Small fan blade dismounting device

Abstract

A small fan blade dismounting device comprises a bottom plate, a through hole is formed in the bottom plate, at least three positioning pins are arranged on the periphery of the through hole in the bottom plate in the circumferential direction, a supporting rod is arranged on the bottom plate, the upper end of the supporting rod is hinged to the middle of a pressing rod through a first pin shaft, and the end of the pressing rod is connected with the upper end of a connecting rod through a second pin shaft. The lower end of the connecting rod is connected with an upper plate through a ball cage type universal joint, at least five pull rods are arranged on the lower side of the upper plate in the circumferential direction at intervals, the upper ends of the pull rods are hinged to the upper plate, the lower ends of the pull rods are hinged to the upper ends of grabbing feet, the grabbing feet are distributed on the periphery of a circular supporting plate, and the lower portions of the grabbing feet are hinged to the circular supporting plate through fifth pin shafts. The bottom of the rib on the upper portion of the fan blade is fastened through the five grabbing feet, the fan blade is evenly stressed in the circumferential direction in the dismounting process, therefore, parts such as the fan blade and a fan base of the fan cannot be damaged, and the utilization rate of the parts after a finished fan product is dismounted is improved.

Description

Technical Field

[0001] This utility model relates to the field of machinery, and more particularly to small fans, especially a small fan blade disassembly device. Background Technology

[0002] In the existing technology, small fans have a compact structure and limited space. Once assembled, they are difficult to disassemble. Even if they are disassembled, it is a destructive disassembly, which damages parts such as the fan blades, making them unusable and resulting in waste. Summary of the Invention

[0003] The purpose of this utility model is to provide a small fan blade disassembly device, which aims to solve the technical problem that the disassembly process of small fans is prone to damage to parts such as the fan blades.

[0004] This utility model discloses a small fan blade disassembly device, comprising a base plate with a through hole. At least three locating pins are circumferentially arranged on the base plate around the outer periphery of the through hole. At least three fan base fixing devices are circumferentially spaced on the base plate around the outer periphery of the locating pins. A support rod is provided on the base plate. The upper end of the support rod is hinged to the middle of a pressure rod via a first pin. The end of the pressure rod is connected to the upper end of a connecting rod via a second pin. The lower end of the connecting rod is connected via a ball cage. The universal joint is connected to an upper plate. At least five tie rods are arranged circumferentially on the lower side of the upper plate. The upper end of each tie rod is hinged to the upper plate through a third pin, and the lower end of each tie rod is hinged to the upper end of a gripper through a fourth pin. The grippers are distributed on the outer periphery of a circular support plate located below the upper plate. The middle of each gripper is hinged to the circular support plate through a fifth pin. The lower end of the gripper is provided with a bend angle that bends towards the axis of the circular support plate.

[0005] Furthermore, each of the aforementioned fan base fixing devices includes a slider seat, in which a slider passes through, and a handle is connected to the upper side of the outer end of the slider.

[0006] Furthermore, the ball cage universal joint includes a spherical connecting rod and a ball cage, with a spherical structure at the lower end of the spherical connecting rod, and the spherical structure is connected to the ball cage.

[0007] Compared with the prior art, the advantages of this invention are positive and obvious. This invention uses five grippers to secure the bottom of the upper ribs of the fan blade, ensuring even circumferential force on the fan blade during disassembly. This prevents damage to the fan blades and base, improving the utilization rate of parts after disassembly. Attached Figure Description

[0008] Figure 1 This is a three-dimensional structural diagram of a small fan blade disassembly device according to the present invention.

[0009] Figure 2 This is a front view schematic diagram of a small fan blade disassembly device according to the present invention.

[0010] Figure 3 This is a top view schematic diagram of a small fan blade disassembly device according to the present invention.

[0011] Figure 4 This is a schematic diagram showing the usage state of a small fan blade disassembly device according to the present invention.

[0012] Figure 5 This is a schematic diagram of a small wind turbine.

[0013] Figure 6 This is an exploded view of a small wind turbine structure. Detailed Implementation

[0014] The present invention will be further described below with reference to embodiments, but the present invention is not limited to these embodiments. Any similar variations using the present invention should be included within the protection scope of the present invention. The use of directions such as up, down, front, back, left, right, center, inside, and outside in the present invention is only for the convenience of clear description and is not intended to limit the technical solution of the present invention.

[0015] like Figures 1-6 As shown, this utility model discloses a small fan blade disassembly device, comprising a base plate 16, a through hole 19 in the base plate 16, at least three positioning pins 17 arranged circumferentially around the outer periphery of the through hole 19 on the base plate 16, at least three fan base fixing devices spaced circumferentially around the outer periphery of the circumference of the positioning pins 17 on the base plate 16, a support rod 3 arranged on the base plate 16, the upper end of the support rod 3 being hinged to the middle of a pressure rod 1 via a first pin 2, the end of the pressure rod 1 being connected to the upper end of a connecting rod 18 via a second pin 4, and the lower end of the connecting rod 18 being connected to a... A ball-cage universal joint 5 is connected to an upper plate 6. At least five tie rods 8 are arranged circumferentially on the lower side of the upper plate 6. The upper end of each tie rod 8 is hinged to the upper plate 6 through a third pin 7. The lower end of each tie rod 8 is hinged to the upper end of a gripper 11 through a fourth pin 10. The grippers 11 are distributed on the outer periphery of a circular support plate 9, which is located below the upper plate 6. The middle of each gripper 11 is hinged to the circular support plate 9 through a fifth pin 12. The lower end of the gripper 11 is provided with a bend angle that bends towards the axis of the circular support plate 9.

[0016] Furthermore, each of the aforementioned fan base fixing devices includes a slider seat 15, in which a slider 14 passes through, and a handle 13 is connected to the upper side of the outer end of the slider 14.

[0017] Furthermore, the ball cage universal joint 5 includes a spherical connecting rod and a ball cage. The lower end of the spherical connecting rod is provided with a spherical structure, which is connected to the ball cage and can be rotated 360 degrees at a specific angle.

[0018] Specifically, in this embodiment, the pin, ball cage universal joint 5, gripper 11, ball connecting rod, ball cage, etc., all adopt well-known solutions in the prior art, which are already known to those skilled in the art, and will not be described in detail here.

[0019] The working process of this embodiment:

[0020] The fan is placed in the through hole 19 on the base plate 16 and positioned by three positioning pins 17. The three sliders 14 are pushed out and locked onto the fan base 20 by the handle 13, so that the fan base 20 is completely fixed. Then, the five grippers 11 are spread out and moved to the upper rib of the fan blade 21. The five grippers 11 are then rotated, and the lower end of the grippers 11 is deflected towards the axis, which tightens the upper rib of the fan blade 21. Then, the pressure rod 1 is pressed down by hand. Using the lever principle, the pressure rod 1, through the connecting rod 18, the ball cage universal joint 5, the upper plate 6, the pull rod 8, and the grippers 11, completely disassembles the fan blade 21 upwards.

[0021] This utility model uses five grippers 11 to fasten the bottom of the upper rib of the fan blade 21, so that the fan blade is evenly stressed in the circumference during disassembly, thus preventing damage to the fan blade 21 and fan base 20 and other parts of the fan, and improving the utilization rate of parts after the fan is disassembled.

Claims

1. A small fan blade disassembly device, characterized in that, The device includes a base plate with a through hole. At least three locating pins are circumferentially arranged around the outer periphery of the through hole on the base plate. At least three fan base fixing devices are circumferentially spaced around the outer periphery of the locating pins on the base plate. A support rod is provided on the base plate. The upper end of the support rod is hinged to the middle of a pressure rod via a first pin. The end of the pressure rod is connected to the upper end of a connecting rod via a second pin. The lower end of the connecting rod is connected to an upper plate via a ball-cage universal joint. At least five tie rods are circumferentially spaced on the lower side of the upper plate. The upper end of each tie rod is hinged to the upper plate via a third pin, and the lower end of each tie rod is hinged to the upper end of a gripper via a fourth pin. The grippers are distributed around the outer periphery of a circular support plate located below the upper plate. The middle of each gripper is hinged to the circular support plate via a fifth pin. The lower end of each gripper has a bend towards the axis of the circular support plate.

2. The small fan blade disassembly device according to claim 1, characterized in that, Each of the aforementioned fan base fixing devices includes a slider seat, in which a slider passes through, and a handle is connected to the upper side of the outer end of the slider.

3. The small fan blade disassembly device according to claim 1, characterized in that, The ball cage universal joint includes a spherical connecting rod and a ball cage. The lower end of the spherical connecting rod is provided with a spherical structure, which is connected to the ball cage.

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