CN113108664A - Device and method for measuring tangential swinging quantity of blade - Google Patents
Device and method for measuring tangential swinging quantity of blade Download PDFInfo
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- CN113108664A CN113108664A CN202110317946.0A CN202110317946A CN113108664A CN 113108664 A CN113108664 A CN 113108664A CN 202110317946 A CN202110317946 A CN 202110317946A CN 113108664 A CN113108664 A CN 113108664A
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 126
- 230000000712 assembly Effects 0.000 claims description 11
- 238000000429 assembly Methods 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
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Abstract
The invention discloses a measuring device and a measuring method for tangential swinging quantity of blades, which comprises a positioning mechanism for positioning and fixing a turbine disc, a measuring mechanism which is provided with a measuring meter and enables the measuring meter to be over against the exhaust edges of the blades for measuring, and a swinging mechanism which is arranged on the positioning mechanism and is used for applying force to swing the blades along the tangential direction of the turbine disc, wherein a guide rail which is used for being connected with the measuring mechanism in a sliding way is arranged on the positioning mechanism along the radial direction, a limiting mechanism which is used for limiting the measuring mechanism so as to ensure that the relative position of each blade is the same as the relative position of the turbine disc when the measuring mechanism measures is arranged on the guide rail, the meter striking direction of the measuring meter and the force application direction of the swinging mechanism are both vertical to the extension direction of the guide rail, the meter head of the measuring meter is struck to the exhaust edges of the blades along the tangential direction by sliding the measuring mechanism along the radial direction, so as to measure the tangential swinging quantity of the blade according to the reading of the measuring meter.
Description
Technical Field
The invention relates to the technical field of aero-engines, in particular to a device and a method for measuring tangential swinging quantity of a blade.
Background
Aircraft engine gas turbine rotor assemblies typically include a gas turbine disk, gas turbine rotor blades that are joined by blade serrations embedded in gas turbine disk mortises. Because the gas turbine rotor component is in a high-temperature state in the working process at a hot end part of an engine, the tenon teeth of the gas working blade are subjected to thermal expansion, and the working blade and the disc tenon groove are in clearance fit for preventing the stress concentration of the tenon teeth from reducing the service life of the blade, so that the blade can move in a free state in the working process, and the stress concentration is avoided. Because the shapes of the blade tenon tooth and the gas disk mortise are complex, the fit clearance between the tenon tooth and the mortise cannot be directly calculated through data, and under the ordinary condition, the clearance value between the blade tenon tooth and the mortise can be evaluated by measuring the tangential swinging quantity of the exhaust edge of the working blade.
The current operation for measuring the tangential swinging quantity of the exhaust edge of the gas turbine working blade is as follows: firstly, a gas turbine rotor assembly is placed on a workbench, a dial indicator and an indicator frame are used, a dial indicator measuring head is arranged on an exhaust edge of a blade, one hand presses the gas turbine rotor assembly, the other hand shakes the blade, and the maximum value X1 and the minimum value X2 displayed by the dial indicator are recorded, namely the tangential swinging amount of the working blade is X1-X2. The dial indicator head has inaccurate dial direction, and in addition, the position of different blades is different when being measured, and the force for swinging different blades is different, so that the measuring result is inaccurate.
Disclosure of Invention
The invention provides a device and a method for measuring the tangential swinging amount of a blade, which aim to solve the technical problem of low accuracy of a measurement result of the conventional method for measuring the tangential swinging amount of the blade.
According to one aspect of the invention, a measuring device for measuring the tangential swinging amount of a blade installed in a mortise of a turbine disc is provided, so as to evaluate whether the gap between a tenon tooth and the mortise of the blade meets the requirement or not, the measuring device comprises a positioning mechanism for positioning and fixing the turbine disc, a measuring mechanism installed with a measuring meter and enabling the measuring meter to measure the exhaust edge of the blade, and a swinging mechanism installed on the positioning mechanism and used for applying force to swing the blade along the tangential direction of the turbine disc, a guide rail used for being in sliding connection with the measuring mechanism is arranged on the positioning mechanism along the radial direction, a limiting mechanism used for limiting the measuring mechanism to ensure that the relative position of each blade is the same as that of the turbine disc when the measuring mechanism measures the blade, the metering direction of the measuring meter and the force applying direction of the swinging mechanism are both perpendicular to the extending direction of the guide rail, the measuring mechanism slides inwards along the radial direction and is limited by the limiting mechanism, so that the gauge outfit of the measuring meter hits the exhaust edge of the blade along the tangential direction, and then the blade is applied with force to the limiting position along the tangential direction by the swinging mechanism, and the tangential swinging amount of the blade is measured according to the reading of the measuring meter.
Furthermore, the swing mechanism comprises two pushing assemblies which are arranged on the positioning mechanism along the tangential direction of the blade and oppositely, and the blade is sequentially pushed to the limit position along the tangential direction through the two pushing assemblies.
Furthermore, a limiting sliding groove is formed in the measuring mechanism in the tangential direction, the swing mechanism further comprises a pushing block which is connected with the limiting sliding groove in a sliding mode, a slot for inserting the blade is formed in the pushing block, and the pushing block is pushed through the pushing assembly to further push the blade.
Furthermore, two groove wall surfaces of the slot are respectively matched with the blade basin surface and the blade back surface of the blade.
Further, the pushing assembly comprises a mounting seat mounted on the positioning mechanism and a pushing rod connected with the mounting seat in a sliding mode in the tangential direction.
Furthermore, the limiting mechanism comprises a limiting pin inserted on the guide rail.
Further, the positioning mechanism comprises a fixed seat and a centering clamp installed on the fixed seat.
Further, the centering fixture comprises a centering screw fixed on the fixed seat and used for being coaxially assembled with the turbine disc, and a compression nut which is connected with the screw in a matched mode and used for compressing and fixing the turbine disc sleeved on the screw.
Furthermore, a bottom end positioning block matched with the bottom end opening of the turbine disc is arranged on the centering screw, and a top end positioning block matched with the top end opening of the turbine disc is arranged on the compression nut.
According to another aspect of the present invention, there is also provided a blade tangential swing amount measuring method for measuring a tangential swing amount of a blade mounted in a mortise of a turbine disk to evaluate whether a clearance between a tooth and the mortise of the blade meets a requirement, comprising the steps of: coaxially assembling and fixing the turbine disc and the positioning mechanism; the measuring mechanism slides inwards along the radial direction and is limited by the limiting mechanism, so that the gauge outfit of the measuring gauge hits the exhaust edge of the blade along the tangential direction; the blade is swung to the limit position along the tangential direction by the swing mechanism, so that the tangential swing amount of the blade is measured according to the reading of the measuring meter.
The invention has the following beneficial effects:
the device for measuring the tangential swinging quantity of the blade fixes the turbine disc on the positioning mechanism in a positioning way, the tangential direction of the turbine disc is the same as the force application direction of the swinging mechanism arranged on the positioning mechanism, the positioning mechanism is radially provided with the guide rail used for being in sliding connection with the measuring mechanism, the meter striking direction of the measuring meter arranged on the measuring mechanism and the force application direction of the swinging mechanism are both vertical to the extension direction of the guide rail, so that the force application direction of the swinging mechanism and the meter striking direction of the measuring meter are both the same as the tangential direction of the turbine disc, in addition, the guide rail is provided with the limiting mechanism used for limiting the measuring mechanism, when in measurement, the meter head of the measuring meter is struck to the exhaust edge of the blade to be measured in the tangential direction when the measuring mechanism slides inwards to the limiting mechanism in the radial direction, and then the swinging blade is forced to the limiting position in the tangential direction, therefore, when the measuring device measures the tangential swinging quantity of the blade, the measuring meter can be ensured to hit the exhaust edge of the blade along the tangential direction, the blade is ensured to be exerted and swung along the tangential direction, and in addition, the relative positions of the measuring mechanism and the turbine disc are ensured to be the same when different blades are measured through the limiting mechanism, so that the consistency of a positioning reference and a measuring reference is ensured, and the accuracy of a measuring result is ensured.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a measuring device according to a preferred embodiment of the present invention;
FIG. 2 is a schematic structural view of a measuring device according to a preferred embodiment of the present invention;
fig. 3 is a schematic structural diagram of a push block according to a preferred embodiment of the present invention.
Illustration of the drawings:
100. a turbine disk; 200. a blade; 1. a positioning mechanism; 11. a fixed seat; 12. a centering screw; 13. a compression nut; 2. a measuring mechanism; 21. a sliding seat; 22. a watch frame; 23. a measuring meter; 3. a swing mechanism; 31. a mounting seat; 32. a push rod; 33. a push block; 4. a guide rail; 5. a limiting mechanism.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.
FIG. 1 is a schematic structural view of a measuring device according to a preferred embodiment of the present invention; FIG. 2 is a schematic structural view of a measuring device according to a preferred embodiment of the present invention; fig. 3 is a schematic structural diagram of a push block according to a preferred embodiment of the present invention.
As shown in fig. 1 and fig. 2, the measuring device for measuring the tangential swinging amount of the blade of the present embodiment is used for measuring the tangential swinging amount of the blade 200 installed in the mortise of the turbine disc 100 to evaluate whether the clearance between the tenon tooth and the mortise of the blade 200 meets the requirement, the measuring device includes a positioning mechanism 1 for positioning and fixing the turbine disc 100, a measuring mechanism 2 installed with a measuring gauge 23 and making the measuring gauge 23 measure the exhaust edge of the blade 200, and a swinging mechanism 3 installed on the positioning mechanism 1 and used for applying a force to swing the blade 200 in the tangential direction of the turbine disc 100, a guide rail 4 for sliding connection with the measuring mechanism 2 is radially arranged on the positioning mechanism 1, a limiting mechanism 5 for limiting the measuring mechanism 2 to ensure that the relative position of each blade is the same as the relative position of the turbine disc 100 when the measuring mechanism 2 measures is arranged on the guide rail 4, the metering direction of the measuring gauge 23 and the force applying direction of the swinging mechanism 3 are both perpendicular to the extending direction of the guide, the measuring mechanism 2 slides inwards along the radial direction and is limited by the limiting mechanism 5, so that the head of the measuring instrument 23 tangentially hits on the exhaust edge of the blade 200, the blade 200 is further tangentially forced to a limit position by the swinging mechanism 3, and the tangential swinging amount of the blade 200 is measured according to the reading of the measuring instrument 23.
The device for measuring the tangential swinging quantity of the blade fixes the turbine disc 100 on the positioning mechanism 1, the tangential direction of the turbine disc 100 is the same as the force application direction of the swinging mechanism 3 arranged on the positioning mechanism 1, the positioning mechanism 1 is radially provided with the guide rail 4 used for being in sliding connection with the measuring mechanism 2, the meter striking direction of the measuring meter 23 arranged on the measuring mechanism 2 and the force application direction of the swinging mechanism 3 are both vertical to the extension direction of the guide rail 4, so that the force application direction of the swinging mechanism 3 and the meter striking direction of the measuring meter 23 are both the same as the tangential direction of the turbine disc 100, in addition, the guide rail 4 is provided with the limiting mechanism 5 used for limiting the measuring mechanism 2, when in measurement, the meter head of the measuring meter 23 is struck to the exhaust edge of the blade 200 to be measured along the tangential direction by sliding the measuring mechanism 2 inwards to the limiting mechanism 5 along the radial direction, furthermore, the swing mechanism 3 applies force to swing the blade 200 to the limit position in the tangential direction, so that the tangential swing amount of the blade 200 is measured according to the reading of the measuring meter 23, and therefore, when the measuring device of the invention measures the tangential swing amount of the blade 200, the measuring meter 23 can be ensured to hit the exhaust edge of the blade 200 in the tangential direction, and the blade 200 is ensured to be applied with force in the tangential direction, and in addition, the limiting mechanism 5 is used for ensuring that the relative positions of the measuring mechanism 2 and the turbine disc 100 are the same when different blades 200 are measured, so that the positioning reference and the measuring reference are consistent, and the accuracy of the measuring result is ensured.
As shown in fig. 1 and 2, in the present embodiment, the swing mechanism 3 includes two pushing assemblies disposed on the positioning mechanism 1 along the tangential direction of the blade 200, and the blade 200 is sequentially pushed to the limit position along the tangential direction by the two pushing assemblies. The blade 200 is pushed to the extreme position in the direction by one pushing assembly, the reading of the measuring meter 23 is recorded, the blade 200 is pushed to the extreme position in the direction by the other pushing assembly, the reading of the measuring meter 23 is recorded, and the absolute value obtained by subtracting the two readings is the tangential swinging amount of the blade 200. Optionally, the swing mechanism 3 includes a push-pull assembly and a push-pull block connected to a movable end of the push-pull assembly, the push-pull block is provided with a slot for inserting the blade 200, the push-pull block is pushed by the movable end of the push-pull assembly along the tangential direction, so as to push the blade 200 to the extreme position of one end of the tangential direction, the push-pull block is pulled by the movable end of the push-pull assembly along the tangential direction, so as to pull the blade 200 to the extreme position of the other end of the tangential direction, and the tangential swing amount of the blade 200 is measured according to the reading of the measuring meter 23 when the blade 200.
As shown in fig. 1, 2 and 3, the measuring mechanism 2 is tangentially provided with a limiting sliding groove, the swing mechanism 3 further includes a pushing block 33 slidably connected to the limiting sliding groove, the pushing block 33 is provided with a slot for inserting the blade 200, and the pushing block 33 is pushed by the pushing assembly to push the blade 200. The two slot wall surfaces of the slot are respectively matched with the blade basin surface and the blade back surface of the blade 200. In the present embodiment, the measuring mechanism 2 includes a slide base 21 slidably connected to the guide rail 4, a meter case 22 mounted on the slide base 21, and a measuring meter 23 mounted on the meter case 22.
As shown in fig. 1 and 2, the pushing assembly includes a mounting seat 31 mounted on the positioning mechanism 1 and a pushing rod 32 slidably connected with the mounting seat 31 in a tangential direction. In this embodiment, the push rods 32 are not connected to the push block 33, and the push block 33 is sequentially pushed by the two push rods 32, so that the two slot wall surfaces of the slots on the push block 33 are sequentially fitted to the blade basin surface and the blade back surface of the blade 200, and further pushed to the limit position. Optionally, the end of the push rod 32 is provided with a push block 33 for contacting the blade 200, and the push blocks 33 on the two push assemblies are respectively matched with the blade basin surface and the blade back surface of the blade 200. After the turbine disc 100 and the positioning mechanism 1 are coaxially assembled and fixed, the blade 200 to be tested is sequentially pushed to the extreme positions at the two tangential ends by the two pushing assemblies. Alternatively, the two pushing assemblies push the blade 200 with equal force at the same time, so that the tangential direction of the blade 200 to be tested is the same as the pushing direction of the pushing assemblies, and the turbine disc 100 is pressed and fixed by the pressing nut 13. In the present embodiment, the push rod 32 is pushed by the thrust gauge, and the magnitude of the thrust force when each vane 200 is pushed is made equal. Optionally, the push rod 32 is a polished rod, a threaded rod, a worm gear mechanism, a ball screw mechanism, is precisely pushed, is accompanied by a pushing force, and can monitor the pushing force in real time.
As shown in fig. 1 and 2, the stopper mechanism 5 includes a stopper pin inserted into the guide rail 4. When the measuring mechanism 2 slides inward in the radial direction to the position of the limit pin, the measuring mechanism cannot slide continuously, and the gauge head of the measuring gauge 23 hits the measuring position of the blade 200 to be measured. In the present embodiment, the measurement location is located on the exhaust side of the vane 200. Alternatively, the measurement location is located on the intake edge of the blade 200. Optionally, a plurality of limiting holes for inserting limiting pins are formed in the guide rail 4 along the extending direction, so that the position of the measuring mechanism 2 can be adjusted according to turbine discs 100 of different sizes, and the head of the measuring meter 23 on the measuring mechanism 2 can be ensured to be hit on the exhaust edge of the blade 200.
As shown in fig. 1 and 2, the positioning mechanism 1 includes a fixing base 11 and a centering fixture mounted on the fixing base 11. The centering fixture comprises a centering screw 12 fixed on the fixed seat 11 and used for being coaxially assembled with the turbine disc 100, and a compression nut 13 connected with the screw in a matching manner and used for compressing and fixing the turbine disc 100 sleeved on the screw. The centering screw 12 is provided with a bottom end positioning block matched with the bottom end opening of the turbine disc 100, and the gland nut 13 is provided with a top end positioning block matched with the top end opening of the turbine disc 100. In this embodiment, the turbine disc 100 and the centering screw 12 are coaxially assembled through the centering action of the bottom end positioning block, so that the measuring mechanism 2 slides inwards in the radial direction, the blade 200 to be measured is inserted into the slot of the push block 33, and the turbine disc 100 is pressed and fixed through the compression nut 13. Optionally, the bottom of the compression nut 13 is provided with a friction washer or friction washer. Alternatively, the centering screw 12 is provided in a tapered shape having a large lower portion and a small upper portion; or the centering screw 12 is also sleeved with a friction sleeve.
As shown in fig. 1 and 2, the blade tangential swing amount measuring method of the present embodiment is used for measuring the tangential swing amount of a blade 200 installed in a mortise of a turbine disc 100 to evaluate whether a clearance between a tooth and the mortise of the blade 200 meets a requirement, and includes the following steps: the turbine disc 100 and the positioning mechanism 1 are coaxially assembled and fixed; the measuring mechanism 2 slides inwards along the radial direction and is limited by the limiting mechanism 5, so that the head of the measuring meter 23 tangentially hits the exhaust edge of the blade 200; the blade 200 is swung tangentially by the swing mechanism 3 to the extreme position, whereby the amount of tangential swing of the blade 200 is measured from the reading of the meter 23.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A blade tangential swing amount measuring apparatus for measuring a tangential swing amount of a blade (200) mounted in a mortise of a turbine disk (100) to evaluate whether a clearance between a tooth and the mortise of the blade (200) meets a requirement,
the measuring device comprises a positioning mechanism (1) for positioning and fixing the turbine disc (100), a measuring mechanism (2) which is provided with a measuring meter (23) and enables the measuring meter (23) to be over against the exhaust edge of the blade (200) for measuring, and a swinging mechanism (3) which is arranged on the positioning mechanism (1) and is used for applying force to swing the blade (200) along the tangential direction of the turbine disc (100),
the positioning mechanism (1) is radially provided with a guide rail (4) which is used for being in sliding connection with the measuring mechanism (2), the guide rail (4) is provided with a limiting mechanism (5) which is used for limiting the measuring mechanism (2) so as to ensure that the relative position of each blade is the same as that of the turbine disc (100) when the measuring mechanism (2) measures, the meter striking direction of the measuring meter (23) and the force application direction of the swinging mechanism (3) are both vertical to the extension direction of the guide rail (4),
the measuring mechanism (2) slides inwards along the radial direction and is limited by the limiting mechanism (5), so that the head of the measuring meter (23) hits the exhaust edge of the blade (200) along the tangential direction, the blade (200) is further swung to the limiting position along the tangential direction by the force applied by the swinging mechanism (3), and the tangential swinging amount of the blade (200) is measured according to the reading of the measuring meter (23).
2. Device for measuring the tangential swinging amount of a blade according to claim 1,
the swing mechanism (3) comprises two pushing assemblies which are arranged on the positioning mechanism (1) along the tangential direction of the blade (200) and oppositely, and the blade (200) is sequentially pushed to the limit position along the tangential direction through the two pushing assemblies.
3. Device for measuring the tangential swinging amount of a blade according to claim 2,
the measuring mechanism (2) is provided with a limiting sliding groove in the tangential direction, the swing mechanism (3) further comprises a pushing block (33) which is connected with the limiting sliding groove in a sliding mode, a slot for inserting the blade (200) is formed in the pushing block (33), the pushing block (33) is pushed through the pushing assembly, and then the blade (200) is pushed.
4. Device for measuring the tangential swinging amount of a blade according to claim 2,
the two groove wall surfaces of the slot are respectively matched with the blade basin surface and the blade back surface of the blade (200).
5. Device for measuring the tangential swinging amount of a blade according to claim 2,
the pushing assembly comprises a mounting seat (31) mounted on the positioning mechanism (1) and a pushing rod (32) connected with the mounting seat (31) in a sliding mode in the tangential direction.
6. Device for measuring the tangential swinging amount of a blade according to claim 1,
the limiting mechanism (5) comprises a limiting pin inserted on the guide rail (4).
7. Device for measuring the tangential swinging amount of a blade according to claim 1,
the positioning mechanism (1) comprises a fixed seat (11) and a centering clamp arranged on the fixed seat (11).
8. Device for measuring the tangential swinging amount of a blade according to claim 7,
the centering clamp comprises a centering screw (12) which is fixed on the fixed seat (11) and is used for being coaxially assembled with the turbine disc (100), and a compression nut (13) which is connected with the screw in a matched mode and is used for compressing and fixing the turbine disc (100) sleeved on the screw.
9. Device for measuring the tangential swinging amount of a blade according to claim 8,
a bottom end positioning block matched with the bottom end opening of the turbine disc (100) is arranged on the centering screw rod (12), and a top end positioning block matched with the top end opening of the turbine disc (100) is arranged on the compression nut (13).
10. A method for measuring the amount of tangential swing of a blade (200) mounted in a mortise of a turbine disc (100) to assess whether the clearance between the tooth and the mortise of the blade (200) is satisfactory, comprising the steps of:
the turbine disc (100) and the positioning mechanism (1) are coaxially assembled and fixed;
the measuring mechanism (2) slides inwards along the radial direction and is limited by the limiting mechanism (5), so that the head of the measuring meter (23) hits the exhaust edge of the blade (200) along the tangential direction;
the blade (200) is swung tangentially by the swing mechanism (3) to an extreme position, so that the tangential swing of the blade (200) is measured from the reading of the measuring gauge (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110317946.0A CN113108664A (en) | 2021-03-25 | 2021-03-25 | Device and method for measuring tangential swinging quantity of blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110317946.0A CN113108664A (en) | 2021-03-25 | 2021-03-25 | Device and method for measuring tangential swinging quantity of blade |
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| Publication Number | Publication Date |
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| CN113108664A true CN113108664A (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110317946.0A Pending CN113108664A (en) | 2021-03-25 | 2021-03-25 | Device and method for measuring tangential swinging quantity of blade |
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| CN (1) | CN113108664A (en) |
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| CN202533026U (en) * | 2012-04-12 | 2012-11-14 | 哈尔滨汽轮机厂有限责任公司 | Steam turbine blade assembling tangential displacement measuring and correcting device |
| US20160146701A1 (en) * | 2013-06-13 | 2016-05-26 | Mitsubishi Electric Corporation | End play measurement apparatus |
| CN105783631A (en) * | 2014-12-25 | 2016-07-20 | 芜湖东大汽车工业有限公司 | Blade bounce value detection tool of water pump assembly impeller |
| CN108180812A (en) * | 2017-12-29 | 2018-06-19 | 曹丽美 | A kind of bearing radial internal clearance measuring device and measuring method |
| CN108507437A (en) * | 2018-03-30 | 2018-09-07 | 中国航发航空科技股份有限公司 | The tangential movable amount detecting device of aircraft engine turbo blade |
| CN108548475A (en) * | 2018-04-12 | 2018-09-18 | 洛阳理工学院 | A kind of end-play survey tool of angular contact ball bearing |
| CN209727007U (en) * | 2019-03-21 | 2019-12-03 | 首钢京唐钢铁联合有限责任公司 | A kind of worm-gear speed reducer gap measuring apparatus |
| CN212205925U (en) * | 2020-05-25 | 2020-12-22 | 泉州市闽达机械制造有限公司 | Axial clearance detection measuring tool |
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2021
- 2021-03-25 CN CN202110317946.0A patent/CN113108664A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202533026U (en) * | 2012-04-12 | 2012-11-14 | 哈尔滨汽轮机厂有限责任公司 | Steam turbine blade assembling tangential displacement measuring and correcting device |
| US20160146701A1 (en) * | 2013-06-13 | 2016-05-26 | Mitsubishi Electric Corporation | End play measurement apparatus |
| CN105783631A (en) * | 2014-12-25 | 2016-07-20 | 芜湖东大汽车工业有限公司 | Blade bounce value detection tool of water pump assembly impeller |
| CN108180812A (en) * | 2017-12-29 | 2018-06-19 | 曹丽美 | A kind of bearing radial internal clearance measuring device and measuring method |
| CN108507437A (en) * | 2018-03-30 | 2018-09-07 | 中国航发航空科技股份有限公司 | The tangential movable amount detecting device of aircraft engine turbo blade |
| CN108548475A (en) * | 2018-04-12 | 2018-09-18 | 洛阳理工学院 | A kind of end-play survey tool of angular contact ball bearing |
| CN209727007U (en) * | 2019-03-21 | 2019-12-03 | 首钢京唐钢铁联合有限责任公司 | A kind of worm-gear speed reducer gap measuring apparatus |
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Application publication date: 20210713 |