CN209992172U

CN209992172U - Multifunctional bearing testing machine

Info

Publication number: CN209992172U
Application number: CN201920367660.1U
Authority: CN
Inventors: 李伟光; 李振; 陈辉; 刘振宇; 黄文波; 刘兴教; 刘铨权; 王春宝
Original assignee: Foshan Heng Sheng Medical Automation Co Ltd
Current assignee: Foshan Heng Sheng Medical Automation Co Ltd
Priority date: 2019-03-21
Filing date: 2019-03-21
Publication date: 2020-01-24
Anticipated expiration: 2029-03-21

Abstract

The utility model discloses a multifunctional bearing testing machine is a can carry out axial, radial and overturn loaded testing machine simultaneously. The utility model discloses can realize the constant speed constant direction's when rotational speed test on an equipment, still can carry out the reciprocal test of swing of fixed angle, can carry out the fixed or fixed bearing test of the rotatory outer lane of inner circle of the rotatory inner circle of outer lane according to the bearing test fixture of difference moreover. The utility model discloses a drive adjustment part, power supply auto-change over device, hybrid main shaft device, radial loading device, bearing installation frock and axial overturning loading part, drive adjustment part establish in one side of base, power supply auto-change over device adopts the shaft coupling to be connected with drive adjustment part and hybrid main shaft device respectively, hybrid main shaft device adopts the locking bolt to be connected with bearing installation frock, radial loading device establishes in one side of bearing installation frock, axial overturning loading part sets up the one side at bearing installation frock.

Description

Multifunctional bearing testing machine

Technical Field

The utility model belongs to bearing testing machine field relates to a combined type antifriction bearing life-span testing machine, specifically is a can carry out axial, radial and overturn loaded bearing life-span testing machine simultaneously.

Background

The rolling bearing is one of the most widely used mechanical parts, and is one of the most easily damaged elements in mechanical equipment, especially under the condition of high speed and heavy load, because of the long-term repeated action of the contact stress of the working surface, the rolling bearing is easy to cause the faults of fatigue, cracks, denudation, indentation and the like, thereby causing the phenomena of fracture, sticking, burning loss and the like of the bearing, and further causing the abnormity of the whole equipment.

Therefore, the service life test before the rolling bearing leaves the factory can be carried out, the production process of the bearing can be improved, and the timely replacement of the bearing used on equipment can be guided. At present, the service life test of the bearing is less than that of a bearing test device which can simultaneously meet axial loading, overturning loading and radial loading and bear a high-speed heavy-load working condition, can meet the rotating speed test of a constant speed, a constant direction and the like, and can complete the swing reciprocating test of a fixed angle.

The utility model relates to a solve above-mentioned problem, provide a multi-functional combined test testing machine of bearing test, not only can satisfy the loading of the different combination forms of three kinds of loading modes, can also carry out the heavy load loading. Meanwhile, two different power sources are provided, namely constant-speed and constant-direction equal-rotating-speed testing can be realized on the same equipment, and fixed-angle swing reciprocating testing can also be performed. And the utility model discloses according to the bearing test fixture of difference, can carry out the fixed or the fixed test of two kinds of modes in the rotatory outer lane of inner circle of the rotatory inner circle of outer lane. The utility model discloses mechanism design benefit can realize multiple function test on an equipment, has functions such as switching convenience moreover.

Disclosure of Invention

The utility model aims at providing a many power supplies antifriction bearing life-span testing machine of compound loading mode, this life-span testing machine can bear the bearing test of high-speed heavy load operating mode, and it is convenient to have the dismouting, advantages such as convenient operation.

The purpose and idea of the utility model are realized by the following technical scheme:

a multifunctional bearing testing machine comprises a base, a driving adjusting part, a power source switching device, a dynamic and static pressure main shaft device, a radial loading device, a bearing installation tool and an axial overturning loading part, and is characterized in that the driving adjusting part is arranged on one side of the base and fixed on a T-shaped groove arranged on the base by adopting a T-shaped bolt, the power source switching device and the dynamic and static pressure main shaft device are respectively arranged on a box body of the base, the power source switching device is respectively connected with the driving adjusting part and the dynamic and static pressure main shaft device by adopting a coupler, a torque sensor is arranged between the power source switching device and the dynamic and static pressure main shaft device, the dynamic and static pressure main shaft device is connected with the bearing installation tool by adopting a locking bolt, the bearing installation tool is arranged among the dynamic and static pressure main shaft device, the radial loading device and the axial overturning loading part, the radial loading device is arranged on one side of the bearing, the radial loading device is fixed in a T-shaped groove formed in the base through a T-shaped bolt, and the axial overturning loading part is arranged on one side of the bearing installation tool and locked on the base through the T-shaped bolt.

The base, include: the oil conveying tank, the T-shaped grooves, the foundation bolt grooves and the hoisting bolt holes are arranged above the bottom plate, the oil conveying grooves are formed in the periphery of the bottom plate, the T-shaped grooves are distributed along the upper surface of the bottom plate at equal intervals, the foundation bolt grooves are formed in the side surface of the bottom plate and are evenly distributed, the hoisting bolt holes are formed in the two side surfaces of the bottom plate along the length direction, and the left side surface and the right side surface are respectively provided with two hoisting bolt holes; the main guide rail and the auxiliary guide rail are respectively fixed on the bottom plate through locking bolts, the main guide rail can provide a uniform positioning reference for the driving adjustment part, the large box body and the axial overturning loading part, and the auxiliary guide rail can provide a high-precision positioning reference for the radial loading device; the big box body is fixed on the T-shaped groove on the bottom plate through the T-shaped locking bolt, the small box body cover and the main box body cover are arranged above the big box body, an oil return groove of the dynamic and static pressure main shaft device is formed in the big box body, the front half part of the big box body is used for installing the power source switching device, and the rear half part of the big box body is used for installing the dynamic and static pressure main shaft device.

The drive adjusting portion includes: the main driving handle adjusting support plate is fixed on the side surface of the bottom plate through a bolt, the main driving handle bearing seat is installed on the main driving handle adjusting support plate and used for supporting the main driving displacement adjusting screw rod, one end of the main driving displacement adjusting screw rod is connected with the main driving handle through a square shaft, the other end of the main driving displacement adjusting screw rod is connected with the main driving motor installation seat through screw threads, the main driving motor installation seat locking bolt is used for locking the main driving motor installation seat on the bottom plate, the main driving motor is fixed on the main driving motor installation seat through a bolt, when the main driving motor installation seat locking bolt is loosened, the installation position of the main driving motor can be adjusted by rotating the main driving handle, and then the main driving motor is locked and fixed by locking a main driving motor mounting seat locking bolt.

The power source switching device includes: the device comprises a gear shaft, a transmission assembly upper left fixed gland, a transmission assembly upper right fixed gland, a swing cylinder mounting rack, a swing cylinder, a transition gear, a transition wheel bracket, a transition gear bearing, a transition gear shaft, a driving gear, a swing cylinder mounting plate, a transition wheel rotating shaft, a transition wheel rotating support bearing, a transition wheel bracket fixing screw, a rotary encoder, a positioning pin, a transition wheel bracket handle, a left bearing bracket, a left end cover, a left gear shaft support bearing, a transmission shaft support shell, a right end cover, a right bearing bracket and a right gear shaft support bearing, wherein the gear shaft is connected with an output shaft of a main driving motor through a coupler, the gear shaft is arranged on the transmission shaft support shell through the left bearing bracket, the left gear shaft support bearing, the right bearing bracket and the right gear shaft support bearing on the left side and the right side of the transmission shaft support shell, and the left side of the transmission shaft support, the right end is fixed on a right upper fixed gland of the transmission assembly by adopting a bolt, a left gear shaft supporting bearing is sealed and positioned by adopting a left end cover, a right gear shaft supporting bearing is sealed and positioned by adopting a right end cover, a gear is arranged in the middle of a gear shaft and used for power transmission of the oscillating cylinder, and a gear meshing gap with a certain width is arranged on a transmission shaft supporting shell; the swing cylinder mounting frame is fixed on the large box body through a locking bolt, the swing cylinder is mounted on the swing cylinder mounting plate, the swing cylinder mounting plate is locked on the swing cylinder mounting frame through a bolt, the rotary encoder is fixed at the tail of the swing cylinder and used for measuring the swing angle of the swing cylinder, and the driving gear is fixed on an output shaft of the swing cylinder; the transition gear is arranged on a transition wheel bracket through a transition gear shaft and a transition gear bearing, the transition gear can rotate along the axial direction of the transition gear shaft, the transition gear can be meshed with the driving gear and the gear shaft so as to transmit the motion and the torque of the oscillating cylinder to the gear shaft, a transition wheel rotating shaft is fixed on an oscillating cylinder mounting bracket, the transition wheel bracket can rotate along the axial direction of the transition wheel rotating shaft under the supporting action of a transition wheel rotating supporting bearing, an arc-shaped guide rail groove is arranged above the transition wheel bracket, a transition wheel bracket fixing screw rod is arranged in the arc-shaped guide rail groove and fixed on the oscillating cylinder mounting bracket, the transition wheel bracket can be locked on the oscillating cylinder mounting bracket through a locking nut on the transition wheel bracket fixing screw rod, a positioning hole for the transition gear to be meshed during working is arranged above the transition wheel bracket, and the transition wheel bracket is matched with the positioning hole arranged above the transition wheel bracket through a positioning pin arranged on the back of the oscillating cylinder mounting, and the transition wheel bracket handle is fixed on the transition wheel bracket through threaded connection and used for manually switching the power source of the oscillating cylinder.

The hybrid spindle device comprises: the main shaft comprises a main shaft outer sleeve, a main shaft, a rear bearing bush, a main shaft rear retaining ring, a main shaft fastening nut, a main shaft outer ring flange, a main shaft waterproof ring, a main shaft limiting pin, a front bearing bush, a main shaft transmission flange, a main shaft rear end cover and a middle bearing bush, wherein the rear bearing bush, the middle bearing bush and the front bearing bush are respectively arranged in an inner cavity of the main shaft outer sleeve; the middle bearing bush and the front bearing bush are axially positioned through the inner step surface of the spindle outer sleeve, the spindle outer ring flange is arranged on the spindle outer sleeve and plays a role in sealing oil, the spindle waterproof ring is arranged on the spindle outer ring flange and prevents external dust from entering, the spindle transmission flange is arranged on the front end surface of the spindle, and the spindle limiting pin is arranged on the end surface of the spindle transmission flange and plays a role in positioning.

The radial loading device comprises: the radial loading device comprises a radial loading base, a radial loading limiting column, a radial loading cylinder mounting seat, a radial loading cylinder, a radial loading locking bolt, a radial loading supporting seat locking bolt and a radial loading head, wherein the radial loading limiting column is arranged at the tail of the radial loading base and used for transversely limiting the radial loading cylinder mounting seat; the radial loading support seat is arranged at the front end of the radial loading base through a dovetail groove and used for supporting a radial loading head, one end of the radial loading head is connected with an output rod of a radial loading cylinder, the other end of the radial loading head is connected with a bearing installation tool through a bolt, tension and compression radial loads can be applied to the outer ring rotary type test bearing, and after the radial loading support seat is properly adjusted, the radial loading support seat can be adjusted and locked and fixed on a T-shaped groove of a bottom plate through a radial loading support seat locking bolt; the upper parts of the radial loading base, the radial loading cylinder mounting seat and the radial loading supporting seat are provided with U-shaped grooves, so that the sliding position can be conveniently adjusted.

The bearing installation frock be an outer lane rotation test fixture, include: the device comprises an outer ring rotary type connecting flange plate, an outer ring rotary type test bearing, an outer ring rotary type bearing inner ring retaining ring, an outer ring rotary type bearing mounting plate, a bearing outer ring retaining ring, an outer ring rotary type bearing outer sleeve, an outer ring rotary type outer ring retaining ring fastening bolt, an outer ring rotary type inner ring retaining ring fastening bolt, an outer ring rotary type buckle nut, an outer ring rotary type overturning loading connecting piece and an outer ring rotary type locking bolt; the outer ring rotary type connecting flange plate is arranged on the left side of the bearing mounting tool and is connected with the hybrid main shaft device through an outer ring rotary type tool locking bolt hole, the right end of the outer ring rotary type connecting flange plate is connected with the outer ring rotary type bearing outer sleeve through an outer ring rotary type locking bolt, and the outer ring rotary type connecting flange plate is in positioning fit with the outer ring rotary type bearing outer sleeve through an outer ring rotary type bearing outer sleeve positioning conical surface; the inner ring of the outer ring rotary type test bearing is arranged on a shaft collar in an outer ring rotary type bearing mounting disc in an interference fit manner, the inner ring of the outer ring rotary type bearing is axially fixed through an inner ring sleeve retaining ring of the outer ring rotary type bearing, the inner ring sleeve retaining ring of the outer ring rotary type bearing is fixed on the outer ring rotary type bearing mounting disc through an outer ring rotary type inner ring sleeve retaining ring fastening bolt, the outer ring of the outer ring rotary type test bearing is arranged on an outer ring rotary type bearing outer sleeve, the outer ring of the outer ring rotary type test bearing is axially positioned through the outer ring sleeve retaining ring of the bearing, and the outer ring sleeve retaining ring of the bearing is fixed on; the outer ring rotary type overturning loading connecting piece is arranged below the outer ring rotary type bearing mounting disc, threads are arranged on the inner surface and the outer surface of the outer ring rotary type overturning loading connecting piece, internal threads of the outer ring rotary type overturning loading connecting piece are connected with an overturning loading part in the axial overturning loading part and used for applying overturning load to an inner ring of the outer ring rotary type testing bearing, and external threads of the outer ring rotary type overturning loading connecting piece are connected with an outer ring rotary type buckle nut and used for locking the overturning loading part; the left end face of the outer ring rotary type connecting flange plate is provided with an outer ring rotary type flange positioning conical surface and an outer ring rotary type tool locking bolt hole which are connected with the hybrid main shaft device, and the right side of the outer ring rotary type connecting flange plate is provided with an outer ring rotary type bearing outer sleeve positioning conical surface which is matched with the outer ring rotary type bearing outer sleeve;

the right end face of the outer ring rotary bearing mounting disc is provided with an outer ring rotary axial loading arc face matched with the axial loading part in the axial overturning loading part, the outer ring rotary axial loading arc face can be matched with the axial loading part, when the overturning loading and the axial loading are simultaneously carried out on the outer ring rotary test bearing, the axial loading part in the axial overturning loading part can generate micro sliding on the outer ring rotary axial loading arc face, and the axial loading rod of the axial loading part is prevented from bearing the overturning load; an outer ring rotary axial positioning hole is formed above the outer ring rotary axial loading arc surface on the right side of the outer ring rotary bearing mounting disc and can be used for positioning an axial loading part; an outer ring rotary thimble hole matched with the thimble assembly body is formed in the middle of the right side face of the outer ring rotary bearing mounting plate, and the outer ring rotary bearing mounting plate and the thimble assembly body are matched with each other to guarantee the rotation precision of the outer ring rotary test bearing; an outer ring rotary radial loading seat is arranged on one side of the cylindrical surface of the outer ring rotary bearing mounting disc and can be matched with a radial loading device to finish the application of radial load on the outer ring rotary test bearing; the outer ring rotary bearing mounting disc is provided with a locking bolt process through hole for locking the outer ring rotary locking bolt.

The axial overturning loading part comprises: the loading device comprises an axial loading part, an overturning loading part, a thimble positioning part and a loading base, wherein the axial loading part is positioned on the upper side of the overturning loading part and is used for applying axial load to an outer ring rotary type test bearing; the overturning loading part is arranged at the middle position and can apply overturning loads in two directions of tension and compression to the outer ring rotary type test bearing; the thimble positioning part is arranged at the lower side of the overturning loading part and used for supporting a bearing installation tool and increasing the axial rotation rigidity of the axial rotation part; the loading base is arranged above the bottom plate and used for installing the loading part, the overturning loading part and the thimble positioning part, and a locking bolt of the loading base arranged above the loading base is a T-shaped bolt and can be matched with a T-shaped groove arranged above the bottom plate to fix the loading base; a dovetail groove is arranged above the loading base and used for supporting and guiding the axial loading part, the overturning loading part and the thimble positioning part;

the axial loading part comprises: the axial loading cylinder is arranged on the axial loading seat through the locking bolt, the axial loading seat is fixed on the loading base through the axial loading seat locking bolt, the axial loading seat is provided with a dovetail groove matched with the loading base, an output rod of the axial loading cylinder is connected with the axial pressure sensor arranged on the rear pushing plate, one end of the axial loading rod is connected with the rear pushing plate, the other end of the axial loading rod is connected with the front pushing plate, the axial loading rod slides forwards and backwards through the axial loading rod wear-resistant sleeve arranged in the guide seat, the bidirectional loading connecting bolt is arranged on the front pushing plate and connected with a mounting tool of a test bearing to apply tension and compression bidirectional loads, the guide post is arranged on the front push plate and is matched with an outer ring rotary axial positioning hole on the bearing installation tool for axial positioning, and the contact surface of the front push plate and the bearing installation tool is an arc surface, so that when an axial load and an overturning load are simultaneously applied to the bearing installation tool, the axial loading part can bear part of the overturning load, and only the outer ring rotary test bearing can bear the axial load and the overturning load;

the overturning loading part comprises: the overturning loading device comprises an overturning loading cylinder, an overturning pressure sensor, a connecting shaft sleeve, an overturning loading shaft, an overturning wear-resistant sleeve and an overturning loading sleeve, wherein the overturning loading cylinder is fixed on an axial loading seat through a locking bolt, a telescopic rod of the overturning loading cylinder is connected with the overturning pressure sensor arranged on the connecting shaft sleeve, one end of the overturning loading shaft is connected with the connecting shaft sleeve, the other end of the overturning loading shaft is connected with an outer ring rotary type overturning loading connecting piece in a bearing installation tool, the overturning loads are applied in tension and compression directions, the overturning loading sleeve is arranged in a guide seat through interference fit, two ends of the overturning loading sleeve are respectively provided with one set of overturning wear-resistant sleeve, and the overturning wear-resistant sleeve is matched with the overturning loading shaft to enable the overturning loading shaft to freely move forwards and backwards;

thimble location portion include: an advancing and retreating hand wheel, a hand wheel mounting seat, a screw rod supporting bearing, a hand wheel mounting seat locking bolt, a feeding screw rod, a screw rod sleeve, a guide seat, a thimble sleeve, a thimble assembly body, a guide seat locking bolt, a dovetail bottom plate and a guide seat connecting bolt, wherein the hand wheel mounting seat is fixed on a loading base through the hand wheel mounting seat locking bolt, a screw rod supporting bearing is arranged in the hand wheel mounting seat and is used for supporting a feed screw rod, one end of the feed screw rod is connected with an advancing and retreating hand wheel, the other end of the feed screw rod is connected with a screw rod sleeve, the screw rod sleeve is arranged on a guide seat, the accessible rotates to advance and retreat the hand wheel and drives the guide holder back-and-forth movement, and the thimble assembly body passes through the thimble sleeve to be installed on the guide holder, carries out the axial of bearing installation frock and supports, and the guide holder passes through guide holder connecting bolt locking on the forked tail bottom plate, and the forked tail bottom plate passes through guide holder locking bolt with the guide holder as a whole and fixes on the loading base.

Inner circle rotation type test fixture, include: the inner ring rotary type inner ring rotating shaft is arranged on the left side of the inner ring rotary type testing tool and is mutually fixed with the dynamic and static pressure main shaft device through a bolt hole in the end surface of the left side, so that the whole inner ring rotary type inner ring rotating shaft is driven to rotate; the inner ring rotary type test bearing is arranged at the position of a journal of the inner ring rotary type inner ring rotating shaft, and the width of the journal is slightly smaller than that of an inner ring of the inner ring rotary type test bearing; the inner ring rotary type bearing inner ring sleeve check ring is fixed on the inner ring rotary type inner ring rotating shaft through an inner ring rotary type inner ring sleeve check ring fastening bolt and is used for axially positioning the inner ring rotary type test bearing; the inner ring rotary bearing is sleeved outside the right side of the ring rotary testing tool and is matched with the outer ring of the inner ring rotary testing bearing; the inner ring rotary type bearing outer ring sleeve retaining ring is arranged between an inner ring rotary type inner ring rotating shaft and an inner ring rotary type bearing outer sleeve and is connected with the inner ring rotary type bearing outer sleeve through an inner ring rotary type outer ring sleeve retaining ring fastening bolt; the sensor mounting assembly is mounted on the inner ring rotary bearing outer sleeve;

the left side of the inner ring rotary inner ring rotating shaft is provided with an inner ring rotary mounting conical surface which is matched with the outer conical surface of the dynamic and static pressure main shaft device, and the right side of the inner ring rotary inner ring rotating shaft is provided with an inner ring rotary thimble conical surface which is matched with a thimble positioning part in the axial overturning loading part;

the right side of the outer sleeve of the inner ring rotary bearing is provided with an inner ring rotary axial loading arc surface which is matched with an axial loading part in the axial overturning loading part, and when the inner ring rotary test bearing is subjected to overturning loading and axial loading simultaneously, the axial loading part can generate micro sliding on the inner ring rotary axial loading arc surface to prevent the axial loading part from bearing the overturning loading; an inner ring rotary axial positioning hole is formed above an inner ring rotary axial loading arc surface on the right side of the inner ring rotary bearing outer sleeve, axial positioning can be performed on an axial loading part, an inner ring rotary radial loading seat is arranged on the outer side of the cylindrical surface of the inner ring rotary bearing outer sleeve, and loading of radial loads of the inner ring rotary test bearing can be completed by matching with a radial loading device.

Compared with the prior art, namely a single rolling bearing test scheme, specifically a single radial loading test, a single axial loading test or a single overturning loading test, and a single power source, namely a single revolution test or a single swing test, and a single outer ring rotation test scheme or an inner ring rotation test scheme. The utility model provides a multi-functional bearing test composite testing machine not only can satisfy the loading of the different combination forms of three kinds of loading modes, can also select different power supplies, for example can select the gyration test, can also select the swing test, can also select the test scheme of outer circle formula or inner circle rotation type simultaneously according to the actual test requirement, the utility model discloses not only have mechanism design benefit, can also realize the test of multiple project on an equipment, simplified the accredited testing organization of bearing, have characteristics such as easy dismounting moreover.

Drawings

Fig. 1 is a schematic diagram of the rear axle side structure of the present invention.

Fig. 2 is a schematic diagram of the front axle side structure of the present invention.

Fig. 3 is a main sectional view of the present invention.

Fig. 4 is a schematic view of the mechanism of the base part.

Fig. 5 is a schematic view of a driving adjustment part.

Fig. 6 is a schematic front-axle side structure diagram of the power source switching device.

Fig. 7 is a rear axle side structural view of the power source switching device.

Fig. 8 is a front sectional view of the power source switching device.

Fig. 9 is a main sectional view of the hybrid spindle device.

Fig. 10 is a schematic front axle side structure diagram of the radial loading device.

Fig. 11 is a rear axle side structure diagram of the radial loading device.

Fig. 12 is a front view of the bearing mounting tool.

Fig. 13 is a sectional view in the direction of fig. 12A-a.

Fig. 14 is a sectional view taken in the direction of fig. 12B-B.

FIG. 15 is a front axle side structural schematic view of the axial overturn loading portion.

FIG. 16 is a front cross-sectional view of the axial overturn loading portion.

Fig. 17 is a schematic axial side structure diagram of the inner ring rotation type test fixture.

FIG. 18 is a front cross-sectional view of an inner race rotary test fixture.

Shown in the figure: 1 is a base, 1-1 is a bottom plate, 1-1-1 is an oil conveying groove, 1-1-2 is a T-shaped groove, 1-1-3 is a foundation bolt groove, 1-1-4 is a hoisting bolt hole, 1-2 is a main guide rail, 1-3 is an auxiliary guide rail, 1-4 is a large box body, 1-5 is a small box body cover, 1-6 is a main box body cover, 2 is a driving adjusting part, 2-1 is a main driving handle adjusting supporting plate, 2-2 is a main driving handle bearing seat, 2-3 is a main driving handle, 2-4 is a main driving displacement adjusting screw rod, 2-5 is a main driving motor mounting seat, 2-6 is a main driving motor mounting seat locking bolt, 2-7 is a main driving motor, 3 is a power source switching device, 3-1 is a gear shaft, 3-2 is a transmission assembly upper left fixed gland, 3-3 is a transmission assembly upper right fixed gland, 3-4 is a swing cylinder mounting rack, 3-5 is a swing cylinder, 3-6 is a transition gear, 3-7 is a transition wheel bracket, 3-8 is a transition gear bearing, 3-9 is a transition gear shaft, 3-10 is a driving gear, 3-11 is a swing cylinder mounting plate, 3-12 is a transition wheel rotating shaft, 3-13 is a transition wheel rotating support bearing, 3-14 is a transition wheel bracket fixing screw, 3-15 is a rotary encoder, 3-16 is a positioning pin, 3-17 is a transition wheel bracket handle, 3-18 is a left bearing bracket, 3-19 is a left end cover, 3-20 is a left gear shaft support bearing, 3-21 is a transmission shaft support shell, 3-22 is a right end cover, 3-23 is a right bearing bracket, 3-24 is a right gear shaft support bearing, 4 is a hydrostatic spindle device, 4-1 is a spindle outer sleeve, 4-2 is a spindle, 4-3 is a rear bearing bush, 4-4 is a spindle rear retaining ring, 4-5 is a spindle fastening nut, 4-6 is a spindle outer ring flange, 4-7 is a spindle waterproof ring, 4-8 is a spindle limiting pin, 4-9 is a front bearing bush, 4-10 is a spindle transmission flange, 4-11 is a spindle rear end cover, 4-12 is a middle bearing bush, 5 is a radial loading device, 5-1 is a radial loading base, 5-2 is a radial loading limiting column, 5-3 is a radial loading cylinder mounting seat, 5-4 is a radial loading cylinder, 5-5 is a radial loading locking bolt, 5-6 is a radial loading supporting seat, 5-7 is a radial loading supporting seat locking bolt, 5-8 is a radial loading head, 6 is a bearing installation tool, 6-1 is an outer ring rotary connecting flange plate, 6-1-1 is an outer ring rotary flange positioning conical surface, 6-1-2 is an outer ring rotary bearing outer sleeve positioning conical surface, 6-1-3 is an outer ring rotary tool locking bolt hole, 6-2 is an outer ring rotary test bearing, 6-3 is an outer ring rotary bearing inner ring retaining ring, 6-4 is an outer ring rotary bearing installation plate, 6-4-1 is an outer ring rotary axial loading arc surface, 6-4-2 is an outer ring rotary axial positioning hole, 6-4-3 is an outer ring rotary thimble hole, 6-4-4 is a rotary outer ring radial loading seat, 6-4-5 is a locking bolt process through hole, 6-5 is an outer ring rotary bearing outer ring sleeving check ring, 6-6 is an outer ring rotary bearing outer ring, 6-7 is an outer ring rotary outer ring sleeving check ring fastening bolt, 6-8 is an outer ring rotary inner ring sleeving check ring fastening bolt, 6-9 is an outer ring rotary buckle nut, 6-10 is an outer ring rotary overturning loading connecting piece, 6-11 is an outer ring rotary locking bolt, 7 is an axial overturning loading part, 7-1 is a loading base, 7-2 is a hand wheel mounting seat, 7-3 is an axial loading seat, 7-4 is a advancing and retreating hand wheel, 7-5 is an overturning loading cylinder, 7-6 is an axial loading cylinder, 7-7 is a lead screw supporting bearing, 7-8 is a hand wheel mounting seat locking bolt, 7-9 is a loading base locking bolt, 7-10 is an axial loading base locking bolt, 7-11 is an axial pressure sensor, 7-12 is a feeding screw rod, 7-13 is a rear push disk, 7-14 is an axial loading rod wear-resistant sleeve, 7-15 is a guide seat, 7-16 is an overturning pressure sensor, 7-17 is a connecting shaft sleeve, 7-18 is an overturning loading shaft, 7-19 is an overturning wear-resistant sleeve, 7-20 is an overturning loading sleeve, 7-21 is a screw rod sleeve, 7-22 is a thimble sleeve, 7-23 is a dovetail bottom plate, 7-24 is a guide seat connecting bolt, 7-25 is a guide seat locking bolt, 7-26 is a thimble assembly body, 7-27 is an axial loading rod, 7-28 is a bidirectional loading connecting bolt, and 7-29 is a guide column, 7-30 is a front push plate, 8 is an inner ring rotary type testing tool, 8-1 is an inner ring rotary type inner ring rotating shaft, 8-1-1 is an inner ring rotary type mounting conical surface, 8-1-2 is an inner ring rotary type thimble conical surface, 8-2 is an inner ring rotary type testing bearing, 8-3 is an inner ring rotary type bearing inner ring sleeving retaining ring, 8-4 is an inner ring rotary type bearing outer sleeve, 8-4-1 is an inner ring rotary axial loading arc surface, 8-4-2 is an inner ring rotary axial positioning hole, 8-4-3 is an inner ring rotary radial loading seat, 8-5 is an inner ring rotary bearing outer ring sleeve retainer ring, 8-6 is an inner ring rotary outer ring sleeve retainer ring fastening bolt, 8-7 is an inner ring rotary inner ring sleeve retainer ring fastening bolt, and 8-8 is a sensor mounting assembly body.

Detailed Description

The following specific examples further describe the objects of the present invention in detail, and the examples are not repeated herein, but the embodiments of the present invention are not limited to the following examples.

Referring to the attached drawings 1 to 3, a multifunctional bearing testing machine comprises a base 1, a driving adjusting part 2, a power source switching device 3, a dynamic and static pressure main shaft device 4, a radial loading device 5, a bearing installation tool 6 and an axial overturning loading part 7, and is characterized in that the driving adjusting part 2 is arranged at one side of the base 1 and is fixed on a T-shaped groove 1-1-2 arranged on the base 1 by adopting a T-shaped bolt, the power source switching device 3 and the dynamic and static pressure main shaft device 4 are respectively arranged on a large box body 1-4 of the base 1, the power source switching device 3 is respectively connected with the driving adjusting part 2 and the dynamic and static pressure main shaft device 4 by adopting a coupler, a torque sensor is arranged between the power source switching device 3 and the dynamic and static pressure main shaft device 4, and the dynamic and static pressure main shaft device 4 is connected with the bearing installation tool 6 by adopting, the bearing installation tool 6 is arranged among the hybrid main shaft device 4, the radial loading device 5 and the axial overturning loading part 7, the radial loading device 5 is arranged on one side of the bearing installation tool 6 and is connected with the bearing installation tool by adopting a locking bolt, the radial loading device 5 is fixed in a T-shaped groove 1-1-2 arranged on the base 1 through a T-shaped bolt, and the axial overturning loading part 7 is arranged on one side of the bearing installation tool 6 and is locked on the base 1 through the T-shaped bolt.

Referring to fig. 4, the base 1 includes: a bottom plate 1-1, a main guide rail 1-2, an auxiliary guide rail 1-3, a large box body 1-4, a small box body cover 1-5 and a main box body cover 1-6, an oil conveying groove 1-1-1, a T-shaped groove 1-1-2, a foundation bolt groove 1-1-3 and a hoisting bolt hole 1-1-4 are arranged above the bottom plate 1-1, the oil conveying groove 1-1-1 is arranged on the periphery of the bottom plate 1-1, the T-shaped grooves 1-1-2 are distributed at equal intervals along the upper surface of the bottom plate 1-1, the foundation bolt grooves 1-1-3 are arranged on the side surface of the bottom plate 1-1 and are uniformly distributed, the hoisting bolt holes 1-1-4 are arranged on two side surfaces of the bottom plate 1-1 along the length direction, and the left side surface and the right side surface are respectively provided with two hoisting bolt; the main guide rail 1-2 and the auxiliary guide rail 1-3 are respectively fixed on the bottom plate 1-1 through locking bolts, the main guide rail 1-2 can provide a uniform positioning reference for the driving adjusting part 2, the large box body 1-4 and the axial overturning loading part 7, and the auxiliary guide rail 1-3 can provide a high-precision positioning reference for the radial loading device 5; the large box body 1-4 is fixed on a T-shaped groove 1-1-2 on the bottom plate 1-1 through a T-shaped locking bolt, the small box body cover 1-5 and the main box body cover 1-6 are arranged above the large box body 1-4, an oil return groove of the dynamic and static pressure main shaft device 4 is arranged in the large box body 1-4, the front half part of the large box body 1-4 is used for installing a power source switching device 3, and the rear half part of the large box body 1-4 is used for installing the dynamic and static pressure main shaft device 4.

Referring to fig. 5, the driving adjustment part 2 includes: a main driving handle adjusting supporting plate 2-1, a main driving handle bearing seat 2-2, a main driving handle 2-3, a main driving displacement adjusting screw rod 2-4, a main driving motor mounting seat 2-5, a main driving motor mounting seat locking bolt 2-6 and a main driving motor 2-7, wherein the main driving handle adjusting supporting plate 2-1 is fixed on the side surface of the bottom plate 1-1 through bolts, the main driving handle bearing seat 2-2 is arranged on the main driving handle adjusting supporting plate 2-1 and used for supporting the main driving displacement adjusting screw rod 2-4, one end of the main driving displacement adjusting screw rod 2-4 is connected with the main driving handle 2-3 through a square shaft, the other end is connected with the main driving motor mounting seat 2-5 through screw rod threads, and the main driving motor mounting seat locking bolt 2-6 is used for locking the main driving motor mounting seat 2-5 on the bottom plate 1-1 The main driving motor 2-7 is fixed on the main driving motor mounting seat 2-5 through bolts, when the locking bolts 2-6 of the main driving motor mounting seat are loosened, the mounting position of the main driving motor 2-7 can be adjusted by rotating the main driving handle 2-3, and then the main driving motor 2-7 is locked and fixed through locking the locking bolts 2-6 of the main driving motor mounting seat.

Referring to fig. 6 to 8, the power source switching device 3 includes: 3-1 parts of gear shaft, 3-2 parts of left upper fixed gland of transmission assembly, 3-3 parts of right upper fixed gland of transmission assembly, 3-4 parts of swing cylinder mounting rack, 3-5 parts of swing cylinder, 3-6 parts of transition gear, 3-7 parts of transition wheel bracket, 3-8 parts of transition gear bearing, 3-9 parts of transition gear shaft, 3-10 parts of driving gear, 3-11 parts of swing cylinder mounting plate, 3-12 parts of transition wheel rotating shaft, 3-13 parts of transition wheel rotating support bearing, 3-14 parts of transition wheel bracket fixing screw, 3-15 parts of rotary encoder, 3-16 parts of positioning pin, 3-17 parts of transition wheel bracket handle, 3-18 parts of left bearing bracket, 3-19 parts of left end cover, 3-20 parts of left gear shaft support bearing, 3-21 parts of transmission shell, 3-22 parts of right end cover, A right bearing bracket 3-23 and a right gear shaft support bearing 3-24, the gear shaft 3-1 is connected with the output shaft of the main drive motor 2-7 through a shaft coupling, the gear shaft 3-1 is arranged on the transmission shaft support shell 3-21 through the left bearing bracket 3-18, the left gear shaft support bearing 3-20, the right bearing bracket 3-23 and the right gear shaft support bearing 3-24 on the left and right sides, the left side of the transmission shaft support shell 3-21 is fixed on the left upper fixed gland 3-2 of the transmission assembly by bolts, the right side is fixed on the right upper fixed gland 3-3 of the transmission assembly by bolts, the left gear shaft support bearing 3-20 is sealed and positioned by a left end cover 3-19, the right gear shaft support bearing 3-24 is sealed and positioned by a right end cover 3-22, the middle position of the gear shaft 3-1 is a gear which is used for power transmission of the swing cylinder 3-5, and a gear meshing gap with a certain width is arranged on the transmission shaft supporting shell 3-21; the swing cylinder mounting rack 3-4 is fixed on the large box body 1-4 through a locking bolt, the swing cylinder 3-5 is mounted on the swing cylinder mounting rack 3-11, the swing cylinder mounting rack 3-11 is locked on the swing cylinder mounting rack 3-4 through a bolt, the rotary encoder 3-15 is fixed at the tail of the swing cylinder 3-5 and used for measuring the swing angle of the swing cylinder 3-5, and the driving gear 3-10 is fixed on an output shaft of the swing cylinder 3-5; the transition gear 3-6 is arranged on a transition wheel bracket 3-7 through a transition gear shaft 3-9 and a transition gear bearing 3-8, the transition gear 3-6 can rotate along the axial direction of the transition gear shaft 3-9, the transition gear 3-6 can be meshed with a driving gear 3-10 and a gear shaft 3-1 so as to transmit the motion and the torque of the oscillating cylinder 3-5 to the gear shaft 3-1, a transition wheel rotating shaft 3-12 is fixed on an oscillating cylinder mounting rack 3-4, the transition wheel bracket 3-7 can rotate along the axial direction of the transition wheel rotating shaft 3-12 under the supporting action of a transition wheel rotating supporting bearing 3-13, an arc guide rail groove is arranged above the transition wheel bracket 3-7, and a transition wheel bracket fixing screw rod 3-14 is arranged in the arc guide rail groove, the transition wheel support 3-7 can be locked on the swing cylinder mounting frame 3-4 through a locking nut on a transition wheel support fixing screw rod 3-14, a positioning hole for meshing the transition gear 3-6 during working is arranged above the transition wheel support 3-7, the transition wheel support 3-7 is matched with the positioning hole arranged above the transition wheel support 3-7 through a positioning pin 3-16 arranged on the back of the swing cylinder mounting frame 3-4 to accurately position the transition gear 3-6 during meshing, and a transition wheel support handle 3-17 is fixed on the transition wheel support 3-7 through threaded connection and used for manually switching the power source of the swing cylinder 3-5.

Referring to fig. 9, the hybrid spindle device 4 includes: 4-1 of a main shaft outer sleeve, 4-2 of a main shaft, 4-3 of a rear bearing bush, 4-4 of a main shaft rear retaining ring, 4-5 of a main shaft fastening nut, 4-6 of a main shaft outer ring flange, 4-7 of a main shaft waterproof ring, 4-8 of a main shaft limiting pin, 4-9 of a front bearing bush, 4-10 of a main shaft transmission flange, 4-11 of a main shaft rear end cover and 4-12 of a middle bearing bush, wherein the rear bearing bush 4-3, the middle bearing bush 4-12 and the front bearing bush 4-9 are respectively arranged in an inner cavity of the main shaft outer sleeve 4-1, the main shaft 4-2 penetrates through the middle of the three bearing bushes, the rear bearing bush 4-3 is axially positioned through the main shaft rear retaining ring 4-4, 4-5 of the main shaft fastening nut is adopted for locking, and the tail part of the, the oil sealing function is realized; the middle bearing bush 4-12 and the front bearing bush 4-9 are axially positioned through the inner step surface of the main shaft outer sleeve 4-1, the main shaft outer ring flange 4-6 is arranged on the main shaft outer sleeve 4-1 to play a role in sealing oil, the main shaft waterproof ring 4-7 is arranged on the main shaft outer ring flange 4-6 to prevent external dust from entering, the main shaft transmission flange 4-10 is arranged on the front end surface of the main shaft 4-2, and the main shaft limit pin 4-8 is arranged on the end surface of the main shaft transmission flange 4-10 to play a role in positioning.

Referring to fig. 10 to 11, the radial loading device 5 includes: the radial loading device comprises a radial loading base 5-1, a radial loading limiting column 5-2, a radial loading cylinder mounting seat 5-3, a radial loading cylinder 5-4, a radial loading locking bolt 5-5, a radial loading supporting seat 5-6, a radial loading supporting seat locking bolt 5-7 and a radial loading head 5-8, wherein the radial loading limiting column 5-2 is arranged at the tail part of the radial loading base 5-1 and used for limiting the radial loading cylinder mounting seat 5-3 transversely, the radial loading cylinder mounting seat 5-3 is mutually matched with the radial loading base 5-1 through a dovetail groove and can slide back and forth, the radial loading cylinder 5-4 is fixed on the radial loading cylinder mounting seat 5-3 through a bolt, and after the radial loading cylinder mounting seat 5-3 is properly adjusted, the radial loading cylinder mounting seat 5-5 can be locked and fixed on a T-shaped groove 1 of a bottom plate 1-1 through the radial loading locking bolt 5 -1-2; the radial loading support seat 5-6 is arranged at the front end of the radial loading base 5-1 through a dovetail groove and is used for supporting a radial loading head 5-8, one end of the radial loading head 5-8 is connected with an output rod of a radial loading cylinder 5-4, the other end of the radial loading head is connected with a bearing installation tool 6 through a bolt, tension and compression radial loads can be applied to the outer ring rotary type test bearing 6-2, and after the radial loading support seat 5-6 is properly adjusted, the radial loading support seat 5-6 can be adjusted and locked and fixed on a T-shaped groove 1-1-2 of the bottom plate 1-1 through a radial loading support seat locking bolt 5-7; u-shaped grooves are formed in the upper portions of the radial loading base 5-1, the radial loading cylinder mounting seat 5-3 and the radial loading supporting seat 5-6, and therefore the front and rear sliding positions can be adjusted conveniently.

Referring to fig. 12 to 14, the bearing installation tool 6 is an outer ring rotation testing tool, and includes: the device comprises an outer ring rotary type connecting flange 6-1, an outer ring rotary type test bearing 6-2, an outer ring rotary type bearing inner ring retaining ring 6-3, an outer ring rotary type bearing mounting disc 6-4, a bearing outer ring retaining ring 6-5, an outer ring rotary type bearing outer sleeve 6-6, an outer ring rotary type outer ring sleeve retaining ring fastening bolt 6-7, an outer ring rotary type inner ring sleeve retaining ring fastening bolt 6-8, an outer ring rotary type buckle nut 6-9, an outer ring rotary type overturning loading connecting piece 6-10 and an outer ring rotary type locking bolt 6-11; the outer ring rotary type connecting flange 6-1 is arranged on the left side of the bearing mounting tool 6 and is connected with the hydrostatic spindle device 4 through outer ring rotary type tool locking bolt holes 6-1-3, the right end of the outer ring rotary type connecting flange 6-1 is connected with an outer ring rotary type bearing outer sleeve 6-6 through outer ring rotary type locking bolts 6-11, and the outer ring rotary type connecting flange 6-1 is in positioning fit with the outer ring rotary type bearing outer sleeve 6-6 through an outer ring rotary type bearing outer sleeve positioning conical surface 6-1-2; the inner ring of the outer ring rotary type test bearing 6-2 is arranged on a shaft ring in the outer ring rotary type bearing mounting disc 6-4 in an interference fit manner, the inner ring retaining ring 6-3 of the outer ring rotary bearing is axially fixed, the inner ring retaining ring 6-3 of the outer ring rotary bearing is fixed on the outer ring rotary bearing mounting disc 6-4 by using the outer ring rotary inner ring retaining ring fastening bolt 6-8, the outer ring of the outer ring rotary test bearing 6-2 is mounted on the outer ring rotary bearing outer sleeve 6-6, the outer ring of the outer ring rotary type test bearing 6-2 is axially positioned through the bearing outer ring sleeving check ring 6-5, and the bearing outer ring sleeving check ring 6-5 is fixed on the outer ring rotary type bearing outer sleeve 6-6 through the outer ring rotary type outer ring sleeving check ring fastening bolt 6-7; the outer ring rotary type overturning loading connecting piece 6-10 is arranged below the outer ring rotary type bearing mounting disc 6-4, the inner surface and the outer surface of the outer ring rotary type overturning loading connecting piece 6-10 are both provided with threads, the inner threads of the outer ring rotary type overturning loading connecting piece 6-10 are connected with an overturning loading part in the axial overturning loading part 7 and used for applying overturning load to the inner ring of the outer ring rotary type testing bearing 6-2, and the outer threads of the outer ring rotary type overturning loading connecting piece 6-10 are connected with an outer ring rotary type buckle nut 6-9 and used for locking the overturning loading part; the left end face of the outer ring rotary type connecting flange 6-1 is provided with an outer ring rotary type flange positioning conical surface 6-1-1 and an outer ring rotary type tool locking bolt hole 6-1-3 which are connected with the hybrid spindle device 4, and the right side of the outer ring rotary type connecting flange 6-1 is provided with an outer ring rotary type bearing outer sleeve positioning conical surface 6-1-2 which is matched with the outer ring rotary type bearing outer sleeve 6-6;

the right end face of the outer ring rotary bearing mounting disc 6-4 is provided with an outer ring rotary axial loading arc face 6-4-1 which is matched with an axial loading part in the axial overturning loading part 7, the outer ring rotary axial loading arc face 6-4-1 can be matched with the axial loading part, when the outer ring rotary test bearing 6-2 is subjected to overturning loading and axial loading simultaneously, the axial loading part in the axial overturning loading part 7 can generate micro sliding on the outer ring rotary axial loading arc face 6-4-1, and an axial loading rod 7-27 of the axial loading part is prevented from bearing the overturning load; an outer ring rotary axial positioning hole 6-4-2 is arranged above an outer ring rotary axial loading arc surface 6-4-1 on the right side of the outer ring rotary bearing mounting disc 6-4 and can be used for positioning an axial loading part; an outer ring rotary thimble hole 6-4-3 matched with the thimble assembly 7-26 is arranged in the middle of the right side surface of the outer ring rotary bearing mounting disc 6-4, and the rotary precision of the outer ring rotary test bearing 6-2 can be guaranteed by matching the outer ring rotary bearing mounting disc 6-4 with the thimble assembly 7-26; an outer ring rotary radial loading seat 6-4-4 is arranged on one side of the cylindrical surface of the outer ring rotary bearing mounting disc 6-4 and can be matched with a radial loading device 5 to finish the application of radial load on the outer ring rotary test bearing 6-2; the outer ring rotary bearing mounting disc 6-4 is provided with a locking bolt process through hole 6-4-5 for locking the outer ring rotary locking bolt 6-11.

Referring to fig. 15 and 16, the axial overturn loading part 7 comprises: the loading device comprises an axial loading part, an overturning loading part, a thimble positioning part and a loading base 7-1, wherein the axial loading part is positioned on the upper side of the overturning loading part and is used for applying an axial load to an outer ring rotary type testing bearing 6-2; the overturning loading part is arranged at the middle position and can apply overturning loads in two directions of tension and compression to the outer ring rotary type test bearing 6-2; the thimble positioning part is arranged at the lower side of the overturning loading part and used for supporting the bearing installation tool 6 and increasing the axial rotation rigidity of the axial rotation part; the loading base 7-1 is arranged above the bottom plate 1-1 and used for installing a loading part, an overturning loading part and an ejector pin positioning part, and a loading base locking bolt 7-9 arranged above the loading base 7-1 is a T-shaped bolt and can be matched with a T-shaped groove 1-1-2 arranged above the bottom plate 1-1 to fix the loading base 7-1; a dovetail groove is arranged above the loading base 7-1 and used for supporting and guiding the axial loading part, the overturning loading part and the thimble positioning part;

the axial loading part comprises: the axial loading cylinder 7-6, the axial loading seat 7-3, the locking bolt 7-10 of the axial loading seat, the axial pressure sensor 7-11, the rear push disk 7-13, the wear-resistant sleeve 7-14 of the axial loading rod, the guide seat 7-15, the axial loading rod 7-27, the bidirectional loading connecting bolt 7-28, the guide column 7-29 and the front push plate 7-30, the axial loading cylinder 7-6 is arranged on the axial loading seat 7-3 through the locking bolt, the axial loading seat 7-3 is fixed on the loading base 7-1 through the locking bolt 7-10 of the axial loading seat, the axial loading seat 7-3 is provided with a dovetail groove matched with the loading base 7-1, the output rod of the axial loading cylinder 7-6 is connected with the axial pressure sensor 7-11 arranged on the rear push disk 7-13, one end of an axial loading rod 7-27 is connected with a rear push disk 7-13, the other end is connected with a front push plate 7-30, the axial loading rod 7-27 slides back and forth through an axial loading rod wear-resistant sleeve 7-14 arranged in a guide seat 7-15, a bidirectional loading connecting bolt 7-28 is arranged on the front push plate 7-30 and is connected with a mounting tool of a test bearing for applying tension and compression bidirectional loads, a guide column 7-29 is arranged on the front push plate 7-30 and is matched with an outer ring rotary type axial positioning hole 6-4-2 on the bearing mounting tool 6 for axial positioning, the contact surface of the front push plate 7-30 and the bearing mounting tool 6 is an arc surface, and the axial loading part can be prevented from bearing part of overturning loads when the axial loads and the overturning loads are simultaneously applied to the bearing mounting tool 6, only the outer ring rotary test bearing 6-2 is subjected to axial load and overturning load;

the overturning loading part comprises: the overturning loading device comprises an overturning loading cylinder 7-5, an overturning pressure sensor 7-16, a connecting shaft sleeve 7-17, an overturning loading shaft 7-18, an overturning wear-resistant sleeve 7-19 and an overturning loading sleeve 7-20, wherein the overturning loading cylinder 7-5 is fixed on an axial loading seat 7-3 through a locking bolt, a telescopic rod of the overturning loading cylinder 7-5 is connected with the overturning pressure sensor 7-16 arranged on the connecting shaft sleeve 7-17, one end of the overturning loading shaft 7-18 is connected with the connecting shaft sleeve 7-17, the other end of the overturning loading shaft 7-18 is connected with an outer ring rotary type overturning loading connecting piece 6-10 in a bearing installation tool 6 to apply loads in two directions of pulling and pressing of the overturning loads, the overturning loading sleeve 7-20 is arranged in a guide seat 7-15 through interference fit, two ends of the overturning loading sleeve 7-20 are respectively provided with one overturning wear-resistant sleeve 7-19, the overturning wear-resistant sleeves 7-19 are matched with the overturning loading shafts 7-18, so that the overturning loading shafts 7-18 can freely move back and forth;

thimble location portion include: a forward and backward hand wheel 7-4, a hand wheel mounting seat 7-2, a screw rod supporting bearing 7-7, a hand wheel mounting seat locking bolt 7-8, a feed screw rod 7-12, a screw rod sleeve 7-21, a guide seat 7-15, an ejector pin sleeve 7-22, an ejector pin assembly 7-26, a guide seat locking bolt 7-25, a dovetail bottom plate 7-23 and a guide seat connecting bolt 7-24, wherein the hand wheel mounting seat 7-2 is fixed on a loading base 7-1 through the hand wheel mounting seat locking bolt 7-8, the hand wheel mounting seat 7-2 is internally provided with the screw rod supporting bearing 7-7 for supporting the feed screw rod 7-12, one end of the feed screw rod 7-12 is connected with the forward and backward hand wheel 7-4, and the other end is connected with the screw rod sleeve 7-21, the screw rod sleeve 7-21 is installed on the guide seat 7-15, the guide seat 7-15 can be driven to move back and forth by rotating the advancing and retreating hand wheel 7-4, the thimble assembly 7-26 is installed on the guide seat 7-15 through the thimble sleeve 7-22 to axially support the bearing installation tool 6, the guide seat 7-15 is locked on the dovetail bottom plate 7-23 through the guide seat connecting bolt 7-24, and the dovetail bottom plate 7-23 and the guide seat 7-15 are fixed on the loading base 7-1 as a whole through the guide seat locking bolt 7-25.

Referring to fig. 17 to 18, the present embodiment is different from embodiment 7 in that the present embodiment is an inner ring rotation testing tool, and the inner ring rotation testing tool 8 includes: the device comprises an inner ring rotary type inner ring rotating shaft 8-1, an inner ring rotary type test bearing 8-2, an inner ring rotary type bearing inner ring sleeving check ring 8-3, an inner ring rotary type bearing outer sleeve 8-4, an inner ring rotary type bearing outer ring sleeving check ring 8-5, an inner ring rotary type outer ring sleeving check ring fastening bolt 8-6, an inner ring rotary type inner ring sleeving check ring fastening bolt 8-7 and a sensor installation assembly body 8-8, wherein the inner ring rotary type inner ring rotating shaft 8-1 is arranged on the left side of the inner ring rotary type test tool 8 and is mutually fixed with a dynamic and static pressure main shaft device 4 through a bolt hole in the end face of the left side, so that the whole inner; the inner ring rotary type test bearing 8-2 is arranged at the position of a shaft neck of the inner ring rotary type inner ring rotating shaft 8-1 in an interference fit manner, and the width of the shaft neck is slightly smaller than that of the inner ring rotary type test bearing 8-2; the inner ring rotary bearing inner ring sleeve check ring 8-3 is fixed on the inner ring rotary inner ring rotating shaft 8-1 through an inner ring rotary inner ring sleeve check ring fastening bolt 8-7 and is used for axially positioning the inner ring rotary test bearing 8-2; the inner ring rotary bearing outer sleeve 8-4 is arranged on the right side of the whole mechanism and is matched with the outer ring of the inner ring rotary test bearing 8-2; the inner ring rotary type bearing outer ring sleeving check ring 8-5 is arranged between an inner ring rotary type inner ring rotating shaft 8-1 and an inner ring rotary type bearing outer sleeve 8-4 and is connected with the inner ring rotary type bearing outer sleeve 8-4 through an inner ring rotary type outer ring sleeving check ring fastening bolt 8-6, the inner ring rotary type bearing outer ring sleeving check ring 8-5 is provided with a boss with steps for axially positioning an outer ring of the inner ring rotary type test bearing 8-2 and is locked and fixed through an inner ring rotary type outer ring sleeving check ring fastening bolt 8-6; the sensor mounting assembly body 8-8 is mounted on the inner ring rotary bearing outer sleeve 8-4;

the left side of the inner ring rotary inner ring rotating shaft 8-1 is provided with an inner ring rotary installation conical surface 8-1-1 which is matched with the outer conical surface of the dynamic and static pressure main shaft device 4, and the right side of the inner ring rotary inner ring rotating shaft 8-1 is provided with an inner ring rotary thimble conical surface 8-1-2 which is matched with a thimble positioning part in the axial overturning loading part 7;

the right side of the inner ring rotary bearing outer sleeve (8-4) is provided with an inner ring rotary axial loading arc surface (8-4-1) which is matched with an axial loading part in the axial overturning loading part (7), and when the inner ring rotary test bearing (8-2) is subjected to overturning loading and axial loading simultaneously, the axial loading part can generate micro sliding on the inner ring rotary axial loading arc surface (8-4-1) to prevent the axial loading part from bearing the overturning load; an inner ring rotary axial positioning hole (8-4-2) is formed in the upper portion of an inner ring rotary axial loading arc surface (8-4-1) on the right side of an inner ring rotary bearing outer sleeve (8-4) and can be used for axially positioning an axial loading portion, an inner ring rotary radial loading seat (8-4-3) is arranged on the outer side of the cylindrical surface of the inner ring rotary bearing outer sleeve (8-4) and can be matched with a radial loading device (5) to complete loading of radial loads of an inner ring rotary testing bearing (8-2).

The working principle of the utility model is as follows:

firstly, according to the actual requirement of the tested bearing, a test scheme of adopting an internal rotation type or an outer ring rotation type is selected, namely a bearing installation tool 6 or an inner ring rotation type test tool 8 is selected. And then, a continuous rotation test or a swing test of a certain angle range is selected, namely, whether the main driving motor 2-7 in the driving adjustment part 2 or the swing cylinder 3-5 in the power source switching device 3 works is selected. The loading load of the test bearing, i.e. the application of axial, radial or overturning loads to the test bearing, or a combination of the three loads, is further selected. After the requirements are determined, the test bearing can be assembled on the test tool, then the test bearing is installed on the hybrid spindle device 4, then the corresponding power device is started, corresponding load is loaded, the bearing service life test can be carried out, and finally, whether the tested bearing breaks down or not can be judged according to analysis of the collected vibration signals.

The above-described embodiments are merely exemplary of the present invention and are not intended to limit the embodiments of the present invention, and those skilled in the art can make variations or changes in other forms based on the above description without exhaustive enumeration or enumeration of all embodiments, and any modifications, equivalent substitutions, improvements, etc., that fall within the spirit and scope of the present invention are intended to be encompassed by the present claims.

Claims

1. A multi-function bearing testing machine comprising: base (1), drive adjustment part (2), power supply auto-change over device (3), hybrid spindle unit (4), radial loading device (5), bearing installation frock (6) and axial overturning loading part (7), its characterized in that: the dynamic and static pressure main shaft device is characterized in that the driving adjusting part (2) is arranged on one side of the base (1) and is fixed on a T-shaped groove (1-1-2) formed in the base (1) by adopting a T-shaped bolt, the power source switching device (3) and the dynamic and static pressure main shaft device (4) are respectively arranged on a large box body (1-4) of the base (1), the power source switching device (3) is respectively connected with the driving adjusting part (2) and the dynamic and static pressure main shaft device (4) by adopting a coupler, a torque sensor is arranged between the power source switching device (3) and the dynamic and static pressure main shaft device (4), the dynamic and static pressure main shaft device (4) is connected with a bearing mounting tool (6) by adopting a locking bolt, the bearing mounting tool (6) is arranged among the dynamic and static pressure main shaft device (4), the radial loading device (5) and the axial, the radial loading device (5) is arranged on one side of the bearing installation tool (6) and connected through a locking bolt, the radial loading device (5) is fixed in a T-shaped groove (1-1-2) formed in the base (1) through a T-shaped bolt, and the axial overturning loading part (7) is arranged on one side of the bearing installation tool (6) and locked on the base (1) through the T-shaped bolt.

2. The multi-functional bearing testing machine of claim 1, characterized in that: the base (1) comprises: the steel box comprises a bottom plate (1-1), a main guide rail (1-2), an auxiliary guide rail (1-3), a large box body (1-4), a small box body cover (1-5) and a main box body cover (1-6), wherein an oil conveying groove (1-1-1), a T-shaped groove (1-1-2), a foundation bolt groove (1-1-3) and hoisting bolt holes (1-1-4) are arranged above the bottom plate (1-1), the oil conveying groove (1-1-1) is arranged on the periphery of the bottom plate (1-1), the T-shaped groove (1-1-2) is distributed at equal intervals along the upper surface of the bottom plate (1-1), the foundation bolt grooves (1-1-3) are arranged on the side surface of the bottom plate (1-1) and are uniformly distributed, the hoisting bolt holes (1-1-4) are arranged on the two side surfaces of the bottom plate (1-1) along the length direction, two are arranged on the left side face and the right side face respectively; the main guide rail (1-2) and the auxiliary guide rail (1-3) are respectively fixed on the bottom plate (1-1) through locking bolts, the main guide rail (1-2) can provide a uniform positioning reference for the driving adjusting part (2), the large box body (1-4) and the axial overturning loading part (7), and the auxiliary guide rail (1-3) can provide a high-precision positioning reference for the radial loading device (5); the large box body (1-4) is fixed on a T-shaped groove (1-1-2) on a bottom plate (1-1) through a T-shaped locking bolt, a small box body cover (1-5) and a main box body cover (1-6) are arranged above the large box body (1-4), an oil return groove of a dynamic and static pressure main shaft device (4) is arranged in the large box body (1-4), the front half part of the large box body (1-4) is used for installing a power source switching device (3), and the rear half part of the large box body (1-4) is used for installing the dynamic and static pressure main shaft device (4).

3. The multi-functional bearing testing machine of claim 1, characterized in that: the drive adjusting portion (2) includes: a main drive handle adjusting support plate (2-1), a main drive handle bearing seat (2-2), a main drive handle (2-3), a main drive displacement adjusting screw rod (2-4), a main drive motor mounting seat (2-5), a main drive motor mounting seat locking bolt (2-6) and a main drive motor (2-7), wherein the main drive handle adjusting support plate (2-1) is fixed on the side surface of a bottom plate (1-1) through a bolt, the main drive handle bearing seat (2-2) is arranged on the main drive handle adjusting support plate (2-1) and is used for supporting the main drive displacement adjusting screw rod (2-4), one end of the main drive displacement adjusting screw rod (2-4) is connected with the main drive handle (2-3) through a square shaft, and the other end is connected with the main drive motor mounting seat (2-5) through screw rod threads, the main driving motor mounting seat locking bolt (2-6) is used for locking the main driving motor mounting seat (2-5) on the bottom plate (1-1), the main driving motor (2-7) is fixed on the main driving motor mounting seat (2-5) through a bolt, when the main driving motor mounting seat locking bolt (2-6) is loosened, the mounting position of the main driving motor (2-7) can be adjusted by rotating the main driving handle (2-3), and then the main driving motor (2-7) is locked and fixed through the main driving motor mounting seat locking bolt (2-6).

4. The multi-functional bearing testing machine of claim 1, characterized in that: the power source switching device (3) includes: the device comprises a gear shaft (3-1), a transmission assembly upper left fixing gland (3-2), a transmission assembly upper right fixing gland (3-3), a swing cylinder mounting frame (3-4), a swing cylinder (3-5), a transition gear (3-6), a transition wheel support (3-7), a transition gear bearing (3-8), a transition gear shaft (3-9), a driving gear (3-10), a swing cylinder mounting plate (3-11), a transition wheel rotating shaft (3-12), a transition wheel rotating support bearing (3-13), a transition wheel support fixing screw (3-14), a rotary encoder (3-15), a positioning pin (3-16), a transition wheel support handle (3-17), a left bearing bracket (3-18), a left end cover (3-19), A left gear shaft support bearing (3-20), a transmission shaft support shell (3-21), a right end cover (3-22), a right bearing bracket (3-23) and a right gear shaft support bearing (3-24), wherein the gear shaft (3-1) is connected with an output shaft of a main drive motor (2-7) through a coupling, the gear shaft (3-1) is arranged on the transmission shaft support shell (3-21) through the left bearing bracket (3-18), the left gear shaft support bearing (3-20), the right bearing bracket (3-23) and the right gear shaft support bearing (3-24) on the left side and the right side, the left side of the transmission shaft support shell (3-21) is fixed on the upper left fixing gland (3-2) of the transmission assembly through bolts, the right end is fixed on the upper right fixing gland (3-3) of the transmission assembly through bolts, the left gear shaft support bearing (3-20) is sealed and positioned by a left end cover (3-19), the right gear shaft support bearing (3-24) is sealed and positioned by a right end cover (3-22), a gear is arranged in the middle of the gear shaft (3-1) and used for power transmission of the swing cylinder (3-5), and a gear meshing gap with a certain width is arranged on the transmission shaft support shell (3-21); the swing cylinder mounting rack (3-4) is fixed on the large box body (1-4) through a locking bolt, the swing cylinder (3-5) is mounted on the swing cylinder mounting plate (3-11), the swing cylinder mounting plate (3-11) is locked on the swing cylinder mounting rack (3-4) through a bolt, the rotary encoder (3-15) is fixed at the tail of the swing cylinder (3-5) and used for measuring the swing angle of the swing cylinder (3-5), and the driving gear (3-10) is fixed on an output shaft of the swing cylinder (3-5); the transition gear (3-6) is arranged on a transition wheel bracket (3-7) through a transition gear shaft (3-9) and a transition gear bearing (3-8), the transition gear (3-6) can rotate along the axial direction of the transition gear shaft (3-9), the transition gear (3-6) can be meshed with the driving gear (3-10) and the gear shaft (3-1) so as to transmit the motion and the torque of the swing cylinder (3-5) to the gear shaft (3-1), a transition wheel rotating shaft (3-12) is fixed on a swing cylinder mounting bracket (3-4), the transition wheel bracket (3-7) can rotate along the axial direction of the transition wheel rotating shaft (3-12) under the supporting action of a transition wheel rotating support bearing (3-13), an arc guide rail groove is arranged above the transition wheel bracket (3-7), the transition wheel bracket fixing screw rods (3-14) are arranged in the arc-shaped guide rail grooves and fixed on the swing cylinder mounting rack (3-4), the transition wheel brackets (3-7) can be locked on the swing cylinder mounting rack (3-4) through locking nuts on the transition wheel bracket fixing screw rods (3-14), positioning holes for the transition gears (3-6) to be meshed in working are arranged above the transition wheel brackets (3-7), the transition wheel brackets (3-7) are matched with the positioning holes arranged above the transition wheel brackets (3-7) through positioning pins (3-16) arranged on the backs of the swing cylinder mounting racks (3-4) to accurately position the transition gears (3-6) in meshing, and transition wheel bracket handles (3-17) are fixed on the transition wheel brackets (3-7) through threaded connection, is used for manually switching the power source of the swinging cylinder (3-5).

5. The multi-functional bearing testing machine of claim 1, characterized in that: the hybrid spindle device (4) comprises: the spindle comprises a spindle outer sleeve (4-1), a spindle (4-2), a rear bearing bush (4-3), a spindle rear stop ring (4-4), a spindle fastening nut (4-5), a spindle outer ring flange (4-6), a spindle waterproof ring (4-7), a spindle limiting pin (4-8), a front bearing bush (4-9), a spindle transmission flange (4-10), a spindle rear end cover (4-11) and a middle bearing bush (4-12), wherein the rear bearing bush (4-3), the middle bearing bush (4-12) and the front bearing bush (4-9) are respectively arranged in an inner cavity of the spindle outer sleeve (4-1), the spindle (4-2) penetrates through the middle of the three bearing bushes, and the rear bearing bush (4-3) is axially positioned through the spindle rear stop ring (4-4), a main shaft fastening nut (4-5) is adopted for locking, and a main shaft rear end cover (4-11) is arranged at the tail part of a main shaft outer sleeve (4-1) and plays a role of oil sealing; the middle bearing bushes (4-12) and the front bearing bushes (4-9) are axially positioned through the inner step surface of the spindle outer sleeve (4-1), the spindle outer ring flange (4-6) is installed on the spindle outer sleeve (4-1) and plays a role of oil sealing, the spindle waterproof ring (4-7) is installed on the spindle outer ring flange (4-6) and prevents external dust from entering, the spindle transmission flange (4-10) is installed on the front end surface of the spindle (4-2), and the spindle limiting pin (4-8) is installed on the end surface of the spindle transmission flange (4-10) and plays a role of positioning.

6. The multi-functional bearing testing machine of claim 1, characterized in that: the radial loading device (5) comprises: the radial loading device comprises a radial loading base (5-1), a radial loading limiting column (5-2), a radial loading cylinder mounting seat (5-3), a radial loading cylinder (5-4), a radial loading locking bolt (5-5), a radial loading supporting seat (5-6), a radial loading supporting seat locking bolt (5-7) and a radial loading head (5-8), wherein the radial loading limiting column (5-2) is arranged at the tail part of the radial loading base (5-1) and used for transversely limiting the radial loading cylinder mounting seat (5-3), the radial loading cylinder mounting seat (5-3) is matched with the radial loading base (5-1) through a dovetail groove, the radial loading cylinder (5-4) is fixed on the radial loading cylinder mounting seat (5-3) through a bolt, and the radial loading cylinder mounting seat (5-3) is properly adjusted, the locking bolt (5-5) can be locked and fixed on the T-shaped groove (1-1-2) of the bottom plate (1-1) through radial loading; the radial loading supporting seat (5-6) is arranged at the front end of the radial loading base (5-1) through a dovetail groove and used for supporting a radial loading head (5-8), one end of the radial loading head (5-8) is connected with an output rod of a radial loading cylinder (5-4), the other end of the radial loading head is connected with a bearing mounting tool (6) through a bolt, tension and compression radial load can be applied to the outer ring rotary type testing bearing (6-2), and after the radial loading supporting seat (5-6) is properly adjusted, the radial loading supporting seat (5-6) can be adjusted and locked and fixed on a T-shaped groove (1-1-2) of the bottom plate (1-1) through a radial loading supporting seat locking bolt (5-7); u-shaped grooves are formed in the upper parts of the radial loading base (5-1), the radial loading cylinder mounting seat (5-3) and the radial loading supporting seat (5-6) so as to adjust the sliding position conveniently.

7. The multi-functional bearing testing machine of claim 1, characterized in that: bearing installation frock (6) be an outer lane rotation test fixture, include: the device comprises an outer ring rotary type connecting flange plate (6-1), an outer ring rotary type test bearing (6-2), an outer ring rotary type bearing inner ring retaining ring (6-3), an outer ring rotary type bearing mounting plate (6-4), an outer ring rotary type bearing outer ring retaining ring (6-5), an outer ring rotary type bearing outer sleeve (6-6), an outer ring rotary type outer ring retaining ring fastening bolt (6-7), an outer ring rotary type inner ring retaining ring fastening bolt (6-8), an outer ring rotary type buckle nut (6-9), an outer ring rotary type overturning loading connecting piece (6-10) and an outer ring rotary type locking bolt (6-11); the outer ring rotary type connecting flange plate (6-1) is arranged on the left side of the bearing mounting tool (6) and is connected with the hybrid main shaft device (4) through an outer ring rotary type tool locking bolt hole (6-1-3), the right end of the outer ring rotary type connecting flange plate (6-1) is connected with an outer ring rotary type bearing outer sleeve (6-6) through an outer ring rotary type locking bolt (6-11), and the outer ring rotary type connecting flange plate (6-1) and the outer ring rotary type bearing outer sleeve (6-6) are in positioning fit through an outer ring rotary type bearing outer sleeve positioning conical surface (6-1-2); the inner ring of the outer ring rotary type test bearing (6-2) is arranged on a shaft collar in an outer ring rotary type bearing mounting disc (6-4), the inner ring of the outer ring rotary type test bearing (6-2) is axially fixed through an inner ring retaining ring (6-3) of the outer ring rotary type bearing, the inner ring retaining ring (6-3) of the outer ring rotary type bearing is fixed on the outer ring rotary type bearing mounting disc (6-4) through an outer ring rotary type inner ring retaining ring fastening bolt (6-8), the outer ring of the outer ring rotary type test bearing (6-2) is arranged on an outer ring rotary type bearing outer sleeve (6-6), the outer ring of the outer ring rotary type test bearing (6-2) is axially positioned through an outer ring rotary type bearing outer ring retaining ring (6-5), and the outer ring rotary type outer ring retaining ring (6-5) of the outer ring rotary type test bearing is fixed on -6); the outer ring rotary type overturning loading connecting piece (6-10) is arranged below the outer ring rotary type bearing mounting disc (6-4), the inner surface and the outer surface of the outer ring rotary type overturning loading connecting piece (6-10) are respectively provided with a thread, the inner thread of the outer ring rotary type overturning loading connecting piece (6-10) is connected with an overturning loading part in the axial overturning loading part (7) and used for applying overturning load to the inner ring of the outer ring rotary type testing bearing (6-2), and the outer thread of the outer ring rotary type overturning loading connecting piece (6-10) is connected with an outer ring rotary type buckle nut (6-9) and used for locking the overturning loading part; the left end face of the outer ring rotary type connecting flange plate (6-1) is provided with an outer ring rotary type flange positioning conical surface (6-1-1) and an outer ring rotary type tool locking bolt hole (6-1-3) which are connected with the hybrid spindle device (4), and the right side of the outer ring rotary type connecting flange plate (6-1) is provided with an outer ring rotary type bearing outer sleeve positioning conical surface (6-1-2) which is matched with the outer ring rotary type bearing outer sleeve (6-6);

the right end face of the outer ring rotary bearing mounting disc (6-4) is provided with an outer ring rotary axial loading arc face (6-4-1) matched with an axial loading part in the axial overturning loading part (7), the outer ring rotary axial loading arc face (6-4-1) can be matched with the axial loading part, when the overturning load and the axial load are simultaneously applied to the outer ring rotary test bearing (6-2), the axial loading part in the axial overturning loading part (7) can generate micro sliding on the outer ring rotary axial loading arc face (6-4-1), and an axial loading rod (7-27) of the axial loading part is prevented from bearing the overturning load; an outer ring rotary axial positioning hole (6-4-2) is arranged above an outer ring rotary axial loading arc surface (6-4-1) on the right side of the outer ring rotary bearing mounting disc (6-4) and can be used for positioning an axial loading part; an outer ring rotary thimble hole (6-4-3) which is matched with the thimble assembly body (7-26) is arranged in the middle of the right side surface of the outer ring rotary bearing mounting disc (6-4), and the outer ring rotary bearing mounting disc (6-4) is matched with the thimble assembly body (7-26) to ensure the rotation precision of the outer ring rotary test bearing (6-2); an outer ring rotary radial loading seat (6-4-4) is arranged on one side of the cylindrical surface of the outer ring rotary bearing mounting disc (6-4) and can be matched with a radial loading device (5) to finish the application of radial load on the outer ring rotary test bearing (6-2); the outer ring rotary bearing mounting disc (6-4) is provided with locking bolt process through holes (6-4-5) for locking outer ring rotary locking bolts (6-11).

8. The multi-functional bearing testing machine of claim 1, characterized in that: the axial overturn loading part (7) comprises: the loading device comprises an axial loading part, an overturning loading part, a thimble positioning part and a loading base (7-1), wherein the axial loading part is positioned on the upper side of the overturning loading part and is used for applying an axial load to an outer ring rotary type test bearing (6-2); the overturning loading part is arranged at the middle position and can apply overturning loads in two directions of tension and compression to the outer ring rotary type test bearing (6-2); the thimble positioning part is arranged at the lower side of the overturning loading part and used for supporting a bearing installation tool (6) so as to increase the axial rotation rigidity of the axial rotation part; the loading base (7-1) is arranged above the bottom plate (1-1) and used for installing a loading part, an overturning loading part and an ejector pin positioning part, and a loading base locking bolt (7-9) arranged above the loading base (7-1) is a T-shaped bolt and can be matched with a T-shaped groove (1-1-2) arranged above the bottom plate (1-1) to fix the loading base (7-1); a dovetail groove is arranged above the loading base (7-1) and used for supporting and guiding the axial loading part, the overturning loading part and the thimble positioning part;

the axial loading part comprises: the device comprises an axial loading cylinder (7-6), an axial loading seat (7-3), an axial loading seat locking bolt (7-10), an axial pressure sensor (7-11), a rear push disk (7-13), an axial loading rod wear-resistant sleeve (7-14), a guide seat (7-15), an axial loading rod (7-27), a bidirectional loading connecting bolt (7-28), a guide column (7-29) and a front push plate (7-30), wherein the axial loading cylinder (7-6) is installed on the axial loading seat (7-3) through the locking bolt, the axial loading seat (7-3) is fixed on a loading base (7-1) through the axial loading seat locking bolt (7-10), the axial loading seat (7-3) is provided with a dovetail groove matched with the loading base (7-1), an output rod of an axial loading cylinder (7-6) is connected with an axial pressure sensor (7-11) arranged on a rear push disc (7-13), one end of an axial loading rod (7-27) is connected with the rear push disc (7-13), the other end of the axial loading rod is connected with a front push plate (7-30), the axial loading rod (7-27) slides back and forth through an axial loading rod wear-resistant sleeve (7-14) arranged in a guide seat (7-15), a bidirectional loading connecting bolt (7-28) is arranged on the front push plate (7-30) and is connected with an outer ring rotary type bearing mounting disc (6-4) and can apply tension and compression bidirectional loads to an outer ring rotary type test bearing (6-2), a guide column (7-29) is arranged on the front push plate (7-30) and is matched with an outer ring rotary type axial positioning hole (6-4-2) on a bearing mounting tool (6) to advance The axial positioning is carried out, the contact surface of the front push plate (7-30) and the bearing installation tool (6) is an arc surface, so that when an axial load and an overturning load are simultaneously applied to the bearing installation tool (6), the axial loading part can bear part of the overturning load, and only the outer ring rotary type test bearing (6-2) can bear the axial load and the overturning load;

the overturning loading part comprises: the overturning loading device comprises an overturning loading cylinder (7-5), an overturning pressure sensor (7-16), a connecting shaft sleeve (7-17), an overturning loading shaft (7-18), an overturning wear-resistant sleeve (7-19) and an overturning loading sleeve (7-20), wherein the overturning loading cylinder (7-5) is fixed on an axial loading seat (7-3) through a locking bolt, an expansion rod of the overturning loading cylinder (7-5) is connected with the overturning pressure sensor (7-16) arranged on the connecting shaft sleeve (7-17), one end of the overturning loading shaft (7-18) is connected with the connecting shaft sleeve (7-17), the other end of the overturning loading shaft is connected with an outer ring rotary overturning loading connecting piece (6-10) in a bearing installation tool (6) to apply the overturning load in a pulling and pressing manner in an interference manner in two directions, the overturning loading sleeve (7-20) is arranged in a guide seat (7-15) through matching, two ends of each overturning loading sleeve (7-20) are respectively provided with a set of overturning wear-resistant sleeve (7-19), and the overturning wear-resistant sleeves (7-19) are matched with the overturning loading shafts (7-18) so that the overturning loading shafts (7-18) can freely move back and forth;

thimble location portion include: a forward and backward hand wheel (7-4), a hand wheel mounting seat (7-2), a screw rod supporting bearing (7-7), a hand wheel mounting seat locking bolt (7-8), a feed screw rod (7-12), a screw rod sleeve (7-21), a guide seat (7-15), a thimble sleeve (7-22), a thimble assembly body (7-26), a guide seat locking bolt (7-25), a dovetail bottom plate (7-23) and a guide seat connecting bolt (7-24), wherein the hand wheel mounting seat (7-2) is fixed on a loading base (7-1) through the hand wheel mounting seat locking bolt (7-8), the hand wheel mounting seat (7-2) is internally provided with the screw rod supporting bearing (7-7) for supporting the feed screw rod (7-12), one end of the feed screw rod (7-12) is connected with the forward and backward hand wheel (7-4), the other end of the guide rod is connected with a screw rod sleeve (7-21), the screw rod sleeve (7-21) is installed on a guide seat (7-15) and can drive the guide seat (7-15) to move back and forth by rotating a forward and backward hand wheel (7-4), an ejector pin assembly body (7-26) is installed on the guide seat (7-15) through an ejector pin sleeve (7-22) and used for axial support of a bearing installation tool (6), the guide seat (7-15) is locked on a dovetail bottom plate (7-23) through a guide seat connecting bolt (7-24), and the dovetail bottom plate (7-23) and the guide seat (7-15) are fixed on a loading base (7-1) as a whole through a guide seat locking bolt (7-25).

9. The multi-functional bearing testing machine of claim 1, characterized in that: bearing installation frock (6) be an inner circle rotation type test fixture (8), include: the device comprises an inner ring rotary type inner ring rotating shaft (8-1), an inner ring rotary type test bearing (8-2), an inner ring rotary type bearing inner ring sleeve check ring (8-3), an inner ring rotary type bearing outer sleeve (8-4), an inner ring rotary type bearing outer ring sleeve check ring (8-5), an inner ring rotary type outer ring sleeve check ring fastening bolt (8-6), an inner ring rotary type inner ring sleeve check ring fastening bolt (8-7) and a sensor installation assembly body (8-8), wherein the inner ring rotary type inner ring rotating shaft (8-1) is arranged on the left side of an inner ring rotary type test tool (8) and is mutually fixed with a dynamic and static pressure main shaft device (4) through a bolt hole in the end face of the left side, so that the whole inner ring; the inner ring rotary type test bearing (8-2) is arranged at the position of a journal of the inner ring rotary type inner ring rotating shaft (8-1), and the width of the journal is slightly smaller than that of the inner ring rotary type test bearing (8-2); the inner ring rotary type bearing inner ring retainer ring (8-3) is fixed on the inner ring rotary type inner ring rotating shaft (8-1) through an inner ring rotary type inner ring retainer ring fastening bolt (8-7) and is used for axially positioning the inner ring rotary type test bearing (8-2); the inner ring rotary bearing outer sleeve (8-4) is arranged on the right side of the ring rotary testing tool (8) and is matched with the outer ring of the inner ring rotary testing bearing (8-2); the inner ring rotary type bearing outer ring retaining ring (8-5) is arranged between an inner ring rotary type inner ring rotating shaft (8-1) and an inner ring rotary type bearing outer ring (8-4), and is connected with the inner ring rotary type bearing outer ring (8-4) through an inner ring rotary type outer ring retaining ring fastening bolt (8-6), the inner ring rotary type bearing outer ring retaining ring (8-5) is provided with a step boss for axially positioning the outer ring of the inner ring rotary type test bearing (8-2), and is locked and fixed through an inner ring rotary type outer ring retaining ring fastening bolt (8-6); the sensor mounting assembly body (8-8) is mounted on the inner ring rotary bearing outer sleeve (8-4);

an inner ring rotary type mounting conical surface (8-1-1) is arranged on the left side of the inner ring rotary type inner ring rotating shaft (8-1) and is matched with an outer conical surface of the dynamic and static pressure main shaft device (4), and an inner ring rotary type thimble conical surface (8-1-2) is arranged on the right side of the inner ring rotary type inner ring rotating shaft (8-1) and is matched with a thimble positioning part in the axial overturning loading part (7);