CN211332478U - High-temperature high-pressure steam turbine rotor journal grinding equipment - Google Patents

Abstract

The utility model belongs to a mechanical equipment's prosthetic devices especially relates to a high temperature high pressure steam turbine rotor axle journal grinding equipment. The technical requirements of quick overhaul of a power plant are met; and different parts of the rotor shaft neck can be conveniently ground. The transmission shaft is driven by a first stepping motor; the first stepping motor rotates to drive the transmission shaft to rotate, the two small chain wheels rotate along with the transmission shaft to drive the long chain to move, the long chain is in a tensioned state, and the shaft rotates along with the long chain; a vertical plate is arranged between the two vertical plates, a second stepping motor drives a screw rod to rotate, and a screw nut sliding block moves forwards or backwards on the screw rod to drive the vertical plate on the sliding block to move forwards and backwards; the vertical plate is further provided with a servo motor, the vertical plate moves back and forth relative to the lead screw, and the grinding wheel bearing seat is driven to move back and forth through the right-angle support and the harness cord, so that the grinding wheel connected with the grinding wheel bearing seat moves along with the grinding wheel bearing seat.

Description

High temperature and high pressure steam turbine rotor journal grinding equipment

technical field

The invention belongs to a repairing device for mechanical equipment, in particular to a high-temperature and high-pressure steam turbine rotor journal grinding device.

Background technique

With the development of the economy, the progress of science and technology and the increase of labor costs, the requirements for the repair of large shafts are becoming more and more strict.

Especially for the various rotors of the steam turbine system and boiler system of the power plant, because they are set in the high temperature and high pressure cylinder body, after a period of use, the surface of the journal will be worn and eroded due to the unclean oil quality and other reasons. It will cause deformation and decrease in roundness; it will bring great safety hazards to the operation of the steam turbine. Therefore, it is necessary to carry out surfacing and grinding repair on the defect of the journal.

The current problem is that for various rotors of the steam turbine system and boiler system of the power plant, the shaft diameter of the rotor is generally about 300mm-500mm, and due to the large diameter surface, after surfacing welding, the traditional manual grinding is used, which is time-consuming. It is laborious, and it is difficult to ensure the dimensional accuracy and position tolerance of the journal. Can not meet the standard of safe use after repair.

Our company applied for a patent in 2014, the application number is 201410251327.6, the patent name is "High Temperature and High Pressure Steam Turbine Rotor Shaft Diameter Repair Equipment", the patent discloses a kind of automobile wheel rotor shaft diameter repair equipment, which can reduce manpower material resources to meet the technical requirements of rapid maintenance of power plants. However, when the equipment is in use, it can only be ground at a fixed point because the rotor cannot move, and the electric motor on the equipment cannot move at will; therefore, there is still inconvenience in operation.

SUMMARY OF THE INVENTION

In view of the defects in the prior art, the present invention provides a high-temperature and high-pressure steam turbine rotor shaft diameter grinding equipment, which is an improvement made on the application number 201410251327.6 and the patent titled "High-temperature and high-pressure steam turbine rotor shaft diameter repairing equipment". .

It is suitable for processing and repairing different shaft journals; it can quickly grind welding high points, scouring high points and shaft diameter deformation high points. requirements; and can easily grind different parts of the rotor journal.

In order to achieve the above purpose, the present invention adopts the following technical scheme, including two curved plates, the two ends of each curved plate are connected to a roller frame by a pin, and each roller frame is assembled with two rollers; it is characterized in that each A vertical plate is arranged above the curved plate.

The surface of the rotor shaft is surrounded by two long chains. The two long chains are arranged on the left and right sides of the shaft. The long chains are meshed and connected with the small sprockets. The two small sprockets are connected by a transmission shaft. It passes through the vertical plate and is connected with the vertical plate through the bearing. The transmission shaft is driven by the first step motor; the first step motor rotates, which drives the drive shaft to rotate, and the two small sprockets rotate along with it, which drives the long chain to move, and the long chain moves. The chain is under tension and the shaft turns with it.

A vertical plate is arranged between the two vertical plates, the vertical plate is installed on the nut slider, the nut slider is connected with a lead screw, the lead screw is supported between the two vertical plates through a bearing, and the lead screw extends One end of the vertical plate is connected with the second stepper motor through a coupling; the second stepper motor drives the lead screw to rotate, and the nut slider moves forward or backward on the lead screw, driving the vertical axis on the slider. The board moves back and forth.

A servo motor is also installed on the vertical plate, the output shaft of the servo motor is connected with one end of a gear sleeve through a key, and one end of a sprocket shaft is connected with the other end of the gear sleeve through a key; the other end of the sprocket shaft is connected by a key. One end is connected with the large sprocket by a key, and the end that goes out of the large sprocket is pressed with a gear pressing plate and locked and fixed with bolts.

The large sprocket is connected to a small sprocket through a short chain, the small sprocket is connected to a grinding wheel shaft, and grinding wheels are installed at both ends of the grinding wheel shaft, and the grinding wheel shaft is also equipped with a grinding wheel bearing seat, and the grinding wheel shaft passes through the bearing seat. the bearing; the bearing seat is threadedly connected with one end of a wire; the other end of the wire passes through a right-angle side of the right-angle support, and the penetrating end is locked with a nut; the other end of the right-angle support The right-angled side is connected with the vertical plate by screws.

The vertical plate moves back and forth relative to the lead screw, and the grinding wheel bearing seat is driven to move forward and backward through the right-angle support and the through wire, so that the grinding wheel connected with the grinding wheel bearing seat moves along with it.

Further, the vertical plate and the curved plate are detachably connected.

Further, outside the grinding wheel, the end of the grinding wheel shaft is pressed with a large washer and locked and fixed with a screw.

Further, a shaft retaining ring is also assembled on the grinding wheel shaft and between the grinding wheel sprocket and the grinding wheel.

Compared with the prior art, the present invention has beneficial effects.

The invention is suitable for processing and repairing different shaft diameters, and can quickly grind welding high points, scouring high points and shaft diameter deformation high points. and the shaft is driven by the stepping motor to rotate to the position that needs to be ground, and the vertical plate and the grinding wheel grinding equipment connected to the vertical plate can also be driven by the lead screw to move back and forth, so as to facilitate the adjustment of different parts of the rotor shaft diameter. purpose of grinding.

Description of drawings

The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The protection scope of the present invention is not limited to the following descriptions.

Fig. 1 is the general assembly drawing of the shaft diameter grinding of the present invention.

FIG. 2 is a plan view of FIG. 1 .

Figure 3 is a schematic diagram of a servo motor.

Figure 4 is a schematic view of the structure of the grinding wheel of the present invention.

In the figure, 1 is the vertical plate, 2 is the roller, 3 is the first stepper motor, 4 is the small sprocket, 5 is the rotor shaft, 6 is the grinding wheel bearing seat, 7 is the right angle support, 8 is the short chain, and 9 is the Thread, 10 is a servo motor, 11 is a lead screw, 12 is a vertical plate, 13 is a transmission shaft, 14 is a grinding wheel, 15 is a second stepper motor, 16 is a large sprocket, 17 is a gear sleeve, and 18 is a long chain , 19 is a gear plate, 20 is a grinding wheel sprocket, 21 is a grinding wheel shaft, 22 is a grinding wheel bearing seat, 23 is a large washer, and 24 is a shaft retaining ring.

Detailed ways

As shown in Figures 1-4, the present invention includes two curved plates, and both ends of each curved plate are connected to a roller frame by a pin; The improvement made on 201410251327.6, this is the existing technology, and will not be repeated. For details, please refer to the "High Temperature and High Pressure Steam Turbine Rotor Shaft Diameter Repair Equipment" applied for in 2014). The improvement of this application is that each curved plate is provided with a vertical board 12.

The surface of the rotor shaft 5 is surrounded by two long chains 18. The two long chains 18 are arranged on the left and right sides of the shaft 5. The long chains 18 are meshed with the small sprockets 4, and the two small sprockets 4 are connected through the transmission shaft 13. And the two ends of the transmission shaft 13 pass through the vertical plate 12 and are connected with the vertical plate 12 through bearings. The transmission shaft 13 is driven by the first step motor 3; the first step motor 3 rotates to drive the drive shaft 13 to rotate, The two small sprockets 4 rotate accordingly, driving the long chain 18 to move, and the long chain 18 is in a tensioned state, and the shaft rotates accordingly.

A vertical plate 1 is arranged between the two vertical plates 12. The vertical plate 1 is installed on the nut slider, and the nut slider is connected with a screw 11, and the screw 11 is supported on the two vertical plates through bearings. 12, one end of the lead screw 11 protruding from the vertical plate 12 is connected to the second stepper motor 15 through a coupling; Move forward or backward to drive the vertical plate 1 on the slider to move forward and backward.

A servo motor 10 is also installed on the vertical plate 1, the output shaft of the servo motor 10 is connected with one end of a gear sleeve 17 through a key, and one end of a sprocket shaft is connected with the other end of the gear sleeve 17 through a key connection; The other end of the sprocket shaft is connected with the large sprocket 16 by a key, and one end passing through the large sprocket 16 is pressed by the gear pressing plate 19 and locked and fixed with bolts.

The large sprocket 16 is connected with a grinding wheel sprocket 20 through a short chain 8, and the grinding wheel sprocket 20 is connected with a grinding wheel shaft. Both ends of the grinding wheel shaft are equipped with grinding wheels 14. The grinding wheel shaft is also equipped with grinding wheel bearing seats 22. The grinding wheel shaft passes through the bearing of the bearing seat 22; the bearing seat 22 is threadedly connected with one end of a through wire 9; The nut is locked; the other right-angle side of the right-angle support 7 is connected with the vertical plate 1 by screws.

The vertical plate 1 moves back and forth relative to the lead screw 11 , and drives the grinding wheel bearing seat 22 to move forward and backward through the right angle support 7 and the wire 9 , so that the grinding wheel 14 connected to the grinding wheel bearing seat 22 moves accordingly. And as a preferred solution, a long slot can be set on the right-angle side connecting the right-angle support and the vertical plate, and the vertical plate is connected with the right-angle side by passing the screw through the long slot. Adjust the upper and lower positions of the right-angle support on the vertical plate, so as to achieve the purpose of adjusting the distance between the grinding wheel and the rotor shaft.

Further, the vertical plate 12 is detachably connected to the curved plate.

Further, outside the grinding wheel 14, the end of the grinding wheel shaft is pressed with a large washer 23, and is locked and fixed with a screw.

Further, on the grinding wheel shaft and between the grinding wheel sprocket 20 and the grinding wheel 14, a shaft retaining ring 24 is also assembled. A shaft retaining ring is also fitted between the grinding wheel sprocket 20 and the grinding wheel bearing seat 22 .

It can be understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those of ordinary skill in the art should understand that the present invention can still be modified or It is equivalent to replacement to achieve the same technical effect; as long as the needs of use are met, they are all within the protection scope of the present invention.

Claims (4)

1. High-temperature and high-pressure steam turbine rotor journal grinding equipment, comprising two curved plates, each of the two ends of each curved plate is connected to a roller frame by a pin, and each roller frame is assembled with two rollers; it is characterized in that, each A vertical plate is arranged above the curved plate; The surface of the rotor shaft is surrounded by two long chains. The two long chains are arranged on the left and right sides of the shaft. The long chains are meshed and connected with the small sprockets. The two small sprockets are connected by a transmission shaft. It passes through the vertical plate and is connected with the vertical plate through the bearing. The transmission shaft is driven by the first step motor; the first step motor rotates, which drives the drive shaft to rotate, and the two small sprockets rotate along with it, which drives the long chain to move, and the long chain moves. The chain is under tension, and the shaft rotates accordingly; A vertical plate is arranged between the two vertical plates, the vertical plate is installed on the nut slider, the nut slider is connected with a lead screw, the lead screw is supported between the two vertical plates through a bearing, and the lead screw extends One end of the vertical plate is connected with the second stepper motor through a coupling; the second stepper motor drives the lead screw to rotate, and the nut slider moves forward or backward on the lead screw, driving the vertical axis on the slider. The board moves back and forth; A servo motor is also installed on the vertical plate, the output shaft of the servo motor is connected with one end of a gear sleeve through a key, and one end of a sprocket shaft is connected with the other end of the gear sleeve through a key; the other end of the sprocket shaft is connected by a key. One end is connected with the large sprocket by a key, and the end that goes out of the large sprocket is pressed with a gear pressing plate, and is locked and fixed with bolts; The large sprocket is connected to a small sprocket through a short chain, the small sprocket is connected to a grinding wheel shaft, and grinding wheels are installed at both ends of the grinding wheel shaft, and the grinding wheel shaft is also equipped with a grinding wheel bearing seat, and the grinding wheel shaft passes through the bearing seat. the bearing; the bearing seat is threadedly connected with one end of a wire; the other end of the wire passes through a right-angle side of the right-angle support, and the penetrating end is locked with a nut; the other end of the right-angle support The right-angled edge is connected with the vertical plate by screws; The vertical plate moves back and forth relative to the lead screw, and the grinding wheel bearing seat is driven to move forward and backward through the right-angle support and the through wire, so that the grinding wheel connected with the grinding wheel bearing seat moves along with it. 2 . The high temperature and high pressure steam turbine rotor journal grinding equipment according to claim 1 , wherein the vertical plate and the curved plate are detachably connected. 3 . 3. The high temperature and high pressure steam turbine rotor journal grinding equipment according to claim 1, characterized in that: outside the grinding wheel, the end of the grinding wheel shaft is pressed with a large washer, and is locked and fixed with a screw. 4 . The high temperature and high pressure steam turbine rotor journal grinding equipment according to claim 1 , wherein a shaft retaining ring is also installed on the grinding wheel shaft, between the grinding wheel sprocket and the grinding wheel. 5 .

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