A foldable vertical axis wind turbine blade structure and its deployment and locking mechanism

Abstract

This utility model relates to the technical field of wind power generation equipment, and discloses a foldable vertical axis wind turbine blade structure and its deployment and locking mechanism. It includes a column, a fixed base fixedly connected to the outer wall of the column, and a first connecting arm fixedly connected to the outer wall of the fixed base. A second connecting arm is hinged to the end of the first connecting arm via a pin, and a blade is fixedly connected to the end of the second connecting arm. An deployment and locking mechanism is provided at the hinge point between the first and second connecting arms. This utility model employs a purely mechanical movable pin and spring self-locking structure, using a mechanical pin and hole-type locking mechanism. The structure is robust and can effectively resist the rotational torque caused by wind loads, avoiding the risk of accidental folding due to vibration during operation. This ensures operational stability and safety, significantly reduces the failure rate and maintenance costs, and allows for easy deployment and locking or folding locking by a single person.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation equipment technology, and in particular to a foldable vertical axis wind turbine blade structure and its deployment and locking mechanism. Background Technology

[0002] Vertical axis wind turbines have shown application potential in fields such as distributed power generation, field power supply, and urban public facilities due to their advantages such as not requiring wind direction, low noise, and simple structure.

[0003] However, traditional vertical axis wind turbine blades are mostly rigid and fixed structures, resulting in large space requirements during transportation, storage, and installation, which is extremely inconvenient, especially for small- to medium-sized or portable applications. While there are some ideas for foldable wind turbines in existing technologies, they mostly suffer from the following drawbacks:

[0004] The complex folding mechanism leads to high costs, reduced reliability, and difficulty in maintenance.

[0005] Unreliable locking: Under wind load, the folding mechanism is prone to shaking or accidental unlocking, affecting operational stability and safety;

[0006] The operation is cumbersome: the unfolding and folding process requires special tools or multiple people to work together, which makes it impossible to deploy quickly. To solve this problem, a foldable vertical axis wind turbine blade structure and its unfolding and locking mechanism are proposed. Utility Model Content

[0007] To overcome the above shortcomings, this utility model provides a foldable vertical axis wind turbine blade structure and its unfolding and locking mechanism, which aims to solve the problems in the prior art where the folding mechanism is prone to shaking or accidental unlocking under wind load, affecting operational stability and safety, and the unfolding and storage process requires special tools or multiple people to cooperate, making it impossible to achieve rapid deployment.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a foldable vertical axis wind turbine blade structure, including a column, a fixed seat fixedly connected to the outer wall of the column, a first connecting arm fixedly connected to the outer wall of the fixed seat, a second connecting arm hinged to the arm end of the first connecting arm via a pin, a blade fixedly connected to the arm end of the second connecting arm, and an unfolding locking mechanism provided at the hinge joint between the first connecting arm and the second connecting arm.

[0009] As a further description of the above technical solution: a reinforcing rod is provided between the second connecting arm and the blade, one end of the reinforcing rod is fixedly connected to the side wall of the blade, and the other end of the reinforcing rod is fixedly connected to the top of the second connecting arm.

[0010] An unfolding locking mechanism includes a fixed frame and a fixed sleeve, the top of the fixed frame being fixedly connected to the bottom right end of a second connecting arm, and the top of the fixed sleeve being fixedly connected to the bottom left end of a first connecting arm.

[0011] As a further description of the above technical solution: the inner wall of the fixed frame is slidably connected with a movable pin, the outer wall of the movable pin is fixedly connected with a retaining ring, and the outer wall of the movable pin is sleeved with a spring.

[0012] As a further description of the above technical solution: one end of the spring abuts against the inner wall of the fixed frame, and the other end of the spring abuts against the side wall of the retaining ring.

[0013] As a further description of the above technical solution: the left end of the movable pin is fixedly connected to a pull ring, the outer wall of the fixed sleeve is provided with a locking hole, and the right end of the movable pin is inserted into the inner wall of the locking hole.

[0014] As a further description of the above technical solution: the outer wall of the fixed sleeve is provided with a first positioning hole, and the outer wall of the fixed sleeve is provided with a second positioning hole.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, by adopting a purely mechanical movable pin and spring self-locking structure, and using mechanical pin and hole locking, the structure is robust and can effectively resist the rotational torque brought by wind load, avoiding the risk of accidental folding due to vibration during operation, ensuring the stability and safety of operation, and significantly reducing the failure rate and maintenance costs.

[0017] 2. In this utility model, the locking hole and two sets of positioning holes on the fixed sleeve make it easy for a single person to complete the unfolding and locking or folding and locking by hand, reducing transportation and storage space, and making it suitable for wind turbine installation and maintenance in complex terrain. Attached Figure Description

[0018] Figure 1 This is a front view of a foldable vertical axis windmill blade structure and its unfolding and locking mechanism proposed in this utility model.

[0019] Figure 2 A schematic diagram of the fixing frame structure of a foldable vertical axis wind turbine blade structure and its unfolding locking mechanism proposed in this utility model.

[0020] Figure 3 This is a schematic cross-sectional view of the fixing frame structure of a foldable vertical axis wind turbine blade structure and its unfolding locking mechanism proposed in this utility model.

[0021] Figure 4This is a schematic diagram of the second connecting arm structure of a foldable vertical axis windmill blade structure and its deployment locking mechanism proposed in this utility model.

[0022] Figure 5 This is a schematic diagram of the first connecting arm structure of a foldable vertical axis windmill blade structure and its unfolding and locking mechanism proposed in this utility model.

[0023] Legend:

[0024] 1. Column; 2. Fixing base; 3. First connecting arm; 4. Second connecting arm; 5. Blade; 601. Fixing frame; 602. Movable pin; 603. Retaining ring; 604. Spring; 605. Pull ring; 606. Fixing sleeve; 607. Locking hole; 7. Reinforcing rod; 8. First positioning hole; 9. Second positioning hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1:

[0027] Reference Figure 1 The present invention provides an embodiment of a foldable vertical axis wind turbine blade structure, comprising a column 1, a fixing seat 2 fixedly connected to the outer wall of the column 1, a first connecting arm 3 fixedly connected to the outer wall of the fixing seat 2, a second connecting arm 4 hinged to the arm end of the first connecting arm 3 by a pin, a blade 5 fixedly connected to the arm end of the second connecting arm 4, and an unfolding locking mechanism provided at the hinge joint between the first connecting arm 3 and the second connecting arm 4, so that the second connecting arm 4 can be folded toward the column 1 by means of the hinge joint between the first connecting arm 3 and the second connecting arm 4.

[0028] A reinforcing rod 7 is provided between the second connecting arm 4 and the blade 5. One end of the reinforcing rod 7 is fixedly connected to the side wall of the blade 5, and the other end of the reinforcing rod 7 is fixedly connected to the top of the second connecting arm 4. The reinforcement rod 7 can improve the stability between the blade 5 and the second connecting arm 4.

[0029] Example 2:

[0030] Reference Figure 2 - Figure 4Based on Embodiment 1, this utility model also provides an embodiment: a foldable vertical axis wind turbine blade structure deployment and locking mechanism, including a fixed frame 601 and a fixed sleeve 606. The top of the fixed frame 601 is fixedly connected to the bottom right end of the second connecting arm 4, and the top of the fixed sleeve 606 is fixedly connected to the bottom left end of the first connecting arm 3.

[0031] The inner wall of the fixed frame 601 is slidably connected to a movable pin 602, and the outer wall of the movable pin 602 is fixedly connected to a retaining ring 603. A spring 604 is sleeved on the outer wall of the movable pin 602. The force generated by the spring 604 can be transmitted to the movable pin 602 through the setting of the retaining ring 603. Under the action of the spring 604, the movable pin 602 will automatically spring into the locking hole 607 of the fixed sleeve 606 to achieve mechanical self-locking and prevent the boom from rotating under wind load, thereby keeping the blade 5 stably in the deployed working state.

[0032] One end of the spring 604 abuts against the inner wall of the fixed frame 601, and the other end of the spring 604 abuts against the side wall of the retaining ring 603. The left end of the movable pin 602 is fixedly connected to a pull ring 605. The pull ring 605 allows the operator to pull the movable pin 602 to disengage it from the locking hole 607. The outer wall of the fixed sleeve 606 has a locking hole 607, and the right end of the movable pin 602 is inserted into the inner wall of the locking hole 607.

[0033] Reference Figure 5 The outer wall of the fixed sleeve 606 is provided with a first positioning hole 8 and a second positioning hole 9. The first positioning hole 8 and the second positioning hole 9 are provided to facilitate the locking of the folded second connecting arm 4 by the movable pin 602, so as to avoid instability after folding. The locking hole 607 and the two sets of positioning holes on the fixed sleeve 606 make it easy for a single person to complete the unfolding and locking or folding and locking by hand, reducing transportation and storage space, and making it suitable for wind turbine installation and maintenance in complex terrain.

[0034] Working principle: When folding is required, the operator manually pulls the pull ring 605 at the end of the movable pin 602 outward, overcoming the force of the spring 604 to make the movable pin 602 disengage from the locking hole 607 on the fixed sleeve 606. At this time, the second connecting arm 4 can be rotated around the pin shaft to bring it closer to the central column 1, thus achieving folding. After folding, the movable pin 602 is inserted into the first positioning hole 8 under the action of the spring 604 to position the folded second connecting arm 4. When the folded second connecting arm 4 needs to be unfolded, the operator can pull the pull ring 605 to drive the movable pin 602 out of the first positioning hole 8 and rotate the second connecting arm 4 around the pin shaft so that the second connecting arm 4 and the first connecting arm 3 are in a straight line. At this time, the movable pin 602 is inserted into the locking hole 607 under the action of the spring 604 to achieve mechanical self-locking, preventing the arm from rotating under wind load, thereby keeping the blade 5 stably in the unfolded working state.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A collapsible vertical axis wind turbine blade structure comprising a mast (1) characterised in that: The outer wall of the column (1) is fixedly connected to a fixing seat (2), the outer wall of the fixing seat (2) is fixedly connected to a first connecting arm (3), the arm end of the first connecting arm (3) is hinged to a second connecting arm (4) by a pin, the arm end of the second connecting arm (4) is fixedly connected to a blade (5), and an unfolding locking mechanism is provided at the hinge of the first connecting arm (3) and the second connecting arm (4).

2. A collapsible vertical axis wind turbine blade structure according to claim 1, characterised in that: A reinforcing rod (7) is provided between the second connecting arm (4) and the blade (5). One end of the reinforcing rod (7) is fixedly connected to the side wall of the blade (5), and the other end of the reinforcing rod (7) is fixedly connected to the top of the second connecting arm (4).

3. A deployment locking mechanism applied to the foldable vertical axis wind turbine blade structure of any one of claims 1-2, characterized in that, It includes a fixed frame (601) and a fixed sleeve (606), the top of the fixed frame (601) is fixedly connected to the bottom right end of the second connecting arm (4), and the top of the fixed sleeve (606) is fixedly connected to the bottom left end of the first connecting arm (3).

4. A deployment locking mechanism according to claim 3, wherein: The inner wall of the fixed frame (601) is slidably connected to a movable pin (602), the outer wall of the movable pin (602) is fixedly connected to a retaining ring (603), and a spring (604) is sleeved on the outer wall of the movable pin (602).

5. A deployment locking mechanism according to claim 4, wherein: One end of the spring (604) abuts against the inner wall of the fixed frame (601), and the other end of the spring (604) abuts against the side wall of the retaining ring (603).

6. A deployment locking mechanism according to claim 5, wherein: The left end of the movable pin (602) is fixedly connected to a pull ring (605), and the outer wall of the fixed sleeve (606) is provided with a locking hole (607). The right end of the movable pin (602) is inserted into the inner wall of the locking hole (607).

7. A deployment locking mechanism according to claim 6, wherein: The outer wall of the fixed sleeve (606) is provided with a first positioning hole (8) and a second positioning hole (9).

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