CN105157982B - Lower coupling axial direction and radial compound loading device and the loading method of rolling bearing - Google Patents
Lower coupling axial direction and radial compound loading device and the loading method of rolling bearing Download PDFInfo
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- CN105157982B CN105157982B CN201510341830.5A CN201510341830A CN105157982B CN 105157982 B CN105157982 B CN 105157982B CN 201510341830 A CN201510341830 A CN 201510341830A CN 105157982 B CN105157982 B CN 105157982B
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Abstract
Lower coupling axial direction and radial compound loading device and the loading method of rolling bearing, are related to the load domains of bearing test.When applying axial load and radial load to subject bearing while the present invention is to solve now, side-friction is big between bearing and load contact face after loading, loading device lateral stiffness is big, the movement of friction power restriction other direction loading head between the loading head and test tool in one direction, and then have influence on the application of other direction load, prevent the load in one or two direction causes the problem of load loading is inaccurate from being completely loaded into subject bearing.The present invention transfers small fuel tank in bearing, hydraulic pump extracts the oil in small fuel tank, is finally injected into pressure oil inlet, and fluid pressure bearing capacity is produced after fluid pressure throttle orifice, hydraulic pressure Moving plate and hydraulic static disk, the effect of reduction different directions load coupling are connected by elastic connection sleeve.It is available in the experimental rig for needing to apply orthogonal both direction load simultaneously.
Description
Technical field
The present invention relates to the load charger and loading method to bearing.Belong to the load domains of bearing test load.
Background technology
Rotor test technology is the important content of mechanical system experiment, is rotor-support-foundation system and the examination of spring bearing life-span, property
It can examine, manufacture and design the premise of Verification and reliability application.Needed sometimes to rotor-support-foundation system or support member in process of the test
Apply axially and radially load.Rolling bearing is as the support member of rotor-support-foundation system, and its experiment is typical rotor test.Bearing
Experiment be usually bearing tester carry out, when bearing tester is tested it is load simulated be bearing test crucial working condition it
One, whether loading accurately directly affects the confidence level of result of the test.Because bearing has clearance, and lower bearing is acted in load
There is juxtaposition metamorphose, loading procedure middle (center) bearing exists in loading direction to be deformed or mobile a little.Conventional loading method is loading head
Directly contacted with test tool, loading head and the connection of loader body lateral stiffness, as shown in Figure 1.When simultaneously to subject bearing
When applying axial load and radial load, side-friction is larger between loading the latter two contact surfaces, and loading device is laterally firm
Degree is big, and the frictional force between the loading head and test tool in a direction necessarily limits the movement of other direction loading head, and then
Have influence on the application of other direction load so that the load in one or two direction can not be completely loaded into subject bearing, cause
Work condition analogue is inaccurate, directly influences the accuracy of result of the test.
The content of the invention
When applying axial load and radial load to subject bearing while the present invention is to solve now, rear axle is loaded
Hold between load contact face side-friction big, loading device lateral stiffness is big, the loading head and test tool in a direction it
Between friction power restriction other direction loading head movement, and then have influence on the application of other direction load so that one or two
The load in individual direction can not be completely loaded into subject bearing, cause the problem of load loading is inaccurate.Rolling bearing is now provided
Lower coupling axial direction and radial compound loading device and loading method.
Lower coupling axial direction and the radial compound loading device of rolling bearing, it includes hydraulic system and two loading heads,
Hydraulic system connects two loading heads simultaneously, and hydraulic system provides pressure oil for loading head, and a loading head is used for
Between the loader and rolling bearing test tool of radial direction, another loading head be used for installed in axial direction loader and
Between rolling bearing test tool,
Hydraulic system includes small fuel tank, cooler, oil filter, hydraulic pump, No. two oil filters, overflow valve, two
Number overflow valve, a choke valve, No. two choke valves, a check valve and No. two check valves,
Small fuel tank is located at the bottom of the oil return opening of rolling bearing, for accessing the bearing oil flowed out from bearing arrangement,
The oil inlet end of hydraulic pump sequentially passes through a cooler and oil filter is connected with small fuel tank, the oil outlet end of hydraulic pump and No. two filters
One end connection of oily device, the other end of No. two oil filters is connected with one end and No. two overflow valve one end of an overflow valve simultaneously,
The other end of a number overflow valve is connected with one end of a choke valve, the other end of No. two overflow valves and one end of No. two choke valves
Connection, the other end of a choke valve is connected with one end of a check valve, the other end and No. two check valves of No. two choke valves
One end connection,
Two loading header structures are identical, and each loading head includes static pressure disk, static pressure Moving plate, elastic connection sleeve and pressure oil
Import,
The other end of number check valve and the other end of No. two check valves respectively with a pressure oil inlet communication,
Fluid pressure throttle orifice is provided with static pressure disk, one end of pressure oil inlet and fluid pressure throttle orifice connects
It is logical,
There is an annular groove on the surface of static pressure disk front end using the center of static pressure disk as the center of circle is peripherally disposed, the annular groove with
The other end connection of fluid pressure throttle orifice,
Connected between static pressure disk and static pressure Moving plate by elastic connection sleeve,
The front end of static pressure Moving plate is ball head structure, and ball head structure is used to withstand in the ball-and-socket of rolling bearing,
Pressure oil inlet is connected with fluid pressure throttle orifice, and pressure oil flows through fluid pressure throttle orifice through pressure oil import,
Carrying oil film is formed between static pressure disk and static pressure Moving plate, to realize that the fluid friction between static pressure disk and static pressure Moving plate connects
Connect.
The loading method axially realized according to the lower coupling of rolling bearing with radial compound loading device, it is included in following
Hold：
The lubricating oil flowed out at rolling bearing is accessed using small fuel tank, static-pressure system hydraulic pump passes through cooler cooling and one
The lubricating oil in small fuel tank is extracted after the filtering of number filter, then after No. two filters essence filterings, through an overflow valve and No. one
Choke valve carries out pressure regulation, and the pressure oil inlet on a loading head is then injected into by a check valve, meanwhile, through two
Number overflow valve and No. two choke valves are carried out after pressure regulations, and the pressure oil being injected into through No. two check valves on another loading head enters
Mouthful, lubricating oil respectively enters each fluid pressure throttle orifice by two pressure oil inlets, makes the static pressure disk of each loading head
Carrying oil film is formed between static pressure Moving plate, lower coupling axial direction and the radial compound loading method of rolling bearing is realized.
Beneficial effects of the present invention are：When applying axle, radial load simultaneously to rolling bearing, a loading head is arranged on
Between the loader and rolling bearing test tool of radial direction, another loading head is arranged on loader and the rolling bearing examination of axial direction
Test between frock, pressure is provided to the pressure oil inlet of two loading heads simultaneously by a hydraulic pump using a hydraulic system
Oil, different branch is by different choke valves and overflow valve regulation, to ensure pressure that different branch (loading head) is needed,
In addition, the loading head of the loading device of the present invention is constituted using static pressure disk and static pressure Moving plate, static pressure disk and quiet
Press using elastic connection sleeve connection between disk, axially and transversely rigidity is low for elastic connection sleeve, it is to avoid test load is influenceed, subtracted
Influencing each other between small or even elimination different directions loading force.
In addition, static pressure Moving plate front end is ball head structure, ball head structure withstood in the ball-and-socket of rolling bearing, bulb and ball-and-socket it
Between scribble lubricant.Lubricant is scribbled between bulb and ball-and-socket, bulb can be rotated in ball-and-socket so that hydraulic pressure support face can be with
Automatic capturing, it is to avoid unbalance loading.
Static pressure disk is fixed on loading device, and front end is fluid pressure throttle orifice, when by hydraulic system to pressure oil
It is passed through in import after pressure oil, pressure oil flows through fluid pressure throttle orifice, carrying oil film is formed between static pressure disk and Moving plate,
Quiet disk and Moving plate are separated by oil film, are fluid friction between two disks, side-friction is very in the range of the carrying of static pressure
It is small, realize the purpose of horizontal antifriction.
The hydraulic system oil liquid of apparatus of the present invention uses the lubricating oil of test bearing, from pumping bearing lubrication in experiment box body
Oil, for the support of hydraulic pressure static pressure, it is to avoid reveal the pollution to bearing oil using outer hydraulic oil filling；For grease lubricating bearing examination
Device is tested, apparatus of the present invention fluid pressure system sets independent hydraulic system, fluid is avoided by chamber isolation during structure design
Disclosure risk is on subject bearing influence.
Two disks are linked to be entirety by elastic connection sleeve, and the lateral stiffness of elastic connection sleeve is small, to the side-friction of device
It is small, and load is carried on rolling bearing using the loading head so that load loading is accurate, year-on-year existing load mode
More than 5 times of accuracy.
Brief description of the drawings
Fig. 1 is the loading device that loading head applies axial load and radial load to rolling bearing；
Fig. 2 is the lower coupling of the rolling bearing described in embodiment one adding axially and in radial compound loading device
The structural scheme of mechanism of carrier head；
Fig. 3 is the lower coupling axial direction of the rolling bearing described in embodiment one and static pressure in radial compound loading device
Quiet disk carries end face structural representation；
Fig. 4 is the lower coupling axial direction of the rolling bearing described in embodiment one and hydraulic pressure in radial compound loading device
The structural representation of system.
Embodiment
Embodiment one：Reference picture 2 illustrates present embodiment, the axis of rolling described in present embodiment to Fig. 4
Lower coupling axial direction and the radial compound loading device held, it includes hydraulic system and two loading heads,
Hydraulic system connects two loading heads simultaneously, and hydraulic system provides pressure oil for loading head, and a loading head is used for
Between the loader and rolling bearing test tool of radial direction, another loading head be used for installed in axial direction loader and
Between rolling bearing test tool,
Hydraulic system includes small fuel tank 1, cooler 2, oil filter 3, hydraulic pump 4, No. two oil filters 6, an overflows
Valve 7, No. two overflow valves 17, a choke valve 8, No. two choke valves 18, a check valve 9 and No. two check valves 19,
Small fuel tank 1 is located at the bottom of the oil return opening of rolling bearing, for accessing the bearing oil flowed out from bearing arrangement,
The oil inlet end of hydraulic pump 4 sequentially passes through a cooler 2 and oil filter 3 is connected with small fuel tank 1, the oil outlet end of hydraulic pump 4 with
One end connection of No. two oil filters 6, the other ends of No. two oil filters 6 one end simultaneously with overflow valve 7 and No. two overflow valves
17 one end are connected, and the other end of an overflow valve 7 connects with one end of a choke valve 8, the other end of No. two overflow valves 17 and
One end connection of No. two choke valves 18, the other end of a choke valve 8 is connected with one end of a check valve 9, No. two choke valves
18 other end is connected with one end of No. two check valves 19,
Two loading header structures are identical, and each loading head includes static pressure disk 11, static pressure Moving plate 12, the and of elastic connection sleeve 13
Pressure oil inlet 14,
The other end of number check valve 9 and the other end of No. two check valves 19 are connected with a pressure oil inlet 14 respectively,
Fluid pressure throttle orifice, one end of pressure oil inlet 14 and fluid pressure throttle orifice are provided with static pressure disk 11
Connection,
There are annular groove, the ring in the surface of the front end of static pressure disk 11 using the center of static pressure disk 11 as the center of circle is peripherally disposed
Groove is connected with the other end of fluid pressure throttle orifice,
Connected between static pressure disk 11 and static pressure Moving plate 12 by elastic connection sleeve 13,
The front end of static pressure Moving plate 12 is ball head structure, and ball head structure is used to withstand in the ball-and-socket of rolling bearing,
Pressure oil inlet 14 is connected with fluid pressure throttle orifice, and pressure oil flows through fluid pressure through pressure oil inlet 14 and throttled
Hole, forms carrying oil film, to realize between static pressure disk 11 and static pressure Moving plate 12 between static pressure disk 11 and static pressure Moving plate 12
Fluid friction connection.
In present embodiment, the present apparatus is loader and fluid pressure sliding bearing integrated morphology；Adopt loading device front end
Fluid pressure support technology is used, longitudinal high bearing capacity is laterally fluid friction, frictional force is low, and can laterally position；
In present embodiment, in order that the pressure distribution for obtaining static pressure loading end is uniform, on static pressure disk loading end, pass through
Each throttle orifice processes grading ring groove, as shown in Figure 3.
For oil lubrication rolling bearing, the pressure oil-source that pressure port needs is derived from the oil return system of rolling bearing.It is tested axle
Bearing lubrication oil is placed in rolling bearing bottom from after rolling bearing outflow and receives oily small fuel tank.
The device that the present invention is provided, which may apply to other, to be needed while applying the examination of orthogonal both direction load
In experiment device.If load is smaller, horizontal drag reduction can be realized using gas-static support on its general principles.
In present embodiment, loading device of the invention can be placed on other rigid loading device front ends, by other plus
Carry and offer loading force is provided.The hydraulic static disk of the loading device and other rigid loading devices can also be processed integral.
The size and charge oil pressure of hydraulic static disk can be calculated and adjusted according to the size of loading force, and loading force is bigger to be supplied
Oil pressure is bigger.
Embodiment two：Present embodiment is the lower coupling axial direction to the rolling bearing described in embodiment one
It is described further with radial compound loading device, in present embodiment, hydraulic system also includes a pressure gauge 5, No. two pressures
Power table 10 and No. three pressure gauges 20,
A number pressure gauge 5 is arranged on the oil-out pipeline of hydraulic pump 4, and No. two pressure gauges 10 are arranged on 14 oil inlet pipe
Lu Shang, No. three pressure gauges 20 are arranged on the pressure oil inlet 14-1 oil inlet pipeline of another loading head.
Embodiment three：Present embodiment is the lower coupling axial direction to the rolling bearing described in embodiment one
It is described further with radial compound loading device, in present embodiment, the ball head structure and the axis of rolling of the front end of static pressure Moving plate 12
There is lubricant between holding.
Embodiment four：Lower coupling axial direction and the radial direction of rolling bearing according to embodiment one or two
The loading method that Combined Loading device is realized, it includes herein below：
The lubricating oil flowed out at rolling bearing is accessed using small fuel tank 1, static-pressure system hydraulic pump 4 is cooled down by cooler 2
The lubricating oil in small fuel tank 1 is extracted after being filtered with a filter 3, then after No. two essence filterings of filter 6, through an overflow valve
7 and choke valve 8 carry out pressure regulation, the pressure oil inlet on a loading head is then injected into by a check valve 9
14, meanwhile, after carrying out pressure regulation through No. two overflow valves 17 and No. two choke valves 18, another is injected into through No. two check valves 19
Pressure oil inlet on loading head, lubricating oil respectively enters each fluid pressure throttle orifice by two pressure oil inlets, makes every
Between the static pressure disk 11 and static pressure Moving plate 12 of individual loading head formed carrying oil film, realize rolling bearing lower coupling axially with
Radial compound loading method.
Embodiment five：Present embodiment is the lower coupling axial direction to the rolling bearing described in embodiment four
The loading method realized with radial compound loading device is described further, in present embodiment, and it also includes herein below：
Gathered using a pressure gauge 5 and show the pressure of static-pressure system hydraulic pump 4,
Gathered using No. two pressure gauges 10 and show the pressure after being adjusted through an overflow valve 7 and a choke valve 8,
Gathered using No. three pressure gauges 20 and show the pressure after being adjusted through No. two overflow valves 17 and No. two choke valves 18.
Claims (5)
1. lower coupling axial direction and the radial compound loading device of rolling bearing, it is characterised in that it includes hydraulic system and two
Loading head,
Hydraulic system connects two loading heads simultaneously, and hydraulic system provides pressure oil for loading head, and a loading head is used to install
Between the loader and rolling bearing test tool of radial direction, another loading head is used for loader and rolling installed in axial direction
Between bearing test frock,
Hydraulic system includes small fuel tank (1), cooler (2), oil filter (3), hydraulic pump (4), No. two oil filters (6), one
Number overflow valve (7), No. two overflow valves (17), a choke valve (8), No. two choke valves (18), a check valve (9) and No. two lists
To valve (19),
Small fuel tank (1) is located at the bottom of the oil return opening of rolling bearing, for accessing the bearing oil flowed out at rolling bearing,
The oil inlet end of hydraulic pump (4) sequentially passes through cooler (2) and oil filter (3) connects with small fuel tank (1), hydraulic pump (4)
Oil outlet end connected with one end of No. two oil filters (6), the other ends of No. two oil filters (6) simultaneously with overflow valve (7)
One end is connected with No. two overflow valve (17) one end, and the other end of an overflow valve (7) is connected with one end of a choke valve (8),
The other end of No. two overflow valves (17) is connected with one end of No. two choke valves (18), the other end of choke valve (8) and No. one
One end connection of check valve (9), the other end of No. two choke valves (18) is connected with one end of No. two check valves (19),
Two loading header structures are identical, and each loading head includes static pressure disk (11), static pressure Moving plate (12), elastic connection sleeve (13)
With pressure oil inlet (14),
The other end of number check valve (9) and the other end of No. two check valves (19) respectively with a pressure oil inlet (14) even
It is logical,
Fluid pressure throttle orifice, one end of pressure oil inlet (14) and fluid pressure throttle orifice are provided with static pressure disk (11)
Connection,
There is an annular groove on the surface of static pressure disk (11) front end using the center of static pressure disk (11) as the center of circle is peripherally disposed, described
Annular groove is connected with the other end of fluid pressure throttle orifice,
Connected between static pressure disk (11) and static pressure Moving plate (12) by elastic connection sleeve (13),
The front end of static pressure Moving plate (12) is ball head structure, and ball head structure is used to withstand in the ball-and-socket of rolling bearing,
Pressure oil inlet (14) is connected with fluid pressure throttle orifice, and pressure oil flows through fluid pressure through pressure oil inlet (14) and throttled
Hole, forms carrying oil film, to realize static pressure disk (11) and static pressure Moving plate between static pressure disk (11) and static pressure Moving plate (12)
(12) the fluid friction connection between.
2. lower coupling axial direction and the radial compound loading device of rolling bearing according to claim 1, it is characterised in that liquid
Pressure system also includes a pressure gauge (5), No. two pressure gauges (10) and No. three pressure gauges (20),
A number pressure gauge (5) is arranged on the oil-out pipeline of hydraulic pump (4), and No. two pressure gauges (10) are arranged on a loading head
Pressure oil inlet (14) oil inlet pipeline on, No. three pressure gauges (20) are arranged on the pressure oil inlet of another loading head
On the oil inlet pipeline of (14-1).
3. lower coupling axial direction and the radial compound loading device of rolling bearing according to claim 1, it is characterised in that quiet
The ball head structure and roller bearing shop for pressing disk (12) front end have lubricant.
4. the loading that the lower coupling of rolling bearing according to claim 1 or 2 is axially realized with radial compound loading device
Method, it is characterised in that it includes herein below：
The lubricating oil flowed out at rolling bearing is accessed using small fuel tank (1), hydraulic pump (4) passes through cooler (2) cooling and No. one
The lubricating oil in small fuel tank (1) is extracted after filter (3) filtering, then after No. two filter (6) essence filterings, through an overflow valve
(7) pressure on a loading head then and choke valve (8) carries out pressure regulation, is injected into by a check valve (9)
Oil inlet (14), meanwhile, after carrying out pressure regulation through No. two overflow valves (17) and No. two choke valves (18), through No. two check valves
(19) the pressure oil inlet on another loading head is injected into, lubricating oil respectively enters each liquid by two pressure oil inlets
Static pressure throttle orifice, makes to form carrying oil film between the static pressure disk (11) of each loading head and static pressure Moving plate (12), realizes rolling
Lower coupling axial direction and the radial compound loading method of dynamic bearing.
5. the loading side that the lower coupling of rolling bearing according to claim 4 is axially realized with radial compound loading device
Method, it is characterised in that it also includes herein below：
The pressure of hydraulic pump (4) is gathered and shown using a pressure gauge (5),
Gathered using No. two pressure gauges (10) and show the pressure after an overflow valve (7) and choke valve (8) regulation,
Gathered using No. three pressure gauges (20) and show the pressure after No. two overflow valves (17) and No. two choke valve (18) regulations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510341830.5A CN105157982B (en) | 2015-06-18 | 2015-06-18 | Lower coupling axial direction and radial compound loading device and the loading method of rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510341830.5A CN105157982B (en) | 2015-06-18 | 2015-06-18 | Lower coupling axial direction and radial compound loading device and the loading method of rolling bearing |
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| Publication Number | Publication Date |
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| CN105157982A CN105157982A (en) | 2015-12-16 |
| CN105157982B true CN105157982B (en) | 2017-07-28 |
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| CN201510341830.5A Expired - Fee Related CN105157982B (en) | 2015-06-18 | 2015-06-18 | Lower coupling axial direction and radial compound loading device and the loading method of rolling bearing |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525675A (en) * | 2017-08-07 | 2017-12-29 | 湖南崇德工业科技有限公司 | Horizontal sliding bearing hydraulic system |
| CN109578351A (en) * | 2018-12-18 | 2019-04-05 | 燕山大学 | A kind of hydraulic power unit of magnetic liquid dual suspension bearing performance test hydraulic test bench |
| CN111426475B (en) * | 2020-05-06 | 2021-09-17 | 湖南汉能科技有限公司 | Main shaft bearing impact test platform |
| CN113049789B (en) * | 2021-03-18 | 2023-07-11 | 大连工业大学 | Rolling bearing lubricating oil flow and temperature characteristic test device and test method |
| CN113433298A (en) * | 2021-05-28 | 2021-09-24 | 浙江兆丰机电股份有限公司 | Bearing heat flow characteristic test device for drive axle and test method thereof |
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| CN102032988A (en) * | 2010-11-26 | 2011-04-27 | 西安交通大学 | Decoupling measurement method for dynamic rigidity of hydrodynamic thrust bearing |
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| JP3452010B2 (en) * | 2000-01-11 | 2003-09-29 | 日本精工株式会社 | Rotation accuracy measuring device for rolling bearings |
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|---|---|---|---|---|
| CN102032988A (en) * | 2010-11-26 | 2011-04-27 | 西安交通大学 | Decoupling measurement method for dynamic rigidity of hydrodynamic thrust bearing |
| CN102288410A (en) * | 2011-07-11 | 2011-12-21 | 大连理工大学 | Large-scale bearing test table having hydrostatic loading closed structure |
| CN104062138A (en) * | 2014-06-23 | 2014-09-24 | 上海交通大学 | Dynamic test loading device |
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