Bearing device for repairing large fan rotor

Abstract

A bearing device for repairing a large fan rotor belongs to the technical field of fan repairing related equipment and comprises a base, a base plate is mounted on the upper surface of the base, a moving seat is slidably mounted in the base, trapezoidal tables are fixedly mounted on the upper surfaces of the moving seat and the base plate, and mounting grooves are formed in the upper surfaces of the trapezoidal tables. A lifting wheel is rotatably mounted in the middle of an inner cavity of the mounting groove, side positioning wheels with adjustable positions are mounted on the two sides of the inner cavity of the mounting groove, the lifting wheel and the two side positioning wheels are used in cooperation to lift, position and support the end of the large fan rotor, and position adjusting devices used for adjusting the positions of the side positioning wheels are mounted on the inner sides of the trapezoidal tables. According to the large-scale fan rotor overturning device, the bearing requirements of the ends of large-scale fan rotors with different outer diameter specifications can be met, the overturning action of the large-scale fan rotors can be easily achieved, convenience is provided for adjustment work of rotor repairing faces, and the efficiency of repairing operation is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of fan repair related equipment, and specifically relates to a bearing device for large fan rotor repair. BACKGROUND

[0002] In the field of wind power generation, as a core component, large fan rotors are prone to problems such as wear, corrosion and fatigue cracks after long-term operation, directly affecting power generation efficiency and operational safety. Traditional repair methods require the rotor to be disassembled from the tower and transferred to a maintenance platform, but the rotor can weigh dozens of tons, and its size and weight pose great challenges to repair operations.

[0003] In the prior art, a patent with the publication number CN 216680992 U, entitled "Bearing device for large fan rotor repair", uses a semicircular support plate as a support structure, which can achieve basic bearing function. However, it has the following significant defects:

[0004] 1. Insufficient adaptability: the fixed radius of the semicircular support plate is only suitable for rotors of a specific outer diameter. When different models or sizes of rotors need to be repaired, the support components need to be frequently replaced, which is cumbersome and costly.

[0005] 2. Difficult to flip and adjust: during the repair process, the rotor needs to be frequently flipped to expose different repair surfaces. The semicircular support plate is in rigid contact with the surface of the rotor, resulting in high friction resistance, making the adjustment time-consuming and laborious, and easily causing secondary damage.

[0006] Therefore, another bearing device for large fan rotor repair is provided to solve the above technical problems. INVENTION CONTENTS

[0007] In view of the above-mentioned defects of the prior art, the purpose of the utility model is to provide a bearing device for large fan rotor repair, which solves the problems of insufficient adaptability and difficulty in flipping and adjusting during the repair process of the fan rotor. The specific technical scheme is as follows:

[0008] A bearing device for large fan rotor repair, comprising a base, a base plate is fixedly installed on the upper surface of the base, a moving seat is slidingly installed in the base, a trapezoidal table is fixedly installed on the upper surface of the moving seat and the base plate, an installation slot is formed in the upper surface of the trapezoidal table, a lifting wheel is rotatably installed in the inner cavity of the installation slot, side positioning wheels with adjustable positions are installed on both sides of the inner cavity of the installation slot, the lifting wheel and the two side positioning wheels are used in cooperation to lift and position support the end of the large fan rotor, a position adjusting device for adjusting the position of the side positioning wheel is installed on the inner side of the trapezoidal table, and a driving device for driving the lifting wheel to rotate is installed on the inner side of the left trapezoidal table.

[0009] The two U-shaped sliding seats equipped with side positioning wheels are driven by the position adjusting device to adjust the distance, thereby adapting to the bearing requirements of the end part of the large fan rotor of different outer diameter specifications, and effectively solving the limitations of the existing bearing device in universality.

[0010] The four limiting sliding grooves are arranged in the installation groove, and the left and right surfaces of the U-shaped sliding seat are fixedly installed with an adapter column A.

[0011] The position adjusting device comprises a hydraulic telescopic rod, the left hydraulic telescopic rod is fixedly installed on the upper surface of the pad, the right hydraulic telescopic rod is fixedly installed on the upper surface of the moving seat, the upper surface of the hydraulic telescopic rod is fixedly installed with a fixed plate, the left and right surfaces of the fixed plate are fixedly installed with two adapter columns B, the outer surface of the adapter column B is rotatably installed with a linkage rod, and the other end of the linkage rod is rotatably connected with the corresponding adapter column A.

[0012] The rotating shaft rod is rotatably installed in the installation groove, and the rotating shaft rod is fixedly connected between the lifting wheel.

[0013] The driving device comprises a stepping motor fixedly installed on the upper surface of the pad and two chain wheels, the two chain wheels are fixedly sleeved on the output shaft of the stepping motor and the shaft section of the rotating shaft rod respectively, a transmission chain is installed between the two chain wheels, and the transmission chain is in a taut state.

[0014] The load-bearing tire is rotatably installed on the lower surface of the front end and the rear end of the moving seat.

[0015] Compared with the prior art, the bearing device for repairing a large fan rotor has the beneficial effects that:

[0016] The position adjusting device drives the two U-shaped sliding seats equipped with side positioning wheels to adjust the distance, thereby adapting to the bearing requirements of the end part of the large fan rotor of different outer diameter specifications, effectively solving the limitations of the existing bearing device in universality. In addition, the lifting wheel and the side positioning wheel cooperate to realize stable bearing and support of the end part of the large fan rotor, significantly reducing the frictional resistance in the rotor overturning process, not only reducing the external force required for overturning operation and improving the labor-saving degree of operation, but also avoiding the risk of secondary damage to the rotor. At the same time, the driving device provided by the utility model can easily realize the overturning action of the large fan rotor through the linkage cooperation with the lifting wheel, providing convenience for the adjustment work of the rotor repair surface and effectively improving the efficiency of the repair operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0018] Figure 2This is a top view of the structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the trapezoidal platform structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the position adjustment device of this utility model.

[0021] Figure 5 This is a schematic diagram of the side positioning wheel structure of this utility model.

[0022] Figure 6 This is a schematic diagram of the drive device structure of this utility model.

[0023] Figure 7 This is a schematic diagram of the structure of this utility model in use.

[0024] Figures 1-7 The components include: 1. Base; 11. Pad; 12. Movable seat; 121. Load-bearing tire; 2. Threaded rod; 21. Precision adjusting motor; 3. Trapezoidal platform; 31. Mounting groove; 311. Limiting slide groove; 4. Rotating shaft rod; 41. Lifting wheel; 5. U-shaped slide; 51. Side positioning wheel; 52. Adapter column A; 6. Position adjusting device; 61. Hydraulic telescopic rod; 62. Fixing plate; 63. Adapter column B; 64. Linkage rod; 7. Drive device; 71. Stepper motor; 72. Transmission chain; 73. Sprocket. 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] In this embodiment, front, back, left, right, top, and bottom are... Figure 1 Describe the reference plane. See [link / reference] Figures 1-7 This utility model provides a technical solution:

[0027] The utility model provides a kind of bearing device for large fan rotor repair, including base 1, the upper surface left side welding installation of base 1 is batten 11, slidingly installed with mobile seat 12 in base 1, the front and rear ends lower surface of mobile seat 12 are all rotationally installed with load-bearing tire 121, load-bearing tire 121 can improve the load strength of mobile seat 12, the upper surface of mobile seat 12 and batten 11 are all welded with trapezoidal table 3, the upper surface of trapezoidal table 3 is all provided with installation groove 31, lifting wheel 41 is rotationally installed in the inner cavity middle part of installation groove 31 by pivot rod 4, the both ends of pivot rod 4 are rotationally connected between the inner rotor bearing of embedding fixed installation in the inner side wall of installation groove 31 and trapezoidal table 3, two U-shaped slides 5 are slidingly installed in the installation groove 31 of trapezoidal table 3, side positioning wheel 51 is rotationally installed in U-shaped slide 5, position adjusting device 6 for adjusting the position of side positioning wheel 51 is installed in the inner side of trapezoidal table 3, after the position of two side positioning wheels 51 is adjusted by the driving of position adjusting device 6, stable support to the end of large fan rotor is formed with lifting wheel 41, and it is convenient for large fan rotor to rotate and adjust position during supporting, driving device 7 for driving lifting wheel 41 to rotate is installed in the inner side of left trapezoidal table 3;

[0028] As Figure 4 Shown, adapter column A52 is fixedly installed on the left and right surfaces of U-shaped slide 5, as Figure 3 Shown, four limiting sliding grooves 311 are penetrated in installation groove 31, after U-shaped slide 5 is assembled into installation groove 31, adapter column A52 is transversely slidingly installed in corresponding limiting sliding groove 311.

[0029] Position adjusting device 6 includes hydraulic telescopic rod 61, and the bottom of two hydraulic telescopic rods 61 is fixedly installed on the upper surface of batten 11 and mobile seat 12 respectively, fixed plate 62 is fixedly installed on the upper surface of hydraulic telescopic rod 61, two adapter columns B63 are symmetrically welded on the left and right surfaces of fixed plate 62, linkage rod 64 is rotationally installed on the outer surface of adapter column B63, the other end of linkage rod 64 is rotationally connected between similar adapter column A52, to ensure driving strength, linkage rod 64 uses high-strength alloy structural steel (such as 42CrMo or 35CrMo) as linkage rod material, after such steel material is quenched and tempered, yield strength can reach more than 930MPa, tensile strength is more than 1080MPa, can bear high load transmitted by hydraulic telescopic rod 61, avoid deformation or fracture, prolong the service life of device.

[0030] When the position of the U-shaped slide 5 needs to be adjusted, the fixed plate 62 can be used to push and pull the four linkage rods 64 through the extension and retraction of the hydraulic telescopic rod 61, thereby driving the corresponding two U-shaped slides 5 to move synchronously inward or outward in the mounting groove 31, achieving the position adjustment effect. After the two U-shaped slides 5 move inward to adjust the position, the distance between the two side positioning wheels 51 can be reduced to adapt to the use of large fan rotors with smaller outer diameters. Conversely, after the two U-shaped slides 5 move outward to adjust the position, the distance between the two side positioning wheels 51 can be increased to adapt to the use of large fan rotors with larger outer diameters.

[0031] As shown in Figure 6 , the driving device 7 includes a stepping motor 71, a transmission chain 72, and two chain wheels 73. The stepping motor 71 is fixedly installed on the upper surface of the base plate 11 by bolts. The two chain wheels 73 are fixed on the output shaft of the stepping motor 71 and the shaft segment of the rotating shaft rod 4 by D-shaped keys, respectively. The transmission chain 72 is sleeved between the two chain wheels 73 and is in a taut state. After the stepping motor 71 is electrically connected to an external power source and an external controller, it can be controlled to rotate its output end by sending pulse signals to it through the external controller, thereby driving the rotating shaft rod 4 and the lifting wheels 41 to rotate through the cooperation of the transmission chain 72 and the chain wheels 73. After the two ends of the large fan rotor are placed on the two lifting wheels 41 and are positioned with the assistance of the two side positioning wheels 51, the large fan rotor can be driven to rotate by the rotation of the left lifting wheel 41, thereby completing the turning operation in the repair work and facilitating the adjustment of the repair surface of the large fan rotor during the actual repair operation.

[0032] In addition, in order to adjust the distance between the two trapezoidal tables 3 and make the bearing device as a whole adapt to the repair bearing work of fan rotors of different lengths, as shown in Figure 1 and Figure 2 , a threaded rod 2 is rotatably installed in the base 1. The threaded rod 2 is threadedly connected between the middle segment of the moving seat 12. A precision adjustment motor 21 is fixedly installed on the left surface of the base 1 through a motor base. The output end of the precision adjustment motor 21 is fixedly connected with the left end of the threaded rod 2 through a shaft coupling. The precision adjustment motor 21 is a 57 series forward and reverse stepping motor, which has multiple torque specifications to choose from and can meet different load requirements.

[0033] Taking 57HS76-4004A as an example, the step angle is 1.8°, and the static torque can reach 4.0 N·m, so that a relatively stable driving force can be provided; the precision adjusting motor 21 is electrically connected to an external power supply and an external controller for use; the external controller is a stepper motor controller, such as a DM542 stepper motor driver, which can be used in combination with the 57 series stepper motor described above. The driver uses an advanced control algorithm to achieve smooth operation of the motor, and has protection functions such as overcurrent, overvoltage, and undervoltage. The external controller (such as a PLC) sends pulse signals and direction signals to the DM542 driver; the frequency of the pulse signals determines the speed of the motor, and the number of pulses determines the number of steps of the motor, so as to realize accurate control of the precision adjusting motor 21.

[0034] When the precision adjusting motor 21 is precisely reversed by the external controller, it can drive the threaded rod 2 to rotate, thereby accurately driving the moving seat 12 to move left and right to adjust the position, so as to adjust the distance between the two trapezoidal tables 3 to adapt to the bearing use of the fan rotor with different lengths.

[0035] Working principle: in use, according to the length of the large fan rotor, the precision adjusting motor 21 and the threaded rod 2 are used to drive the moving seat 12 to move left or right to adjust the distance between the two trapezoidal tables 3; when the bearing distance is adjusted to the appropriate position, the two ends of the large fan rotor to be repaired are respectively hung above the lifting wheels 41 on the two sides by means of a crane lifting tool; then the hydraulic telescopic rods 61 at the corresponding positions are retracted, the two U-shaped slides 5 on the two sides are pulled inward by the fixed plates 62 in cooperation with the four linkage rods 64, so that the two side positioning wheels 51 clamp and position the placed ends of the large fan rotor from both sides; after positioning, the repair work can be carried out; during the repair process, the left rotating shaft rod 4 and the lifting wheel 41 can be driven to rotate by the cooperation of the stepper motor 71, the transmission chain 72 and the sprocket 73, and the large fan rotor can be flipped and adjusted to repair the surface by the driving of the left lifting wheel 41. Compared with the prior art, the utility model can adapt to the bearing use of large fan rotors with different outer diameters, and can flip and adjust the repair surface of the large fan rotor by the cooperation of the driving device 7 and the lifting wheel 41, thereby solving the problem of difficult flipping and adjusting of the repair surface during the repair process.

Claims

1. A bearing device for repairing a large fan rotor, comprising a base (1), characterized in that, The upper surface of the base (1) is fixedly installed with a base plate (11), the base (1) is slidably installed with a moving seat (12), the upper surfaces of the moving seat (12) and the base plate (11) are fixedly installed with trapezoidal tables (3), the upper surfaces of the trapezoidal tables (3) are all provided with installation grooves (31), the inner cavities of the installation grooves (31) are rotatably installed with lifting wheels (41), the two sides of the inner cavities of the installation grooves (31) are both installed with side positioning wheels (51) with adjustable positions, the lifting wheels (41) are used in cooperation with the two side positioning wheels (51) to lift and position the end part of a large fan rotor, the inner sides of the trapezoidal tables (3) are both installed with position adjusting devices (6) for adjusting the positions of the side positioning wheels (51), and the inner sides of the trapezoidal tables (3) on the left are installed with driving devices (7) for driving the rotation of the lifting wheels (41).

2. A bearing device for repairing a large fan rotor according to claim 1, wherein The installation grooves (31) are all slidably installed with two U-shaped sliding seats (5), and the side positioning wheels (51) are rotatably installed in the corresponding U-shaped sliding seats (5).

3. A bearing device for large fan rotor repair according to claim 2, characterized in that, Four limiting sliding grooves (311) are all provided in the installation grooves (31), and the left and right surfaces of the U-shaped sliding seat (5) are both fixedly installed with adapter columns A (52).

4. A bearing device for large fan rotor repair according to claim 3, characterized in that, The position adjusting devices (6) all comprise hydraulic telescopic rods (61), the left hydraulic telescopic rod (61) is fixedly installed on the upper surface of the base plate (11), the right hydraulic telescopic rod (61) is fixedly installed on the upper surface of the moving seat (12), the upper surfaces of the hydraulic telescopic rods (61) are both fixedly installed with fixed plates (62), the left and right surfaces of the fixed plate (62) are both fixedly installed with two adapter columns B (63), the outer surfaces of the adapter columns B (63) are all rotatably installed with linkage rods (64), and the other ends of the linkage rods (64) are all rotatably connected with the corresponding adapter columns A (52).

5. A bearing device for large fan rotor repair according to claim 1, wherein A rotating shaft rod (4) is rotatably installed in the installation groove (31), and the rotating shaft rod (4) is fixedly connected with the lifting wheel (41).

6. A bearing apparatus for large fan rotor repair according to claim 5, wherein The driving device (7) comprises a stepping motor (71) and two chain wheels (73) fixedly installed on the upper surface of the base plate (11), the two chain wheels (73) are respectively fixedly sleeved on the output shaft of the stepping motor (71) and the shaft segment of the rotating shaft rod (4), a transmission chain (72) is installed between the two chain wheels (73), and the transmission chain (72) is in a taut state.

7. A bearing device for large fan rotor repair according to claim 1, wherein The front and rear ends of the moving seat (12) are rotatably installed with load-bearing tires (121).

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