CN111337252A - Marine bearing swing test device - Google Patents

Abstract

The invention relates to a marine bearing swing test device. The test 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 positive bearing test bed positioned on the test bed, the space loading positive bearing test bed comprises a driving motor, a transmission shaft, an unloading mechanism, a test shaft, a flexible loading device and a bearing support, 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 sleeved with 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, and each lifting mechanism comprises a flexible piece, a first telescopic cylinder and a second telescopic cylinder. The invention realizes the flexible change of the direction of the applied load and ensures the accuracy of the test result.

Description

Marine bearing swing test device

Technical Field

The invention relates to the technical field of ships, in particular to a ship bearing swing test device.

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.

Disclosure of Invention

In order to solve the technical problems, the invention provides a marine bearing swing test device, which aims to solve the technical problems that a space loading upright bearing experiment table in the prior art is single in load applying direction, and the load applying direction cannot be flexibly adjusted.

The technical scheme of the marine bearing swing test device is as follows:

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 positive bearing test bed positioned on the test bed, the space loading positive bearing test bed comprises a driving motor, a transmission shaft, an unloading mechanism, a test shaft, a flexible loading device and a bearing support, 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; the bearing support has two, and two bearing support are located the both ends of test axle respectively and all rotate the assembly with the test axle, be provided with intermediate bottom in the bearing support, intermediate bottom separates the bearing support inner chamber for two oil storage chambeies, the last perforating hole that communicates two oil storage chambeies that is provided with of intermediate bottom, still be provided with the mounting hole that is used for assembling support bearing on the intermediate bottom, the assembly is only changeed with intermediate bottom to the outer lane of support bearing, be provided with on the bearing support with oil inlet and the oil-out of bearing support inner chamber intercommunication, still install the axle sensor that shakes that is used for monitoring the test axle vibration in the bearing support.

As the further improvement to above-mentioned technical scheme, establish the bearing that is close to transmission shaft one side into right bearing, establish into left bearing for another, the test axle is worn out from the left and right sides of right bearing, the left end of test axle is located left bearing, the left and right sides of right bearing and the right side of left bearing all are provided with the frizing end cover that supplies the test axle to pass, all are provided with between each frizing end cover and the test axle and are used for preventing the oily structure of receipts that lubricating oil leaked.

As a further improvement to the technical scheme, the oil receiving structure comprises an oil slinger groove arranged on the outer peripheral side of the test shaft and a circumferential oil groove arranged on the oil scraping end cover, the notch of the circumferential oil groove is opposite to the notch of the oil slinger groove, the oil slinger groove is used for throwing excessive lubricating oil into the circumferential oil groove when the test shaft rotates, and an oil return hole for communicating the circumferential oil groove with the oil storage cavity is further formed in the oil scraping end cover.

As a further improvement to the above technical scheme, still be provided with V type annular on scraping oil end cover, the notch orientation of V type annular is the same with the notch orientation of circumference oil groove, the both sides of circumference oil groove all are provided with V type annular.

As a further improvement of the technical scheme, a thrust end cover is hermetically arranged on the left bearing support, and the thrust end cover and the oil scraping end cover on the left bearing support are oppositely arranged.

As a further improvement to the technical scheme, the bearing support is provided with an anti-rotation rod, and an anti-rotation hole for inserting the end part of the anti-rotation rod is formed in the outer ring of the support bearing.

As a further improvement to the technical scheme, a U-shaped frame is fixed in the oil storage cavity, the test shaft penetrates through the U-shaped frame, and the shaft vibration sensor is mounted on the U-shaped frame.

As a further improvement of the technical scheme, the oil inlet is arranged at a position higher than the oil outlet.

As a further improvement of the above technical scheme, a main shaft of the driving motor is in transmission connection with the transmission shaft through a synchronous belt, a motor base is arranged at the bottom of the driving motor, the driving motor is assembled on the motor base in a guiding sliding manner, adjusting blocks are arranged on the motor base, at least two adjusting blocks are arranged and divided into two rows, the driving motor is installed between the two rows of adjusting blocks, adjusting bolts are assembled on the adjusting blocks through threads, and the driving motor is clamped and fixed between the two rows of adjusting bolts.

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 invention provides a marine bearing swing test device, which has the following beneficial effects compared with the prior art:

the marine bearing swing test device can realize rolling, pitching, yawing and tilting, can simulate various use scenes of the marine bearing more truly, and provides a basis for design and manufacture of the marine bearing. In the test process, the traction force of each flexible part can be adjusted by adjusting the extension amount of the first telescopic cylinder and the second telescopic 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. In addition, by arranging the unloading mechanism and the transmission shaft, the deflection and the vibration caused by the driving mechanism can be weakened and can not be directly transmitted to the test shaft, so that the accuracy of a test result is ensured. According to the invention, the bearing support is provided with the oil inlet, the oil outlet, the oil storage cavity and the like, so that the supporting bearing and the test shaft can be lubricated by adopting a circulating oil way, and the lubricating effect is improved.

Drawings

FIG. 1 is a first schematic structural diagram of a sway and inclination testing device in the sway testing device for marine bearings according to the present invention;

FIG. 2 is a second schematic structural view of a rolling inclination test device in the marine bearing rolling test device of the present invention;

FIG. 3 is a schematic structural diagram of a test bed in a roll and tilt test device in the marine bearing roll test device of the present invention;

FIG. 4 is a schematic structural diagram of a servo hydraulic cylinder in a roll and tilt test device in the marine bearing roll test device of the present invention;

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

FIG. 6 is a schematic view showing the assembly of the base and the bottom plate in the roll inclination testing device of the marine bearing roll testing device according to 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 roll and tilt test apparatus in the rolling test apparatus for marine bearings according to the present invention;

FIG. 9 is a schematic structural diagram of a base in a roll and tilt test apparatus in the marine bearing roll test apparatus of the present invention;

FIG. 10 is a schematic structural view of a driving mechanism in a roll and tilt testing apparatus in the marine bearing roll testing apparatus 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 roll and tilt test apparatus of the marine bearing roll test apparatus according to the present invention;

FIG. 17 is a second schematic structural view of a test stand in a roll and tilt test apparatus of the rolling test apparatus for marine bearings according to the present invention;

FIG. 18 is a third schematic structural view of a test stand in a roll and tilt test apparatus of the rolling test apparatus for marine bearings according to the present invention;

FIG. 19 is a schematic structural view of an auxiliary support in the rolling inclination test device in the marine bearing rolling test device of the present invention;

FIG. 20 is a schematic structural diagram of a gantry support and a flexible traction mechanism in a roll and tilt test device in the marine bearing roll test device of the present invention;

FIG. 21 is a schematic structural view of a flexible traction mechanism in a roll and pitch test apparatus in the marine bearing roll test apparatus of the present invention;

FIG. 22 is a schematic view of the overall structure of a space-loading upright bearing test bed in the rolling test device for marine bearings according to the present invention;

FIG. 23 is an enlarged view of a portion of FIG. 22 at A;

FIG. 24 is a top view of the overall structure of the space loading upright bearing test bed in the rolling test device for marine bearings of the present invention;

FIG. 25 is a schematic cross-sectional view taken at B-B of FIG. 24;

FIG. 26 is an enlarged schematic view of the internal structure of the bearing support of FIG. 25;

FIG. 27 is an enlarged schematic view at C of FIG. 25;

FIG. 28 is a perspective view of a part of the structure of a space loading upright bearing test bed in the marine bearing sway testing apparatus of the present invention;

FIG. 29 is a schematic perspective view of a flexible loading device of a spatial loading upright bearing test bed in the marine bearing sway testing apparatus of the present invention;

FIG. 30 is a perspective view of a lifting mechanism of a space loading upright bearing test bed in the marine bearing sway testing apparatus of the present invention;

FIG. 31 is a perspective view of a suspension assembly of a space loading upright bearing test bed in the marine bearing sway testing apparatus of the present invention;

FIG. 32 is a schematic cross-sectional view of a suspension assembly of a space-loading upright bearing test bed in the marine bearing sway testing apparatus of the present invention;

FIG. 33 is a schematic structural view of a 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 synchronous belt; 42. an unloading mechanism; 43. a right bearing support; 44. a left bearing support; 45. a flexible loading device; 46. an adjusting block; 47. adjusting the bolt; 48. fixing the bolt; 49. a test shaft; 50. suspension assembly; 51. a drive shaft; 52. a motor base; 53. a thrust end cap; 54. a middle partition plate; 55. a through hole; 56. a U-shaped frame; 57. an oil storage chamber; 58. a rotation prevention lever; 59. a support bearing; 60. an oil throwing ring groove; 61. a circumferential oil groove; 62. a V-shaped ring groove; 63. an oil return hole; 64. an oil outlet; 65. an oil inlet; 66. a lifting mechanism; 67. lifting the base; 68. a second telescoping cylinder; 69. a first telescoping cylinder; 70. a buffer member; 71. a tension sensor; 72. a flexible member; 73. a first sheave assembly; 74. a second sheave assembly; 75. a guide plate; 76. a suspension chassis; 77. a slotted hole structure; 78. a housing; 79. a support table; 80. a liner; 81. a sliding bearing.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with 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 specific embodiment of the marine bearing swing test device comprises a swing inclination test device and a space loading upright bearing experiment table.

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 33, the spatial loading upright bearing test bed includes a driving motor 40, a transmission shaft 51, an unloading mechanism 42, a test shaft 49, a flexible loading device 45, and a bearing support, wherein one end of the transmission shaft 51 is in transmission connection with the driving motor 40, and the other end of the transmission shaft 51 is in transmission connection with the test shaft 49, and the unloading mechanism 42 is used for unloading the deflection and vibration of the transmission shaft 51; the test shaft 49 is used for sleeving a sliding bearing 81; the flexible loading device 45 comprises a suspension assembly 50 and a plurality of lifting mechanisms 66 arranged at intervals along the outer peripheral side of the suspension assembly 50, a slotted hole structure 77 for assembling a sliding bearing 81 and a test shaft 49 is arranged in the suspension assembly 50, each lifting mechanism 66 comprises a flexible piece 72, a first telescopic cylinder 69 and a second telescopic cylinder 68, one end of each flexible piece 72 is connected with the driving end of the corresponding first telescopic cylinder 69, the other end of each flexible piece 72 is connected with the corresponding suspension assembly 50, and the driving end of each second telescopic cylinder 68 faces upwards and props against the middle of the corresponding flexible piece 72; the bearing support has two, and two bearing support are located the both ends of test axle 49 respectively and all rotate with test axle 49 and assemble, be provided with intermediate bottom 54 in the bearing support, intermediate bottom 54 separates the bearing support inner chamber for two oil storage chambeies 57, be provided with the perforating hole 55 of two oil storage chambeies 57 of intercommunication on the intermediate bottom 54, still be provided with the mounting hole that is used for assembling support bearing 59 on the intermediate bottom 54, support bearing 59's outer lane and intermediate bottom 54 spline assembly, be provided with on the bearing support with oil inlet 65 and the oil-out 64 of bearing support inner chamber intercommunication, still install the axle that is used for monitoring test axle 49 vibration in the bearing support and shake the sensor.

Specifically, in this embodiment, the driving motor 40 is a servo motor, the bottom of the driving motor 40 is provided with a motor base 52, the main shaft of the driving motor 40 in this embodiment is in transmission connection with a transmission shaft 51, the transmission connection is specifically transmission of a synchronous belt 41, that is, a large belt pulley is arranged on the main shaft of the driving motor 40, a small belt pulley is arranged at the corresponding end of the transmission shaft 51, the diameter of the large belt pulley is larger than that of the small belt pulley, and the synchronous belt 41 is wound on the outer peripheral sides of the large belt pulley and the small belt. When the main shaft of the driving motor 40 rotates, the large belt pulley drives the synchronous belt 41 to rotate, and the synchronous belt 41 drives the small belt pulley to rotate, so that the driving shaft 51 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.

In order to reduce the vibration of the driving motor 40, four vibration isolators are disposed between the driving motor 40 and the motor base 52 in this embodiment, and the four vibration isolators are respectively located at four bottom corners of the driving motor 40, and in this embodiment, the vibration isolators are specifically rubber pads. In the embodiment, the driving motor 40 is mounted on the motor base 52 through the fixing bolt 48 and the fixing nut, and the fixing bolts 48 are mounted at four bottom corner positions of the driving motor 40. In the embodiment, the motor base 52 is provided with a long hole for the fixing bolt 48 to pass through, and corresponding to the fixing bolt 48, in the embodiment, the motor base 52 is provided with four long holes, and each long hole is perpendicular to the extending direction of the main shaft of the driving motor 40, so that the fixing bolt 48 can slide transversely in the long hole, and the position of the driving motor 40 can be moved. After the position of the driving motor 40 is adjusted to a proper position, in order to fix the position of the driving motor 40, in this embodiment, four adjusting blocks 46 are further welded and fixed on the motor base 52, the four adjusting blocks 46 are divided into two rows, the driving motor 40 is installed between the two rows of adjusting blocks 46, in this embodiment, each adjusting block 46 is threaded with one adjusting bolt 47, each adjusting bolt 47 extends along the extending direction of the long hole, after the driving motor 40 is adjusted along each long hole, the adjusting bolts 47 on the two sides of the driving motor 40 are rotated to the position where the driving motor 40 is pressed and contacted, and thus, the position of the driving motor 40 can be fixed by clamping and fixing the adjusting bolts 47 on the two sides. It should be noted that, because the main shaft of the driving motor 40 is in transmission connection with the transmission shaft 51 through the timing belt 41, when the tightness of the timing belt 41 needs to be adjusted, the driving motor 40 is moved along the long hole, and after the driving motor is moved to the right position, the adjusting bolts 47 on both sides of the driving motor 40 are rotated to be in pressing contact with the driving motor 40.

In this embodiment, the transmission shaft 51 is a transmission rod, one end of the transmission rod is in transmission connection with the synchronous belt 41, and the other end of the transmission rod is in transmission connection with the test shaft 49 through a coupler. Since the timing belt 41 applies a lateral force to the transmission shaft 51, in order to avoid a situation that the transmission shaft 51 is bent largely, the unloading mechanism 42 is further installed at the transmission shaft 51 in the present embodiment. The unloading mechanism 42 includes an unloading bearing seat and an unloading base, and the unloading bearing seat is mounted on the unloading base. The unloading bearing seat is internally provided with two unloading bearings, the unloading bearings are angular contact ball bearings, the unloading bearings in the embodiment are provided with two unloading mounting holes for mounting the two unloading bearings, two ends of each unloading mounting hole 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 a spacer sleeve for separating the two unloading bearings is sleeved on the outer peripheral side of the transmission shaft 51. In the embodiment, the transmission shaft 51 is inserted into the inner rings of the two unloading bearings, and the tension and vibration of the synchronous belt 41 are weakened by the radial limiting effect of the unloading bearings.

In this embodiment, the test shaft 49 is a rotating rod, and one end of the test shaft 49 is in transmission connection with the transmission shaft 51. In the embodiment, the test shaft 49 and the transmission shaft 51 are coaxially arranged, and in order to keep the test shaft 49 at the set position, two bearing supports are further included in the embodiment, and for convenience of description, the bearing support on the side close to the transmission shaft 51 is referred to as a right bearing support 43, and the other bearing support is referred to as a left bearing support 44.

In the embodiment, the inside of the left bearing support 44 is hollow, the support bearing 59 is installed in the left bearing support 44, the left end of the test shaft 49 penetrates through the right side of the left bearing support 44 and then penetrates through the inner ring of the support bearing 59, in the embodiment, the left end of the test shaft 49 is located in the left bearing support 44, in order to achieve a sealing effect, the thrust end cap 53 is installed on the left side of the left bearing support 44 in the embodiment, the thrust end cap 53 is installed in a sealing manner through a screw, and in the embodiment, the thrust end cap 53 is also used for blocking the left end of the test shaft 49 so as to prevent the test shaft 49 from protruding out of the left bearing support 44.

In the present embodiment, the intermediate partition plate 54 is disposed in the cavity of the left bearing support 44, the intermediate partition plate 54 divides the left bearing support 44 into two left and right oil storage chambers 57, the intermediate partition plate 54 is provided with a mounting hole for mounting the supporting bearing 59, in order to realize the constraint of the supporting bearing 59, in the present embodiment, an annular groove is disposed on the outer ring of the supporting bearing 59, and during assembly, the intermediate partition plate 54 is partially embedded in the annular groove. In order to further realize the restraint of the supporting bearing 59, in the embodiment, the anti-rotation rod 58 is further installed on the left bearing support 44, the anti-rotation rod 58 is assembled on the left bearing support 44 in a threaded manner, an anti-rotation hole for inserting the end part of the anti-rotation rod 58 is formed in the outer ring of the supporting bearing 59, and the restraint of the supporting bearing 59 is realized through the stopping and limiting of the anti-rotation rod 58 and the wall of the anti-rotation hole.

In this embodiment, the two oil storage chambers 57 are used for storing lubricating oil, in order to realize the circulation flow of the lubricating oil, an oil inlet 65 and an oil outlet 64 are provided on the left bearing support 44 in this embodiment, and in order to facilitate the backflow of the lubricating oil, the oil inlet 65 is provided at a position higher than the oil outlet 64 in this embodiment. In addition, in order to communicate the two oil storage chambers 57, the intermediate partition plate 54 is further provided with a through hole 55 in the present embodiment. During the detection process, the lubricating oil flows into the left bearing support 44 from the oil inlet 65 and then flows back to the lubricating oil tank from the oil outlet 64, so that the circulating lubrication is realized.

In order to avoid the situation that the lubricating oil overflows along the test shaft 49, in the embodiment, an oil scraping end cover is further installed on the left bearing support 44, the oil scraping end cover is arranged opposite to the thrust end cover 53, a through hole for the test shaft 49 to pass through is formed in the oil scraping end cover, and an oil collecting structure for preventing the lubricating oil from leaking is arranged between the oil scraping end cover and the test shaft 49. The oil receiving structure in this embodiment includes an oil slinger groove 60 disposed on the outer peripheral side of the test shaft 49 and a circumferential oil groove 61 disposed on the oil scraping end cover, the notch of the circumferential oil groove 61 is disposed opposite to the notch of the oil slinger groove 60, and the cross-sectional dimension of the circumferential oil groove 61 in this embodiment is much larger than that of the oil slinger groove 60. The cross section of the circumferential oil groove 61 is rectangular, the cross section of the slinger groove 60 is V-shaped, and the notch of the circumferential oil groove 61 covers the notch of the slinger groove 60 on the inner side. In this embodiment, an oil return hole 63 for communicating the circumferential oil groove 61 with the oil storage chamber 57 is further provided in the oil scraping end cover. Lubricating oil can flow along test shaft 49 in this embodiment, when flowing to the frizing end cover department, sets up and to throw excessive lubricating oil into circumference oil groove 61 along epaxial oil slinging ring groove 60 under the effect of centrifugal force in, then lubricating oil can be via flowing back again to in the oil storage chamber 57. In this embodiment, two V-shaped ring grooves 62 are further provided on the oil scraping end cover, and the two V-shaped sliding grooves are respectively located on the left and right sides of the circumferential oil groove 61 and are arranged in parallel with the circumferential oil groove 61, i.e., the notch orientation of the V-shaped ring groove 62 is the same as the notch orientation of the circumferential oil groove 61. The two V-ring grooves 62 function to store lubricating oil, thereby enhancing the sealing between the test shaft 49 and the wiper end cap.

In order to monitor the vibration at the two ends of the test shaft 49, in this embodiment, a U-shaped frame 56 is installed in one of the oil storage cavities 57 of the left bearing support 44, the test shaft 49 penetrates through the middle of the U-shaped frame 56, and a shaft vibration sensor, specifically an eddy current sensor, is fixed to the top of the U-shaped frame 56 through a thread. In the present embodiment, one eddy current sensor is also installed in the right bearing support 43, and the two eddy current sensors can monitor the shaft vibration at the two ends of the test shaft 49, respectively.

In the present embodiment, the internal structure of the right bearing support 43 is the same as that of the left bearing support, and the right bearing support 43 and the left bearing support are arranged in mirror symmetry, and detailed description is omitted in the present embodiment, and the difference between the right bearing support 43 and the left bearing support 44 is that in order to enable the test shaft 49 to pass through the left bearing support 44, an oil scraping end cover is arranged on each of the left and right sides of the right bearing support 43 in the present embodiment, and detailed description is omitted in the present embodiment because the oil scraping end covers of the right bearing support 43 and the oil scraping end covers of the left bearing support 44 are the same in.

The flexible loading device 45 in this embodiment includes a suspension assembly 50 and a plurality of lifting mechanisms 66 arranged at intervals along the outer circumferential side of the suspension assembly 50; there are four lifting mechanisms 66, four lifting mechanisms 66 are respectively arranged at four positions of the suspension assembly 50, and the suspension assembly 50 is located at the center of the four lifting mechanisms 66.

Each lifting mechanism 66 in this embodiment includes a first telescopic cylinder 69 and a second telescopic cylinder 68 that are arranged in parallel, the first telescopic cylinder 69 and the second telescopic cylinder 68 are both arranged to extend along the vertical direction, and the driving ends are both located at the top, in this embodiment, the first telescopic cylinder 69 and the second telescopic cylinder 68 are both hydraulic telescopic cylinders, and in other embodiments, the first telescopic cylinder 69 and the second telescopic cylinder 68 may also be electric push rods, air cylinders, and the like. In this embodiment, the first telescoping cylinder 69 has a smaller dimension than the second telescoping cylinder 68, and the second telescoping cylinder 68 is located between the suspension assembly and the first telescoping cylinder 69. The flexible member 72 is a steel cable in this embodiment, but the flexible member 72 may be hemp, chain, high strength carbon fiber cable, etc. in other embodiments. One end of the flexible member 72 is connected and fixed with the driving end of the first telescopic cylinder 69, and the other end is used for connecting with the suspension assembly, in this embodiment, the second telescopic cylinder 68 is supported at the middle position of the flexible member 72, and because the size specification of the second telescopic cylinder 68 is larger, the flexible member 72 integrally presents an arch shape with the middle protruding upwards and the two ends extending downwards.

Since the flexible element 72 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 72, in the embodiment, a buffer element 70 is installed between the flexible element 72 and the suspension assembly, and in the embodiment, the buffer element 70 is a tension spring. In other embodiments the buffer member 70 may be mounted at a position between the flexible member 72 and the first telescopic cylinder 69.

In order to facilitate observation of the acting force applied to each flexible member 72, in this embodiment, a tension sensor 71 is further installed between the buffer member 70 and the suspension assembly, and the tension sensor 71 can monitor the acting force between the flexible member 72 and the suspension assembly in real time, so that a worker can obtain corresponding tension data in time. In other embodiments, the tension sensor 71 may be mounted at other positions between the flexible member 72 and the first telescopic cylinder 69.

Since the flexible member 72 is wound around the top (driving end) of the second telescopic cylinder 68, in order to avoid the situation that the flexible member 72 is easily worn due to high friction, a first pulley assembly 73 is installed on the top of the second telescopic cylinder 68 in the present embodiment. In order to avoid the situation that the flexible member 72 is easily separated from the first pulley assembly 73, the first pulley assembly 73 in this embodiment includes three pulleys, the three pulleys are arranged in a straight line, and the flexible member 72 sequentially passes around the corresponding pulleys in a wavy manner.

To avoid contact between the flexible member 72 and the second telescoping cylinder 68, a second pulley assembly 74 is also mounted to the cylinder wall of the second telescoping cylinder 68 in this embodiment. The second pulley assembly 74 in this embodiment includes only one pulley that is braced between the second telescoping cylinder 68 and the flexible member 72, thereby avoiding contact between the flexible member 72 and the second telescoping cylinder 68. It should be noted that, in order to further realize the limiting effect on the flexible member 72, each pulley in this embodiment is a concave wheel, that is, the outer peripheral surface of each pulley is provided with an annular groove for the flexible member 72 to transversely insert.

Since the first pulley assembly 73 moves up and down with the expansion and contraction of the second telescopic cylinder 68, in order to enhance the guiding effect, a guiding plate 75 is further installed on the cylinder wall of the second telescopic cylinder 68 in the present embodiment, and the guiding plate 75 is also extended in the up-down direction. The guide plates 75 are arranged on two sides of the second telescopic cylinder 68 symmetrically in the embodiment, a guide groove is formed in each guide plate 75, the corresponding two sides of the first pulley component 73 are provided with a slider protrusion inserted into the corresponding guide groove, the slider protrusion can slide in the guide groove in a guiding mode, and the guide effect is enhanced through the limiting effect of the slider protrusion and the guide groove.

The suspension assembly in this embodiment includes an inner liner 80 and an outer shell 78, wherein the inner liner 80 is mounted inside the outer shell 78. Because the sliding bearing 81 is installed in the suspension assembly, in order to facilitate the installation of the sliding bearing 81, the inner lining 80 and the outer shell 78 are both separately and detachably installed in this embodiment. Specifically, in the embodiment, the suspension assembly is in a spherical shape, the shell 78 corresponds to the spherical shell 78, and the lining 80 is also in a spherical structure. In this embodiment, the outer shell 78 includes upper and lower portions that are both hemispherical, and the inner liner 80 includes upper and lower portions that are both hemispherical. The two parts of the outer shell 78 are fixed by bolts, and the two parts of the inner lining 80 are also fixed by bolts. In this embodiment, the inner liner 80 can rotate in the outer casing 78, and in order to limit the rotation direction, the outer circumferential surface of the inner liner 80 is provided with a strip-shaped protrusion, and the inner wall of the outer casing 78 is correspondingly provided with a guide groove for the strip-shaped protrusion to be inserted transversely.

In this embodiment, the inner liner 80 is provided with a slot structure 77 for mounting the sliding bearing 81 and the test shaft 49. The slot structure 77 in this embodiment comprises a ring of annular grooves provided on the inner wall of the liner 80 and a circular through hole that extends through both the liner 80 and the outer shell 78. When the sliding bearing 81 is installed, the sliding bearing 81 is transversely inserted into the annular groove of one half of the lining 80, and then the other half of the lining 80 is buckled. The test shaft 49 is correspondingly buckled in the circular through hole.

In this embodiment, each suspension assembly and each tension sensor 71 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 71, and the spherical ball is fixedly connected with the housing 78 of the suspension assembly.

In order to avoid the situation that the flexible element 72 needs to pull the suspension assembly during non-detection, a support table 79 is arranged below the suspension assembly in the embodiment, and a limit groove matched with the bottom outline of the suspension assembly is arranged on the top surface of the support table 79. Because the suspension assembly is spherical in this embodiment, correspondingly, the limiting groove is also a curved groove in this embodiment.

In this embodiment, a suspension chassis 76 is further mounted on the bottom of the support table 79, and in this embodiment, the suspension chassis 76, the left bearing support 44, and the right bearing support 43 are all mounted on the same substrate. In this embodiment, a lifting base 67 is further installed at the bottom of each lifting mechanism 66.

The working process of the invention is as follows: when detection is needed, firstly, the sliding bearing 81 is sleeved and fixed on the test shaft 49, then the sliding bearing 81 and the test shaft 49 are installed in the slotted hole structure 77 of the suspension assembly, then the adjustment of the tensile force applied to the corresponding flexible piece 72 can be realized by adjusting the expansion amount of the first telescopic cylinder 69 and the second telescopic cylinder 68 of each lifting mechanism 66, so that the adjustment and setting of the loading force of the sliding bearing 81 are realized, finally, the driving motor 40 is started, the driving motor 40 can drive the test shaft 49 to rotate, and the operation condition of the sliding bearing 81 is 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.

In summary, in the swing test device for the marine bearing according to the embodiments of the present invention, in the test process, the adjustment of the traction force of each flexible member 72 can be achieved by adjusting the extension and retraction amounts of the first telescopic cylinder 69 and the second telescopic cylinder 68, and the resultant force formed by the traction force of each flexible member 72 can be adjusted along with the change, so that the flexible change of the direction of the applied load is achieved, and the detection of the sliding bearing 81 is facilitated. In addition, by arranging the unloading mechanism 42 and the transmission shaft 51, the invention can weaken the deflection and vibration caused by the driving mechanism without directly transmitting to the test shaft 49, thus ensuring the accuracy of the test result. In the invention, the bearing support is provided with the oil inlet 65, the oil outlet 64, the oil storage cavity 57 and the like, so that the supporting bearing 59 and the test shaft 49 can be lubricated by adopting a circulating oil path, and the lubricating effect is improved.

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

Claims (10)

1. Marine bearing sways test device, its 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 forward bearing test bed positioned on the test bed, the space loading forward bearing test bed comprises a driving motor, a transmission shaft, an unloading mechanism, a test shaft, a flexible loading device and a bearing support, 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; the bearing support has two, and two bearing support are located the both ends of test axle respectively and all rotate the assembly with the test axle, be provided with intermediate bottom in the bearing support, intermediate bottom separates the bearing support inner chamber for two oil storage chambeies, the last perforating hole that communicates two oil storage chambeies that is provided with of intermediate bottom, still be provided with the mounting hole that is used for assembling support bearing on the intermediate bottom, the assembly is only changeed with intermediate bottom to the outer lane of support bearing, be provided with on the bearing support with oil inlet and the oil-out of bearing support inner chamber intercommunication, still install the axle sensor that shakes that is used for monitoring the test axle vibration in the bearing support.

2. The marine bearing sway test apparatus of claim 1, wherein: establish the bearing support who is close to transmission shaft one side into right bearing support, establish into left bearing support for another, the test axle is worn out from the left and right sides of right bearing support, the left end of test axle is located left bearing support, the left and right sides of right bearing support and the right side of left bearing support all are provided with the frizing end cover that supplies the test axle to pass, all are provided with between each frizing end cover and the test axle and are used for preventing the oily structure of receipts that lubricating oil leaked.

3. The marine bearing sway test apparatus of claim 2, wherein: the oil receiving structure comprises an oil slinger groove arranged on the outer peripheral side of the test shaft and a circumferential oil groove arranged on the oil scraping end cover, wherein a notch of the circumferential oil groove is arranged opposite to a notch of the oil slinger groove, the oil slinger groove is used for throwing excessive lubricating oil into the circumferential oil groove when the test shaft rotates, and an oil return hole for communicating the circumferential oil groove with an oil storage cavity is further formed in the oil scraping end cover.

4. The marine bearing sway test apparatus of claim 3, wherein: scrape still to be provided with V type annular on the oil end cover, the notch orientation of V type annular is the same with the notch orientation of circumference oil groove, the both sides of circumference oil groove all are provided with V type annular.

5. The marine bearing sway test apparatus of claim 2, wherein: and the thrust end cover is hermetically arranged on the left bearing support and is opposite to the oil scraping end cover on the left bearing support.

6. The marine bearing sway test apparatus of claim 1, wherein: the anti-rotation rod is mounted on the bearing support, and an anti-rotation hole for inserting the end part of the anti-rotation rod is formed in the outer ring of the supporting bearing.

7. The marine bearing sway test apparatus of claim 1, wherein: the oil storage cavity is internally fixed with a U-shaped frame, the test shaft penetrates through the U-shaped frame, and the shaft vibration sensor is installed on the U-shaped frame.

8. The marine bearing sway test apparatus of claim 1, wherein: the oil inlet is arranged at a position higher than the oil outlet.

9. The marine bearing sway test apparatus of claim 1, wherein: the main shaft of the driving motor is connected with the transmission shaft through the synchronous belt, the bottom of the driving motor is provided with a motor base, the driving motor is assembled on the motor base in a guide sliding mode, the motor base is provided with adjusting blocks, the adjusting blocks are at least two and are divided into two rows, the driving motor is installed between the two rows of adjusting blocks, adjusting bolts are assembled on threads of the adjusting blocks, and the driving motor is clamped and fixed between the two rows of adjusting bolts.

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.

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