CN111007343B - Pull-out type nut sensor for aviation teaching model - Google Patents
Pull-out type nut sensor for aviation teaching model Download PDFInfo
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- CN111007343B CN111007343B CN201911365652.4A CN201911365652A CN111007343B CN 111007343 B CN111007343 B CN 111007343B CN 201911365652 A CN201911365652 A CN 201911365652A CN 111007343 B CN111007343 B CN 111007343B
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- 239000003292 glue Substances 0.000 claims description 18
- 230000009471 action Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000011897 real-time detection Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 description 7
- 238000012549 training Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B9/00—Simulators for teaching or training purposes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Toys (AREA)
Abstract
The invention provides a pull-out type nut sensor for an aviation teaching model, which comprises a screw, a screw sleeve, a spring fixing nut, a shell sleeve, an insulating rubber plug, a conductive touch plate and a conductive contact pin, wherein the screw is arranged on the screw sleeve; the screw rod comprises a first thread section, a flat key section and a second thread section which are integrally connected along the axial direction; the axis of the screw sleeve is provided with a through hole, the section shape of the through hole of the screw sleeve is matched with the section shape of the flat key section of the screw, so that the flat key section of the screw is fixed in the radial direction and the circumferential direction in the through hole of the screw sleeve, and the flat key section of the screw can axially move in the through hole of the screw sleeve. The invention has the advantages of simple structure, convenient use and accurate and rapid detection. The components of the invention have simple and ingenious constitution and assembly relationship, and the overall manufacturing cost of the sensor is greatly reduced; real-time detection and signal feedback in the teaching practice process are realized, precious teaching time is greatly saved, and teaching efficiency is greatly improved.
Description
Technical Field
The invention relates to the field of teaching model design, in particular to a pull-out nut sensor for an aviation teaching model.
Background
The inspection and maintenance of civil aircraft plays a key role in maintaining the safety and punctuation rate of the aircraft, and the aeroengine is a serious issue of operation assurance as an 'aircraft heart'.
The disassembly, assembly and maintenance of the aeroengine are one of important practical courses of aviation institutions and are also necessary skills of aeroengine maintenance personnel. In daily teaching training courses, in order to reduce cost, related teaching practices are needed by means of a civil aviation engine maintenance training teaching model.
The intelligent training teaching model for civil aviation engine maintenance will become a development trend, and one of the large intelligent targets of the training teaching model for civil aviation engine maintenance is to monitor the disassembly and assembly process of a plurality of components on the model engine, and one of the methods for monitoring the disassembly and assembly process is to extract an operation signal at an operation point of the disassembly and assembly process. Among them, nuts are a kind of fastening member commonly used in teaching models and extremely important. However, in the existing teaching model, there are no detection components related to the operation of the nut, and there are a plurality of unreasonable detection components related to the nut in other applications; some of the structures are too complex, so that the manufacturing cost of the teaching model is greatly increased, and the wide popularization is not facilitated; some of the nuts need to be detected by means of additional equipment after the fastening operation of the nuts is completed, so that whether the nuts are completely fastened in place or not is confirmed, the nuts are not convenient to use, and precious teaching time is easy to delay.
In summary, in the civil aviation engine maintenance training teaching model in the prior art, the assembly and disassembly detection parts of the nuts still need to be further improved and perfected.
Disclosure of Invention
In view of the above, it is necessary to provide a pull-out nut sensor for an aeronautical teaching model, which has the advantages of simple structure, convenient use and accurate and rapid detection, aiming at the problems existing in the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
A pull-out nut sensor for an aviation teaching model comprises a screw, a screw sleeve, a spring fixing nut, a shell sleeve, an insulating glue plug, a conductive touch plate and a conductive contact pin;
The screw comprises a first thread section, a flat key section and a second thread section which are connected in an integral mode along the axial direction, the sectional areas of the first thread section, the flat key section and the second thread section are sequentially reduced, external threads are arranged on the outer surfaces of the first thread section and the second thread section, and the section of the flat key section is polygonal;
the shaft center of the screw sleeve is provided with a through hole, the screw sleeve is sleeved into the flat key section from the tail end of the second thread section on the screw, the section shape of the through hole of the screw sleeve is matched with that of the flat key section of the screw, so that the flat key section of the screw is fixed in the radial direction and the circumferential direction in the through hole of the screw sleeve and can axially move in the through hole of the screw sleeve;
The spring fixing nut is connected to the second thread section of the screw rod in a threaded manner; the spring is sleeved on the flat key section of the screw rod and is arranged between the screw rod sleeve and the spring fixing nut, and two ends of the spring are respectively propped against the end surfaces of the screw rod sleeve and the spring fixing nut, so that the screw rod and the screw rod sleeve can elastically and relatively move along the axial direction;
The axis of the shell sleeve is communicated to form a cavity, the screw sleeve is fixed at one end of the shell sleeve cavity, and the insulating rubber plug is fixed at the other end of the shell sleeve cavity; the diameter of the cavity is larger than the diameters of the screw sleeve, the spring fixing nut and the insulating rubber plug;
In the cavity of the shell sleeve, the end face of the second thread section of the screw rod is arranged opposite to the insulating rubber plug; two conductive contact pins are fixed in the insulating glue plug, and two ends of each conductive contact pin are exposed out of two ends of the insulating glue plug respectively; the end face of the second thread section of the screw rod is fixedly connected with a conductive touch plate; the conductive contact plate and the two conductive contact pins are oppositely arranged, so that the conductive contact plate can be simultaneously contacted with the end parts of the two conductive contact pins in a state that the springs are free to stretch under the action of external force.
Further, an inner thread is arranged on the inner wall of the cavity of the shell sleeve, an outer thread is arranged on the outer surface of the screw rod sleeve, and one end of the screw rod sleeve, facing the spring, is fixedly connected to the inner wall of the shell sleeve through threads.
Further, an internal thread is arranged on the inner wall of the cavity of the shell sleeve, an external thread is arranged on the side face of the insulating rubber plug, and the insulating rubber plug is fixedly connected to the inner wall of the shell sleeve through threads.
Further, the section of the flat key section in the screw rod is rectangular; the section of the through hole at the axis of the screw sleeve is also rectangular and is matched with the section of the flat key section in the screw.
Further, a fixing hole is formed in the end face of one end of the second thread section in the screw; the one side that electrically conductive touch board towards the screw rod is equipped with convex fixed column, and electrically conductive touch board inserts in the fixed orifices through the fixed column, and then is fixed in the terminal surface of second screw thread section.
Further, the conductive contact pins are telescopic conductive contact pins, and telescopic ends of the telescopic conductive contact pins are arranged towards the conductive contact plates.
Further, the two conductive contact pins are symmetrically arranged around the axis of the insulating glue plug, and the conductive contact plate is arranged at the center of the end face of the second thread section in the screw rod.
Further, a plurality of planes for circumferential screwing are arranged on the outer surface of one end of the shell sleeve, which is provided with the insulating glue plug.
The pull-out nut sensor for the aviation teaching model has the advantages of being simple in structure, convenient to use and accurate and rapid to detect. The components of the invention have simple and ingenious constitution and assembly relationship, and the overall manufacturing cost of the sensor is greatly reduced; when the nut fastening detection work is carried out, the detection work can be finished only by virtue of the self signal detection circuit and the self signal detection circuit of the teaching model, and additional tools or equipment are not needed, so that real-time detection and signal feedback in the teaching practice process are realized, precious teaching time is greatly saved, and the teaching efficiency is greatly improved.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a pull-out nut sensor for an aeronautical teaching model according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view of a pull-out nut sensor for use in an aeronautical teaching model according to an embodiment of the present invention.
Detailed Description
The technical scheme of the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the pull-out nut sensor for the aviation teaching model provided by the invention comprises a screw 1, a screw sleeve 2, a spring 3, a spring fixing nut 4, a shell sleeve 5, an insulating rubber plug 6, a conductive contact pin 8 and a conductive contact plate 7.
Specifically, the screw 1 comprises a first thread section, a flat key section and a second thread section which are connected in an integral forming way along the axial direction, and the sectional areas of the first thread section, the flat key section and the second thread section are sequentially reduced, so that the screw 1 is integrally cylindrical in steps. The outer surfaces of the first thread section and the second thread section are provided with external threads, and the cross section of the flat key section is polygonal.
The axis of the screw sleeve 2 is provided with a through hole, the screw sleeve 2 is sleeved at the flat key section from the tail end of the second thread section on the screw 1, the section of the through hole of the screw sleeve 2 is identical to that of the flat key section of the screw 1 in shape and size, the flat key section of the screw 1 is fixed in the radial direction and the circumferential direction in the through hole of the screw sleeve 2, and the flat key section of the screw 1 can only move in the axial direction in the through hole of the screw sleeve. In this embodiment, the section of the flat key section in the screw 1 is rectangular, and the section of the through hole at the axis of the screw sleeve 2 is also rectangular; in other embodiments, the shape of the flat key segment and the through hole may also be a matched pentagon or hexagon, etc., with the purpose of enabling the two to mutually nest axially and relatively move and not relatively rotate.
The spring fixing nut 4 is connected to the second thread section of the screw rod 1 in a threaded manner; the spring 3 is sleeved on the flat key section of the screw 1 and is arranged between the screw sleeve 2 and the spring fixing nut 4, and two ends of the spring 3 respectively abut against the end faces of the screw sleeve 2 and the spring fixing nut 4, so that the screw 1 and the screw sleeve 2 can elastically and relatively move along the axial direction.
The axis of the shell sleeve 5 is communicated to form a cavity, the screw sleeve 2 is fixed at one end of the shell sleeve cavity 5, and the insulating rubber plug 6 is fixed at the other end of the shell sleeve 5 cavity. The diameter of the cavity is larger than that of the screw sleeve 2, the spring 3, the spring fixing nut 4 and the insulating rubber plug 6, and the components are accommodated in the cavity. Specifically, an internal thread is arranged on the inner wall of the cavity of the shell sleeve 5, an external thread is arranged on the outer surface of the screw sleeve 2, one end of the screw sleeve 2 facing the spring 3 is fixedly connected to the inner wall of the shell sleeve 5 through threads, and the other end of the screw sleeve 2 is exposed out of the shell sleeve 5; the side of the insulating glue plug 6 is provided with external threads, and the insulating glue plug 6 is fixedly connected to the inner wall of the shell sleeve 5 through threads.
In the cavity of the shell sleeve 5, the end face of the second thread section of the screw 1 is opposite to the insulating rubber plug 6; two conductive contact pins 8 are fixed in the insulating glue plug 6, and two ends of the conductive contact pins 8 are respectively exposed at two ends of the insulating glue plug 6. The end face of the second thread section of the screw 1 is fixedly connected with a conductive contact plate 7; in this embodiment, a fixing hole is formed on an end surface of one end of the second thread section in the screw 1; the one side of electrically conductive touch panel 7 towards screw rod 1 is equipped with convex fixed column, and electrically conductive touch panel 7 inserts in the fixed orifices through the fixed column, and then is fixed in the terminal surface of second screw thread section.
Further, the conductive contact plate 7 is disposed opposite to the two conductive contact pins 8, so that in a state that the spring 3 is free to stretch without being acted by external force, the conductive contact plate 7 can simultaneously contact with the ends of the two conductive contact pins 8, so that the two conductive contact pins 8 are electrically connected. In this embodiment, the two conductive contact pins 8 are symmetrically arranged around the axis of the insulating glue plug 6, and the conductive contact plate 7 is arranged at the center of the end face of the second thread section in the screw 1.
As a modification, the conductive contact pins 8 are telescopic conductive contact pins, the telescopic ends of which are arranged towards the conductive contact plates 7. The telescopic conductive contact pins 8 can provide a certain free movement space for the conductive contact plates 7 and a certain buffer, prevent the conductive contact pins 8 from being damaged in the process of moving the conductive contact plates 7 to the conductive contact pins 8, and improve the connection tightness of the conductive contact pins 8 and the conductive contact plates 7.
In the present invention, the portion of the screw sleeve 2 exposed to the housing sleeve 5 is used to mount the sensor as a whole to the housing of the teaching model. As an improvement, a plurality of planes for circumferential screwing are also arranged on the outer surface of one end of the shell sleeve 5, which is provided with the insulating rubber plug 6; the sensor is designed to be similar to the polygonal shape of the outer ring of the nut and is used for being matched with tools such as a spanner, so that the sensor is more convenient and faster to install on the teaching model.
When the invention is used, the sensor is integrally arranged on the teaching model, the exposed terminal of the conductive contact pin 8 is connected with the electric signal detection circuit, and the first thread section of the screw 1 is an operation point which requires a student to operate the nut screwing operation. When the nut is screwed into the first thread section of the screw 1 and the root of the nut abuts against the screw sleeve 2, the screw 1 is pulled out from the screw sleeve 2 little by little along with the continuous screwing of the nut, the spring 3 is gradually compressed along with the pulling-out of the screw 1, and the conductive contact plate 7 moves outwards along with the pulling-out of the screw 1; finally, the conductive contact 7 is separated from the conductive contact pin 8, so that the conductive contact pin 8 transmits an opening signal to the electric signal detection circuit. When the nut is screwed out from the first thread section of the screw rod 1, the spring 3 gradually resets and pushes the spring fixing nut 4 inwards, so that the screw rod 1 and the conductive contact plate 7 are driven to move towards the conductive contact pin 8; finally, the conductive contact plate 7 is contacted with the two conductive contact pins 8, so that the two conductive contact pins 8 are electrically connected, and a closing signal is transmitted to the electric signal detection circuit.
As an improvement, the conductive contact pin 8 in the insulating glue plug 6 can be replaced by a pressure sensor, so that the position sensing of the screw 1 can be realized, and the mounting and dismounting actions of the nut can be detected.
The pull-out nut sensor for the aviation teaching model has the advantages of being simple in structure, convenient to use and accurate and rapid to detect. The components of the invention have simple and ingenious constitution and assembly relationship, and the overall manufacturing cost of the sensor is greatly reduced; when the nut fastening detection work is carried out, the detection work can be finished only by virtue of the self signal detection circuit and the self signal detection circuit of the teaching model, and additional tools or equipment are not needed, so that real-time detection and signal feedback in the teaching practice process are realized, precious teaching time is greatly saved, and the teaching efficiency is greatly improved.
In addition, the invention adopts a contact detection mode of the conductive touch plate and the telescopic conductive contact pin, and the feedback of signals is accurate and timely. When the initial relative positions of the conductive touch plate and the conductive contact pin are required to be adjusted to change the sensitivity of the sensor, the sensor can be realized by only rotating the insulating glue plug, and the sensor can be flexibly suitable for different teaching models and different teaching scenes.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (8)
1. The pull-out nut sensor for the aviation teaching model is characterized by comprising a screw, a screw sleeve, a spring fixing nut, a shell sleeve, an insulating rubber plug, a conductive touch plate and a conductive contact pin;
The screw comprises a first thread section, a flat key section and a second thread section which are connected in an integral mode along the axial direction, the sectional areas of the first thread section, the flat key section and the second thread section are sequentially reduced, external threads are arranged on the outer surfaces of the first thread section and the second thread section, and the section of the flat key section is polygonal;
the shaft center of the screw sleeve is provided with a through hole, the screw sleeve is sleeved into the flat key section from the tail end of the second thread section on the screw, the section shape of the through hole of the screw sleeve is matched with that of the flat key section of the screw, so that the flat key section of the screw is fixed in the radial direction and the circumferential direction in the through hole of the screw sleeve and can axially move in the through hole of the screw sleeve;
The spring fixing nut is connected to the second thread section of the screw rod in a threaded manner; the spring is sleeved on the flat key section of the screw rod and is arranged between the screw rod sleeve and the spring fixing nut, and two ends of the spring are respectively propped against the end surfaces of the screw rod sleeve and the spring fixing nut, so that the screw rod and the screw rod sleeve can elastically and relatively move along the axial direction;
The axis of the shell sleeve is communicated to form a cavity, the screw sleeve is fixed at one end of the shell sleeve cavity, and the insulating rubber plug is fixed at the other end of the shell sleeve cavity; the diameter of the cavity is larger than the diameters of the screw sleeve, the spring fixing nut and the insulating rubber plug;
In the cavity of the shell sleeve, the end face of the second thread section of the screw rod is arranged opposite to the insulating rubber plug; two conductive contact pins are fixed in the insulating glue plug, and two ends of each conductive contact pin are exposed out of two ends of the insulating glue plug respectively; the end face of the second thread section of the screw rod is fixedly connected with a conductive touch plate; the conductive contact plate and the two conductive contact pins are oppositely arranged, so that the conductive contact plate can be simultaneously contacted with the end parts of the two conductive contact pins in a state that the springs are free to stretch under the action of external force.
2. The pull-out nut sensor for an aeronautical teaching model according to claim 1, wherein the inner wall of the cavity of the housing sleeve is provided with an internal thread, the outer surface of the screw sleeve is provided with an external thread, and the end of the screw sleeve facing the spring is fixedly connected to the inner wall of the housing sleeve through threads.
3. The pull-out nut sensor for an aeronautical teaching model according to claim 1, wherein the inner wall of the cavity of the housing sleeve is provided with an internal thread, the side surface of the insulating glue plug is provided with an external thread, and the insulating glue plug is fixedly connected to the inner wall of the housing sleeve through threads.
4. The pull-out nut sensor for an aeronautical teaching model according to claim 1, wherein the section of the flat key section in the screw is rectangular; the section of the through hole at the axis of the screw sleeve is also rectangular and is matched with the section of the flat key section in the screw.
5. The pull-out nut sensor for an aeronautical teaching model according to claim 1, wherein a fixing hole is provided on an end face of one end of the second thread section in the screw; the one side that electrically conductive touch board towards the screw rod is equipped with convex fixed column, and electrically conductive touch board inserts in the fixed orifices through the fixed column, and then is fixed in the terminal surface of second screw thread section.
6. The pull-out nut sensor for an avionics model of claim 1, wherein the conductive contact pin is a telescoping conductive contact pin with a telescoping end disposed toward the conductive contact plate.
7. The pull-out nut sensor for an aeronautical teaching model according to claim 1, wherein the two conductive contact pins are symmetrically arranged around the axis of the insulating glue plug, and the conductive contact plate is arranged at the center of the end face of the second thread section in the screw.
8. The pull-out nut sensor for an aeronautical teaching model according to claim 1, wherein a plurality of planes for circumferential screwing are arranged on the outer surface of the end of the housing sleeve, on which the insulating glue plug is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911365652.4A CN111007343B (en) | 2019-12-26 | 2019-12-26 | Pull-out type nut sensor for aviation teaching model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911365652.4A CN111007343B (en) | 2019-12-26 | 2019-12-26 | Pull-out type nut sensor for aviation teaching model |
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| Publication Number | Publication Date |
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| CN111007343A CN111007343A (en) | 2020-04-14 |
| CN111007343B true CN111007343B (en) | 2024-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911365652.4A Active CN111007343B (en) | 2019-12-26 | 2019-12-26 | Pull-out type nut sensor for aviation teaching model |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211785847U (en) * | 2019-12-26 | 2020-10-27 | 广州市一飞科技有限公司 | Pull-out nut sensor for aviation teaching model |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011010155A1 (en) * | 2011-02-02 | 2012-08-02 | Neutrik Aktiengesellschaft | Jack socket for producing an electrical plug connection |
| CN107782546A (en) * | 2017-10-16 | 2018-03-09 | 如皋沐晨塑胶制品有限公司 | A kind of measurement apparatus for locking nut press-in plastic parts |
| CN207540471U (en) * | 2017-11-24 | 2018-06-26 | 四川凌峰航空液压机械有限公司 | Oscillating bearing gap detection device |
| CN207816574U (en) * | 2017-12-13 | 2018-09-04 | 浙江中烟工业有限责任公司 | A kind of device of detection nut loosening |
| CN110285972A (en) * | 2019-06-25 | 2019-09-27 | 西北工业大学 | A kind of aero-engine tester touches rub device and rub experiment method |
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2019
- 2019-12-26 CN CN201911365652.4A patent/CN111007343B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211785847U (en) * | 2019-12-26 | 2020-10-27 | 广州市一飞科技有限公司 | Pull-out nut sensor for aviation teaching model |
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