CN114440813A - Rotor structure of series dual-redundancy linear displacement sensor and adjusting method thereof - Google Patents
Rotor structure of series dual-redundancy linear displacement sensor and adjusting method thereof Download PDFInfo
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- CN114440813A CN114440813A CN202210115617.2A CN202210115617A CN114440813A CN 114440813 A CN114440813 A CN 114440813A CN 202210115617 A CN202210115617 A CN 202210115617A CN 114440813 A CN114440813 A CN 114440813A
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- iron core
- pull rod
- friction block
- adjusting
- adjusting sleeve
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 65
- 238000012360 testing method Methods 0.000 claims abstract description 18
- 238000003466 welding Methods 0.000 claims description 19
- 239000003292 glue Substances 0.000 claims description 6
- 125000003003 spiro group Chemical group 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 description 1
- 206010063659 Aversion Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The invention discloses a rotor structure of a series dual-redundancy linear displacement sensor and an adjusting method thereof. According to the invention, the adjusting sleeve and the friction block are in threaded connection with the pull rod, so that the first iron core and the second iron core cannot be abraded by rotating the adjusting sleeve and the friction block during test and adjustment; the number of rotating circles of the adjusting sleeve and the friction block is directly calculated according to the thread pitch of the threads, and the first iron core and the second iron core are accurately moved without being disassembled and assembled for many times; therefore, the use failure rate and the production cost of the sensor can be reduced, and the service life and the yield of the sensor can be improved.
Description
Technical Field
The invention relates to the technical field of linear displacement sensors, in particular to a rotor structure of a series dual-redundancy linear displacement sensor and an adjusting method thereof.
Background
The linear displacement sensor has the function of converting mechanical displacement signals of the rotor iron core into electric signals proportional to the mechanical displacement signals. The method is widely applied to the field of aerospace, and can be used for displacement measurement of actuators, valves, piston rods and the like in a flight control system and a servo system.
At present, most of rotor structures of series dual-redundancy linear displacement sensors are adjusted by matching iron cores and pull rods through threads, and the threads on the inner diameter of the iron cores are abraded due to more adjustment times, so that the use failure rate is high and the service life is short; the small-part series double-redundancy rotor structure is realized by controlling the finish machining sizes of the pull rod and the iron core, the requirement on machining is high, and the product yield is low and the production cost is high.
In view of the above, the present inventors have made extensive studies and research on various defects and inconveniences caused by the incomplete design of the mover structure.
Disclosure of Invention
The invention aims to provide a rotor structure of a series dual-redundancy linear displacement sensor and an adjusting method thereof, which are used for reducing the use failure rate and the production cost of the sensor and improving the service life and the yield of the sensor.
In order to achieve the above purpose, the solution of the invention is:
the utility model provides a two redundant linear displacement sensor's of series connection active cell structure, the active cell structure includes pull rod, adjusting collar, first iron core, fixed cover, second iron core and clutch blocks, the both ends of first iron core are established at the middle part of pull rod respectively with adjusting collar and fixed cover welding back cover, wherein the adjusting collar still with the pull rod spiro union, establish the one end at the pull rod after the one end of second iron core and the clutch blocks welding, wherein the clutch blocks still with the tip spiro union of pull rod.
Preferably, the end of the friction block is provided with a straight groove.
The invention also discloses an adjusting method of the rotor structure of the series dual-redundancy linear displacement sensor, which comprises the following steps: step 1, welding two ends of a first iron core with an adjusting sleeve and a fixed sleeve respectively, sleeving the two ends of the first iron core in the middle of a pull rod after welding, and screwing the two ends of the first iron core on the pull rod through the adjusting sleeve; step 2, calculating the moving distance of the first iron core when the adjusting sleeve rotates for one circle through the thread pitch of the threads between the adjusting sleeve and the pull rod, and marking the moving distance on the first iron core; step 3, testing a first coil of the sensor, and simultaneously rotating the adjusting sleeve to move the first iron core until the test is qualified; step 4, welding one end of the second iron core with a friction block, sleeving one end of the pull rod after welding, and screwing the end of the pull rod with the friction block;
Preferably, in the step 3, after the first thread packet passes the test, glue is coated on the pull rod on the left side of the adjusting sleeve for fixing or the first thread packet is temporarily fixed through the thread seal tape; and 6, after the second thread pack is tested to be qualified, the second iron core is coated with glue for fixation or is temporarily fixed through the thread seal tape.
After the scheme is adopted, the adjusting sleeve and the friction block are in threaded connection with the pull rod, and when the adjusting device is tested and adjusted, the adjusting sleeve and the friction block are rotated, so that the first iron core and the second iron core cannot be abraded; the number of rotating circles of the adjusting sleeve and the friction block is directly calculated according to the thread pitch of the threads, and the first iron core and the second iron core are accurately moved without being disassembled and assembled for many times; therefore, the use failure rate and the production cost of the sensor can be reduced, and the service life and the yield of the sensor can be improved.
Drawings
FIG. 1 is a cross-sectional view of a preferred embodiment of the present invention.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1, a preferred embodiment of a rotor structure of a serial dual-redundancy linear displacement sensor according to the present invention includes a pull rod 1, an adjusting sleeve 2, a first iron core 3, a fixing sleeve 4, a second iron core 5, and a friction block 6, wherein two ends of the first iron core 3 are respectively welded with the adjusting sleeve 2 and the fixing sleeve 4 and then sleeved on a middle portion of the pull rod 1, the adjusting sleeve 2 is further screwed with the pull rod 1, one end of the second iron core 5 is welded with the friction block 6 and then sleeved on one end of the pull rod 1, and the friction block 6 is further screwed with an end portion of the pull rod 1.
The end of the friction block 6 is provided with a straight groove 61. By providing the linear groove 61, the friction block 6 can be screwed by means of a linear screwdriver, facilitating the rotational adjustment of the friction block 6.
The invention also discloses an adjusting method of the rotor structure of the series dual-redundancy linear displacement sensor, which comprises the following steps:
and 7, after the test is qualified, welding one ends of the fixed sleeve 4 opposite to the second iron core 5 on the pull rod 1.
The key point of the invention is that the adjusting sleeve 2 and the friction block 6 are in threaded connection with the pull rod 1, and when in test and adjustment, the adjusting sleeve 2 and the friction block 6 are rotated, so that the first iron core 3 and the second iron core 5 cannot be abraded; the number of rotating circles of the adjusting sleeve 2 and the friction block 6 is directly calculated according to the thread pitch of the threads, and the first iron core 3 and the second iron core 5 are accurately moved without being disassembled and assembled for many times; therefore, the use failure rate and the production cost of the sensor can be reduced, and the service life and the yield of the sensor can be improved.
In the step 3, after the first line pack is tested to be qualified, glue is coated on the pull rod 1 on the left side of the adjusting sleeve 2 for fixing or the pull rod is temporarily fixed through the thread seal tape; in step 6, after the second thread pack is tested to be qualified, the second iron core 5 is coated with glue for fixation or is temporarily fixed through the thread seal tape. Through the temporary fixation to adjusting collar 2 and second iron core 5, can avoid taking place rotatory aversion before the welded fastening, further improvement sensor's yields.
The foregoing description of specific exemplary embodiments of the invention has been presented for the purposes of illustration and description and is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as may be appropriate to those skilled in the art without departing from the scope of the invention.
Claims (4)
1. The utility model provides a connection dual redundancy linear displacement sensor's active cell structure which characterized in that: the active cell structure includes pull rod, adjusting collar, first iron core, fixed cover, second iron core and clutch blocks, the middle part at the pull rod is established with adjusting collar and fixed cover welding back cover respectively in the both ends of first iron core, wherein the adjusting collar still with the pull rod spiro union, the one end at the pull rod is established with clutch blocks welding back cover to the one end of second iron core, wherein the clutch blocks still with the tip spiro union of pull rod.
2. The mover structure of a serial dual-redundancy linear displacement sensor as claimed in claim 1, wherein: the end of the friction block is provided with a straight groove.
3. A method for adjusting a rotor structure of a series dual-redundancy linear displacement sensor is characterized by comprising the following steps: which comprises the following steps:
step 1, welding two ends of a first iron core with an adjusting sleeve and a fixed sleeve respectively, sleeving the two ends of the first iron core in the middle of a pull rod after welding, and screwing the two ends of the first iron core on the pull rod through the adjusting sleeve;
step 2, calculating the moving distance of the first iron core when the adjusting sleeve rotates for one circle through the thread pitch of the threads between the adjusting sleeve and the pull rod, and marking the moving distance on the first iron core;
step 3, testing a first coil of the sensor, and simultaneously rotating the adjusting sleeve to move the first iron core until the test is qualified;
step 4, welding one end of the second iron core with a friction block, sleeving one end of the pull rod after welding, and screwing the end of the pull rod with the friction block;
step 5, calculating the moving distance of the second iron core when the friction block rotates for one circle through the thread pitch of the threads between the friction block and the pull rod, and marking the moving distance on the second iron core;
step 6, testing a second coil of the sensor, and simultaneously rotating the friction block to move the second iron core until the test is qualified;
and 7, after the test is qualified, welding one ends of the fixed sleeve and the second iron core which are opposite to each other on the pull rod.
4. A method of adjusting a mover structure of a serial dual-redundancy linear displacement sensor as claimed in claim 3, wherein: in the step 3, after the first line pack is tested to be qualified, glue is coated on the pull rod on the left side of the adjusting sleeve for fixing or the first line pack is temporarily fixed through the thread seal tape; and 6, after the second thread pack is tested to be qualified, the second iron core is coated with glue for fixation or is temporarily fixed through the thread seal tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210115617.2A CN114440813A (en) | 2022-02-07 | 2022-02-07 | Rotor structure of series dual-redundancy linear displacement sensor and adjusting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210115617.2A CN114440813A (en) | 2022-02-07 | 2022-02-07 | Rotor structure of series dual-redundancy linear displacement sensor and adjusting method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114440813A true CN114440813A (en) | 2022-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210115617.2A Pending CN114440813A (en) | 2022-02-07 | 2022-02-07 | Rotor structure of series dual-redundancy linear displacement sensor and adjusting method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571477A (en) * | 2016-03-15 | 2016-05-11 | 北京星空建腾电子科技有限公司 | Magnetic core component of linear displacement sensor |
| US20180120081A1 (en) * | 2016-10-27 | 2018-05-03 | InstruMMents, Inc. | Measuring devices with attachable accessories and methods of using the same |
| US20180252553A1 (en) * | 2017-03-01 | 2018-09-06 | Honeywell International Inc. | Linear variable differential transformer (lvdt) calibration mechanism for precision rigging with vibration and accuracy tracking robustness |
| CN210719001U (en) * | 2019-11-05 | 2020-06-09 | 北京曙光航空电气有限责任公司 | Rotor structure of series dual-redundancy linear displacement sensor |
| CN112304205A (en) * | 2020-11-28 | 2021-02-02 | 陕西航宇星测科技有限公司 | Wear-proof differential type linear displacement sensor iron core rod assembly |
-
2022
- 2022-02-07 CN CN202210115617.2A patent/CN114440813A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571477A (en) * | 2016-03-15 | 2016-05-11 | 北京星空建腾电子科技有限公司 | Magnetic core component of linear displacement sensor |
| US20180120081A1 (en) * | 2016-10-27 | 2018-05-03 | InstruMMents, Inc. | Measuring devices with attachable accessories and methods of using the same |
| US20180252553A1 (en) * | 2017-03-01 | 2018-09-06 | Honeywell International Inc. | Linear variable differential transformer (lvdt) calibration mechanism for precision rigging with vibration and accuracy tracking robustness |
| CN210719001U (en) * | 2019-11-05 | 2020-06-09 | 北京曙光航空电气有限责任公司 | Rotor structure of series dual-redundancy linear displacement sensor |
| CN112304205A (en) * | 2020-11-28 | 2021-02-02 | 陕西航宇星测科技有限公司 | Wear-proof differential type linear displacement sensor iron core rod assembly |
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Application publication date: 20220506 |