CN117723283B - Slewing bearing life-span check out test set - Google Patents

Abstract

The invention relates to the technical field of slewing bearing detection, and in particular provides slewing bearing service life detection equipment, which comprises the following components: the device comprises a base, a clamping mechanism and a pressurizing rotating mechanism. According to the slewing bearing service life detection equipment designed by the invention, the slewing bearing can be rapidly positioned through the two positioning rods, then the outer ring is clamped and fixed through the arc clamping plate in the clamping mechanism, and the up-and-down movement of the outer ring is limited through the fork frame, so that the outer ring is subjected to multiple and multi-directional positioning, the stability and convenience of the outer ring fixation are improved, the influence on the detection result caused by the movement of the outer ring in the slewing bearing service life detection process is avoided, and the axial pressure applied by the pressurizing rotating mechanism can be rapidly adjusted when the pressurizing rotating mechanism drives the inner ring to rotate for service life detection, so that the performance and service life of the slewing bearing under different load conditions are evaluated, and the bearing capacity range of the supporting is helped to be determined.

Description

Slewing bearing life-span check out test set

Technical Field

The invention relates to the technical field of slewing bearing detection, and particularly provides slewing bearing service life detection equipment.

Background

Slewing bearing is an important component for rotating equipment, which is used to support the rotating motion and to bear the weight and load from the rotating equipment. The slewing bearing is generally composed of an inner ring and an outer ring, wherein the inner ring is connected to a rotating part of the apparatus, the outer ring is fixed to a bracket, and balls, rollers or other similar moving elements are generally filled between the inner ring and the outer ring (as shown in fig. 3) to support and smoothly drive the rotational movement of the apparatus.

The slewing bearing is used for detecting the service life, so that the safe and reliable operation of equipment is facilitated, the risk of unexpected faults is reduced, but when the slewing bearing is used for detecting the service life, the outer ring is fixed, the inner ring rotates, and therefore a plurality of driving sources are needed for fixing the outer ring and the inner ring and driving the inner ring to rotate, so that the problems of complicated service life detection and higher cost of the slewing bearing are caused, and when the slewing bearing is used for detecting the service life, the inner ring rotates at a high speed in the detection process, so that the axial pressure applied to the inner ring is difficult to adjust and change, and the service life detection range of the slewing bearing is shortened.

Disclosure of Invention

In view of the foregoing, embodiments of the present application provide a slewing bearing life detection device to solve the foregoing technical problems.

In order to achieve the above object, the embodiment of the present application provides the following technical solutions: a slewing bearing life detection apparatus comprising: the base, the mounting groove has been seted up at the top of base, has seted up the H type groove with the mounting groove intercommunication on the base, and fixed mounting has on the mounting groove and has accepted the ring, has placed slewing bearing on accepting the ring, and slewing bearing comprises a plurality of balls of inner ring and outer loop and rolling connection between the two, has all seted up the connecting hole of evenly arranging on inner ring and the outer loop, accepts and installs the card solid mechanism that carries out the fixation to the outer loop jointly between ring and the base.

The top of the base is provided with an inverted L-shaped supporting frame, and the horizontal section of the supporting frame is connected with a pressurizing and rotating mechanism which applies axial pressure to the inner ring and drives the inner ring to rotate.

The clamping mechanism comprises two arc clamping plates arranged on a base, a clamping driving group for driving the two arc clamping plates to move, and two positioning rods fixedly connected to the top of a bearing ring and symmetrically arranged, wherein a supporting frame is arranged between the two positioning rods, a plurality of limiting rods which are uniformly distributed along the circumferential direction of the bearing ring are arranged at the top of the bearing ring, the top of each positioning rod is higher than the top of each limiting rod, a plurality of fork frames which are uniformly distributed are connected to the top of each arc clamping plate through fixing blocks, and each fork frame is Y-shaped and the corresponding fork frame inner wall is provided with the corresponding limiting rod and the corresponding positioning rod in a abutting mode.

The pressurizing rotating mechanism comprises a ring-shaped retaining plate and a receiving barrel connected to the lower end of the ring-shaped retaining plate, wherein a plurality of inserting rods which are uniformly distributed along the circumferential direction of the ring-shaped retaining plate are arranged at the lower end of the ring-shaped retaining plate, a rotating disc is connected in the receiving barrel, three guide rods which are uniformly distributed along the circumferential direction of the rotating disc are arranged at the top of the rotating disc, the top of each guide rod penetrates through a supporting frame in a sliding manner, a plurality of pressurizing gravity blocks which are sequentially distributed from top to bottom are sleeved on the guide rods in a sliding manner, the pressurizing gravity blocks are located below the horizontal section of the supporting frame, pressure regulating groups which are used for limiting the pressurizing gravity blocks are arranged on the horizontal section of the supporting frame, guide groups are arranged on two sides of the horizontal section of the supporting frame which are distributed along the width direction of the horizontal section of the supporting frame, two ropes are connected between the ring-shaped retaining plate and the arc-shaped clamping plate, the corresponding guide groups are wound around the guide groups, and a rotating driving group which is used for limiting the guide rods and driving the inner ring is driven by the H-shaped groove.

In a possible implementation mode, the pressure regulating group is including rotating the regulation pole of connection on the support frame horizontal segment, install the spacing dish after the top of regulation pole runs through the support frame, two spacing bars are installed to the lateral wall of spacing dish, two spacing bars are arranged perpendicularly, two holding tanks along its circumference symmetrical arrangement are seted up to the lower extreme lateral wall of regulation pole, be connected with the accepting piece through torsion spring pole rotation in the holding tank, the through groove has been seted up at the middle part of pressurization gravity piece, the alignment groove along its circumference symmetrical arrangement and link up from top to bottom has been seted up to the lateral wall of through groove, symmetrical groove on two adjacent pressurization gravity pieces is crisscross to be arranged from top to bottom, the buffer rubber circle along its circumference evenly arranges and the cover is established on corresponding guide bar is installed to the lower extreme of pressurization gravity piece, it is spacing to a plurality of pressurization gravity pieces through the accepting piece after all through the through groove to adjust the pole.

In a possible implementation mode, the clamping driving set comprises two rotary gears respectively connected in two transverse sections of the H-shaped groove in a rotating mode, two symmetrically arranged connecting rods are installed on the arc-shaped clamping plates, the lower ends of the connecting rods penetrate into the H-shaped groove after penetrating through the base in a sliding mode, two sides of each rotary gear are connected with racks which are connected with the H-shaped groove in a sliding mode and are meshed with the rotary gears in a transmission mode, two racks on two sides of the same rotary gear are respectively connected with corresponding connecting rods on the two arc-shaped clamping plates, a pushing frame is connected with the top of the base in a sliding mode, and the pushing frame is connected with one arc-shaped clamping plate.

In a possible implementation mode, the rotary driving group comprises an arc-shaped groove which is formed in the base and communicated with the H-shaped groove, a driving shaft is rotationally connected in the arc-shaped groove, a driving gear is fixedly sleeved on the driving shaft, the middle part of the H-shaped groove is rotationally connected with a splicing cylinder concentric with the receiving ring through a fixing seat, the outer side wall of the splicing cylinder is fixedly sleeved with a gear ring which is meshed with the driving gear, a clamping groove is formed in the inner wall of the splicing cylinder, a spring groove is formed in the side wall of the receiving cylinder, a movable clamping block is connected in a sliding manner in the spring groove, the movable clamping block is connected with the spring groove through a reset spring, the lower end of one side of the movable clamping block, which extends out of the spring groove, is inclined, and the top of the inner wall of the splicing cylinder is arc-shaped.

In one possible implementation mode, the guide group comprises an ear plate fixedly connected to the side wall of the horizontal section of the support frame, guide wheels are rotatably connected to two sides of the ear plate, two ropes respectively bypass the two guide wheels, and a limiting cover for limiting the ropes is arranged on the support frame.

In one possible implementation mode, the lubrication group comprises a containing box which is connected to the arc-shaped clamping plate through a fixing frame and is in an arc-shaped cavity shape, a plurality of oil nozzles which are communicated with the containing box and are uniformly distributed along the containing box are arranged at the bottom of the containing box, the oil nozzles are located at gaps between the inner ring and the outer ring, an oil inlet pipe which is communicated with the containing box is arranged at the top of the containing box, and the oil nozzles, the limiting rods and the positioning rods are distributed in a staggered mode, and the lower end of the containing box is located above the upper end of the positioning rods.

In one possible implementation mode, the locking group comprises three locking rods which are rotationally connected to the top of the supporting frame in a threaded fit mode, the locking rods are in one-to-one correspondence with the guide rods, and the side walls of the locking rods are provided with limiting pressing plates.

In one possible implementation manner, the top parts of the limiting rod and the positioning rod and the bottom part of the inserted rod are in rolling connection with balls.

The above technical solutions in the embodiments of the present invention have at least one of the following beneficial effects: 1. according to the slewing bearing service life detection equipment designed by the invention, the slewing bearing can be rapidly positioned through the two positioning rods, then the outer ring is clamped and fixed through the arc clamping plate in the clamping mechanism, and the up-and-down movement of the outer ring is limited through the fork frame, so that the outer ring is subjected to multiple and multi-directional positioning, the stability and convenience of the outer ring fixation are improved, the influence on the detection result caused by the movement of the outer ring in the slewing bearing service life detection process is avoided, and the axial pressure applied by the pressurizing rotating mechanism can be rapidly adjusted when the pressurizing rotating mechanism drives the inner ring to rotate for service life detection, so that the performance and service life of the slewing bearing under different load conditions are evaluated, and the bearing capacity range of the supporting is helped to be determined.

2. The arc-shaped clamping plate moves and drives the annular retaining plate and the receiving barrel in the pressurizing rotating mechanism to move downwards, so that the inner ring and the outer ring of the slewing bearing can be limited at the same time, a driving source is reduced, the cost is saved, and the clamping and fixing efficiency of the inner ring and the outer ring is improved.

3. When the pressure adjusting group is used for adjusting the applied axial pressure, the addition of the pressurizing gravity block can be realized only by rotating the adjusting rod by 90 degrees, and when the receiving barrel moves upwards after detection is finished, the pressurizing gravity block is extruded to rotate and can be sleeved on the adjusting rod rapidly, so that the pressurizing gravity block can be reset rapidly, and the convenience of adjusting the applied axial pressure during the detection of the service life of the slewing bearing is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic overall perspective view of the present invention.

Fig. 2 is a partial cross-sectional view of fig. 1 of the present invention.

Fig. 3 is a schematic structural view of the slewing bearing.

Fig. 4 is a schematic view of the structure of the annular retaining plate, the receiving barrel and the plunger of the present invention (balls attached to the plunger are not shown).

Fig. 5 is a schematic perspective view of the pressure adjusting set, the locking set and the guiding set according to the present invention.

Fig. 6 is a cross-sectional view of a pressure regulating group of the present invention.

Fig. 7 is a cross-sectional view of a lubrication assembly of the present invention.

FIG. 8 is a schematic view of the structure of the annular abutment plate, the receiving tub and the rotary drive unit of the present invention.

Reference numerals: 1. a base; 2. an H-shaped groove; 3. a receiving ring; 4. a clamping mechanism; 40. an arc-shaped clamping plate; 41. clamping and fixing the driving group; 410. a rotary gear; 411. a connecting rod; 412. a rack; 413. a pushing frame; 42. a positioning rod; 43. a limit rod; 44. a fork; 45. a lubrication group; 450. a housing case; 451. a nipple; 452. an oil inlet pipe; 5. a support frame; 6. a pressurizing rotation mechanism; 60. a ring-shaped retaining plate; 61. a receiving barrel; 62. a rod; 63. a rotating disc; 64. a guide rod; 65. pressurizing a gravity block; 66. a pressure regulating group; 660. an adjusting rod; 661. a limiting disc; 662. a limit bar; 663. a receiving groove; 664. a receiving block; 665. a through groove; 666. an alignment groove; 667. a buffer rubber ring; 67. a guide group; 670. a guide wheel; 671. a limit cover; 68. a locking group; 680. a locking lever; 681. a limit pressing plate; 69. a rotary drive group; 690. a drive shaft; 691. a drive gear; 692. a plug-in cylinder; 693. a gear ring; 694. a clamping groove; 695. a spring groove; 696. moving the clamping block; 697. a return spring; 601. a rope; 7. a slewing bearing; 70. an inner ring; 71. and an outer ring.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In order that those skilled in the art will better understand the present invention, the following description will be given in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1,2 and3, a slewing bearing life detection apparatus includes: the base 1, the mounting groove has been seted up at the top of base 1, set up on the base 1 with the H type groove 2 of mounting groove intercommunication, fixed mounting has on the mounting groove and accepts the ring 3, has placed slewing bearing 7 on accepting the ring 3, slewing bearing 7 comprises a plurality of balls of rolling connection between inner ring 70 and outer loop 71 and the two, all set up the connecting hole of evenly arranging on inner ring 70 and the outer loop 71, accept and install the card solid mechanism 4 that carries out the fixed outer loop 71 jointly between ring 3 and the base 1.

Referring to fig. 1, a support frame 5 having an inverted L shape is installed at the top of a base 1, and a horizontal section of the support frame 5 is connected with a pressurizing rotation mechanism 6 which applies an axial pressure to an inner ring 70 and drives the inner ring 70 to rotate.

Referring to fig. 1 and 2, the clamping mechanism 4 includes two arc-shaped clamping plates 40 disposed on the base 1, a clamping driving set 41 for driving the two arc-shaped clamping plates 40 to move, and two positioning rods 42 fixedly connected to the top of the receiving ring 3 and symmetrically disposed, the supporting frame 5 is disposed between the two positioning rods 42, a plurality of limiting rods 43 uniformly distributed along the circumferential direction of the top of the receiving ring 3 are mounted on the top of the receiving ring 3, the top of each positioning rod 42 is higher than the top of each limiting rod 43, the limiting rods 43 and the positioning rods 42 are located on the same circular distribution line, a plurality of fork frames 44 uniformly distributed are connected to the top of each arc-shaped clamping plate 40 through a fixing block, the fork frames 44 are in a Y shape, the limiting rods 43 and the positioning rods 42 are all in contact with the inner walls of the corresponding fork frames 44, and a lubricating set 45 is mounted on the top of each arc-shaped clamping plate 40.

When the slewing bearing 7 is placed, two connecting holes symmetrically arranged on the outer ring 71 are aligned with the two positioning rods 42, the connecting holes are sleeved on the positioning rods 42, so that the positioning function of the slewing bearing 7 is realized, then the slewing bearing 7 is directly moved downwards to be abutted against the bearing ring 3, at the moment, a plurality of limiting rods 43 on the bearing ring 3 are all inserted into corresponding connecting holes on the outer ring 71 to limit the outer ring 71, then the arc clamping plate 40 is driven to move towards the slewing bearing 7 through the clamping driving group 41 until the arc clamping plate 40 abuts against the outer ring 71, and meanwhile, the fork 44 moves to the upper side of the outer ring 71 and abuts against the corresponding limiting rods 43 and the side walls of the positioning rods 42, so that multiple and multidirectional positioning of the outer ring 71 is realized, the stability and convenience of fixing the outer ring 71 are improved, and the influence on the detection result caused by the movement of the outer ring 71 in the service life detection process of the slewing bearing 7 is avoided.

Referring to fig. 1, fig. 2, fig. 4, fig. 6 and fig. 8, the pressurizing rotation mechanism 6 includes a ring-shaped retaining plate 60 and a receiving barrel 61 connected to the lower end of the ring-shaped retaining plate 60, a plurality of inserting rods 62 uniformly distributed along the circumferential direction of the ring-shaped retaining plate 60 are installed at the lower end of the ring-shaped retaining plate 60, a rotating disk 63 is rotatably connected to the receiving barrel 61, three guiding rods 64 uniformly distributed along the circumferential direction of the rotating disk 63 are installed at the top of the rotating disk 63, the top of the guiding rods 64 slide through a supporting frame 5, a plurality of pressurizing gravity blocks 65 sequentially distributed from top to bottom are sleeved on the guiding rods 64 in a sliding manner, the pressurizing gravity blocks 65 are located below the horizontal section of the supporting frame 5, a pressure adjusting group 66 for limiting the pressurizing gravity blocks 65 is installed on the horizontal section of the supporting frame 5, two sides of the horizontal section of the supporting frame 5 are provided with guiding groups 67 along the width direction of the horizontal section of the supporting frame, two ropes 601 are connected between the ring-shaped retaining plate 60 and the arc-shaped clamping plate 40, the ropes 601 bypass the corresponding guiding groups 67, locking groups 68 for limiting the guiding rods 64 are installed on the supporting frame 5, and the driving barrel 61 and the ring-shaped retaining plate 60 are driven by the driving ring-shaped retaining groups 69 to rotate in the h-shaped groove 2.

When the arc-shaped clamping plate 40 moves towards the slewing bearing 7, the annular retaining plate 60 and the bearing barrel 61 move downwards under the action of gravity to pull the rope 601, when the inserted link 62 contacts with the top of the inner ring 70, the inner ring 70 is rotated, so that the inserted link 62 is aligned with a connecting hole on the inner ring 70 and the inserted link 62 is inserted into the connecting hole, the inner ring 70 is driven to rotate when the annular retaining plate 60 and the bearing barrel 61 rotate to detect the service life of the slewing bearing 7, then the number of the pressurizing gravity blocks 65 falling on the rotating disk 63 is regulated through the pressure regulating group 66 according to requirements, so that axial pressure is applied to the inner ring 70, the axial pressure is regulated, the annular retaining plate 60 and the bearing barrel 61 are driven to rotate through the rotation driving group 69 to drive the inner ring 70 to rotate, and the load applied under the actual working condition of the slewing bearing 7 can be simulated through the application of the axial pressure, so that the performance and the service life of the slewing bearing 7 under different working conditions can be tested more truly.

Referring to fig. 5 and 6, the pressure adjusting set 66 includes an adjusting rod 660 rotatably connected to the horizontal section of the supporting frame 5, a limiting disc 661 is installed at the top of the adjusting rod 660 after penetrating through the supporting frame 5, two limiting bars 662 are installed on the side wall of the limiting disc 661, the two limiting bars 662 are vertically arranged, two containing grooves 663 symmetrically arranged along the circumferential direction of the two containing grooves 663 are provided on the side wall of the lower end of the adjusting rod 660, a receiving block 664 is rotatably connected in the containing grooves 663 through torsion spring rods, through grooves 665 are provided in the middle of the pressurizing gravity block 65, alignment grooves 666 symmetrically arranged along the circumferential direction of the through grooves 665 and vertically penetrating through the side wall of the through grooves 665, buffer rubber rings 667 uniformly arranged along the circumferential direction of the two adjacent pressurizing gravity blocks 65 and sleeved on the corresponding guide rods 64 are arranged at the lower ends of the pressurizing gravity block 65, and the adjusting rod 660 penetrates through all the through grooves 665 and then limits the pressurizing gravity blocks 65 through the receiving blocks 664.

When the applied axial pressure is regulated, the regulating rod 660 is rotated, the regulating rod 660 can only perform 90-degree reciprocating rotation under the limiting action of the two limiting strips 662 and the guide rod 64, when the regulating rod 660 is rotated by 90 degrees, the regulating rod 660 drives the bearing block 664 to rotate and align with the alignment groove 666 on the lowest pressurizing gravity block 65, and the pressurizing gravity block 65 enters the bearing barrel 61 under the action of self gravity so as to apply axial pressure to the inner ring 70; the rest of the pressurizing gravity blocks 65 on the adjusting rod 660 continue to move downwards along the adjusting rod 660, and the symmetrical grooves on the two adjacent pressurizing gravity blocks 65 are staggered up and down, so that the bearing blocks 664 bear the pressurizing gravity blocks 65 positioned at the lowest side on the adjusting rod 660 again, when the inner ring 70 needs to be continuously weighted, the adjusting rod 660 is rotated again, and the convenience of changing the axial pressure during the service life detection of the slewing bearing 7 is improved.

When the arc-shaped clamping plate 40 moves away from the slewing bearing 7 and drives the annular retaining plate 60 to move upwards with the bearing barrel 61 through the rope 601, the guide rod 64 and the pressurizing gravity block 65 in the bearing barrel 61 are driven to move upwards synchronously, when the pressurizing gravity block 65 in the bearing barrel 61 is contacted with the buffer rubber ring 667 on the pressurizing gravity block 65 on the regulating rod 660, the pressurizing gravity block 65 on the regulating rod 660 is pushed to move upwards along the regulating rod 660, meanwhile, the bearing block 664 on the regulating rod 660 and the pressurizing gravity block 65 on the lower side of the bearing block are in abutting and overturning rotation to enter the accommodating groove 663, so that the pressurizing gravity block 65 in the bearing barrel 61 is sleeved on the regulating rod 660, when the arc-shaped clamping plate 40 stops moving, the pressurizing gravity block 65 in the bearing barrel 61 is all sleeved on the regulating rod 660, and the bearing block 664 is positioned below the pressurizing gravity block 65 on the lowest side, so that the pressurizing gravity block 65 is supported, the function of automatic resetting of the pressurizing gravity block 65 is realized, and the convenience of axial pressure conversion during the life detection of the slewing bearing 7 is further improved.

Referring to fig. 1 and 2, the clamping driving set 41 includes two rotating gears 410 respectively rotatably connected in two transverse sections of the H-shaped groove 2, two symmetrically arranged connecting rods 411 are mounted on the arc-shaped clamping plates 40, the lower ends of the connecting rods 411 penetrate into the H-shaped groove 2 after penetrating through the base 1 in a sliding manner, racks 412 slidably connected with the H-shaped groove 2 and meshed with the rotating gears 410 are connected to two sides of the rotating gears 410, two racks 412 on two sides of the same rotating gear 410 are respectively connected with corresponding connecting rods 411 on the two arc-shaped clamping plates 40, a pushing frame 413 is slidably connected to the top of the base 1, and the pushing frame 413 is connected with one of the arc-shaped clamping plates 40.

When the pushing frame 413 is connected with an external driving source (such as an electric sliding block), the pushing frame 413 is driven to move by the external driving source, the pushing frame 413 drives the arc clamping plates 40 connected with the pushing frame 413, the connecting rod 411 and the rack 412 to move, and the rack 412 drives the other arc clamping plate 40 to move with the rack 412 through meshing with the rotary gear 410, so that the synchronous movement function of the two arc clamping plates 40 is realized until the arc clamping plates 40 are abutted against the outer side wall of the outer ring 71, and the fixing function of the outer ring 71 is realized.

Referring to fig. 2 and 8, the rotary driving set 69 includes an arc slot provided on the base 1 and communicated with the H-shaped slot 2, a driving shaft 690 is rotatably connected in the arc slot, a driving gear 691 is fixedly sleeved on the driving shaft 690, a socket barrel 692 concentric with the receiving ring 3 is rotatably connected in the middle of the H-shaped slot 2 through a fixing seat, a gear ring 693 meshed with the driving gear 691 is fixedly sleeved on the outer side wall of the socket barrel 692, a clamping slot 694 is provided on the inner wall of the socket barrel 692, a spring slot 695 is provided on the side wall of the receiving barrel 61, a movable clamping block 696 is slidably connected in the spring slot 695, the movable clamping block 696 is connected with the spring slot 695 through a return spring 697, the lower end of one side of the movable clamping block 696 extending out of the spring slot 695 is inclined, and the top of the inner wall of the socket barrel 692 is arc-shaped.

The base 1 is provided with a motor (not shown in the figure, and can be arranged below the driving shaft 690) connected with the driving shaft 690, when the annular retaining plate 60 and the carrying barrel 61 are inserted into the inner ring 70 under the action of gravity and move towards the inserting barrel 692, if the movable retaining block 696 is not aligned with the clamping groove 694, the lower surface of the lower end of the movable retaining block 696 is abutted against the inserting barrel 692 so as to move towards the spring groove 695, so that the carrying barrel 61 is inserted into the inserting barrel 692, when the detection is carried out, the driving shaft 690 is driven by the motor to rotate, the driving shaft 690 is meshed with the gear 691 through the driving gear 693 so as to drive the inserting barrel 692 to rotate, and when the clamping groove 694 is aligned with the movable retaining block 696, the movable retaining block 696 is inserted into the clamping groove 694 under the action of the reset spring 697, so that the annular retaining plate 60 and the carrying barrel 61 are driven by the inner ring 70 to rotate at a high speed, and whether the normal slewing bearing 7 is normal, abnormal sound or no vibration or no crack is observed after a certain time.

Referring to fig. 5 and 6, the guide set 67 includes an ear plate fixedly connected to a side wall of the horizontal section of the support frame 5, two sides of the ear plate are rotatably connected with guide wheels 670, two ropes 601 respectively bypass the two guide wheels 670, and a limit cover 671 for limiting the ropes 601 is installed on the support frame 5.

When the arc-shaped clamping plate 40 moves towards the slewing bearing 7, the rope 601 is loosened, the annular retaining plate 60 and the bearing barrel 61 move downwards under the action of gravity and pull the rope 601, the rope 601 moves on the guide wheel 670, and the limit cover 671 clamps the rope 601 on the guide wheel 670 so as to limit the rope 601, so that the rope 601 is prevented from being separated from the guide wheel 670 in the moving process; when the arc-shaped clamping plate 40 moves in the direction away from the slewing bearing 7, the rope 601 is tensioned, and drives the annular retaining plate 60 and the carrying barrel 61 to move upwards, so that the arc-shaped clamping plate 40 drives the annular retaining plate 60 and the carrying barrel 61 to move up and down in the moving process, and a driving source is reduced.

Referring to fig. 5, the locking set 68 includes three locking bars 680 rotatably connected to the top of the supporting frame 5 in a threaded fit manner, the locking bars 680 are in one-to-one correspondence with the guide bars 64, the side walls of the locking bars 680 are provided with limiting pressing plates 681, when the arc-shaped clamping plate 40 abuts against the outer ring 71, after the annular retaining plate 60 and the receiving barrel 61 are inserted into the inner ring 70 under the action of gravity, the locking bars 680 are rotated, the locking bars 680 drive the limiting pressing plates 681 to rotate to the top of the corresponding guide bars 64, so as to limit the top of the guide bars 64, and prevent the annular retaining plate 60 and the receiving barrel 61 from moving upwards under the action of rotational centrifugal force to affect the detection accuracy when the rotary driving set 69 drives the annular retaining plate 60 and the receiving barrel 61 to rotate together with the inner ring 70.

Referring to fig. 1 and 7, the lubrication assembly 45 includes a housing box 450 connected to the arc-shaped clamping plate 40 through a fixing frame and having an arc-shaped cavity, a plurality of oil nozzles 451 which are communicated with the housing box 450 and uniformly distributed along the housing box 450 are installed at the bottom of the housing box 450, the oil nozzles 451 are located at the gap between the inner ring 70 and the outer ring 71, an oil inlet pipe 452 which is communicated with the housing box 450 is installed at the top of the housing box 450, the oil nozzles 451 are staggered with the limiting rod 43 and the positioning rod 42, the lower end of the housing box 450 is located above the upper end of the positioning rod 42, when the arc-shaped clamping plate 40 drives the housing box 450 to move, the housing box 450 collides with the limiting rod 43 and the positioning rod 42, the oil inlet pipe 452 is connected with an external oil path system (such as an oil pump), and oil drops are intermittently added into the gap between the inner ring 70 and the outer ring 71 through the housing box 450 and the oil nozzles 451, thereby the abrasion degree of the slewing bearing 7 is reduced, the actual working condition of the slewing bearing 7 is effectively simulated, and the service life detection accuracy of the slewing bearing 7 is further improved.

Referring to fig. 1 and 2, the top of the limiting rod 43 and the positioning rod 42 and the bottom of the inserting rod 62 are all in rolling connection with balls, and when the limiting rod 43, the positioning rod 42 and the inserting rod 62 are inserted into the connecting hole, the balls are in rolling contact with and guide the side wall of the connecting hole, so that the convenience of inserting the limiting rod 43, the positioning rod 42 and the inserting rod 62 into the connecting hole is improved.

During operation, the limiting rod 43 and the positioning rod 42 in the clamping mechanism 4 are inserted into the connecting hole on the outer ring 71 to circumferentially rotate and limit the outer ring 71 and position the slewing bearing 7, so that the preliminary limiting of the slewing bearing 7 is realized.

Then, the outer clamping and clamping of the outer ring 71 and the up-and-down movement limiting of the fork frame 44 to the outer ring 71 are realized through the two arc clamping plates 40, so that the outer ring 71 is subjected to multiple and multi-directional positioning, the stability and convenience of the outer ring 71 fixation are improved, and the influence on the detection result caused by the movement of the outer ring 71 in the process of detecting the service life of the slewing bearing 7 is avoided.

And the annular retaining plate 60 and the carrying barrel 61 move downwards under the action of gravity and are inserted into the inner ring 70 while the arc-shaped clamping plate 40 moves, the inserted rod 62 is inserted into the connecting hole on the inner ring 70, and then the axial pressure applied to the slewing bearing 7 is regulated by the pressure regulating group 66, so that the load applied to the slewing bearing 7 under the actual working condition can be simulated, and the performance and the service life of the slewing bearing 7 under different working conditions can be tested more truly.

Finally, the rotary driving group 69 is started to drive the inner ring 70 to rotate at a high speed through the annular retaining plate 60 and the carrying barrel 61, and after a certain time of high-speed rotation, whether the slewing bearing 7 is normal or not is observed, and the normal slewing bearing 7 is free from abnormal vibration, abnormal sound, crack or fracture.

In the description of the present invention, it should be understood that the terms "long", "width", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

The embodiments of the present invention are all preferred embodiments of the present invention, and are not limited in scope by the present invention, so that all equivalent changes according to the structure, shape and principle of the present invention are covered in the scope of the present invention.

Claims (4)

1. A slewing bearing life detection apparatus, characterized by comprising: the device comprises a base (1), wherein a mounting groove is formed in the top of the base (1), an H-shaped groove (2) communicated with the mounting groove is formed in the base (1), a bearing ring (3) is fixedly arranged on the mounting groove, a slewing bearing (7) is placed on the bearing ring (3), and a clamping mechanism (4) is jointly arranged between the bearing ring (3) and the base (1);

The slewing bearing (7) consists of an inner ring (70), an outer ring (71) and a plurality of balls in rolling connection with the inner ring (70) and the outer ring (71), and the inner ring (70) and the outer ring (71) are provided with uniformly arranged connecting holes;

the top of the base (1) is provided with an inverted L-shaped supporting frame (5), and the horizontal section of the supporting frame (5) is connected with a pressurizing and rotating mechanism (6) which applies axial pressure to the inner ring (70) and drives the inner ring (70) to rotate;

The clamping mechanism (4) comprises two arc clamping plates (40) arranged on the base (1), a clamping driving group (41) for driving the two arc clamping plates (40) to move, and two positioning rods (42) fixedly connected to the top of the bearing ring (3) and symmetrically arranged, wherein a plurality of limiting rods (43) uniformly distributed along the circumferential direction of the bearing ring are arranged at the top of the bearing ring (3), a plurality of fork frames (44) uniformly distributed are connected to the top of the arc clamping plates (40) through fixing blocks, the fork frames (44) are Y-shaped, the limiting rods (43) and the positioning rods (42) are all in contact with the inner walls of the corresponding fork frames (44), and a lubricating group (45) is arranged at the top of the arc clamping plates (40);

The clamping driving group (41) comprises two rotary gears (410) which are respectively and rotatably connected in two transverse sections of the H-shaped groove (2), two symmetrically arranged connecting rods (411) are arranged on the arc-shaped clamping plates (40), the lower ends of the connecting rods (411) penetrate the H-shaped groove (2) after penetrating through the base (1) in a sliding mode, racks (412) which are connected with the H-shaped groove (2) in a sliding mode and are in meshed transmission with the rotary gears (410) are connected to two sides of the rotary gears (410), the two racks (412) on two sides of the same rotary gear (410) are respectively connected with the corresponding connecting rods (411) on the two arc-shaped clamping plates (40), pushing frames (413) are connected to the top of the base (1) in a sliding mode, and the pushing frames (413) are connected with one arc-shaped clamping plate (40);

The pressurizing rotating mechanism (6) comprises a ring-shaped retaining plate (60) and a carrying barrel (61) connected to the lower end of the ring-shaped retaining plate (60), a plurality of inserting rods (62) which are uniformly distributed along the circumferential direction of the ring-shaped retaining plate (60) are arranged at the lower end of the ring-shaped retaining plate (60), a rotating disc (63) is connected in the carrying barrel (61) in a rotating mode, three guide rods (64) which are uniformly distributed along the circumferential direction of the rotating disc (63) are arranged at the top of the rotating disc (63), the tops of the guide rods (64) slide through a supporting frame (5), a plurality of pressurizing gravity blocks (65) which are sequentially distributed from top to bottom are sleeved on the guide rods (64) in a sliding mode, a pressure adjusting group (66) which limits the pressurizing gravity blocks (65) is arranged on the horizontal section of the supporting frame (5), and a rotating driving group (69) which drives the carrying barrel (61) and the ring-shaped retaining plate (60) to rotate is arranged in an H-shaped groove (2).

The pressure regulating group (66) comprises a regulating rod (660) which is rotationally connected to the horizontal section of the supporting frame (5), a limiting disc (661) is arranged at the top of the regulating rod (660) after penetrating through the supporting frame (5), two limiting strips (662) are arranged on the side wall of the limiting disc (661), the two limiting strips (662) are vertically arranged, two containing grooves (663) which are symmetrically arranged along the circumferential direction of the regulating rod (660) are arranged on the side wall of the lower end of the regulating rod (660), a bearing block (664) is rotationally connected in the containing groove (663) through torsion spring rods, a through groove (665) is arranged in the middle of the pressurizing gravity block (65), alignment grooves (666) which are symmetrically arranged along the circumferential direction of the through groove (665) and vertically penetrate through the side wall of the through groove, buffer rubber rings (667) which are uniformly arranged along the circumferential direction of the two adjacent pressurizing gravity blocks (65) and are sleeved on the corresponding guide rods (64) are arranged at the lower ends of the pressurizing gravity blocks (65), and the regulating rod (660) penetrates through the bearing blocks (664) to limit the pressurizing gravity blocks (65);

The rotary driving group (69) comprises an arc-shaped groove which is formed in the base (1) and is communicated with the H-shaped groove (2), a driving shaft (690) is rotatably connected in the arc-shaped groove, a driving gear (691) is fixedly sleeved on the driving shaft (690), an inserting cylinder (692) concentric with the bearing ring (3) is rotatably connected in the middle of the H-shaped groove (2) through a fixing seat, a gear ring (693) which is meshed with the driving gear (691) and is driven by the fixing seat is fixedly sleeved on the outer side wall of the inserting cylinder (692), a clamping groove (694) is formed in the inner wall of the inserting cylinder (692), a spring groove (695) is formed in the side wall of the bearing cylinder (61), a movable clamping block (696) is connected in a sliding manner in the spring groove (695), one side lower end of the movable clamping block (696) extending out of the spring groove (695) is inclined, and the top of the inner wall of the inserting cylinder (692) is arc-shaped;

The utility model discloses a support frame (5) horizontal segment is all installed guide group (67) along the both sides that its width direction was arranged, be connected with two ropes (601) between annular butt plate (60) and arc cardboard (40), guide group (67) that correspond are walked around to rope (601), install on support frame (5) and carry out spacing locking group (68) to guide bar (64), guide group (67) are including fixed connection otic placode at support frame (5) horizontal segment lateral wall, the both sides rotation of otic placode is connected with leading wheel (670), two ropes (601) are walked around two leading wheels (670) respectively, install on support frame (5) spacing lid (671) that carry out spacing to rope (601).

2. The slewing bearing life detection device according to claim 1, wherein: the lubrication group (45) comprises a containing box (450) which is connected to the arc-shaped clamping plate (40) through a fixing frame and is in an arc-shaped cavity shape, a plurality of oil nozzles (451) which are communicated with the containing box (450) and are uniformly distributed along the containing box, the oil nozzles (451) are located at gaps between an inner ring (70) and an outer ring (71), oil inlet pipes (452) which are communicated with the containing box (450) are arranged at the top of the containing box (450), and the oil nozzles (451), a limiting rod (43) and a positioning rod (42) are distributed in a staggered mode, and the lower end of the containing box (450) is located above the upper end of the positioning rod (42).

3. The slewing bearing life detection device according to claim 1, wherein: the locking group (68) comprises three locking rods (680) which are rotatably connected to the top of the supporting frame (5) in a threaded fit mode, the locking rods (680) are in one-to-one correspondence with the guide rods (64), and a limiting pressing plate (681) is arranged on the side wall of each locking rod (680).

4. The slewing bearing life detection device according to claim 1, wherein: the top of the limiting rod (43) and the locating rod (42) and the bottom of the inserted link (62) are connected with balls in a rolling way.