CN211785847U - Pull-out nut sensor for aviation teaching model - Google Patents
Pull-out nut sensor for aviation teaching model Download PDFInfo
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- CN211785847U CN211785847U CN201922383161.4U CN201922383161U CN211785847U CN 211785847 U CN211785847 U CN 211785847U CN 201922383161 U CN201922383161 U CN 201922383161U CN 211785847 U CN211785847 U CN 211785847U
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Abstract
The utility model provides a pull-out nut sensor for an aviation teaching model, which comprises a screw, a screw sleeve, a spring fixing nut, a shell sleeve, an insulating glue plug, a conductive touch panel and a conductive contact pin; the screw comprises a first thread section, a flat key section and a second thread section which are integrally formed and connected along the axial direction; the axial center of the screw sleeve is provided with a through hole, the cross 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 through hole of the screw sleeve in the radial direction and the circumferential direction and can move in the through hole of the screw sleeve in the axial direction. The utility model discloses possess simple structure, convenient to use, detect accurate swift advantage. The components of the utility model are simple and ingenious in assembly, 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 utility model relates to a teaching model design field, concretely relates to a pull-out formula nut sensor for aviation teaching model.
Background
Inspection and maintenance of civil aircrafts play a key role in maintaining safety, punctuality rate and the like of the aircrafts, and an aircraft engine is particularly important in guaranteeing operation as a heart of an aircraft.
The disassembly, assembly and maintenance of the aero-engine are one of important practice courses of aviation colleges and universities and are also necessary skills of maintenance personnel of the aero-engine. In daily teaching and training courses, in order to reduce cost, relevant teaching practices need to be carried out by means of a civil aviation engine maintenance practical training teaching model.
The intelligentization of the civil aviation engine maintenance practical training teaching model can become a development trend, the intelligentization target of the civil aviation engine maintenance practical training teaching model is the dismounting process of a plurality of parts on a monitoring model engine, and one of the methods for monitoring the dismounting process is that an operation signal can be extracted at an operation point. Among them, the nut is a fastening component which is commonly used and extremely important on teaching models. However, in the existing teaching model, a detection component related to the operation of the nut is not available, and in other applications, the detection component related to the nut is unreasonable; some structures are too complex, so that the manufacturing cost of the teaching model is greatly increased, and the teaching model is not suitable for wide popularization; some nuts need to be detected by means of additional equipment after the fastening operation of the nuts is completed so as to determine whether the nuts are completely fastened in place, so that the use is inconvenient, and valuable teaching time is easily delayed.
In summary, in the civil aviation engine maintenance practical training teaching model in the prior art, the dismounting detection component of the nut is yet to be further improved and perfected.
SUMMERY OF THE UTILITY MODEL
In view of this, it is necessary to provide a pull-out nut sensor for an aviation teaching model, which has the advantages of simple structure, convenient use, and accurate and fast detection.
In order to achieve the above purpose, the utility model 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 contact plate and a conductive contact pin, wherein the screw is fixedly connected with the shell sleeve;
the screw comprises a first thread section, a flat key section and a second thread section which are integrally formed and connected 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 in a polygonal shape;
a through hole is formed in the axis of the screw sleeve, the screw sleeve is sleeved from the tail end of the second thread section on the screw to the flat key section, and the cross 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 through hole of the screw sleeve in the radial direction and the circumferential direction and can move axially in the through hole of the screw sleeve;
the spring fixing nut is in threaded connection with the second threaded section of the screw; the spring is sleeved on the flat key section of the screw and arranged between the screw sleeve and the spring fixing nut, and two ends of the spring are respectively abutted against the end surfaces of the screw sleeve and the spring fixing nut, so that the screw and the screw sleeve can elastically and relatively move along the axial direction;
the axis of the shell sleeve penetrates through the cavity to form a cavity, the screw sleeve is fixed at one end of the cavity of the shell sleeve, and the insulating glue plug is fixed at the other end of the cavity of the shell sleeve; the diameter of the cavity is larger than the diameters of the screw sleeve, the spring fixing nut and the insulating glue plug;
in the cavity of the shell sleeve, the end surface of the second thread section of the screw 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 respectively exposed out of two ends of the insulating glue plug; the end surface of the second thread section of the screw is fixedly connected with a conductive touch plate; the conductive contact plate is arranged opposite to the two conductive contact pins, so that the conductive contact plate can be simultaneously contacted with the end parts of the two conductive contact pins under the condition that the spring is free to extend without being influenced by external force.
Further, be equipped with the internal thread on the telescopic cavity inner wall of shell, the telescopic surface of screw rod is equipped with the external screw thread, and screw rod sleeve passes through screw thread fixed connection in the telescopic inner wall of shell towards the one end of spring.
Furthermore, 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 glue plug, and the insulating glue plug is fixedly connected to the inner wall of the shell sleeve through the thread.
Further, the section of the flat key section in the screw rod is rectangular; the cross section of the through hole at the axis of the screw rod sleeve is also rectangular and is matched with the cross section of the flat key section in the screw rod.
Furthermore, a fixing hole is formed in the end face of one end of the second thread section in the screw; the one side of electrically conductive touch panel towards the screw rod is equipped with convex fixed column, and electrically conductive touch panel passes through the fixed column and inserts in the fixed orifices, and then is fixed in the terminal surface of second screw thread section.
Further, the conductive contact pin is a telescopic conductive contact pin, and a telescopic end of the telescopic conductive contact pin is arranged towards the conductive contact plate.
Furthermore, the two conductive contact pins are symmetrically arranged around the axis of the insulating glue plug, and the conductive contact plate is arranged in the center of the end face of the second thread section in the screw rod.
Furthermore, a plurality of planes for circumferential screwing are arranged on the outer surface of one end, provided with the insulating glue plug, of the outer shell sleeve.
The utility model provides a pair of a pull-out nut sensor for aviation teaching model, it possesses simple structure, convenient to use, detects accurate swift advantage. The components of the utility model are simple and ingenious in assembly, and the overall manufacturing cost of the sensor is greatly reduced; when the nut is fastened and detected, the detection work can be completed only by the aid of the signal detection circuit of the nut and the teaching model, and real-time detection and signal feedback in the teaching practice process are realized without the aid of additional tools or equipment, so that precious teaching time is greatly saved, and teaching efficiency is greatly improved.
Drawings
Fig. 1 is an overall structure schematic diagram of a pull-out nut sensor for an aviation teaching model provided by the embodiment of the present invention.
Fig. 2 is a cross-sectional view of a pull-out nut sensor for an aviation teaching model according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the utility model provides a pair of draw-out nut sensor for aviation teaching model, including screw rod 1, screw rod sleeve 2, spring 3, spring fixation nut 4, shell sleeve 5, insulating cement end cap 6, electrically conductive contact pin 8 and electrically conductive touch panel 7.
Specifically, the screw rod 1 comprises a first thread section, a flat key section and a second thread section which are integrally formed and connected 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 whole screw rod 1 is in a step cylinder shape. 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 in a polygonal shape.
The axial center of the screw sleeve 2 is provided with a through hole, the screw sleeve 2 is sleeved into the flat key section from the tail end of the second thread section on the screw 1, the cross section of the through hole of the screw sleeve 2 is the same as that of the flat key section of the screw 1 in size, the flat key section of the screw 1 is fixed in the through hole of the screw sleeve 2 in the radial direction and the circumferential direction, and the flat key section of the screw 1 can only move in the through hole of the screw sleeve in the axial direction. In the embodiment, the section of the flat key section in the screw 1 is rectangular, and the section of the through hole at the axle center of the screw sleeve 2 is also rectangular; in other embodiments, the flat key segment and the through hole may be in the shape of a matching pentagon or hexagon, etc., which aims to enable the two to move axially relative to each other in a nested manner and to be incapable of rotating relative to each other.
The spring fixing nut 4 is in threaded connection with the second thread section of the screw rod 1; the flat key section of screw rod 1 is located to the spring 3 cover and sets up between screw rod sleeve 2 and spring fixation nut 4, and the both ends of spring 3 respectively with screw rod sleeve 2 and spring fixation nut 4's terminal surface counterbalance for screw rod 1 can follow axial elasticity relative motion with screw rod sleeve 2.
The axle center department of shell sleeve 5 link up and form a cavity, screw rod sleeve 2 is fixed in the one end of shell sleeve cavity 5, insulating cement end cap 6 is fixed in the other end of shell sleeve 5 cavity. The diameter of the cavity is larger than the diameters of the screw sleeve 2, the spring 3, the spring fixing nut 4 and the insulating glue plug 6, and all the components are contained in the cavity. Specifically, an internal thread is arranged on the inner wall of the cavity of the outer shell sleeve 5, an external thread is arranged on the outer surface of the screw rod sleeve 2, one end, facing the spring 3, of the screw rod sleeve 2 is fixedly connected to the inner wall of the outer shell sleeve 5 through a thread, and the other end of the screw rod sleeve 2 is exposed out of the outer shell sleeve 5; the side of the insulating rubber plug 6 is provided with external threads, and the insulating rubber plug 6 is fixedly connected to the inner wall of the shell sleeve 5 through threads.
In the cavity of the outer shell sleeve 5, the end surface of the second thread section of the screw rod 1 is arranged opposite to the insulating glue plug 6; two conductive contact pins 8 are fixed in the insulating glue plug 6, and two ends of each conductive contact pin 8 are respectively exposed out of two ends of the insulating glue plug 6. The end surface of the second thread section of the screw rod 1 is fixedly connected with a conductive touch plate 7; in this embodiment, a fixing hole is formed in an end surface of one end of the second thread section in the screw 1; the conductive contact plate 7 is provided with a convex fixing column towards one surface of the screw rod 1, and the conductive contact plate 7 is inserted into the fixing hole through the fixing column and then fixed on the end surface of the second thread section.
Further, the conductive contact plate 7 is disposed opposite to the two conductive contact pins 8, so that in a state where the spring 3 is free to extend without being affected by an external force, the conductive contact plate 7 can simultaneously contact with the end portions of the two conductive contact pins 8, so that the two conductive contact pins 8 can be electrically connected. In the 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 surface of the second thread section in the screw rod 1.
As a modification, the conductive contact pin 8 is a telescopic conductive contact pin, and a telescopic end thereof is disposed toward the conductive contact plate 7. The telescopic conductive contact pin 8 can provide a certain free movement space for the conductive contact plate 7 and provide a certain buffer, so that the conductive contact pin 8 is prevented from being damaged in the process of moving the conductive contact plate 7 to the conductive contact pin 8, and meanwhile, the connection tightness of the conductive contact pin 8 and the conductive contact plate 7 is also improved.
The utility model discloses in, the part that screw rod sleeve 2 exposes in shell sleeve 5 is used for installing sensor unit body on teaching model's shell. As an improvement, a plurality of planes for circumferential screwing are further arranged on the outer surface of one end, provided with the insulating glue plug 6, of the outer shell sleeve 5; the sensor is designed into a polygonal shape similar to the outer ring of the nut, and is used for being matched with tools such as a wrench and the like to enable the sensor to be mounted on the teaching model more conveniently and quickly.
The utility model discloses when using, with sensor integral erection to teaching model to the terminal and the signal of telecommunication detection circuit connection that will electrically conduct contact pin 8 and expose, the first screw thread section of screw rod 1 is promptly for needing the student to twist the operating point of twisting the nut operation. When the nut is screwed into the first thread section of the screw rod 1 and the root of the nut in the first thread section is abutted against the screw rod sleeve 2, the screw rod 1 can be pulled out from the screw rod sleeve 2 a little bit along with the continuous screwing of the nut, the spring 3 can be gradually compressed along with the pulling of the screw rod 1, and the conductive contact plate 7 also moves outwards along with the pulling; finally, the conductive contact plate 7 is separated from the conductive contact pin 8, so that the conductive contact pin 8 transmits a disconnection 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 is gradually reset and pushes the spring fixing nut 4 inwards, and then 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 transmit a closed signal to the electric signal detection circuit.
As an improvement, the conductive contact pin 8 in the insulating rubber 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 utility model provides a pair of a pull-out nut sensor for aviation teaching model, it possesses simple structure, convenient to use, detects accurate swift advantage. The components of the utility model are simple and ingenious in assembly, and the overall manufacturing cost of the sensor is greatly reduced; when the nut is fastened and detected, the detection work can be completed only by the aid of the signal detection circuit of the nut and the teaching model, and real-time detection and signal feedback in the teaching practice process are realized without the aid of additional tools or equipment, so that precious teaching time is greatly saved, and teaching efficiency is greatly improved.
Furthermore, the utility model discloses in adopt the contact detection mode of electrically conductive touch panel and telescopic electrically conductive contact pilotage, the feedback of signal is accurate and timely. When the initial relative position of the conductive touch plate and the conductive contact pin needs to be adjusted to change the sensitivity of the sensor, the sensor can be realized only by rotating the insulating rubber plug, and the sensor can be flexibly suitable for different teaching models and different teaching scenes.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (8)
1. A pull-out nut sensor for an aviation teaching model is characterized by comprising 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 integrally formed and connected 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 in a polygonal shape;
a through hole is formed in the axis of the screw sleeve, the screw sleeve is sleeved from the tail end of the second thread section on the screw to the flat key section, and the cross 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 through hole of the screw sleeve in the radial direction and the circumferential direction and can move axially in the through hole of the screw sleeve;
the spring fixing nut is in threaded connection with the second threaded section of the screw; the spring is sleeved on the flat key section of the screw and arranged between the screw sleeve and the spring fixing nut, and two ends of the spring are respectively abutted against the end surfaces of the screw sleeve and the spring fixing nut, so that the screw and the screw sleeve can elastically and relatively move along the axial direction;
the axis of the shell sleeve penetrates through the cavity to form a cavity, the screw sleeve is fixed at one end of the cavity of the shell sleeve, and the insulating glue plug is fixed at the other end of the cavity of the shell sleeve; the diameter of the cavity is larger than the diameters of the screw sleeve, the spring fixing nut and the insulating glue plug;
in the cavity of the shell sleeve, the end surface of the second thread section of the screw 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 respectively exposed out of two ends of the insulating glue plug; the end surface of the second thread section of the screw is fixedly connected with a conductive touch plate; the conductive contact plate is arranged opposite to the two conductive contact pins, so that the conductive contact plate can be simultaneously contacted with the end parts of the two conductive contact pins under the condition that the spring is free to extend without being influenced by external force.
2. The pull-out nut sensor for an aviation teaching model as claimed in claim 1, wherein the inner wall of the cavity of the housing sleeve is provided with internal threads, the outer surface of the screw sleeve is provided with external threads, and one 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 the aviation teaching model as claimed in claim 1, wherein the inner wall of the cavity of the housing sleeve is provided with internal threads, the side surface of the insulating glue plug is provided with external threads, 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 cross section of the flat key section in the screw is rectangular; the cross section of the through hole at the axis of the screw rod sleeve is also rectangular and is matched with the cross section of the flat key section in the screw rod.
5. The pull-out nut sensor for an aviation teaching model as claimed in claim 1, wherein a fixing hole is provided on an end surface of one end of the second thread section in the screw; the one side of electrically conductive touch panel towards the screw rod is equipped with convex fixed column, and electrically conductive touch panel passes through the fixed column and inserts in the fixed orifices, and then is fixed in the terminal surface of second screw thread section.
6. The pull-out nut sensor for an aeronautical teaching model according to claim 1, wherein the conductive contact pin is a telescopic conductive contact pin, the telescopic end of which is 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 in 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 flat surfaces for circumferential screwing are provided on the outer surface of the end of the housing sleeve on which the insulating glue plug is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922383161.4U CN211785847U (en) | 2019-12-26 | 2019-12-26 | Pull-out nut sensor for aviation teaching model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922383161.4U CN211785847U (en) | 2019-12-26 | 2019-12-26 | Pull-out nut sensor for aviation teaching model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211785847U true CN211785847U (en) | 2020-10-27 |
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ID=72980509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922383161.4U Active CN211785847U (en) | 2019-12-26 | 2019-12-26 | Pull-out nut sensor for aviation teaching model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211785847U (en) |
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2019
- 2019-12-26 CN CN201922383161.4U patent/CN211785847U/en active Active
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