CN111017259A - Screw performance measurement device and unmanned aerial vehicle - Google Patents

Screw performance measurement device and unmanned aerial vehicle Download PDF

Info

Publication number
CN111017259A
CN111017259A CN201911366570.1A CN201911366570A CN111017259A CN 111017259 A CN111017259 A CN 111017259A CN 201911366570 A CN201911366570 A CN 201911366570A CN 111017259 A CN111017259 A CN 111017259A
Authority
CN
China
Prior art keywords
rotating shaft
accommodating cavity
propeller
main body
performance measuring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911366570.1A
Other languages
Chinese (zh)
Inventor
卢致辉
陈金颖
钟琪
黄少龙
黄晶
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Kebite Technology Co ltd
Original Assignee
Zhejiang Kebite Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Kebite Technology Co ltd filed Critical Zhejiang Kebite Technology Co ltd
Priority to CN201911366570.1A priority Critical patent/CN111017259A/en
Publication of CN111017259A publication Critical patent/CN111017259A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
    • B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
    • B64F5/60—Testing or inspecting aircraft components or systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U10/00—Type of UAV
    • B64U10/10—Rotorcrafts

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Remote Sensing (AREA)
  • Manufacturing & Machinery (AREA)
  • Transportation (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

The invention relates to the technical field of unmanned aerial vehicle measuring equipment, and provides a propeller performance measuring device and an unmanned aerial vehicle, wherein the propeller performance measuring device comprises: the device comprises a main body, a first accommodating cavity and a second accommodating cavity are formed inside the main body, and one end of the main body is provided with an opening communicated with the first accommodating cavity; the rotating shaft is rotatably arranged in the first accommodating cavity, and one end of the rotating shaft is exposed out of the opening; the fixing structure is fixed at one end of the rotating shaft, which is exposed out of the opening; the torque strain structure is arranged in the second accommodating cavity, and a torque arm is connected between the torque strain structure and the rotating shaft; the tensile force strain structure is arranged on the main body; the unmanned aerial vehicle is provided with the propeller performance measuring device; the propeller performance measuring device and the unmanned aerial vehicle provided by the invention have the following advantages: the device can measure the torque and the tension of the propeller at the same time, and has multiple functions; the torque strain structure, the torque arm and the rotating shaft are contained in the main body, so that the size of the whole propeller performance measuring device is reduced.

Description

Screw performance measurement device and unmanned aerial vehicle
Technical Field
The invention relates to the technical field of performance measuring equipment, in particular to a propeller performance measuring device and an unmanned aerial vehicle.
Background
Along with unmanned aerial vehicle's performance is better and better, its application field is also more and more extensive, has also higher to unmanned aerial vehicle's requirement simultaneously, and in order to promote the efficiency of aircraft, it is very necessary to accurately survey the performance data of each part, and especially the efficiency changes very big propeller system, through accurate foretell its performance data, is very helpful to the research and the promotion of aircraft performance.
However, many existing test systems for measuring propeller performance data are large in size, complex in structure, not wide in applicability, and expensive in price and complex in operation.
Disclosure of Invention
The invention aims to provide a propeller performance measuring device to solve the technical problems of large size and complex structure of a propeller performance measuring device of an unmanned aerial vehicle in the prior art.
In order to achieve the above object, the technical solution adopted by the present invention is a propeller performance measuring device, comprising:
the device comprises a main body, a first accommodating cavity and a second accommodating cavity, wherein the first accommodating cavity and the second accommodating cavity are formed in the main body, the second accommodating cavity is positioned on one side of the first accommodating cavity and communicated with the first accommodating cavity, and one end of the main body is provided with an opening communicated with the first accommodating cavity;
the rotating shaft is rotatably arranged in the first accommodating cavity, and one end of the rotating shaft is exposed out of the opening;
the fixing structure is fixed at one end of the rotating shaft, which is exposed out of the opening, and is used for fixing the propeller structure;
the torque strain structure is arranged in the second accommodating cavity, and a torque arm is connected between the torque strain structure and the rotating shaft; and
and the tensile force strain structure is arranged on the main body.
In one embodiment, the length direction of the torsional strain structure is parallel to the axial direction of the rotating shaft.
In one embodiment, the length direction of the torque moment arm is perpendicular to the length direction of the torque strain structure and the axial direction of the rotating shaft.
In one embodiment, a strain gage is affixed to the torque-strain structure.
In one embodiment, the length direction of the tensile strain structure is perpendicular to the axial direction of the rotating shaft.
In one embodiment, the propeller performance measuring device further comprises a signal transmitter and/or a rotational speed annunciator provided on the main body.
In one embodiment, the propeller performance measuring device further includes a first bearing disposed at an end of the main body away from the fixing structure, and the rotating shaft abuts against the first bearing.
In one embodiment, the first bearing comprises a ball bearing and a support bearing, the ball bearing is stacked on the support bearing, and the rotating shaft abuts against the ball bearing.
In one embodiment, the propeller performance measuring device further includes a second bearing disposed at an end of the main body close to the fixing structure, and the rotating shaft abuts against the second bearing.
Another object of this embodiment is to provide an unmanned aerial vehicle, be equipped with screw performance measuring device as described above.
The propeller performance measuring device provided by the invention has the beneficial effects that:
firstly, the propeller performance measuring device can simultaneously measure the torque and the tension of the propeller by simultaneously arranging a torque strain structure and a tension strain structure, so that the propeller performance measuring device has multiple functions; secondly, the torque strain structure, the torque arm and the rotating shaft are contained in the main body, so that the protection of the torque strain structure is improved, and the volume of the whole propeller performance measuring device is reduced; finally, the propeller structure can be fixed on the propeller performance measuring device by arranging the fixing structure, so that the measurement is convenient.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is an exploded view of a propeller performance measurement device provided by an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a propeller performance measurement device provided by an embodiment of the present invention;
fig. 3 is a perspective cross-sectional view of a propeller performance measurement apparatus provided in an embodiment of the present invention.
The figures are numbered:
a body-1; a signal transmitter-11; a rotation speed annunciator-12;
a rotating shaft-2;
-a fixed structure-3;
torque strain configuration-4; a strain gauge-41;
a tensile strain structure-5; a fixed part-51; a bridge-52; a deformable cavity-53;
propeller structure-6;
torque arm-7;
a first bearing-8; a ball bearing-81; a support bearing-82;
a second bearing-9.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected or indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the invention, and do not indicate that the device or component must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as indicating a number of technical features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The following describes a specific implementation of the present invention in more detail with reference to specific embodiments:
as shown in fig. 1, the embodiment of the present invention provides a propeller performance measuring apparatus, which is used for measuring parameters of a propeller structure, including torque and tension, where the tension specifically refers to a lifting force that can be provided by the propeller structure.
The propeller performance measuring apparatus includes: the device comprises a main body 1, a rotating shaft 2, a fixing structure 3, a torque strain structure 4 and a tension strain structure 5. A first accommodating cavity is formed inside the main body 1, and an opening communicated with the first accommodating cavity is formed at one end of the main body 1; the rotating shaft 2 is rotatably arranged in the first accommodating cavity, and one end of the rotating shaft is exposed out of the opening; the fixed structure 3 is fixed at one end of the rotating shaft 2 exposed out of the opening, and the fixed structure 3 is used for fixing the propeller structure 6; the torque strain structure 4 is arranged in a second accommodating cavity formed in the main body 1, the second accommodating cavity is positioned at one side of the first accommodating cavity and communicated with the first accommodating cavity, and a torque arm 7 is connected between the torque strain structure 4 and the rotating shaft 2; the tensile strain structure 5 is arranged on the main body 1.
The working principle of the propeller performance measuring device provided by the embodiment is as follows:
the propeller structure 6 is arranged on the fixed structure 3, the propeller structure 6 is started to generate lifting force and torsion, the fixed structure 3 is fixed on the rotating shaft 2, the rotating shaft 2 rotates due to the torsion generated by the propeller structure 6, the torque arm 7 fixed on the rotating shaft 2 rotates along with the rotating shaft 2, the torsion is transmitted to the torque strain structure 4, and the torque strain structure 4 obtains torque data by detecting the deformation of the torque strain structure 4; similarly, the lifting force generated by the propeller structure 6 is transmitted to the main body 1 and then transmitted to the tensile strain structure 5, so that the tensile strain structure 5 deforms, and the tensile strain structure 5 deforms by detecting the deformation of the structure itself to obtain tensile force data.
The propeller performance measuring device provided by the embodiment has the beneficial effects that:
firstly, the torque strain structure 4 and the tension strain structure 5 are arranged at the same time, so that the propeller performance measuring device can measure the torque and the tension of the propeller at the same time, and the propeller performance measuring device has multiple functions; secondly, the torque strain structure 4, the torque arm 7 and the rotating shaft 2 are all accommodated in the main body 1, so that the protection of the torque strain structure 4 is improved, and the volume of the whole propeller performance measuring device is reduced; finally, the propeller structure 6 can be fixed on the propeller performance measuring device by arranging the fixing structure 3, so that the measurement is convenient.
In one embodiment, the length direction of the torsional strain structure 4 is parallel to the axial direction of the rotating shaft 2. Specifically, the torsional strain structure 4 is in the form of an elongated plate, and the longitudinal direction thereof is parallel to the axial direction of the rotating shaft 2, that is, parallel to the longitudinal direction of the main body 1, and the torsional strain structure 4 is accommodated inside the main body 1. The radial size of the main body 1 can be reduced through the design, and the phenomenon that the size of the propeller performance measuring device is overlarge due to overlarge radial size of the main body 1 is avoided.
In one embodiment, the length direction of the torque arm 7 is perpendicular to the length direction of the torque strain structure 4 and the axial direction of the rotating shaft 2. It can be understood that the torque force arm 7 is vertically arranged, so that the torque force of the propeller structure 6 can shorten the transmission path of the torque force, avoid the loss of the torque force in the transmission process, and further enable the measurement structure to be more accurate.
In one embodiment, strain gauges 41 are affixed to the torsional strain structure 4. It will be appreciated that the deformation of the torque strain structure 4 may be sensed by providing strain gauges 41 to obtain torque data.
Specifically, the strain gauge 41 is a full-bridge strain gauge 41, and the number of the strain gauges 41 is four.
In one embodiment, the length direction of the tensile strain structure 5 is perpendicular to the axial direction of the rotating shaft 2. It will be appreciated that the propeller arrangement 6 is maintained coaxial with the shaft 2 when the propeller arrangement 6 is fixed to the fixed structure 3. By setting the tensile strain structure 5 to be perpendicular to the axial direction of the rotating shaft 2, the lifting force generated by the propeller structure 6 can more easily deform the tensile strain structure 5, thereby making the output of the measurement result more accurate.
Specifically, the tensile strain structure 5 includes two fixing portions 51 arranged oppositely and two bridging portions 52 connected between the fixing portions 51, the two bridging portions 52 are arranged at intervals, and a strain chamber 53 is formed between the two bridging portions 52; one fixing part 51 is fixed on the main body 1, and the other fixing part 51 is fixed on the unmanned aerial vehicle or a fixing part 51; when the propeller structure 6 generates the lifting force, the bridge part 52 is deformed, and the data of the lifting force can be obtained by measuring the deformation degree of the bridge part 52; it can be understood that, by providing two spaced-apart bridges 52 and forming a deformation cavity 53 therebetween, the deformation of the bridges 52 can be more stable, the output deformation data can be more stable, and the measurement result can be more accurate.
In one embodiment, the propeller performance measuring apparatus further includes a signal transmitter 11 and a rotational speed annunciator 12 provided on the main body 1. In another embodiment, the propeller performance measuring apparatus further includes a signal transmitter 11 or a rotational speed annunciator 12 provided on the main body 1. The rotating speed annunciator 12 is used for measuring the rotating speed of the propeller structure 6, and a parameter testing part of the whole measuring system is formed by measuring the rotating speed, the torque and the tension of the propeller structure 6; the three measurement data are transmitted to a signal transmitter 11 to be converted into digital signals, and the digital signals are transmitted to an upper computer through a signal wire to obtain visual display and data parameters for a user to analyze.
Specifically, the rotation speed annunciator 12 includes a photoelectric sensor, and measures the time of one rotation of the propeller, and obtains the rotation speed of the propeller through calculation.
In one embodiment, the propeller performance measuring device further includes a first bearing 8 disposed at an end of the main body 1 away from the fixing structure 3, and the rotating shaft 2 abuts against the first bearing 8. It can be understood that the friction force of the rotation of the rotating shaft 2 can be made smaller by providing the first bearing 8, and the error of the torsion of the rotating shaft 2 can be avoided.
Specifically, a fixing opening is opened at one end of the main body 1 far away from the fixing structure 3, and the first bearing 8 is embedded in the fixing opening. The replacement of the first bearing 8 can be made more convenient by this fixed port design.
In one embodiment, the first bearing 8 includes a ball bearing 81 and a support bearing 82, the ball bearing 81 is stacked on the support bearing 82, and the rotating shaft 2 abuts against the ball bearing 81.
Specifically, by separating the axial and tangential forces through the ball bearing 81 and the support bearing 82, when the propeller structure 6 generates an axial acting force, the whole axial acting force acts on the main body 1, and the main body 1 is fixed to the tensile strain structure 5, so that the axial tension applied to the whole system can be measured through the tensile strain structure 5.
It will be appreciated that the simple distinction between axial tension and tangential torque by the resultant force decoupling function of the support bearing 82 allows measurement by this simple means without the need for analysis by complicated structures and calculations, with the effect of reducing the internal structure of the propeller performance measurement apparatus.
In one embodiment, the propeller performance measuring device further comprises a second bearing 9 disposed at one end of the main body 1 close to the fixed structure 3, and the rotating shaft 2 abuts against the second bearing 9. It can be understood that the friction force of the rotation of the rotating shaft 2 can be made smaller by providing the second bearing 9, and the error of the torsion of the rotating shaft 2 can be avoided.
Another object of the present invention is to provide an unmanned aerial vehicle, which is provided with the propeller performance measuring device as described above.
Through setting up foretell screw performance measuring device, this unmanned aerial vehicle can fly the in-process and measure rotational speed, moment of torsion and the tensile data of propeller structure 6 in real time.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A propeller performance measurement device, comprising:
the device comprises a main body, a first accommodating cavity and a second accommodating cavity, wherein the first accommodating cavity and the second accommodating cavity are formed in the main body, the second accommodating cavity is positioned on one side of the first accommodating cavity and communicated with the first accommodating cavity, and one end of the main body is provided with an opening communicated with the first accommodating cavity;
the rotating shaft is rotatably arranged in the first accommodating cavity, and one end of the rotating shaft is exposed out of the opening;
the fixing structure is fixed at one end of the rotating shaft, which is exposed out of the opening, and is used for fixing the propeller structure;
the torque strain structure is arranged in the second accommodating cavity, and a torque arm is connected between the torque strain structure and the rotating shaft; and
and the tensile force strain structure is arranged on the main body.
2. The propeller performance measuring apparatus of claim 1, wherein a length direction of the torque strain structure is parallel to an axial direction of the rotating shaft.
3. The propeller performance measurement device of claim 2, wherein a length direction of the torque arm is perpendicular to a length direction of the torque strain structure and an axial direction of the rotating shaft.
4. A propeller performance measuring apparatus according to claim 3 wherein the torque strain structure has a strain gage attached thereto.
5. The propeller performance measuring apparatus of claim 1, wherein a length direction of the tensile strain structure is perpendicular to an axial direction of the rotating shaft.
6. A propeller performance measuring apparatus according to any one of claims 1 to 5, further comprising a signal transducer and/or a rotational speed annunciator provided on the main body.
7. A propeller performance measuring device according to any one of claims 1 to 5 wherein the propeller performance measuring device further comprises a first bearing provided at an end of the main body remote from the fixed structure, the shaft bearing against the first bearing.
8. The propeller performance measuring device of claim 7, wherein the first bearing comprises a ball bearing and a support bearing, the ball bearing is stacked on the support bearing, and the rotating shaft abuts against the ball bearing.
9. The propeller performance measuring device of claim 7, further comprising a second bearing disposed at an end of the main body adjacent to the fixed structure, wherein the shaft abuts against the second bearing.
10. An unmanned aerial vehicle, characterized in that a propeller performance measuring device according to any one of claims 1-9 is provided.
CN201911366570.1A 2019-12-26 2019-12-26 Screw performance measurement device and unmanned aerial vehicle Pending CN111017259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911366570.1A CN111017259A (en) 2019-12-26 2019-12-26 Screw performance measurement device and unmanned aerial vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911366570.1A CN111017259A (en) 2019-12-26 2019-12-26 Screw performance measurement device and unmanned aerial vehicle

Publications (1)

Publication Number Publication Date
CN111017259A true CN111017259A (en) 2020-04-17

Family

ID=70214651

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911366570.1A Pending CN111017259A (en) 2019-12-26 2019-12-26 Screw performance measurement device and unmanned aerial vehicle

Country Status (1)

Country Link
CN (1) CN111017259A (en)

Similar Documents

Publication Publication Date Title
CN108760109B (en) Variable-range soil pressure measuring device and method based on Bragg fiber grating
CN103048071B (en) Device and method for monitoring dynamic torque of frameless torque motor in suspension state
CN201653607U (en) Axial force measuring sensor
CN103837275A (en) Dynamic bending moment test system for ship shafting
KR20110108484A (en) Measurement method and system for the torsion of the structure using strain sensors
CN110006563A (en) Helicopter blade is waved and shimmy Bending moment distribution formula optical fiber decoupling measurement method
CN211893693U (en) Screw performance measurement device and unmanned aerial vehicle
WO2015027937A1 (en) Force transducer, and large-load measuring method capable of multi-angle calibration for airplane
CN106338272B (en) Test method for component incline measurement
CN202330457U (en) Temperature compensation type optical fiber grating accelerator probe
CN106525301B (en) Force and displacement measuring method and sensor based on distributed optical fiber sensing
CN109141703A (en) The device and method of engine torque measurement under a kind of loading condition
CN102878937A (en) Integrated displacement and angle sensor with fiber Bragg gratings
CN111017259A (en) Screw performance measurement device and unmanned aerial vehicle
CN108981991A (en) Optical fiber type photoelectric sensor ship shaft power measuring instrument and measurement method
CN106768535B (en) Double-range detection torque sensor with overload protection and manufacturing method thereof
CN108225622A (en) A kind of three-dimensional force sensor
CN203534742U (en) Integrated pumping well polished rod axial force and torque sensor
CN216309630U (en) Force and moment composite sensor
CN202869443U (en) Integrated displacement and rotation angle sensor with fiber Bragg gratings
CN106092391A (en) A kind of split type 2 D force sensor
CN211042550U (en) Torque measuring device
CN206161187U (en) Electromagnetic acoustic sensor and detecting system with temperature monitoring function
EP3330681B1 (en) Determining fluid density within a tank
CN212052913U (en) Low-strain foundation pile integrity detection device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination