Propeller assembly facilitating rapid angle adjustment

Abstract

The utility model discloses a propeller assembly convenient for quickly adjusting an angle. The propeller assembly comprises an upper propeller hub and a lower propeller hub arranged below the upper propeller hub, a first limiting groove; the second limiting groove is fixed to the outer surface of the lower propeller hub and corresponds to the first limiting groove in the outer surface of the upper propeller hub, and the first limiting groove is matched with the second limiting groove through a fastening assembly; the mounting block is arranged between the first limiting groove and the second limiting groove, and one end of the mounting block is provided with a paddle; according to the device, the first digital identification, the second digital identification and the angle identification are arranged, so that the situation that in the prior art, installation personnel need to depend on a high-precision angle instrument for detection and installation, time and labor are wasted, and efficiency is low is avoided, all the blades can accurately correspond to different first limiting grooves in the edge of the upper propeller hub, and the installation efficiency is improved. And then the mounting angle is accurately adjusted, a professional angle instrument is not needed for detection, and operation is easy and convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a propeller assembly convenient for fast angle adjustment. BACKGROUND

[0002] In the ground maintenance process of the aircraft, the angle positioning and adjustment of the propeller blade is a very important link. The traditional method often relies on high-precision angle instruments for detection, and then high-level operators adjust according to the detected angle, which is time-consuming and inefficient, and there is a risk of manual detection error, which is difficult to guarantee the accuracy of positioning. Therefore, we propose a propeller assembly convenient for fast angle adjustment. UTILITY MODEL CONTENT

[0003] The utility model aims at providing a propeller assembly convenient for fast angle adjustment to solve the problems of the existing propeller blade angle positioning and adjustment in the background art, which needs manual detection of the adjusted inclination angle and manual operation adjustment, which is time-consuming and inefficient.

[0004] To achieve the above object, the utility model provides the following technical scheme: a propeller assembly convenient for fast angle adjustment, comprising:

[0005] An upper hub and a lower hub arranged below the upper hub;

[0006] A first limiting groove;

[0007] A second limiting groove fixed to the outer surface of the lower hub and corresponding to the first limiting groove of the outer surface of the upper hub, and the first limiting groove and the second limiting groove are matched by a fastening assembly;

[0008] A mounting block arranged between the first limiting groove and the second limiting groove, and one end of the mounting block has a propeller blade;

[0009] Among them, the mounting block is engraved with an angle mark indicating its rotation range, the propeller blade has a first digital mark, and the first limiting groove is provided with a second digital mark matched with the first digital mark.

[0010] Preferably, the center of the angle mark corresponds to the first digital mark, and the front surface of the first limiting groove is provided with an indicating line corresponding to the center of the angle mark.

[0011] Preferably, the shape and size of the first digital mark and the second digital mark are consistent.

[0012] Preferably, the cross section of the mounting block is "T" shape, and one end of the smallest outer diameter of the mounting block corresponds to the propeller blade.

[0013] Preferably, the first limiting grooves are uniformly distributed along the upper hub, and the lower hub is equal in number to the first limiting grooves.

[0014] Preferably, the fastening assembly comprises a fastening screw and a fastening nut, the fastening screw is arranged inside the first limiting groove and extends out of one end of the second limiting groove, the fastening nut is arranged on the lower surface of the second limiting groove, and the fastening nut and the fastening screw are matched through thread parts.

[0015] Preferably, the fastening screw is symmetrically arranged at two positions along the mounting block.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The first digital identifier, the second digital identifier and the angle identifier are arranged, so that the traditional installation personnel can avoid relying on high-precision angle instruments for detection and installation, which is time-consuming and inefficient. The device can accurately correspond each paddle to different first limiting grooves at the edge of the upper hub, and then accurately adjust the installation angle without the need of professional angle instruments for detection. The operation is simple and convenient, and the first limiting groove and the second limiting groove can quickly fix the paddle after being tightly held. The device is easy to disassemble and maintain in the later period, and the practicability of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 The drawings show the structure of the utility model;

[0019] Fig. 2 The drawings show the structure of the utility model;

[0020] In the drawings: 1, upper hub; 2, first limiting groove; 3, mounting block; 4, paddle; 5, lower hub; 6, second limiting groove; 7, fastening nut; 8, fastening screw; 9, first digital identifier; 10, angle identifier; 11, second digital identifier. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figs. 1-2 The utility model provides a technical scheme: a propeller assembly convenient for quickly adjusting angle, which comprises:

[0023] The upper hub 1 and the lower hub 5 arranged below the upper hub 1;

[0024] The first limiting groove 2;

[0025] The second limiting groove 6 is fixed to the outer surface of the lower hub 5 and corresponds to the first limiting groove 2 of the outer surface of the upper hub 1. The first limiting groove 2 and the second limiting groove 6 are matched by the fastening assembly to facilitate quick locking and fixing of the mounting block 3 to complete the installation of the blade 4.

[0026] The mounting block 3 is arranged between the first limiting groove 2 and the second limiting groove 6, and one end of the mounting block 3 has the blade 4.

[0027] The mounting block 3 is arranged between the first limiting groove 2 and the second limiting groove 6, and one end of the mounting block 3 has the blade 4.

[0028] In this embodiment, preferably, the center of the angle mark 10 corresponds to the first digital mark 9, and the front surface of the first limiting groove 2 corresponds to the center of the angle mark 10 and is provided with an indicating line to better align the center of the blade 4 with the center of the first limiting groove 2.

[0029] In this embodiment, preferably, the shape and size of the first digital mark 9 and the second digital mark 11 are consistent to facilitate the placement of different blades 4 in the corresponding first limiting groove 2 when installing multiple blades 4.

[0030] In this embodiment, preferably, the cross section of the mounting block 3 is "T" shaped, and one end of the smallest outer diameter of the mounting block 3 corresponds to the blade 4 to facilitate the clamping and fixing of the mounting block 3 by the first limiting groove 2 and the second limiting groove 6.

[0031] In this embodiment, preferably, the first limiting groove 2 is uniformly distributed along the upper hub 1, and the number of the second limiting groove 6 is equal to that of the first limiting groove 2 to facilitate the installation of multiple blades 4.

[0032] In this embodiment, preferably, the fastening assembly includes a fastening screw 8 and a fastening nut 7. The fastening screw 8 is arranged inside the first limiting groove 2 and extends out of one end of the second limiting groove 6. The fastening nut 7 is arranged on the lower surface of the second limiting groove 6, and the fastening nut 7 and the fastening screw 8 are matched by the threaded part to facilitate quick installation and fixing of the blade 4.

[0033] In this embodiment, preferably, the fastening screw 8 is symmetrically arranged at two places along the mounting block 3 to better compress and fix the mounting block 3.

[0034] The working principle and use flow of the utility model: in processing, through laser machine engraving first digital sign 9 and second digital sign 11, and bonding angle sign 10 on mounting block 3, when installing multiple paddles 4 to upper paddle hub 1 in later period, first check first digital sign 9 on paddle 4, and observe second digital sign 11 and its correspondence, after correspondence, place mounting block 3 between first limiting slot 2 and second limiting slot 6, then rotate mounting block 3, check angle sign 10 to judge the inclination angle of paddle 4, namely can realize the positioning of installation angle.No need high-precision protractor and special tooling, simple operation, reliable accuracy, guarantee the accuracy and reliability of paddle 4 angle when repeating dismounting and interchanging in later period.

[0035] Although the embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A propeller assembly for facilitating quick angle adjustment, characterized by, The utility model relates to a kind of propeller hub, including: Upper hub (1) and lower hub (5) arranged below it; First limiting slot (2); Second limiting slot (6) is fixed to the outer surface of lower hub (5), and corresponds with the first limiting slot (2) of the outer surface of the upper hub (1), and the first limiting slot (2) and second limiting slot (6) are matched by fastening assembly; Mounting block (3) is arranged between first limiting slot (2) and second limiting slot (6), and the mounting block (3) has paddle (4) in one end; Wherein, angle mark (10) indicating its rotation range is engraved on the mounting block (3), the paddle (4) has first digital mark (9), and the first limiting slot (2) is provided with second digital mark (11) matched with first digital mark (9); The center of the angle mark (10) corresponds with first digital mark (9), and the front surface of the first limiting slot (2) is provided with indicating line corresponding with the center of angle mark (10); The shape and size of the first digital mark (9) and second digital mark (11) are consistent; The cross section of the mounting block (3) is "T" shape, and the smallest outer diameter of the mounting block (3) corresponds with paddle (4) in one end; The fastening assembly includes fastening screw (8) and fastening nut (7), the fastening screw (8) is arranged in the inner side of first limiting slot (2) and extends out one end of second limiting slot (6), the fastening nut (7) is arranged on the lower surface of second limiting slot (6), and the fastening nut (7) and fastening screw (8) are matched by thread part.

2. A propeller assembly for facilitating quick angle adjustment according to claim 1, wherein: The first limiting slot (2) is uniformly distributed along the upper hub (1), and the number of the lower hub (5) and the first limiting slot (2) is equal.

3. The propeller assembly of claim 1, wherein: The fastening screw (8) is symmetrically arranged in two places along the mounting block (3).

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