Large hydro-generator magnetic pole hoisting tool

Abstract

The utility model discloses a large -scale water turbine generator magnetic pole hoist frock, it is in solving the problem that the existing tool is not applicable to damping ring is located above magnetic pole pressing plate and the turn -to -turn insulation protruding coil copper bar structure. It includes hoisting beam, hoisting board, bottom plate, and hoisting board and bottom plate top respectively are equipped with main screw rod and vice screw rod for connecting magnetic pole top threaded hole, and hoisting board and bottom plate are pasted magnetic pole both ends, and hoisting board is equipped with lifting lug. Main vice screw rod is collinear and connects magnetic pole top middle, still is equipped with nut, thickening cover, turn over boots etc. The frock can avoid damping ring, avoid damaging protruding turn -to -turn insulation, realize stable hoisting, and is applicable to the hoisting operation of specific structure magnetic pole.

Description

Technical Field

[0001] This utility model relates to the field of magnetic pole hoisting fixture technology, and in particular to a magnetic pole hoisting fixture for a large hydro generator. Background Technology

[0002] There are two main types of magnetic pole hoisting: one is to directly hoist the magnetic pole using slings; the other is to hoist the magnetic pole using magnetic pole hoisting tools.

[0003] When using slings to lift magnetic poles directly, a protective pad is usually placed between the slings and the magnetic pole coil. However, this method is not suitable for structures where the inter-turn insulation of the magnetic pole coil protrudes from the coil's copper busbar.

[0004] There are many types of existing magnetic pole hoisting tools. For example, Chinese patent CN204517588U discloses a hoisting tool for the rotor magnetic poles of a generator motor. This type of magnetic pole hoisting tool is not suitable for structures where the damping ring is located above the magnetic pole pressure plate. It is mainly hoisted through the lifting holes set on the magnetic pole pressure plate, and is not suitable for structures where the damping ring is located above the magnetic pole pressure plate.

[0005] Therefore, a new type of magnetic pole hoisting tool is designed for a structure in which the damping ring is located above the magnetic pole pressure plate and the inter-turn insulation protrudes from the coil copper busbar. Summary of the Invention

[0006] The technical problem to be solved by this utility model is that existing magnetic pole hoisting tools are not suitable for structures where the damping ring is located above the magnetic pole pressure plate.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a large hydro-generator magnetic pole hoisting fixture, including a lifting beam and a lifting plate and a base plate vertically fixedly connected to both ends of the lifting beam. Lifting lugs are fixed on the side wall of the lifting plate away from the lifting beam. The top ends of the lifting plate and the base plate are respectively vertically fixedly connected to a main screw and a secondary screw for connecting the threaded holes at both ends of the top of the magnetic pole. The opposite side walls of the lifting plate and the base plate are respectively attached to both ends of the magnetic pole.

[0008] Preferably, both the main screw and the auxiliary screw are threaded with nuts, and the two nuts are respectively attached to the outer side wall of the lifting plate and the base plate at their respective ends.

[0009] Preferably, both the main screw and the auxiliary screw are fitted with thickened sleeves, one end of which is in contact with the magnetic pole, and the other end is in contact with the side wall of the lifting plate or the bottom plate, respectively.

[0010] Preferably, a turning boot is fixedly connected to the bottom of the outer side wall of the lifting beam, and the movable end of the turning boot is provided with an arc-shaped rotation transition structure.

[0011] Preferably, the turning boot has a plate-like structure, and the turning boot is distributed on both sides of the bottom plate.

[0012] Preferably, a rib plate connects the two turning boots, the rib plate being set perpendicular to the turning boots and perpendicular to the bottom plate.

[0013] Preferably, the bottom of the lifting beam is fixedly connected to an ear plate, and the ear plate has a through hole that matches the threaded hole on the side wall of the magnetic pole pressure plate at the bottom of the magnetic pole, and the ear plate and the magnetic pole pressure plate are fixedly connected by bolts.

[0014] Preferably, the bottom surface of the magnetic pole pressure plate and the bottom surface of the turning boot are located on the same plane.

[0015] Preferably, a connecting box is fixedly connected to the end of the lifting beam, and the connecting box is connected to the lifting plate or the base plate. The connecting bolts for fixing the connecting box are distributed at both ends of the connecting box.

[0016] Preferably, the main screw and the auxiliary screw are located on the same axis, and both the main screw and the auxiliary screw are connected to the middle position at the top of the magnetic pole.

[0017] This utility model provides a magnetic pole hoisting tool for a large hydro-generator, which has the following beneficial effects.

[0018] 1. The design of connecting the main screw and auxiliary screw to the threaded hole at the top of the magnetic pole, and having the lifting plate and base plate fit closely to both ends of the magnetic pole, cleverly avoids the damping ring located above the magnetic pole pressure plate. This design is specifically for structures where the damping ring is located above the magnetic pole pressure plate, achieving stable lifting and overcoming the limitations of existing tools for this type of structure. It also avoids the squeezing and wear that may be caused to the protruding inter-turn insulation on the magnetic pole coil when lifting directly with slings, and ensures the integrity of the coil insulation without the need for additional protective pads.

[0019] 2. The main screw and auxiliary screw are collinear and connected to the middle of the top of the magnetic pole. They are fixed together with the lug plate and the magnetic pole pressure plate by bolts, forming a multi-point force balance structure, which effectively prevents the magnetic pole from tilting and swaying during hoisting. The thickened sleeve enhances the tightness of the connection between the screw and the magnetic pole, reduces thread deformation, and avoids pressure damage to the magnetic pole surface, further reducing the risk of damage to the protruding parts of the coil inter-turn insulation. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a front view of the embodiment of the present invention when arranged horizontally.

[0022] Figure 2 This is a side view of the present invention when arranged horizontally according to an embodiment.

[0023] In the diagram: 1. Lifting plate; 2. Base plate; 3. Lifting beam; 4. Main screw; 5. Auxiliary screw; 6. Connecting box; 7. Connecting bolt; 8. Lifting lug; 9. Ear plate; 10. Magnetic pole pressure plate; 11. Magnetic pole; 12. Turning shoe. Detailed Implementation

[0024] like Figure 1 and Figure 2 As shown, this utility model provides a large-scale hydro-generator magnetic pole hoisting fixture, including a lifting beam 3 and a lifting plate 1 and a base plate 2 vertically fixedly connected to both ends of the lifting beam 3. Lifting lugs 8 are fixed on the side wall of the lifting plate 1 away from the lifting beam 3. The top ends of the lifting plate 1 and the base plate 2 are respectively vertically fixedly connected to a main screw 4 and a secondary screw 5 for connecting the threaded holes at both ends of the top of the magnetic pole 11. The opposite side walls of the lifting plate 1 and the base plate 2 are respectively attached to both ends of the magnetic pole 11.

[0025] Two lifting beams 3 are connected between the lifting plate 1 and the base plate 2 to form a frame-shaped connection structure. When lifting the magnetic pole 11, the lifting tool is fitted onto the magnetic pole 11, and the threaded hole at the top of the magnetic pole 11 is aligned with the mounting holes of the main screw 4 and the auxiliary screw 5. The main screw 4 is inserted into the lifting plate 1 and connected through the threaded hole at the top of the magnetic pole 11. The auxiliary screw 5 is inserted into the base plate 2 and connected through the threaded hole at the other end of the top of the magnetic pole 11. After connecting the magnetic pole 11 with the main screw 4 and the auxiliary screw 5, the lifting tool and the magnetic pole 11 fixedly connected to the lifting tool are lifted and transported through the lifting lug 8.

[0026] like Figure 1 As shown. Both the main screw 4 and the auxiliary screw 5 are threaded with nuts, which respectively fit against the outer side walls of the lifting plate 1 and the base plate 2 at their respective ends. After the main screw 4 and the auxiliary screw 5 are fixedly connected to the magnetic pole 11, the magnetic pole 11 can be limited along its length by the cooperation of the two nuts with the lifting plate 1 and the base plate 2 respectively.

[0027] In a preferred embodiment of this utility model, both the main screw 4 and the auxiliary screw 5 are fitted with thickened sleeves. One end of each thickened sleeve is in contact with the magnetic pole 11, and the other end is in contact with the side wall of the lifting plate 1 or the base plate 2, respectively. The thickened sleeves serve as pads to limit the swing of the magnetic pole 11, preventing swaying between the magnetic pole 11 and the lifting tool.

[0028] like Figure 1 As shown, to facilitate the adjustment of the lifting tool to a vertical position for hoisting, a turning shoe 12 is fixedly connected to the bottom of the outer wall of the lifting beam 2. The movable end of the turning shoe 12 is provided with an arc-shaped rotation transition structure. After the lifting strap is connected to the lifting lug 8, during the lifting process, the bottom end of the lifting tool rotates along the edge of the rotation transition structure at the movable end of the turning shoe 12, which can smoothly rotate the lifting tool to a vertical position.

[0029] As a preferred embodiment of this utility model, the turning boot 12 has a plate-like structure and is distributed on both sides of the base plate 2. By providing turning boots 12 on both sides of the base plate 2, the two turning boots 12 can provide stable support for the lifting tool when turning it over.

[0030] In a preferred embodiment of this utility model, to improve the stability of the connection between the two turning boots 12 and prevent bending of the turning boots 12 due to displacement during the turning process, a rib plate is connected between the two turning boots 12. The rib plate is set perpendicular to the turning boots 12 and perpendicular to the bottom plate 2.

[0031] like Figure 1 and Figure 2 As shown, to further increase the stability of the connection between the lifting tool and the magnetic pole 11, a lug plate 9 is fixedly connected to the bottom of the lifting beam 3. The lug plate 9 has a through hole that matches the threaded hole on the side wall of the magnetic pole pressure plate 10 at the bottom of the magnetic pole 11, and the lug plate 9 and the magnetic pole pressure plate 10 are fixedly connected by bolts. In addition to the connection between the main screw 4 and the auxiliary screw 5 and the top of the magnetic pole 11, a lug plate 9 is added. The lug plate 9 is fixedly connected to both sides of the bottom of the magnetic pole 11 by bolts, thereby achieving a stable connection between the lifting tool and the entire magnetic pole 11.

[0032] like Figure 1 As shown, to ensure the magnetic pole pressure plate is horizontal when connected to the lifting tool, and to avoid localized pressure, the bottom surface of the magnetic pole pressure plate 10 and the bottom surface of the turning boot 12 are on the same plane.

[0033] like Figure 1 and Figure 2 As shown. A connecting box 6 is fixedly connected to the end of the lifting beam 3, and the lifting plate 1 or the base plate 2 is connected through the connecting box 6. Connecting bolts 7 are distributed at both ends of the connecting box 6 for fixing. The connecting box 6 increases the connection area between the lifting beam 3 and the lifting plate 1 or the base plate 2, and the bolts enable a detachable connection.

[0034] like Figure 1 As shown. The main screw 4 and the auxiliary screw 5 are located on the same axis, and both the main screw 4 and the auxiliary screw 5 are connected to the middle position of the top of the magnetic pole 11. The ear plate 9 is fixedly connected to both sides of the bottom of the magnetic pole 11, and the main screw 4 and the auxiliary screw 5 are connected to the center of the top of the magnetic pole 11, which effectively limits the magnetic pole 11 and prevents the magnetic pole 11 from shifting during the lifting process.

Claims

1. A large hydro-generator magnetic pole hoisting fixture, characterized in that: It includes a lifting beam (3) and a lifting plate (1) and a base plate (2) that are vertically fixed to both ends of the lifting beam (3). The lifting plate (1) has a lifting lug (8) fixed on the side wall away from the lifting beam (3). The top of the lifting plate (1) and the base plate (2) are respectively vertically fixed with a main screw (4) and a secondary screw (5) for connecting the threaded holes at both ends of the top of the magnetic pole (11). The opposite side walls of the lifting plate (1) and the base plate (2) are respectively attached to the two ends of the magnetic pole (11).

2. The large hydro-generator magnetic pole hoisting fixture as described in claim 1, characterized in that: Both the main screw (4) and the auxiliary screw (5) are threaded with nuts, and the two nuts are respectively attached to the outer side wall of the lifting plate (1) and the bottom plate (2).

3. The large hydro-generator magnetic pole hoisting fixture as described in claim 2, characterized in that: Both the main screw (4) and the auxiliary screw (5) are fitted with thickened sleeves. One end of the thickened sleeve is attached to the magnetic pole (11), and the other end is attached to the side wall of the lifting plate (1) or the bottom plate (2).

4. The large hydro-generator magnetic pole hoisting fixture as described in claim 1, characterized in that: The bottom of the outer wall of the lifting beam (3) is fixedly connected to a turning boot (12), and the movable end of the turning boot (12) is provided with an arc-shaped rotation transition structure.

5. The large hydro-generator magnetic pole hoisting fixture as described in claim 4, characterized in that: The turning boot (12) has a plate-like structure and is distributed on both sides of the base plate (2).

6. The large hydro-generator magnetic pole hoisting fixture as described in claim 5, characterized in that: A rib is connected between the two turning boots (12), the rib is set perpendicular to the turning boots (12), and the rib is perpendicular to the bottom plate (2).

7. The large hydro-generator magnetic pole hoisting fixture as described in claim 6, characterized in that: The bottom of the lifting beam (3) is fixedly connected to an ear plate (9), and the ear plate (9) has a through hole that matches the threaded hole on the side wall of the magnetic pole pressure plate (10) at the bottom of the magnetic pole (11), and the ear plate (9) and the magnetic pole pressure plate (10) are fixedly connected by bolts.

8. The large hydro-generator magnetic pole hoisting fixture as described in claim 7, characterized in that: The bottom surface of the magnetic pole pressure plate (10) and the bottom surface of the turning boot (12) are on the same plane.

9. The large hydro-generator magnetic pole hoisting fixture as described in claim 1, characterized in that: The end of the lifting beam (3) is fixedly connected to a connecting box (6), and is connected to the lifting plate (1) or the base plate (2) through the connecting box (6). The connecting bolts (7) for fixing the connecting box (6) are distributed at both ends of the connecting box (6).

10. The large hydro-generator magnetic pole hoisting fixture as described in claim 1, characterized in that: The main screw (4) and the auxiliary screw (5) are located on the same axis, and both the main screw (4) and the auxiliary screw (5) are connected to the middle position at the top of the magnetic pole (11).

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