Safe hoisting device for rotor end coil in loose state

Abstract

The utility model belongs to the technical field of steam turbine generators, and discloses a safe hoisting device for a rotor end coil in a loose state. Comprising a clamp body with an accommodating space for accommodating a rotor end coil in a loose state, the clamp body is connected with a hoisting part, and the hoisting part is lifted to realize hoisting of the clamp body. Therefore, manual carrying is not needed, time and labor are saved, and the probability of personnel injury is reduced.

Description

Technical Field

[0001] The utility model relates to a safety lifting device for the end coil of a rotor in a loose state, belonging to the technical field of steam turbine generators. Background Art

[0002] During the processing of the end coil of the rotor, after the end coils of the same group with the bent radian are pasted with insulation, they need to be lifted, and the whole group enters the numerical control machine tool to process the ventilation hole positions. During the lifting process, they need to be tied into bundles with tape and then manually carried for operation. During the handling process, there is no safety lifting point, and the weight of the large-sized coils is too heavy, so it is easy to cause personal safety accidents; during the process of placing the end coils, the coils will collide with the machine tool equipment, resulting in misalignment and deformation of the end coils, damaging the quality of the rotor end coils. After the ventilation hole processing is completed, it also needs to rely on manual handling to leave the equipment, which is also prone to personnel safety accidents and coil collisions. Content of the Utility Model

[0003] Aiming at at least one aspect of the above technical problems, the purpose of the present utility model is to provide a safety lifting device for the end coil of a rotor in a loose state.

[0004] To achieve the above purpose, the present utility model provides the following technical solution: A safety lifting device for the end coil of a rotor in a loose state, including a fixture body having a accommodating space for the end coil of the rotor in a loose state, the fixture body is connected with a lifting part, and lifting the lifting part realizes the lifting of the fixture body. Thus, it is realized that there is no need for manual handling, which saves time and effort and reduces the probability of personnel injury.

[0005] According to the present utility model, further, it also includes a clamping block for fixing the position of the end coil of the rotor in a loose state, the clamping block is placed in the accommodating space, and together with the fixture body, it forms a space for fixing the end coil of the rotor in a loose state. Thus, the position of the end coil of the rotor in a loose state is fixed, and the problem of the end coil of the rotor falling during the lifting process is solved.

[0006] According to the present utility model, further, the fixture body has a first connecting part, and a second connecting part and a third connecting part respectively fixedly connected to both ends of the first connecting part, the second connecting part and the third connecting part are oppositely arranged, thus forming a fixture body with an accommodating space.

[0007] According to the present utility model, further, the clamping block has a guiding groove that cooperates with one end of the lifting part. The clamping block is connected with the lifting part, limiting the movement range of the clamping block, so that the area of the accommodating space for the end coil of the rotor in a loose state is determined within a certain range.

[0008] According to the present utility model, further, one end of the lifting part is located in the accommodating space for the end coil of the rotor in a loose state, and a limiting protrusion cooperating with the guiding groove is provided at this end.

[0009] According to the present utility model, further, the clamping block has a first surface and a second surface which are arranged oppositely up and down. A guiding groove connected to the lifting part is provided on the first surface, and a downward protrusion is formed on the second surface. The protrusion fits with the end coil of the rotor in a loose state in the accommodating cavity, preventing the end coil of the rotor in a loose state from falling out of the accommodating cavity.

[0010] According to the present utility model, further, an elastic protection structure is arranged in the accommodating space for the end coil of the rotor in a loose state, which plays a role in shock absorption and preventing the end coil of the rotor in a loose state from hard collision with the fixture body.

[0011] According to the present utility model, further, the elastic protection structure is a rubber protection plate, which is arranged on each hard surface in contact with the end coil of the rotor in a loose state.

[0012] According to the present utility model, further, the cross section of the guiding groove is an inverted "T" shape, and this end of the lifting part cooperating with the guiding groove is an inverted "T" shape.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The fixture body is connected to the lifting device, which is convenient for using the lifting device to hoist the end coil of the rotor to the required working position after clamping, reducing manual handling.

[0015] 2. With the clamping block for limiting and fixing, the problems of coil misalignment and deformation can be effectively controlled during hoisting, which is very helpful for subsequent processing of ventilation holes.

[0016] 3. The lifting part is provided with a lifting lug, which is convenient for connecting with the hook of the lifting device, increasing the force-bearing point of the hook and preventing it from falling from a high place during hoisting and causing danger.

[0017] 4. Each hard contact surface of the end coil of the rotor is protected by a rubber plate, and no knock and damage will occur, greatly improving the product quality.

[0018] 5. After the end coil of the rotor in a loose state is transported to the machine tool working position, it can be more orderly placed in the material placement area through the lifting device on site, effectively improving the on-site management standard. When taking the coil to be processed, the potential safety hazard of personnel injury caused by the overweight of the large-sized end coil is also avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a safety lifting device for the end coil of a rotor in a loose state according to the present utility model;

[0020] Figure 2 This is a schematic view of the use state of a safety lifting device for the end coil of a rotor in a loose state of the present utility model.

[0021] In the figure: 100 - lifting part, 110 - connecting rod, 111 - lifting lug, 112 - limiting protrusion, 200 - fixture body, 210 - first connecting part, 220 - second connecting part, 230 - third connecting part, 300 - clamping block, 310 - first surface, 311 - guiding groove, 320 - second surface, 321 - protrusion, 330 - first end face, 340 - second end face, 400 - protection structure. Detailed implementation mode

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0023] As Figure 1 shown, the present utility model provides a technical solution: a safety lifting device for the end coil of a rotor in a loose state, which is used for limiting and clamping the end coil of the rotor in a loose state, and transporting it to a machine tool station or a material placement area through a lifting device. It includes: a fixture body 200, the fixture body 200 has a first connecting part 210 and a second connecting part 220 and a third connecting part 230 respectively fixedly connected to both ends of the first connecting part 210, the second connecting part 220 and the third connecting part 230 are arranged oppositely, so as to form a fixture body 200 with an accommodating space; the accommodating space is used to place the processed end coil of the rotor, and the processing standard is: the arc processing has been completed, an insulating part has been pasted between the coils, and it has been bundled with tape; in this embodiment, it is regarded that the second connecting part 220 is connected to the upper end of the first connecting part 210, and the third connecting part 230 is connected to the lower end of the first connecting part 210, that is, the second connecting part 220 is located above the third connecting part 230, and the second connecting part 220 is connected with a lifting part 100 extending vertically upward for the lifting device to fix and lift. Preferably, the first connecting part 210, the second connecting part 220 and the third connecting part 230 are all plates with a flat surface, with low processing and production difficulty, easy to produce, mature technology and low scrap rate; the fixture body 200 is made of a material with high hardness and strong supporting property, and the best choice is a metal material, such as steel, copper, alloy.

[0024] In this embodiment, the lifting part 100 has a connecting rod 110 that penetrates the upper and lower surfaces of the first connecting part 220. A lifting lug 111 is fixedly connected to the top end of the connecting rod 110, which provides a connection and fixing point for the lifting device. The hook of the lifting device is hooked to the lifting lug 111 to prevent dropping during the lifting process.

[0025] In this embodiment, it further includes a clamping block 300. The clamping block 300 has a first surface 310 and a second surface 320 that are arranged opposite to each other up and down, and a first end face 330 and a second end face 340 that are arranged opposite to each other left and right. Here, the first surface 310 is regarded as the upper surface. A guiding groove 311 is provided on the first surface 310 of the clamping block 300. The cross-section of the guiding groove 311 is an inverted "T" shape. A limiting protrusion 112 that cooperates with the guiding groove 310 is provided at the bottom end of the connecting rod 110. The limiting protrusion 112 is an inverted "T" shape. The cooperation between the guiding groove 310 and the limiting protrusion 112 plays a role of guiding and limiting. The second end face 340 is attached to the end coil of the rotor placed in the accommodating space, which limits the end coil of the rotor placed in the accommodating space of the fixture body 200. During hoisting, the problems of coil misalignment and deformation can be effectively controlled, and the accuracy of subsequent processing of ventilation holes can be improved. Preferably, one end of the guiding groove 311 penetrates the first end face 330 and the other end does not penetrate the second end face 340. The reason for not penetrating the second end face 340 is to prevent the limiting protrusion 112 from slipping out of the guiding groove 311 during hoisting. If the clamping block 300 needs to be disassembled, rotate the clamping block 300 by 180°, and pull and rotate the clamping block 300 along the direction of the guiding groove 311, and the limiting protrusion 112 is separated from the guiding groove 311, that is, the clamping block 300 exits the lifting part 100, which provides convenience for subsequent replacement of the clamping block.

[0026] In this embodiment, in order to prevent the end coil of the rotor in a loose state from being bruised after hoisting and affecting the product quality, a protective structure 400 with a shock-absorbing effect is provided in the accommodating cavity of the fixture body 200. The protective structure 400 covers the surfaces of the first connecting part 210 and the third connecting part 230 facing the accommodating space, playing a protective role to avoid hard contact with the end coil of the rotor in a loose state and causing bruising. Preferably, the protective structure 400 is a protective plate made of an elastic material, and most preferably a rubber protective plate.

[0027] In this embodiment, a downward protrusion 321 is integrally formed on the second surface 320 of the clamping block 300. The protrusion 321 is located on the side close to the first end face 330, forming a "T" shape or an "L" shape, preferably an "L" shape. The accommodating space for placing the end coil of the rotor is large, and more end coils of the rotor can be clamped and hoisted at one time. In order to further reduce the bruising of the end coil of the rotor in a loose state, a rubber protective plate is also provided on the second surface 320.

[0028] The clamping and hoisting process of the safety hoisting device for the end coil of the rotor in a loose state:

[0029] 1) The end coils of the rotor in a loose state are first subjected to arc machining. After insulating tapes are pasted between the coils, they are bundled with tapes.

[0030] 2) Select an appropriate number of fixture bodies 200 according to the length of the end coils of the rotor in a loose state. As Figure 2 shown, select three fixture bodies 200 and evenly distribute the fixture bodies 200 on the end coils of the rotor in a loose state. The end coils of the rotor in a loose state pass through the accommodating space of the fixture body 200.

[0031] 3) Through the sliding fit between the guiding groove 311 of the clamping block 300 and the limiting protrusion 112 of the lifting part 100, until the protrusion 320 fixes the end coils of the rotor in a loose state in the accommodating space, completing the fixing operation of the end coils of the rotor in a loose state; the clamping block 300 with the protrusion 321 can well limit the end coils of the rotor in a loose state, and can effectively control the problems of dislocation and deformation of the end coils of the rotor in a loose state during hoisting, improving the accuracy of subsequent machining of ventilation holes.

[0032] 4) The hook of the lifting device hooks with each lifting lug 111 and is transported to the machining station to be processed. It can also be more orderly placed in the material placement area, effectively improving the on-site management standard. When taking the coils to be processed, it also avoids the potential safety hazard of personnel injury caused by the excessive weight of the large-sized end coils. The hook hooks with the lifting lug 111 to prevent the fixture body 200 from falling from a high place and causing a safety accident. Straps can also be passed through the lifting lugs and combined with the adjustment of the number of lifting tools to adapt to the lifting of the end coils of rotors of various models and sizes.

[0033] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety lifting device for the end coil of a loose rotor, characterized in that: It includes a fixture body having a receiving space for accommodating the end coils of the rotor in a loose state, and further includes clamping blocks for fixing the positions of the end coils of the rotor in a loose state. The clamping blocks are placed in the receiving space and together with the fixture body form a space for fixing the end coils of the rotor in a loose state; the fixture body is connected with a lifting part, and lifting the lifting part realizes the lifting of the fixture body.

2. The safety lifting device for the end coil of a rotor in a loose state according to claim 1, characterized in that: The fixture body has a first connecting part, and a second connecting part and a third connecting part fixedly connected to both ends of the first connecting part respectively. The second connecting part and the third connecting part are oppositely arranged, thereby forming a fixture body with a receiving space.

3. The safety lifting device for the end coil of a loose-state rotor as described in claim 1, wherein: The clamping block has a guiding groove for mating connection with one end of the lifting part.

4. The safety lifting device for the end coil of a rotor in a loose state as claimed in claim 3, wherein: One end of the lifting part is located in the receiving space for accommodating the end coils of the rotor in a loose state, and a limiting protrusion for mating with the guiding groove is provided at this end.

5. The safety lifting device for the end coil of a rotor in a loose state according to claim 1, characterized in that: The clamping block has a first surface and a second surface arranged oppositely up and down. The first surface is provided with a guiding groove for connecting with the lifting part, and the second surface is formed with a downward protrusion, and the protrusion fits with the end coils of the rotor in a loose state in the receiving cavity, preventing the end coils of the rotor in a loose state from falling out of the receiving cavity.

6. The safety lifting device for the end coil of the rotor in a loose state according to claim 1, characterized in that: An elastic protection structure is arranged in the receiving space for accommodating the end coils of the rotor in a loose state, which plays a role in shock absorption to prevent the end coils of the rotor in a loose state from colliding rigidly with the fixture body.

7. The safety lifting device for the end coil of a rotor in a loose state as described in claim 6, characterized in that: The elastic protection structure is a rubber protection plate, which is arranged on each rigid surface in contact with the end coils of the rotor in a loose state.

8. The safety lifting device for the end coil of a rotor in a loose state according to claim 3, characterized in that: The cross-section of the guiding groove is an inverted "T" shape, and this end of the lifting part that mates with the guiding groove is an inverted "T" shape.

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