CN211029853U

CN211029853U - Device for dismounting and mounting water turbine runner coupling bolt

Info

Publication number: CN211029853U
Application number: CN201922152046.6U
Authority: CN
Inventors: 谢斐; 王新; 姚文俊; 李�权; 吴盼盼; 陈枝鑫; 任超; 刘健
Original assignee: Hubei Qingjiang Hydroelectric Development Co ltd
Current assignee: Hubei Qingjiang Hydroelectric Development Co ltd
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-07-17
Anticipated expiration: 2029-12-03

Abstract

The utility model discloses a device for dismounting a water turbine runner coupling bolt, which belongs to the technical field of hydropower station maintenance and repair, and comprises a bracket, wherein two ends of the bracket are detachably connected with a horizontally rotating support plate, and the center of the bracket is also connected with a plurality of hoisting parts; the utility model provides a device for dismouting hydraulic turbine runner shaft coupling bolt, the utility model discloses utilize intrinsic bridge crane in the power generation factory building, combine the hollow structural feature of generating set main shaft, overcome the difficulty of the narrow and small inconvenient operation of runner centrum inner space through designing specialized tool, on improving demolising of hydraulic turbine main shaft and runner connecting bolt and assembly efficiency's basis, still reduced the potential safety hazard, reduced artifical quantity, reduced the construction degree of difficulty.

Description

Device for dismounting and mounting water turbine runner coupling bolt

Technical Field

The utility model relates to a power station maintenance equipment technical field especially relates to a device for dismouting hydraulic turbine runner shaft coupling bolt.

Background

When the power station is overhauled, the bolts connected with the rotating wheels and the main shaft need to be loosened by using the hydraulic stretcher to finish dismounting, and after the overhaul is finished, the hydraulic stretcher needs to be used again to finish fastening; the hydraulic stretcher has the working principle that an oil pump is utilized to press and stretch a screw rod, so that the screw rod and a nut are loosened, and finally the nut is disassembled or fastened.

However, the scheme has a plurality of disadvantages in the implementation process:

1. the hydraulic stretcher is heavy, the coupling bolts of the water turbine need to be fastened in pairs, the operation of multiple persons is needed, the labor intensity is high, and the working efficiency is low;

2. the hydraulic stretcher is difficult to ensure to be horizontal by manpower, and is difficult to screw into a screw thread, so that the operation difficulty is high;

3. the operation space at the joint of the main shaft and the central body of the rotating wheel is very narrow, and the hydraulic stretcher has the risk of falling off and has potential safety hazards.

SUMMERY OF THE UTILITY MODEL

The utility model aims at not enough among the above-mentioned background art, provide a device that is used for dismouting hydraulic turbine runner shaft coupling bolt to main shaft and runner center body connecting bolt dismouting inefficiency, the big technical problem of potential safety hazard when solving among the prior art hydroelectric set and overhauing.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a device for dismouting hydraulic turbine runner shaft coupling bolt, includes the support, horizontal pivoted backup pad is connected to the dismantlement formula in support both ends, the center department of support still connects a plurality of hoisting parts.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the hydraulic stretcher does not need to be jacked up manually, so that the operation burden of people is reduced, the labor intensity is reduced, and the working efficiency is improved;

2. the four-point hoisting force of the bridge crane is larger, so that the level during hoisting is easier to ensure, and the equipment is prevented from being damaged;

3. the special tool for hoisting the bridge crane does not need a person to directly work under the nut and the hydraulic stretcher, so that the construction safety is ensured;

4. the device is from taking swivel bearing, greatly reduced the degree of difficulty of stretcher screw in screw rod.

The utility model provides a device for dismouting hydraulic turbine runner shaft coupling bolt, the utility model discloses utilize intrinsic bridge crane in the power generation factory building, combine the hollow structural feature of generating set main shaft, overcome the difficulty of the narrow and small inconvenient operation of runner centrum inner space through designing specialized tool, on improving demolising of hydraulic turbine main shaft and runner connecting bolt and assembly efficiency's basis, still reduced the potential safety hazard, reduced artifical quantity, reduced the construction degree of difficulty.

Drawings

Fig. 1 is a perspective view of the structure of the present invention;

FIG. 2 is a schematic view of the present invention in use;

fig. 3 is a top view of the present invention;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

fig. 5 is a schematic view of the present invention.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.

As shown in fig. 1-5, as a preferred embodiment, the present invention provides a device for dismounting a water turbine runner coupling bolt, which comprises a bracket 10, the bracket includes 10 two beams 11 and a plurality of connecting plates 12 fixedly connected between the two beams 11, two ends of the bracket 10 are detachably connected to a supporting plate 13 that rotates horizontally, and a plurality of lifting members 14 are further connected to the center of the bracket 10; the hoisting part 14 is an eyebolt in threaded connection with the bracket 10, or the hoisting part is a lifting lug welded on the bracket; referring to fig. 4, a thrust bearing 16 is fixedly disposed on the bracket 10, and the support plate 13 is screwed onto the thrust bearing 16 through a bolt 17.

In the above scheme, referring to fig. 5, the 20-bit main shaft in the figure, the main shaft of the generator set is a hollow shaft, 30 is a runner center body, and 40 is a steel wire rope, when the device is implemented again, the device for dismounting the water turbine runner coupling bolt of the utility model is obliquely sent into the inner space of the runner center body from the opening at the bottom of the runner center body 30, the device for dismounting the water turbine runner coupling bolt is lifted by putting down the lifting steel wire rope from the main shaft 30 by using a bridge crane in a power plant to be matched with the lifting part 14, and after the device for dismounting the water turbine runner coupling bolt reaches the level in the runner center body, the hydraulic stretcher is sent to the supporting plate 13, the work of stretching the bolt is further completed, and the dismounting or fastening of the bolt is completed; during the disassembly and assembly process.

Preferably, the supporting plate 13 is provided with a notch 18. The notch 18 facilitates the passage of the hydraulic tensioner's pipeline, facilitating quick installation of the hydraulic tensioner.

Preferably, the supporting plate 13 is further provided with a limit bolt hole 19. The limiting bolt hole 19 is used for fixing the hydraulic stretcher 50, and after the hydraulic stretcher 50 is placed on the support plate 13, the hydraulic stretcher 50 can be limited in a bolt inserting mode, so that the hydraulic stretcher 560 is prevented from moving on the support plate 13.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The utility model provides a device for dismouting hydraulic turbine runner shaft coupling bolt which characterized in that: the lifting device comprises a support, wherein two ends of the support are detachably connected with a horizontally rotating support plate, and the center of the support is also connected with a plurality of lifting parts.

2. The apparatus of claim 1, wherein the means for removing the bolts of the turbine runner hub comprises: the hoisting part is an eyebolt in threaded connection with the support.

3. The apparatus of claim 1, wherein the means for removing the bolts of the turbine runner hub comprises: the lifting part is a lifting lug welded on the bracket.

4. A device for dismounting a water turbine runner hub bolt according to any one of claims 1-3, characterized in that: the support is fixedly provided with a thrust bearing, and the support plate is tightly pressed on the thrust bearing through bolt threads.

5. The apparatus of claim 4, wherein the means for removing the bolts of the turbine runner hub comprises: the supporting plate is provided with a notch.

6. The apparatus of claim 4, wherein the means for removing the bolts of the turbine runner hub comprises: and the supporting plate is also provided with a limiting bolt hole.

7. The apparatus for dismounting a water turbine runner hub bolt according to claim 5 or 6, wherein: the support includes two crossbeams and a plurality of connecting plate of fixed connection between two crossbeams.