Device for pushing center of bearing of water-turbine generator set

Abstract

A device for pushing the center of a bearing of a water-turbine generator set comprises a supporting frame, the supporting frame is a U-shaped frame body, buckle installation holes are formed in the two ends of the supporting frame, buckles are installed in the buckle installation holes, jacking bolts are arranged in the buckles in a penetrating mode, and the ends, located in the supporting frame, of the two jacking bolts are arranged in the two ends of the same adjusting stud in a penetrating mode respectively. By the adoption of the structure, the hydraulic generator bearing center pushing operation can be completed by one person, the earlier-stage preparation time of turning operation is shortened, and the turning operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water turbine generator overhaul, in particular to a device for pushing the center of a bearing of a water turbine generator set. Background Art

[0002] During the cranking stage before and after repair, the turbine generator set often invests a lot of manpower and material resources in the centering and tile holding operations of the water guide bearing and the upper guide bearing, which takes a long time to operate. In addition, the centering and tile holding operations may be performed several times during the cranking process, so the entire operation process takes more time. During the cranking process of a certain hydropower station, the centering and tile holding operations of the water guide and upper guide bearings are usually performed in a bolt-nut combination. This operation process often requires the cooperation of two people to complete. Two workers are required to use wrenches to turn the bolts or nuts respectively to increase the bolt-nut combination, thereby pushing the shaft to move. Due to the limited space of the water guide and the upper guide, the centering and tile holding operations are generally performed by multiple groups of people at the same time. Too many operators also lead to narrower space, longer operation time and higher safety risks during operation. In addition, more bolt and nut materials will be consumed while wasting labor and maintenance time. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a device for the center pushing operation of the bearing of a hydro-turbine generator set, which can realize the operation of pushing the center of the bearing of the hydro-turbine generator by a single person, shorten the preparatory time of the turning operation, and improve the turning operation efficiency.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a device for pushing the center of the bearing of a hydro-turbine generator set, including a support frame, the support frame is a U-shaped frame, and buckle mounting holes are provided on both ends of the support frame, buckles are installed in the buckle mounting holes, and top support bolts are passed through the buckles. Two top support bolts are located at one end of the support frame and are respectively passed through the two ends of the same adjusting stud.

[0005] In a preferred solution, a threaded hole is provided on the adjusting stud, and two threads with opposite rotation directions are provided in the threaded hole, and the ends of the two supporting bolts are respectively threadably matched with the two threads.

[0006] In a preferred embodiment, the ring buckle comprises an upper ring member and a lower ring member, and the upper ring member and the lower ring member together form a circular ring buckle, and a hexagonal hole is formed in the middle of the ring buckle.

[0007] In a preferred solution, a hexagonal column section is provided on the portion of the supporting bolt passing through the supporting frame, and the hexagonal column section is provided through the hexagonal hole in the middle of the buckle.

[0008] In the preferred embodiment, a positioning protrusion is respectively provided on the outer circumferential surface of the upper ring member and the lower ring member constituting the ring buckle, and two positioning protrusion mounting grooves are symmetrically provided on the ring buckle mounting hole. The width of the positioning protrusion mounting groove is smaller than the width of the support frame, and the ring buckle is aligned and installed in the ring buckle mounting hole through the positioning protrusion mounting groove.

[0009] The utility model provides a device for pushing the center of a bearing of a hydro-generator set, which has the following beneficial effects by adopting the above structure:

[0010] (1) Compared with the methods and equipment used in traditional center pushing and tile holding operations, it can save a lot of manpower, physical strength and time, and improve the efficiency of center pushing and tile holding operations;

[0011] (2) The traditional mechanical matching method is adopted, mainly through the thread matching to enable the device to complete the telescopic action. In the process of pushing the center and holding the tile, there is no need for multiple people to cooperate, and one person can complete the operation of pushing the center and holding the tile;

[0012] (3) During the operation, the wrench will not hit the shaft, bearing, or shaft wall due to personnel coordination problems or the lack of tightening of bolts or nuts, causing irreversible damage to the entire shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a structural schematic diagram of one end of the support frame of the utility model.

[0016] Figure 3 It is a schematic diagram of the ring buckle structure of the utility model.

[0017] Figure 4 The utility model is a schematic structural diagram of the connection between the adjusting stud and the top support bolt.

[0018] In the figure: support frame 1, top support bolt 2, adjustment stud 3, threaded hole 301, buckle 4, upper ring 401, lower ring 402, hexagonal column section 5, buckle mounting hole 6, positioning protrusion mounting groove 7, positioning protrusion 8, hexagonal hole 9. DETAILED DESCRIPTION

[0019] like Figure 1-4In the invention, a device for pushing the center of a bearing of a hydro-turbine generator set is disclosed, comprising a support frame 1, wherein the support frame 1 is a U-shaped frame, and buckle mounting holes 6 are provided at both ends of the support frame 1, buckles 4 are installed in the buckle mounting holes 6, and supporting bolts 2 are passed through the buckles 4, and one end of the two supporting bolts 2 located in the support frame 1 is respectively passed through the two ends of the same adjusting stud 3.

[0020] In a preferred embodiment, a threaded hole 301 is provided on the adjusting stud 3 , and two threads with opposite rotation directions are provided in the threaded hole 301 , and the ends of the two supporting bolts 2 are threadably matched with the two threads respectively.

[0021] By rotating the adjusting stud 3, the supporting bolts 2 at both ends can perform the same movement and extend or shorten at the same time.

[0022] In a preferred embodiment, the ring buckle 4 includes an upper ring member 401 and a lower ring member 402 , and the upper ring member 401 and the lower ring member 402 together form a circular ring buckle 4 , and a hexagonal hole 9 is formed in the middle of the ring buckle 4 .

[0023] The main function of the buckle 4 is to cooperate with the support frame 1 to prevent the device itself from moving with the adjustment stud 3. At the same time, the buckle 4 is made of two pieces, upper and lower, and can be customized according to actual use. When it is necessary to replace the top support bolts 2 of different sizes, the buckle 4 can be removed from the support frame 1, and then the required top support bolts 2 can be replaced.

[0024] In a preferred solution, a hexagonal column section 5 is provided on the portion of the supporting bolt 2 passing through the supporting frame 1 , and the hexagonal column section 5 is provided through the hexagonal hole 9 in the middle of the ring buckle 4 .

[0025] The top support bolt 2 is a special structural bolt, with a bolt head at the front end, a hexagonal column section 5 in the middle, and a thread at the rear end.

[0026] The two bolts have similar structures but different thread directions. The middle hexagonal column section 5 can cooperate with the hexagonal hole 9 to prevent the bolt from being over-tightened and moving with the adjusting stud 3. The length of the hexagonal column section 5 is also the maximum travel range of the entire tooling.

[0027] In the preferred embodiment, a positioning protrusion 8 is respectively provided on the outer circumferential surface of the upper ring member 401 and the lower ring member 402 constituting the ring buckle 4, and two positioning protrusion mounting grooves 7 are symmetrically provided on the ring buckle mounting hole 6. The width of the positioning protrusion mounting groove 7 is smaller than the width of the support frame 1, and the ring buckle 4 is aligned and installed in the ring buckle mounting hole 6 through the positioning protrusion mounting groove 7.

[0028] In the above scheme, the support frame 1 connects the entire device to make it an integral whole. At the same time, the support frame 1 has a certain deadweight, which can prevent the device as a whole from rotating with the adjusting stud 3 due to the reverse thrust of the shaft in a small range. If the reverse thrust of the shaft on the device itself is too large and causes the device itself to rotate with the adjusting stud 3, at this time, an adjustable wrench or a pipe clamp can be used to clamp the upper crossbeam of the support frame 1 to stop the device from moving with the adjusting stud 3, so that the top support bolt 2 can be normally extended and retracted without being affected by the reverse thrust of the shaft.

Claims

1. A device for pushing the center of a bearing of a hydro-turbine generator set, comprising a support frame (1), characterized in that: The support frame (1) is a U-shaped frame body, and buckle mounting holes (6) are provided at both ends of the support frame (1). Buckles (4) are installed in the buckle mounting holes (6), and supporting bolts (2) are passed through the buckles (4). One end of the two supporting bolts (2) located in the support frame (1) is respectively passed through the two ends of the same adjusting stud (3).

2. The device for pushing the center of a bearing of a hydro-generator set according to claim 1 is characterized in that: The adjusting stud (3) is provided with a threaded hole (301), and two threads with opposite rotation directions are provided in the threaded hole (301), and the ends of the two supporting bolts (2) are respectively threadably matched with the two threads.

3. The device for pushing the center of a bearing of a hydro-generator set according to claim 1 is characterized in that: The ring buckle (4) comprises an upper ring member (401) and a lower ring member (402), wherein the upper ring member (401) and the lower ring member (402) together form a circular ring buckle (4), and a hexagonal hole (9) is formed in the middle of the ring buckle (4).

4. The device for pushing the center of a bearing of a hydro-generator set according to claim 3 is characterized in that: A hexagonal column section (5) is provided on the portion of the supporting bolt (2) that passes through the supporting frame (1), and the hexagonal column section (5) is arranged through a hexagonal hole (9) in the middle of the buckle (4).

5. The device for pushing the center of the bearing of a hydro-generator set according to claim 3 is characterized in that: A positioning protrusion (8) is respectively provided on the outer circumferential surface of the upper ring member (401) and the lower ring member (402) constituting the ring buckle (4), and two positioning protrusion mounting grooves (7) are symmetrically provided on the ring buckle mounting hole (6), the width of the positioning protrusion mounting grooves (7) being smaller than the width of the support frame (1), and the ring buckle (4) is aligned and mounted in the ring buckle mounting hole (6) through the positioning protrusion mounting grooves (7).

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