CN202582449U - Axial gap measuring device of thrust bearing - Google Patents
Axial gap measuring device of thrust bearing Download PDFInfo
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- CN202582449U CN202582449U CN 201220235815 CN201220235815U CN202582449U CN 202582449 U CN202582449 U CN 202582449U CN 201220235815 CN201220235815 CN 201220235815 CN 201220235815 U CN201220235815 U CN 201220235815U CN 202582449 U CN202582449 U CN 202582449U
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- piston
- thrust bearing
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- cavity
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Abstract
The utility model discloses an axial gap measuring device of a thrust bearing. The measuring device comprises a gap measuring clamp, a dial indicator, an air source, a pipeline and an air source control mechanism, wherein the gap measuring clamp comprises an air cylinder and a piston, the piston head of the piston is positioned in the cavity of the air cylinder, the cavity of the air cylinder is divided into an upper cavity and a lower cavity separated from each other, the upper cavity is communicated with an upper air inlet arranged on the side wall of the cylinder, the lower cavity is communicated with a lower air inlet arranged on the side wall of the cylinder, a shaft shoulder with a variable cross section with small upper part and large lower part is arranged at the upper part of a piston shaft, the inner ring of the thrust bearing is contacted with the shaft shoulder of the piston shaft, a guide shaft sleeve is sheathed at the shaft section above the inner ring of the thrust bearing, the top of the piston shaft is connected with a locknut, the outer ring of the thrust bearing is fixed on the cylinder by virtue of an outer ring fixing unit, the top end of the piston shaft is contacted with a measuring probe of the dial indicator, and the upper air inlet and lower air inlet of the air cylinder are all communicated with the air source by virtue of pipelines. The measuring device can be used for measuring the gap of the single or combined thrust bearing.
Description
Technical field
The utility model relates to the device that the various thrust bearing end plays of aircraft are measured; Specifically be meant a kind of thrust bearing end play measurement mechanism; This measurement mechanism both can have been measured the end play between single thrust bearing outer ring and the inner ring; In the time of also can being installed in series on aircraft components, measure the gap that bearing need keep each other to a plurality of thrust bearings.
Background technology
The use of thrust bearing on seating plane is very extensive, and especially the support part of the transmission shafts at different levels of aircraft Pneumatic component usually comes the rotation of back shaft with thrust bearing, thereby drives the running of other parts again.Thrust bearing generally comprises outer ring, inner ring, rolling body and retainer, and inner ring is also referred to as blowout patche, and the outer ring is also referred to as seat ring; Has end play between outer ring and the inner ring; In the concrete use of thrust bearing, different machine types is different with installation requirement to the quantity of bearing with parts, in addition; Aircraft components will use under high temperature and low temperature environment, and the assemblage gap of thrust bearing is had very strict requirement.
At present, aircraft components maintenance field lacks accurate, quick, an incorporate gap measuring apparatus for the clearance measurement aspect of thrust bearing; In the real work, the gauger usually need make up various measurers and anchor clamps and measure, converts, especially the thrust bearing clearance measurement of combination; Difficulty is bigger; What the measuring method of distributed combination was brought is the accumulation of error, and different personnel measure next result also because multiple measurement error repeatedly produces different measurement results.
The utility model content
The purpose of the utility model provides a kind of thrust bearing end play measurement mechanism; This measurement mechanism can carry out clearance measurement to the thrust bearing of the multiple piece number of different type of machines; And can measure one or more combination bearing total backlash, measuring process is once accomplished, and precision is high; Effectively eliminate and repeatedly measure the cumulative errors of bringing; In addition, this device can be simulated bearing and under the duty of aircraft components, carried out clearance measurement, directly obtains Bearing Installation needed adjusting pad quantity or thickness on aircraft components.
The above-mentioned purpose of the utility model realizes through following technical scheme: a kind of thrust bearing end play measurement mechanism is characterized in that: this measurement mechanism comprises clearance measurement anchor clamps, dial gauge, source of the gas, pipeline and source of the gas control gear, and said clearance measurement anchor clamps comprise cylinder and piston; Cylinder has cylinder body and cavity, and the piston head of said piston is positioned at the cylinder cavity, and piston head is separated into isolated epicoele and cavity of resorption with the cylinder cavity; Epicoele is communicated with the last air intake opening that cylinder side wall is offered; Cavity of resorption is communicated with the following air intake opening that cylinder side wall is offered, and the axis of the piston of piston stretches out the cylinder body of cylinder, and the top of the axis of the piston has the shaft shoulder of up-small and down-big variable cross section; Thrust bearing to be measured is enclosed within on the said the axis of the piston; And be positioned at shaft shoulder place, the inner ring of thrust bearing contacts with the shaft shoulder of the axis of the piston, the axis of the piston be positioned at the thrust bearing inner ring above shaft part also be set with guideway; The top of the axis of the piston is connected with set nut; Press guideway after screwing in the top of set nut and the axis of the piston downwards, the inner ring that will be positioned at the thrust bearing of below compresses the shaft shoulder that is fastened on the axis of the piston, and the realization the axis of the piston is fixedly connected with the thrust bearing inner ring; The outer ring of thrust bearing is fixed on the cylinder body through the outer ring fixed cell; The top of the axis of the piston contacts with the measuring sonde of dial gauge, and the last air intake opening of said cylinder all is communicated with through said pipeline with source of the gas with following air intake opening, gets into the gaseous tension in upper chamber of air cylinder and the cavity of resorption through source of the gas control gear control source of the gas; Promoting piston by the pressure differential in epicoele and the cavity of resorption moves up and down; Piston drives the same moved further of inner ring of thrust bearing in the process of moving up and down, make the inner ring of thrust bearing produce axial displacement with respect to the outer ring, and the displacement of measuring the thrust bearing inner ring through dial gauge is to reach the purpose that the inner ring and the end play between the outer ring of thrust bearing are measured.
Described outer ring fixed cell comprises tightly fixed liner, briquetting and thumbscrew, and said tightly fixed liner is the cylindrical shell of both ends open, the outer ring of this tightly fixed liner casing pressure thrust bearing, and briquetting is pressed on the tightly fixed liner, and thumbscrew is fixedly connected on briquetting on the cylinder body.
In the utility model, the range of said dial gauge is in 0.01mm ~ 3.00mm scope.
In the utility model; Said pipeline comprises source of the gas trunk line and two admission lines; Article two, admission line and source of the gas trunk line intersect at same joint, and described source of the gas control gear comprises pressure control unit and reversing unit, and described pressure control unit comprises shut-off valve, pressure regulator valve and the rain glass that is installed in successively on the main line; Described reversing unit comprises reversal valve and T-valve; Said reversal valve is installed on the joint that admission line and source of the gas trunk line intersect, and is used to control the conducting of two admission lines, and said T-valve is two; Be installed in respectively on two admission lines, two T-valve are connected with following air intake opening with the last air intake opening of cylinder respectively.
In the utility model, said reversal valve is the hand four-way change-over valve, and the exhaust port of said reversal valve is connected with exhaust box, and other three port assemblies have the rapid-acting coupling of band tracheae.
In the measurement mechanism of the utility model, thrust bearing to be measured is placed in the cylinder, with the outer end that is installed in the dial gauge measuring junction aligning cylinder piston on the cylinder pedestal; Four interfaces on the hand-operated direction valve are furnished with quick attaching pneumatic element; Wherein the two-way tracheae connects the upper and lower chamber of cylinder respectively, and two-way tracheae one tunnel connects exhaust box in addition, and one the tunnel connects pressure control unit; Pressure control unit can provide different air pressure to cylinder; Pneumatic pipe cleaner is crossed the upper and lower chamber that reversing unit can switch to cylinder piston, thereby drives the upper and lower motion of cylinder piston axle, reaches the purpose that thrust bearing end play is measured; This measurement mechanism can be measured bearing end play single or combination, and can measure the adjusting pad that thrust bearing is installed in to be needed on the aircraft components.
Compared with prior art, the utility model can be measured one or more combination thrust bearing total backlash, and measuring process is once accomplished, and precision is high, effectively eliminates and repeatedly measures the cumulative errors of bringing.In addition, this device can be simulated bearing and under the duty of aircraft components, carried out clearance measurement, directly obtains Bearing Installation needed adjusting pad quantity or thickness on aircraft components.In addition, can accomplish the measurement in multiple size thrust bearing gap through the axis of the piston of changing the different diameters of axle, versatility is good, and accuracy is high, simple operation.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further explain.
Fig. 1 is the schematic diagram of structure of measurement mechanism of the present invention;
Fig. 2 is the structural representation of measurement mechanism of the present invention intermediate gap measured material;
Fig. 3 is the schematic diagram of pressure control unit in the measurement mechanism of the present invention.
Description of reference numerals
1, shut-off valve; 2, pressure regulator valve; 3, rain glass; 4, source of the gas trunk line; 5, admission line;
6, reversal valve; 7, T-valve; 8, cylinder; 9, dial gauge; 10, cylinder body;
11, cavity of resorption; 12, following air intake opening; 13, epicoele; 14, go up air intake opening;
15, piston head; 16, the axis of the piston; 17, thrust bearing; 18, thumbscrew;
19, set nut; 20, guideway; 21, briquetting; 22, tightly fixed liner;
23, regulate pad outward; 24, interior adjusting pad
Embodiment
To a kind of thrust bearing 17 end play measurement mechanisms shown in Figure 3, this measurement mechanism comprises clearance measurement anchor clamps, dial gauge 9, source of the gas, pipeline and source of the gas control gear like Fig. 1, and the clearance measurement anchor clamps comprise cylinder 8 and piston; Cylinder 8 has cylinder body 10 and cavity; The piston head 15 of piston is positioned at cylinder 8 cavitys, and piston head 15 is separated into isolated epicoele 13 and cavity of resorption 11 with cylinder 8 cavitys, and epicoele 13 is communicated with the last air intake opening 14 that cylinder body 10 sidewalls are offered; Cavity of resorption 11 is communicated with the following air intake opening 12 that cylinder body 10 sidewalls are offered; The axis of the piston 16 of piston stretches out the cylinder body 10 of cylinder 8, and the top of the axis of the piston 16 has the shaft shoulder of up-small and down-big variable cross section, and thrust bearing 17 to be measured is enclosed within on the axis of the piston 16; And be positioned at shaft shoulder place; The inner ring of thrust bearing 17 contacts with the shaft shoulder of the axis of the piston 16, the axis of the piston 16 be positioned at thrust bearing 17 inner rings above shaft part also be set with guideway 20, the top of the axis of the piston 16 is connected with set nut 19; Set nut 19 presses guideway 20 downwards after screwing with the top of the axis of the piston 16; The inner ring that will be positioned at the thrust bearing 17 of below compresses the shaft shoulder that is fastened on the axis of the piston 16, and realization the axis of the piston 16 is fixedly connected with thrust bearing 17 inner rings, and the outer ring of thrust bearing 17 is fixed on the cylinder body 10 through the outer ring fixed cell; The top of the axis of the piston 16 contacts with the measuring sonde of dial gauge 9; The last air intake opening 14 and the following air intake opening 12 of cylinder 8 all are communicated with through pipeline with source of the gas, control source of the gas through the source of the gas control gear and get into the gaseous tension in cylinder 8 epicoeles 13 and the cavity of resorption 11, promote piston by epicoele 13 with cavity of resorption 11 interior pressure differentials and move up and down; Piston drives the same moved further of inner ring of thrust bearing 17 in the process of moving up and down; Make the inner ring of thrust bearing 17 produce axial displacement with respect to the outer ring, the displacement of measuring thrust bearing 17 inner rings through dial gauge 9 is to reach the purpose that the inner ring and the end play between the outer ring of thrust bearing 17 are measured, and the range of this dial gauge 9 is in 0.01mm ~ 3.00mm scope.This measurement mechanism provides the corresponding driving bleed pressure according to the parts for maintenance handbook; Give the thrust bearing driving pressure; Utilize reversing unit to carry out the switching of air feed direction; Through measuring the displacement that connects the axis of the piston 16 of thrust bearing 17 in the cylinder, directly read the end play numerical value between thrust bearing 17 inner rings and the outer ring by the dial gauge 9 that is fixed on the pedestal.
The outer ring fixed cell comprises tightly fixed liner 22, briquetting 21 and thumbscrew 18; Tightly fixed liner 22 is the cylindrical shell of both ends open; The outer ring of these tightly fixed liner 22 casing pressure thrust bearings 17, briquetting 21 are pressed on the tightly fixed liner 22, and thumbscrew 18 is fixedly connected on briquetting 21 on the cylinder body 10.
Pipeline comprises that source of the gas trunk line 4 and 5, two admission lines of two admission lines 5 intersect at same joint with source of the gas trunk line 4, and the source of the gas control gear comprises pressure control unit and reversing unit; Pressure control unit comprises shut-off valve 1, pressure regulator valve 2 and the rain glass 3 that is installed in successively on the main line, and reversing unit comprises reversal valve 6 and T-valve 7, and reversal valve 6 is installed on the joint that admission line 5 and source of the gas trunk line 4 intersect; Be used to control the conducting of two admission lines 5, reversal valve 6 is the hand four-way change-over valve, and the exhaust port of reversal valve 6 is connected with exhaust box; Be used to get rid of residual air, other three port assemblies have the rapid-acting coupling of band tracheae, and these three ports comprise two give vent to anger port and air inlet ports; Two ports of giving vent to anger connect the upper and lower chamber of cylinder respectively through tracheae, and the air inlet port connects pressure control unit, and this reversal valve 6 adopts manually control; The conversion of the upper and lower cavity internal pressure of cylinder is accomplished in the convenient switching of accomplishing airflow direction, thereby the driven plunger axle produces straight-line displacement; T-valve 7 is two; Be installed in respectively on two admission lines 5, two T-valve 7 are connected with following air intake opening 12 with the last air intake opening 14 of cylinder 8 respectively, exert pressure through the upper and lower chamber of giving cylinder 8; Promote the upper and lower of the axis of the piston 16 and move the gap of measuring thrust bearing through dial gauge 9.
The internal diameter of this axis of the piston is equipped with according to the internal diameter size of tested thrust bearing, therefore can measure the thrust bearing of different size through the axis of the piston of changing different size.
For the gap of the dual thrust bearing of parts for maintenance handbook appointment, can obtain the bearing clearance numerical value of appointment through regulating outer quantity or the thickness of regulating pad 23 and interior adjusting pad 24.
The source of the gas control gear of present embodiment comprises pressure control unit and reversing unit; Its principle of work is, opens the shut-off valve 1 of gas circuit, and source of the gas is through the working pressure of pressure regulator valve 2 simulated aircraft Pneumatic components; The simulation thrust bearing is installed in the duty on the aircraft Pneumatic component; The pretightning force of applying appointment for tested thrust bearing through entering into the respective cavities of cylinder 8 behind the reversal valve 6, promotes the axially-movable of cylinder 8 inner carrier axles 16 through the air pressure of ovennodulation; After the reversing unit conversion; Pressure gets into the another one cavity of cylinder, promotes the piston axle and does reverse axially-movable, thereby reach the purpose that the end play between thrust bearing inner ring and the outer ring is measured.
The thrust bearing end play measurement mechanism of present embodiment can be measured a thrust bearing or more than one combination bearing total backlash; Measuring process is once accomplished; Effectively eliminate and repeatedly measure the cumulative errors of bringing, have that accuracy of measurement height, versatility are good, the characteristics of simple operation.The basic principle of work of this measurement mechanism is, the simulation thrust bearing is installed in the duty on the aircraft components, and the outer ring of thrust bearing is fixed, and the displacement of measuring inner ring reaches the purpose that the bearing clearance is measured.In addition; For the aircraft components that the dual thrust bearing is installed; The parts for maintenance handbook can be specified the gap requirement of thrust bearing; At this moment, be installed in interior adjusting pad 24 and outer quantity or the thickness of regulating pad 23 between two bearings, make the size of the bearing clearance size conforms parts for maintenance handbook appointment of measuring through adjusting; At this moment shim promptly is pad quantity or the thickness that needs on the aircraft components, can reach to measure the function that thrust bearing is installed in needed pad quantity on the aircraft components or thickness.Pressure control unit adopts the mode of scalable atmospheric pressure to come moving of driven plunger axle, can be good at simulating thrust bearing and is installed in the duty on the aircraft Pneumatic component, applies the pretightning force of appointment for tested bearing.
Claims (5)
1. thrust bearing end play measurement mechanism, it is characterized in that: this measurement mechanism comprises clearance measurement anchor clamps, dial gauge, source of the gas, pipeline and source of the gas control gear, said clearance measurement anchor clamps comprise cylinder and piston; Cylinder has cylinder body and cavity, and the piston head of said piston is positioned at the cylinder cavity, and piston head is separated into isolated epicoele and cavity of resorption with the cylinder cavity; Epicoele is communicated with the last air intake opening that cylinder side wall is offered; Cavity of resorption is communicated with the following air intake opening that cylinder side wall is offered, and the axis of the piston of piston stretches out the cylinder body of cylinder, and the top of the axis of the piston has the shaft shoulder of up-small and down-big variable cross section; Thrust bearing to be measured is enclosed within on the said the axis of the piston; And be positioned at shaft shoulder place, the inner ring of thrust bearing contacts with the shaft shoulder of the axis of the piston, the axis of the piston be positioned at the thrust bearing inner ring above shaft part also be set with guideway; The top of the axis of the piston is connected with set nut; Press guideway after screwing in the top of set nut and the axis of the piston downwards, the inner ring that will be positioned at the thrust bearing of below compresses the shaft shoulder that is fastened on the axis of the piston, and the realization the axis of the piston is fixedly connected with the thrust bearing inner ring; The outer ring of thrust bearing is fixed on the cylinder body through the outer ring fixed cell; The top of the axis of the piston contacts with the measuring sonde of dial gauge, and the last air intake opening of said cylinder all is communicated with through said pipeline with source of the gas with following air intake opening, gets into the gaseous tension in upper chamber of air cylinder and the cavity of resorption through source of the gas control gear control source of the gas.
2. thrust bearing end play measurement mechanism according to claim 1; It is characterized in that: described outer ring fixed cell comprises tightly fixed liner, briquetting and thumbscrew; Said tightly fixed liner is the cylindrical shell of both ends open; The outer ring of this tightly fixed liner casing pressure thrust bearing, briquetting is pressed on the tightly fixed liner, and thumbscrew is fixedly connected on briquetting on the cylinder body.
3. thrust bearing end play measurement mechanism according to claim 1 is characterized in that: the range of said dial gauge is in 0.01mm ~ 3.00mm scope.
4. according to each described thrust bearing end play measurement mechanism of claim 1 to 3; It is characterized in that: said pipeline comprises source of the gas trunk line and two admission lines; Article two, admission line and source of the gas trunk line intersect at same joint, and described source of the gas control gear comprises pressure control unit and reversing unit, and described pressure control unit comprises shut-off valve, pressure regulator valve and the rain glass that is installed in successively on the main line; Described reversing unit comprises reversal valve and T-valve; Said reversal valve is installed on the joint that admission line and source of the gas trunk line intersect, and is used to control the conducting of two admission lines, and said T-valve is two; Be installed in respectively on two admission lines, two T-valve are connected with following air intake opening with the last air intake opening of cylinder respectively.
5. thrust bearing end play measurement mechanism according to claim 4 is characterized in that: said reversal valve is the hand four-way change-over valve, and the exhaust port of said reversal valve is connected with exhaust box, and other three port assemblies have the rapid-acting coupling of band tracheae.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220235815 CN202582449U (en) | 2012-05-23 | 2012-05-23 | Axial gap measuring device of thrust bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220235815 CN202582449U (en) | 2012-05-23 | 2012-05-23 | Axial gap measuring device of thrust bearing |
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| CN202582449U true CN202582449U (en) | 2012-12-05 |
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| CN 201220235815 Expired - Lifetime CN202582449U (en) | 2012-05-23 | 2012-05-23 | Axial gap measuring device of thrust bearing |
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Cited By (8)
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| CN105710639A (en) * | 2016-04-22 | 2016-06-29 | 安徽安凯金达机械制造有限公司 | Tool and method for adjusting joint bearing clearance of balance shaft assembly |
| CN105758643A (en) * | 2016-03-15 | 2016-07-13 | 洛阳轴研科技股份有限公司 | Bearing carrying capability detection device |
| CN107966089A (en) * | 2017-11-29 | 2018-04-27 | 陕西航空电气有限责任公司 | A kind of fixture for detecting axial clearance of motor |
| CN107991779A (en) * | 2018-01-30 | 2018-05-04 | 深圳市永盛隆实业发展有限公司 | One kind folds VR glasses |
| CN108311755A (en) * | 2018-03-06 | 2018-07-24 | 广州飞机维修工程有限公司 | The positioning device and localization method precisely cut for airplane heat exchanger |
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| CN109405714A (en) * | 2018-12-13 | 2019-03-01 | 哈尔滨电气动力装备有限公司 | Reactor coolant pump thrust disc measurement of fit clearance device |
| CN111578818A (en) * | 2020-04-10 | 2020-08-25 | 东方电气集团东方汽轮机有限公司 | Thrust bearing thrust gap measuring device and gap measuring method |
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- 2012-05-23 CN CN 201220235815 patent/CN202582449U/en not_active Expired - Lifetime
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| CN105758643B (en) * | 2016-03-15 | 2018-07-10 | 洛阳轴承研究所有限公司 | A kind of bearing load carrying capacity detection device |
| CN105758643A (en) * | 2016-03-15 | 2016-07-13 | 洛阳轴研科技股份有限公司 | Bearing carrying capability detection device |
| CN105710639B (en) * | 2016-04-22 | 2017-10-03 | 安徽安凯金达机械制造有限公司 | A kind of balance shaft assembly oscillating bearing gap adjustment frock and method of adjustment |
| CN105710639A (en) * | 2016-04-22 | 2016-06-29 | 安徽安凯金达机械制造有限公司 | Tool and method for adjusting joint bearing clearance of balance shaft assembly |
| CN107966089B (en) * | 2017-11-29 | 2019-10-18 | 陕西航空电气有限责任公司 | A kind of fixture detecting axial clearance of motor |
| CN107966089A (en) * | 2017-11-29 | 2018-04-27 | 陕西航空电气有限责任公司 | A kind of fixture for detecting axial clearance of motor |
| CN107991779A (en) * | 2018-01-30 | 2018-05-04 | 深圳市永盛隆实业发展有限公司 | One kind folds VR glasses |
| CN107991779B (en) * | 2018-01-30 | 2023-11-07 | 深圳市永盛隆实业发展有限公司 | Folding VR glasses |
| CN108311755A (en) * | 2018-03-06 | 2018-07-24 | 广州飞机维修工程有限公司 | The positioning device and localization method precisely cut for airplane heat exchanger |
| CN109029211A (en) * | 2018-07-26 | 2018-12-18 | 柳州上汽汽车变速器有限公司 | The measuring instrument and measurement method of speed changer shaft axial gap |
| CN109029211B (en) * | 2018-07-26 | 2020-06-12 | 柳州上汽汽车变速器有限公司 | Measuring instrument and measuring method for axial clearance of rotating shaft of transmission |
| CN109405714A (en) * | 2018-12-13 | 2019-03-01 | 哈尔滨电气动力装备有限公司 | Reactor coolant pump thrust disc measurement of fit clearance device |
| CN111578818A (en) * | 2020-04-10 | 2020-08-25 | 东方电气集团东方汽轮机有限公司 | Thrust bearing thrust gap measuring device and gap measuring method |
| CN111578818B (en) * | 2020-04-10 | 2021-12-21 | 东方电气集团东方汽轮机有限公司 | Thrust bearing thrust gap measuring device and gap measuring method |
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Granted publication date: 20121205 |
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| CX01 | Expiry of patent term |