Engine rotor hoisting device

Abstract

The invention relates to the technical field of hoisting, in particular to an engine rotor hoisting device which comprises a bearing assembly, and the bearing assembly comprises a bearing cylinder; the adjusting assembly comprises a sliding block arranged below the bearing cylinder and a second connecting chain arranged below the sliding block; the limiting assembly comprises a mounting ring arranged on the inner side of the second connecting chain and a limiting ring arranged at one end of the mounting ring; and the clamping assembly comprises a clamping ring arranged on the inner side of the limiting ring, the bearing assembly further comprises a bearing groove formed in the inner side of the bearing cylinder, and a connecting frame is arranged above the bearing cylinder. The gear is meshed with the toothed plates at the two ends, so that the toothed plates drive the two sliding blocks to be close to each other, the second connecting chain is in an inclined state, the clamping assembly is attached to the side face of the engine rotor, namely, the second connecting chain limits the engine rotor, and the engine rotor is kept stable in the hoisting process.

Description

TECHNICAL FIELD

[0001] The present application relates to hoisting technology field, especially a kind of engine rotor hoisting device. BACKGROUND

[0002] The generator of thermal power plant needs to be regularly overhauled in the process of long-term use, and the purpose of overhauling the rotor is mainly to check whether the rotor components have cracks, looseness phenomenon, check whether there is inter-turn short circuit, foreign matter entering, etc.

[0003] The generator rotor is slender, and direct pulling out will cause the stator and rotor to collide and grind, damage the winding insulation, and the rotor stator needs to maintain good gap when the rotor is pulled out, so an special rotor hoisting device is urgently needed to hoist the rotor to smoothly carry out the overhaul work and ensure the safe and effective performance of subsequent work. The existing hoisting device cannot well hoist the engine rotor of different lengths, and cannot ensure that the center of gravity of the engine rotor is consistent with the crane, i.e. the engine rotor may be inclined during hoisting. SUMMARY

[0004] The present application aims to provide an engine rotor hoisting device, which aims to solve the hoisting of engine rotors of different lengths.

[0005] The above technical problem is solved by the following technical scheme: the present application proposes the following technical scheme: an engine rotor hoisting device, comprising a bearing assembly, the bearing assembly comprising a bearing cylinder; and, An adjusting assembly comprising a sliding block arranged below the bearing cylinder and a second connecting chain arranged below the sliding block; and, A limiting assembly comprising a mounting ring arranged inside the second connecting chain and a limiting ring arranged at one end of the mounting ring; and, A clamping assembly comprising a clamping ring arranged inside the limiting ring.

[0006] As a preferred embodiment of the engine rotor hoisting device of the present application: the bearing assembly further comprises a bearing groove opened inside the bearing cylinder, and a connecting frame is arranged above the bearing cylinder.

[0007] As a preferred embodiment of the engine rotor hoisting device of the present application: a connecting frame is arranged above the connecting frame, a first connecting chain is arranged inside the connecting frame, and a fixed frame is arranged above the first connecting chain.

[0008] As a preferred embodiment of the engine rotor hoisting device: the adjusting assembly further comprises a mounting cylinder arranged outside the bearing cylinder, a rocker is arranged inside the mounting cylinder, a worm is arranged at one end of the rocker, a turbine is arranged at one end of the worm, a connecting rod is arranged below the turbine, and a gear is arranged below the connecting rod.

[0009] As a preferred embodiment of the engine rotor hoisting device: the inside of the bearing cylinder is provided with a toothed plate, the toothed plate is connected in meshing with the gear, one end of the toothed plate is provided with a sliding block, and a positioning groove is arranged at one end of the sliding block.

[0010] As a preferred embodiment of the engine rotor hoisting device: the clamping assembly further comprises a rotating ring arranged at one end of the clamping ring, a first inclined groove is arranged inside the rotating ring, the first inclined groove is arranged in a circumferential array outside the rotating ring, and a first positioning block is arranged between the rotating rings.

[0011] As a preferred embodiment of the engine rotor hoisting device: a connecting plate is arranged inside the rotating ring, a second inclined groove is arranged inside the connecting plate, the first positioning block is connected with the second inclined groove, a clamping plate is arranged at one end of the connecting plate, an arc-shaped plate is arranged at one end of the clamping plate, and the arc-shaped plate is arranged in an array at one end of the clamping plate.

[0012] As a preferred embodiment of the engine rotor hoisting device: a transmission plate is arranged inside the first inclined groove, a connecting block is arranged between the rotating rings, the transmission plate is arranged at both ends of the connecting block, an extrusion plate is arranged at one end of the connecting block, and support plates are arranged at both ends of the extrusion plate.

[0013] As a preferred embodiment of the engine rotor hoisting device: the limiting assembly further comprises a ratchet groove arranged inside the limiting ring, and the ratchet groove is arranged in a circumferential array inside the limiting ring.

[0014] As a preferred embodiment of the engine rotor hoisting device: receiving grooves are arranged at both ends of the clamping ring, an operating shaft is arranged inside the receiving grooves, pawls are arranged outside the operating shaft, elastic members are arranged inside the receiving grooves, and the elastic members are connected to one end of the pawls.

[0015] The engine rotor hoisting device has the beneficial effects that the gear is meshed with the toothed plates at both ends, so that the toothed plates drive the two sliding blocks to approach, the second connecting chain is in an inclined state, the clamping assembly is attached to the side surface of the engine rotor, the second connecting chain limits the engine rotor, and the engine rotor is kept stable during hoisting. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to make the technical solution of the embodiments of the present application clearer, the drawings of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described in the following description only relate to some embodiments of the present application, but not limit the present application.

[0017] Figure 1 The overall assembly of the present application is shown in the figure.

[0018] Figure 2 The local assembly of the present application is shown in the figure.

[0019] Figure 3 The adjusting assembly of the present application is shown in the figure.

[0020] Figure 4 The clamping assembly of the present application is shown in the figure.

[0021] Figure 5 The clamping assembly of the present application is shown in the figure.

[0022] Figure 6 The clamping assembly of the present application is shown in the figure.

[0023] Figure 7 The limiting assembly of the present application is shown in the figure. DETAILED DESCRIPTION

[0024] In order to make the technical solution of the embodiments of the present application clearer, the drawings of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described in the following description only relate to some embodiments of the present application, but not limit the present application.

[0025] The terms used in the present application are those general terms currently widely used in the art in consideration of the functions about the present application, but these terms can be changed according to the intention of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms can be selected by the applicant, and in this case, the detailed meaning thereof will be described in the detailed description of the present application. Therefore, the terms used in the specification should not be understood as simple names, but based on the meaning of the terms and the overall description of the present application.

[0026] Embodiment 1, Reference Figure 1 The present embodiment provides an engine rotor hoisting device, which comprises a bearing assembly 1, the bearing assembly 1 comprising a bearing cylinder 11; and, An adjusting assembly 2 comprising a sliding block 27 arranged below the bearing cylinder 11 and a second connecting chain 271 arranged below the sliding block 27; and, A limiting assembly 4 comprising a mounting ring 45 arranged inside the second connecting chain 271 and a limiting ring 41 arranged at one end of the mounting ring 45; and, A clamping assembly 3 comprising a clamping ring 31 arranged inside the limiting ring 41.

[0027] The support assembly 1 also includes a support groove 111 opened inside the support cylinder 11, and a connecting frame 112 is provided above the support cylinder 11.

[0028] A connecting frame 112 is provided above the connecting frame 112, a first connecting chain 12 is provided on the inner side of the connecting frame 112, and a fixing frame 13 is provided above the first connecting chain 12. The bearing cylinder 11 strengthens the structure through the bearing groove 111. The connecting frame 112, the first connecting chain 12 and the fixing frame 13 form a multi-level load transfer path, which can evenly distribute the weight of the engine rotor to the crane hook, avoid local structural overload, and is suitable for lifting heavy engine rotors.

[0029] The adjusting assembly 2 also includes a mounting cylinder 21 located outside the bearing cylinder 11. A rocker arm 211 is located inside the mounting cylinder 21. One end of the rocker arm 211 has a worm gear 22, and the other end of the worm gear 22 has a turbine 23. Below the turbine 23 is a connecting rod 231, and below the connecting rod 231 is a gear 24. The meshing transmission between the worm gear 22 and the turbine 23 has a reverse self-locking characteristic. Combined with the rigid meshing of the gear 24 and the toothed plate 25, this ensures that the adjusted position of the sliding block 27 remains stable. Even if subjected to external impact during hoisting, the tilt angle of the second connecting chain 271 will not change on its own, ensuring the continued effectiveness of the limit position.

[0030] The inner side of the bearing cylinder 11 is provided with a toothed plate 25, which is meshed with the gear 24. One end of the toothed plate 25 is provided with a sliding block 27, and one end of the sliding block 27 is provided with a positioning groove 26.

[0031] Specifically, the adjustment component 2 drives the transmission between the worm gear 22, turbine 23, gear 24, and toothed plate 25 via the rocker arm 211. This precisely drives the sliding blocks 27 on both sides to move closer synchronously, causing the second connecting chain 271 to change from a vertical state to an inclined state, thus forming a multi-directional limiting effect on the engine rotor. This inclined force-bearing structure can counteract the radial force generated by the rotor's swaying during hoisting, preventing the rotor from shifting or rotating during lifting and movement, and significantly reducing safety risks such as collisions and falls.

[0032] Use process: in use, the hook of the crane or the traveler is connected to the fixing frame 13, the second connecting chain 271 is connected to the engine rotor by rotating the rocker 211 to make it basically in a vertical state, then the rocker 211 is rotated to drive the worm 22 to rotate, the worm 22 engages to drive the turbine 23 at one end to rotate, at this time the turbine 23 drives the gear 24 to rotate through the connecting rod 231, the gear 24 engages with the toothed plates 25 at both ends, so that the toothed plates 25 drive the two sliding blocks 27 to approach, the second connecting chain 271 is in an inclined state, and the clamping assembly 3 is attached to the side of the engine rotor, that is, the second connecting chain 271 limits the engine rotor, so that the engine rotor remains stable during hoisting, and then hoisting can be started.

[0033] Embodiment 2, refer to Figures 1-7 , the second embodiment of the application, different from the previous embodiment, further comprises a rotating ring 32 provided at one end of the clamping ring 31, a first inclined groove 321 is formed in the inner side of the rotating ring 32, the first inclined groove 321 is circumferentially arranged on the outer side of the rotating ring 32, and a first positioning block 322 is arranged between the rotating rings 32. The clamping assembly 3 can automatically trigger the contraction of the extrusion plate 36 when the engine rotor is placed between the clamping plates 34 through the linkage structure of the rotating ring 32, the first inclined groove 321, the transmission plate 351 and the extrusion plate 36, the engine rotor extrudes the clamping plate 34 to drive the expansion of the connecting plate 33, the rotating ring 32 is driven to rotate through the cooperation of the second inclined groove 331 and the first positioning block 322, and finally the extrusion plate 36 is contracted inward and attached to the surface of the engine rotor, realizing the self-adaptive effect of placing and clamping.

[0034] The inner side of the rotating ring 32 is provided with a connecting plate 33, a second inclined groove 331 is formed in the inner side of the connecting plate 33, the first positioning block 322 is connected with the second inclined groove 331, the first positioning block 322 is slidingly arranged in the second inclined groove 331, one end of the connecting plate 33 is provided with a clamping plate 34, the connecting plate 33 is provided with a plurality of groups at a radial distance from the center of the clamping ring 31, and the clamping plates 34 are arranged at the close end of the plurality of connecting plates 33, one end of the clamping plate 34 is provided with an arc-shaped plate 341, and the arc-shaped plates 341 are arranged at one end of the clamping plate 34. The array of arc-shaped plates 341 at one end of the clamping plate 34 can increase the contact area with the surface of the engine rotor, at the same time, the extrusion plate 36 moves in the first inclined groove 321 by sliding the transmission plate 351, which will also cause the inward movement of the connecting block 35, the clamping force of the extrusion plate 36 on the engine rotor is uniformly distributed in the circumferential direction, avoiding local excessive pressure from causing scratches or deformation on the surface of the rotor.

[0035] The inner side of the first inclined groove 321 is provided with a transmission plate 351, and the connection block 35 is arranged between the rotating rings 32, and the transmission plate 351 is arranged at both ends of the connection block 35, and one end of the connection block 35 is provided with an extrusion plate 36, and both ends of the extrusion plate 36 are provided with support plates 361.

[0036] The use process is as follows: when the two ends of the engine rotor are installed between the clamping plates 34, the engine rotor extrudes the clamping plates 34, so that the clamping plates 34 expand outward, when the clamping plates 34 and the connecting plates 33 expand outward, the connecting plates 33 drive the first positioning blocks 322 to slide and swing through the second inclined grooves 331, the first positioning blocks 322 drive the rotating rings 32 to rotate, when the rotating rings 32 rotate, the rotating rings 32 drive the transmission plates 351 to shrink inward through the first inclined grooves 321, the transmission plates 351 drive the connection blocks 35 and the extrusion plates 36 to move and shrink inward, after the extrusion plates 36 shrink, the extrusion plates 36 extrude and fix the engine rotor, so that the engine rotor is prevented from being unstable during maintenance.

[0037] Embodiment 3, refer to Figures 1-7 The third embodiment of the application is different from the previous embodiment, and further comprises a limiting assembly 4 which further comprises a ratchet groove 411 arranged in the inner side of the limiting ring 41, and the ratchet grooves 411 are arranged in the inner side of the limiting ring 41 in a circumferential array. The ratchet grooves 411 in the inner side of the limiting ring 41 and the pawls 43 of the clamping ring 31 form a one-way stop mechanism: when the rotor is rotated to adjust the angle during maintenance, if the rotor has a tendency to rotate back due to gravity or external force, the pawls 43 will be embedded in the corresponding ratchet grooves 411 under the elastic force of the elastic members 44, so as to avoid the deviation of the maintenance position caused by the rotation back, and improve the precision of the maintenance operation.

[0038] The two ends of the clamping ring 31 are provided with receiving grooves 42, the inner side of the receiving grooves 42 is provided with operation shafts, the outer side of the operation shafts is provided with pawls 43, the inner side of the receiving grooves 42 is provided with elastic members 44, and one end of the pawls 43 is connected to the elastic members 44. The inclined surface and the straight surface of the pawls 43 and the ratchet grooves 411 allow the engine rotor to rotate smoothly in one direction, such as clockwise, to adjust the angle, and when the rotor is rotated in the opposite direction, the pawls 43 are rigidly stopped, realizing the effect of adjustable and easy positioning, and the continuous elastic force of the elastic members 44 ensures that the pawls 43 are always in contact with the ratchet grooves 411, so that the rotor can be stably stopped even in a vibrating environment, avoiding the risk of rotation back caused by the pawls 43 being separated.

[0039] Use process: when the engine rotor needs to be overhauled, the fixed engine rotor will drive the clamping ring 31 to rotate by directly rotating the engine rotor. Due to the large weight of the engine rotor, the engine rotor will rotate after rotation. When the engine rotor rotates after rotation, the pawl 43 inside the clamping ring 31 will rotate into the ratchet groove 411. When the pawl 43 rotates into the ratchet groove 411, the elastic element 44 will drive the lower end of the pawl 43 to swing and embed into the ratchet groove 411, thereby limiting the clamping ring 31 and the engine rotor, preventing the engine rotor from rotating and affecting the efficiency of the engine rotor overhaul.

[0040] Finally, it should be pointed out that the methods and devices described in detail above are only embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present application.

Claims

1. An engine rotor hoisting device, characterized in that: include, The support assembly (1) includes a support cylinder (11); and, The adjusting assembly (2) includes a sliding block (27) disposed below the bearing cylinder (11) and a second connecting chain (271) disposed below the sliding block (27); and, The limiting component (4) includes a mounting ring (45) disposed inside the second connecting chain (271) and a limiting ring (41) disposed at one end of the mounting ring (45); and, The clamping assembly (3) includes a clamping ring (31) disposed inside the limiting ring (41).

2. The engine rotor hoisting device as described in claim 1, characterized in that: The bearing assembly (1) also includes a bearing groove (111) opened inside the bearing cylinder (11), and a connecting frame (112) is provided above the bearing cylinder (11).

3. The engine rotor hoisting device as described in claim 2, characterized in that: The connecting frame (112) is provided above the connecting frame (112), the inner side of the connecting frame (112) is provided with a first connecting chain (12), and the first connecting chain (12) is provided with a fixing frame (13) above the first connecting chain (12).

4. The engine rotor hoisting device as described in claim 3, characterized in that: The adjustment assembly (2) also includes an installation cylinder (21) located outside the bearing cylinder (11). The inner side of the installation cylinder (21) is provided with a rocker arm (211). One end of the rocker arm (211) is provided with a worm gear (22). One end of the worm gear (22) is provided with a turbine (23). Below the turbine (23) is a connecting rod (231). Below the connecting rod (231) is a gear (24).

5. The engine rotor hoisting device as described in claim 4, characterized in that: The inner side of the bearing cylinder (11) is provided with a toothed plate (25), which is meshed with a gear (24). One end of the toothed plate (25) is provided with a sliding block (27), and one end of the sliding block (27) is provided with a positioning groove (26).

6. The engine rotor hoisting device as described in claim 5, characterized in that: The clamping assembly (3) also includes a rotating ring (32) located at one end of the clamping ring (31). A first inclined groove (321) is provided on the inner side of the rotating ring (32). The first inclined groove (321) is arranged in a circumferential array on the outer side of the rotating ring (32). A first positioning block (322) is provided between the rotating rings (32).

7. The engine rotor hoisting device as described in claim 6, characterized in that: The inner side of the rotating ring (32) is provided with a connecting plate (33), and the inner side of the connecting plate (33) is provided with a second inclined groove (331). The first positioning block (322) is connected to the second inclined groove (331). One end of the connecting plate (33) is provided with a clamping plate (34), and one end of the clamping plate (34) is provided with an arc plate (341). The arc plates (341) are arranged in an array at one end of the clamping plate (34).

8. The engine rotor hoisting device as described in claim 7, characterized in that: The first inclined groove (321) is provided with a transmission plate (351) inside, and a connecting block (35) is provided between the rotating rings (32). The transmission plate (351) is located at both ends of the connecting block (35). One end of the connecting block (35) is provided with a pressing plate (36), and both ends of the pressing plate (36) are provided with support plates (361).

9. The engine rotor hoisting device as described in claim 8, characterized in that: The limiting component (4) also includes a ratchet (411) provided inside the limiting ring (41), and the ratchet (411) is arranged in a circumferential array inside the limiting ring (41).

10. The engine rotor hoisting device as described in claim 9, characterized in that: The clamping ring (31) has storage grooves (42) at both ends. An operating shaft is provided on the inner side of the storage groove (42), and a pawl (43) is provided on the outer side of the operating shaft. An elastic element (44) is provided on the inner side of the storage groove (42), and the elastic element (44) is connected to one end of the pawl (43).

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