Tool for replacing wind power variable pitch motor bearing

Abstract

The utility model discloses a tool for replacing a wind power variable pitch motor bearing, which comprises a rack and cross beam plates integrally formed on the left inner wall and the right inner wall of the rack, a C-opening sliding frame is installed at the bottom ends of the two cross beam plates in the same Y-axis direction in a sliding mode, and a semicircular positioning seat is fixed at the bottom end of the C-opening sliding frame. Grooves are formed in the two semicircular positioning seats, a machine table used for bearing a bearing is installed in the machine frame, and the upper surface of the machine table makes contact with the lower surfaces of the semicircular positioning seats. Clamping of the bearing is completed through a simple mechanical structure of the gear motor and the connecting rod type gear, the design of the whole system is remarkably simplified, the gear motor controls movement of the sliding frame through the accurate transmission device, a complex pipeline and a control system in a hydraulic pneumatic system are avoided, and the reliability and maintainability of the structure are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing frock technical field, concretely is a frock for replacing wind power variable pitch motor bearing. BACKGROUND

[0002] Since the wind turbine is usually located in high altitude or harsh environment, the use of frock can effectively reduce the labor intensity of the operator, simplify the replacement steps, ensure the correct installation of the bearing, avoid equipment damage and safety hazards caused by improper operation, and the structural design of the frock usually includes support frame, centering and positioning system, hoisting and moving device, operation platform and special tool and other parts, the support frame provides sufficient strength and stability to support the heavy bearing assembly, the centering and positioning system ensures the accurate position of the bearing during installation to avoid vibration or friction caused by deviation, and the hydraulic or electric drive device can be used during operation, and the power is efficiently transmitted to the working parts through mechanical transmission principle to complete the pressing, disassembly and other operations of the bearing, but in the process of fixing the wind power variable pitch motor bearing and extracting the shaft body, multiple cylinders or hydraulic cylinders are needed to clamp and limit the bearing at different positions to make the shaft body can be pushed out or extracted by external force, although multiple cylinders or hydraulic cylinders can effectively complete the task of bearing fixing and limiting, but in actual operation, the force distribution between multiple cylinders may not be completely uniform, even if it is precisely designed, the precision and execution force of the cylinder and hydraulic cylinder may still have slight differences, which may cause some cylinders to work excessively, and even the force is unevenly distributed, which may cause additional damage to the bearing or motor assembly, the slight error may be amplified in the high-precision wind power variable pitch motor bearing replacement process, thereby affecting the stability and service life of the equipment, and the use of multiple cylinders or hydraulic cylinders also means that a precise control system and multiple pneumatic or hydraulic circuits are needed to coordinate the actions of each cylinder, as the complexity of the system increases, the difficulty of maintenance and maintenance also rises. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a frock for replacing wind power variable pitch motor bearing, two C mouth sliding frames that can slide towards each other are installed on the top of the rack, and the bottom end of the C mouth sliding frame is installed with a semicircular positioning seat for contacting the outer wall of the bearing to be fixed, the two semicircular positioning seats are close to each other until the bearing is clamped stably by the deceleration motor and connecting rod type gear pair pulling structure, so as to solve the problems in the above background technology.

[0004] In order to achieve the above object, the utility model provides the following technical scheme: a tool for replacing wind power variable pitch motor bearing, including frame and the frame left and right inner wall integrated beam plate, the bottom of two same Y axle direction beam plate sliding installation has C mouth sliding frame, and the bottom of C mouth sliding frame is fixed with semicircle positioning seat, the inside of two semicircle positioning seat is all provided with recess, the inside of frame is installed with the machine table for carrying bearing, and the upper surface of machine table and the lower surface of semicircle positioning seat are mutually contacted, the inner wall of one side of frame is provided with the connecting rod type gear pair pull structure for driving two C mouth sliding frame to move towards each other, and the outer wall of one side of frame is installed with the reduction motor for driving the work of connecting rod type gear pair pull structure.

[0005] Preferably, the lower surface of the beam plate is fixed to the guide rail, and the upper surface of the C-shaped sliding frame is provided with a sliding sleeve for sliding cooperation with the guide rail.

[0006] Preferably, an annular sinking portion is arranged at the center position of the top end of the machine table, and an internally threaded through hole is arranged at the corner position of the bottom of the machine table.

[0007] Preferably, the recess has a trapezoidal shape in plan view, and the recess is cut inwardly upward to form a slope at the top of the semicircle positioning seat.

[0008] Preferably, the connecting rod type gear pair pull structure comprises two symmetrical rotating shafts rotatably installed on the front and rear inner walls of the frame and a double-head fish eye connecting rod hingedly installed on the front and rear outer walls of the C-shaped sliding frame, the inner wall of one side of the rotating shaft is rotatably provided with two symmetrical main shafts, one of the main shafts is fixedly connected with the output shaft of the reduction motor, the two main shafts are fixedly provided with driving gear plates capable of being engaged with each other, one end of the surface of the rotating shaft is fixedly provided with a driven gear engaged with the driving gear plate, one end of the rotating shaft is fixedly provided with a connecting plate, and one end of the connecting plate is hingedly connected with one end of the double-head fish eye connecting rod.

[0009] Preferably, the semicircle positioning seat and the C-shaped sliding frame are made of alloy steel material.

[0010] Compared with the prior art, the utility model discloses the beneficial effect is: a kind of tooling for replacing wind power variable pitch motor bearing through the cooperation of rack, machine table, crossbeam plate, C mouth sliding frame, semicircle positioning seat, connecting rod type gear pair pull structure and reduction motor, form a set of efficient, accurate bearing fixing system, wherein using two symmetrical installation C mouth sliding frame and semicircle positioning seat design, through the simple mechanical structure of reduction motor and connecting rod type gear to complete the clamping of bearing, significantly simplify the design of overall system, reduction motor controls the movement of sliding frame by accurate transmission device, avoid the complex pipeline and control system in hydraulic pneumatic system, improve the reliability and maintainability of structure, and compared with multiple cylinders or hydraulic cylinders, the power output of reduction motor can be finely adjusted, avoid the unstable factors caused by uneven cylinder force or hydraulic oil pressure fluctuation. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the three-dimensional structure diagram of the utility model Figure One ;

[0012] Figure 2 It is the three-dimensional structure diagram of the utility model Figure Two ;

[0013] Figure 3 It is the three-dimensional structure diagram of the utility model

[0014] Figure 4 It is the three-dimensional structure diagram of the utility model

[0015] Figure 5 It is the three-dimensional structure diagram of the utility model Figure Three .

[0016] In the drawing: 1, rack;2, crossbeam plate;3, rotating shaft;4, C mouth sliding frame;5, connecting rod type gear pair pull structure;6, reduction motor;7, semicircle positioning seat;701, recess;8, machine table;801, annular sunken part;802, internal thread through hole. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0018] Please refer to Figures 1-5The utility model provides a kind of embodiment: a tool for replacing wind power variable pitch motor bearing, including rack 1 and the beam plate 2 integrally formed on the left and right inner wall of rack 1, the bottom end of two beam plates 2 in the same Y-axis direction is slidably installed with C mouth sliding frame 4, and the bottom end of C mouth sliding frame 4 is fixed with semicircle positioning seat 7, the inside of two semicircle positioning seats 7 is provided with recess 701, the inside of rack 1 is installed with machine table 8 for carrying bearing, the upper surface of machine table 8 and the lower surface of semicircle positioning seat 7 are mutually contacted, the inside wall of one side of rack 1 is provided with the connecting rod type gear pair pull structure 5 for driving two C mouth sliding frame 4 to move towards each other, the outer wall of one side of rack 1 is installed with the speed reducer motor 6 for driving connecting rod type gear pair pull structure 5 to work;

[0019] The lower surface of beam plate 2 is fixed to guide rail, the upper surface of C mouth sliding frame 4 is installed with sliding sleeve for sliding cooperation with guide rail, the guide rail of the lower surface of beam plate 2, sliding table improves the sliding stability of C mouth sliding frame 4 and semicircle positioning seat 7;

[0020] The central position of the top of machine table 8 is provided with annular subsidence part 801, the corner position of the bottom of machine table 8 is provided with internally threaded through hole 802, annular subsidence part 801 is placed into bearing, internally threaded through hole 802 can make machine table 8 and rack 1 be stably bolted and fixed;

[0021] Semicircle positioning seat 7 and C mouth sliding frame 4 are made of alloy steel material, the plan view shape of recess 701 is trapezoidal, recess 701 is cut out and forms slope on the top of semicircle positioning seat 7, the plan view shape of recess 701 of semicircle positioning seat 7 is trapezoidal, and the trapezoidal groove is cut out upwards, to make the top of semicircle positioning seat 7 form a slope, on the one hand, it is suitable for bearing of different diameter specifications, on the other hand, it is also suitable for bearing of different thickness specifications, to help semicircle positioning seat 7 better realize fastening effect;

[0022] Because the top of semicircle positioning seat 7 is slope, after two semicircle positioning seats 7 actively clamp bearing, the Z-axis direction of bearing is also applied downward force;

[0023] The connecting rod type gear pair pulling structure 5 includes two symmetrical rotating shafts 3 rotatably installed on the front and rear inner walls of the rack 1 and a double-head fish-eye connecting rod rotatably installed on the front and rear outer walls of the C-shaped sliding frame 4. The inner wall of the rack 1 on one side of the rotating shaft 3 is rotatably installed with two symmetrical main shafts, one of which is fixedly connected with the output shaft of the speed reducer motor 6, and the two main shafts are fixedly provided with driving gear plates that can mesh with each other. One end of the surface of the rotating shaft 3 is fixedly provided with a driven gear that meshes with the driving gear plate. One end of the connecting plate fixedly provided on the rotating shaft 3 is rotatably connected with one end of the double-head fish-eye connecting rod. The rotating power of the speed reducer motor 6 is transmitted to the rotating shaft 3 through the driving gear plate and the driven gear, and then the rotating shaft 3 is rotated. Since the connecting plate is installed on the end of the rotating shaft 3 away from the speed reducer motor 6, the connecting plate rotates around the rotating shaft 3. At this time, the rotating action of the connecting plate is converted into the horizontal movement of the C-shaped sliding frame 4 and the semicircular positioning seat 7 through the double-head fish-eye connecting rod. In this process, the other side of the C-shaped sliding frame 4 and the semicircular positioning seat 7 also synchronously slide under the driving of the connecting rod type gear pair pulling structure 5, that is, the two semicircular positioning seats 7 move towards each other. The connecting rod type gear pair pulling structure 5 converts the movement of the two C-shaped sliding frames 4 into the clamping force of the semicircular positioning seat 7, ensuring the stability and consistency of the clamping process.

[0024] In use, the rack 1, the machine table 8 and the beam plate 2 are first ensured to be stably installed, all components should be free of looseness and damage. At the same time, it is checked whether the power connection of the speed reducer motor 6 is normal to ensure that it can be normally started. The machine table 8 should be placed with the wind power variable pitch motor main shaft with bearings to be replaced, ensuring that its position is accurate and facilitating subsequent fixing operation. Before fixing the bearings, the operator needs to align the bearings to be fixed with the position of the semicircular positioning seat 7 by hand or auxiliary tools. Then the operator starts the control switch of the speed reducer motor 6, and the speed reducer motor 6 starts to operate. The speed reducer motor 6 transmits the rotating power to the connecting rod type gear pair pulling structure 5. Due to the design of the speed reducer motor 6, the output rotating speed is low but the torque is high, which enables the connecting rod type gear pair pulling structure 5 to smoothly pull the two C-shaped sliding frames 4 to slide inward, that is, the two semicircular positioning seats 7 on the X-axis horizontal direction move close to each other, until the semicircular positioning seat 7 contacts with the outer wall of the bearing and forms a clamping state. The groove 701 in the two semicircular positioning seats 7 is designed to be able to uniformly surround the bearing, ensuring uniform stress and avoiding bearing deformation or damage due to uneven stress. When the two semicircular positioning seats 7 are completely close and clamp the bearing, the speed reducer motor 6 stops operating, keeping the current state. After the bearing is firmly fixed on the machine table 8, it is ensured that there will be no looseness or displacement in subsequent operations. After ensuring that the bearing has been stably fixed, the operator can perform subsequent processing, detection or replacement work. After completing all operations, if the bearing needs to be disassembled, the operator only needs to operate the speed reducer motor 6 in reverse to gradually separate the two C-shaped sliding frames 4 to release the clamping force.

Claims

1. A tooling for replacing a wind turbine variable pitch motor bearing, characterized by: The utility model provides a kind of rack (1) and the beam plate (2) integrally formed on the left and right inner walls of rack (1), the bottom end of two described beam plates (2) in the same Y-axis direction is slidably installed C mouth sliding frame (4), and the bottom end of the C mouth sliding frame (4) is fixed with semicircular positioning seat (7), the inside of two described semicircular positioning seat (7) is provided with recess (701), the inside of the rack (1) is installed with machine table (8) for bearing, the upper surface of machine table (8) and the lower surface of semicircular positioning seat (7) are mutually contacted, the inner wall of one side of the rack (1) is provided with connecting rod type gear pair pull structure (5) for driving two C mouth sliding frame (4) to move towards each other, the outer wall of one side of the rack (1) is installed with reduction motor (6) for driving connecting rod type gear pair pull structure (5) work.

2. A tooling for replacing a bearing of a wind turbine variable pitch motor according to claim 1, characterized in that: The lower surface of the beam plate (2) is fixed to the guide rail, and the upper surface of the C mouth sliding frame (4) is provided with a sliding sleeve for sliding cooperation with the guide rail.

3. A tooling for replacing a bearing of a wind turbine variable pitch motor according to claim 1, characterized in that: An annular sinking portion (801) is arranged at the center position of the top end of the machine table (8), and an internally threaded through hole (802) is arranged at the corner position of the bottom of the machine table (8).

4. The tooling for replacing a bearing of a wind turbine variable pitch motor of claim 1, wherein: The recess (701) is in the shape of a trapezoid in plan view, and the recess (701) is cut inwardly upwardly and forms a slope at the top of the semicircular positioning seat (7).

5. A tooling for replacing a bearing of a wind turbine variable pitch motor according to claim 1, characterized in that: The connecting rod type gear pair pull structure (5) comprises two symmetrical rotating shafts (3) rotatably installed on the front and rear inner walls of the rack (1) and a double-head fish-eye connecting rod rotatably installed on the front and rear outer walls of the C mouth sliding frame (4), the inner wall of the rack (1) on one side of the rotating shaft (3) is rotatably installed with two symmetrical main shafts, one of the main shafts is fixedly connected with the output shaft of the reduction motor (6), and the two main shafts are fixed with driving gear plates that can mesh with each other, one end of the surface of the rotating shaft (3) is fixed with a driven gear that meshes with the driving gear plate, one end of the rotating shaft (3) is fixed with a connecting plate, and one end of the connecting plate is hingedly connected with one end of the double-head fish-eye connecting rod.

6. A tooling for replacing a bearing of a wind turbine variable pitch motor according to claim 5, characterized in that: The semicircular positioning seat (7) and the C mouth sliding frame (4) are made of alloy steel material.

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