A drone propeller measuring device

Abstract

The present application relates to the technical field of propeller measurement, in particular to a kind of unmanned aerial vehicle propeller measuring device, including rotating platform, for installing the propeller to be measured, and drive the propeller to be measured rotation, measuring tool, install on the blade of the propeller to be measured, for providing measurement datum plane, inclination sensor, install on the measuring tool, for when the propeller to be measured rotation, the state data of the measuring tool are collected, control module, with the inclination sensor and the rotating platform are connected, for obtaining the state data of the measuring tool, and the motion state of the propeller is controlled.The technical scheme of the present application can realize the automatic measurement of pitch angle, solve the problem of time-consuming and labor-intensive of existing measurement method, improve the measurement efficiency, reduce the labor cost, eliminate the interference of human factors at the same time, improve the measurement precision, ensure the accuracy of measurement result.

Description

TECHNICAL FIELD

[0001] The present application relates to the propeller measurement technical field, especially to a kind of unmanned aerial vehicle propeller measuring device. BACKGROUND

[0002] Unmanned aerial vehicle is the unmanned aircraft using radio remote control equipment and self-provided program control device to manipulate, or free vehicle computer completely intermittently autonomously operates, compared with manned aircraft, it has the advantages of small size, low cost, convenient to use, low requirement to combat environment, strong battlefield survivability etc., has been widely applied in aerial photography, agriculture, disaster relief, news report etc., greatly expands the purpose of unmanned aerial vehicle itself.

[0003] Propeller is an important component and core device of unmanned aerial vehicle power system, through the rotation of blade in air, the rotating power of engine is converted into propulsive force, so as to realize the functions such as take-off, cruising and landing in flight profile of unmanned aerial vehicle.

[0004] Propeller is usually composed of multiple blades, there is a gradual torsion angle from blade root to blade tip, the torsion angle of blade refers to the included angle between chord line of blade body and rotation plane, also called pitch angle, which is a key parameter affecting blade aerodynamic layout and flight quality, during blade installation, staff needs to measure the pitch angle of blade constantly, so as to adjust the maximum pitch angle and minimum pitch angle to the value required by customer, in the prior art, profile card method is usually used to measure the pitch angle of blade, first, staff installs profile card tooling at specified position of blade, then carries out reference correction to digital display level meter, finally places digital display level meter on profile card tooling to measure pitch angle, this measurement method is time-consuming and laborious, measurement efficiency is low, a lot of manpower and time are wasted, and measurement is easily disturbed by human factors, thereby affecting the accuracy of measurement result. SUMMARY

[0005] The present application aims to provide a kind of unmanned aerial vehicle propeller measuring device, the measuring device simple operation, strong practicality, can realize the automatic measurement of pitch angle, solve the problem of time-consuming and laborious of existing measurement method, improve the measurement efficiency, reduce the labor cost, eliminate the interference of human factors at the same time, improve the measurement precision, ensure the accuracy of measurement result.

[0006] The present application provides a kind of unmanned aerial vehicle propeller measuring device, including rotating platform, for installing the propeller to be measured, and driving the propeller to be measured to rotate;

[0007] Measuring tooling is installed on the blade of the propeller to be measured, for providing measurement reference surface;

[0008] An inclination sensor is installed on the measuring tool to collect state data of the measuring tool when the propeller to be measured rotates.

[0009] A control module is connected with the inclination sensor and the rotating platform to acquire state data of the measuring tool and control the motion state of the propeller.

[0010] Further, the rotating platform comprises a fixing seat, an accommodating cavity is arranged in the fixing seat, and a mounting groove in communication with the accommodating cavity is arranged on the top of the fixing seat.

[0011] A rotating seat is rotatably connected in the mounting groove, and a driving assembly for driving the rotating seat to rotate is arranged in the accommodating cavity.

[0012] Further, the driving assembly comprises a transmission shaft vertically arranged in the accommodating cavity, one end of the transmission shaft is connected with the bottom of the rotating seat, and the other end of the transmission shaft is rotatably connected with the bottom of the accommodating cavity.

[0013] Fixed blocks are arranged on the two sides of the transmission shaft, a horizontal worm is arranged between the two fixed blocks, the two ends of the worm are rotatably connected with the fixed blocks, one end of the worm is connected with a driving motor, and a bevel gear matched with the worm is arranged on the outer side of the transmission shaft.

[0014] Further, the propeller to be measured is connected with the top of the rotating seat through a connecting flange.

[0015] Further, the support platform comprises a plurality of arrayed mounting holes arranged on the top of the support platform, a plurality of connecting rods matched with the mounting holes are arranged on the bottom of the fixing seat, and the connecting rods are threadedly connected with the mounting holes.

[0016] Further, the measuring tool comprises an upper group and a lower group which are symmetrical to each other, and the upper group and the lower group are respectively arranged on the top and the bottom of the blade of the propeller to be measured.

[0017] Further, the upper group and the lower group are connected with the blade of the propeller to be measured through magnets.

[0018] Further, the support platform comprises a support frame arranged on the top of the support platform to mount and support the laser displacement sensor.

[0019] A laser displacement sensor is arranged on one side of the propeller to be measured to measure the outer dimension of the propeller to be measured and transmit the measurement result to the control module.

[0020] Further, the support platform comprises a support frame arranged on the top of the support platform to mount and support the laser displacement sensor.

[0021] Further, the control module comprises a PLC controller connected with the driving motor, used for controlling the motion state of the propeller to be measured.

[0022] The industrial computer is connected with the inclination sensor and the laser displacement sensor, used for collecting and analyzing the state data collected by the inclination sensor and the laser displacement sensor, and displaying the analysis results in real time.

[0023] The beneficial effects of the present application are as follows:

[0024] The technical scheme of the present application installs the propeller to be measured on the rotating platform, drives its rotation through the control module, makes the inclination sensor obtain the change value of the measuring tool in the motion state, and transmits it to the control module for analysis, so as to obtain the pitch angle of the propeller to be measured, realizes the automatic measurement of the pitch angle, solves the problem of time-consuming and laborious of the existing measurement method, improves the measurement efficiency, reduces the labor cost, eliminates the interference of human factors, improves the measurement accuracy, and ensures the accuracy of the measurement results. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0026] Figure 1 It is a structural schematic view of the unmanned aerial vehicle propeller measuring device in embodiment 1 of the present application.

[0027] Figure 2 It is a structural schematic view of the rotating platform in embodiment 1 of the present application.

[0028] Figure 3 It is a sectional view of the rotating platform in embodiment 1 of the present application.

[0029] Figure 4 It is a structural schematic view of the measuring tool in embodiment 1 of the present application.

[0030] Figure 5 It is a structural schematic view of the measuring tool and the propeller to be measured in embodiment 1 of the present application.

[0031] Explanation of reference signs:

[0032] 1-support platform, 2-mounting hole, 3-rotary platform, 4-connection flange, 5-propeller to be measured, 6-measuring tool, 7-inclination sensor, 8-support frame, 9-laser displacement sensor, 10-PLC controller, 11-industrial computer, 12-fixing seat, 13-rotary seat, 14-mounting groove, 15-containing cavity, 16-transmission shaft, 17-conical gear, 18-fixing block, 19-worm, 20-driving motor, 21-upper group, 22-lower group. DETAILED DESCRIPTION

[0033] The technical solutions of the present application will be described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited. In addition, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] Example 1

[0037] By Figures 1 to 5As shown, a kind of unmanned aerial vehicle propeller measuring device, including support platform 1, the top of support platform 1 is equipped with several array distribution installation hole 2, installation hole 2 is M6 threaded hole, the top of support platform 1 is equipped with rotating platform 3, rotating platform 3 includes fixed seat 12, the bottom of fixed seat 12 is equipped with several with installation hole 2 compatible connecting rod (not shown in drawing), connecting rod is connected with installation hole 2 by screw thread, the inside of fixed seat 12 is equipped with containing cavity 15, the top of fixed seat 12 is equipped with with containing cavity 15 the installation slot 14 of intercommunication, the inside of installation slot 14 is equipped with the rotating seat 13 for installing the propeller 5 to be measured, the propeller 5 to be measured is connected with rotating seat 13 by connecting flange 4, rotating seat 13 is rotatably connected with installation slot 14, the inside of containing cavity 15 is equipped with the drive assembly for rotating the rotating seat 13, the blade of the propeller 5 to be measured is equipped with measuring tool 6, measuring tool 6 is divided into upper group 21 and lower group 22 which are symmetrical, upper group 21 and lower group 22 are respectively installed on the top and bottom of the blade of the propeller 5 to be measured by magnet (not shown in drawing), measuring tool 6 is equipped with inclination sensor 7, and inclination sensor 7 and drive assembly are connected with control module.

[0038] The propeller 5 to be measured is fixed on the top of rotating seat 13 by connecting flange 4, and is rotated by drive assembly controlled by control module, so that inclination sensor 7 obtains the change value of measuring tool 6 in the movement state, and is transmitted to control module for analysis, so as to obtain the pitch angle of the propeller 5 to be measured, realize the automatic measurement of the pitch angle, solve the problem of time-consuming and laborious of the existing measurement method, improve the measurement efficiency, reduce the labor cost, eliminate the interference of human factors, improve the measurement accuracy, ensure the accuracy of measurement results, in addition, the rotating direction and rotating speed of the propeller 5 to be measured can be controlled by control module, so as to efficiently and conveniently complete the adjustment work of the pitch angle, in addition, the upper group 21 and lower group 22 of measuring tool 6 are connected with the blade of the propeller 5 to be measured by magnet, which is convenient to disassemble and assemble, and improves the measurement efficiency of the pitch angle.

[0039] Drive assembly includes transmission shaft 16 vertically arranged in containing cavity 15, one end of transmission shaft 16 is connected with the bottom of rotating seat 13, the other end of transmission shaft 16 is rotatably connected with the bottom of containing cavity 15, two sides of transmission shaft 16 are respectively provided with fixed block 18, horizontal worm 19 is arranged between the two fixed blocks 18, two ends of worm 19 are rotatably connected with fixed block 18, one end of worm 19 is connected with drive motor 20, drive motor 20 is connected with control module, the outside of transmission shaft 16 is sleeved with tapered gear 17 matched with worm 19.

[0040] The driving motor 20 drives the worm 19 to rotate, the worm 19 drives the bevel gear 17 to rotate through the meshing effect, the bevel gear 17 drives the transmission shaft 16 to rotate, thereby driving the rotating seat 13 to rotate, and the rotating seat 13 drives the propeller 5 to rotate, so as to measure the pitch angle of the propeller 5, and the driving motor 20 can be controlled by the control module, so as to adjust the rotating direction and rotating speed of the propeller 5.

[0041] The laser displacement sensor 9 is arranged on one side of the propeller 5, and the support platform 1 is provided with a support frame 8 arranged on the top for mounting and supporting the laser displacement sensor 9.

[0042] The laser displacement sensor 9 measures the size of the propeller 5 and transmits the size to the control module, and the control module displays the size in real time.

[0043] The control module comprises a PLC controller 10 connected with the driving motor 20, which is used for controlling the motion direction and motion speed of the propeller 5.

[0044] The industrial computer 11 is connected with the inclination sensor 7 and the laser displacement sensor 9, which is used for collecting and analyzing the data collected by the inclination sensor 7 and the laser displacement sensor 9 and displaying the analysis results in real time.

[0045] The industrial computer 11 analyzes the state data collected by the inclination sensor 7 and the laser displacement sensor 9, so as to obtain the pitch angle, diameter and height of the propeller 5, automatically records and stores the information, and displays the information in real time, thereby ensuring the assembly quality of the propeller 5.

[0046] Working principle: the propeller 5 is fixed on the top of the rotating seat 13 through the connecting flange 4, the driving motor 20 is started through the PLC controller 10, the driving motor 20 drives the worm 19 to rotate, the worm 19 drives the bevel gear 17 to rotate through the meshing effect, the bevel gear 17 drives the transmission shaft 16 to rotate, thereby driving the rotating seat 13 to rotate, and the rotating seat 13 drives the propeller 5 to rotate, the inclination sensor 7 obtains the state data of the measuring tool 6 during the rotation of the propeller 5, the laser displacement sensor 9 obtains the size of the propeller 5, the industrial computer 11 analyzes the state data collected by the inclination sensor 7 and the laser displacement sensor 9, so as to obtain the pitch angle, diameter and height of the propeller 5, automatically records and stores the information, and displays the information in real time, thereby the staff can adjust the propeller 5 at any time, the propeller 5 meets the assembly process requirements, and the assembly quality of the propeller 5 is ensured.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A UAV propeller measuring device, characterized in that, It includes a rotating platform for mounting the propeller under test and driving the propeller under test to rotate; A measuring fixture is installed on the blade of the propeller to be measured to provide a measurement reference surface; An inclination sensor, mounted on the measuring fixture, is used to collect the state data of the measuring fixture when the propeller under test rotates; A control module, connected to the tilt sensor and the rotating platform, is used to acquire the status data of the measuring fixture and control the motion state of the propeller. The measuring fixture is divided into an upper group and a lower group that are symmetrically arranged. The upper group and the lower group are located at the top and bottom of the blade of the propeller to be tested, respectively. The rotating platform includes a fixed base, the fixed base has an internal cavity, and the top of the fixed base has a mounting groove communicating with the cavity; The mounting slot is rotatably connected to a rotating seat, and the receiving cavity is provided with a drive assembly for rotating the rotating seat. The drive assembly includes a drive shaft vertically disposed within the receiving cavity, one end of which is connected to the bottom of the rotating seat, and the other end of which is rotatably connected to the bottom of the receiving cavity. The transmission shaft is provided with fixed blocks on both sides, and a horizontally arranged worm gear is provided between the two fixed blocks. The two ends of the worm gear are rotatably connected to the fixed blocks, and a drive motor is connected to one end of the worm gear. A bevel gear adapted to the worm gear is sleeved on the outside of the transmission shaft. Also includes: A laser displacement sensor is installed on one side of the propeller under test to measure the external dimensions of the propeller and transmit the data to the control module. The control module includes a PLC controller connected to the drive motor, used to control the motion state of the propeller under test; An industrial control computer is connected to the tilt sensor and the laser displacement sensor to collect and analyze the data acquired by the tilt sensor and the laser displacement sensor, and to display the analysis results in real time. The propeller under test is connected to the top of the rotating base via a connecting flange.

2. The UAV propeller measuring device according to claim 1, characterized in that, It also includes a support platform, the top of which is provided with a number of arrayed mounting holes, and the bottom of the fixing base is provided with a number of connecting rods that are adapted to the mounting holes, and the connecting rods are threadedly connected to the mounting holes.

3. The UAV propeller measuring device according to claim 1, characterized in that, Both the upper group and the lower group are connected to the blades of the propeller under test via magnets.

4. The UAV propeller measuring device according to claim 2, characterized in that, The top of the support platform is equipped with a support frame for installing and supporting the laser displacement sensor.

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