Counterweight structure for balancing fan blades and balancing process thereof

Abstract

The invention relates to the field of cooling fans, in particular to a balance weight structure for balancing fan blades and a balancing process of the balance weight structure. Comprising the following steps: carrying out dynamic balance detection on a fan blade center part, and determining an unbalance position; a balance weight adding device is fixedly arranged on the fan blade center component; the balance weight adder corresponds to the unbalance position of the fan blade center component, and balance weight cylinders are added in a balanced mode. The weight of the added counterweight adjusting steel ball is controlled in the counterweight cylinder so as to accurately adjust the dynamic balance weight; the device has the beneficial effects that the number, the position and the weight are accurately adjusted according to the detection condition, after the number and the position are determined, the balance range is further reduced, a proper amount of balance weight adjusting steel balls are taken out, then the weight is accurately controlled, and the device is more accurate compared with a traditional adding and precise reducing balance mode.

Description

Technical Field

[0001] The present invention relates to the field of heat dissipation fans, and more particularly to a counterweight structure for balancing fan blades and a balancing process thereof. Background Art

[0002] With the development of technology and the popularization of electronic products, the market demand for cooling fans is gradually increasing to avoid equipment running at too high a temperature and affecting normal operation; when the fan is working, the fan blades rotate continuously. Due to continuous vibration, the fan blades will become unbalanced, and the fan blades need to be re-calibrated and balanced to make the rotation of the blades stable, thereby increasing the service life of the fan; a fan blade with a dynamic balancing self-adjusting device similar to patent number CN201510390586.1 comprises: a blade body and a dynamic balancing self-adjusting device, the dynamic balancing self-adjusting device is arranged on the blade body, the dynamic balancing self-adjusting device comprises: an adjustment code and a vernier code, the adjustment code is located at the blade body away from the blade rotation At the position of the center of the rotating shaft, the vernier code is located at a position close to the center of the rotating shaft of the fan blade, and the adjustment code and the vernier code are both located on the total dividing line of the fan blade body, and the extension line passes through the center of the rotating shaft; the dynamic balancing self-adjusting device is arranged in the groove of the fan blade body; the dynamic balancing self-adjusting device is arranged in the groove of the fan blade body for active and tight connection; the vernier code and the adjustment code both have a locking structure; by arranging the dynamic balancing self-adjusting device in the fan blade, the fan blade becomes easy and convenient in the process of dynamic balancing adjustment, which saves manpower and material resources, speeds up the equipment maintenance time, reduces the probability of equipment accidents, and is safe and reliable; but the device cannot perform precise dynamic balancing adjustment on the fan blade structure that continues to be used. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art that it is impossible to accurately adjust the dynamic balance of the fan blade structure that is still in use.

[0004] To this end, the technical solution adopted is a counterweight structure for balancing fan blades and a balancing process thereof of the present invention, including a fan blade center component, a magnetic ring adding seat is fixed at the center of the fan blade center component, a magnetic ring is added and arranged in the magnetic ring adding seat, a plurality of fan blades are evenly fixed in the fan blade center component, and a balancing counterweight adder for balancing dynamic balance is arranged at the lower end of the fan blade center component.

[0005] Preferably, the lower end of the balancing weight adding device is provided with a plurality of balancing weight cylinders protruding from the lower end; the plurality of balancing weight cylinders are evenly arranged at the lower end of the balancing weight adding device;

[0006] Preferably, a plurality of arc-shaped slide grooves are evenly arranged at the lower end of the central component of the fan blade, and a plurality of elastic fixed hook claws are evenly and symmetrically fixed on the inner wall of the arc-shaped slide groove.

[0007] Preferably, a plurality of connecting threaded holes are evenly arranged at the lower end of the central component of the fan blade, and the central component of the fan blade is connected to the balancing weight adder through the plurality of connecting threaded holes.

[0008] Preferably, the balancing weight adder includes an adding frame, a connecting inner screw and an outer arc-shaped slide groove, the adding frame is connected to multiple connecting inner screws by threaded cooperation, the connecting inner screw is connected to the connecting threaded hole by threaded cooperation, and multiple outer arc-shaped slide grooves are evenly arranged throughout the adding frame.

[0009] Preferably, the outer arc-shaped slide groove is symmetrically connected to the arc-shaped slide groove at the lower end of the fan blade center component, and the aperture of the arc-shaped slide groove is larger than the aperture of the outer arc-shaped slide groove.

[0010] Preferably, a plurality of counterweight cylinders are slidably inserted into the communicating outer arc-shaped slide groove and the arc-shaped slide groove.

[0011] Preferably, the counterweight cylinder includes a cylindrical tube, an outer clamping seat and an outer clamping claw. The outer wall of the cylindrical tube is provided with two outer clamping seats, and the outer clamping claws are fixed in the outer clamping seats. The outer clamping seats are slidably inserted in the arc slide groove, and the cylindrical tube is slidably inserted in the outer arc slide groove.

[0012] Preferably, the outer hook claw is buckled into the elastic fixed hook claw.

[0013] Preferably, the counterweight cylinder also includes a closed end plate, an inner spring, a spring top plate, a counterweight adjustment steel ball and a closed threaded cover. The closed end plate is fixed to the upper end of the cylindrical tube, an inner spring is arranged between the closed end plate and the spring top plate, a plurality of counterweight adjustment steel balls are stacked at the lower end of the spring top plate, and the closed threaded cover is connected to the lower end of the cylindrical tube by threaded fitting.

[0014] A counterweight balancing process for balancing fan blades comprises the following steps:

[0015] S1: Perform dynamic balancing test on the central part of the fan blade to determine the imbalance position;

[0016] S2: Fix and add a balancing weight adder on the central part of the fan blade;

[0017] S3: The balancing weight adding device corresponds to the unbalanced position of the central part of the fan blade, and adds a balancing weight cylinder in a balanced manner;

[0018] S4: Control the weight of the added weight adjustment steel ball in the weight cylinder to accurately adjust the dynamic balance weight.

[0019] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures specifically pointed out in this application document.

[0020] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention in the first direction;

[0023] Figure 2 It is a schematic diagram of the overall structure of the present invention in the second direction;

[0024] Figure 3 It is a schematic diagram of the bottom structure of the central component of the fan blade of the present invention;

[0025] Figure 4 It is a structural schematic diagram of a balancing weight adding device of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the adding frame of the present invention;

[0027] Figure 6 The structure of the counterweight cylinder of the present invention is shown in FIG. Figure 1 ;

[0028] Figure 7 The structure of the counterweight cylinder of the present invention is shown in FIG. Figure 2 ;

[0029] Figure 8 It is a schematic diagram of the cross-sectional structure of the counterweight cylinder of the present invention.

[0030] In the figure: the fan blade center component 1; the magnetic ring adding seat 2; the fan blade 3; the balancing weight adding device 4; the arc slide 5; the elastic fixing hook claw 6; the connecting threaded hole 7; the adding frame 8; the connecting inner screw 9; the outer arc slide 10; the counterweight cylinder 11; the cylindrical tube 12; the closed end plate 13; the outer seat 14; the outer hook claw 15; the inner spring 16; the spring top plate 17; the counterweight adjustment steel ball 18; the closed threaded cover 19. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "middle", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0033] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. Specific implementation method one:

[0036] like Figure 1 and Figure 2 As shown, a counterweight structure for balancing fan blades and a balancing process thereof include a fan blade center component 1, a magnetic ring adding seat 2 is fixed at the center of the fan blade center component 1, a magnetic ring is added and arranged in the magnetic ring adding seat 2, a plurality of fan blades 3 are evenly fixed in the fan blade center component 1, and a balancing counterweight adder 4 for balancing dynamic balance is arranged at the lower end of the fan blade center component 1.

[0037] The working principle and beneficial effects of this embodiment are as follows: after disassembling the unbalanced blade center component 1, a dynamic balance test is performed, and after determining the unbalanced position, a balancing weight adder 4 is installed on the blade center component 1, and the position and weight of the weight on the balancing weight adder 4 are adjusted; thereby solving the problem of accurate dynamic balance adjustment of the blade structure that continues to be used;

[0038] A magnetic ring adding seat 2 is fixed at the center of the fan blade center component 1, and a magnetic ring is added inside the magnetic ring adding seat 2. A plurality of fan blades 3 are evenly fixed inside the fan blade center component 1 for blowing drive use. The lower end of the fan blade center component 1 is connected to a balancing weight adder 4 for dynamic balance through a threaded fitting. When correcting the dynamic balance, the balancing weight adder 4 selects the number, position and weight of the counterweight cylinders according to the actual detection data, thereby realizing the effectiveness of the counterweight balancing process. Specific implementation method 2:

[0040] like Figure 1 — Figure 8 As shown, a counterweight structure for balancing fan blades and its balancing process, the lower end of the balancing weight adder 4 is integrally protruded with a plurality of counterweight cylinders 11; the plurality of counterweight cylinders 11 are evenly arranged at the lower end of the balancing weight adder 4.

[0041] The working principle and beneficial effects of this embodiment are as follows: in order to solve the concentricity of the fan blade axis and the bearing when the fan is running, and at the same time solve the efficiency problem during production, the present application provides a method of adding a balancing weight adder 4 and a plurality of balancing weight cylinders 11 to the bottom of the fan blade for balancing the fan blade. The fan blade has a plurality of balancing weight cylinders 11 at the bottom to balance the fan blade. By arranging a plurality of balancing weight cylinders 11 with balancing weights at the bottom of the fan blade, the operation of the fan is more balanced. When correcting the dynamic balance, the corresponding balancing weight cylinders 11 of an adaptive height can be cut off using pliers and other devices to realize the de-weighting balancing process. According to the actual detection data, the number, height or shearing of the balancing weight cylinders 11 can be selected to realize the de-weighting balancing process. Compared with the traditional use of balancing mud to realize de-weighting balancing, it is more convenient and efficient. Specific implementation method three:

[0043] like Figure 1 — Figure 8 As shown, a counterweight structure for balancing fan blades and a balancing process thereof, wherein a plurality of arc grooves 5 are evenly arranged at the lower end of the fan blade center component 1, and a plurality of elastic fixed hook claws 6 are evenly and symmetrically fixed on the inner wall of the arc groove 5.

[0044] The working principle and beneficial effects of this embodiment are as follows: a plurality of elastic fixed hook claws 6 are evenly and symmetrically fixed on the inner wall of the arc slide groove 5, so as to facilitate the use of the sliding fixed position of the counterweight cylinder 11, and further facilitate adjustment after determining the balance position. Specific implementation method four:

[0046] like Figure 1 — Figure 8 As shown, a counterweight structure for balancing fan blades and a balancing process thereof are provided. The lower end of the fan blade center component 1 is evenly provided with a plurality of connecting threaded holes 7, and the fan blade center component 1 is connected to the balancing counterweight adder 4 through the plurality of connecting threaded holes 7.

[0047] The working principle and beneficial effects of this embodiment are as follows: the fan blade center component 1 is connected to multiple connecting threaded holes 7 by connecting the inner screw 9 threadedly to achieve the connection with the balancing weight additive 4, which is convenient for corresponding connection, addition and adjustment of the balancing weight additive 4, thereby balancing the whole. Specific implementation method five:

[0049] like Figure 1 — Figure 8 As shown, a counterweight structure for balancing fan blades and a balancing process thereof, the balancing weight adder 4 includes an adding frame 8, a connecting inner screw 9 and an outer arc-shaped slide groove 10, a plurality of connecting inner screws 9 are connected to the adding frame 8 by threaded cooperation, the connecting inner screw 9 is connected to the connecting threaded hole 7 by threaded cooperation, and a plurality of outer arc-shaped slide grooves 10 are evenly arranged throughout the adding frame 8.

[0050] The working principle and beneficial effects of this embodiment are as follows: a plurality of connecting inner screws 9 are connected to the adding frame 8 by threaded cooperation, and the connecting inner screws 9 are connected to the connecting threaded holes 7 by threaded cooperation, thereby realizing the connection and fixation of the balancing weight adder 4; a plurality of outer arc-shaped slide grooves 10 are evenly arranged throughout the adding frame 8, and the plurality of outer arc-shaped slide grooves 10 facilitate the sliding addition of the counterweight cylinder 11 for position-adjusted addition. Specific implementation method six:

[0052] like Figure 1 — Figure 8 As shown, a counterweight structure for balancing fan blades and its balancing process, the outer arc groove 10 is symmetrically connected to the arc groove 5 at the lower end of the fan blade center component 1, the aperture of the arc groove 5 is larger than the aperture of the outer arc groove 10; a plurality of counterweight cylinders 11 are slidably inserted into the connected outer arc groove 10 and the arc groove 5.

[0053] The working principle and beneficial effects of this embodiment are as follows: the outer arc groove 10 is symmetrically connected to the arc groove 5 at the lower end of the fan blade center component 1, which is convenient for determining the corresponding position after connecting the balancing weight adder 4, and is convenient for adjusting the unbalanced position. The aperture of the arc groove 5 is larger than the aperture of the outer arc groove 10, which is convenient for adding the sliding of the counterweight cylinder 11 and fixing the position, and adjusting and adding are performed on the basis of balance. Specific implementation method seven:

[0055] like Figure 1 — Figure 8 As shown, a counterweight structure for balancing fan blades and its balancing process, the counterweight cylinder 11 includes a cylindrical tube 12, an outer clamping seat 14 and an outer clamping claw 15, the outer wall of the cylindrical tube 12 is provided with two outer clamping seats 14, the outer clamping claw 15 is fixed in the outer clamping seat 14, the outer clamping seat 14 is slidably inserted in the arc groove 5, and the cylindrical tube 12 is slidably inserted in the outer arc groove 10.

[0056] The working principle and beneficial effects of this embodiment are as follows: after completing the connection of the balancing weight adder 4, it is necessary to adjust the unbalanced position, and add the counterweight cylinder 11 according to the different positions. The counterweight cylinder 11 is inserted into the arc slide groove 5 and the outer arc slide groove 10, and slides. After sliding to the specified position, the counterweight cylinder 11 is rotated to fix the counterweight cylinder 11 in the position of the arc slide groove 5. After determining the position, the counterweight cylinder 11 is added to the corresponding position so that it initially reaches a precise balance state, and then the counterweight cylinder 11 is adjusted to determine the dynamic balance effect. Specific implementation eight:

[0058] like Figure 1 — Figure 8 As shown, a counterweight structure for balancing fan blades and a balancing process thereof, wherein the outer hook claw 15 is snapped into the elastic fixed hook claw 6.

[0059] The working principle and beneficial effects of this embodiment are as follows: after reaching the designated position, the counterweight cylinder 11 is rotated, and the corresponding outer hook claw 15 is snapped into the elastic fixed hook claw 6 to complete the position fixation. Specific implementation method nine:

[0061] like Figure 1 — Figure 8 As shown, a counterweight structure for balancing fan blades and a balancing process thereof, the counterweight cylinder 11 also includes a closed end plate 13, an inner spring 16, a spring top plate 17, a counterweight adjustment steel ball 18 and a closed threaded cover 19, the closed end plate 13 is fixed to the upper end of the cylindrical tube 12, an inner spring 16 is arranged between the closed end plate 13 and the spring top plate 17, a plurality of counterweight adjustment steel balls 18 are stacked at the lower end of the spring top plate 17, and the closed threaded cover 19 is connected to the lower end of the cylindrical tube 12 by threaded fitting.

[0062] The working principle and beneficial effects of this embodiment are as follows: after the initial balance is met, the quantity, position and weight need to be accurately adjusted in combination with the detection conditions. After the quantity and position are determined, the balance range is further narrowed, and then the closed threaded cover 19 is rotated in the cylindrical tube 12 to take out an appropriate amount of counterweight adjustment steel balls 18, thereby achieving precise control of the weight. Compared with the traditional addition and subtraction balancing methods, the taken out counterweight adjustment steel balls 18 are squeezed by the inner spring 16 and the spring top plate 17 to prevent the generation of internal gaps that affect the balance of use. The number of counterweight adjustment steel balls 18 taken out from the different counterweight cylinders 11 is combined to complete the adaptive adjustment of the weight; thereby achieving the counterweight of the fan blade balance quickly and without damage. Specific implementation method ten:

[0064] like Figure 1 — Figure 8 As shown, a counterweight structure for balancing a fan blade and a balancing process thereof include the following steps:

[0065] S1: Perform dynamic balancing test on the central component 1 of the fan blade to determine the unbalanced position;

[0066] S2: Fix and add a balancing weight adder 4 on the central component 1 of the fan blade;

[0067] S3: The balancing weight adding device 4 corresponds to the unbalanced position of the central component 1 of the fan blade, and adds the balancing weight cylinder 11 in a balanced manner;

[0068] S4: Control the weight of the added counterweight adjustment steel ball 18 in the counterweight cylinder 11 to accurately adjust the dynamic balance weight.

[0069] The above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention also fall within the protection scope of the present invention.

Claims

1. A counterweight structure for balancing fan blades, characterized in that: The invention comprises a central fan blade component (1), a magnetic ring adding seat (2) is fixed at the center of the central fan blade component (1), a magnetic ring is added and arranged in the magnetic ring adding seat (2), a plurality of fan blades (3) are evenly fixed in the central fan blade component (1), and a balancing weight adding device (4) for dynamic balancing is arranged at the lower end of the central fan blade component (1).

2. A blade balancing counterweight structure according to claim 1, characterized in that: The lower end of the balancing weight adding device (4) is integrally protruded with a plurality of balancing weight cylinders (11); the plurality of balancing weight cylinders (11) are evenly arranged at the lower end of the balancing weight adding device (4).

3. A blade balancing counterweight structure according to claim 1, characterized in that: The lower end of the fan blade center component (1) is evenly provided with a plurality of arc grooves (5), and the inner wall of the arc groove (5) is evenly and symmetrically fixed with a plurality of elastic fixed hook claws (6); the lower end of the fan blade center component (1) is evenly provided with a plurality of connecting threaded holes (7), and the fan blade center component (1) is connected to the balancing weight adder (4) through the plurality of connecting threaded holes (7).

4. A blade balancing counterweight structure according to claim 1, characterized in that: The balancing weight adding device (4) comprises an adding frame (8), a connecting inner screw (9) and an outer arc-shaped slide groove (10); a plurality of connecting inner screws (9) are connected to the adding frame (8) by threaded fitting; the connecting inner screws (9) are connected to the connecting threaded hole (7) by threaded fitting; and a plurality of outer arc-shaped slide grooves (10) are evenly arranged throughout the adding frame (8).

5. A blade balancing counterweight structure according to claim 4, characterized in that: The outer arc-shaped slide groove (10) is symmetrically connected to the arc-shaped slide groove (5) at the lower end of the fan blade central component (1), and the aperture of the arc-shaped slide groove (5) is larger than the aperture of the outer arc-shaped slide groove (10).

6. A blade balancing counterweight structure according to claim 5, characterized in that: A plurality of counterweight cylinders (11) are slidably inserted into the communicating outer arc-shaped slide groove (10) and the arc-shaped slide groove (5).

7. A blade balancing counterweight structure according to claim 6, characterized in that: The counterweight cylinder (11) comprises a cylindrical tube (12), an outer clamping seat (14) and an outer clamping claw (15). The outer wall of the cylindrical tube (12) is provided with two outer clamping seats (14), and the outer clamping claw (15) is fixed inside the outer clamping seat (14). The outer clamping seat (14) is slidably inserted in the arc groove (5), and the cylindrical tube (12) is slidably inserted in the outer arc groove (10).

8. A blade balancing counterweight structure according to claim 7, characterized in that: The outer hook claw (15) is buckled in the elastic fixed hook claw (6).

9. A blade balancing counterweight structure according to claim 7, characterized in that: The counterweight cylinder (11) further comprises a closed end plate (13), an inner spring (16), a spring top plate (17), a counterweight adjustment steel ball (18) and a closed threaded cover (19); the closed end plate (13) is fixed to the upper end of the cylindrical tube (12); an inner spring (16) is arranged between the closed end plate (13) and the spring top plate (17); a plurality of counterweight adjustment steel balls (18) are stacked at the lower end of the spring top plate (17); and the closed threaded cover (19) is connected to the lower end of the cylindrical tube (12) by threaded engagement.

10. A blade balancing counterweight process, applicable to a blade balancing counterweight structure according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Perform dynamic balancing test on the central component (1) of the fan blade to determine the imbalance position; S2: Fixing and adding a balancing weight adding device (4) on the central component (1) of the fan blade; S3: The balancing weight adding device (4) corresponds to the unbalanced position of the central component (1) of the fan blade, and adds a balancing weight cylinder (11) in a balanced manner; S4: Control the weight of the added counterweight adjustment steel ball (18) in the counterweight cylinder (11) to accurately adjust the dynamic balance weight.

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