CN101968338A - LVDT active cell assembly - Google Patents
LVDT active cell assembly Download PDFInfo
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- CN101968338A CN101968338A CN2010102809262A CN201010280926A CN101968338A CN 101968338 A CN101968338 A CN 101968338A CN 2010102809262 A CN2010102809262 A CN 2010102809262A CN 201010280926 A CN201010280926 A CN 201010280926A CN 101968338 A CN101968338 A CN 101968338A
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- adapter
- connector
- contact ball
- blind hole
- lvdt
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Abstract
The invention belongs to an LVDT design technique, and relates to structural improvement of an LVDT active cell assembly. The LVDT active cell assembly comprises a connector [1] and two cylindrical iron cores [2], and is characterized in that a ring-shaped convex plate [1a] is arranged on the connecting shaft of the connector [1]; a central tapped blind hole [1b] is arranged on the right end face of the connector [1]; two angular contact ball bearings are arranged on the connecting shaft of the connector [1]; a changeover mechanism is arranged on the right end face of the inner ring of the right angular contact ball bearing compressed by a tightening screw [8] and a gasket [7], wherein, the changeover mechanism is composed of an adapter [3], a sunk screw [4] and a compression ring [5]; the outer ring of the angular contact ball bearing is positioned in the stepped blind hole of the adapter [3]; the compression ring [5] compresses the left end face of the left angular contact ball bearing; and the right section of the adapter [3] is an adapter connecting shaft with external threads. When in installation, the LVDT active cell assembly of the invention does not influence the iron core magnetic property and has high-efficiency installation.
Description
Technical field
The invention belongs to the LVDT designing technique, relate to improvement LVDT mover assembly structure.
Background technology
The mover assembly structure that existing linear variable differential transformer (LVDT) formula displacement transducer is LVDT is: it is made up of connector and two columniform iron cores, connector is made up of the web joint on the left side and the coupling shaft on the right, the right centre of surface of the left end of coupling shaft and web joint is connected to integral body, respectively there is a threaded hole at plate face two ends at web joint, the vertical center line coplane of the axis of two threaded holes and web joint, the right-hand member of two iron cores has screw thread, be screwed in two threaded holes of web joint respectively and be welded as integral body, have the external thread that is connected with measured member on the coupling shaft on connector the right.LVDT before the use, needs to adjust mechanical zero to guarantee initial zero condition after installation.The shortcoming of the mover assembly structure of above-mentioned LVDT is: the first, along with the externally threaded adjustment of connector, iron core is and then rotation rotation also, and easy and stator assembly inwall rubs, collides with, and influences the iron core magnetic property, and then influences the output performance of LVDT; The second, need be along with the process of installing, the mechanical zero adjustment is constantly carried out in dismounting repeatedly, wastes time and energy, and installation effectiveness is low.
Summary of the invention
The objective of the invention is: do not influence iron core magnetic property, LVDT mover assembly that installation effectiveness is high when proposing a kind of the installation.
Technical scheme of the present invention is: a kind of LVDT mover assembly, comprise connector and two columniform iron cores, connector is made up of the web joint on the left side and the coupling shaft on the right, the right centre of surface of the left end of coupling shaft and web joint is connected to integral body, respectively there is a threaded hole at plate face two ends at web joint, the vertical center line coplane of the axis of two threaded holes and web joint, the right-hand member of two iron cores has screw thread, is screwed in two threaded holes of web joint respectively and is welded as integral body; It is characterized in that: on the coupling shaft of connector, near the position of web joint a cross section to be arranged be the annular boss of rectangle, and a center tapped blind hole is arranged on the right side of connector coupling shaft; Two angular contact ball bearings are installed on the coupling shaft of connector back-to-back and keep clearance fit, in the angular contact ball bearing on the left side fit in the right side of the left side of ring and annular boss, trip bolt is screwed in the tapped blind hole of connector right side after passing pad, and pad compresses the right side of ring in the right corner contact ball bearing; There is one by adapter, the changeover mechanism that sunk screw and pressure ring are formed, the profile of adapter is the step axle of left side section diameter greater than right section, a center step blind hole is arranged in the left side of adapter, the left side section diameter of this step blind hole is greater than right section, the outer shroud of two angular contact ball bearings is positioned at the left side section of above-mentioned step blind hole and keeps clearance fit, the right side of right corner contact ball bearing outer shroud and the step end face of above-mentioned step blind hole are fitted, pressure ring is an annulus, the sunk screw hole is arranged on the anchor ring of pressure ring, on the left side of adapter, threaded hole is arranged, pressure ring is fixed on the left side of adapter by sunk screw, the right side of pressure ring compresses the left side of the angular contact ball bearing outer shroud on the left side; The right section of adapter is to have externally threaded adapter coupling shaft.
Advantage of the present invention is: do not influence iron core magnetic property, installation effectiveness height during installation.When the LVDT installation, can utilize the rotation adapter to reach the purpose of direct adjustment mechanical zero, saved the process that many dismountings are adjusted, improved installation effectiveness greatly.Evidence, installation effectiveness of the present invention has improved more than 3 times.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Below the present invention is described in further details.Referring to Fig. 1, a kind of LVDT mover assembly, comprise connector 1 and two columniform iron cores 2, connector 1 is made up of the web joint on the left side and the coupling shaft on the right, the right centre of surface of the left end of coupling shaft and web joint is connected to integral body, at the plate face two ends of web joint a threaded hole is arranged respectively, the vertical center line coplane of the axis of two threaded holes and web joint, the right-hand member of two iron cores 2 has screw thread, is screwed in two threaded holes of web joint respectively and is welded as integral body; It is characterized in that: on the coupling shaft of connector 1, near the position of the web joint annular boss 1a that a cross section is arranged is rectangle, a center tapped blind hole 1b is arranged on the right side of connector 1 coupling shaft; Two angular contact ball bearings are installed on the coupling shaft of connector 1 back-to-back and keep clearance fit, in the angular contact ball bearing on the left side fit in the right side of the left side of ring and annular boss 1a, trip bolt 8 is screwed among the tapped blind hole 1b of connector 1 right side after passing pad 7, and pad 7 compresses the right side of ring in the right corner contact ball bearing; There is one by adapter 3, the changeover mechanism that sunk screw 4 and pressure ring 5 are formed, the profile of adapter 3 is left side section diameter step axles greater than right section, a center step blind hole is arranged in the left side of adapter 3, the left side section diameter of this step blind hole is greater than right section, the outer shroud of two angular contact ball bearings is positioned at the left side section of above-mentioned step blind hole and keeps clearance fit, the right side of right corner contact ball bearing outer shroud and the step end face of above-mentioned step blind hole are fitted, pressure ring 5 is annulus, the sunk screw hole is arranged on the anchor ring of pressure ring 5, on the left side of adapter 3, threaded hole is arranged, pressure ring 5 is fixed on the left side of adapter 3 by sunk screw 4, the right side of pressure ring 5 compresses the left side of the angular contact ball bearing outer shroud on the left side; The right section of adapter 3 is to have externally threaded adapter coupling shaft.
Principle of work of the present invention is: when the LVDT installation, can utilize the rotation adapter to reach the purpose of direct adjustment mechanical zero, avoided along with the externally threaded adjustment of connector, iron core is and then rotation rotation also, the phenomenon that causes iron core and stator assembly inwall to rub, collide with has guaranteed the output performance of LVDT; Save the process of many dismountings, installation, adjustment simultaneously, improved the efficient that mechanical zero is adjusted greatly.
Claims (1)
1. LVDT mover assembly, comprise connector [1] and two columniform iron cores [2], connector [1] is made up of the web joint on the left side and the coupling shaft on the right, the right centre of surface of the left end of coupling shaft and web joint is connected to integral body, respectively there is a threaded hole at plate face two ends at web joint, the vertical center line coplane of the axis of two threaded holes and web joint, the right-hand member of two iron cores [2] has screw thread, is screwed in two threaded holes of web joint respectively and is welded as integral body; It is characterized in that: on the coupling shaft of connector [1], near the position of web joint a cross section to be arranged be the annular boss of rectangle [1a], and a center tapped blind hole [1b] is arranged on the right side of connector [1] coupling shaft; Two angular contact ball bearings are installed on the coupling shaft of connector [1] back-to-back and keep clearance fit, in the angular contact ball bearing on the left side fit in the right side of the left side of ring and annular boss [1a], trip bolt [8] is screwed in the tapped blind hole [1b] of connector [1] right side after passing pad [7], and pad [7] compresses the right side of ring in the right corner contact ball bearing; There is one by adapter [3], the changeover mechanism that sunk screw [4] and pressure ring [5] are formed, the profile of adapter [3] is the step axle of left side section diameter greater than right section, a center step blind hole is arranged in the left side of adapter [3], the left side section diameter of this step blind hole is greater than right section, the outer shroud of two angular contact ball bearings is positioned at the left side section of above-mentioned step blind hole and keeps clearance fit, the right side of right corner contact ball bearing outer shroud and the step end face of above-mentioned step blind hole are fitted, pressure ring [5] is an annulus, the sunk screw hole is arranged on the anchor ring of pressure ring [5], on the left side of adapter [3], threaded hole is arranged, by sunk screw [4] pressure ring [5] is fixed on the left side of adapter [3], the right side of pressure ring [5] compresses the left side of the angular contact ball bearing outer shroud on the left side; The right section of adapter [3] is to have externally threaded adapter coupling shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102809262A CN101968338A (en) | 2010-09-14 | 2010-09-14 | LVDT active cell assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102809262A CN101968338A (en) | 2010-09-14 | 2010-09-14 | LVDT active cell assembly |
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| Publication Number | Publication Date |
|---|---|
| CN101968338A true CN101968338A (en) | 2011-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102809262A Pending CN101968338A (en) | 2010-09-14 | 2010-09-14 | LVDT active cell assembly |
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| CN (1) | CN101968338A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748661A (en) * | 2015-04-17 | 2015-07-01 | 兰州理工大学 | Differential transformer type displacement sensor |
| CN105043231A (en) * | 2015-06-11 | 2015-11-11 | 北京精密机电控制设备研究所 | Installing mechanism for built-in plate type displacement sensor adapted to servo actuator |
| CN105466323A (en) * | 2015-12-09 | 2016-04-06 | 北京星空建腾电子科技有限公司 | A stator assembly of a multi-redundancy lineal displacement sensor |
| CN105547809A (en) * | 2016-01-05 | 2016-05-04 | 山东大学 | ECC axial tension test deformation monitoring system and method |
| CN107525460A (en) * | 2017-09-08 | 2017-12-29 | 武汉中航传感技术有限责任公司 | A kind of redundance LVDT mover assemblies and device |
| CN113790664A (en) * | 2021-09-03 | 2021-12-14 | 北京星空建腾电子科技有限公司 | Linear displacement sensor and rotor assembly thereof |
| CN114659438A (en) * | 2022-05-20 | 2022-06-24 | 山东华东风机有限公司 | Detection device and detection method for differential displacement sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2123751U (en) * | 1991-11-15 | 1992-12-02 | 水利水电科学研究院仪器研究所 | High-precision differential transformer displacement sensor |
| US6239713B1 (en) * | 1999-01-29 | 2001-05-29 | Lucas Industries Limited | Sensor mounting arrangement |
| CN2791596Y (en) * | 2005-05-13 | 2006-06-28 | 秦有权 | Differential transformer type displacement sensor |
| CN101451816A (en) * | 2008-12-19 | 2009-06-10 | 上海诺玛液压系统有限公司 | Test device of linear variable differential transformer displacement sensor |
-
2010
- 2010-09-14 CN CN2010102809262A patent/CN101968338A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2123751U (en) * | 1991-11-15 | 1992-12-02 | 水利水电科学研究院仪器研究所 | High-precision differential transformer displacement sensor |
| US6239713B1 (en) * | 1999-01-29 | 2001-05-29 | Lucas Industries Limited | Sensor mounting arrangement |
| CN2791596Y (en) * | 2005-05-13 | 2006-06-28 | 秦有权 | Differential transformer type displacement sensor |
| CN101451816A (en) * | 2008-12-19 | 2009-06-10 | 上海诺玛液压系统有限公司 | Test device of linear variable differential transformer displacement sensor |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748661A (en) * | 2015-04-17 | 2015-07-01 | 兰州理工大学 | Differential transformer type displacement sensor |
| CN105043231A (en) * | 2015-06-11 | 2015-11-11 | 北京精密机电控制设备研究所 | Installing mechanism for built-in plate type displacement sensor adapted to servo actuator |
| CN105466323A (en) * | 2015-12-09 | 2016-04-06 | 北京星空建腾电子科技有限公司 | A stator assembly of a multi-redundancy lineal displacement sensor |
| CN105547809A (en) * | 2016-01-05 | 2016-05-04 | 山东大学 | ECC axial tension test deformation monitoring system and method |
| CN105547809B (en) * | 2016-01-05 | 2018-05-29 | 山东大学 | ECC axial tension tests DEFORMATION MONITORING SYSTEM and method |
| CN107525460A (en) * | 2017-09-08 | 2017-12-29 | 武汉中航传感技术有限责任公司 | A kind of redundance LVDT mover assemblies and device |
| CN113790664A (en) * | 2021-09-03 | 2021-12-14 | 北京星空建腾电子科技有限公司 | Linear displacement sensor and rotor assembly thereof |
| CN114659438A (en) * | 2022-05-20 | 2022-06-24 | 山东华东风机有限公司 | Detection device and detection method for differential displacement sensor |
| CN114659438B (en) * | 2022-05-20 | 2022-08-05 | 山东华东风机有限公司 | Detection device and detection method for differential displacement sensor |
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Application publication date: 20110209 |