Lightweight aluminum alloy composite fan rotor blade mounting seat
By designing an annular mounting slot and elastic locking bolt structure for the aluminum alloy composite wind turbine rotor blade mounting base, the problem of needing to replace the entire blade when it wears out in the existing technology is solved, realizing the convenience of disassembling and replacing the blades individually and reducing material waste.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU MANQIWEI MOTOR TECH CO LTD
- Filing Date
- 2025-08-26
- Publication Date
- 2026-05-29
AI Technical Summary
The existing rotor blade mounting base is fixedly connected to the blade, which means that the entire blade needs to be replaced when it wears out, which is cumbersome and wastes materials.
A mounting base for aluminum alloy composite fan rotor blades is designed, which adopts an annular mounting slot and elastic locking bolt structure. The blade seat is fixed by inserting the locking bolt through the positioning hole, and the blades can be easily disassembled and replaced individually with plastic buckles and side springs.
It enables individual disassembly and replacement of wind turbine blades, reducing material waste, simplifying the operation process, and improving maintenance efficiency.
Smart Images

Figure CN224301007U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lightweight fan technology, specifically a lightweight aluminum alloy composite fan rotor blade mounting base. Background Technology
[0002] Lightweight wind turbines refer to wind turbines designed and manufactured by applying new materials, designs, and processes, especially low-density aluminum alloy composite materials, which are a direct source of lightweighting. This approach aims to significantly reduce the weight of key components such as blades, casings, and stators while ensuring structural strength, operational reliability, and power generation performance. Maintaining or enhancing electromagnetic performance, such as generating magnetic fields and achieving electromechanical energy conversion, while minimizing weight is crucial for overall weight reduction, cost reduction, efficiency improvement, and reliability enhancement. The rotor blades are the core components of the wind turbine, responsible for converting the mechanical energy of rotating machinery into the kinetic or pressure energy of the fluid through interaction with the fluid, or vice versa.
[0003] When the aforementioned rotor blades are used in lightweight fans, they need to be fixed with a mounting base. The mounting base is usually circular in shape. By arranging multiple sets of blades in a ring on the surface of the mounting base, and driving the rotor shaft connected to the shaft, fluid kinetic energy can be generated in the fan cavity to achieve stable exhaust. However, such mounting bases are mostly fixedly connected to the blades. This means that when a single blade is worn and needs to be replaced, the entire mounting base needs to be replaced. The operation is cumbersome and wasteful of materials. Therefore, we propose a lightweight aluminum alloy composite fan rotor blade mounting base. Utility Model Content
[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.
[0005] The purpose of this invention is to provide a lightweight aluminum alloy composite fan rotor blade mounting base to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a lightweight aluminum alloy composite fan rotor blade mounting base, comprising a mounting base, a blade mounting plate fixed on one side of the mounting base, the blade mounting plate comprising a plate frame, a mounting slot provided on one outer wall of the plate frame, plastic buckles distributed on both sides of the inner wall of the mounting slot, a side spring connected to one end of the plastic buckles, a blade seat engaged around the inner wall of the mounting slot, a fan blade fixed on the top surface of the blade seat, inner grooves provided on both outer walls of the blade seat, a positioning hole provided inside one side of the blade seat, a locking bolt passing through the positioning hole, a lever fixed to the top surface of one end of the locking bolt, and a telescopic spring sleeved on one end of the locking bolt, the telescopic spring being fitted into a telescopic slide.
[0007] Furthermore, the telescopic slide and the mounting slot are circumferentially formed along the surface of the tray, and the locking bolt forms an elastic sliding structure with the telescopic slide via a telescopic spring.
[0008] Furthermore, the blade seat is fixed by being inserted into a locking bolt through a positioning hole, and the blade seat and the fan blade are fixedly connected.
[0009] Furthermore, the plastic buckle forms an elastic telescopic structure with the inner walls on both sides of the mounting slot through the side spring, and the blade seat is elastically fastened to both sides of the mounting slot through the plastic buckles on both sides.
[0010] Furthermore, the plate frame is fixedly connected to the outer wall of one side of the mounting base, and the fan blades are arranged in a ring along the surface of the plate frame.
[0011] Furthermore, the mounting base includes a base frame, a shaft sleeve is fixed to the axis of the base frame, a rotor shaft is fixed to the axis of the shaft sleeve, and a bearing is sleeved on one end of the rotor shaft.
[0012] Furthermore, the base frame is rotatably coupled with the rotor shaft and bearing, and one side of the base frame is fixedly connected to the blade mounting plate.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] The rotor blade mounting base has ring-shaped mounting slots on the surface of the plate frame. Each set of fan blades can be engaged with the inside of the mounting slot through an integrated blade seat. With the positioning hole of the blade seat, the elastically extended locking bolt can be inserted into the positioning hole, thereby keeping the blade seat and the inside of the mounting slot engaged and locked. During disassembly, simply slide the lever along the telescopic slide to slide out the connected locking bolt. The disassembly and installation process is convenient. Individual fan blades can be removed and replaced separately, reducing material waste and facilitating quick cleaning and use.
[0015] When the blade seat of this rotor blade mounting bracket is engaged inside the mounting slot, the inner grooves on both sides of the blade seat will align with the plastic clips on both sides. At this time, the side springs connected to the plastic clips can be used to elastically engage with the sides of the blade seat, further improving the structural stability after assembly.
[0016] The rotor blade mounting base provides support and fixation for the disc frame through the base frame. Both the disc frame and the base frame are fixed to the shaft sleeve of the shaft. The rotor shaft connected with the shaft sleeve can operate stably with the bearing during the operation of the fan, maintaining the normal generation of wind power. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the mounting base of this utility model;
[0018] Figure 2 This is a side view of the mounting base of this utility model.
[0019] Figure 3 This is a front view structural diagram of the blade mounting disc of this utility model;
[0020] Figure 4 This is a front view schematic diagram of the mounting slot in the blade mounting plate of this utility model;
[0021] Figure 5 This is a three-dimensional structural diagram of the blade seat of this utility model;
[0022] Figure 6 This is a side view of the internal structure of the mounting slot in the mounting tray of this utility model.
[0023] In the diagram: 1. Mounting base; 101. Base frame; 102. Shaft sleeve; 103. Rotor shaft; 104. Bearing; 2. Blade mounting plate; 201. Plate frame; 202. Mounting slot; 203. Plastic clip; 204. Side spring; 205. Blade seat; 206. Fan blade; 207. Inner groove; 208. Positioning hole; 209. Locking bolt; 210. Paddle; 211. Telescopic spring; 212. Telescopic slide. Detailed Implementation
[0024] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.
[0025] It should also be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.
[0026] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.
[0027] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".
[0028] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.
[0029] This utility model provides, for example Figure 1-4 The lightweight aluminum alloy composite fan rotor blade mounting base shown includes a mounting base 1, a blade mounting plate 2 fixed on one side of the mounting base 1, the mounting base 1 includes a base frame 101, a shaft sleeve 102 fixed on the axis of the base frame 101, a rotor shaft 103 fixed on the axis of the shaft sleeve 102, and a bearing 104 sleeved on one end of the rotor shaft 103.
[0030] To ensure the stability of this rotor blade mount during use in lightweight fans, such as Figure 1-2 As shown, the rotor blade mounting base can provide mounting and fixing for the disc frame 201 through the base frame 101. Both the disc frame 201 and the base frame 101 are fixed to the shaft sleeve 102 of the shaft. The rotor shaft 103 connected with the shaft sleeve 102 can cooperate with the bearing 104 to operate stably during the operation of the fan, maintaining the normal generation of wind power.
[0031] like Figure 2-6 As shown, the blade mounting plate 2 includes a plate frame 201. A mounting slot 202 is provided on one outer wall of the plate frame 201. Plastic buckles 203 are distributed on both sides of the inner wall of the mounting slot 202. A side spring 204 is connected to one end of the plastic buckle 203. A blade seat 205 is engaged around the inner wall of the mounting slot 202. A fan blade 206 is fixed on the top surface of the blade seat 205. An inner groove 207 is provided on both outer walls of the blade seat 205. A positioning hole 208 is provided inside one side of the blade seat 205. A locking bolt 209 passes through the positioning hole 208. A lever 210 is fixed on the top surface of one end of the locking bolt 209. A telescopic spring 211 is sleeved on one end of the locking bolt 209. The telescopic spring 211 is sleeved in the telescopic slide 212.
[0032] To facilitate the replacement, disassembly, and installation of the wind turbine blades 206, such as Figure 2-6 As shown, the rotor blade mounting base has annularly distributed mounting slots 202 on the surface of the plate frame 201. Each set of fan blades 206 can be engaged with the inside of the mounting slots 202 by an integrated blade seat 205. With the positioning hole 208 of the blade seat 205, the elastically extended locking bolt 209 can be inserted into the positioning hole 208, thereby keeping the blade seat 205 engaged and locked inside the mounting slot 202. When disassembling, simply slide the lever 210 along the telescopic slide 212 and slide out the connected locking bolt 209. The disassembly and installation process is convenient. Individual fan blades 206 can be disassembled and replaced individually, reducing material waste and facilitating quick cleaning and use.
[0033] When the blade seat 205 is engaged inside the mounting slot 202, the inner grooves 207 on both sides of the blade seat 205 will align with the plastic clips 203 on both sides. At this time, the side springs 204 connected to the plastic clips 203 can be used to elastically engage with both sides of the blade seat 205, further improving the structural stability after assembly.
[0034] In summary, when using this rotor blade mounting base, the user can first connect the rotor shaft 103 to the rotor of the fan. After installation and commissioning, when it is necessary to remove, inspect, or replace the fan blades 206 separately, the fan can be turned off and the fan cover can be opened. Then, the user can press the lever 210 so that the locking bolt 209 connected to the lever 210 slides into the interior along the telescopic slide 212. At this time, the locking of the positioning hole 208 in the blade seat 205 is released. The user can then directly pull out the blade seat 205 and the fan blades 206 by force, and can replace or maintain them as needed.
[0035] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in the embodiments of this disclosure is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.
Claims
1. A lightweight aluminum alloy composite fan rotor blade mounting base, comprising a mounting base (1), characterized in that, A blade mounting plate (2) is fixed to one side of the mounting base (1). The blade mounting plate (2) includes a plate frame (201). A mounting slot (202) is provided on one outer wall of the plate frame (201). Plastic clips (203) are distributed on both sides of the inner wall of the mounting slot (202). A side spring (204) is connected to one end of the plastic clips (203). A blade seat (205) is engaged around the inner wall of the mounting slot (202). The top of the blade seat (205) is... A fan blade (206) is fixed on the surface. The outer walls of both sides of the blade seat (205) are provided with inner grooves (207). A positioning hole (208) is provided inside one side of the blade seat (205). A locking bolt (209) is inserted inside the positioning hole (208). A lever (210) is fixed on the top surface of one end of the locking bolt (209). A telescopic spring (211) is sleeved on one end of the locking bolt (209). The telescopic spring (211) is sleeved in the telescopic slide (212).
2. The lightweight aluminum alloy composite fan rotor blade mounting base according to claim 1, characterized in that, The telescopic slide (212) and the mounting slot (202) are circumferentially opened along the surface of the tray (201), and the locking bolt (209) forms an elastic sliding structure with the telescopic slide (212) through the telescopic spring (211).
3. The lightweight aluminum alloy composite fan rotor blade mounting base according to claim 1, characterized in that, The blade seat (205) is fixed by being inserted into the locking bolt (209) through the positioning hole (208), and the blade seat (205) and the fan blade (206) are fixedly connected.
4. The lightweight aluminum alloy composite fan rotor blade mounting base according to claim 1, characterized in that, The plastic buckle (203) forms an elastic telescopic structure with the inner walls of both sides of the mounting slot (202) through the side spring (204), and the blade seat (205) is elastically fastened to both sides of the mounting slot (202) through the plastic buckles (203) on both sides.
5. A lightweight aluminum alloy composite fan rotor blade mounting base according to claim 1, characterized in that, The plate frame (201) is fixedly connected to the outer wall of one side of the mounting base (1), and the fan blades (206) are arranged in a ring along the surface of the plate frame (201).
6. A lightweight aluminum alloy composite fan rotor blade mounting base according to claim 1, characterized in that, The mounting base (1) includes a base frame (101), a shaft sleeve (102) is fixed to the axis of the base frame (101), a rotor shaft (103) is fixed to the axis of the shaft sleeve (102), and a bearing (104) is sleeved on one end of the rotor shaft (103).
7. A lightweight aluminum alloy composite fan rotor blade mounting base according to claim 6, characterized in that, The base frame (101) is rotatably coupled with the bearing (104) via the rotor shaft (103), and one side of the base frame (101) is fixedly connected to the blade mounting plate (2).