Helicopter blade lifting device

Abstract

The utility model belongs to the technical field of helicopter guarantee equipment, concretely belongs to a kind of helicopter paddle lifting device, including base, hoist, telescopic link, swing mechanism, clamping part;Telescopic link, hoist are installed on base;Rope connection in hoist is in the wheel shaft of telescopic link;The upper end of telescopic link is connected swing mechanism;In swing mechanism, including base plate, upper plate, spring;Corresponding position is provided with connecting lug plate on the upside of base plate, the downside of upper plate, is connected by pin shaft;Between base plate and upper plate, multiple springs are provided;The upper portion of upper plate is lifting frame, electric push rod is connected in the both sides of lifting frame, and jaw is connected in the end of electric push rod;Jaw axle is connected on the upper end plate of lifting frame.The utility model simple structure, light and easy, portable, when in-house, field operation, all are convenient to use.

Description

Technical Field

[0001] This utility model belongs to the technical field of helicopter support equipment, specifically to a helicopter rotor blade lifting device. Background Technology

[0002] In the existing technology, the installation and removal of helicopter rotor blades mainly rely on manual lifting or gantry cranes / cranes. However, the existing methods have the following drawbacks: 1. The method of lifting manually in conjunction with a hydraulic ladder is time-consuming and labor-intensive, resulting in low work efficiency; 2. The gantry crane cannot be used when installing or disassembling its blades outside the workshop, which greatly limits its application location; 3. Cranes are large in size and expensive, and are not convenient to use.

[0003] This shows that a more convenient lifting device is needed when installing and removing helicopter rotor blades. Summary of the Invention

[0004] This invention provides a helicopter rotor blade lifting device to facilitate lifting.

[0005] A helicopter rotor lifting device includes a base, a winch, a telescopic rod, a swing mechanism, and a clamping part; The telescopic pole and winch are mounted on the base; the winch rope is connected to the axle of the telescopic pole. The upper end of the telescopic rod is connected to a swing mechanism; the swing mechanism includes a base plate, an upper plate, and springs; connecting ear plates are provided at corresponding positions on the upper side of the base plate and the lower side of the upper plate, and are connected by pins; multiple springs are provided between the base plate and the upper plate. The upper part of the upper plate is a lifting frame. Electric push rods are connected to both sides of the lifting frame, and grippers are connected to the ends of the electric push rods. The gripper shafts are connected to the upper end plate of the lifting frame.

[0006] Furthermore, wheels are installed at the four corners of the bottom of the base.

[0007] Furthermore, the base is also equipped with telescopic feet, and wheels are mounted on the telescopic feet.

[0008] Furthermore, side wheels are installed on the side of the base.

[0009] Furthermore, a handle railing is also installed on the side of the base.

[0010] Furthermore, the upper surface of the upper plate matches the shape of the lower side of the blade.

[0011] Furthermore, a laser pointer is also installed on the upper plate.

[0012] The beneficial effects of this utility model are: 1. This utility model has a simple and lightweight structure, is portable, and is convenient to use in both factory and field operations; the extension and retraction of the telescopic rod is achieved through a winch, thereby realizing the lifting and lowering of the blades; 2. Bottom wheels on the base make it easy to move the lifting device; 3. Wheels and handle rails are installed on the sides of the base; when the telescopic rod of the lifting device is shortened, it can be stored on the vehicle or unloaded from the vehicle. Hold the handle rails and push forward or pull backward. The side wheels play an auxiliary role. 4. A laser pointer is installed on the upper plate. The laser pointer is aligned with the center of gravity of the propeller to determine the position of the lifting device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the swing mechanism and clamping part in this utility model; Figure 3 This is a schematic diagram of the swing mechanism and clamping part in this utility model; Figure 4 This is a schematic diagram illustrating the use of this utility model; Figure 5 This is a schematic diagram showing the grippers clamping the blades. In the diagram: 1. Base; 2. Winch; 3. Telescopic rod; 3.1. Axle; 4.1. Base plate; 4.2. Top plate; 4.3. Spring; 5.1. Electric push rod; 5.2. Gripper; 5.3. Top end plate; 5.4. Laser pointer; 6. Paddle blade; 7. Wheel; 8. Telescopic foot; 9. Side wheel; 10. Handle railing. Detailed Implementation

[0014] The technical solution of the present invention will be further explained and illustrated below through specific embodiments. Example 1

[0015] A helicopter rotor lifting device includes a base 1, a winch 2, a telescopic rod 3, a swing mechanism, and a clamping part; The telescopic pole 3 and the winch 3 are mounted on the base 1; the rope in the winch 3 is connected to the wheel axle 3.1 of the telescopic pole 3; The upper end of the telescopic rod 3 is connected to a swing mechanism; the swing mechanism includes a base plate 4.1, an upper plate 4.2, and springs 4.3; connecting lugs are provided at corresponding positions on the upper side of the base plate 4.1 and the lower side of the upper plate 4.2, and are connected by pins; multiple springs 4.3 are provided between the base plate 4.1 and the upper plate 4.2; under the action of the joint formed by the lugs of the swing mechanism and the springs, the angle is adjusted following the blade during the blade lifting process; after the blade pin is removed, when the blade is pushed upward, the root of the blade does not move, and the swing mechanism can compensate for the angle; The upper part of the upper plate 4.2 is a lifting frame. Electric push rods 5.1 are connected to both sides of the lifting frame. Grippers 5.2 are connected to the ends of the electric push rods 5.1. The grippers 5.2 are axially connected to the upper end plate 5.3 of the lifting frame. The upper surface of the upper end plate 5.3 of the lifting machine matches the shape of the lower side of the blade 6.

[0016] An electrical control cabinet is also installed on the base. The electrical control cabinet is a mature technology in the prior art and will not be described in detail here. In addition, in this embodiment, the telescopic rod is a 3-section telescopic rod. The winding method of the winch rope and the axle of the telescopic rod is a mature technology in the prior art and will not be described in detail here either. Example 2

[0017] Based on the structure of Embodiment 1, wheels 7 are installed at the four corners of the bottom of the base 1; telescopic feet 8 are also installed on the base 1, and wheels are installed on the telescopic feet 8; in this embodiment, two telescopic feet are provided, which are staggered on opposite sides for easy retraction and to assist the lifting device in fixing and stabilizing when the support feet are extended; side wheels 9 are installed on the side of the base 1; and handle railings 10 are also installed on the opposite side of the base 1. Example 3

[0018] Based on the structure of Embodiment 1, a laser pointer 5.4 is also installed on the upper end plate 5.3. In this embodiment, the laser pointer 5.4 is provided in two locations.

[0019] When using this utility model: First, align the upper end plate 5.3 on the device with the center of gravity of the blade 6. Usually, the center of gravity is marked with a circle on the lower surface of the blade 6. When a laser pointer 5.4 is set, the two laser pointers 5.4 should point to the two ends of the circle, close to the two ends of the circle's diameter. Next, the winch 2 drives the telescopic rod 3 to extend, so that the upper end plate 5.3 contacts the blade 6; and clamps the blade 6 with the jaws 5.2 and lifts it up; After that, several tasks are carried out, such as disassembling the blade pin or checking the blade pin for being out of position. If the blade 6 is to be disassembled, after the blade pin is disassembled, the winch 2 drives the telescopic rod 3 to shorten, which can lower the blade 6. The same procedure applies to installing the propeller.

Claims

1. A helicopter rotor blade lifting device, characterized in that, It includes a base, winch, telescopic rod, swing mechanism, and clamping parts; The telescopic pole and winch are mounted on the base; the winch rope is connected to the axle of the telescopic pole. The upper end of the telescopic rod is connected to a swing mechanism; the swing mechanism includes a base plate, an upper plate, and springs; connecting ear plates are provided at corresponding positions on the upper side of the base plate and the lower side of the upper plate, and are connected by pins; multiple springs are provided between the base plate and the upper plate. The upper part of the upper plate is a lifting frame. Electric push rods are connected to both sides of the lifting frame, and grippers are connected to the ends of the electric push rods. The gripper shafts are connected to the upper end plate of the lifting frame.

2. The helicopter rotor blade lifting device according to claim 1, characterized in that, The base has wheels installed at each of its four corners.

3. The helicopter rotor blade lifting device according to claim 2, characterized in that, The base is also equipped with telescopic feet, and wheels are mounted on the telescopic feet.

4. The helicopter rotor blade lifting device according to claim 3, characterized in that, Side wheels are installed on the side of the base.

5. The helicopter rotor blade lifting device according to claim 1, characterized in that, The base is also equipped with a handle railing on its side.

6. The helicopter rotor blade lifting device according to claim 1, characterized in that, The upper surface of the upper plate matches the shape of the lower side of the blade.

7. The helicopter rotor blade lifting device according to claim 1, characterized in that, A laser pointer is also installed on the upper plate.

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