pre-tightening sleeve 56. The inner stepped surface of the pre-tightening sleeve 56 is further provided with a plurality of positioning holes, each positioning hole is a blind hole, the positioning holes are distributed at intervals along the circumferential direction, each positioning hole is provided with an elastic part 53, the elastic part 53 is specifically a spring, in the embodiment, the loading sleeve 52 is further provided with a plurality of guide pins 57 which are in one-to-one correspondence with the positioning holes, each guide pin 57 is fixed with the loading sleeve 52 in an interference assembly mode, and each guide pin 57 is inserted into each positioning hole and penetrates into the corresponding spring. In this embodiment, each spring member can push the loading sleeve 52 to the right, and the loading sleeve 52 is in pressing contact with the outer ring of the first bearing 50, thereby realizing the traveling assembly of the outer ring of the first bearing 50. In order to improve the sealing performance, a sealing cover plate is installed at the left end of the inner stepped hole of the preload collar 56 in the present embodiment. The inner stepped hole of the pre-tightening sleeve 56 in the embodiment is used for inserting the end part of the test shaft 48, and the arrangement of the sealing cover plate avoids the condition that the test shaft 48 is exposed outside.

In this embodiment, two second bearings 61 are installed in the right bearing support 421, a second end cap 60 and a third end cap 63 are fixed to two sides of the right bearing support 421 through screws, and outer rings of the two second bearings 61 are clamped between the second end cap 60 and the third end cap 63. In this embodiment, a second sleeve 63 is further installed in the right bearing support 421, the second sleeve 63 is fixed to the second end cap 60 by screws, and inner rings of the two second bearings 61 are clamped and fixed between the second sleeve 63 and a shoulder of the test shaft 48. In order to improve the sealing performance, in the present embodiment, a second labyrinth structure is provided on the second sleeve 63, an outer annular flange folded outward is provided on the right side of the second sleeve 63, and an annular groove into which the outer annular flange is inserted is provided on the second end cap 60.

In this embodiment, two ends of the test shaft 48 are respectively inserted into the inner rings of the first bearing 50 and the second bearing 61, wherein the right end of the test shaft 48 penetrates out of the two second bearings 61 and is in transmission connection with the transmission shaft 47. In this embodiment, the outer peripheral side of the test shaft 48 is to be sleeved with the sliding bearing 76 to be fixedly detected, in order to enable the left bearing support 422 and the right bearing support 421 to have better installation accuracy, a support base 423 is further installed at the bottom of the bearing support in this embodiment, a positioning guide rail 49 is installed on the support base 423, the positioning guide rail 49 is in a rectangular shape, and positioning grooves matched with the shape of the positioning guide rail 49 are formed in the bottoms of the left bearing support 422 and the right bearing support 421. In this embodiment, the positioning guide 49 is embedded in the support base 423, the support base 423 is provided with a positioning long groove for the positioning guide 49 to be inserted transversely, and the positioning guide 49 in this embodiment is fixed on the support base 423 by screws.

The flexible loading device 41 in this embodiment includes a suspension assembly 45 and a plurality of lifting mechanisms 46 arranged at intervals along the outer peripheral side of the suspension assembly 45; there are four lifting mechanisms 46, four lifting mechanisms 46 are respectively arranged at four positions of the suspension assembly 45, and the suspension assembly 45 is located at the center of the four lifting mechanisms 46.

Each lifting mechanism 46 in this embodiment includes a first telescopic cylinder 64 and a second telescopic cylinder 65 that are arranged in parallel, the first telescopic cylinder 64 and the second telescopic cylinder 65 are both arranged to extend along a vertical direction, and driving ends are both located at the top, in this embodiment, the first telescopic cylinder 64 and the second telescopic cylinder 65 are both hydraulic telescopic cylinders, and in other embodiments, the first telescopic cylinder 64 and the second telescopic cylinder 65 may also be electric push rods, air cylinders, and the like. In this embodiment, the first telescopic cylinder 64 has a smaller dimension than the second telescopic cylinder 65, and the second telescopic cylinder 65 is located between the suspension assembly and the first telescopic cylinder 64. The flexible member 66 is a steel wire rope in this embodiment, and the flexible member 66 may also be a hemp rope, a chain, a high-strength carbon fiber rope, etc. in other embodiments. One end of the flexible part 66 is connected and fixed with the driving end of the first telescopic cylinder 64, the other end is used for connecting with the suspension assembly, the second telescopic cylinder 65 is supported at the middle position of the flexible part 66 in the embodiment, and the flexible part 66 integrally presents an arch shape with the middle protruding upwards and the two ends extending downwards due to the larger size specification of the second telescopic cylinder 65.

Since the flexible element 66 is to pull the suspension assembly to move, in order to avoid the situation of rigid pulling between the suspension assembly and the flexible element 66, a buffer 69 is installed between the flexible element 66 and the suspension assembly in this embodiment, and the buffer 69 is a tension spring in this embodiment. In other embodiments the bumper 69 may be mounted at a location between the flexible member 66 and the first telescoping cylinder 64.

In order to facilitate observation of the acting force applied to each flexible element 66, in this embodiment, a tension sensor 70 is further installed between the buffer element 69 and the suspension assembly, and the tension sensor 70 can monitor the acting force between the flexible element 66 and the suspension assembly in real time, so that a worker can obtain corresponding tension data in time. In other embodiments, the tension sensor 70 may be mounted at other locations between the flexible member 66 and the first telescoping cylinder 64.

Since the flexible member 66 is to go around the top (driving end) of the second telescopic cylinder 65, in order to avoid the situation that the flexible member 66 is easily worn due to large friction, the first pulley assembly 68 is installed on the top of the second telescopic cylinder 65 in the present embodiment. In order to avoid the situation that the flexible member 66 is easily separated from the first pulley assembly 68, the first pulley assembly 68 in this embodiment includes three pulleys, the three pulleys are arranged in a straight line, and the flexible member 66 is in a wave shape and sequentially passes around the corresponding pulleys.

In order to avoid the situation that the flexible member 66 contacts the second telescopic cylinder 65, a second pulley assembly 72 is further mounted on the cylinder wall of the second telescopic cylinder 65 in the embodiment. The second pulley assembly 72 in this embodiment comprises only one pulley that is braced between the second telescopic cylinder 65 and the flexible member 66, thereby avoiding contact of the flexible member 66 with the second telescopic cylinder 65. It should be noted that, in order to further realize the limiting effect on the flexible member 66, each pulley in the present embodiment is a concave wheel, that is, the outer peripheral surface of each pulley is provided with an annular groove for the flexible member 66 to be transversely inserted.

Since the first pulley assembly 68 is to move up and down along with the extension and contraction of the second telescopic cylinder 65, in order to enhance the guiding effect, a guiding plate 67 is further installed on the cylinder wall of the second telescopic cylinder 65 in the embodiment, and the guiding plate 67 is also extended along the up-down direction. The deflector 67 has two in this embodiment, and two deflector 67 symmetries set up the both sides at second telescoping cylinder 65, all is provided with a guide way in each deflector 67, and the corresponding both sides of first loose pulley assembly 68 then all are provided with the slider arch of inserting corresponding guide way, and the slider arch can be slided in the guide way direction, has strengthened the direction effect through the protruding stop motion with the guide way of slider.

The suspension assembly in this embodiment comprises an inner liner 75 and an outer shell 74, wherein the inner liner 75 is mounted inside the outer shell 74. Because slide bearing 76 is installed in the suspension assembly, in order to facilitate installation of slide bearing 76, inner liner 75 and outer shell 74 are both separately and detachably disposed in this embodiment. Specifically, as shown in fig. 9 and 10, the suspension assembly in this embodiment is in a spherical shape, the shell 74 is a spherical shell 74, and the lining 75 is also in a spherical structure. In this embodiment, the outer shell 74 includes upper and lower portions each having a hemispherical shape, and the inner liner 75 also includes upper and lower portions each having a hemispherical shape. The two parts of the outer shell 7435 are fixed by bolts, and the two parts of the inner liner 75 are also fixed by bolts. In this embodiment, the inner liner 75 can rotate in the outer shell 74, in order to limit the rotation direction, in this embodiment, a strip-shaped protrusion is disposed on the outer circumferential surface of the inner liner 75, and a guide groove for the strip-shaped protrusion to be inserted transversely is correspondingly disposed on the inner wall of the outer shell 74.

In this embodiment, a slot structure 73 is provided in the inner liner 75 for mounting the sliding bearing 76 and the test shaft 48. The slot structure 73 in this embodiment comprises a ring-shaped groove provided on the inner wall of the liner 75 and a circular through-hole penetrating both the liner 75 and the outer shell 74. When slide bearing 76 is installed, slide bearing 76 is inserted laterally into the annular groove of one half of liner 75, and the other half of liner 75 is snapped in. The test shaft 48 is correspondingly snapped into the circular through hole.

In this embodiment, each suspension assembly and each tension sensor 70 are connected by a spherical hinge, the spherical hinge includes a spherical shell and a spherical ball, the spherical shell in this embodiment is cylindrical, the spherical shell is fixedly connected with the tension sensor 70, and the spherical ball is fixedly connected with the outer shell 74 of the suspension assembly.

In order to avoid the situation that the flexible element 66 needs to pull the suspension assembly during non-detection, a support table is arranged below the suspension assembly in the embodiment, and a limit groove matched with the bottom profile of the suspension assembly is arranged on the top surface of the support table. Because the suspension assembly is spherical in this embodiment, correspondingly, the limiting groove is also a curved groove in this embodiment.

In this embodiment, an elevating frame is further installed at the bottom of the supporting platform, the elevating frame is installed on the supporting base 423 through screws, and the positioning guide rail 49 penetrates through the elevating frame. In this embodiment, a cushion block is further installed on the positioning guide rail 49, the cushion block is in a U-shaped groove shape, the cushion block covers the positioning guide rail 49, a positioning pin is further provided on the cushion block, the cushion block is fixed to the position of the cushion block through the abutting contact between the positioning pin and the positioning guide rail 49, and the cushion block is located in the bed-up frame in this embodiment. In this embodiment, a bottom seat frame 71 is also installed at the bottom of each lifting mechanism 46, and both the first telescopic cylinder 64 and the second telescopic cylinder 65 are installed on the same bottom seat frame 71, and the bottom seat frame 71 in this embodiment functions as a base. In this embodiment, vibration isolators are mounted on the bottom of the support base 423 and the bottom of each bottom mount 71.

The utility model discloses a marine bearing sways test device's theory of operation does: when detection is needed, firstly, the sliding bearing 76 is sleeved and fixed on the test shaft 48, then the sliding bearing 76 and the test shaft 48 are installed in the slotted hole structure 73 of the suspension assembly, then the adjustment of the tensile force applied by the corresponding flexible piece 66 can be realized by adjusting the stretching amount of the first telescopic cylinder 64 and the second telescopic cylinder 65 of each lifting mechanism 46, so that the adjustment and setting of the loading force of the sliding bearing 76 are realized, finally, the driving motor 40 is started, the driving motor 40 can drive the test shaft 48 to rotate, and the operation condition of the sliding bearing 76 can be observed. It should be noted that, because under actual conditions, the direction of gravity that the bearing received remains unchanged throughout, for make the simulation test in-process laminate in actual conditions more, need guarantee to test the effort effect that the bearing exerted all the time along vertical direction. In this embodiment, because the suspension assembly 40 applies a dynamic loading action through the four flexible members 47, when the suspension assembly 40 performs swing detection, the four flexible members 47 are dynamically adjusted, and because the gravity direction of the suspension assembly is kept unchanged, the dynamic loading resultant force directions of the four flexible members 47 are always vertical and upward, so that the effect of controlling the vector direction of the loading resultant force is achieved, and the detection of the performances of the bearing, such as fatigue, service life and the like, in a dynamic swing test environment is realized.

The driving mechanism drives the base to rotate, and the base drives the test bed to realize bow shaking; the first hook joint, the servo telescopic cylinder and the ball pair form redundant constraint, the second hook joint of the middle auxiliary support is used for constraining the rest four degrees of freedom, and the test movable platform is driven to realize rolling and pitching through the reciprocating motion of the servo telescopic cylinder. The use scene of the marine equipment in the inclined state is simulated by adjusting the inclination angle of the swing platform. In the process, the telescopic rod of the middle auxiliary support can adjust the height of the test bed, and once the adjustment is completed, the bolt locking device can be adopted to lock and fix the test bed.

The utility model provides a marine bearing swing test device compares with prior art, has following advantage: when the marine bearing swing test device is used, the driving mechanism drives the base to rotate, and the base drives the test bed to realize bow swing; the first hook joint, the servo telescopic cylinder and the ball pair form redundant constraint, the second hook joint of the middle auxiliary support is used for constraining the rest four degrees of freedom, and the test movable platform is driven to realize rolling and pitching through the reciprocating motion of the servo telescopic cylinder. The use scene of the marine bearing in an inclined state is simulated by adjusting the inclination angle of the swing platform. In the test process, the traction force of each flexible part can be adjusted by adjusting the stretching amount of the first stretching cylinder and the second stretching cylinder, and the resultant force formed by the traction force of each flexible part can be adjusted along with the change, so that the flexible change of the direction of the applied load is realized, and the detection of the sliding bearing is facilitated. Additionally, the utility model discloses in through setting up off-load mechanism and transmission shaft for the flexure and the vibration that actuating mechanism caused can weaken, and can not directly transmit for the test axle, have guaranteed the accuracy of test result like this. The utility model discloses in with the assembly of moving about of the bearing in the left bearing support, with the bearing fixed mounting in the right bearing support, make the bearing in the left bearing support adjust by oneself in the testing process follow-up like this, guaranteed the stability of operation, can keep the direction of the loading force perpendicular directional ground all the time, reduced experimental error.

The utility model discloses an in the marine bearing test device that sways use, flexible drive mechanism's both ends are connected fixedly with the test bench respectively, because flexible drive mechanism can be flexibly buckled and can be gliding by oneself for the gantry support, sway at the test bench like this and rock the time spent, flexible drive mechanism can slide along with rocking of test bench, has avoided flexible drive mechanism to the influence of swaing the test. The utility model discloses a marine bearing sway test device can realize rolling, pitching, yawing and slope, and various use scenes of simulation marine bearing that can be more true provide the basis for the design and the manufacturing of marine bearing.

The utility model discloses an auxiliary stay's among marine bearing sway test device telescopic link can play the pre-adjustment effect, can be in order to adjust whole test bench high position, in case accomplish the adjustment, can adopt bolt locking device lock to die fixedly. When the telescopic link adopts hydraulic support, can play the damping effect to whole test bench.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a marine bearing sways test device which characterized in that: the device comprises a swing inclination test device, the swing inclination test device comprises a test bed, the marine bearing swing test device also comprises a space loading inverted bearing test bed positioned on the test bed, the space loading inverted bearing test bed comprises a driving motor, a transmission shaft, an unloading mechanism, a test shaft, a flexible loading device and a bearing support group, one end of the transmission shaft is in transmission connection with the driving motor, the other end of the transmission shaft is in transmission connection with the test bearing, and the unloading mechanism is used for unloading the deflection and vibration of the transmission shaft; the test shaft is used for sleeving a sliding bearing; the flexible loading device comprises a suspension assembly and a plurality of lifting mechanisms arranged at intervals along the peripheral side of the suspension assembly, a slotted hole structure used for assembling a sliding bearing and a test shaft is arranged in the suspension assembly, each lifting mechanism comprises a flexible piece, a first telescopic cylinder and a second telescopic cylinder, one end of each flexible piece is connected with the driving end of the corresponding first telescopic cylinder, the other end of each flexible piece is connected with the suspension assembly, and the driving end of the corresponding second telescopic cylinder faces upwards and is supported in the middle of the corresponding flexible piece; bearing support group is including rotating left bearing support and the right bearing support that supports at experimental axle both ends respectively, right side bearing support is towards transmission shaft one side, all install the bearing in left side bearing support and the right bearing support, the assembly of moving about of the bearing in the bearing support of a left side, the bearing fixed assembly in the bearing support of the right side.

2. The marine bearing sway test apparatus of claim 1, wherein: the bearing in the left bearing support is set as a first bearing, a first nut, a loading sleeve and an elastic piece are further installed in the left bearing support, an inner ring of the first bearing is clamped and fixed with the first nut through a shaft shoulder of the test shaft, the loading sleeve is arranged on the left side of an outer ring of the first bearing, and the elastic piece is used for applying acting force to the loading sleeve so that the loading sleeve is in elastic jacking contact with the outer ring of the first bearing.

3. The marine bearing sway test apparatus of claim 2, wherein: a first sleeve is arranged between the first nut and the first bearing inner ring, and a first labyrinth structure used for enhancing the sealing performance is arranged on the first sleeve.

4. The marine bearing sway test apparatus of claim 2, wherein: the loading sleeve is fixedly provided with a guide pin, the elastic piece is a spring, and the guide pin penetrates through the spring.

5. The marine bearing sway test apparatus of claim 4, wherein: and a pre-tightening sleeve is further installed in the left bearing support, and a positioning hole for inserting the spring is formed in the pre-tightening sleeve.

6. The marine bearing sway test apparatus of claim 2, wherein: still install first end cover, fixed cover and outer fixed ring in the bearing support of a left side, first bearing clearance assembly is in the inside of fixed cover, the both ends centre gripping of fixed cover is fixed between first end cover and outer fixed ring.

7. The marine bearing sway test apparatus of claim 1, wherein: a bearing in the right bearing support is set as a second bearing, a second nut, a second end cover and a third end cover are installed in the right bearing support, the outer ring of the second bearing is clamped and fixed between the second end cover and the third end cover, and the inner ring of the second bearing is clamped and fixed between a shaft shoulder of the test shaft and the second nut.

8. The marine bearing sway test apparatus of claim 7, wherein: and a second sleeve is arranged between the second nut and the second bearing inner ring, and a second labyrinth structure for enhancing the sealing property is arranged on the second sleeve.

9. The marine bearing sway test apparatus of claim 1, wherein: a buffer part and a tension sensor are also arranged between the flexible part and the suspension assembly or between the flexible part and the first telescopic cylinder; the driving end of the second telescopic cylinder is provided with a first pulley assembly for the flexible part to bypass, and the cylinder wall of the second telescopic cylinder is provided with a second pulley assembly for the flexible part to bypass.

10. The marine bearing sway test apparatus of claim 1, wherein: the swing and tilt test device comprises a bottom plate, a base with a rotation axis extending along the vertical direction is rotatably assembled on the bottom plate, the base is provided with a first driving mechanism for driving the base to rotate, the test device also comprises a test bed positioned on the upper side of the base, four corners of the test bed are respectively connected with the base through a servo telescopic cylinder, the upper end of the servo telescopic cylinder is connected with a test bed ball hinge, the lower end of the servo telescopic cylinder is connected with the base through a universal joint, the test device also comprises an auxiliary support used for restraining the test bed, the lower end of the auxiliary support is fixedly connected with the base, the upper end of the auxiliary support is connected with the test bed, the test bed comprises a frame and a swing platform which is rotatably assembled in the frame, the rotation axis of the swing platform extends along the front-back direction, and the frame is provided with a second driving mechanism for driving the swing platform to rotate and a braking mechanism for braking the swing platform.

Images