Fixing device for dynamic balance test of fan

Abstract

The utility model relates to the technical field of fan testing, in particular to a fixing device for dynamic balance testing of a fan. A fixing device for a fan dynamic balance test comprises a support which is fixedly installed on a test bench, and the support is in an L shape. A positioning plate is fixed to the rear side of the support, and a gap is formed between the positioning plate and the support. A pressing cylinder is installed at the top end of the positioning plate, and a pressing block is fixed to the tail end of a telescopic rod of the pressing cylinder. According to the fixing device for the dynamic balance test of the fan, the fan needing to be tested is clamped through the support and the pressing air cylinder used in cooperation with the support, and auxiliary support is provided for the dynamic balance test.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine testing technology, and in particular to a fixed device for wind turbine dynamic balancing testing. Background Technology

[0002] The core purpose of wind turbine dynamic balancing testing is to ensure the stability and safety of wind turbine operation by correcting the rotor mass distribution. Specific objectives and functions are as follows:

[0003] Reduce vibration and noise;

[0004] By eliminating the centrifugal force caused by uneven rotor mass distribution, abnormal vibration and noise during equipment operation are reduced.

[0005] Extend equipment lifespan;

[0006] A balanced rotor can significantly reduce wear on key components such as bearings and seals, delay equipment aging, and extend overall lifespan.

[0007] Improve operational efficiency;

[0008] In a balanced state, the mechanical losses of the wind turbine are reduced, energy consumption is lowered, and operating efficiency is improved, which helps to save energy costs.

[0009] Currently, there is no suitable testing and fixing mechanism, which makes wind turbine balancing testing difficult and inefficient.

[0010] In view of the above-mentioned shortcomings, the designer has actively researched and innovated in order to create a fixed device for wind-powered dynamic balancing testing, which will have greater industrial application value. Utility Model Content

[0011] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a fixed device for wind-powered dynamic balancing testing.

[0012] This utility model relates to a fixing device for wind turbine balancing testing, including a support fixedly installed on a test bench, the support being L-shaped. A positioning plate is fixed to the rear side of the support, with a gap between the positioning plate and the support.

[0013] A clamping cylinder is installed at the top of the positioning plate, and a pressure block is fixed to the end of the telescopic rod of the clamping cylinder. This fixing device for wind turbine dynamic balancing test clamps the wind turbine to be tested through the support and the clamping cylinder used in conjunction, providing auxiliary support for the dynamic balancing test.

[0014] Furthermore, the top of the support is open, with a top block one in the middle of the opening, and a top block two and a top block three on either side of the opening.

[0015] The opening at the top of the support is used for the insertion and placement of the fan tail end, the top block one in the middle is used to support the lower end of the fan, and the top blocks two and three on both sides are used to support the two sides of the fan.

[0016] Furthermore, the top block one has the lowest height, and the top block three has the highest height.

[0017] The first top block is the lowest, and the third top block is the highest, so that the three top blocks form a support structure similar to an arc, which is convenient for supporting the fan.

[0018] Furthermore, the positioning plate has a through groove in the middle, and the lower end of the through groove is arc-shaped.

[0019] The slot on the positioning plate is used to engage the tail end of the fan.

[0020] Furthermore, the positioning plate and the clamping cylinder are fixedly connected by an adapter block.

[0021] The adapter block provides a mounting adapter structure for the clamping cylinder, facilitating installation.

[0022] Furthermore, there is a downward-extending pressure head below the pressure block.

[0023] The pressure head below the pressure block is used to contact the upper casing of the blower.

[0024] Furthermore, the pressure head and the top block are located on the same axis.

[0025] The pressure head and the top block are located on the same axis, and the fan structure is stable after compression.

[0026] Furthermore, there are two long, waist-shaped grooves at the bottom of the support.

[0027] The waist-shaped groove at the bottom of the support is used with locking bolts and nuts, and the installation position is adjustable.

[0028] By means of the above-described solution, the present invention has at least the following advantages:

[0029] 1. Stable clamping and precise positioning;

[0030] L-shaped support and top block support structure: The open design of the support, combined with the three top blocks with stepped height difference, forms a semi-circular support surface, which is adapted to the curved surface of the fan tail, ensuring stable alignment of the fan axis and reducing offset errors during testing.

[0031] The pressure head and the top block are coaxial: the pressure head at the end of the pressing cylinder and the bottom top block are on the same axis, so that the force is evenly distributed when pressing, avoiding vibration interference caused by uneven load.

[0032] 2. High efficiency and adaptability, and flexible adjustment;

[0033] Adjustable waist-shaped groove design: The long waist-shaped groove at the bottom of the support allows the installation position to be adjusted by bolts, adapting to different sizes of test benches or fan models, thus improving the versatility of the device.

[0034] Stepped top block height difference: The stepped layout of top block one and top block three can be adapted to the tail of fans of different diameters, simplifying the changeover operation.

[0035] 3. Ease of operation and safety;

[0036] Pneumatic clamping mechanism: The clamping cylinder drives the clamping block to quickly clamp / release the blower, which is more efficient than manual locking and the pressure is controllable, avoiding overpressure damage to the equipment.

[0037] Through-slot guide positioning: The arc-shaped through-slot in the middle of the positioning plate guides the tail of the fan to be precisely inserted, and the pressing action achieves "positioning with one placement", reducing human operation error.

[0038] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show a certain embodiment of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the structure of this utility model;

[0041] Figure 2 This is the front view of this utility model;

[0042] Figure 3 This is a diagram showing the usage state of this utility model;

[0043] In the diagram: 1. Support, 2. Positioning plate, 3. Clamping cylinder, 4. Clamping block, 5. Top block one, 6. Top block two, 7. Top block three, 8. Through groove, 9. Adapter block, 10. Clamping head. Detailed Implementation

[0044] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0045] See Figure 1 and Figure 2The support 1 of this wind turbine balancing test fixing device is made of metal. Its lower end is fixed to the test bench with a flat surface. The vertical surface of its side wall is used to fix and install the positioning plate 2. The upper end of the positioning plate 2 has a clamping cylinder 3 for pressing the wind turbine. The clamping cylinder 3 drives the pressure block 4 to press it against the upper end of the wind turbine, thus fixing the wind turbine.

[0046] The top opening of the support 1 contains a top block 5, and top blocks 6 and 7 are formed on both sides of the opening. The three top blocks are used to support the bottom and sides of the fan.

[0047] The three top blocks have different heights. Top block 1 (5) is the shortest and is used to support the bottom of the fan. Top block 3 (7) is the tallest and is used to support the outside of the fan. Top block 2 (6) is used to support the other side of the fan. The three top blocks work together to support and restrict the bottom and sides of the fan.

[0048] The slot 8 of the positioning plate 2 is used to insert the fan tail, and the arc-shaped structure at the lower end is used to fit the fan tail, which plays a role in supporting and limiting the fan tail.

[0049] The adapter block 9 is used to connect the clamping cylinder 3 and the positioning plate 2, making it convenient to install the clamping cylinder 3.

[0050] The pressure head 10 below the pressure block 4 is made of soft material and can press the upper part of the fan after contacting the upper part of the fan.

[0051] The pressure head 10 and the top block 5 are located on the same axis. When the fan is pressed, the upper and lower forces are in the same direction, ensuring that the fan mechanism is stable after pressing.

[0052] The waist-shaped groove at the bottom of support 1 allows for adjustment of the installation position of the locking bolts and nuts, facilitating adjustments based on the size of the fan and testing requirements.

[0053] The working principle of this utility model is as follows:

[0054] See Figure 3 ,

[0055] Install the support: Fix support 1 to the test bench through the waist-shaped groove at the bottom, and tighten it with bolts and nuts to ensure the support is stable.

[0056] Place the fan: Insert the tail end of the fan into the through groove 8 of the positioning plate 2, so that the lower end and both sides of the fan are in contact with the top block 1 5, the top block 2 6 and the top block 3 7 respectively.

[0057] Pressing the blower: Start the pressing cylinder 3 to move the pressing block 4 and the pressing head 10 downwards, pressing the upper housing of the blower to ensure that the blower will not shake or shift during the test.

[0058] Adjusting the position: Based on the size of the fan and the testing requirements, adjust the position of the support through the waist-shaped groove at the bottom of support 1 to ensure that the fan remains stable during the test.

[0059] Testing: After the fan is securely fixed, a dynamic balancing test is performed. During the test, ensure that the fan does not move or shake in any way.

[0060] Test complete: After the test is completed, release the clamping cylinder 3, remove the blower, and the entire test process is complete.

[0061] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0062] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0063] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A fixing device for fan dynamic balance test, comprising a support (1) fixedly installed with a test bench, characterized in that: The support (1) is in the shape of "L", a positioning plate (2) is fixed to the back side of the support (1), a gap is formed between the support (1) and the positioning plate (2), a pressing cylinder (3) is installed at the top end of the positioning plate (2), and a pressing block (4) is fixed to the end of the telescopic rod of the pressing cylinder (3).

2. The fixing device for dynamic balancing test of a fan according to claim 1, characterized in that: The top end of the support (1) is in the shape of an opening, a top block one (5) is arranged in the middle of the opening, and a top block two (6) and a top block three (7) are arranged on the two sides of the opening.

3. The fixing device for dynamic balancing test of a fan according to claim 2, characterized in that: The top block one (5) is the lowest in height, and the top block three (7) is the highest in height.

4. The fixing device for dynamic balancing test of a fan according to claim 1, characterized in that: A through slot (8) is arranged in the middle of the positioning plate (2), and the lower end of the through slot (8) is in the shape of a circular arc.

5. The fixing device for dynamic balancing test of a fan according to claim 1, characterized in that: The positioning plate (2) and the pressing cylinder (3) are fixedly connected through a transfer block (9).

6. The fixing device for dynamic balancing test of a fan according to claim 1, characterized in that: The pressing block (4) is provided with a pressing head (10) extending downward.

7. The fixing device for dynamic balancing test of a fan according to claim 2 or 6, characterized in that: The pressing head (10) and the top block one (5) are arranged on the same axis.

8. The fixing device for dynamic balancing test of a fan according to claim 1, characterized in that: The bottom of the support (1) is provided with two waist-shaped grooves in the shape of long strips.

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