Rotor clamping device

Abstract

The utility model discloses a rotor clamping device which comprises a base, the top of the base is fixedly connected with a case and a bearing seat, the interior of the case is fixedly connected with a gear motor, one end of an output shaft of the gear motor and the interior of the bearing seat are both fixedly connected with end seats, a connecting plate is fixedly connected between the two end seats, and the connecting plate is fixedly connected with the bearing seat. And first electric push rods are fixedly connected to the outer walls of the two end seats. The first electric push rod drives the first V-shaped plate to be automatically centered, it is ensured that the steam turbine rotor spindle is rapidly and accurately positioned in the V-shaped notch, manual adjustment errors are reduced, and the clamping efficiency is improved; and the first V-shaped plate and the butt joint disc are cooperatively clamped in the transverse direction, and the second V-shaped plate is pressed downwards and fixed in the longitudinal direction, so that cross-shaped bidirectional constraint is formed, vibration and deflection of the steam turbine rotor spindle body under the high-speed rotation or heavy-load working condition are effectively restrained, and the machining stability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steam turbine rotor technical field especially relates to a rotor clamping device. BACKGROUND

[0002] Steam turbine rotor is the general term of all rotating parts in steam turbine, is one of the core components of steam turbine, wherein the main shaft on steam turbine rotor is one of the core components of steam turbine, and its main role is to support steam turbine rotor to rotate in bearing, and converts the heat energy and kinetic energy of steam into mechanical energy, and further passes to generator or other mechanical device. The main shaft in the existing small steam turbine rotor needs to use the fixture to clamp when being processed.

[0003] In the prior art, when the main shaft in the small steam turbine rotor is clamped by the traditional fixture, the traditional fixture only relies on one-way mechanical compression or bolt fixation, and is prone to looseness or yaw under high-speed rotation or heavy load working condition, has safety hidden danger, and lacks longitudinal and transverse linkage clamping mechanism, and it is difficult to inhibit the influence of vibration on processing quality, therefore we propose a rotor clamping device to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model discloses a rotor clamping device to solve the shortcomings in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A rotor clamping device, including the base, the top of base is fixedly connected with machine case and bearing seat, the inside of machine case is fixedly connected with speed reducer, and one end of speed reducer output shaft is fixedly connected with end seat in bearing seat, and the fixed connection of two end seats is connected with the connecting plate, and the outer wall of two end seats is fixedly connected with the first electric push rod, and one end of two first electric push rods is fixedly connected with the first V-shaped plate, and the outer wall of two first electric push rod output ends is fixedly connected with the end plate, and the outer wall of two end plates is fixedly connected with the round frame, and the inside of round frame is fixedly connected with servo motor, and the outer wall of two end plates is rotatably embedded with the docking disc, and one end of two servo motor output shafts is fixedly connected with the outer wall of two docking discs respectively, and the top of connecting plate is equipped with clamping assembly.

[0007] Preferably, the clamping assembly comprises two second V-shaped plates, two T-shaped vertical grooves are formed in the outer walls of the two first V-shaped plates, the inner walls of the four T-shaped vertical grooves are slidably connected with T-shaped blocks, the two T-shaped blocks are fixedly connected with the outer walls of the two second V-shaped plates respectively, the outer walls of the two first V-shaped plates are fixedly connected with two second electric push rods, and the top portions of the output ends of the two second electric push rods are fixedly connected with the bottoms of the second V-shaped plates.

[0008] Preferably, the inner wall of the case is provided with an end hole, and the inner wall of the end hole is rotatably connected with the outer wall of the output shaft of the speed reducer, so that the position of the turbine rotor main shaft body can be changed by rotating the end seat driven by the speed reducer.

[0009] Preferably, the outer walls of the two end plates are provided with circular holes, and the inner walls of the two circular holes are rotatably connected with the outer walls of the two servo motor output shafts, so that the two butt joint discs are driven to rotate synchronously by the servo motors, the outer walls of the two servo motor output shafts are provided with existing encoders, and the running state of the two servo motors can be monitored through the feedback signals of the encoders, so that the speed of the servo motors can be adjusted to realize synchronization.

[0010] Preferably, the outer walls of the two second V-shaped plates and the two first V-shaped plates are rotatably embedded with a plurality of balls, so that the turbine rotor main shaft body can be rotated with the aid of the plurality of balls.

[0011] Preferably, the turbine rotor main shaft body is placed between the first V-shaped plate and the second V-shaped plate.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The first V-shaped plate is automatically centered by the first electric push rod, the turbine rotor main shaft is quickly and accurately positioned in the V-shaped notch, the manual adjustment error is reduced, and the clamping efficiency is improved.

[0014] The first V-shaped plate and the butt joint disc are cooperatively clamped in the transverse direction, and the second V-shaped plate is fixed by being pressed downward in the longitudinal direction, so that a cross-shaped bidirectional constraint is formed, the vibration and the deflection of the turbine rotor main shaft body under high-speed rotation or heavy load working conditions are effectively inhibited, and the machining stability is improved.

[0015] The balls are uniformly distributed in the V-shaped groove, the frictional resistance is reduced, and the rotation of the turbine rotor main shaft body is smooth; the butt joint disc and the turbine rotor main shaft body are driven to rotate synchronously by the servo motor, and the machining or detection requirements are met.

[0016] The connecting plate is driven by the end seat to rotate as a whole, the inclination angle or the height of the turbine rotor main shaft body can be flexibly adjusted, the multi-station machining requirement is met, and the process adaptability is enhanced. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of a rotor clamping device proposed in this utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of a rotor clamping device proposed in this utility model;

[0020] Figure 3 This utility model proposes a rotor clamping device. Figure 2 A magnified structural diagram of part A in the diagram;

[0021] Figure 4 This is a schematic diagram of the first V-shaped plate, T-shaped block, and ball bearing structure of a rotor clamping device proposed in this utility model.

[0022] In the diagram: 1. Base; 2. Chassis; 3. Gear motor; 4. End seat; 5. Bearing seat; 6. Connecting plate; 7. First electric push rod; 8. First V-shaped plate; 9. End plate; 10. Circular frame; 11. Servo motor; 12. Connecting plate; 13. T-block; 14. Second V-shaped plate; 15. Ball bearing; 16. Steam turbine rotor main shaft body; 17. Second electric push rod. Detailed Implementation

[0023] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Depend on Figures 1-4As shown, it relates to a rotor clamping device, including base 1, base 1 is welded or cast with high strength steel material, ensure the overall rigidity, the bottom can be added shock pad or anchor bolt to adapt to different working conditions, the top of base 1 is fixedly connected with machine box 2 and bearing seat 5, the inside of machine box 2 is fixedly connected with speed reducer motor 3, speed reducer motor 3 selects worm gear reducer, provides stable torque, the inner wall of machine box 2 is provided with end hole, the inner wall of end hole is rotatably connected with the outer wall of speed reducer motor 3 output shaft, the inside of speed reducer motor 3 output shaft and bearing seat 5 is fixedly connected with end seat 4, the connecting plate 6 is fixedly connected between the two end seats 4, the end seat 4 is flange type structure, and is fixed with the connecting plate 6 through bolts, forming a detachable frame, facilitating maintenance.

[0025] The outer wall of the two end seats 4 is fixedly connected with the first electric push rod 7, one end of the two first electric push rods 7 is fixedly connected with the first V-shaped plate 8, the first electric push rod 7 adopts high precision ball screw or hydraulic push rod, pushes the first V-shaped plate 8 to move along the horizontal direction, realizes the automatic centering of the steam turbine rotor main shaft body 16, the outer wall of the output end of the two first electric push rods 7 is fixedly provided with an end plate 9, the end surface of the end plate 9 can be provided with an elastic buffer layer such as polyurethane pad, to avoid direct extrusion of the rotor end surface causing damage.

[0026] The outer wall of the two end plates 9 is fixedly connected with the circular frame 10, the outer wall of the machine box 2 and the circular frame 10 is provided with a plurality of heat dissipation holes or heat dissipation fins, the inside of the circular frame 10 is fixedly connected with the servo motor 11, the outer wall of the two end plates 9 is provided with a circular hole, the inner wall of the two circular holes is rotatably connected with the outer wall of the two servo motor 11 output shafts respectively, the outer wall of the two end plates 9 is rotatably embedded with the butt joint disc 12, one end of the two servo motor 11 output shafts is fixedly connected with the outer wall of the two butt joint discs 12 respectively.

[0027] The top of the connecting plate 6 is provided with a clamping assembly, the clamping assembly includes two second V-shaped plates 14, a plurality of balls 15 are rotatably embedded in the outer wall of the two second V-shaped plates 14 and the two first V-shaped plates 8, the balls 15 are made of wear-resistant alloy steel material, uniformly distributed in the V-shaped groove, reducing the friction resistance, allowing the rotor to rotate freely in the clamped state, the outer wall of the two first V-shaped plates 8 is provided with two T-shaped vertical grooves, the inner wall of the four T-shaped vertical grooves is slidably connected with the T-shaped block 13, the four T-shaped blocks 13 are respectively fixedly connected with the outer wall of the two second V-shaped plates 14 in two groups, the second V-shaped plate 14 is slidably connected with the T-shaped vertical groove of the first V-shaped plate 8 through the T-shaped block 13, forming a vertical guide structure to prevent lateral deviation.

[0028] The outer wall of the two first V-shaped plates 8 is fixedly connected with two second electric push rods 17, the outer wall of the output end of the first electric push rod 7 and the second electric push rod 17 is provided with a sensor, such as a conventional Hall sensor, a position sensor or a potentiometer, which is used for monitoring the position and movement state of the push rod in real time, so that the synchronous operation is ensured, the top of the output end of the two second electric push rods 17 is fixedly connected with the bottom of the second V-shaped plate 14, and the first V-shaped plate 8 and the second V-shaped plate 14 are provided with a steam turbine rotor main shaft body 16.

[0029] Working principle: in use, the steam turbine rotor main shaft body 16 is hoisted between the two first V-shaped plates 8 through the existing hoisting equipment, the two first V-shaped plates 8 are relatively moved under the action of the two first electric push rods 7, so that the two ends of the steam turbine rotor main shaft body 16 are respectively placed on the V-shaped notches of the two first V-shaped plates 8, the steam turbine rotor main shaft body 16 is supported by the two first V-shaped plates 8, and the two abutting plates 12 are pressed to the two ends of the steam turbine rotor main shaft body 16 under the continuous relative movement of the two first V-shaped plates 8, the two second V-shaped plates 14 are respectively driven by the two second electric push rods 17 to move downward, the two second V-shaped plates 14 move downward to clamp the steam turbine rotor main shaft body 16, and the whole is fixed in the horizontal and vertical positions, then the two abutting plates 12 are driven to rotate under the synchronous operation of the two servo motors 11, the steam turbine rotor main shaft body 16 is driven to rotate under the rotation of the two abutting plates 12, the multiple balls 15 assist the stable rotation, and the end seat 4 connected with the reduction motor 3 is driven to rotate under the operation of the reduction motor 3, so that the connecting plate 6 is vertically rotated under the cooperation of the end seat 4 on the bearing seat 5, and the overall position of the steam turbine rotor main shaft body 16 can be adjusted.

[0030] It should be noted that, in actual use, a PLC controller of the prior art can be additionally arranged, and the PLC controller is electrically connected with the reduction motor 3, the first electric push rod 7, the servo motor 11 and the second electric push rod 17, so that the overall operation can be controlled.

[0031] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, the circuit connection adopts the conventional connection mode in the prior art, and details are not described herein, and the components known by the person skilled in the art have structures and principles which can be known by the person skilled in the art through a technical manual or through a conventional experimental method.

[0032] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary and that changes can be made in detail without departing from the principles and spirit of the application. The scope of the application is therefore defined by the appended claims and their equivalents.

Claims

1. A rotor clamping device, comprising a base (1), characterized in that, The top of the base (1) is fixedly connected to the housing (2) and the bearing seat (5). The housing (2) is fixedly connected to the inside of the geared motor (3). One end of the output shaft of the geared motor (3) and the inside of the bearing seat (5) are both fixedly connected to the end seat (4). A connecting plate (6) is fixedly connected between the two end seats (4). The outer walls of the two end seats (4) are fixedly connected to the first electric push rod (7). One end of the two first electric push rods (7) is fixedly connected to the first V-shaped plate (8). The outer walls of the output ends of the two first electric push rods (7) are fixedly fitted with end plates (9). The outer walls of the two end plates (9) are fixedly connected to the round frame (10). The inside of the round frame (10) is fixedly connected to the servo motor (11). The outer walls of the two end plates (9) are rotatably inlaid with docking plates (12). One end of the output shaft of the two servo motors (11) is fixedly connected to the outer walls of the two docking plates (12). The top of the connecting plate (6) is provided with a clamping assembly.

2. The rotor clamping device according to claim 1, characterized in that, The clamping assembly includes two second V-shaped plates (14), and two T-shaped vertical grooves are opened on the outer walls of the two first V-shaped plates (8). T-shaped blocks (13) are slidably connected to the inner walls of the four T-shaped vertical grooves. The four T-shaped blocks (13) are fixedly connected to the outer walls of the two second V-shaped plates (14) in pairs. Two second electric push rods (17) are fixedly connected to the outer walls of the two first V-shaped plates (8). The top of the output end of the two second electric push rods (17) is fixedly connected to the bottom of the second V-shaped plates (14).

3. The rotor clamping device according to claim 1, characterized in that, The inner wall of the chassis (2) is provided with an end hole, and the inner wall of the end hole is rotatably connected to the outer wall of the output shaft of the geared motor (3).

4. The rotor clamping device according to claim 1, characterized in that, Both end plates (9) have circular holes on their outer walls, and the inner walls of the two circular holes are rotatably connected to the outer walls of the output shafts of the two servo motors (11).

5. A rotor clamping device according to claim 2, characterized in that, The outer walls of the two second V-shaped plates (14) and the two first V-shaped plates (8) are each rotatably inlaid with multiple balls (15).

6. A rotor clamping device according to claim 2, characterized in that, The turbine rotor main shaft body (16) is placed between the first V-shaped plate (8) and the second V-shaped plate (14).

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