CN115498834A - Power plant generator rotor supporting device - Google Patents

Abstract

The invention discloses a power plant generator rotor supporting device which comprises a carrier roller, wherein the carrier roller is arranged on a bracket and used for forming a rotor mounting position; the bottom of the bracket is provided with a lead screw, the lead screw is provided with an adjusting disc, the first end of the adjusting disc is arranged in the inner ring of the bearing, the outer ring of the bearing is arranged on a bearing seat, the bottom of the bearing seat is welded on the upper movable support, the second end of the adjusting disc is provided with a small hole, and the adjusting disc is adjusted by inserting a stick, so that the height of the bracket is adjusted; when the generator rotor is placed, two sets of the device are arranged on two sides of the rotor respectively and matched with the supporting rotor; rotating the adjusting disc to adjust the jacking distance of the lead screw according to the position and the size of the journal of the rotor, so that the height of the supporting device is the height required by the placement of the rotor; according to the length of the rotor, the device is dragged to the two sides of the rotor, so that the purpose of placing the rotor in a balanced manner is achieved; meanwhile, the device realizes split arrangement, and does not need to be provided with a cross arm and a support independently, thereby saving the transportation and storage space.

Description

Power plant generator rotor supporting device

Technical Field

The invention belongs to the technical field of generators, and particularly relates to a power plant generator rotor supporting device.

Background

The generator is generally composed of a stator, a rotor, an end cover, a brush, a base, a bearing and other parts, and the rated rotation speed of the rotor is 3000 r/min. The rotor is composed of rotor iron core, rotor magnetic pole, slip ring, fan and rotary shaft. The stator and the rotor of the generator are connected and assembled through a bearing, a machine base and an end cover. The general 3 ~ 5 years of overhaul of turbo generator are once, combine the generator running state to carry out the general 1 times of generator fixed maintenance/year, can take out to the generator rotor in the interim and inspect, maintain the maintenance, set up more power plant to the generator unit, the generator rotor is taken out to install and is overhauld comparatively frequently.

The rotor of the generator is installed and placed without leaving the rotor supporting device, if the rotor is placed on the supporting device, the gravity of the rotor cannot be uniformly dispersed, and the rotor is damaged in an accelerating mode. Because the size of the generator is different, the rotor structure and the size of the generator are different, and usually one set of rotor supporting device is arranged on one unit, so that the universality is poor. In addition, the generator rotor support is generally designed into a whole, occupies a large space and is inconvenient to consign and store.

In order to overcome the defects and troubles, the power plant generator rotor supporting device is provided.

Disclosure of Invention

The invention aims to provide a power plant generator rotor supporting device.

The technical scheme adopted by the invention for solving the technical problems is as follows: a power plant generator rotor supporting device comprises a carrier roller, wherein the carrier roller is arranged on a bracket and used for forming a rotor mounting position; the bottom of bracket is equipped with the lead screw, installs the adjusting disk on the lead screw, and the first end of adjusting disk is installed in the inner circle of bearing, and the outer lane of bearing is installed on the bearing frame, and the bottom welding of bearing frame is on last movable support, and the second end of adjusting disk is equipped with the aperture, through inserting the rod adjustment adjusting disk to the height of adjustment bracket.

Specifically, the movable support is provided with an upper bedplate and a lower bedplate, supporting legs are arranged between the upper bedplate and the lower bedplate, and a roller shaft for mounting rollers is welded on the side surface of the lower bedplate.

Specifically, the middle parts of the upper bedplate and the lower bedplate are respectively provided with a through hole, so that the screw rod can move up and down.

Specifically, the bracket is provided with an axial clamping groove and a horizontal clamping groove, and a carrier roller is installed in the axial clamping groove and used for placing a rotor shaft neck.

Specifically, the lead screw is provided with an external thread, and an internal thread is arranged inside the adjusting disk, so that the lead screw is meshed with the adjusting disk.

Specifically, the bearing is an angular contact ball bearing.

The invention has the following beneficial effects: when the generator rotor is placed, two sets of the device are arranged on two sides of the rotor respectively and matched with the supporting rotor; according to the position and the size of a rotor journal, rotating the adjusting disc to adjust the jacking distance of the screw rod, so that the height of the supporting device is the height required by the placement of the rotor; according to the length and the structure of the rotor, dragging the rotor supporting devices with the rollers to be respectively arranged at the two sides of the rotor so as to achieve the aim of placing the rotor in a balanced manner; meanwhile, the rotor supporting device realizes split arrangement, and a cross arm and a support do not need to be arranged independently, so that the transportation and storage space is saved.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a top view of the present invention.

Fig. 4 is a side view of the present invention.

Fig. 5 is an exploded view of the present invention.

In the figure: 1-carrying roller; 2-a bracket; 3-adjusting the disc; 4-a bearing; 5-a lead screw; 6-a support leg; 7-lower bedplate; 8-bearing seats; 9-upper bedplate; 10-a roller; 11-roller shaft.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-5, the power plant generator rotor supporting device comprises a fixed bracket 2, an adjusting disc 3, a screw rod 5, an upper bedplate 9, a lower bedplate 7 and the like.

As shown in fig. 1, the bracket 2 is composed of two support plates and a middle connecting plate, the middle connecting plate is an arc plate, the outer circle diameter of the middle connecting plate is the same as the outer circle diameter of the two support plates, and the two support plates are symmetrically welded on the two sides of the connecting plate; four clamping grooves are processed on the supporting plate, the clamping grooves are symmetrically arranged in pairs, and the clamping grooves on the two sides are correspondingly the same in size.

The carrier roller 1 is a solid cylinder, supports matched with the clamping grooves of the bracket 2 are machined on two sides of the carrier roller 1, the diameter of the outer circle of each support is slightly smaller than the diameter of the arc of each clamping groove, and the carrier roller can be axially and freely rotated when being placed in the clamping grooves; the bearing roller quantity is two, and during the use, the equal high cooperation of 2 bearing rollers 1 supports the rotor axle journal.

The circumference of the screw rod 5 is provided with a trapezoidal (T-shaped) external thread, the internal thread of the screw rod is meshed with the adjusting disc 3 for transmission, and the polished rod part at the top of the screw rod 5 is welded and fixed with the excircle part at the bottom of the bracket 2, so that the bracket 2 can synchronously lift along with the screw rod 5.

Four small holes are symmetrically processed on the excircle of the adjusting disc 3, metal rods slightly smaller than the hole diameter can be inserted into the small holes, and external force is applied to rotate the adjusting disc 3 so as to realize the lifting of the screw 5; when the device is in no load, the bracket 2 can be directly rotated to realize the lifting of the lead screw 5 (or the bracket).

The adjusting disc 3 is connected with an upper bedplate 9 of the supporting device through a bearing 4, and the inner ring and the outer ring of the bearing 4 are respectively installed with the adjusting disc 3 and the bearing seat 8 in a transition fit way; the bearing 4 is a radial thrust ball bearing, and the thrust direction of the bearing 4 is vertically upward, and bears the vertical direction load applied to the bracket 2 after the rotor is placed.

A bearing seat 8 is welded at the central part of the upper bedplate 9 and can bear the pressure transmitted by the bearing 4; the upper bedplate 9 is welded on the lower bedplate 7 through four cylindrical supporting legs 6, the cylindrical supporting legs 6 are uniformly distributed at four corners of the upper bedplate 9 and the lower bedplate 7, the length and the inclination are consistent, and the borne pressure can be uniformly distributed on the lower bedplate 7.

A round hole larger than the outer diameter of the screw 5 is processed in the middle of the lower bedplate 7, so that the screw 5 can lift without resistance; the left side and the right side of the lower bedplate 7 are welded with roller shafts 11, and the positions of the roller shafts 11 are respectively provided with rollers 10, so that the whole rotor supporting device can move and bear the vertical pressure after the rotor is placed.

The using method of the invention comprises the following steps: before the generator rotor is placed, rotor supporting devices with idler wheels are dragged according to the length and the structure of the rotor and are respectively arranged at the positions of two side journals of the rotor to be placed. A metal stick slightly smaller than the aperture is inserted into a small hole of the adjusting disc 3 of the supporting device, external force is applied to rotate the adjusting disc 3, and the lifting screw 5 enables the height of the bracket 2 (carrier roller) to reach the height required by the placement of the generator rotor; after the adjustment is finished, the generator rotor can be directly placed on the supporting devices on the two sides, and the purpose of stably placing the generator rotor is achieved; meanwhile, the carrier roller 1 is in cylindrical surface contact with the generator rotor, and the purpose of freely turning the rotor during maintenance can be achieved.

The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.

The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.

Claims (6)

1. The power plant generator rotor supporting device is characterized by comprising a carrier roller, wherein the carrier roller is arranged on a bracket and used for forming a rotor mounting position; the bottom of the bracket is provided with a lead screw, the lead screw is provided with an adjusting disc, the first end of the adjusting disc is arranged in the inner ring of the bearing, the outer ring of the bearing is arranged on the bearing seat, the bottom of the bearing seat is welded on the upper movable support, the second end of the adjusting disc is provided with a small hole, and the adjusting disc is adjusted by inserting a rod, so that the height of the bracket is adjusted.

2. A power plant generator rotor support apparatus according to claim 1, wherein the movable support has an upper platen and a lower platen, a leg is provided between the upper platen and the lower platen, and a roller shaft for mounting the roller is welded to the side of the lower platen.

3. A power plant generator rotor support apparatus as claimed in claim 2, wherein the upper platen and the lower platen each have a through hole in the middle to allow the lead screw to move up and down.

4. A power plant generator rotor support device as claimed in claim 1, wherein the bracket is provided with axial slots and horizontal slots, and the axial slots are configured with carrier rollers for receiving the shaft journals of the rotor.

5. A power plant generator rotor support apparatus according to claim 1, wherein the lead screw is externally threaded and the adjustment disk is internally threaded such that the lead screw engages the adjustment disk.

6. A power plant generator rotor support apparatus as claimed in claim 1, wherein the bearings are angular ball bearings.

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