CN218595862U

CN218595862U - Large container ship shaft generator rotor hoisting device

Info

Publication number: CN218595862U
Application number: CN202222988365.2U
Authority: CN
Inventors: 王立平; 谢磊; 单仁彪
Original assignee: Jiangsu Yangzi Xinfu Shipbuilding Co Ltd
Current assignee: Jiangsu Yangzi Xinfu Shipbuilding Co Ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-03-10
Anticipated expiration: 2032-11-10

Abstract

The utility model relates to a shipbuilding field provides large-scale container ship axle area generator rotor hoisting accessory. Comprises a front end lifting appliance, a rear end lifting appliance, a sling and lifting equipment. The front end lifting appliance comprises a front flange plate, a lifting appliance mounting seat, a rotary seat and a front lifting ring, wherein the rotary seat is mounted in the lifting appliance mounting seat and freely rotates around the axis of the rotary seat. The position adjustment between the rotor coil and the rotor coil in the installation process is facilitated, and the damage to screw holes and other parts is avoided. The rear end lifting appliance is stably connected with the rear flange in a mode that a plurality of screws are matched with the rib plates, so that the connection strength is increased, and the rear end lifting appliance has enough strength and cannot break when being adjusted from a vertical state to a horizontal state. The lifting appliance can meet the lifting requirement of the rotor shaft of the ultra-large marine shaft generator, ensures that the connecting part of the rotor shaft and the rotor shaft cannot be damaged in the lifting process, and ensures that subsequent mounting precision cannot be influenced.

Description

Large container ship shaft generator rotor hoisting device

Technical Field

The utility model relates to a shipbuilding field, concretely relates to large container ship axle area generator rotor hoisting accessory.

Background

In the construction of ships, the hoisting of ship sections and equipment is one of the most important processes. The hoisting capacity and the design capacity of the lifting appliance are important indexes for measuring the building capacity of the ship enterprise.

The shaft generator used on 24000TEU large container ship has electric power of 4300kW, wherein the mass of the rotor is 35 tons, the mass of the rotor shaft is 45 tons, the total mass after assembly is 80 tons, and the rotor and the stator of the shaft generator are installed and the installed rotor shaft enters the cabin and the like and need to be hoisted. When the generator is installed, the rotor coil of the generator is placed on the fixed supporting piece, the rotor shaft is vertically hoisted and inserted into the rotor coil, the rotor coil is installed, and the rotor shaft is horizontally hoisted and placed after the installation is completed. For hoisting the rotor of the small-sized shaft generator, generally, a lifting lug on the rotor is directly used for installing a shackle, the rotor is directly hoisted to be connected with the rotor shaft, and then the rotor and the stator are installed outside a ship to integrally hoist the generator and the rotor. However, for a large shaft generator, the rotor has a large mass, and direct hoisting can damage the body structure of the rotor, so that the flange holes between the rotor shaft and the rotor are staggered, and the installation accuracy after the rotor enters the cabin is affected.

Patent CN108189962A discloses a method for centering a propeller shaft system with a shaft generator, which is disclosed that a plurality of straps are used to connect with intermediate shafts of the shaft generator and other parts in the centering process, the shaft generator is moved by the straps and a hoisting device, the straps can only realize the horizontal movement of the shaft generator, and when the hoisting actions such as the installation of a rotor and a stator are involved, the straps can not realize the hoisting mode.

Disclosure of Invention

In order to satisfy the lifting requirement of the rotor of the large-scale shaft generator of the large-scale container ship in the installation process, the utility model aims to provide a rotor lifting device of the large-scale container ship shaft generator, which can effectively protect the rotor shaft of the shaft generator.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

the hoisting device for the shaft generator rotor of the large container ship comprises a front end hoisting tool, a rear end hoisting tool, a hoisting cable and hoisting equipment, wherein the front end hoisting tool and the rear end hoisting tool are respectively installed at two ends of a shaft generator rotor shaft, and are respectively connected with the corresponding hoisting equipment through the hoisting cable; the rear end lifting appliance comprises a rear flange plate, a rear lifting lug and a rear lifting ring, wherein a circle of connecting hole is formed in the edge, close to the outer side, of the rear flange plate, the connecting hole corresponds to the connecting hole in the end face of the rear end of the shaft-driven generator rotor and is connected through a threaded piece, the rear lifting lug is a plate-shaped lifting lug, the lifting lug is installed in the center of the outer side face of the rear flange plate, a plurality of screw holes are machined in the bottom face, matched with the flange, of the rear lifting lug along the length direction of the bottom face, a plurality of counter bores corresponding to the screw holes in the rear lifting lug are formed in the rear flange plate, and the rear lifting lug is fixedly installed on the rear flange plate through screws and the counter bores; the top center of back lug is equipped with the lewis hole, back rings pass through screw and lewis hole and install in back lug.

Furthermore, the rotating seat is coaxially installed in the hanger installation seat, the outer side surface of the rotating seat is a conical surface matched with the inner side surface of the hanger installation seat, and a ball or a roller is installed between the outer side surface of the rotating seat and the inner side surface of the hanger installation seat.

Furthermore, a plurality of rib plates which are uniformly distributed along the length direction of the rear lifting lug are respectively arranged between the two side surfaces of the rear lifting lug and the rear flange plate.

Furthermore, the connecting holes in the front flange plate and the rear flange plate are waist-shaped holes, and the stroke direction of the waist-shaped holes points to the circle center of the corresponding flange.

Further, the back lug includes ring portion and installation department, and the both ends of ring portion extend parallel installation department, and parallel installation department is equipped with the round hole, the round hole corresponds and is connected with the screw thread spare with the lewis hole of back lug.

Further, the screw thread part comprises a stud and a hexagon nut arranged at two ends of the stud.

Further, a nylon space ring is sleeved on the shaft section of the stud matched with the connecting holes on the end faces of the two sides of the shaft with the generator rotor; and a gasket is arranged between the hexagonal nut and the end face of the side of the shaft with the generator rotor.

After taking above technical scheme, the beneficial effects of the utility model are that:

this technical scheme has fully considered the axle and has taken each gesture of generator rotor shaft in the installation, utilizes the rotor shaft both ends to be equipped with the characteristics of flange face, installs the both ends at the rotor shaft with front end hoist and rear end hoist through flange joint's mode to through packing ring and nylon space ring to the flange face and the screw protection at rotor shaft both ends, avoid the hoist and mount in-process to take place the damage and influence subsequent installation accuracy.

The rotary seat of the front-end lifting appliance can realize free rotation of the lifting appliance mounting seat through the conical structural design, the rotor shaft can be freely and rotatably adjusted in the air in the process of vertically lifting the rotor shaft, the position adjustment between the rotor shaft and a rotor coil in the installation process is facilitated, and meanwhile, the damage to screw holes and other parts caused by shearing force generated on studs at each connecting flange when a corresponding steel wire rope rotates after rotation is avoided.

The rear end lifting appliance is stably connected with the rear flange in a mode that a plurality of screws are matched with the rib plates, so that the connection strength is increased, the rear end lifting appliance has enough strength when being adjusted from a vertical state to a horizontal state, and the problems of breakage and the like are avoided.

The lifting appliance can meet the lifting requirement of the rotor shaft of the ultra-large marine shaft generator, ensures that the connecting part of the rotor shaft and the rotor shaft cannot be damaged in the lifting process, and ensures that subsequent mounting precision cannot be influenced.

Drawings

Fig. 1 is an installation schematic diagram of the present invention.

Fig. 2 is a schematic structural diagram of a front end spreader.

Fig. 3 is a cross-sectional view of a front end spreader.

Fig. 4 is a schematic structural view of a rear end spreader.

Fig. 5 is a cross-sectional view of a rear end spreader.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings:

as shown in figure 1, the hoisting device for the generator rotor on the large container ship shaft consists of a front end hoisting tool 1, a rear end hoisting tool 2, a sling and hoisting equipment. The hoisting equipment is a crane or a crane on a construction site, the front end sling 1 and the rear end sling 2 are respectively arranged at two ends of the shaft generator rotor shaft 3, and the hoisting equipment is hoisted by the sling, the front end sling 1 and the rear end sling 3.

As shown in fig. 2, the front end hanger 1 is composed of four parts, namely a front flange plate 11, a hanger mounting base 12, a rotating base 13 and a front hanging ring 14. The front flange 11 and the bolt holes on the front flange are matched with a front end face flange and bolt holes of the rotor shaft 3, and are connected through a stud 15 and a hexagon nut 16 to fix the front end lifting appliance 1 on the rotor shaft 3. The front end lifting appliance 1 is fixed between flange faces matched with the rotor shaft 3 and provided with a nylon pad to prevent abrasion. The bolt holes in the front flange plate 11 are kidney-shaped holes 17, and the adjustment stroke direction of the kidney-shaped holes 17 points to the circle center of the front flange plate 11, so that the adjustment during installation is convenient, and the damage of the stud 15 to the bolt holes in the front flange surface of the rotor shaft 3 caused by the error during bolt hole matching during installation is avoided. The nylon spacer ring 4 is sleeved on the shaft section of the stud 15 matched with the bolt hole of the front end face flange of the rotor shaft 3, so that abrasion caused by contact between the stud and the bolt hole is avoided. And hexagonal nuts 16 are arranged at two ends of the stud 15 for fixation, and a copper gasket 5 or a rubber gasket is arranged in front of the hexagonal nuts 16 and the front end face flange of the rotor shaft.

The middle part of preceding ring flange 11 is equipped with the round mounting hole, and hoist mount pad 12 fixed mounting is at the center of preceding ring flange 11 and through the cooperation fixed connection of screw with the mounting hole, and roating seat 13 rotates and installs in hoist mount pad 12. As shown in fig. 3, the rotation is realized by: the rotation portion of roating seat 13 is the toper, is equipped with corresponding toper cavity in the hoist mount pad 12, installs roller 18 or ball between the lateral surface of roating seat 13 and the medial surface in hoist mount pad 12 toper cavity, forms the structure of similar bearing for roating seat 13 can just can not break away from out hoist mount pad 12 around the axis free rotation of self in hoist mount pad 12. A lifting lug 19 extends upwards from the center of the top of the rotating seat 13, a lifting hole is formed in the lifting lug, and the front lifting ring 14 is installed on the rotating seat 13 through a bolt and the lifting hole in a matched mode. When vertically hoisting rotor shaft 3, front end hoist 1 is connected with hoisting accessory through the hoist cable, when installing rotor shaft 3 and rotor coil, need rotate rotor shaft 3 for the flange in its middle part realizes the location with the inside flange of coil, because front end hoist 1 can rotate, avoids in the rotation process hoist cable because of being rotated the back because of taking place to kick-back, leads to the bolt hole of middle part flange and coil flange to bump with the bolt department and lead to shearing the damage.

As shown in fig. 4-5, the rear end hanger 2 is composed of a rear flange 21, a rear lifting lug 22 and a rear lifting ring 23, the rear flange 21 is flange-connected with the rear end face of the shaft generator rotor shaft 3, and the connection mode is the same as that of the front flange 11. The rear lifting lug 22 is a plate-shaped lifting lug and is in an isosceles right triangle shape, the rear lifting lug is fixedly mounted at the center of the outer side surface of the rear flange 21 through a screw 24, six screw holes are uniformly distributed on the bottom surface of the rear lifting lug 22 matched with the rear flange 21 along the length direction of the bottom surface, six counter bores are formed in the rear flange 21, and the rear lifting lug 22 is fixedly mounted on the rear flange 21 through the screw and the counter bore in a matched manner; in order to increase the strength of the rear lifting lug, three rib plates 25 which are uniformly distributed along the length direction of the rear lifting lug 22 are respectively arranged between two side surfaces of the rear lifting lug and the rear flange plate 21, and the rib plates 25 are in a right-angled ladder shape and are welded to the rear flange plate 21 and the rear lifting lug 22 at the same time. A lifting hole is formed in the center of the top of the rear lifting lug 22, and the rear lifting lug 23 is mounted on the rear lifting lug 22 through a bolt and the lifting hole in a matching manner. The front hanging ring 14 and the rear hanging ring 23 are both composed of an open ring 231 and parallel mounting portions 232 extending from two open ends of the ring 231. The mounting portion 232 is provided with a connecting hole corresponding to the hanging hole of the corresponding hanging lug and is connected in series by a bolt to mount the hanging ring on the hanging lug. The hoisting equipment is connected with the hoisting ring through a hoisting rope.

Claims

1. The hoisting device for the shaft generator rotor of the large container ship comprises a front end hoisting tool, a rear end hoisting tool, a hoisting cable and hoisting equipment, wherein the front end hoisting tool and the rear end hoisting tool are respectively installed at two ends of a shaft generator rotor shaft and are respectively connected with the corresponding hoisting equipment through the hoisting cable; the rear end lifting appliance comprises a rear flange plate, a rear lifting lug and a rear lifting ring, wherein a circle of connecting hole is formed in the edge, close to the outer side, of the rear flange plate, the connecting hole corresponds to the connecting hole in the end face of the rear end of the shaft-driven generator rotor and is connected through a threaded piece, the rear lifting lug is a plate-shaped lifting lug, the lifting lug is installed in the center of the outer side face of the rear flange plate, a plurality of screw holes are machined in the bottom face, matched with the rear flange plate, of the rear lifting lug along the length direction of the rear lifting lug, a plurality of counter bores corresponding to the screw holes in the rear lifting lug are formed in the rear flange plate, and the rear lifting lug is fixedly installed on the rear flange plate through screws and the counter bores; the top center of back lug is equipped with the lewis hole, back rings pass through screw and lewis hole and install in back lug.

2. The large container ship shaft generator rotor hoisting device of claim 1, wherein the rotating base is coaxially installed in the hanger installation base, the outer side surface of the rotating base is a conical surface matched with the inner side surface of the hanger installation base, and a ball or a roller is installed between the outer side surface of the rotating base and the inner side surface of the hanger installation base.

3. The large container ship shaft generator rotor hoisting device according to claim 1, wherein a plurality of rib plates are respectively arranged between two side surfaces of the rear lifting lug and the rear flange plate and are uniformly distributed along the length direction of the rear lifting lug.

4. The large container ship shaft generator rotor hoisting device of claim 1, wherein the connection holes on the front flange and the rear flange are kidney-shaped holes, and the stroke direction of the kidney-shaped holes points to the center of the corresponding flange.

5. The large container ship shaft generator rotor hoisting device of claim 1, wherein the rear lifting lug comprises a ring part and a mounting part, the two ends of the ring part extend out of the parallel mounting part, the parallel mounting part is provided with a round hole, and the round hole corresponds to the lifting hole of the rear lifting lug and is connected with the lifting hole by a threaded piece.

6. The large container ship axle generator rotor hoisting device of claim 1, wherein the threaded member comprises a stud and a hexagon nut mounted at both ends of the stud.

7. The large container ship shaft generator rotor hoisting device of claim 6, wherein the shaft section where the stud is matched with the connecting holes on the side end faces of both sides of the shaft generator rotor is sleeved with a nylon spacer ring; and a gasket is arranged between the hexagonal nut and the end faces of the two sides of the shaft generator rotor.