Main shaft buttress of water-turbine generator set

Abstract

The utility model provides a water-turbine generator set main shaft buttress, which comprises a steel bracket, two symmetrically arranged support arms and a jacking device, the steel bracket is provided with a concave part for placing a main shaft, the middle parts of the support arms are hinged in the bracket, the landing ends of the support arms are positioned at the two ends of the steel bracket, and the other movable ends of the support arms are positioned in the middle of the steel bracket. Two universal wheels are symmetrically installed at the landing end of the supporting arm, the jacking device is vertically and fixedly installed in the middle of the steel support, the tail end of a telescopic shaft of the jacking device is fixedly connected with a top plate, and the top plate abuts against the lower portion of the movable end of the supporting arm. The torque transmission mechanism is arranged, movement of the supporting arm in the opposite direction of main power is achieved, operation is easy, four universal rolling wheels are additionally installed at the tail end of the supporting arm, manual rapid transfer and position adjustment of the water turbine main shaft buttress can be achieved, and safety risks caused by using a bridge crane for hoisting are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of main shaft transfer, in particular to a main shaft pier for a hydro-generator set. Background Art

[0002] At present, the main shaft of the mainstream hydro-generator sets in China is more than ten meters long and weighs nearly one hundred tons. It is mainly placed on multiple arc-shaped limiting piers arranged axially in parallel. The main structure of the pier is supported by alloy steel and filled with solid wood inside. The total weight of a single pier is about 400 Kg. Its advantages are high strength and strong bearing capacity, while its disadvantages are large volume and heavy mass, making it impossible to be carried by manpower. The adjustment of the placement position can only be achieved by a gantry crane. During the actual adjustment and transfer process, due to site and space limitations, etc., the command personnel need to be close to the pier, resulting in low safety. And if the main shaft needs to be turned over, the gantry crane is occupied, and the pier can only be carried by manpower, which requires a large number of people, a large amount of labor, low efficiency, and is very cumbersome and inconvenient. Content of the Utility Model

[0003] Aiming at the deficiencies in the prior art, the utility model provides a main shaft pier for a hydro-generator set. To achieve the above object, the utility model adopts the following technical solutions:

[0004] A main shaft pier for a hydro-generator set includes rollers, a fixed seat, a support seat and a fixed cover. The rollers are rotatably installed on the bottom surface of the fixed seat. A support column is fixedly connected to the top surface of the fixed seat. A limiting plate protruding from the support column is fixedly connected to the top end of the support column. A U-shaped clamping member matched with the support column is fixedly connected to the side surface of the support seat. Sliding grooves are symmetrically arranged on the clamping member. The fixed cover is slidably connected to the clamping member through the sliding grooves. The fixed cover and the clamping member enclose the support column. The support seat is fixedly connected to a heavy pier.

[0005] Furthermore, a groove matched with the top plate is arranged at the movable end of the support arm.

[0006] Furthermore, rollers are rotatably installed at the movable end of the support arm, and the rollers are always placed on the top plate during the lifting and lowering process of the support arm.

[0007] Furthermore, sleepers are installed on the steel support, and the sleepers are used for placing the main shaft.

[0008] Furthermore, a groove body matched with the steel support is arranged on the sleeper.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] 1. Set up a torque transmission mechanism to achieve the movement of the support arm in the opposite direction of the driving force. The operation is simple. Four universal rollers are installed at the end of the support arm, which can realize the rapid manual transfer and position adjustment of the support pier for the water turbine main shaft, avoiding the safety risks brought by using a bridge crane for hoisting;

[0011] 2. A lifting device is adopted for a single support pier. The lifting device jacks up the support arm so that the universal wheels of the support arm support the entire steel bracket. After the lifting device lowers the support arm, the steel bracket supports the main shaft. The overall transfer of the support pier can be reduced from 4 - 5 people to 1 - 2 people, saving time, reducing labor intensity, saving manpower, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0013] Figure 1 It is a schematic diagram of the support arm structure of an embodiment of the present utility model;

[0014] Figure 2 It is a schematic diagram of the steel bracket structure of an embodiment of the present utility model;

[0015] Figure 3 It is a schematic diagram of the structure for supporting the main shaft of an embodiment of the present utility model.

[0016] In the above drawings: steel bracket 1, support arm 2, landing end 3, movable end 4, jacking device 5, universal wheel 6, top plate 7, groove 8, roller 9, sleeper 10, trough 11, main shaft 12. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following further describes the technical solutions in the present utility model in conjunction with the drawings and embodiments.

[0018] As Figures 1 - 3 shown, an embodiment of the present utility model provides a support pier for the main shaft of a hydro-generator set, including a steel bracket 1, two symmetrically arranged support arms 2, and a jacking device 5. The steel bracket 1 is provided with a recess for placing the main shaft 12. The middle of the support arm 2 is hinged inside the bracket. The landing end 3 of the support arm 2 is located at both ends of the steel bracket 1, and the other movable end 4 of the support arm 2 is located in the middle of the steel bracket 1. Two symmetrically arranged universal wheels 6 are installed on the landing end 3 of the support arm 2. The jacking device 5 is vertically and fixedly installed in the middle of the steel bracket 1. The end of the telescopic shaft of the jacking device 5 is fixedly connected with a top plate 7. The top plate 7 abuts against the lower part of the movable end 4 of the support arm 2. The jacking device 5 adopts a jack, which is convenient to use.

[0019] When in use, as Figure 3As shown, multiple piers are used to support the main shaft 12. By jacking up the jacks inside the piers, the landing end 3 of the support arm 2 moves downward to support the entire pier. The four universal wheels 6 at the landing end 3 enable the movement and position adjustment of the pier on the flat ground. When the pier is transported to a reasonable position, the jack is depressurized, and the landing end 3 of the support arm 2 is unloaded, and the steel support 1 falls to the ground to fix the position of the main shaft 12. After the overall force analysis of the designed pier, it fully meets the strength requirements for bearing the main shaft 12.

[0020] In this embodiment, as Figure 1 shown, a groove 8 matching with the top plate 7 is provided at the movable end 4 of the support arm 2. The lifting device 5 jacks up the top plate 7 to drive the top plate 7 to move up and down at the movable end 4 of the support arm 2, so that the movable end 4 limits the top plate 7, which is convenient for the top plate 7 to jack up the movable end 4 of the support arm 2 and is more convenient to use.

[0021] In this embodiment, as Figure 1 shown, a roller 9 is rotatably installed at the movable end 4 of the support arm 2, and the roller 9 is always placed on the top plate 7 during the lifting and lowering process of the support arm 2. The top plate 7 is used to support the roller 9 to drive the lifting and lowering of the movable end 4 of the support arm 2, so that the roller 9 always rests on the top plate 7 during the lifting and lowering process of the top plate 7, reducing the friction and facilitating the lifting of the support arm 2.

[0022] In this embodiment, as Figure 2 shown, a sleeper 10 is installed on the steel support 1, and the sleeper 10 is used to place the main shaft 12. It can avoid scratching the main shaft 12 and is convenient to use.

[0023] In this embodiment, as Figure 2 shown, a groove 11 matching with the steel support 1 is provided on the sleeper 10. It is convenient to replace the sleeper 10 and fix the sleeper 10.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A main shaft support pier for a hydro-turbine generator set, characterized in that: It includes a steel support, two symmetrically arranged support arms, and a jacking device. The steel support is provided with a recessed portion for placing a main shaft. The middle portion of the support arm is hinged inside the support. The ground-standing ends of the support arms are located at both ends of the steel support. The other movable end of the support arm is located in the middle portion of the steel support. Two symmetrically arranged universal wheels are installed on the ground-standing ends of the support arms. The jacking device is vertically fixedly installed in the middle portion of the steel support. The end of the telescopic shaft of the jacking device is fixedly connected to a top plate, and the top plate is supported on the lower portion of the movable end of the support arm.

2. A main shaft support pier for a hydro-generator set as claimed in claim 1, characterized in that: The movable end of the support arm is provided with a groove matched with the top plate.

3. A main shaft support pier for a hydro-generator set as claimed in claim 2, characterized in that: The movable end of the support arm is rotatably mounted with a roller, and the roller is always placed on the top plate during the lifting process of the support arm.

4. A main shaft support pier for a hydro-generator set as claimed in claim 1, characterized in that: A sleeper is installed on the steel support, and the sleeper is used to place the main shaft.

5. A main shaft support pier for a hydro-generator set as claimed in claim 4, characterized in that: A trough body matched with the steel bracket is provided on the sleeper.

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