Propeller pitch adjusting device

Abstract

The utility model discloses a propeller pitch adjusting device, which belongs to the technical field of propellers, and comprises a bottom plate and a mounting rack fixed on the bottom plate, one side of the mounting rack is fixedly connected with a placing rack, the placing rack is provided with a propeller body, and the propeller body is fixedly connected with the mounting rack. A lifting table is connected to one side of the mounting frame through two linear sliding rails, a clamping opening is formed in one end of the lifting table, an arc-shaped sliding rail is fixedly connected to the opening position of the top of the clamping opening, a rotating seat is slidably connected to the top of the arc-shaped sliding rail, and a plurality of fastening bolts are in threaded connection to the rotating seat; the propeller body can be fixed in the bayonet through the fastening bolt, under the cooperation of the driving motor, the half gear ring, the gear and the angle sensor, high-precision adjustment of the propeller pitch of the blades is automatically completed, operation and use are convenient and fast, and meanwhile under the cooperation of the containing frame, the supporting plate and the like, the propeller pitch is adjusted more accurately. The problem that the stability is poor when the propeller pitch of the propeller body is adjusted is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of propellers, and more specifically to a propeller pitch regulating device. Background Art

[0002] The pitch of a propeller refers to the distance the propeller moves upward or forward per rotation; the larger the diameter and pitch of the propeller, the greater the pulling (thrusting) force the propeller can provide. Therefore, choosing the right propeller pitch is crucial to ensuring the performance and efficiency of the aircraft.

[0003] Based on the above, the inventors found that when adjusting the propeller pitch, most of the time, the propeller is manually placed on an operating frame, the blades are manually removed, and then the pitch of the blades is adjusted and reinstalled. The adjustment operation is difficult and cumbersome, inconvenient to use, and the adjustment accuracy is not high. At the same time, when adjusting the pitch, the propeller is placed on the operating frame for operation, which has poor stability and is prone to shaking, affecting its normal pitch adjustment work. Therefore, in view of this, the existing structure is studied and improved, and a propeller pitch adjustment device is provided, in order to achieve a more practical purpose. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a propeller pitch adjustment device, which can fix the propeller body in the bayonet by means of fastening bolts, and automatically complete high-precision adjustment of the pitch of the blades with the cooperation of a drive motor, a half-toothed ring, a gear and an angle sensor. The operation is convenient and quick. At the same time, when used in conjunction with a placement rack and a support plate, the problem of poor stability of the propeller body during pitch adjustment is solved.

[0006] 2. Technical solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A propeller pitch adjustment device comprises a base plate and a mounting frame fixed to the base plate, wherein one side of the mounting frame is fixedly connected to a placing frame, and a propeller body is arranged on the placing frame, and one side of the mounting frame is connected to a lifting platform through two linear slide rails, and one end of the lifting platform is provided with a bayonet, and an arcuate slide rail is fixedly connected to the top opening position of the bayonet, and a rotating seat is slidably connected to the top of the arcuate slide rail, and a plurality of fastening bolts are threadedly connected to the rotating seat, and a semi-toothed ring is fixedly connected to the outer periphery of the rotating seat, and a driving motor is installed on the top of the lifting platform, and the output end of the driving motor is connected to a gear through a coupling transmission, and the gear is meshed with the semi-toothed ring, and an angle sensor is also installed on the top of the lifting platform and is located on one side of the gear.

[0009] Furthermore, the blades of the propeller body are located in the bayonet, and one end of the fastening bolt abuts against the outer periphery of the blades on the propeller body.

[0010] Furthermore, the placement rack includes a fixed seat fixed to one side of the mounting rack, one end of the fixed seat is fixedly connected to a connecting shaft, one end of the connecting shaft is fixedly connected to a screw, the outer peripheral thread sleeve of the screw is provided with a tightening knob, the wheel sleeve on the propeller body is provided on the connecting shaft and is fixed by the tightening knob and the screw.

[0011] Furthermore, a lifting cylinder is installed on the top of the mounting frame, and the output end of the lifting cylinder is fixedly connected to the top of the lifting platform.

[0012] Furthermore, one end of the rotating seat is opened, a sliding groove is provided at the bottom of the rotating seat, and the inner wall of the sliding groove is slidably connected to the outer periphery of the arc-shaped sliding rail.

[0013] Furthermore, the top of the base plate is fixedly connected to a track, the top of the track is slidably connected to a moving seat, a positioning cylinder is installed on the top of the moving seat, the output end of the positioning cylinder is fixedly connected to a support plate, and the top of the support plate abuts against the bottom of the wheel disc on the propeller body.

[0014] Furthermore, a fixing bolt is threadedly connected to one side of the movable seat, and one end of the fixing bolt extends into the movable seat and abuts against the outer periphery of the track.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] (1) In this solution, the lifting platform is moved downward by the lifting cylinder to limit the propeller body stuck in the bayonet, and the blades on the propeller body can be firmly fixed by tightening the fastening bolts. Under the drive of the drive motor, the half-toothed ring and the gear cooperate with each other to enable the blades on the propeller body to rotate, thereby realizing the pitch adjustment of the blades. The operation is simple and the use is convenient and quick. At the same time, an angle sensor is added to greatly improve the accuracy of the pitch adjustment.

[0018] (2) In this solution, after the wheel disc on the propeller body is put on the connecting shaft by setting a placement frame, the propeller body is installed and fixed by using the cooperation of the tightening knob and the screw. At the same time, a positioning cylinder is added to move the support plate up and against the bottom of the wheel disc on the propeller body to support and limit it, which greatly improves the stability during the adjustment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the mounting bracket position structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the position structure of the lifting platform of the utility model;

[0022] Figure 4 It is a schematic diagram of the position structure of the placement rack of the utility model.

[0023] Description of the numbers in the figure:

[0024] 1. Bottom plate;

[0025] 2. Mounting frame;

[0026] 3. Placement rack; 301. Fixing seat; 302. Connecting shaft; 303. Screw rod; 304. Fastening knob;

[0027] 4. Propeller body;

[0028] 5. Linear slide rail;

[0029] 6. Lifting platform;

[0030] 7. Bayonet;

[0031] 8. Arc slide rail;

[0032] 9. Rotating seat;

[0033] 10. Tighten the bolts;

[0034] 11. Half tooth ring;

[0035] 12. Driving motor;

[0036] 13. Gear;

[0037] 14. Angle sensor;

[0038] 15. Lifting cylinder;

[0039] 16. Track;

[0040] 17. Mobile seat;

[0041] 18. Positioning cylinder;

[0042] 19. Pallet;

[0043] 20. Fix the bolts. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0045] Example:

[0046] See also Figure 1-4 A propeller pitch adjustment device comprises a base plate 1 and a mounting frame 2 fixed to the base plate 1, a placing frame 3 is fixedly connected to one side of the mounting frame 2, a propeller body 4 is arranged on the placing frame 3, a lifting platform 6 is connected to one side of the mounting frame 2 through two linear slide rails 5, a bayonet 7 is opened at one end of the lifting platform 6, an arcuate slide rail 8 is fixedly connected to the top opening position of the bayonet 7, a rotating seat 9 is slidably connected to the top of the arcuate slide rail 8, a plurality of fastening bolts 10 are threadedly connected to the rotating seat 9, a semi-toothed ring 11 is fixedly connected to the outer periphery of the rotating seat 9, a driving motor 12 is installed on the top of the lifting platform 6, an output end of the driving motor 12 is connected to a gear 13 through a coupling transmission, the gear 13 is meshed with the semi-toothed ring 11, and an angle sensor 14 is also installed on the top of the lifting platform 6 and is located on one side of the gear 13.

[0047] See also Figure 1 The blades of the propeller body 4 are located in the bayonet 7 , and one end of the fastening bolt 10 abuts against the outer periphery of the blades on the propeller body 4 .

[0048] See also Figure 4The placement frame 3 includes a fixing seat 301 fixed to one side of the mounting frame 2, one end of the fixing seat 301 is fixedly connected to a connecting shaft 302, one end of the connecting shaft 302 is fixedly connected to a screw 303, the outer peripheral thread sleeve of the screw 303 is provided with a tightening knob 304, the wheel on the propeller body 4 is sleeved on the connecting shaft 302, and is fixed by the tightening knob 304 and the screw 303.

[0049] See also Figure 1 and Figure 2 A lifting cylinder 15 is installed on the top of the mounting frame 2, and the output end of the lifting cylinder 15 is fixedly connected to the top of the lifting platform 6.

[0050] See also Figure 3 One end of the rotating seat 9 is open, a slide groove is provided at the bottom of the rotating seat 9, and the inner wall of the slide groove is slidably connected to the outer periphery of the arc-shaped slide rail 8.

[0051] See also Figure 1 The top of the base plate 1 is fixedly connected to a track 16, the top of the track 16 is slidably connected to a moving seat 17, a positioning cylinder 18 is installed on the top of the moving seat 17, the output end of the positioning cylinder 18 is fixedly connected to a support plate 19, and the top of the support plate 19 abuts against the bottom of the wheel disc on the propeller body 4.

[0052] See also Figure 1 A fixing bolt 20 is threadedly connected to one side of the movable seat 17 , and one end of the fixing bolt 20 extends into the movable seat 17 and abuts against the outer periphery of the track 16 .

[0053] When in use: the wheel disc on the propeller body 4 is sleeved on the connecting shaft 302, and then the position of the propeller body 4 is adjusted, and the blades on the propeller body 4 are snapped into the bayonet 7. At this time, the fastening knob 304 is tightened to fix the wheel disc on the propeller body 4, and then the fastening bolt 10 is tightened to tighten the blades on the propeller body 4, and at the same time, the positioning cylinder 18 is moved to the bottom of the propeller body 4, and then the positioning cylinder 18 is used to move the support plate 19 upward to support the bottom of the wheel disc of the propeller body 4, so as to improve the stability of its overall operation. At this time, the screws on the wheel disc are loosened to allow the blades to move, and then the drive motor 12 is started. Under the cooperation of the semi-toothed ring 11 and the gear 13, the rotating seat 9 can be driven to rotate on the arc slide rail 8. When the rotating seat 9 rotates, the blades on the propeller body 4 are driven to rotate. At this time, under the cooperation of the angle sensor 14, the rotation angle data can be transmitted to the peripheral control device to realize real-time monitoring. The whole operation is not only convenient and fast, but also greatly improves the accuracy of pitch adjustment.

[0054] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0055] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A propeller pitch adjustment device, comprising a base plate (1) and a mounting frame (2) fixed to the base plate (1), a placement frame (3) fixedly connected to one side of the mounting frame (2), a propeller body (4) being arranged on the placement frame (3), characterized in that: One side of the mounting frame (2) is connected to a lifting platform (6) via two linear slide rails (5); a bayonet (7) is provided at one end of the lifting platform (6); an arcuate slide rail (8) is fixedly connected to the top opening of the bayonet (7); a rotating seat (9) is slidably connected to the top of the arcuate slide rail (8); a plurality of fastening bolts (10) are threadedly connected to the rotating seat (9); a semi-toothed ring (11) is fixedly connected to the outer periphery of the rotating seat (9); a driving motor (12) is installed on the top of the lifting platform (6); an output end of the driving motor (12) is connected to a gear (13) via a coupling transmission; the gear (13) is meshingly connected to the semi-toothed ring (11); an angle sensor (14) is also installed on the top of the lifting platform (6) and is located on one side of the gear (13).

2. A propeller pitch adjustment device according to claim 1, characterized in that: The blades of the propeller body (4) are located in the bayonet (7), and one end of the fastening bolt (10) abuts against the outer periphery of the blades on the propeller body (4).

3. A propeller pitch adjustment device according to claim 1, characterized in that: The placement frame (3) comprises a fixing seat (301) fixed to one side of the mounting frame (2); one end of the fixing seat (301) is fixedly connected to a connecting shaft (302); one end of the connecting shaft (302) is fixedly connected to a screw rod (303); a tightening knob (304) is provided on the outer thread of the screw rod (303); a wheel disc on the propeller body (4) is sleeved on the connecting shaft (302) and is fixed by the tightening knob (304) and the screw rod (303).

4. A propeller pitch adjustment device according to claim 1, characterized in that: A lifting cylinder (15) is installed at the top of the mounting frame (2), and an output end of the lifting cylinder (15) is fixedly connected to the top of the lifting platform (6).

5. A propeller pitch adjustment device according to claim 1, characterized in that: One end of the rotating seat (9) is open, a sliding groove is provided at the bottom of the rotating seat (9), and the inner wall of the sliding groove is slidably connected to the outer periphery of the arc-shaped sliding rail (8).

6. A propeller pitch adjustment device according to claim 1, characterized in that: The top of the bottom plate (1) is fixedly connected to a track (16), the top of the track (16) is slidably connected to a moving seat (17), a positioning cylinder (18) is installed on the top of the moving seat (17), the output end of the positioning cylinder (18) is fixedly connected to a support plate (19), and the top of the support plate (19) abuts against the bottom of the wheel disc on the propeller body (4).

7. A propeller pitch adjustment device according to claim 6, characterized in that: A fixing bolt (20) is threadedly connected to one side of the movable seat (17), and one end of the fixing bolt (20) extends into the movable seat (17) and abuts against the outer periphery of the track (16).

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