Stator core vertical type lifting appliance and method

Abstract

The invention belongs to the technical field of lifting appliances, and particularly relates to a vertical lifting appliance and method for a stator core. According to the technical scheme, the stator core vertical type lifting appliance comprises a lifting beam, a positioning rib lifting appliance and a connecting lifting rope, a plurality of sliding grooves are formed in the lifting beam, connecting pieces are arranged in the sliding grooves in a sleeved mode, the lower ends of the connecting pieces are connected with upper lifting rings, a plurality of positioning holes are formed beside the sliding grooves, and the connecting pieces and the positioning holes are fixed through positioning pins. The positioning rib lifting appliance comprises a threaded sleeve, a lower lifting ring is connected to the threaded sleeve, the connecting lifting rope is connected between the upper lifting ring and the lower lifting ring, and the threaded sleeve is in threaded connection with the tail end of the positioning rib of the stator core. Compared with a traditional stator iron core hoisting mode, the stator iron core vertical type hoisting tool and method have the advantages that hoisting can be achieved when the supporting ring and the positioning rib are not welded, and it is guaranteed that the positioning rib is not subjected to the radial force effect in the hoisting process.

Description

Technical Field

[0001] The invention belongs to the technical field of lifting tools, and in particular relates to a lifting tool and a method for vertically lifting a stator core. Background Art

[0002] The existing method of vertically lifting the stator core uses a straight-line balanced lifting beam to connect the lifting hooks on both sides of the support ring. After the stator core support ring and positioning ribs are welded, the vertical lifting is performed. This lifting method cannot be used when the stator core support ring and positioning ribs are not welded. Summary of the Invention

[0003] In order to solve the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a stator core vertical lifting sling and method. Compared with the traditional stator core lifting method, this solution can realize lifting when the support ring and positioning ribs are not welded, and ensure that the positioning ribs are not subjected to radial forces during the lifting process.

[0004] The technical solution adopted in the present invention is: A stator core vertical lifting sling includes a lifting beam, a positioning rib lifting sling and a connecting lifting rope. The lifting beam is provided with a plurality of sliding grooves, a connecting piece is sleeved in the sliding groove, the lower end of the connecting piece is connected to an upper lifting ring, a plurality of positioning holes are provided next to the sliding groove, the connecting piece and the positioning hole are fixed by positioning pins, the positioning rib lifting sling includes a threaded sleeve, a lower lifting ring is connected to the threaded sleeve, the connecting lifting rope is connected between the upper lifting ring and the lower lifting ring, and the threaded sleeve is threadedly connected to the end of the positioning rib of the stator core.

[0005] The invention uses the thread at the end of the positioning rib for lifting. Compared with the conventional lifting using a handle on the support ring, the invention can lift the stator core when the support ring and the positioning rib are not welded.

[0006] The lifting beam of the present invention is provided with a plurality of sliding grooves, and the rotating lifting rings in the sliding grooves form lifting points distributed on the circumference of the lifting beam. The position of the rotating lifting rings can be adjusted according to the distribution of the pitch circle of the positioning ribs, so that the positioning ribs are not subjected to radial forces during the lifting process.

[0007] As a preferred solution of the present invention, the shape of the sliding groove is L-shaped. The shape of the sliding groove can be set according to the thread distribution of the end of the positioning rib.

[0008] As a preferred solution of the present invention, the shape of the hanging beam is disc-shaped, and a plurality of sliding grooves are distributed circumferentially on the hanging beam.

[0009] As a preferred solution of the present invention, the plurality of positioning holes corresponding to the sliding groove are evenly arranged along the arrangement direction of the sliding groove.

[0010] As a preferred solution of the present invention, positioning holes are provided on both sides of the sliding groove.

[0011] As a preferred embodiment of the present invention, a circular washer is fixed on the connecting piece, a through hole is provided on the circular washer, and the positioning pin connects the positioning hole and the through hole.

[0012] As a preferred embodiment of the present invention, the upper lifting ring is a rotating lifting ring, and the rotating lifting ring is rotatably connected to the connecting piece.

[0013] As a preferred embodiment of the present invention, the lower lifting ring is a universal lifting ring, and the universal lifting ring is rotatably connected to the threaded sleeve.

[0014] As a preferred embodiment of the present invention, double hook lifting points are provided on the upper part of the lifting beam.

[0015] A method for vertically lifting a stator core includes the following steps: S1: Select a lifting point according to the lifting machine type; S2: Fix the connecting piece to the corresponding lifting point using a positioning pin; S3: Attach the positioning rib lifting tool to the end of the positioning rib for lifting; S4: Connect the lifting beam and the positioning rib lifting tool with a lifting rope; S5: Slowly lift the stator core.

[0016] The beneficial effects of the present invention are: 1. The present invention uses the thread at the end of the positioning rib for lifting. Compared with the conventional method of using a lifting lug fastened to the support ring for lifting, the present invention can lift the stator core in a state where the support ring and the positioning rib are not welded.

[0017] 2. A plurality of sliding grooves are provided on the lifting beam of the present invention. The rotating lifting rings in the sliding grooves form lifting points distributed on the circumference of the lifting beam. The position of the rotating lifting rings can be adjusted according to the pitch circle distribution of the positioning ribs, and the positioning ribs can be made not to be affected by radial forces during the lifting process. Description of the Drawings

[0018] Figure 1 is a schematic structural view of the lifting beam; Figure 2 is a top view of the lifting beam; Figure 3 is a front view of the lifting beam; Figure 4 is a schematic structural view of the positioning rib lifting tool.

[0019] In the figure: 1 - lifting beam; 2 - positioning rib lifting tool; 3 - connecting lifting rope; 11 - sliding groove; 12 - connecting piece; 13 - rotating lifting ring; 14 - positioning hole; 15 - positioning pin; 16 - double hook lifting point; 21 - threaded sleeve; 22 - universal lifting ring. Detailed Embodiments

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0022] As Figures 1 to 4 shown, the vertical lifting sling for the stator core of this embodiment includes a lifting beam 1, a positioning rib sling 2, and a connecting sling 3. A plurality of sliding grooves 11 are provided on the lifting beam 1. A connecting member 12 is sleeved in the sliding grooves 11. The lower end of the connecting member 12 is connected with an upper lifting ring. A plurality of positioning holes 14 are provided beside the sliding grooves 11. The connecting member 12 and the positioning holes 14 are fixed by positioning pins 15. The positioning rib sling 2 includes a threaded sleeve 21. A lower lifting ring is connected to the threaded sleeve 21. The connecting sling 3 is connected between the upper lifting ring and the lower lifting ring. The threaded sleeve 21 is threadedly connected to the end of the positioning rib of the stator core.

[0023] The present invention uses the thread at the end of the positioning rib for lifting. Compared with the conventional lifting using the lifting lugs fastened to the support ring, the present invention can realize lifting the stator core in the state where the support ring and the positioning ribs are not welded.

[0024] A plurality of sliding grooves 11 are provided on the lifting beam 1 of the present invention. The rotating lifting rings 13 in the sliding grooves 11 form lifting points distributed on the circumference of the lifting beam 1. The positions of the rotating lifting rings 13 can be adjusted according to the pitch circle distribution of the positioning ribs, and the positioning ribs can be made not to be affected by radial forces during the lifting process.

[0025] Among them, the shape of the sliding groove 11 is L-shaped. The shape of the sliding groove 11 can be determined according to the distribution form of various types of positioning ribs to be lifted.

[0026] The shape of the lifting beam 1 is disc-shaped, and a plurality of sliding grooves 11 are circumferentially distributed on the lifting beam 1.

[0027] The plurality of positioning holes 14 corresponding to the sliding grooves 11 are uniformly arranged along the arrangement direction of the sliding grooves 11. Positioning holes 14 are provided on both sides of the sliding grooves 11.

[0028] A circular washer is fixed on the connecting member 12 , a through hole is provided on the circular washer, and a positioning pin 15 connects the positioning hole 14 and the through hole.

[0029] The upper lifting ring is a rotating lifting ring 13 , which is rotatably connected to the connecting piece 12 .

[0030] The lower lifting ring is a universal lifting ring 22 , which is rotatably connected to the threaded sleeve 21 .

[0031] A double hook lifting point 16 is provided on the upper portion of the lifting beam 1 .

[0032] The present invention can accommodate stator cores for generators and phase regulators of varying sizes. It can also prevent radial forces from being applied to the ribs during vertical lifting using the threads at the ends of the ribs, due to differences in the pitch radius of the ribs. The present invention utilizes a rib hanger 2 that engages the threads at the ends of the core ribs and then connects to a rotating eye 13 on the lifting beam 1. The rotating eye 13 can be adjusted within a sliding groove 11 on the lifting beam 1, depending on the distribution of the ribs for the cores. After positioning, it is positioned using a locating pin 15. The sliding groove 11 on the lifting beam 1 is designed based on the actual size of the core to be lifted.

[0033] The lifting beam 1 of the present invention adopts a double-hook lifting point 16, and a sliding groove 11 is opened according to the lifting point design. Positioning holes 14 are opened on both sides of the sliding groove 11. The rotating lifting ring 13 passes through the sliding groove 11 and is inserted into the positioning pin 15 for positioning using the positioning hole 14. The positioning rib sling 2 adopts a threaded sleeve 21 for closing the positioning rib, and a universal lifting ring 22 that can rotate 360° is set on the top for connecting the lifting rope. The sliding groove 11 is designed according to the distribution of positioning ribs of different models, which can meet the requirements of keeping the lifting rope and the positioning rib on the same axis when lifting under different positioning rib distribution conditions, ensuring that the positioning rib is not affected by radial force. When lifting different models, it is only necessary to move the rotating lifting ring 13 to the corresponding point in the sliding groove 11. The positioning pin 15 is fixed on the circular washer on the rotating lifting ring 13, and can be directly lifted and moved to insert into the required lifting point.

[0034] The stator core vertical lifting method of this embodiment includes the following steps: S1: Select the lifting point according to the lifting machine model; S2: Fix the connector 12 to the corresponding hanging point using the positioning pin 15; S3: Put the two positioning rib lifting tools together on the ends of the positioning ribs used for lifting; S4: Use a lifting rope to connect the lifting beam 1 and the positioning reinforcement lifting fixture 2; S5: Slowly lift the stator core.

[0035] The present invention can be used for vertical lifting of the stator core support ring and the positioning ribs in the un-welded state. The lifting beam 1 of the present invention adopts a circular structure. The present invention can adjust the position of the lifting points according to the pitch circle distribution of the positioning ribs. The present invention adjusts and positions the lifting points through the sliding groove 11 and the positioning hole 14 on the lifting beam 1. The present invention can realize the vertical lifting of the stator core using the positioning ribs. The present invention can ensure that the positioning ribs are not subjected to radial forces during the lifting process. The present invention can realize the vertical lifting of multiple models on the same lifting beam 1.

[0036] The present invention is not limited to the above optional embodiments, and any person can obtain other various forms of products under the inspiration of the present invention. However, no matter what changes are made in its shape or structure, as long as the technical solutions fall within the scope defined by the claims of the present invention, they all fall within the protection scope of the present invention.

Claims

1. A vertical lifting sling for a stator core, characterized in that: It includes a suspension beam (1), a positioning bar sling (2) and a connecting sling (3). A number of sliding grooves (11) are provided on the suspension beam (1). A connecting member (12) is sleeved in the sliding groove (11). The lower end of the connecting member (12) is connected with an upper lifting ring. A number of positioning holes (14) are provided beside the sliding groove (11). The connecting member (12) and the positioning holes (14) are fixed by positioning pins (15). The positioning bar sling (2) includes a threaded sleeve (21). A lower lifting ring is connected to the threaded sleeve (21). The connecting sling (3) is connected between the upper lifting ring and the lower lifting ring. The threaded sleeve (21) is threadedly connected to the end of the positioning bar of the stator core.

2. The vertical lifting sling for a stator core according to claim 1, characterized in that: The shape of the sliding groove (11) is L-shaped.

3. The vertical lifting sling for a stator core according to claim 1, wherein: The shape of the suspension beam (1) is disc-shaped. A number of sliding grooves (11) are circumferentially distributed on the suspension beam (1).

4. The vertical lifting sling for a stator core according to claim 1, wherein: A number of positioning holes (14) corresponding to the sliding groove (11) are evenly arranged along the arrangement direction of the sliding groove (11).

5. The vertical lifting sling for a stator core according to claim 4, characterized in that: Positioning holes (14) are provided on both sides of the sliding groove (11).

6. The vertical lifting sling for a stator core according to claim 1, characterized in that: A circular washer is fixed on the connecting member (12). A through hole is provided on the circular washer. The positioning pin (15) connects the positioning hole (14) and the through hole.

7. A vertical lifting sling for a stator core according to claim 1, characterized in that: The upper lifting ring is a rotating lifting ring (13). The rotating lifting ring (13) is rotatably connected to the connecting member (12).

8. The vertical lifting sling for a stator core according to claim 1, wherein: The lower lifting ring is a universal lifting ring (22). The universal lifting ring (22) is rotatably connected to the threaded sleeve (21).

9. The vertical lifting sling for a stator core according to claim 1, characterized in that: A double-hook lifting point (16) is provided on the upper part of the suspension beam (1).

10. A method for vertically lifting a stator core, using a stator core vertical lifting spreader according to any one of claims 1 to 9, characterized in that: It includes the following steps: S1: Select a lifting point according to the lifting machine type; S2: Fix the connecting member (12) to the corresponding lifting point using the positioning pin (15); S3: Mate the positioning bar sling (2) to the end of the positioning bar for lifting; S4: Connect the suspension beam (1) and the positioning bar sling (2) with a sling; S5: Slowly lift the stator core.

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