Fan impeller welding tool

Abstract

The utility model provides a fan impeller welding tool, which relates to the technical field of impeller welding and comprises a fixed bottom plate, four corners of the bottom of the fixed bottom plate are fixedly connected with supporting legs, one side of the top of the fixed bottom plate is fixedly provided with a control terminal, and the bottom of the fixed bottom plate is provided with a rotating mechanism. According to the utility model, the hub is sleeved on the surface of the positioning column, the six impeller blades are respectively and correspondingly placed in the six impeller blade placing grooves, one end of each impeller blade is attached to one end of the inner cavity of each impeller blade placing groove, and the other end of each impeller blade is attached to the surface of the hub; one hand gently presses the middle of the welded impeller blade for fixing, the other hand holds the welding device for welding, after the impeller blade close to a worker is welded, the control terminal is operated, the impeller blade which is not welded is rotated to the side close to the worker, and remaining welding work continues to be completed.

Description

Technical Field

[0001] This utility model relates to the field of impeller welding technology, and in particular to a welding fixture for a wind turbine impeller. Background Technology

[0002] The impeller is an important component of a wind turbine, consisting of a hub and blades. There are several blades, which are evenly distributed around the hub. To ensure the stability of the connection between the blades and the hub, the blades are usually welded to the hub.

[0003] In the existing technology, when welding wind turbine impellers in some small factories, workers need to manually place the blades onto the surface of the hub. During welding, the hub and impeller blades are prone to movement, affecting the welding quality. On the other hand, when welding the impeller blades in a circumferential distribution on the hub surface, workers need to manually control the welding precision, which is quite inconvenient. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a welding fixture for a wind turbine impeller, comprising: a fixed base plate, with legs fixedly connected to the four corners of the bottom of the fixed base plate, a control terminal fixedly installed on one side of the top of the fixed base plate, a rotating mechanism provided at the bottom of the fixed base plate, an L-shaped connecting plate fixedly connected to the other side of the top of the fixed base plate, a lighting lamp fixedly installed at the bottom of the top of the L-shaped connecting plate, an impeller blade fixing mechanism provided at the bottom of the top of the L-shaped connecting plate, and a hub fixing mechanism provided at the top of the rotating mechanism.

[0006] Furthermore, the rotating mechanism includes a motor, which is fixedly connected to the center of the bottom of the fixed base plate. The output end of the motor passes through the surface of the fixed base plate via a bearing and is fixedly connected to an extension rod. A circular support plate is fixedly connected to the top end of the extension rod.

[0007] Furthermore, the impeller blade fixing mechanism includes two electric telescopic rods, the output ends of the two electric telescopic rods are fixedly connected to connecting plates, and the bottom of the two connecting plates are fixedly connected to fixing plates.

[0008] Furthermore, an annular fixing plate is embedded in the top of the fixing plate through a bearing, and six impeller blade placement slots are opened around the top of the annular fixing plate. The surface of the circular support plate is in contact with the inner wall of the annular fixing plate.

[0009] Furthermore, the hub fixing mechanism includes a positioning column, which is fixedly connected to the center of the top of the circular support plate. The positioning column has a cavity inside, and movable blocks are movably embedded on both sides of the cavity.

[0010] Furthermore, both ends of the two movable blocks are fixedly connected with anti-slip soft rubber pads, and two springs are fixedly connected between the opposite sides of the two movable blocks.

[0011] Furthermore, a through groove is provided at the top of the cavity, and a control rod is fixedly connected to one end of the top of each of the two movable blocks. The other ends of the two control rods are respectively movably embedded in both sides of the through groove cavity.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, the hub is fitted onto the top surface of the positioning post. By pressing the tops of the two control rods inward by hand, the hub falls to the top of the circular support plate. When the tops of the two control rods are released, the spring returns to its original state, the two movable blocks move outward, and the surfaces of the two anti-slip soft rubber pads adhere to both sides of the inner surface of the hub. The six impeller blades are then placed inside the six impeller blade placement slots respectively. At this time, one end of the impeller blade is attached to one end of the inner cavity of the impeller blade placement slot, and the other end of the impeller blade is attached to the surface of the hub.

[0014] 2. In this utility model, one hand gently presses down on the middle of the impeller blade to fix it, while the other hand holds the welding device to weld. After welding the impeller blade closest to the worker, the operator operates the control terminal. The welded impeller blade is engaged inside the corresponding impeller blade placement slot, thereby driving the annular fixing plate to rotate and rotate the unwelded impeller blade to the side closest to the worker, and continue to complete the remaining welding work. Attached Figure Description

[0015] Figure 1 A three-dimensional structural schematic diagram of a fan impeller welding fixture provided by this utility model;

[0016] Figure 2 A side view of a welding fixture for a wind turbine impeller provided by this utility model;

[0017] Figure 3 A bottom view of a fan impeller welding fixture provided by this utility model;

[0018] Figure 4 Enlarged view of section A of a fan impeller welding fixture provided by this utility model;

[0019] Figure 5This is a schematic diagram of the internal fixing mechanism of a fan impeller welding fixture provided by this utility model.

[0020] Legend:

[0021] 1. Fixed base plate; 2. Support legs; 3. Control terminal; 4. Rotating mechanism; 401. Motor; 402. Extension rod; 403. Circular support plate; 5. L-shaped connecting plate; 6. Lighting lamp; 7. Impeller blade fixing mechanism; 701. Electric telescopic rod; 702. Connecting plate; 703. Fixing plate; 704. Annular fixing plate; 705. Impeller blade placement slot; 8. Hub fixing mechanism; 801. Positioning column; 802. Cavity; 803. Movable block; 804. Anti-slip soft rubber pad; 805. Spring; 806. Through groove; 807. Control rod. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-5 This utility model provides a technical solution: a welding fixture for a wind turbine impeller, comprising: a fixed base plate 1, with support legs 2 fixedly connected to the four corners of the bottom of the fixed base plate 1, a control terminal 3 fixedly installed on one side of the top of the fixed base plate 1, a rotating mechanism 4 provided at the bottom of the fixed base plate 1, an L-shaped connecting plate 5 fixedly connected to the other side of the top of the fixed base plate 1, a lighting lamp 6 fixedly installed at the bottom of the top of the L-shaped connecting plate 5, an impeller blade fixing mechanism 7 provided at the bottom of the top of the L-shaped connecting plate 5, and a hub fixing mechanism 8 provided at the top of the rotating mechanism 4.

[0024] Specifically: control terminal 3 is used to control motor 401 and electric telescopic rod 701; L-shaped connecting plate 5 is used to fix and install impeller blade fixing mechanism 7; lighting lamp 6 is used to provide lighting during welding operations; impeller blade fixing mechanism 7 is used to limit the placement of impeller blades; and hub fixing mechanism 8 is used to fix hub.

[0025] In one embodiment, the rotating mechanism 4 includes a motor 401, which is fixedly connected to the center of the bottom of the fixed base plate 1. The output end of the motor 401 passes through the surface of the fixed base plate 1 through a bearing and is fixedly connected to an extension rod 402. A circular support plate 403 is fixedly connected to the top end of the extension rod 402.

[0026] Specifically, such as Figure 3As shown: The motor 401 drives the extension rod 402 to rotate, which in turn drives the circular support plate 403 and the wheel hub fixing mechanism 8 to rotate. The circular support plate 403 is used to cooperate with the wheel hub fixing mechanism 8 to limit the wheel hub.

[0027] In one embodiment, the impeller blade fixing mechanism 7 includes two electric telescopic rods 701, the output ends of the two electric telescopic rods 701 are fixedly connected to connecting plates 702, and the bottoms of the two connecting plates 702 are fixedly connected to fixing plates 703.

[0028] Specifically, such as Figure 1 , 2 As shown: The electric telescopic rod 701 drives the connecting plate 702 to rise and fall through the extension and retraction of the output end, thereby driving the fixed plate 703 to rise and fall. When the output end of the electric telescopic rod 701 extends to the maximum extent, the bottom of the fixed plate 703 is flush with the top surface of the fixed base plate 1. When the output end of the electric telescopic rod 701 retracts to the maximum extent, the top of the circular support plate 403 is flush with the bottom of the inner cavity of the annular fixed plate 704.

[0029] In one embodiment, an annular fixing plate 704 is embedded and installed on the top of the fixing plate 703 through a bearing. The top of the annular fixing plate 704 is surrounded by six impeller blade placement slots 705, and the surface of the circular support plate 403 is in contact with the inner wall of the annular fixing plate 704.

[0030] Specifically, such as Figure 1 As shown: The impeller blade placement groove 705 is used to place the impeller blade. One end of the impeller blade is attached to one end of the inner cavity of the impeller blade placement groove 705, and the other end of the impeller blade is attached to the surface of the hub.

[0031] In one embodiment, the hub fixing mechanism 8 includes a positioning post 801, which is fixedly connected to the center of the top of the circular support plate 403. The positioning post 801 has a cavity 802 inside, and movable blocks 803 are movably embedded on both sides of the cavity 802.

[0032] Specifically, such as Figure 1 , 5 As shown: the positioning post 801 is used to install the wheel hub, the cavity 802 is used to install internal parts, and the movable block 803 is used to support the surface of the inner cavity of the wheel hub.

[0033] In one embodiment, anti-slip soft rubber pads 804 are fixedly connected to both ends of the two movable blocks 803, and two springs 805 are fixedly connected between the opposite sides of the two movable blocks 803.

[0034] Specifically, such as Figure 5As shown: The anti-slip soft rubber pad 804 is used to increase the tightness of the fit between one end of the movable block 803 and the inner surface of the wheel hub, so as to prevent the wheel hub from sliding during welding. When the spring 805 is in the contracted state, the diameter of the inner surface of the wheel hub is slightly larger than the distance between the surfaces of the two anti-slip soft rubber pads 804. When the spring 805 is in the restored state, the diameter of the inner surface of the wheel hub is slightly smaller than the distance between the surfaces of the two anti-slip soft rubber pads 804.

[0035] In one embodiment, a through groove 806 is provided through the top of the cavity 802, and a control rod 807 is fixedly connected to one end of the top of each of the two movable blocks 803. The other ends of the two control rods 807 are respectively inserted through and movably embedded on both sides of the cavity of the through groove 806.

[0036] Specifically, such as Figure 5 As shown: The wheel hub is placed on the top surface of the positioning post 801. The tops of the two control rods 807 are pressed inward by hand, the spring 805 contracts, the two movable blocks 803 move into the cavity 802, and the wheel hub falls to the top of the circular support plate 403. The tops of the two control rods 807 are released, the spring 805 returns to its original state, the two movable blocks 803 move outward, and the surfaces of the two anti-slip soft rubber pads 804 adhere to both sides of the inner surface of the wheel hub.

[0037] Working principle: The control terminal 3 is electrically connected to the motor 401, the lighting lamp 6, and the electric telescopic rod 701. This fan impeller welding device is used to weld six-bladed impeller fans of the same size. The impeller blade placement slots and the position and size of the hub are matched with the impeller and hub to be welded. When in use, the device is first connected to an external power supply, and the control terminal 3 is operated to turn on the lighting lamp 6 for illumination.

[0038] Then, the hub is placed on the top surface of the positioning post 801. The tops of the two control rods 807 are pressed inward by hand, the spring 805 contracts, the two movable blocks 803 move into the cavity 802, and the hub falls to the top of the circular support plate 403. The tops of the two control rods 807 are released, the spring 805 returns to its original state, the two movable blocks 803 move outward, and the surfaces of the two anti-slip soft rubber pads 804 adhere to both sides of the inner surface of the hub.

[0039] Then, the six impeller blades are placed inside the six impeller blade placement slots 705 respectively. At this time, one end of the impeller blade is in contact with one end of the inner cavity of the impeller blade placement slot 705, and the other end of the impeller blade is in contact with the surface of the hub.

[0040] This setup positions the hub and impeller blades precisely, preventing them from shifting during welding and affecting the welding quality.

[0041] During welding, the worker wears heat-resistant gloves, gently presses the middle of the impeller blade to be welded with one hand to fix it, and holds the welding device with the other hand to weld. After the impeller blade closest to the worker is welded, the operator operates the control terminal 3. The control terminal 3 controls the motor 401 to drive the extension rod 402 to rotate, thereby driving the circular support plate 403 and the positioning column 801 to rotate. At this time, the welded impeller blade is engaged inside the corresponding impeller blade placement groove 705, thereby driving the annular fixing plate 704 to rotate, rotating the unwelded impeller blade to the side closest to the worker, and continuing to complete the remaining welding work.

[0042] After the top welding is completed, operate the control terminal 3. The control terminal 3 controls the output end of the electric telescopic rod 701 to extend. The fixed plate 703 drives the annular fixed plate 704 to move downward. At this time, the hub and impeller are separated from the inside of the impeller blade placement groove 705. Press the top of the two control rods 807 inward by hand. The spring 805 contracts and the two movable blocks 803 move into the cavity 802. At the same time, the hub and impeller blades are pulled out upward. The two anti-slip soft rubber pads 804 are separated from the inside of the hub. Then release the top of the two control rods 807, remove the hub and impeller blades, take out the hub and impeller blades and flip them over. Finally, weld the reverse side.

[0043] This setup allows for rotational adjustment of the hub and impeller blades to be welded, increasing their stability during welding and making the welding process more convenient.

[0044] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A welding fixture for a wind turbine impeller, characterized in that, include: A fixed base plate (1) is provided, and four support legs (2) are fixedly connected to the bottom of the fixed base plate (1). A control terminal (3) is fixedly installed on one side of the top of the fixed base plate (1). A rotating mechanism (4) is provided at the bottom of the fixed base plate (1). An L-shaped connecting plate (5) is fixedly connected to the other side of the top of the fixed base plate (1). A lighting lamp (6) is fixedly installed at the bottom of the top of the L-shaped connecting plate (5). An impeller blade fixing mechanism (7) is provided at the bottom of the top of the L-shaped connecting plate (5). A hub fixing mechanism (8) is provided at the top of the rotating mechanism (4).

2. The welding fixture for a wind turbine impeller according to claim 1, characterized in that: The rotating mechanism (4) includes a motor (401), which is fixedly connected to the center of the bottom of the fixed base plate (1). The output end of the motor (401) passes through the surface of the fixed base plate (1) through a bearing and is fixedly connected to an extension rod (402). A circular support plate (403) is fixedly connected to the top end of the extension rod (402).

3. The welding fixture for a wind turbine impeller according to claim 2, characterized in that: The impeller blade fixing mechanism (7) includes two electric telescopic rods (701), the output ends of the two electric telescopic rods (701) are fixedly connected to a connecting plate (702), and the bottom of the two connecting plates (702) are fixedly connected to a fixing plate (703).

4. The welding fixture for a wind turbine impeller according to claim 3, characterized in that: The top of the fixing plate (703) is fitted with an annular fixing plate (704) through a bearing. The top of the annular fixing plate (704) is surrounded by six impeller blade placement slots (705). The surface of the circular support plate (403) is in contact with the inner wall of the annular fixing plate (704).

5. The welding fixture for a wind turbine impeller according to claim 1, characterized in that: The hub fixing mechanism (8) includes a positioning post (801), which is fixedly connected to the center of the top of the circular support plate (403). The positioning post (801) has a cavity (802) inside, and movable blocks (803) are movably embedded on both sides of the cavity (802).

6. The welding fixture for a wind turbine impeller according to claim 5, characterized in that: Both ends of the two movable blocks (803) are fixedly connected with anti-slip soft rubber pads (804), and two springs (805) are fixedly connected between the opposite sides of the two movable blocks (803).

7. The welding fixture for a wind turbine impeller according to claim 6, characterized in that: The top of the cavity (802) is provided with a through groove (806), and one end of the top of each of the two movable blocks (803) is fixedly connected with a control rod (807). The other ends of the two control rods (807) are respectively inserted through and movably embedded on both sides of the cavity of the through groove (806).

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