CN217867686U

CN217867686U - Stator core section hoisting accessory

Info

Publication number: CN217867686U
Application number: CN202221777403.3U
Authority: CN
Inventors: 廖邦敏; 张祺; 杨涛; 陈文平
Original assignee: Dongfang Electric Machinery Co Ltd DEC
Current assignee: Dongfang Electric Machinery Co Ltd DEC
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2022-11-22
Anticipated expiration: 2032-07-11

Abstract

The utility model discloses a stator core section hoisting accessory relates to turbo generator technical field, including lifting by crane board and a plurality of mechanism of lifting by crane, the mechanism of lifting by crane includes guide rail, lifting hook and sharp executive component, the guide rail is along lifting by crane the radial setting of board, but lifting hook passes through slider sliding connection in guide rail, lifting hook includes outer lifting hook and interior lifting hook, sharp executive component locates between outer lifting hook and the interior lifting hook to act on outer lifting hook and interior lifting hook, outer lifting hook is close to the lifting by crane board outer lane, interior lifting hook is close to the lifting by crane board inner circle, and is a plurality of lifting by crane the mechanism along circumference interval arrangement in lifting by crane the board bottom surface. The stator core section hoisting device provided by the utility model has the advantages of short clamping time and convenient clamping process; the top supporting legs with adjustable heights are arranged to adapt to iron cores with different heights.

Description

Stator core section hoisting accessory

Technical Field

The utility model relates to a turbo generator technical field, concretely relates to stator core section hoisting accessory.

Background

The stator core of the steam turbine generator is externally overlapped in a segmented mode, so that the assembly efficiency of the stator core can be improved, and the manufacturing period of the steam turbine generator is shortened. The stator core stacking can be synchronously carried out by multi-station stacking outside the segments, and then a plurality of segment cores are overlapped and assembled to complete the assembly of the whole stator core. The lifting of the segmented outer stacked iron core requires that the lifting process cannot generate large deformation, the lifting tool is fast to assemble and disassemble, and the assembly quality of the stator iron core is ensured.

The lifting of the stator external laminated iron core section is related to the key process of the stator iron core laminating efficiency and quality. At present, the lifting of stator external laminated iron core section is usually carried out by using a penetrating screw hole on an iron core segment, such as patent name: an iron core section hoisting structure, patent number: CN 103552910B's utility model patent, this utility model utilize the punching screw hole on the stator core towards the piece to lift by crane, have hoist and mount frock installation rapidly, characteristics such as hoist and mount are efficient. But the mode is not suitable for the machine type with punching sheets without penetrating screw holes.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the existing problems, the utility model provides a stator core section hoisting device, which drives an inner lifting hook and an outer lifting hook to be clamped on the inner circle and the outer circle of a core in a matching way for hoisting through a linear actuating element, and has the advantages of short clamping time and convenient clamping process; the top supporting legs with adjustable heights are arranged to adapt to iron cores with different heights, and the iron core adjusting device has wide application prospect.

The utility model adopts the technical scheme as follows:

the utility model provides a stator core section hoisting accessory, includes hoisting plate and a plurality of hoisting mechanism, hoisting mechanism includes the guide rail, lifting hook and sharp executive component, the guide rail is along hoisting plate radial setting, but lifting hook passes through slider sliding connection in guide rail, lifting hook is including outer lifting hook and interior lifting hook, sharp executive component locates between outer lifting hook and the interior lifting hook to act on outer lifting hook and interior lifting hook, outer lifting hook is close to the hoisting plate outer lane, interior lifting hook is close to and lifts by crane the board inner circle, and is a plurality of hoisting mechanism arranges in hoisting plate bottom surface along the circumference interval.

Furthermore, the number of the hoisting mechanisms and the number of the iron core punching sheets are in a multiple relation, a groove part is formed between every two adjacent iron core punching sheets, the groove part comprises an outer groove matched with an outer ring of the iron core and an inner groove matched with an inner ring of the iron core, the outer hoisting hook can be matched with the outer groove, the inner hoisting hook can be matched with the inner groove, and more than two hoisting mechanisms can be matched with each other to limit the iron core.

Furthermore, the bottom end of the lifting hook extends to the horizontal direction to form a limiting convex block which can be matched with a gap on the bottom surface of the iron core, and the limiting convex blocks of the inner lifting hook and the outer lifting hook are arranged oppositely.

Due to the adoption of the technical scheme, the bottom layer of the iron core is provided with the ventilation channel steel, the limiting lug can be inserted into a gap formed by the ventilation channel steel, and the limiting lug can limit the iron core along the vertical direction; the inner lifting hook and the outer lifting hook are matched with each other, and the iron core can be limited along the radial direction.

The lifting plate is provided with a guide hole matched with the guide rod, the guide rod penetrates through the guide hole and is movably connected with the lifting plate, and the length of the guide rod is greater than that of the lifting hook.

By adopting the technical scheme, the guide rods can enter the groove parts before the lifting hooks to play a role in guiding, the number of the guide rods is generally set to be three, the guide rods are uniformly distributed on the inner ring of the lifting plate, and if the guide rods can smoothly enter the groove parts, the lifting hooks are aligned with the corresponding groove parts.

Furthermore, one end of the guide rod is provided with a limiting part, the limiting part can be limited at the position of the guide hole, the other end of the guide rod penetrates through and extends out of the guide hole, and the guide rod can move along the axis direction of the guide rod under the limitation of the guide hole.

Due to the adoption of the technical scheme, the guide rod and the lifting plate are not fixed, so that the guide rod can move along the axis direction if being blocked in the process of entering the groove part, and the iron core is effectively prevented from being scratched.

Furthermore, the lifting device also comprises an edge supporting leg, wherein the edge supporting leg is arranged below the lifting plate, and the length of the edge supporting leg is greater than that of the lifting hook.

Due to the adoption of the technical scheme, the length of the side supporting leg is slightly longer than that of the lifting hook, and the side supporting leg is in contact with the plane for placing the iron core in the process of lifting the stator, so that a gap is formed between the lifting hook and the plane for placing the iron core, and the adjustment of the lifting hook is facilitated; the supporting legs at the edge part are used for supporting when the stator core section hoisting device is not used.

Further, the lifting mechanism comprises a top supporting leg, wherein a length adjusting device is arranged on the top supporting leg, and the top supporting leg can be abutted to the top surface of the iron core when the lifting mechanism is assembled with the iron core.

Due to the adoption of the technical scheme, when the iron core is too high and cannot be carried away at one time, the relative height of the lifting hook and the iron core can be changed by adjusting the top supporting leg, so that the height of a gap between the limiting lug and the bottom surface of the iron core on the target layer is kept horizontal.

Furthermore, the top surface of the lifting plate is provided with a plurality of lifting elements, and lifting rigging can be assembled on the lifting elements.

Correspondingly, the utility model also discloses a stator core section hoisting accessory's application method, including following step:

a positioning step: adjusting the position of the lifting plate to enable the lifting plate to be positioned right above the iron core, controlling the lifting plate to fall, adjusting the lifting plate to enable the guide rod to enter the groove part of the iron core, and adjusting the height of the lifting plate to enable the bottom end of the lifting hook to be matched with the bottom surface of the iron core of the target layer;

a clamping step: starting a linear actuating element, enabling an outer lifting hook and an inner lifting hook to move oppositely, enabling the outer lifting hook to enter an outer groove, enabling the inner lifting hook to enter an inner groove, and enabling the outer lifting hook and the inner lifting hook to be matched with each other to limit an iron core to a lifting mechanism;

hoisting: and controlling the lifting plate to rise to complete the lifting of the iron core.

Furthermore, in the positioning step, if the height of the iron core is less than or equal to that of the lifting hook, when the position of the lifting plate is adjusted, the side supporting legs are abutted against the platform for placing the iron core; if the height of the iron core is larger than that of the lifting hook, when the position of the lifting plate is adjusted, the top supporting leg is abutted against the top surface of the iron core, and the height of the top supporting leg is adjusted until the bottom end of the lifting hook is matched with the bottom surface of the iron core of the target layer.

Furthermore, the bottom end of the lifting hook extends horizontally to form a limit bump which can be matched with a gap on the bottom surface of the iron core, and the limit bumps of the inner lifting hook and the outer lifting hook are arranged oppositely; in the clamping step, the limit lug is driven by a linear execution element to be inserted into a gap on the bottom surface of the iron core of the target layer.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses lifting hook and outer lifting hook cooperation centre gripping lift by crane in the interior excircle of iron core in the drive of accessible sharp executive component, and the clamping process is high-efficient convenient.

2. The utility model discloses it adjusts well with the iron core to be equipped with the guide bar supplementary hoisting accessory.

3. The utility model discloses limit portion landing leg can play the effect of location lifting by crane the during operation, can play the effect of support not lifting by crane the during operation.

4. The utility model discloses the adjustable length of top landing leg to adapt to the not iron core of co-altitude.

Drawings

Fig. 1 is an assembly view of the stator core segment lifting device of the present invention;

fig. 2 is a schematic view of the internal structure of the stator core segment lifting device of the present invention;

fig. 3 is a schematic structural view of the stator core segment lifting device and the iron core assembly of the present invention;

fig. 4 is a partial sectional view of the stator core segment lifting device of the present invention assembled with an iron core;

fig. 5 is a schematic structural diagram of the lifting mechanism of the present invention.

The mark in the figure is: 1-lifting plate, 2-lifting element, 3-guide rail, 4-lifting hook, 401-outer lifting hook, 402-inner lifting hook, 5-linear actuator, 6-guide bar, 7-long leg, 8-edge leg, 9-iron core.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

The utility model provides a stator core section hoisting accessory, as shown in fig. 1-5, includes hoisting plate 1 and a plurality of hoisting mechanism, hoisting mechanism includes guide rail 3, lifting hook 4 and sharp executive component 5, guide rail 3 radially sets up along hoisting plate 1, but lifting hook 4 passes through slider sliding connection in guide rail 3, lifting hook 4 includes outer lifting hook 401 and interior lifting hook 402, sharp executive component 5 locates between outer lifting hook 401 and interior lifting hook 402 to act on outer lifting hook 401 and interior lifting hook 402, outer lifting hook 401 is close to hoisting plate 1 outer lane, interior lifting hook 402 is close to hoisting plate 1 inner circle, and is a plurality of hoisting mechanism arranges in hoisting plate 1 bottom surface along the circumference interval.

The number of hoisting mechanisms and the number of iron core punching sheets are in a multiple relation, a groove part is formed between every two adjacent iron core punching sheets, the groove part comprises an outer groove matched with an outer ring of the iron core 9 and an inner groove matched with an inner ring of the iron core 9, the outer hoisting hook 401 can be matched with the outer groove, the inner hoisting hook 402 can be matched with the inner groove, and more than two hoisting mechanisms can be matched with each other to limit the iron core 9.

The bottom of the lifting hook 4 extends to the horizontal direction to form a limiting convex block which can be matched with a gap on the bottom surface of the iron core 9, the lifting hook 4 is matched with the limiting convex block to form an L-shaped structure, and the inner lifting hook 402 and the outer lifting hook 401 are oppositely arranged. Specifically, the bottom layer of the iron core 9 is provided with a ventilation channel steel, the limiting lug can be inserted into a gap formed by the ventilation channel steel, and the limiting lug can limit the iron core 9 in the vertical direction; the inner hook 402 and the outer hook 401 cooperate with each other to restrain the core 9 in the radial direction.

Still include guide bar 6, it is equipped with the guiding hole that matches with guide bar 6 on the hanger plate 1 to rise, guide bar 6 passes the guiding hole and rises hanger plate 1 swing joint, the length of guide bar 6 is greater than the length of lifting hook 4. Specifically, the guide rods 6 can enter the groove portions before the lifting hooks 4, so as to play a guiding role, the number of the guide rods 6 in the embodiment is three, and the guide rods are uniformly distributed on the inner ring of the lifting plate 1, and if the guide rods 6 can smoothly enter the groove portions, the lifting hooks 4 are aligned with the corresponding groove portions.

One end of the guide rod 6 is provided with a limiting part, the limiting part can be limited at the position of the guide hole, the other end of the guide rod 6 penetrates through and extends out of the guide hole, and the guide rod 6 can move along the axis direction of the guide rod under the limitation of the guide hole. Specifically, because the guide rod 6 and the lifting plate 1 are not fixed, if the guide rod 6 is blocked in the process of entering the groove part, the guide rod 6 can move along the axial direction, and the iron core 9 is effectively prevented from being scratched.

Still include limit portion landing leg 8, limit portion landing leg 8 is located lifting plate 1 below, the length of limit portion landing leg 8 is greater than the length of lifting hook 4. Specifically, the length of the edge supporting leg 8 is slightly longer than that of the lifting hook 4, and in the process of lifting the stator, the edge supporting leg 8 contacts the plane on which the iron core 9 is placed, so that a gap exists between the lifting hook 4 and the plane on which the iron core 9 is placed, and the lifting hook 4 can be conveniently adjusted; the side supporting legs 8 are used for supporting when the stator core section hoisting device is not used.

The iron core lifting device is characterized by further comprising top supporting legs 7, length adjusting devices are arranged on the top supporting legs 7, and the top supporting legs 7 can abut against the top surfaces of the iron cores 9 when the lifting mechanism is assembled with the iron cores 9. Specifically, when the height of the iron core 9 is too high to be removed at one time, the relative height between the lifting hook 4 and the iron core 9 can be changed by adjusting the top support leg 7, so that the height of the gap between the limiting bump and the bottom surface of the iron core 9 of the target layer is kept horizontal.

The top surface of the lifting plate 1 is provided with a plurality of lifting elements 2, and lifting rigging can be assembled on the lifting elements 2. The position of the lifting plate 1 is controlled by pulling the hoist rigging.

Example 2

A using method of a stator core segment hoisting device is shown in figures 1-5, and comprises the following steps:

a positioning step: adjusting the position of the lifting plate 1 to enable the lifting plate 1 to be positioned right above the iron core 9, controlling the lifting plate 1 to fall, adjusting the lifting plate 1 to enable the guide rod 6 to enter the groove part of the iron core 9, and adjusting the height of the lifting plate 1 to enable the bottom end of the lifting hook 4 to be matched with the bottom surface of the iron core 9 of the target layer;

a clamping step: starting the linear actuator 5, moving the outer lifting hook 401 and the inner lifting hook 402 in opposite directions, allowing the outer lifting hook 401 to enter the outer groove, allowing the inner lifting hook 402 to enter the inner groove, and allowing the outer lifting hook 401 and the inner lifting hook 402 to cooperate with each other to limit the iron core 9 to the lifting mechanism;

hoisting: and controlling the lifting plate 1 to ascend to finish the lifting of the iron core 9.

In the positioning step, if the height of the iron core 9 is less than or equal to that of the lifting hook 4, when the position of the lifting plate 1 is adjusted, the side supporting legs 8 are abutted against a platform for placing the iron core 9; if the height of the iron core 9 is larger than that of the lifting hook 4, when the position of the lifting plate 1 is adjusted, the top supporting leg 7 is abutted to the top surface of the iron core 9, and the height of the top supporting leg 7 is adjusted until the bottom end of the lifting hook 4 is matched with the bottom surface of the target layer iron core 9.

The bottom end of the lifting hook 4 extends to the horizontal direction to form a limit bump which can be matched with a gap on the bottom surface of the iron core 9, and the limit bumps of the inner lifting hook 402 and the outer lifting hook 401 are oppositely arranged; in the clamping step, the limit bump is driven by the linear actuator 5 to be inserted into the gap on the bottom surface of the target layer iron core 9.

The linear actuator 5 may be activated to move the outer hook 401 and the inner hook 402 in opposite directions to release the restriction of the core.

Preferably, the linear actuator 5 may be a pneumatic or hydraulic cylinder.

The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to aid in understanding the methods and their core concepts. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. The utility model provides a stator core section hoisting accessory, includes hoisting plate and a plurality of hoisting mechanism, its characterized in that, hoisting mechanism includes the guide rail, lifting hook and sharp executive component, the guide rail is along hoisting plate radial setting, but lifting hook passes through slider sliding connection in the guide rail, lifting hook is including outer lifting hook and interior lifting hook, sharp executive component locates between outer lifting hook and the interior lifting hook to act on outer lifting hook and interior lifting hook, outer lifting hook is close to the hoisting plate outer lane, interior lifting hook is close to the hoisting plate inner circle, and is a plurality of hoisting mechanism arranges in hoisting plate bottom surface along the circumference interval.

2. The stator core segment lifting device according to claim 1, wherein the number of the lifting mechanisms is multiple to the number of the core segments, a groove portion is formed between two adjacent core segments, the groove portion comprises an outer groove matched with an outer ring of the core and an inner groove matched with an inner ring of the core, the outer lifting hook can be matched with the outer groove, the inner lifting hook can be matched with the inner groove, and more than two lifting mechanisms can be matched with each other to limit the core.

3. The stator core segment lifting device according to claim 2, wherein the bottom end of the lifting hook extends horizontally to form a limit bump which can be matched with a gap on the bottom surface of the core, and the limit bumps of the inner lifting hook and the outer lifting hook are arranged oppositely.

4. The stator core segment lifting device of claim 1, further comprising a guide rod, wherein a guide hole matched with the guide rod is formed in the lifting plate, the guide rod penetrates through the guide hole and is movably connected with the lifting plate, and the length of the guide rod is greater than that of the lifting hook.

5. The stator core segment lifting device according to claim 4, wherein one end of the guide rod is provided with a stopper portion which is restricted to the guide hole, and the other end of the guide rod penetrates and protrudes through the guide hole, and the guide rod is movable in the axial direction thereof under the restriction of the guide hole.

6. The stator core segment lifting device of claim 1, further comprising an edge leg disposed below the lifting plate, the edge leg having a length greater than a length of the lifting hook.

7. The stator core segment lifting device of claim 1, further comprising a top leg, wherein the top leg is provided with a length adjustment device, and the top leg can abut against the top surface of the core when the lifting mechanism is assembled with the core.

8. The stator core segment lifting device of claim 1, wherein the top surface of the lifting plate is provided with a plurality of lifting elements, and lifting rigging can be assembled on the lifting elements.