CN105157982A - Low-coupling axial and radial combined loading device for rolling bearing and loading method - Google Patents
Low-coupling axial and radial combined loading device for rolling bearing and loading method Download PDFInfo
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- CN105157982A CN105157982A CN201510341830.5A CN201510341830A CN105157982A CN 105157982 A CN105157982 A CN 105157982A CN 201510341830 A CN201510341830 A CN 201510341830A CN 105157982 A CN105157982 A CN 105157982A
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Abstract
The invention discloses a low-coupling axial and radial combined loading device for a rolling bearing and a loading method, and relates to the loading field of bearing tests. The low-coupling axial and radial combined loading device for the rolling bearing and the loading method aim to solve a problem in the prior art that the transverse friction between contact surfaces of the bearing and the load is high after loading when an axial load and a radial load are applied to a tested bearing simultaneously, the transverse stiffness of the loading device is great, the friction between a loading head in one direction and a test assembly restricts movement of a loading head in another direction, application of the load in the other direction is further affected, loads in one or two directions cannot be completely loaded to the tested bearing, and loading of the loads is caused to be inaccurate. According to the invention, a small oil tank is placed below the bearing, a hydraulic pump extracts oil in the small oil tank, then the extracted oil is injected into a pressure oil inlet, a liquid hydrostatic pressure bearing ability is generated after the oil flows through a liquid hydrostatic pressure orifice, a hydraulic moving disc and a hydraulic static disc are connected through an elastic connecting sleeve, and a coupling effect of loads in different directions is reduced. The loading device and the loading method provided by the invention can be applied to a test device which needs to simultaneously apply two loads which are vertical with each other in direction.
Description
Technical field
The present invention relates to the load charger to bearing and loading method.Belong to the load domains of bearing test load.
Background technology
Rotor test technology is the important content of mechanical system test, is rotor-support-foundation system and the examination of spring bearing life-span, Performance Assessment, manufactures and designs the prerequisite of Verification and reliability application.Sometimes need in process of the test to apply axis and radial load to rotor-support-foundation system or support component.Rolling bearing is as the support component of rotor-support-foundation system, and its test is typical rotor test.Bearing test is generally carry out at bearing tester, and load simulated when bearing tester is tested is one of crucial working condition of bearing test, loads the confidence level whether accurately directly affecting test findings.Because bearing exists play, and there is juxtaposition metamorphose at load effect lower bearing, there is distortion a little or mobile at loading direction in loading procedure centre bearer.Conventional loading method is that loading head directly contacts with test tool, and loading head is connected with loader body lateral stiffness, as shown in Figure 1.When applying axial load and radial load to tested bearing simultaneously, load side-friction between the latter two surface of contact larger, and charger lateral stiffness is large, friction force between the loading head in a direction and test tool must limit the movement of other direction loading head, and then have influence on the applying of other direction load, make the load in one or two direction can not be loaded into tested bearing completely, cause Work condition analogue inaccurate, directly have influence on the accuracy of test findings.
Summary of the invention
When axial load and radial load being applied to tested bearing while that the present invention being to solve present, load side-friction between rear bearing and load contact face large, charger lateral stiffness is large, the movement of the friction force restriction other direction loading head between the loading head in a direction and test tool, and then have influence on the applying of other direction load, make the load in one or two direction can not be loaded into tested bearing completely, cause load to load inaccurate problem.Low coupling axis and radial compound charger and the loading method of rolling bearing are now provided.
Low coupling axis and the radial compound charger of rolling bearing, it comprises hydraulic system and two loading heads,
Hydraulic system connects two loading heads simultaneously, hydraulic system provides pressure oil for loading head, a loading head is for being arranged between radial loader and rolling bearing test tool, and another loading head is for being arranged between axial loader and rolling bearing test tool
Hydraulic system comprises little fuel tank, refrigeratory, oil filter, hydraulic pump, No. two oil filters, a surplus valve, No. two surplus valves, a throttling valve, No. two throttling valve, a retaining valve and No. two retaining valves,
Little fuel tank is positioned at the bottom of the oil return opening of rolling bearing, for accessing the bearing oil flowed out from bearing arrangement, oil inlet end being communicated with little fuel tank with an oil filter successively through subcooler of hydraulic pump, the oil outlet end of hydraulic pump is communicated with one end of No. two oil filters, the other end of No. two oil filters is communicated with No. two surplus valve one end with one end of a surplus valve simultaneously, the other end of a surplus valve is communicated with one end of a throttling valve, the other end of No. two surplus valves is communicated with one end of No. two throttling valve, the other end of a throttling valve is communicated with one end of a retaining valve, the other end of No. two throttling valve is communicated with one end of No. two retaining valves,
Two loading head structures are identical, and each loading head comprises static pressure dish, static pressure Moving plate, elastic connection sleeve and pressure oil import,
The other end of the other end of a retaining valve and No. two retaining valves respectively with a pressure oil inlet communication,
In static pressure dish, be provided with fluid pressure throttle orifice, pressure oil import is communicated with one end of fluid pressure throttle orifice,
The surface of static pressure dish front end is with the center of static pressure dish for the center of circle is along the circumferential direction provided with annular groove, and described annular groove is communicated with the other end of fluid pressure throttle orifice,
Connected by elastic connection sleeve between static pressure dish and static pressure Moving plate,
The front end of static pressure Moving plate is ball head structure, ball head structure for withstanding in the ball-and-socket of rolling bearing,
Pressure oil import is communicated with fluid pressure throttle orifice, and pressure oil flows through fluid pressure throttle orifice through pressure oil import, forms carrying oil film between static pressure dish and static pressure Moving plate, connects with the fluid friction realized between static pressure dish and static pressure Moving plate.
According to the loading method that the low coupling of rolling bearing axially realizes with radial compound charger, it comprises following content:
Little fuel tank is adopted to access the lubricating oil of rolling bearing place outflow, static-pressure system hydraulic pump is by extracting the lubricating oil in little fuel tank after refrigeratory cooling and a metre filter, again after No. two filtrator essences are filtered, pressure adjustment is carried out through a surplus valve and a throttling valve, then the pressure oil import on a loading head is injected into by a retaining valve, simultaneously, after No. two surplus valves and No. two throttling valve carry out pressure adjustment, the pressure oil import on another loading head is injected into through No. two retaining valves, lubricating oil enters each fluid pressure throttle orifice respectively by two pressure oil imports, make between the static pressure dish of each loading head and static pressure Moving plate, to form carrying oil film, achieve low coupling axis and the radial compound loading method of rolling bearing.
Beneficial effect of the present invention is: when applying axle, radial load to rolling bearing simultaneously, a loading head is arranged between radial loader and rolling bearing test tool, another loading head is arranged between axial loader and rolling bearing test tool, adopt a hydraulic system to provide pressure oil to the pressure oil import of two loading heads by a hydraulic pump simultaneously, different branch is regulated by different throttling valve and surplus valve, to ensure that different branch (loading head) obtains the pressure needed
In addition, the loading head of charger of the present invention adopts static pressure dish and static pressure Moving plate composition, elastic connection sleeve is adopted to connect between static pressure dish and static pressure Moving plate, elastic connection sleeve is axial and lateral stiffness is low, avoid test load impact, reduce even to eliminate influencing each other between different directions loading force.
In addition, static pressure Moving plate front end is ball head structure, and ball head structure withstands in the ball-and-socket of rolling bearing, scribbles lubricant between bulb and ball-and-socket.Scribble lubricant between bulb and ball-and-socket, bulb can rotate in ball-and-socket, makes hydraulic pressure support face can automatic capturing, avoids unbalance loading.
Static pressure dish is fixed on charger, front end is fluid pressure throttle orifice, after passing into pressure oil by hydraulic system in pressure oil import, pressure oil flows through fluid pressure throttle orifice, forms carrying oil film, quiet dish and Moving plate are separated by oil film between static pressure dish and Moving plate, within the scope of the carrying of static pressure, be fluid friction between two dishes, side-friction is very little, achieves the object of horizontal antifriction.
The hydraulic system oil liquid of apparatus of the present invention adopts the lubricating oil of test bearing, and in testing machine casing, bearing oil got by pump, supports for hydraulic pressure static pressure, avoids adopting the pollution of outer hydraulic oil filling leakage to bearing oil; For grease lubricating bearing exerciser, apparatus of the present invention fluid pressure Operation system setting independently hydraulic system, avoids fluid disclosure risk to affect tested bearing by chamber isolation during structural design.
Two dishes are linked to be entirety by elastic connection sleeve, the lateral stiffness of elastic connection sleeve is little, little to the side-friction of device, and adopts this loading head to be carried on rolling bearing by load, load is made to load accurately, existing load mode accuracy more than 5 times on year-on-year basis.
Accompanying drawing explanation
Fig. 1 is that loading head applies the charger of axial load and radial load to rolling bearing;
The structural scheme of mechanism of the loading head of low coupling axially and in radial compound charger that Fig. 2 is the rolling bearing described in embodiment one;
The low coupling that Fig. 3 is the rolling bearing described in embodiment one axially carries end face structural representation with static pressure dish in radial compound charger;
The low structural representation that is axial and hydraulic system in radial compound charger that is coupled that Fig. 4 is the rolling bearing described in embodiment one.
Embodiment
Embodiment one: illustrate present embodiment with reference to Fig. 2 to Fig. 4, low coupling axis and the radial compound charger of the rolling bearing described in present embodiment, it comprises hydraulic system and two loading heads,
Hydraulic system connects two loading heads simultaneously, hydraulic system provides pressure oil for loading head, a loading head is for being arranged between radial loader and rolling bearing test tool, and another loading head is for being arranged between axial loader and rolling bearing test tool
Hydraulic system comprises little fuel tank 1, refrigeratory 2, oil filter 3, hydraulic pump 4, No. two oil filters 6, surplus valve 7, No. two surplus valves 17, throttling valve 8, No. two throttling valve 18, retaining valve 9 and No. two retaining valves 19,
Little fuel tank 1 is positioned at the bottom of the oil return opening of rolling bearing, for accessing the bearing oil flowed out from bearing arrangement, oil inlet end being communicated with little fuel tank 1 with an oil filter 3 successively through subcooler 2 of hydraulic pump 4, the oil outlet end of hydraulic pump 4 is communicated with one end of No. two oil filters 6, the other end of No. two oil filters 6 is communicated with No. two surplus valve 17 one end with one end of a surplus valve 7 simultaneously, the other end of a surplus valve 7 is communicated with one end of a throttling valve 8, the other end of No. two surplus valves 17 is communicated with one end of No. two throttling valve 18, the other end of a throttling valve 8 is communicated with one end of a retaining valve 9, the other end of No. two throttling valve 18 is communicated with one end of No. two retaining valves 19,
Two loading head structures are identical, and each loading head comprises static pressure dish 11, static pressure Moving plate 12, elastic connection sleeve 13 and pressure oil import 14,
The other end of a retaining valve 9 is communicated with a pressure oil import 14 respectively with the other end of No. two retaining valves 19,
In static pressure dish 11, be provided with fluid pressure throttle orifice, pressure oil import 14 is communicated with one end of fluid pressure throttle orifice,
The surface of static pressure dish 11 front end is with the center of static pressure dish 11 for the center of circle is along the circumferential direction provided with annular groove, and described annular groove is communicated with the other end of fluid pressure throttle orifice,
Connected by elastic connection sleeve 13 between static pressure dish 11 and static pressure Moving plate 12,
The front end of static pressure Moving plate 12 is ball head structure, ball head structure for withstanding in the ball-and-socket of rolling bearing,
Pressure oil import 14 is communicated with fluid pressure throttle orifice, pressure oil flows through fluid pressure throttle orifice through pressure oil import 14, between static pressure dish 11 and static pressure Moving plate 12, form carrying oil film, connect with the fluid friction realized between static pressure dish 11 and static pressure Moving plate 12.
In present embodiment, this device is loader and fluid pressure sliding bearing integrated morphology; Charger front end adopts fluid pressure support technology, longitudinal high bearing capacity, and be laterally fluid friction, friction force is low, and laterally can locate;
In present embodiment, in order to make the pressure distribution of static pressure loading end even, on static pressure dish loading end, process grading ring groove through each throttle orifice, as shown in Figure 3.
For oil lubrication rolling bearing, the pressure oil-source that pressure port needs takes from the return oil system of rolling bearing.Tested bearing oil, after rolling bearing flows out, is placed in rolling bearing bottom and is received oily little fuel tank.
Device provided by the invention can be applied to other to be needed to apply in the test unit of orthogonal both direction load simultaneously.If load is less, on its general principles, gas-static can be adopted to support and to realize horizontal drag reduction.
In present embodiment, charger of the present invention can be placed on other rigid loading device front end, provides loading force by other chargers.The hydraulic static dish of this charger and other rigid loading devices can also be processed into one.
The size of hydraulic static dish and charge oil pressure can carry out calculating and regulating according to the size of loading force, and the larger charge oil pressure of loading force is larger.
Embodiment two: present embodiment is described further the low coupling axis of the rolling bearing described in embodiment one and radial compound charger, in present embodiment, hydraulic system also comprises a tensimeter 5, No. two tensimeters 10 and No. three tensimeters 20
A tensimeter 5 is arranged on the oil-out pipeline of hydraulic pump 4, and No. two tensimeters 10 are arranged on the oil-in pipeline of 14, and No. three tensimeters 20 are arranged on the oil-in pipeline of pressure oil import 14-1 of another loading head.
Embodiment three: present embodiment is described further the low coupling axis of the rolling bearing described in embodiment one and radial compound charger, in present embodiment, ball head structure and the roller bearing shop of static pressure Moving plate 12 front end have lubricant.
Embodiment four: the axial loading method realized with radial compound charger of low coupling of the rolling bearing according to embodiment one or two, it comprises following content:
Little fuel tank 1 is adopted to access the lubricating oil of rolling bearing place outflow, static-pressure system hydraulic pump 4 is cooled by refrigeratory 2 and filtrator 3 filters lubricating oil in the little fuel tank 1 of rear extraction, again after No. two filtrator 6 essences are filtered, pressure adjustment is carried out through a surplus valve 7 and a throttling valve 8, then the pressure oil import 14 on a loading head is injected into by a retaining valve 9, simultaneously, after No. two surplus valves 17 and No. two throttling valve 18 carry out pressure adjustment, the pressure oil import on another loading head is injected into through No. two retaining valves 19, lubricating oil enters each fluid pressure throttle orifice respectively by two pressure oil imports, make between the static pressure dish 11 of each loading head and static pressure Moving plate 12, to form carrying oil film, achieve low coupling axis and the radial compound loading method of rolling bearing.
Embodiment five: present embodiment is described further the loading method that low coupling axis and the radial compound charger of the rolling bearing described in embodiment four realize, and in present embodiment, it also comprises following content:
A tensimeter 5 is adopted to gather and show the pressure of static-pressure system hydraulic pump 4,
Adopt No. two tensimeters 10 to gather and show the pressure after a surplus valve 7 and a throttling valve 8 regulate,
Adopt No. three tensimeters 20 to gather and show the pressure after No. two surplus valves 17 and No. two throttling valve 18 regulate.
Claims (5)
1. the low coupling of rolling bearing axially with radial compound charger, it is characterized in that, it comprises hydraulic system and two loading heads,
Hydraulic system connects two loading heads simultaneously, hydraulic system provides pressure oil for loading head, a loading head is for being arranged between radial loader and rolling bearing test tool, and another loading head is for being arranged between axial loader and rolling bearing test tool
Hydraulic system comprises little fuel tank (1), refrigeratory (2), oil filter (3), hydraulic pump (4), No. two oil filters (6), a surplus valve (7), No. two surplus valves (17), a throttling valve (8), No. two throttling valve (18), a retaining valve (9) and No. two retaining valves (19)
Little fuel tank (1) is positioned at the bottom of the oil return opening of rolling bearing, for accessing the bearing oil flowed out from bearing arrangement, oil inlet end being communicated with little fuel tank (1) with an oil filter (3) successively through subcooler (2) of hydraulic pump (4), the oil outlet end of hydraulic pump (4) is communicated with one end of No. two oil filters (6), the other end of No. two oil filters (6) is communicated with No. two surplus valve (17) one end with one end of a surplus valve (7) simultaneously, the other end of a surplus valve (7) is communicated with one end of a throttling valve (8), the other end of No. two surplus valves (17) is communicated with one end of No. two throttling valve (18), the other end of a throttling valve (8) is communicated with one end of a retaining valve (9), the other end of No. two throttling valve (18) is communicated with one end of No. two retaining valves (19),
Two loading head structures are identical, and each loading head comprises static pressure dish (11), static pressure Moving plate (12), elastic connection sleeve (13) and pressure oil import (14),
The other end of a retaining valve (9) is communicated with a pressure oil import (14) respectively with the other end of No. two retaining valves (19),
In static pressure dish (11), be provided with fluid pressure throttle orifice, pressure oil import (14) is communicated with one end of fluid pressure throttle orifice,
The surface of static pressure dish (11) front end is that the center of circle is along the circumferential direction provided with annular groove with the center of static pressure dish (11), and described annular groove is communicated with the other end of fluid pressure throttle orifice,
Connected by elastic connection sleeve (13) between static pressure dish (11) and static pressure Moving plate (12),
The front end of static pressure Moving plate (12) is ball head structure, ball head structure for withstanding in the ball-and-socket of rolling bearing,
Pressure oil import (14) is communicated with fluid pressure throttle orifice, pressure oil flows through fluid pressure throttle orifice through pressure oil import (14), between static pressure dish (11) and static pressure Moving plate (12), form carrying oil film, connect with the fluid friction realized between static pressure dish (11) and static pressure Moving plate (12).
2. the low coupling of rolling bearing according to claim 1 axially with radial compound charger, it is characterized in that, hydraulic system also comprises a tensimeter (5), No. two tensimeters (10) and No. three tensimeters (20),
A tensimeter (5) is arranged on the oil-out pipeline of hydraulic pump (4), No. two tensimeters (10) are arranged on the oil-in pipeline of pressure oil import (14) of a loading head, and No. three tensimeters (20) are arranged on the oil-in pipeline of pressure oil import (14-1) of another loading head.
3. the low coupling of rolling bearing according to claim 1 axially with radial compound charger, it is characterized in that, ball head structure and the roller bearing shop of static pressure Moving plate (12) front end have lubricant.
4. the axial loading method realized with radial compound charger of low coupling of rolling bearing according to claim 1 and 2, it is characterized in that, it comprises following content:
Little fuel tank (1) is adopted to access the lubricating oil of rolling bearing place outflow, static-pressure system hydraulic pump (4) extracts the lubricating oil in little fuel tank (1) after being filtered by refrigeratory (2) cooling and a filtrator (3), again after No. two filtrator (6) essences are filtered, pressure adjustment is carried out through a surplus valve (7) and a throttling valve (8), then the pressure oil import (14) on a loading head is injected into by a retaining valve (9), simultaneously, after No. two surplus valves (17) and No. two throttling valve (18) carry out pressure adjustment, the pressure oil import on another loading head is injected into through No. two retaining valves (19), lubricating oil enters each fluid pressure throttle orifice respectively by two pressure oil imports, make between the static pressure dish (11) of each loading head and static pressure Moving plate (12), to form carrying oil film, achieve low coupling axis and the radial compound loading method of rolling bearing.
5. the axial loading method realized with radial compound charger of low coupling of rolling bearing according to claim 4, it is characterized in that, it also comprises following content:
A tensimeter (5) is adopted to gather and show the pressure of static-pressure system hydraulic pump (4),
Adopt No. two tensimeters (10) to gather and show the pressure after a surplus valve (7) and a throttling valve (8) regulate,
Adopt No. three tensimeters (20) to gather and show the pressure after No. two surplus valves (17) and No. two throttling valve (18) regulate.
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 |
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| CN105157982A true CN105157982A (en) | 2015-12-16 |
| CN105157982B 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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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN111426475A (en) * | 2020-05-06 | 2020-07-17 | 湖南汉能科技有限公司 | Main shaft bearing impact test platform |
| CN113049789A (en) * | 2021-03-18 | 2021-06-29 | 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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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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