CN101428384A - Apparatus for repairing generator rotor shaft neck - Google Patents

Abstract

The invention discloses a generator rotor journal repairing device, which belongs to the mechanical shaft repairing device, and solves the problems of low production efficiency, low quality of welding, grinding and polishing in the prior art, and required precision cannot be achieved after repairing. It includes the support frame (1, 5) of the generator rotor, the generator rotor (6), the driving motor and the reducer (2) of the generator rotor, and a welding machine (3) is arranged on one side of the generator rotor (6) , the other side of the generator rotor (6) is provided with a grinding mechanism support (7), on which the grinding mechanism support (7) is provided with a lifting platform (8) that can be lifted up and down, and there is a fixed block on it (9) and movable block (10), leading screw (15) can drive movable block (10) in the dovetail groove of fixed block (9) to feed or retreat backward along the horizontal direction, in the movable block (10) A grinding head drive motor (11) is fixedly arranged above, and a grinding head (13) is arranged on its output shaft. It is suitable for the repair of the shaft diameter of the steam turbine rotor in the power plant after wear.

Description

A kind of repair equipment of generator rotor shaft journal

technical field

The invention relates to a repairing device for a mechanical shaft, in particular to a mechanical repairing device for welding and polishing the rotor of a steam turbine generator.

Background technique

The turbogenerator rotor is one of the most important equipment in power generation equipment. It is bulky and expensive. It is unrealistic to directly replace the worn rotor. The existing technology is to carry out manual surfacing welding and manual grinding and polishing on the damaged rotor. This repair method has the problems of high labor intensity, low production efficiency, low quality of welding, grinding and polishing, and the required precision cannot be achieved after repair. .

Contents of the invention

The generator rotor shaft diameter repairing equipment provided by the invention solves the problems in the prior art of high labor intensity, low production efficiency, low quality of welding, grinding and polishing, and failure to achieve the required precision after repairing.

The present invention solves the above problems through the following solutions:

A generator rotor shaft journal repairing device, including a generator rotor support frame 1, a support frame 5, a generator rotor 6, a drive motor and a reducer 2 for the generator rotor, a drive motor and a reducer 2 for the generator rotor A transmission belt is provided between the output shaft of the generator rotor 6 and one end of the generator rotor 6, and a welding machine 3 is provided on one side of the generator rotor 6 to realize welding repair of the generator rotor journal. The other side of the grinding mechanism support 7 is provided with a lifting platform 8 that can be lifted up and down on the grinding mechanism support 7, and a lifting platform rocking handle 14 is provided on the grinding mechanism support 7. A fixed block 9 with a dovetail groove is fixedly arranged on the top, and a movable block 10 is movably arranged on the fixed block 9. The lower end of the movable block 10 is a dovetail-shaped projection, and the dovetail-shaped projection is movably arranged on the fixed In the dovetail groove of the block 9, the leading screw 15 can drive the movable block 10 to feed or withdraw backward in the dovetail groove of the fixed block 9 along the horizontal direction, and the grinding head drive motor 11 is fixedly arranged on the movable block 10, and A reducer 12 is arranged on the output shaft of the head drive motor 11 , and a grinding head 13 is arranged on the output shaft of the reducer 12 .

Through the cooperation of the up-and-down direction of the lifting platform 8 and the cooperation of the movable block 10 in the dovetail groove of the fixed block 9 in the horizontal direction forward or backward, the grinding arc of the grinding head 13 on the outer circle of the generator rotor 6 The angle is 0-45 degrees.

Described grinding head 13 is emery grinding head or velvet grinding head,

The invention solves the problem of repairing the shaft diameter of the steam turbine rotor in a power plant, greatly improves the repair quality, reduces the labor intensity of repair workers, and improves production efficiency.

Description of drawings:

Fig. 1 is a structural representation of the present invention

Detailed ways

A repairing device for generator rotor shaft journal, comprising a generator rotor support frame 1, a support frame 5, a generator rotor 6, a drive motor and a reducer 2 for the generator rotor, wherein the drive motor can adopt a variable frequency motor for stage adjustment, a transmission belt is set between the drive motor of the generator rotor and the output shaft of the reducer 2, and one end of the generator rotor 6, and a welding machine 3 is set on one side of the generator rotor 6, and the welding system can be horizontally The direction of horizontal movement, the horizontal movement distance depends on the repair range, the maximum is not more than 1000mm, but the actual application is about 200mm. The speed of the lateral and horizontal movement of the welding system matches the rotation speed of the rotor 6, so that the welding spots take a spiral trajectory, ensuring effective and reasonable overlapping of the deposited metal, and realizing the welding repair of the generator rotor journal. The other side of rotor 6 is provided with grinding mechanism support 7, and on this grinding mechanism support 7, is provided with the lifting platform 8 that can lift up and down, on grinding mechanism support 7, is provided with lifting platform rocking handle 14, in lifting A fixed block 9 with a dovetail groove is fixedly arranged on the table 8, and a movable block 10 is movable on the fixed block 9. In the dovetail groove of the fixed block 9, the lead screw 15 can drive the movable block 10 to advance or retreat in the horizontal direction in the dovetail groove of the fixed block 9, and the grinding head driving motor 11 is fixedly arranged on the movable block 10 , The output shaft of the grinding head driving motor 11 is provided with a reducer 12 , and the output shaft of the reducer 12 is provided with a grinding head 13 .

The grinding of the grinding head 13 on the outer circle of the generator rotor 6 is realized through the cooperation of the up and down direction of the lifting table 8 and the cooperation of the movable block 10 in the dovetail groove of the fixed block 9 in the horizontal direction forward or backward. , and the continuous adjustable range of the grinding point of the grinding head 13 on the outer circle of the rotor 6 is an arc angle range of 0-45 degrees. Described grinding head 13 is emery grinding head or velvet grinding head,

Claims (3)

1, a kind of prosthetic appliance of generator rotor shaft neck, the bracing frame (1 that comprises generator amature, 5), the drive motors of generator amature (6) and generator amature and decelerator (2), be provided with driving belt between one end of the output shaft of the drive motors of generator amature and decelerator (2) and generator amature (6), side at generator amature (6) is provided with bonding machine (3), realization is to the REPAIR WELDING of generator rotor shaft neck, it is characterized in that: the opposite side at described generator amature (6) is provided with grinding mechanism support (7), this grinding mechanism support (7) but be provided with the lifting platform (8) of above-below direction lifting, grinding mechanism support (7) is provided with lifting platform and shakes handle (14), on lifting platform (8), be set with a fixed block (9) that has dovetail groove, on fixed block (9), be movably set with movable block (10), the lower end of this movable block (10) is the swallowtail shape projection, this swallowtail shape projection is movably arranged in the dovetail groove of described fixed block (9), leading screw (15) can drive movable block (10) along continuous straight runs in the dovetail groove of fixed block (9) march forward to or withdraw from backward, on movable block (10), be set with bistrique drive motors (11), the output shaft of bistrique drive motors (11) is provided with decelerator (12), and the output shaft of decelerator (12) is provided with bistrique (13).

2, the prosthetic appliance of a kind of generator rotor shaft neck according to claim 1, it is characterized in that: above-below direction lifting and movable block (10) along continuous straight runs in the dovetail groove of fixed block (9) by lifting platform (8) march forward to or cooperating of withdrawing from backward, the grinding arc angle of bistrique (13) on the cylindrical of generator amature (6) is the 0-45 degree.

3, the prosthetic appliance of a kind of generator rotor shaft neck according to claim 1 and 2 is characterized in that: described bistrique (13) is diamond dust bistrique or suede matter bistrique.

Images