A portable propeller adjustment device

Abstract

The application discloses a portable propeller adjusting device, which comprises a fixing flange, a supporting rod and a fixing base, the lower end of the supporting rod is fixedly connected with the fixing base through internal threads, the bottom end of the fixing base is provided with a position fixing mechanism for limiting the position of the supporting rod, the inside of the supporting rod is provided with a rotating bearing, the rotating bearing is press-fitted at the upper end of the supporting rod, the inside of the rotating bearing is provided with the fixing flange through splines, the bottom end of the fixing flange is matched with the inside of the rotating bearing, the inside of the supporting rod is provided with an air slot, a plurality of locking holes penetrating through the air slot are formed in the outer wall of the supporting rod, and the inside of the locking holes is provided with a limiting mechanism for penetrating through the rotating bearing and extending into the inside of the fixing flange. According to the technical scheme, the position of the propeller hub is fixed by inserting the locking pin into the locking hole and into the fixing flange, so that the displacement caused by knocking is avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of propeller devices, and more particularly, the present application relates to a portable propeller adjusting device. BACKGROUND

[0002] During the actual use and verification of a constant pitch propeller, the propeller blade angle and runout need to be checked, and the adjustment of the propeller blade requires the propeller and the propeller hub to be fixed on a horizontal platform as a 0° reference plane to adjust the appropriate blade angle. However, except for propeller manufacturers, professional manufacturers do not have suitable professional adjusting equipment. The propeller needs to be returned to the factory or professionally debugged, which is restricted by the time period and cost.

[0003] However, the existing portable propeller adjusting device has the following problems in use: the traditional professional horizontal platform is used as a reference positioning, which requires 3 people to assist in operation at the same time, is not easy to fix, is prone to displacement during adjustment, is prone to scratching the horizontal platform, has high maintenance cost, and can only be adjusted in fixed places, which does not meet the requirements of variable test and debugging sites. Moreover, the installation size range of the propeller hub is fixed, and it is not convenient to fix propeller hubs of different sizes. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a portable propeller adjusting device, which is designed for adjustable constant pitch propellers, and is based on the actual work difficulty as the starting point. The present application effectively improves the work convenience and accumulates experience and schemes for the research and development, debugging and maintenance of subsequent products.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: a portable propeller adjusting device, comprising a fixed flange, a support rod and a fixed base, the lower end of the support rod is fixedly connected with the fixed base through internal threads, the fixed base is provided with a position limiting mechanism at the bottom end for limiting the position of the support rod, the inside of the support rod is provided with a rotating bearing, and the rotating bearing is press-fitted at the upper end of the support rod, the inside of the rotating bearing is provided with a fixed flange through splines, and the bottom end of the fixed flange matches the inside of the rotating bearing, the inside of the support rod is provided with an empty slot, a plurality of locking holes penetrating through the empty slot are formed in the outer wall of the support rod, and the inside of the locking holes is provided with a limiting mechanism for penetrating through the rotating bearing and extending into the inside of the fixed flange.

[0006] The portable propeller adjusting device disclosed by the present application comprises a fixed mechanism and an adjusting screw, the fixed base is provided with an adjusting screw at the bottom end of each corner position for fixing the position of the support rod, and the outer wall of the adjusting screw is fixedly connected with the bottom end of the fixed base through external threads.

[0007] The utility model discloses a portable propeller adjusting device, the bottom of adjusting stud is provided with a plurality of fixed suction cup.

[0008] The utility model discloses a portable propeller adjusting device, the top of fixed flange is fixedly connected with propeller hub through the bolt of elliptic bolt hole of fixed flange outer wall.

[0009] The utility model discloses a portable propeller adjusting device, the outer wall of propeller hub is provided with a plurality of propeller blades.

[0010] The utility model discloses a portable propeller adjusting device, the inside of locking lock hole is provided with locking pin, and the inside of locking pin outer wall and rotating bearing and fixed flange are matched.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] 1, the utility model discloses through locking pin inserts locking lock hole and inserts fixed flange, and the position of propeller hub is fixed, avoids the situation of displacement due to knocking.

[0013] 2, the utility model discloses through the suction force of suction cup, the fixed base is fixed to the ground or bottom plate, so that the position of fixed base, support rod and fixed flange on the ground or board is fixed, and the operator is convenient for adjusting the propeller hub and limiting.

[0014] 3, the utility model discloses the fixed flange is installed with a plurality of elliptic bolt holes, so that the common or universal of different hub size can be satisfied, and the support rod is hollow structure, so that the adjusting device is small in size, and the assembly is convenient, is convenient for travelling and carrying, and is convenient for adjusting.

[0015] The utility model will be described in more detail in connection with the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0016] The contents expressed by each drawing of the specification and the marks in the drawing are briefly described as follows:

[0017] Figure 1 It is the three-dimensional assembly decomposition structure schematic diagram of the utility model;

[0018] Figure 2 It is the three-dimensional assembly structure schematic diagram of the utility model;

[0019] Figure 3 It is the fixed flange three-dimensional structure schematic diagram of the utility model;

[0020] Figure 4is a schematic diagram of the support rod and locking pin of the application in perspective view;

[0021] Figure 5 is a schematic diagram of the fixed base and adjusting stud of the application in perspective view.

[0022] In the figure, the following are marked: 1, fixed flange; 2, support rod; 3, fixed base; 4, adjusting stud; 5, locking hole; 6, locking pin; 7, rotary bearing; 8, propeller hub. DETAILED DESCRIPTION

[0023] The specific embodiments of the application, such as the shape, structure, mutual position and connection relationship between the parts, the function and working principle of each part, the manufacturing process and the method of operation and use, etc. of each component involved, are further described below with reference to the drawings, to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the application.

[0024] Example 1, as Figures 1-2 shown, the application provides a technical solution: a portable propeller adjusting device, comprising a fixed flange 1, a support rod 2 and a fixed base 3, the lower end of the support rod 2 is fixed by internal threads with the fixed base 3, the bottom end of the fixed base 3 is provided with a position limiting and fixing mechanism for the support rod 2, the fixed mechanism comprises a fixed base 3 and an adjusting stud 4, the bottom end of the fixed base 3 is provided with an adjusting stud 4 for fixing the position of the support rod 2 at the four corners, and the outer wall of the adjusting stud 4 is fixed by external threads with the bottom end of the fixed base 3, the bottom end of the adjusting stud 4 is provided with a plurality of fixed suction cups, the outer wall of the fixed flange 1 is provided with a plurality of oval bolt holes, the top end of the fixed flange 1 is fixedly connected with a propeller hub 8 by bolts penetrating the oval bolt holes, the outer wall of the propeller hub 8 is provided with a plurality of propeller blades, after the fixed flange 1, the support rod 2 and the fixed base 3 are assembled, the adjusting stud 4 is connected with the bottom end of the fixed base 3 by rotating, then the suction cups at the adjusting stud 4 are attached to the ground or the bottom plate, then the suction cups are inserted into the suction cups by the suction device, the air in the suction cups is sucked out, so that the suction force is generated in the suction cups, which is convenient for fixing the fixed base 3 to the ground or the bottom plate, and the structure is convenient for fixing the fixed base 3, the support rod 2 and the fixed flange 1 on the ground or the plate surface, then it is convenient for the operator to adjust the propeller hub 8.

[0025] Example 2, as Figures 1-5As shown, the present application provides a technical solution: a portable propeller adjusting device, which comprises a support rod 2, the inside of the support rod 2 is provided with a rotating bearing 7, and the rotating bearing 7 is press-fitted at the upper end of the support rod 2, the inside of the rotating bearing 7 is provided with a fixed flange 1 through spline, and the bottom end of the fixed flange 1 matches the inside of the rotating bearing 7, the inside of the support rod 2 is provided with a hollow slot, the outer wall of the support rod 2 is provided with a plurality of locking holes 5 penetrating the hollow slot, and the inside of the locking hole 5 is provided with a limiting mechanism for penetrating the rotating bearing 7 and extending into the inside of the fixed flange 1, the limiting mechanism comprises a locking pin 6, the inside of the locking hole 5 is provided with the locking pin 6, and the outer wall of the locking pin 6 matches the inside of the rotating bearing 7 and the fixed flange 1, when the propeller angle needs to be adjusted, first hold the locking pin 6 with hand and insert it into the locking hole 5, then the locking hole 5 penetrates the rotating bearing 7 and inserts into the fixed flange 1, the rotating position of the propeller hub 8 is fixed, the propeller blade above the outer wall of the propeller hub 8 is prevented from rotating, then the operator uses a rubber hammer to gently knock the propeller blade at the propeller hub 8, after the angle is adjusted, the locking pin 6 is taken out, so that the propeller blade at the propeller hub 8 rotates.

[0026] By aligning the propeller hub 8 to be adjusted with the top of the fixed flange 1, then inserting the bolt of appropriate diameter into the oval bolt hole of the fixed flange 1, then fixing the position of the bolt with a nut, then inserting the fixed flange 1 into the rotating bearing 7, since the fixed flange 1 and the rotating bearing 7 are connected by spline, the torque force is increased, and the rotating bearing 7 is press-fitted on the top of the support rod 2, so that the propeller hub 8 is fixed at the top of the support rod 2 through the rotating bearing 7, then the fixed base 3 is rotated to engage with the lower part of the support rod 2, so that the fixed base 3 is fixed at the lower part of the support rod 2, at this time, the adjusting stud 4 is rotated in turn, so that the adjusting stud 4 is fixed below the fixed base 3, when the angle of the propeller at the propeller hub 8 needs to be adjusted, the sucker at the adjusting stud 4 needs to be attached to the ground or the bottom plate, then the suction device is inserted into the sucker, the air in the sucker is sucked out, so that the suction force is generated in the sucker, and the fixed base 3 is fixed on the ground or the bottom plate.

[0027] Then, before adjusting the angle of the propeller blade at the propeller hub 8, the locking pin 6 needs to be taken out and inserted into the locking hole 5 and the fixed flange 1, the position of the propeller hub 8 is fixed, so as to avoid displacement due to knocking, at this time, the operator needs to take out the rubber hammer to knock the propeller blade at the propeller hub 8, adjust the angle of the propeller blade at the propeller hub 8, and the operation is simple, since the fixed flange 1 is provided with a plurality of oval bolt holes, so as to meet the common or universal use of different propeller sizes, and the support rod 2 is a hollow structure, so that the adjusting device has small volume, is easy to assemble, is convenient to carry out, and is convenient to adjust.

[0028] The application is described above by way of example with reference to the accompanying drawings without limitation to the specifically described embodiments. Any modifications of the method concept and the technical solution of the application, or direct application of the method concept and the technical solution of the application to other occasions without modification, are within the scope of the application.

Claims

1. A portable propeller adjustment device comprising a fixed flange, a support rod and a fixed base, characterized in that: The lower end of the support rod is fixed by internal thread with the fixed base, the fixed base bottom end is provided with a fixed mechanism for limiting the position of the support rod, the inside of the support rod is provided with a rotating bearing, and the rotating bearing is press-fitted in the upper end of the support rod, the inside of the rotating bearing is provided with a fixed flange through spline, and the bottom end of the fixed flange matches the inside of the rotating bearing, the inside of the support rod is provided with a hollow slot, the outer wall of the support rod is provided with a plurality of locking holes penetrating the hollow slot, and the inside of the locking hole is provided with a limiting mechanism for penetrating the rotating bearing and extending to the inside of the fixed flange, the fixed mechanism comprises a fixed base and an adjusting stud, the bottom end of the fixed base is provided with an adjusting stud for fixing the position of the support rod at the four corner positions, and the outer wall of the adjusting stud is fixed by external thread with the bottom end of the fixed base, the bottom end of the adjusting stud is provided with a plurality of fixed suction cups, the outer wall of the fixed flange is provided with a plurality of oval bolt holes, the top end of the fixed flange is fixedly connected with a propeller hub through the bolt penetrating the oval bolt hole, the outer wall of the propeller hub is provided with a plurality of propeller blades, and the limiting mechanism comprises a locking pin, the inside of the locking hole is provided with a locking pin, and the outer wall of the locking pin matches the inside of the rotating bearing and the fixed flange.

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