CN111895883B - Device and method for detecting blade tip length - Google Patents
Device and method for detecting blade tip length Download PDFInfo
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- CN111895883B CN111895883B CN202010766851.2A CN202010766851A CN111895883B CN 111895883 B CN111895883 B CN 111895883B CN 202010766851 A CN202010766851 A CN 202010766851A CN 111895883 B CN111895883 B CN 111895883B
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- positioning block
- driving device
- rotor blade
- block
- tenon
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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
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention provides a device for detecting the length of a blade tip, which can be used for measuring the length of the blade tip of a rotor blade, is convenient to use and high in measuring efficiency, and also provides a measuring method using the device for measuring. It is including the clamping device that is located the bottom, the clamping device is used for clamping rotor blade, and it still includes detection device, detection device is including the last backup pad that is located the rotor blade top, it is equipped with lever structure to go up the backup pad bottom, lever structure more than or equal to one, lever structure front end and rotor blade top end rear end and percentage table contact, still be equipped with the spring between the anterior and the last backup pad bottom of lever structure.
Description
Technical Field
The invention relates to the technical field of rotor blade detection, in particular to a device and a method for detecting the length of a blade tip.
Background
The rotor blade needs to rotate at a high speed in the engine, so whether the length of the blade tip of the rotor blade meets the tolerance requirement is directly related to the normal rotation of the engine, and the blade tip is too long or too short, which may cause serious consequences. The rotor blade is constructed as shown in FIG. 1 and includes a tenon 101 at the bottom of the rotor blade 100. the tenon 101 includes a convex end 1011 at the bottom and a concave end 1012 above the convex end 1011. an outwardly extending platform 102 is disposed between the tenon 101 and the blade. Currently, three-coordinate measuring machines are commonly used in the industry to measure tip length dimensions or to use simple tip length measuring tools. The three-coordinate measuring machine has a low efficiency although the measurement result is accurate, and the three-coordinate measuring machine equipment is expensive. The traditional tip measuring tool has higher requirements on the operation level of workers, and the measuring result is greatly influenced by human factors and is inconvenient to use.
Disclosure of Invention
In order to solve the problems, the invention provides a device for detecting the length of the blade tip, which can be used for measuring the length of the blade tip of the rotor blade, is convenient to use and high in measuring efficiency, and also provides a measuring method using the device for measuring.
The technical scheme is as follows: the utility model provides a device for detecting apex length, its is including the clamping device that is located the bottom, the clamping device is used for clamping rotor blade, its characterized in that: it still includes detection device, detection device is including the last backup pad that is located the rotor blade top, it is equipped with lever structure to go up the backup pad bottom, lever structure more than or equal to one, lever structure front end and rotor blade top end rear end and percentage table contact, still be equipped with the spring between the anterior of lever structure and the last backup pad bottom.
It is further characterized in that:
the front end of one lever structure extends forwards to form an operating rod, the rear part of the lever structure is connected with a linkage deflector rod, and the linkage deflector rod extends to the upper part of the rear parts of other lever structures;
the clamping device comprises a pressure surface positioning block, a top block, a pressing rocker arm and a rear end positioning block; the pressure surface positioning block comprises an arc positioning block which is oppositely arranged and corresponds to the shape of the concave end of the tenon, the ejector block is connected with the first driving device, and the pressing rocker arm is connected with the second driving device; the rotor blade is tightly jacked on the arc positioning block through the jacking block, and the rotor blade is tightly pressed on the rear end positioning block through the pressing rocker arm;
a movable cavity is formed in the pressure surface positioning block, the ejector block is movably mounted in the movable cavity up and down, the first driving device penetrates through the pressure surface positioning block and is connected with the ejector block, the ejector block further extends upwards to form an ejecting block used for ejecting the bottom of the flange plate, a clamping cavity is formed in the top of the movable cavity, a tenon of a rotor blade is located in the clamping cavity, and the arc positioning block extending towards the inside of the clamping cavity is arranged at the top of the pressure surface positioning block corresponding to the clamping cavity; the pressing rocker arm is arranged corresponding to the front end of the tenon, the rear end positioning block is arranged corresponding to the rear end of the tenon, the pressing rocker arm is connected with a second driving device, and the tenon is pressed on the rear end positioning block through the pressing rocker arm;
the device further comprises a pressure reducing valve, a reversing valve and a first speed regulating valve which are connected through pipelines, wherein the first speed regulating valve is connected with a second driving device and an induction check valve, and the induction check valve is further connected with the second speed regulating valve and the first driving device.
A method for detecting the length of a blade tip by using the device is characterized by comprising the following steps:
step one, zero calibration; setting the first driving device and the second driving device to be in a closed state through the reversing valve, lifting the operating rod to drive the linkage deflector rod to lift the front ends of all levers, placing the rotor blade standard part into the detection device from the front end and placing the tenon of the standard part into the pressure surface positioning block; starting a first driving device and a second driving device through a reversing valve, firstly, driving a pressing rocker arm to press a rotor blade on a rear end positioning block by the second driving device, and then driving a jacking block to tightly jack the rotor blade on an arc positioning block by the driving device; loosening the operating rod to enable the front end of the lever to be in contact with the top end of the blade, and adjusting the reading of the dial indicator to enable the reading to be consistent with the size of the standard part;
step two, measuring a rotor blade; setting the first driving device and the second driving device to be in a closed state through the reversing valve, lifting the operating rod to drive the linkage deflector rod to lift the front ends of all the levers, placing the rotor blade to be measured into the detection device from the front ends, and simultaneously placing the tenon into the pressure surface positioning block; starting a first driving device and a second driving device through a reversing valve, firstly, driving a pressing rocker arm to press a rotor blade on a rear end positioning block by the second driving device, and then driving a jacking block to tightly jack the rotor blade on an arc positioning block by the driving device; and the operating rod is loosened, the front end of the lever is contacted with the top end of the blade, and the deviation value of the blade to be measured relative to the standard part can be obtained by reading the dial indicator.
The beneficial effects of adopting the structure and the method are as follows: after zero calibration, each measurement only needs to place the blade to be measured into the measuring device and control the clamping device to clamp tightly, and then the numerical value of the dial indicator is directly read and the corresponding parameter of the blade can be obtained through calculation after the lever mechanism is operated to contact with the top end of the blade.
Drawings
FIG. 1 is a rotor blade block diagram;
FIG. 2 is a front end block diagram of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 2;
FIG. 4 is a rear end block diagram of the present invention;
FIG. 5 is an enlarged view of the structure at B in FIG. 4;
FIG. 6 is an enlarged view of the structure at C in FIG. 2;
FIG. 7 is a pressure side positioning block pattern;
FIG. 8 is a view showing the construction of the clamping apparatus (omitting the pressing rocker arm);
fig. 9 is a pneumatic control schematic of the present invention.
Detailed Description
As shown in fig. 2 and 4, the device for detecting the tip length includes a clamping device 1 located at the bottom, the clamping device 1 is used for clamping a rotor blade 100, and the device further includes a detecting device, the detecting device includes an upper support plate 2 located above the rotor blade 100, a lever structure 5 (preferably, the ratio of a resistance arm to a power arm is 1: 1) is arranged at the bottom of the upper support plate 2, the number of the lever structures 5 is greater than or equal to one, the front end of the lever structure 5 is in contact with the top end of the rotor blade 100, the rear end of the lever structure is in contact with a dial indicator 3, a spring 4 is further arranged between the front portion of the lever structure 5 and the bottom of the upper support plate 2, and the front end of the lever is in contact with the top end of the blade through the spring 4.
Specifically, with reference to fig. 3 and 5, the number of the lever structures 5 is two or more, and three in the drawing, the front end of one lever structure 5 extends forward to form an operating rod 51, the rear part of the lever structure 5 is connected with a linkage shift lever 52, and the linkage shift lever 52 extends to the upper part of the rear parts of the other lever structures; by adopting the structure, when the front end of the lever needs to be lifted up to place the blade into the detection device, the operating rod 51 is directly lifted up to drive the lever to rotate and enable the rear end of the lever to descend, and meanwhile, the linkage driving rod 52 connected to the rear end is driven to descend, and the linkage driving rod 52 is pressed on the rear ends of other levers again to enable the front end to be lifted up, so that one lever structure is operated to lift up other lever structures, the blade is convenient to load and unload, and the blade is convenient to use. In addition, when the lever is attached to the top of the blade, the linkage deflector rod 52 is not in contact with other levers, and a certain safety gap is reserved.
Referring to fig. 4, 6 and 7, the clamping device 1 includes a pressure surface positioning block 11, a top block 12, a pressing rocker arm 13 and a rear end positioning block 14; the pressure surface positioning block 11 comprises an arc positioning block 15 which is oppositely arranged and corresponds to the shape of the concave end of the tenon 101, the top block 12 is connected with the first driving device 6, and the pressing rocker arm 13 is connected with the second driving device 7; the rotor blade 100 is tightly pressed on the arc positioning block 15 through the top block 12, and the rotor blade 100 is pressed on the rear end positioning block 14 through the pressing rocker arm 13, so that the rotor blade 100 is clamped and positioned.
Specifically, as shown in fig. 4, fig. 6, fig. 7 and fig. 8, a movable cavity 16 is formed inside a pressure surface positioning block 11, a top block 12 is movably mounted in the movable cavity 16 up and down, a first driving device 6 (air cylinder) penetrates through the pressure surface positioning block 11 to be connected with the top block 12, the top block 12 further extends upwards to form a jacking block 17 for jacking the bottom of a flange plate 102, a clamping cavity 18 is formed at the top of the movable cavity 16, a tenon 101 of a rotor blade 100 is located in the clamping cavity 18, an arc positioning block 15 extending towards the inside of the clamping cavity 18 is arranged at the top of the pressure surface positioning block 11 corresponding to the clamping cavity 18, and the bottom of the flange plate 102 is stably pushed upwards through the jacking block 17 while a concave end of the tenon is ensured to be tightly attached to the arc positioning block 15, so that the blade tip can be automatically aligned to a vertically upward state; the pressing rocker arm 13 is arranged corresponding to the front end of the tenon 101, the rear end positioning block 14 is arranged corresponding to the rear end of the tenon 101 and is fixed on the pressure surface positioning block 11 through screws, the pressing rocker arm 13 is connected with the second driving device 7 (cylinder), the pressing rocker arm 13 is driven to rotate 90 degrees firstly during use, then the tenon 101 is pressed on the rear end positioning block 14 through the pressing rocker arm 13, and a gasket is arranged between the pressing rocker arm 13 and the tenon 101.
As shown in fig. 9, the pneumatic control valve further comprises an air source, a pressure reducing valve 21, a manual reversing valve 22 and a first speed regulating valve 23 which are connected through pipelines, the first speed regulating valve 23 is connected with an air inlet end of a second driving device 7 and an induction check valve 24, the induction check valve 24 is further connected with a second speed regulating valve 25 and an air inlet end of a first driving device 6, an air outlet end of the second driving device 7 and an air outlet end of the first driving device 6 are further connected to the reversing valve 22, the logical sequence of horizontal compression and vertical jacking can be realized by adopting the connecting structure, and the pneumatic control valve can be automatically clamped by operating the reversing valve, so that the pneumatic control valve is further convenient to use.
A method for detecting the length of a blade tip by using the device comprises the following steps:
step one, zero calibration; switching on an air source, adjusting a pressure reducing valve 21 to adjust the pressure of the air source to a reasonable range, setting a first driving device 6 and a second driving device 7 to be in a closed state through a manual reversing valve 22, lifting the operating rod 51 to drive a linkage lifting rod 52 to lift the front ends of all levers, putting a rotor blade standard part into the detection device 1 from the front end, and putting the rabbet of the standard part into the pressure surface positioning block 11; starting a first driving device 6 and a second driving device 7 through a manual reversing valve 22, firstly, driving a pressing rocker arm 13 by the second driving device 7 to press the rotor blade on a rear end positioning block 14, and then driving a top block 12 by the first driving device 6 to tightly press the rotor blade on an arc positioning block 15; the operating rod 51 is loosened, the front end of the lever is contacted with the top end of the blade, and the reading of the dial indicator is adjusted to be consistent with the size of the standard part;
step two, measuring a rotor blade; setting the first driving device 6 and the second driving device 7 to be in a closed state through the manual reversing valve 22, lifting the operating rod 51 to drive the linkage shift lever 52 to lift the front ends of all levers, placing the rotor blade to be measured into the detection device 1 from the front ends, and simultaneously placing the tenon into the pressure surface positioning block 11; starting a first driving device 6 and a second driving device 7 through a manual reversing valve 22, firstly, driving a pressing rocker arm 13 by the second driving device to press the rotor blade on a rear end positioning block 14, and then driving a top block 12 by the first driving device 6 to tightly press the rotor blade on an arc positioning block 15; the operating rod 51 is loosened, the front end of the lever is in contact with the top end of the blade, the deviation value of the blade to be measured relative to the standard part can be obtained by reading the dial indicator, the use is convenient, and meanwhile, the detection efficiency is high.
After the detection device and the detection method are adopted, the tenon is horizontally pressed through the pressing rocker arm 13, then the flange plate is tightly pressed through the pressing block 17, the concave end of the tenon can be tightly attached to the arc positioning block 15, the position is ensured to be corresponding, the positioning precision is ensured, meanwhile, the blade is stably and reliably pressed by the two cylinders in the horizontal direction and the vertical direction, the repeatability and reproducibility of the measurement result are ensured, the problem of poor reproducibility of the measurement result caused by manual operation factors is avoided, the size is small, the device is portable, the measurement beside workshop equipment can be realized, the measurement efficiency is improved, and the operation is convenient and fast.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. The utility model provides a device for detecting apex length, its is including the clamping device that is located the bottom, the clamping device is used for clamping rotor blade, its characterized in that: the detection device comprises an upper supporting plate positioned above the rotor blade, the bottom of the upper supporting plate is provided with a lever structure, the number of the lever structures is more than or equal to one, the front end of the lever structure is in contact with the top end of the rotor blade, the rear end of the lever structure is in contact with a dial indicator, and a spring is further arranged between the front part of the lever structure and the bottom of the upper supporting plate; the front end of one lever structure extends forwards to form an operating rod, the rear part of the lever structure is connected with a linkage deflector rod, and the linkage deflector rod extends to the upper part of the rear parts of other lever structures.
2. An apparatus for detecting tip length as defined in claim 1, wherein: the clamping device comprises a pressure surface positioning block, a top block, a pressing rocker arm and a rear end positioning block; the pressure surface positioning block comprises an arc positioning block which is oppositely arranged and corresponds to the shape of the concave end of the tenon, the tenon is positioned at the bottom of the rotor blade, the top block is connected with the first driving device, and the pressing rocker arm is connected with the second driving device; the rotor blade is tightly jacked on the arc positioning block through the jacking block, and the rotor blade is tightly pressed on the rear end positioning block through the pressing rocker arm.
3. An apparatus for detecting tip length as defined in claim 2, wherein: a movable cavity is formed in the pressure surface positioning block, the ejector block is movably mounted in the movable cavity up and down, the first driving device penetrates through the pressure surface positioning block and is connected with the ejector block, the ejector block further extends upwards to form an ejecting block used for ejecting the bottom of the flange plate, a clamping cavity is formed in the top of the movable cavity, a tenon of a rotor blade is located in the clamping cavity, and the arc positioning block extending towards the inside of the clamping cavity is arranged at the top of the pressure surface positioning block corresponding to the clamping cavity; the pressing rocker arm is arranged corresponding to the front end of the tenon, the rear end positioning block is arranged corresponding to the rear end of the tenon, the pressing rocker arm is connected with the driving device II, and the tenon is pressed on the rear end positioning block through the pressing rocker arm.
4. A device for detecting blade tip length according to claim 2 or 3, characterized in that: the device further comprises a pressure reducing valve, a reversing valve and a first speed regulating valve which are connected through pipelines, wherein the first speed regulating valve is connected with a second driving device and an induction check valve, and the induction check valve is further connected with the second speed regulating valve and the first driving device.
5. A method of using the apparatus for detecting tip length of claim 4, comprising the steps of:
step one, zero calibration; setting the first driving device and the second driving device to be in a closed state through the reversing valve, lifting the operating rod to drive the linkage deflector rod to lift the front ends of all levers, placing the rotor blade standard part into the detection device from the front end and placing the tenon of the standard part into the pressure surface positioning block; starting a first driving device and a second driving device through a reversing valve, firstly, driving a pressing rocker arm to press a rotor blade on a rear end positioning block by the second driving device, and then driving a jacking block to tightly jack the rotor blade on an arc positioning block by the driving device; loosening the operating rod to enable the front end of the lever to be in contact with the top end of the blade, and adjusting the reading of the dial indicator to enable the reading to be consistent with the size of the standard part;
step two, measuring a rotor blade; setting the first driving device and the second driving device to be in a closed state through the reversing valve, lifting the operating rod to drive the linkage deflector rod to lift the front ends of all the levers, placing the rotor blade to be measured into the detection device from the front ends, and simultaneously placing the tenon into the pressure surface positioning block; starting a first driving device and a second driving device through a reversing valve, firstly, driving a pressing rocker arm to press a rotor blade on a rear end positioning block by the second driving device, and then driving a jacking block to tightly jack the rotor blade on an arc positioning block by the driving device; and the operating rod is loosened, the front end of the lever is contacted with the top end of the blade, and the deviation value of the blade to be measured relative to the standard part can be obtained by reading the dial indicator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010766851.2A CN111895883B (en) | 2020-08-03 | 2020-08-03 | Device and method for detecting blade tip length |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010766851.2A CN111895883B (en) | 2020-08-03 | 2020-08-03 | Device and method for detecting blade tip length |
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| CN111895883A CN111895883A (en) | 2020-11-06 |
| CN111895883B true CN111895883B (en) | 2021-11-19 |
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| RU2017141904A (en) * | 2017-11-30 | 2019-05-31 | Ростовский вертолетный производственный комплекс, Публичное акционерное общество "Роствертол" имени Б.Н. Слюсаря | Device to control the removal of the blade of the helicopter |
| CN110243324A (en) * | 2019-06-24 | 2019-09-17 | 中国航发动力股份有限公司 | A kind of dove-tail form blade tenon locating and detecting device and method |
| CN110500931A (en) * | 2019-08-12 | 2019-11-26 | 无锡航亚科技股份有限公司 | A kind of the measurement fixture and measurement method of vane foil size and blade tip size |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2336498A1 (en) * | 2009-12-15 | 2011-06-22 | Siemens Aktiengesellschaft | Apparatus for determining the angular position of a pivotable compressor guide vane |
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2020
- 2020-08-03 CN CN202010766851.2A patent/CN111895883B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330008A (en) * | 2014-11-24 | 2015-02-04 | 沈阳黎明航空发动机(集团)有限责任公司 | Device and method for measuring dimension of rocker arm combination part |
| CN105352434A (en) * | 2015-11-26 | 2016-02-24 | 沈阳黎明航空发动机(集团)有限责任公司 | Inductance measuring apparatus for exhaust area of director guider blade |
| RU2017141904A (en) * | 2017-11-30 | 2019-05-31 | Ростовский вертолетный производственный комплекс, Публичное акционерное общество "Роствертол" имени Б.Н. Слюсаря | Device to control the removal of the blade of the helicopter |
| CN110243324A (en) * | 2019-06-24 | 2019-09-17 | 中国航发动力股份有限公司 | A kind of dove-tail form blade tenon locating and detecting device and method |
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