Propeller pitch adjusting structure
By designing a sliding groove and limiting groove structure at the root of the propeller blade, combined with a spring limiting stop and angle marking, the propeller blade angle can be quickly, easily, and accurately adjusted, solving the problems of complex pitch adjustment and low accuracy in existing technologies, and improving safety and efficiency.
Patent Information
- Application Number
- CN202520116324.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-17
AI Technical Summary
Existing propeller pitch control methods are complex and cumbersome, requiring tools and specialized skills. They are difficult to make the angle of each blade consistent, resulting in complex pitch control, low accuracy, and the potential for large vibrations, noise, reduced thrust, or even dangerous accidents.
The design incorporates a spring-loaded stop and a limiting groove within the root groove of the propeller blade. Combined with angle markings, the blade angle can be quickly and precisely adjusted via a slider and a pitch locking screw.
Consistent adjustment of propeller blade angle can be achieved without the need for tools or professional skills, simplifying operation, improving pitch adjustment efficiency and accuracy, avoiding vibration and noise, and ensuring normal use.
Smart Images
Figure CN223878196U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to propeller pitch adjusting field, especially a propeller pitch adjusting structure. BACKGROUND
[0002] The propeller of the aerial vehicle such as power parachute, light aircraft, unmanned aerial vehicle, multi-rotor aircraft needs to meet the use under different flight conditions, so the ground pitch adjusting propeller that can adjust the pitch on the ground is adopted.
[0003] And the current method is:
[0004] I. With the help of related tools, such as pitch gauge, angle ruler and protractor, adjust the angle of each blade to a uniform angle.
[0005] II. Adjust using the scale line, the blade is marked with a scale line on the hub, and the scale line is also marked on the blade, and the two scale lines are matched to achieve consistent angle of each blade.
[0006] The above-mentioned blade adjustment method is complex and tedious, the former needs to use tools, and the latter needs to have high professional skills and strong hands-on ability, and the use of tools also needs to be very skilled. Non-professionals are difficult to adjust, and the latter is difficult to adjust due to the small scale line spacing caused by the small diameter of the hub and the observation angle problem, so it is difficult to adjust accurately by visual observation. In the adjustment process, it is difficult to adjust, the pitch is complex, the accuracy is low, and any slight negligence will lead to inconsistent angle of each blade, so that the propeller cannot play its due propeller effect, the vibration is large, the noise is large, the thrust is reduced, and the serious one cannot be used normally even the dangerous accident appears.
[0007] Therefore, we propose a propeller pitch adjusting structure. CONTENT OF THE UTILITY MODEL
[0008] In order to overcome the defects of the prior art, the utility model aims at providing a propeller pitch adjusting structure, which can easily and quickly adjust the propeller pitch without the help of other tools and professional skills, so that the angle of each blade is consistent.
[0009] The above technical purpose of the utility model is realized by the following technical scheme:
[0010] The utility model provides a propeller pitch structure, including a plurality of propeller blades and hub, the root of a plurality of propeller blades is provided with the sliding slot, the inside of sliding slot is provided with the limit recess, the inside of sliding slot is movably provided with spring limit stopper, the surface of a plurality of propeller blades is provided with angle mark, the lower end of spring limit stopper is fixedly connected with sliding block, and the outside of a plurality of propeller blades is threadedly connected with pitch locking screw.
[0011] In the root of propeller blade design has the sliding slot, and the sliding slot is designed with spring limit stopper, and the sliding slot is equipped with limit recess, and each limit recess has corresponding angle mark, and when the pitch is adjusted, the root of propeller blade and hub rotate and overlap to form an included angle, and the stopper fills in the included angle, and the sliding block slides into the corresponding limit recess to change the size of the included angle, and the required angle can be selected by the specific angle mark, and the stopper is locked in the position to achieve the quick and accurate adjustment of the angle of propeller blade.
[0012] Further, the number of angle marks is several, and the angle marks correspond to the recesses one by one.
[0013] Further, the spring limit stopper is composed of a stopper and a spring arranged outside the stopper, and the sliding block is matched with the recess.
[0014] Further, the inside of the hub is rotatably connected with a plurality of hub rotating shafts, and the hub rotating shafts are fixedly connected with the propeller blades.
[0015] In summary, the utility model has the following beneficial effects:
[0016] 1、The utility model discloses can let the user not need to help other tools and have professional skill and can easily and quickly, simply, accurately, efficiently adjust the pitch operation of propeller, so that it reaches every propeller blade angle consistent;
[0017] 2、In the root of propeller blade design has the sliding slot, and the sliding slot is designed with spring limit stopper, and the sliding slot is equipped with limit recess, and each limit recess has corresponding angle mark, and when the pitch is adjusted, the root of propeller blade and hub rotate and overlap to form an included angle, and the stopper fills in the included angle, and the sliding block slides into the corresponding limit recess to change the size of the included angle, and the required angle can be selected by the specific angle mark, and the stopper is locked in the position to achieve the quick and accurate adjustment of the angle of propeller blade. ACCURACY
[0018] Figure 1 It is the pitch propeller assembly structure schematic diagram in the embodiment;
[0019] Figure 2 It is the structure schematic diagram in the embodiment Figure 1 A place in the structure schematic diagram;
[0020] Figure 3 is a structural schematic diagram of the structure viewed from the side in the embodiment;
[0021] Figure 4 is a structural schematic diagram of the structure viewed from the side in the embodiment; Figure 3 is a structural schematic diagram of the structure viewed from the side in the embodiment;
[0022] Figure 5 is a structural schematic diagram of the hub shaft in the embodiment.
[0023] In the figure, 1 is a pitch adjusting locking screw; 2 is a sliding groove; 3 is a spring limiting stop lever; 4 is an angle mark; 5 is a hub shaft; 6 is a hub; 7 is a propeller blade; 8 is a limiting groove; and 9 is a sliding block. DETAILED DESCRIPTION
[0024] The utility model will be described in further detail below with reference to the drawings.
[0025] Identical parts are denoted by identical reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a particular part.
[0026] Referring to Figures 1-5 , a propeller pitch adjusting structure in a preferred embodiment of the utility model, comprising a plurality of propeller blades 7 and a hub 6, the root of each of the plurality of propeller blades 7 is provided with a sliding groove 2, the interior of each of the sliding grooves 2 is provided with a limiting groove 8, the interior of each of the sliding grooves 2 is movably provided with a spring limiting stop lever 3, the surface of each of the plurality of propeller blades 7 is provided with an angle mark 4, the lower end of each of the spring limiting stop levers 3 is fixedly connected with a sliding block 9, and the exterior of each of the plurality of propeller blades 7 is threadedly connected with a pitch adjusting locking screw 1.
[0027] The sliding groove 2 is designed at the root of the propeller blade 7, the spring limiting stop lever 3 is designed on the sliding groove 2, and the limiting groove 8 is arranged in the sliding groove 2, each limiting groove 8 has a corresponding angle mark 4, the root of the propeller blade 7 and the hub 6 are rotationally overlapped to form an included angle during pitch adjustment, the stop lever is filled in the included angle, and the sliding of the sliding block 9 into the corresponding limiting groove 8 changes the size of the included angle, and the desired angle can be selected by selecting the specific angle mark 4 and sliding the stop lever to the position, so that the quick and accurate adjustment of the angle of the propeller blade is achieved.
[0028] Referring to Figures 1-5 , the number of angle marks 4 is several, and each angle mark 4 corresponds to a groove.
[0029] Referring to Figures 1-5 , the spring limiting stop lever 3 is composed of a stop lever and a spring arranged outside the stop lever, and the sliding block 9 is adapted to the groove.
[0030] One end of the spring is connected with the surface of the hub 6, and the other end is connected with the top of the stop lever.
[0031] Referring to Figures 1-5 As shown, the hub 6 is rotatably connected with a plurality of hub rotating shafts 5, and the hub rotating shafts 5 are fixedly connected with the propeller blades 7.
[0032] Specific implementation process: first loosen the pitch locking screw 1 of the handle and the hub 6, so that the propeller blades 7 can rotate freely in the hub 6, press the stop lever, and then slide left and right, select the mark (such as No. 3), then slide to No. 3 position and loosen the spring limit stop lever 3, the spring loses pressure and rebounds, and drives the stop lever to rebound and reset upward, at this time, the sliding block 9 is accurately corresponding to the mark due to the limiting effect of the limiting groove 8, then lock the pitch locking screw 1, and the pitch adjusting process is completed.
[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The skilled person in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.
Claims
1. A propeller pitch structure, characterized by: The utility model relates to a propeller blade angle adjustable device, including a plurality of propeller blades (7) and paddle hub (6), the root of a plurality of propeller blades (7) is provided with the sliding groove (2), the inside of sliding groove (2) is provided with the limit recess (8), the inside of sliding groove (2) movably is provided with spring limit stop lever (3), the surface of a plurality of propeller blades (7) is provided with angle mark (4), the lower end of spring limit stop lever (3) is fixedly connected with sliding block (9), the outside of a plurality of propeller blades (7) is all threadedly connected with the pitch locking screw (1).
2. The propeller pitch structure of claim 1, wherein: The number of angle marks (4) is several, and the angle marks (4) correspond to the recesses one by one.
3. The propeller pitch structure of claim 1, wherein: The spring limit stop lever (3) is composed of a stop lever and a spring arranged outside the stop lever, and the sliding block (9) is matched with the recess.
4. The propeller pitch structure of claim 1, wherein: The inside of the paddle hub (6) is rotatably connected with a plurality of hub rotating shafts (5), and the hub rotating shafts (5) are fixedly connected with the propeller blades (7).