CN116380342A

CN116380342A - Bearing dynamic balance test auxiliary device

Info

Publication number: CN116380342A
Application number: CN202310415543.9A
Authority: CN
Inventors: 汪文政; 汪姝含; 汪泽; 曹培斌; 路新庆; 蒋义志; 蒋克飞
Original assignee: Linqing Wanda Bearing Co ltd
Current assignee: Linqing Wanda Bearing Co ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-07-04
Anticipated expiration: 2043-04-18
Also published as: CN116380342B

Abstract

The invention relates to the field of bearing test, in particular to a bearing dynamic balance test auxiliary device, which comprises a circular table, a supporting plate, an upright plate, an inner supporting part, a driving part and a detecting part, wherein the circular table is arranged on the supporting plate; the invention can solve the following problems in the process of carrying out the dynamic balance test on the bearing in the prior art: the vibration amplitude generated by the bearing outer ring under the action of centrifugal force is not excessive, so that the vibration generated by the bearing outer ring is insufficient to be conducted to the machine; whether the bearing is qualified or not cannot be judged through the vibration frequency of the machine table, and the test result of the bearing is affected; the outer ring of the bearing is not limited and fixed, so that the inner ring and the outer ring of the bearing can be easily rotated synchronously, or the rotating speed between the inner ring and the outer ring of the bearing is small; at this time, the bearing can not vibrate during high-speed rotation, so that whether the dynamic balance of the bearing is qualified or not can not be judged, and the testing accuracy is affected.

Description

Bearing dynamic balance test auxiliary device

Technical Field

The invention relates to the field of bearing testing, in particular to a dynamic balance testing auxiliary device for a bearing.

Background

The bearing is an important part in modern mechanical equipment, and has the main functions of supporting a mechanical rotating body, reducing the friction coefficient in the motion process and ensuring the rotation precision; bearings are commonly used for rotational connection of shaft-like parts such as automobile spindles, machine spindles, motor rotors, and the like.

In practical application, the inner ring and the outer ring of the bearing rotate relatively, if the mass of each part of the outer ring of the bearing is uneven or the diameters of the parts of the outer ring of the bearing are unequal, the bearing is easy to be unbalanced in the rotation process, the outer ring of the bearing can generate centrifugal force in the rotation process, and the centrifugal force can not be counteracted by the bearing, so that the bearing is easy to vibrate and noise, the using effect is influenced, and the service life of the bearing is also reduced; therefore, in order to ensure that the bearing is more stable in use, dynamic balance test is required.

To the dynamic balance test of bearing, relevant technical scheme has been proposed to relevant field's technician, for carrying out more accurate contrast, chinese patent publication No. CN113567126a discloses a shield constructs quick-witted high-speed bearing dynamic balance detection device, including bottom plate, main motor and expansion device and bottom guide way, main motor is installed at the top of bottom plate, main motor shaft is installed to the output of main motor, the action wheel has been cup jointed on the surface of main motor shaft, be provided with the pulling belt on the surface of action wheel, guide post and stretching strap spring are installed at the top of bottom plate, the belt pulley is installed in the one end rotation of guide post.

When the device is used, the high-speed bearing is driven to rotate through the iron rod, and meanwhile, the movable seat of the movable seat moves in the guide block groove and drives the pressing shaft cover to cover the iron rod, so that the detected bearing is covered; during the period, the speed change gear is reversely driven by the connection of the round wheel and the reversing swing rod, the unfolding wheel is driven to be reduced by the speed change sliding block, the transmission ratio is reduced, the iron rod drives the bearing to rotate at a high speed, and when the vibration frequency of the machine is too high, the dynamic balance of the bearing is detected to be unqualified; the shield machine high-speed bearing dynamic balance detection device adopts linkage design, saves energy, is easy to maintain and replace, is suitable for bearing dynamic balance detection occasions, and enables the bearing dynamic balance detection process to be easier and more effective.

However, the above-mentioned dynamic balance detecting device for high-speed bearings has some drawbacks in the practical use process: 1. although whether the dynamic balance of the bearing is qualified or not can be detected through the vibration frequency of the machine table, the bearing is a precise part; therefore, even if the dynamic balance of the bearing is unqualified, the vibration amplitude generated by the outer ring of the bearing under the action of centrifugal force is not excessive, so that the generated vibration is not sufficiently transmitted to the machine; if the dynamic balance of the bearing is unqualified and the vibration amplitude is smaller, whether the bearing is qualified or not cannot be judged through the vibration frequency of the machine table, and then the test result of the bearing is affected.

2. In addition, as the balls are arranged between the inner ring and the outer ring of the bearing, and the inner ring of the bearing rotates along with the iron rod when the iron rod drives the bearing to rotate, the outer ring of the bearing is not limited and fixed, so that the inner ring and the outer ring of the bearing can be easily rotated synchronously, or the rotating speed between the inner ring and the outer ring of the bearing is smaller; at this time, the bearing cannot vibrate, so that whether the dynamic balance of the bearing is qualified or not cannot be judged, and the testing accuracy is affected.

Therefore, under the above stated viewpoints, there is room for improvement in the conventional dynamic balance detecting device for bearings.

Disclosure of Invention

In order to solve the problems, the invention provides a dynamic balance test auxiliary device for a bearing, which comprises a circular table for placing the bearing, wherein two support plates are symmetrically arranged on the outer wall of the circular table along the axis of the circular table, an upright plate is arranged at the lower end of the support plate, an inner support part is arranged on a support bracket and comprises a plurality of pushing rods which are uniformly distributed annularly along the circular table and are connected to the circular table in a sliding manner, a driving part is arranged on the support plate and comprises an elastic belt for stirring the bearing to rotate, and a detection part is arranged below the inner support part.

The detection component comprises a positioning plate, the lower ends of two pushing rods which are arbitrarily opposite on the circular table are provided with the positioning plate, the positioning plate and the supporting plate are arranged in a staggered mode, a connecting block is arranged on the positioning plate, a stabilizing component is arranged inside the connecting block, a vertical test plate is arranged at the upper end of the stabilizing component, a marking component is arranged at the lower end of the stabilizing component, and the marking component comprises a marking pen used for drawing vibration amplitude of an outer ring of a bearing.

Preferably, the inner supporting part further comprises a plurality of displacement holes which are formed in the circular table and correspond to the positions of the pushing rods, the pushing rods are slidably connected in the displacement holes, a plurality of cylindrical grooves which are distributed annularly and correspond to the positions of the displacement holes are uniformly formed in the circular table, the cylindrical grooves are communicated with the displacement holes, and a screw rod which penetrates through the pushing rods in a threaded connection mode is rotationally connected in the cylindrical grooves;

one side of the screw rod, which is close to the axis of the circular table, is sleeved with a driven bevel gear, the lower end of the circular table is provided with a first motor through a motor base, an output shaft of the first motor extends into the circular table and is sleeved with a driving bevel gear which is meshed with the driven bevel gears, and the upper end of the circular table is also provided with a locking assembly.

Preferably, the locking subassembly includes the column spinner, and circular bench upper end rotates to be connected with the column spinner, and the output shaft of first motor is connected with the column spinner lower extreme, and column spinner outer wall cover is equipped with the cam, and the cam outer wall evenly is provided with a plurality of annular distribution's arc arch, and the ring channel has been seted up to the cam lower extreme, and circular bench upper end evenly installs a plurality of annular distribution's support column, and the support column upper end rotates to be connected inside the ring channel, and the fixing base of contradicting with the arc arch slides is installed to one side that the pushing rod is close to the cam.

Preferably, the driving part further comprises a rotating shaft, the upper ends of the supporting plates are symmetrically connected with two rotating shafts in a rotating mode along the width direction of the supporting plates, tensioning shafts are rotatably arranged between the two rotating shafts at the upper ends of the same supporting plate, elastic belts are sleeved between the two rotating shafts and the tensioning shafts together, a plurality of longitudinal anti-slip strips are arranged on the outer walls of the elastic belts at equal intervals, horizontal plates are arranged on the same sides of the two supporting plates, positioning shafts are rotatably connected on the horizontal plates, the positioning shafts are connected with the adjacent rotating shafts through belt transmission, the two positioning shafts are connected through belt transmission, and a second motor connected with the positioning shafts is arranged at the lower end of any one horizontal plate through a motor cover.

Preferably, the locating plates are provided with sliding grooves, the connecting blocks are slidably connected in the sliding grooves, threaded rods are rotatably connected in the locating plates, the threads on the outer walls of the threaded rods in the two locating plates are opposite in rotation direction, the threaded rods penetrate through the connecting blocks in a threaded connection mode, and a telescopic rod is arranged between the two threaded rods;

two bidirectional screws used for driving the connecting blocks to move relatively or move oppositely are formed between the two threaded rods with opposite rotation directions and the telescopic rod.

Preferably, the stabilizing component comprises a return type frame, two linkage holes are symmetrically formed in the connecting block along the threaded rod, the return type frame is connected with the two linkage holes in a common rotating mode, a pin shaft which rotates to penetrate through the return type frame is arranged in the middle of the linkage hole, a vertical test plate is arranged at the upper end of the return type frame, two fixing plates are symmetrically arranged at each linkage hole at the upper end of the connecting block along the return type frame, and a supporting spring rod is hinged between each fixing plate and the return type frame.

Preferably, the marking assembly further comprises a bearing plate arranged between the two vertical plates, the bearing plate is located below the circular table, two mounting plates are symmetrically arranged on the outer wall of the bearing plate along the length direction of the bearing plate, through holes located below the sliding grooves are formed in the mounting plates, a display plate is arranged between the inner walls of the two sides of the width direction of the through holes through auxiliary plates in sliding connection, paper stickers are detachably arranged at the upper ends of the display plates, and two connecting frames are symmetrically arranged between the upper ends of the auxiliary plates and the lower ends of the connecting blocks along the threaded rods.

Preferably, the upper end of the display board is an arc concave surface, the bottom of the marker pen slides and abuts against the upper end of the display board, the distance between the upper end of the display board and the axis of the pin shaft is equal to the distance between the lower end of the marker pen and the axis of the pin shaft, and the distance between the axis of the pin shaft and the lower end of the marker pen is equal to the radius of the arc concave surface at the upper end of the display board.

Preferably, the upper end of the pushing rod is provided with an inclined chamfer, one side of the inclined chamfer, which is far away from the axis of the circular table, is gradually inclined downwards, one side of the pushing rod, which is far away from the axis of the circular table, is an arc-shaped convex surface and is provided with an anti-skid pad, and the outer wall of the anti-skid pad is provided with a plurality of longitudinal grooves at equal intervals;

the upper end of the circular table is uniformly provided with a plurality of sector protection pads which are distributed in a ring shape, and the sector protection pads and the pushing rods are arranged in a staggered manner.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the invention, the bearing inner ring is conveniently supported and fixed in multiple directions by applying pushing force to the bearing inner ring through the plurality of pushing rods, so that the stability of the bearing in the dynamic balance test process is improved; the anti-slip pad can increase the transverse friction force between the pushing rod and the side wall of the bearing inner ring, and the pushing rod can further increase the friction force when abutting against the side wall of the bearing inner ring; therefore, the random rotation or up-and-down displacement of the inner ring of the bearing is avoided, and the detection precision is effectively improved; in addition, the pushing rod can internally support and fix bearing inner rings with different diameters, and further the dynamic balance test device can be used for carrying out dynamic balance test on bearings with different types.

2. According to the invention, through the cooperation between the arc-shaped bulge of the outer wall of the cam and the fixed seat of the inner side wall of the pushing rod, an external supporting force pointing to one side far away from the axis of the circular table can be applied to the upper half part of the pushing rod, so that the upper half part of the pushing rod is also in contact with the inner side wall of the bearing, and the stability of the inner ring of the bearing is further ensured.

3. According to the invention, the outer ring of the bearing is driven to rotate by the elastic belt so as to simulate whether the bearing vibrates under the action of centrifugal force in a high-speed rotation state, thereby being convenient for rapidly testing whether the dynamic balance of the bearing is qualified; in addition, the bearing outer ring is driven to rotate simultaneously through the two elastic belts, so that stability of the bearing in the testing process can be ensured, and the elastic belts can correspondingly deform along with vibration generated by the bearing, so that vibration generated by the bearing outer ring can not be reduced, and testing accuracy of the bearing is improved.

4. According to the invention, whether the dynamic balance of the bearing is qualified or not is detected through the vertical test plate which is abutted against the outer side wall of the bearing outer ring, and the vertical test plate can correspondingly swing according to the vibration of the bearing outer ring under the action of centrifugal force; even if the vibration amplitude of the bearing is smaller, the vertical test board is affected by the vibration and the marker pen is controlled to draw marks, so that the test precision can be improved; in addition, the vertical test board can be correspondingly adjusted according to the diameter of the outer ring of the bearing, so that dynamic balance tests can be conveniently carried out on bearings of different types.

5. The invention correspondingly swings along with the vertical test board through the square frame and drives the marker pen to reversely swing, the marker pen draws a swing track at the upper end of the sticker, and a dynamic balance test result of the bearing is drawn at the upper end of the sticker; and then a tester judges whether the dynamic balance of the bearing is qualified according to the test result of the upper end of the sticker, so that the test efficiency can be improved, and the operation is convenient.

Drawings

The invention will be further described with reference to the drawings and examples.

Fig. 1 is a schematic view of the structure between the present invention and a bearing.

Fig. 2 is a schematic structural diagram between the present inventions.

Fig. 3 is a schematic view of the structure between the support member and the driving member in the present invention.

Fig. 4 is a schematic view of the structure of the inner support member of the present invention.

Fig. 5 is a schematic view of the structure between the inner support member and the detection member of the present invention.

FIG. 6 is a schematic structural view of the detecting unit of the present invention.

Fig. 7 is an enlarged view of a portion of fig. 6a of the present invention.

FIG. 8 is a schematic view of the structure between the locating plate, connecting block and indicating assembly of the present invention.

In the figure, 1, a circular table; 11. a fan-shaped protective pad; 2. a support plate; 3. erecting a plate; 4. an inner support member; 5. a driving part; 6. a detection section; 7. a bearing;

41. pushing the rod; 411. an anti-slip pad; 42. a screw rod; 43. a driven bevel gear; 44. a first motor; 45. a drive bevel gear; 46. an anti-loosening component;

461. a spin column; 462. a cam; 463. a support column; 464. a fixing seat;

51. an elastic belt; 52. a rotating shaft; 53. a horizontal plate; 54. positioning a shaft; 55. a second motor;

61. a positioning plate; 611. a slip groove; 612. a threaded rod; 613. a telescopic rod; 62. a connecting block; 63. a stabilizing assembly; 64. a vertical test plate; 65. a marking component; 651. marking pen;

631. a return-type frame; 632. a fixing plate; 633. supporting a spring rod;

652. a bearing plate; 653. a mounting plate; 654. an auxiliary plate; 655. a display panel; 656. and a connecting frame.

Detailed Description

Embodiments of the invention are described in detail below with reference to fig. 1-8, but the invention can be implemented in a number of different ways, which are defined and covered by the claims.

The embodiment of the application discloses a bearing dynamic balance test auxiliary device, which is mainly applied to the process of carrying out dynamic balance test on bearings, can solve the problem of poor detection precision of the bearings 7 due to smaller vibration amplitude in the dynamic balance detection process, and can carry out dynamic balance test on the bearings 7 of different types; the inner ring of the bearing 7 is supported and fixed, and then the outer ring of the bearing 7 is rotated to simulate whether the bearing 7 vibrates under the action of centrifugal force in a high-speed rotation state, so that whether the dynamic balance of the bearing 7 is qualified or not can be conveniently and rapidly tested; furthermore, the auxiliary device for testing the dynamic balance of the bearing can also correspondingly mark according to vibration generated by the outer ring of the bearing 7, so that a tester can judge whether the dynamic balance of the bearing 7 is qualified according to the marking, and the testing efficiency can be improved.

Embodiment one:

referring to fig. 1, 2 and 3, an auxiliary device for dynamic balance test of bearings comprises a circular table 1 for placing bearings 7, two support plates 2 are symmetrically arranged on the outer wall of the circular table 1 along the axis of the circular table, an upright plate 3 is arranged at the lower end of each support plate 2, an inner support part 4 is arranged on a support bracket, each inner support part 4 comprises a plurality of pushing rods 41 which are uniformly distributed annularly along the circular table 1 and are slidingly connected to the circular table 1, a driving part 5 is arranged on each support plate 2, each driving part 5 comprises an elastic belt 51 for stirring the bearings 7 to rotate, and a detection part 6 is arranged below each inner support part 4.

In practical application, firstly, place bearing 7 in circular platform 1 upper end for bearing 7's interior snare is established in a plurality of pushing rods 41 outsides, and circular platform 1 upper end evenly installs a plurality of annular distributed fan-shaped protection pads 11, and fan-shaped protection pad 11 and pushing rods 41 staggered arrangement, consequently bearing 7 inner circle bottom supports and leans on fan-shaped protection pad 11 upper end, can protect bearing 7 through fan-shaped protection pad 11, avoids bearing 7 to receive the fish tail in the test process.

Then the inner supporting part 4 carries out inner supporting and fixing on the inner ring of the bearing 7 through the pushing rod 41, and then the driving part 5 stirs the outer ring of the bearing 7 through the elastic belt 51 so that the outer ring of the bearing 7 rotates; at this time, the dynamic balance of the bearing 7 in the rotating state is detected by the detecting means 6.

Referring to fig. 2, 3 and 4, because the inner ring and the outer ring of the bearing 7 need to rotate relatively when the bearing 7 performs dynamic balance test, namely, the inner ring and the outer ring of the bearing 7 need to be limited and fixed, so as to avoid synchronous rotation of the inner ring and the outer ring of the bearing 7 in the rotating process, based on the inner supporting component 4 for fixing the inner ring of the bearing 7, the inner supporting component further comprises a plurality of displacement holes which are formed on the circular table 1 and correspond to the positions of the pushing rods 41, the pushing rods 41 are slidingly connected in the displacement holes, a plurality of cylindrical grooves which are distributed annularly and correspond to the displacement holes are uniformly formed in the circular table 1, the cylindrical grooves are communicated with the displacement holes, and a lead screw 42 which penetrates the pushing rods 41 in a threaded connection manner is rotationally connected in the cylindrical grooves; the pushing rod 41 can be driven to slide along the displacement hole by rotating the screw rod 42, so that the position of the pushing rod 41 is adjusted according to the diameter of the inner ring of the bearing 7, the pushing rod 41 is abutted against the side wall of the inner ring of the bearing 7, and the inner support and fixation of the inner ring of the bearing 7 are realized.

Further, in this embodiment, a driven bevel gear 43 is sleeved on one side of the screw rod 42 near the axis of the circular table 1, a first motor 44 is provided at the lower end of the circular table 1 through a motor base, an output shaft of the first motor 44 extends into the circular table 1 and is sleeved with a driving bevel gear 45 engaged with the driven bevel gears 43, and a locking assembly 46 is further installed at the upper end of the circular table 1.

In the specific implementation process, after the bearing 7 is placed on the circular table 1, the first motor 44 is started, the first motor 44 drives the driving bevel gear 45 to rotate, the driving bevel gear 45 drives the driven bevel gears 43 to synchronously rotate, and the driven bevel gears 43 drive the pushing rod 41 to move along the displacement hole to one side far from the axis of the circular table 1 through the lead screw 42 and abut against the side wall of the inner ring of the bearing 7; therefore, the pushing force is applied to the inner ring of the bearing 7 through the pushing rods 41 at the same time, so that the inner ring of the bearing 7 is supported and fixed in multiple directions, and the stability of the bearing 7 in the dynamic balance test process is improved.

In addition, in the embodiment, since the pushing rod 41 can slide reciprocally along the displacement hole, the pushing rod 41 can support and fix the inner rings of the bearings 7 with different diameters, and thus the invention can perform dynamic balance test on the bearings 7 with different types.

After the bearing 7 is tested, the first motor 44 drives the drive bevel gear 45 to reversely rotate, the drive bevel gear 45 drives the lead screw 42 to reversely rotate through the driven bevel gear 43, and the lead screw 42 drives the push rod 41 to move along the displacement hole to one side close to the axis of the circular table 1, so that the support and fixation of the inner ring of the bearing 7 are relieved; and then the bearing 7 after the test is removed.

In addition, since the inner ring side wall of the bearing 7 is smooth, the bearing is easy to rotate relative to the pushing rod 41 during dynamic balance test, and the normal test of the bearing 7 is further affected; in order to solve the problem, the inclined chamfer is formed in the upper end of the pushing rod 41, one side, away from the axis of the circular table 1, of the inclined chamfer is gradually inclined downwards, one side, away from the axis of the circular table 1, of the pushing rod 41 is an arc-shaped convex surface and is provided with the anti-skid pad 411, and a plurality of longitudinal grooves are formed in the outer wall of the anti-skid pad 411 at equal intervals.

The inner ring of the bearing 7 is conveniently guided through the inclined chamfer, so that the bearing 7 can be smoothly sleeved outside the plurality of pushing rods 41; the transverse friction force between the pushing rod 41 and the inner ring side wall of the bearing 7 can be increased through the anti-slip pad 411, and the friction force can be further increased when the pushing rod 41 is propped against the inner ring side wall of the bearing 7, so that the inner ring of the bearing 7 is prevented from rotating randomly or being displaced up and down, the stability of the bearing 7 in the dynamic balance test process is improved, and the detection precision is effectively improved.

With continued reference to fig. 3 and 4, the locking assembly 46 includes a rotary column 461, the upper end of the circular table 1 is rotatably connected with the rotary column 461, the output shaft of the first motor 44 is connected with the lower end of the rotary column 461, a cam 462 is sleeved on the outer wall of the rotary column 461, a plurality of arc-shaped protrusions distributed in a ring shape are uniformly arranged on the outer wall of the cam 462, an annular groove is formed in the lower end of the cam 462, a plurality of support columns 463 distributed in a ring shape are uniformly arranged at the upper end of the circular table 1, the upper end of the support column 463 is rotatably connected inside the annular groove, and a fixing seat 464 which is in sliding contact with the arc-shaped protrusions is arranged on one side, close to the cam 462, of the pushing rod 41.

In the specific implementation process, the first motor 44 drives the drive bevel gear 45 to rotate and simultaneously drives the cam 462 to rotate through the rotary column 461, and the cam 462 drives the arc-shaped protrusions on the outer wall of the cam 462 to synchronously rotate; so that the outer supporting force pointing to one side far away from the axis of the circular table 1 can be applied to the upper half part of the pushing rod 41 through the cooperation between the arc-shaped bulge and the fixed seat 464, so that the upper half part of the pushing rod 41 also abuts against the side wall of the inner ring of the bearing 7, thereby further ensuring the stability of the inner ring of the bearing 7; it should be noted that, when the pushing rod 41 moves along the displacement hole, the outer wall of the cam 462 always slides and contacts with the inner wall of the pushing rod 41, so that the cam 462 always provides an external supporting force to the pushing rod 41 to ensure that the pushing rod 41 is always in a vertical state.

In addition, the supporting force can be applied to the cam 462 through the cooperation between the supporting column 463 and the annular groove, so that the balance of the cam 462 is ensured, and the situation that the cam 462 is inclined and cannot collide with the inner side wall of the pushing rod 41, so that the upper half part of the pushing rod 41 cannot obtain the external supporting force is avoided, and the cam 462 is always in a horizontal state.

Referring to fig. 3, the dynamic balance of the bearing 7 is tested by relatively rotating the inner ring of the bearing 7 and the outer ring thereof, and the inner ring of the bearing 7 is fixed, so that the outer ring of the bearing 7 is required to rotate; based on this, this application provides a drive unit 5 for slewing bearing 7 outer lane, specifically, drive unit 5 still includes pivot 52, backup pad 2 upper end is connected with two pivots 52 along its width direction symmetry rotation, same backup pad 2 upper end and lie in and rotate between two pivots 52 and be provided with the take-up shaft, overlap jointly between two pivots 52 and the take-up shaft and be equipped with elastic belt 51, elastic belt 51 outer wall equidistant is provided with a plurality of vertical antislip strips, horizontal plate 53 is all installed to the same side of two backup pads 2, rotate on the horizontal plate 53 and be connected with location axle 54, be connected through belt drive between location axle 54 and its adjacent pivot 52, be connected through belt drive between two location axles 54, the second motor 55 that is connected with location axle 54 is installed through the motor cover to arbitrary horizontal plate 53 lower extreme.

It should be noted that, the elastic belt 51 always has an elastic shrinkage force under its own elastic action, so that the elastic belt 51 is in a straightened state in the initial state; when the bearing 7 is mounted on the circular table 1, the outer ring of the bearing 7 abuts against the elastic belt 51 and supports the elastic belt 51, and at this time, the elastic belt 51 has an arc-shaped structure corresponding to the outer ring of the bearing 7.

In the specific implementation process, after the bearing 7 is fixed, the outer side wall of the outer ring of the bearing is abutted against the elastic belt 51, and at the moment, the elastic belt 51 bends under the self elastic action; then, the second motor 55 is started, the second motor 55 drives the rotating shaft 52 and the elastic belt 51 to rotate through the positioning shaft 54, and the elastic belt 51 drives the outer ring of the bearing 7 to rotate, so that whether the bearing 7 vibrates under the action of centrifugal force in a high-speed rotating state is simulated, and whether the dynamic balance of the bearing 7 is qualified or not is conveniently and rapidly tested; during the process, the elastic belt 51 can increase the transverse friction force between the elastic belt 51 and the side wall of the outer ring of the bearing 7 through the longitudinal anti-slip strips of the outer wall of the elastic belt, so that the relative rotation between the elastic belt 51 and the outer ring of the bearing 7 is avoided, and the outer ring of the bearing 7 cannot be driven to synchronously rotate.

Because the elastic belts 51 are arranged on the two support plates 2, the two elastic belts 51 simultaneously drive the outer ring of the bearing 7 to rotate, so that the stability of the bearing 7 in the testing process can be ensured, the elastic belts 51 have elasticity, and when the outer ring of the bearing 7 vibrates under the action of centrifugal force, the elastic belts 51 correspondingly deform, so that the vibration of the outer ring of the bearing 7 is not reduced, and the testing accuracy of the bearing 7 is improved.

In this embodiment, since the tensioning shaft is provided, there is a certain distance between the elastic belts 51 on both sides of the rotating shaft 52, and even if the elastic belts 51 are bent on the side close to the bearing 7, the elastic belts 51 on both sides of the rotating shaft 52 are not contacted with each other, thereby improving the smoothness of the rotation process of the elastic belts 51.

Referring to fig. 2, fig. 5 and fig. 6, for the more accurate dynamic balance of detection bearing 7 of being convenient for, the application provides corresponding detection component 6, it includes locating plate 61, two arbitrary relative push rod 41 lower extreme is provided with locating plate 61 on the circular table 1, locating plate 61 and backup pad 2 staggered arrangement, install connecting block 62 on the locating plate 61, the inside stable subassembly 63 that is provided with of connecting block 62, the vertical test board 64 is installed to stable subassembly 63 upper end, stable subassembly 63 lower extreme is provided with marks subassembly 65, mark subassembly 65 including the marker 651 that is used for drawing bearing 7 outer lane vibrations range.

In the specific implementation process, after the fixing of the bearing 7 is completed, the connecting block 62 drives the vertical test plate 64 to be abutted against the outer side wall of the outer ring of the bearing 7; then the driving part 5 drives the outer ring of the bearing 7 to rotate, if the dynamic balance of the bearing 7 is qualified, the outer ring of the bearing 7 will not vibrate under the action of centrifugal force in the rotation process, so the vertical test board 64 will not swing.

On the contrary, if the dynamic balance of the bearing 7 is not qualified, the outer ring of the bearing 7 will vibrate under the action of centrifugal force in the rotation process, so the vertical test plate 64 will swing accordingly, and the swing amplitude of the vertical test plate 64 is in direct proportion to the vibration amplitude of the outer ring of the bearing 7; at the same time, the vertical test board 64 draws marks at the marking assembly 65 through the marker 651, so that a tester can visually see whether the dynamic balance of the bearing 7 is acceptable.

Whether vibrations occur to the bearing 7 can be more accurately tested through the vertical test plate 64, and since the vertical test plate 64 is always attached to the outer side wall of the outer ring of the bearing 7, even if the vibration amplitude of the bearing 7 is small, the vertical test plate 64 is affected by the vibrations and the marker 651 is controlled to draw marks, so that the test accuracy can be improved.

It should be noted that, since the outer side walls of the vertical test plate 64 and the outer ring of the bearing 7 are smooth surfaces and are tangential, the friction force between the vertical test plate 64 and the outer side wall of the outer ring of the bearing 7 is small, so that the vertical test plate 64 does not scratch the outer ring of the bearing 7.

With continued reference to fig. 6, further, since the diameters of the outer rings of the bearings 7 are different in different types, the vertical test plate 64 needs to be correspondingly displaced according to the diameter of the outer ring of the bearing 7, so as to ensure that the vertical test plate 64 can be abutted against the outer side wall of the outer ring of the bearing 7; in this embodiment, a sliding groove 611 is formed on the positioning plate 61, the connecting block 62 is slidably connected in the sliding groove 611, the inside of the positioning plate 61 is rotatably connected with a threaded rod 612, the threads on the outer walls of the threaded rods 612 inside the two positioning plates 61 are opposite in rotation direction, the threaded rod 612 passes through the connecting block 62 in a threaded connection manner, and a telescopic rod 613 is installed between the two threaded rods 612; the adjacent two telescopic ends of the telescopic rod 613 can only slide relatively and cannot rotate relatively; two threaded rods 612 and a telescopic rod 613 with opposite rotation directions are formed between the two threaded rods for driving the connecting block 62 to move relatively or move oppositely.

In the specific implementation process, any one of the threaded rods 612 is rotated, the threaded rod 612 drives the other threaded rod 612 to synchronously rotate through the telescopic rod 613, the threaded rod 612 drives the two connecting blocks 62 to relatively move or oppositely move along the sliding groove 611 while rotating, and the connecting blocks 62 drive the vertical test plate 64 to synchronously move, so that the vertical test plate 64 is abutted against the outer side wall of the outer ring of the bearing 7; accordingly, the vertical test plate 64 is correspondingly adjusted according to the diameter of the outer ring of the bearing 7, so that dynamic balance tests can be conveniently carried out on the bearings 7 of different types.

It should be noted that, the threaded rod 612 adopted in the present application is a self-locking threaded rod 612, that is, the threaded rod 612 can be automatically locked after rotating by a certain angle, so that the positions of the connecting block 62 and the vertical test plate 64 can be locked, and the situation that the connecting block 62 is randomly moved to affect the leaning state between the vertical test plate 64 and the outer ring of the bearing 7 due to random rotation of the threaded rod 612 is avoided.

Referring to fig. 7, since the vertical test plate 64 swings accordingly with the vibration of the outer race of the bearing 7, the vertical test plate 64 after swinging is in an inclined state, in order to ensure that the vertical test plate 64 can be restored to a vertical state after swinging, the present application provides a stabilizing assembly 63 for rebound of the vertical test plate 64; the device comprises a return type frame 631, two linkage holes are symmetrically formed in a connecting block 62 along a threaded rod 612, the return type frame 631 is connected in the two linkage holes in a common rotating mode, a pin shaft which rotates to pass through the return type frame 631 is arranged in the middle of the linkage hole, a vertical test plate 64 is arranged at the upper end of the return type frame 631, two fixing plates 632 are symmetrically arranged at each linkage hole of the upper end of the connecting block 62 along the return type frame 631, and a supporting spring rod 633 is hinged between each fixing plate 632 and the return type frame 631.

In practical application, the supporting spring rods 633 always apply pushing force to the mold returning frame 631, and the mold returning frame 631 is in a vertical state in the initial state because the pushing forces received by the two sides of the mold returning frame 631 are equal, and the vertical test plate 64 is also in a vertical state at this time; when the vertical test plate 64 swings due to vibration of the outer ring of the bearing 7, the mold returning frame 631 is inclined accordingly, and then the mold returning frame 631 is restored to the original state under the action of the supporting spring lever 633, and at this time, the vertical test plate 64 is also restored to the vertical state and is abutted against the outer side wall of the outer ring of the bearing 7, thereby ensuring that the vertical test plate 64 is always abutted against the outer ring of the bearing 7.

Embodiment two:

referring to fig. 6 and 8, in order to facilitate a tester to more intuitively observe the dynamic balance test result of the bearing 7, the present application provides a marking assembly 65 for marking a mark by the marker 651; specifically, the marking assembly 65 further comprises a support plate 652 mounted between the two vertical plates 3, the support plate 652 is located below the circular table 1, two mounting plates 653 are symmetrically arranged on the outer wall of the support plate 652 along the length direction of the support plate, through holes located below the sliding grooves 611 are formed in the mounting plates 653, display plates 655 are mounted between the inner walls of the two sides in the width direction of the through holes through auxiliary plates 654 in sliding connection, paper stickers are detachably arranged at the upper ends of the display plates 655, and two connecting frames 656 are symmetrically arranged between the upper ends of the auxiliary plates 654 and the lower ends of the connecting blocks 62 along the threaded rods 612.

Further, in the embodiment, the upper end of the display board 655 is an arc concave surface, the bottom of the marker 651 slides against the upper end of the display board 655, the distance between the upper end of the display board 655 and the axis of the pin shaft is equal to the distance between the lower end of the marker 651 and the axis of the pin shaft, and the distance between the axis of the pin shaft and the lower end of the marker 651 is equal to the radius of the arc concave surface at the upper end of the display board 655.

Note that, the marker 651 is abutted against the center of the upper end of the sticker in the initial state; in addition, when the connecting block 62 and the vertical test board 64 are adjusted according to the diameter of the outer ring of the bearing 7, the connecting block 62 drives the marker 651, the connecting frame 656 and the display board 655 to integrally move, so that the relative position between the marker 651 and the display board 655 is ensured not to change.

In the specific implementation process, when the vertical test board 64 swings, the marking pen 651 is driven by the return bracket 631 to reversely swing, and the marking pen 651 draws a swing track at the upper end of the sticker, so that a dynamic balance test result of the bearing 7 is drawn at the upper end of the sticker; then a tester judges whether the dynamic balance of the bearing 7 is qualified according to the test result of the upper end of the sticker, so that the test efficiency can be improved, and the operation is convenient; since the upper end of the decal is marked with the test result of the bearings 7, the decal needs to be replaced once after each bearing 7 is tested.

When in operation, the device comprises: the first step: firstly, placing a bearing 7 at the upper end of a circular table 1, sleeving an inner ring of the bearing 7 outside a plurality of pushing rods 41, then driving a driving bevel gear 45 to rotate through a first motor 44, driving the driving bevel gear 45 to drive a plurality of driven bevel gears 43 to synchronously rotate, driving the pushing rods 41 to move along a displacement hole to one side far away from the axis of the circular table 1 through a lead screw 42 by the driven bevel gears 43, abutting against the side wall of the inner ring of the bearing 7, and applying pushing force to the inner ring of the bearing 7, so that multidirectional supporting and fixing of the inner ring of the bearing 7 are realized, and at the moment, the first motor 44 pauses working; at this time, the outer side wall of the outer race of the bearing 7 contacts the elastic belt 51, and at this time, the elastic belt 51 bends under its own elastic action.

And a second step of: the first motor 44 drives the drive bevel gear 45 to rotate and simultaneously drives the cam 462 to rotate through the rotary column 461, and the cam 462 drives the arc-shaped protrusions on the outer wall of the cam to synchronously rotate; so that the outer supporting force pointing to the side far away from the axis of the circular table 1 can be applied to the upper half of the pushing rod 41 through the cooperation between the arc-shaped protrusion and the fixed seat 464, so that the upper half of the pushing rod 41 also collides with the inner ring side wall of the bearing 7, thereby further ensuring the stability of the inner ring of the bearing 7.

And a third step of: and any one of the threaded rods 612 is rotated, the threaded rod 612 drives the other threaded rod 612 to synchronously rotate through the telescopic rod 613, the threaded rod 612 drives the two connecting blocks 62 to relatively move or oppositely move along the sliding groove 611 while rotating, and the connecting blocks 62 drive the vertical test plate 64 to synchronously move, so that the vertical test plate 64 is abutted against the outer side wall of the outer ring of the bearing 7.

Fourth step: the second motor 55 is started, the second motor 55 drives the rotating shaft 52 and the elastic belt 51 to rotate through the positioning shaft 54, and the elastic belt 51 drives the outer ring of the bearing 7 to rotate, so that whether the bearing 7 vibrates under the action of centrifugal force in a high-speed rotating state is simulated, and whether the dynamic balance of the bearing 7 is qualified is conveniently and rapidly detected.

Because the elastic belts 51 are arranged on the two support plates 2, the two elastic belts 51 simultaneously drive the outer ring of the bearing 7 to rotate, so that the stability of the bearing 7 in the testing process can be ensured, the elastic belts 51 have elasticity, and when the outer ring of the bearing 7 vibrates under the action of centrifugal force, the elastic belts 51 correspondingly deform, so that the vibration of the outer ring of the bearing 7 cannot be reduced, and the testing accuracy of the bearing 7 is improved.

Fifth step: if the dynamic balance of the bearing 7 is qualified, the outer ring of the bearing 7 will not vibrate under the action of centrifugal force in the rotation process, so the vertical test plate 64 will not swing; on the contrary, if the dynamic balance of the bearing 7 is not qualified, the outer ring of the bearing 7 will vibrate under the action of centrifugal force during the rotation process, so the vertical test plate 64 will swing accordingly, and the swing amplitude of the vertical test plate 64 is proportional to the vibration amplitude of the outer ring of the bearing 7.

Meanwhile, when the vertical test board 64 swings, the marking pen 651 is driven by the return bracket 631 to reversely swing, the marking pen 651 draws a swing track at the upper end of the sticker, and accordingly a dynamic balance test result of the bearing 7 is drawn at the upper end of the sticker; then a tester judges whether the dynamic balance of the bearing 7 is qualified or not according to the test result of the upper end of the sticker; since the upper end of the decal is marked with the test result of the bearings 7, the decal needs to be replaced once after each bearing 7 is tested.

Sixth step: after the bearing 7 is tested, the second motor 55 is turned off, the elastic belt 51 stops rotating, then the first motor 44 drives the drive bevel gear 45 to reversely rotate, the drive bevel gear 45 drives the screw rod 42 to reversely rotate through the driven bevel gear 43, and the screw rod 42 drives the pushing rod 41 to move to one side close to the axis of the circular table 1 along the displacement hole, so that the supporting and fixing of the inner ring of the bearing 7 are relieved; and then the bearing 7 after the test is removed.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a bearing dynamic balance test auxiliary device, is including being used for placing circular platform (1) of bearing (7), circular platform (1) outer wall is provided with two backup pad (2) along its axis symmetry, and upright board (3), its characterized in that are installed to backup pad (2) lower extreme: be provided with interior supporting part (4) on the support bracket, interior supporting part (4) are including a plurality of push rod (41) on circular platform (1) of evenly annular distribution and sliding connection along circular platform (1), install drive part (5) on backup pad (2), and drive part (5) are including being used for stirring bearing (7) pivoted elastic belt (51), and detection part (6) are installed to interior supporting part (4) below, wherein:

the detection component (6) comprises a positioning plate (61), the lower ends of two pushing rods (41) which are arbitrarily opposite on the circular table (1) are provided with the positioning plate (61), the positioning plate (61) and the supporting plate (2) are arranged in a staggered mode, a connecting block (62) is arranged on the positioning plate (61), a stabilizing component (63) is arranged inside the connecting block (62), a vertical test plate (64) is arranged at the upper end of the stabilizing component (63), a marking component (65) is arranged at the lower end of the stabilizing component (63), and the marking component (65) comprises a marking pen (651) used for drawing the vibration amplitude of an outer ring of the bearing (7).

2. The bearing dynamic balance test auxiliary device according to claim 1, wherein: the inner supporting component (4) further comprises a plurality of displacement holes which are formed in the circular table (1) and correspond to the positions of the pushing rods (41), the pushing rods (41) are connected in the displacement holes in a sliding mode, a plurality of cylindrical grooves which are distributed in a ring mode and correspond to the displacement holes are uniformly formed in the circular table (1), the cylindrical grooves are communicated with the displacement holes, and a screw rod (42) penetrating through the pushing rods (41) in a threaded connection mode is connected in the cylindrical grooves in a rotating mode;

one side cover that lead screw (42) is close to circular platform (1) axis is equipped with driven bevel gear (43), and circular platform (1) lower extreme is provided with first motor (44) through the motor cabinet, and the output shaft of first motor (44) extends to circular platform (1) inside and overlaps and be equipped with a plurality of driven bevel gear (43) homoenergetic meshing's drive bevel gear (45), and locking subassembly (46) are still installed to circular platform (1) upper end.

3. The bearing dynamic balance test auxiliary device according to claim 2, wherein: the anti-loosening assembly (46) comprises a rotating column (461), the upper end of a circular table (1) is rotationally connected with the rotating column (461), an output shaft of a first motor (44) is connected with the lower end of the rotating column (461), a cam (462) is sleeved on the outer wall of the rotating column (461), a plurality of annular distributed arc-shaped protrusions are uniformly arranged on the outer wall of the cam (462), an annular groove is formed in the lower end of the cam (462), a plurality of annular distributed support columns (463) are uniformly arranged at the upper end of the circular table (1), the upper end of the support column (463) is rotationally connected inside the annular groove, and a fixed seat (464) which is in sliding interference with the arc-shaped protrusions is arranged on one side, close to the cam (462), of the pushing rod (41).

4. The bearing dynamic balance test auxiliary device according to claim 1, wherein: the driving part (5) further comprises a rotating shaft (52), the upper ends of the supporting plates (2) are symmetrically connected with two rotating shafts (52) in a rotating mode along the width direction of the supporting plates, tensioning shafts are rotatably arranged between the two rotating shafts (52) at the upper ends of the same supporting plates (2), elastic belts (51) are sleeved between the two rotating shafts (52) and the tensioning shafts in a sleeved mode, a plurality of longitudinal anti-slip strips are arranged on the outer walls of the elastic belts (51) at equal intervals, horizontal plates (53) are installed on the same sides of the two supporting plates (2), positioning shafts (54) are rotatably connected to the same sides of the two supporting plates (2), the positioning shafts (54) are connected with the adjacent rotating shafts (52) through belt transmission, two positioning shafts (54) are connected through belt transmission, and a second motor (55) connected with the positioning shafts (54) is installed at the lower ends of any one horizontal plate (53) through a motor cover.

5. The bearing dynamic balance test auxiliary device according to claim 1, wherein: the positioning plates (61) are provided with sliding grooves (611), the connecting blocks (62) are slidably connected in the sliding grooves (611), threaded rods (612) are rotatably connected in the positioning plates (61), the threads on the outer walls of the threaded rods (612) in the two positioning plates (61) are opposite in rotation direction, the threaded rods (612) penetrate through the connecting blocks (62) in a threaded connection mode, and telescopic rods (613) are arranged between the two threaded rods (612);

two threaded rods (612) with opposite rotation directions and a telescopic rod (613) are formed between the two threaded rods, and the two threaded rods are used for driving the connecting block (62) to move relatively or move oppositely.

6. The bearing dynamic balance test auxiliary device according to claim 5, wherein: the stabilizing component (63) comprises a return-type frame (631), two linkage holes are symmetrically formed in the connecting block (62) along the threaded rod (612), the return-type frame (631) is connected to the two linkage holes in a rotating mode, a pin shaft penetrating through the return-type frame (631) in a rotating mode is arranged in the middle of the linkage hole, a vertical test plate (64) is arranged at the upper end of the return-type frame (631), two fixing plates (632) are symmetrically arranged at each linkage hole of the upper end of the connecting block (62) along the return-type frame (631), and a supporting spring rod (633) is hinged between the fixing plates (632) and the return-type frame (631).

7. The bearing dynamic balance test auxiliary device according to claim 5, wherein: the utility model discloses a marking assembly (65), including setting up support board (652) between board (3) are erect to the demonstration, support board (652) are located circular platform (1) below, support board (652) outer wall is provided with two mounting panel (653) along its length direction symmetry, set up the through-hole that is located sliding groove (611) below on mounting panel (653), install display panel (655) through sliding connection's accessory plate (654) between the both sides inner wall of through-hole width direction, display panel (655) upper end detachable is provided with the sticker, be provided with two link (656) along threaded rod (612) symmetry between accessory plate (654) upper end and connecting block (62) lower extreme.

8. The bearing dynamic balance test auxiliary device according to claim 7, wherein: the upper end of the display board (655) is an arc concave surface, the bottom of the marker pen (651) slides and abuts against the upper end of the display board (655), the distance between the upper end of the display board (655) and the axis of the pin shaft is equal to the distance between the lower end of the marker pen (651) and the axis of the pin shaft, and the distance between the axis of the pin shaft and the lower end of the marker pen (651) is equal to the radius of the arc concave surface at the upper end of the display board (655).

9. The bearing dynamic balance test auxiliary device according to claim 2, wherein: the upper end of the pushing rod (41) is provided with an inclined chamfer, one side of the inclined chamfer, which is far away from the axis of the circular table (1), is gradually inclined downwards, one side of the pushing rod (41), which is far away from the axis of the circular table (1), is an arc-shaped convex surface and is provided with an anti-skid pad (411), and a plurality of longitudinal grooves are formed in the outer wall of the anti-skid pad (411) at equal intervals;

the upper end of the circular table (1) is uniformly provided with a plurality of sector protection pads (11) which are distributed in a ring shape, and the sector protection pads (11) and the pushing rods (41) are arranged in a staggered manner.