A lifting tool for high-speed shaft of wind power gearbox

Abstract

The invention relates to the technical field of lifting tooling, and specifically to a lifting tooling for a high-speed shaft of a wind power gearbox, comprising lifting equipment, and having the following beneficial effects: improving a high-speed shaft lifting tooling assembly, designing a high-speed shaft fixing half hoop 2, a high-speed shaft fixing half hoop 1, a cross locking ring, and a telescopic rod 2 on the inner side to cooperate with each other to tighten the high-speed shaft to complete automatic fixation, and in addition, an oblique inward extrusion anti-sliding block is designed on the inner side of the high-speed shaft fixing half hoop 2 and the high-speed shaft fixing half hoop 1 to have a twisted curved surface shape obliquely 30°, and when the high-speed shaft fixing half hoop 2 and the high-speed shaft fixing half hoop are tightened, they fit the surface of the high-speed shaft of the wind power gearbox to generate more contact surfaces, and the twisted curved surface design can provide multiple contact points in different spaces, and these contact points can evenly distribute the clamping force to prevent the workpiece from moving during the lifting process, thereby improving the stability of the lifting tooling after fixation.

Description

Technical Field

[0001] The invention belongs to the technical field of lifting tooling, and in particular relates to a lifting tooling for a high-speed shaft of a wind power gear box. Background Art

[0002] In a wind turbine generator set, the gearbox plays a key role in connecting the entire transmission chain. The high-speed shaft has a relatively high frequency of failure due to its high rotation speed. The overall weight of a conventional high-speed shaft sleeve is 200-300KG, and it is extremely difficult to disassemble and assemble the high-speed shaft sleeve by manpower alone. Therefore, lifting tools are used to assist in the disassembly and assembly of the high-speed shaft sleeve; but the current auxiliary tools are basically one type of tool for one type of gearbox, that is, the auxiliary replacement tool is not universal, resulting in the need to install different tools when replacing high-speed shafts of different gearboxes, which is not convenient enough.

[0003] The existing Chinese patent document with publication number CN221479294U proposes a lifting tool for the high-speed shaft of a wind turbine gearbox, which uses a fixed block to form a concave cavity through a top plate and two side plates. shaped structure, fixing bolts are screwed into the fixing screw holes of the side plates on both sides of the fixing block at the same time, and the positive pressure generated by the torque of multiple sets of bolts acts on both sides of the gear box lifting ears and generates friction, so that the fixing block is fixedly installed on the gear box lifting ears for hoisting. However, it is necessary to manually install the fixing bolts and the gear box lifting ears, which is very difficult to install at high altitudes and has low hoisting efficiency.

[0004] Therefore, the present invention proposes a lifting fixture for the high-speed shaft of a wind turbine gearbox, which solves the problem that the prior art requires manual installation and fixation of the lifting fixture and the high-speed shaft of the gearbox to be lifted, which is very inconvenient to operate. The fixing components of the lifting fixture are designed so that they can automatically lock the two ends of the gearbox high-speed shaft, making it easy to operate and reducing the burden of manual operation. Summary of the invention

[0005] In view of the deficiencies in the prior art, the object of the present invention is to provide a lifting tool for a high-speed shaft of a wind turbine gearbox to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lifting fixture for a high-speed shaft of a wind turbine gearbox, comprising a lifting device, a double sling is arranged above the lifting device, a winding device adapted for the double sling is arranged at the bottom of the lifting device, a lifting connector is arranged at one end of the double sling, a lifting fixture frame is arranged below the lifting connector, a high-speed shaft lifting fixture assembly is arranged below the lifting fixture frame, the high-speed shaft lifting fixture assembly comprises a fixed outer frame, a high-speed shaft fixed half hoop 1 and a high-speed shaft fixed half hoop 2 are arranged inside the fixed outer frame, and oblique inward extrusion anti-sliding blocks are evenly distributed on the inner sides of the high-speed shaft fixed half hoop 1 and the high-speed shaft fixed half hoop 2.

[0007] Preferably, the high-speed shaft fixed half hoop one and the high-speed shaft fixed half hoop two are symmetrically arranged on the inner side of the fixed outer frame, the lower ends of the high-speed shaft fixed half hoop one and the high-speed shaft fixed half hoop two are respectively rotatably connected to the bottom of the inner surface of the fixed outer frame, the oblique inward extrusion anti-sliding block is fixedly installed on the inner side of the high-speed shaft fixed half hoop one and the high-speed shaft fixed half hoop two, a cross locking ring is arranged in the middle of the outer surface of the cross locking ring, and a connecting block is symmetrically and movably installed on the upper end of the cross locking ring.

[0008] Preferably, a telescopic rod 2 is symmetrically fixedly installed above the inner surface of the fixed outer frame, one end of the telescopic rod 2 is fixedly connected to the side surface of the connecting block, a return spring rod is arranged below the telescopic rod 2, one end of the return spring rod is hinged to the inner surface of the fixed outer frame, and the other end of the return spring rod is respectively hinged to the outer surfaces of the high-speed shaft fixed half hoop 2 and the high-speed shaft fixed half hoop 1.

[0009] Preferably, an adhesion pad is provided at the middle part of the inner side of the anti-slip block for oblique inward extrusion, a connecting locking block is provided between the outer surface of the adhesion pad and the inner surface of the anti-slip block for oblique inward extrusion, and anti-slip filling pads are provided at both ends of the adhesion pad, and the anti-slip filling pads are fixedly bonded to the inner surface of the anti-slip block for oblique inward extrusion.

[0010] Preferably, a connecting tail plate is fixedly installed on one side of the connecting locking block, and the connecting tail plate is an L-shaped bending strip that is symmetrical up and down, one end of the L-shaped bending strip on one side of the connecting tail plate is fixedly connected to the inner surface of the anti-sliding block that is extruded obliquely inward, and one end of the L-shaped bending strip on the other side of the connecting tail plate is fixedly connected to the outer surface of the adhesion pad, and protective baffles are respectively provided on both sides of the connecting tail plate, and the protective baffles are fixedly installed on one side of the connecting locking block.

[0011] Preferably, an extruded triangular block 1 is movably mounted on the inner wall on one side of the connecting locking block, and an extruded triangular block 2 is movably mounted on the inner wall on the other side of the connecting locking block, one end of the extruded triangular block 1 is fixedly connected to the inner surface of the anti-sliding block extruded obliquely inward, and one end of the extruded triangular block 2 is fixedly connected to the outer surface of the adhesion pad.

[0012] Preferably, a protruding locking head is movably installed inside the connecting locking block, one end of the protruding locking head is symmetrically provided with a groove, and an engaging semicircular block adapted to the protruding locking head is symmetrically provided on the inner side of the L-shaped bending strip of the connecting tail plate, and the side surface of the other end of the protruding locking head contacts the side surfaces of the extruded triangular block one and the extruded triangular block two.

[0013] Preferably, inclined pressure plates are symmetrically rotatably installed on the inner two side surfaces of the connecting locking block, the side walls of the protruding locking head are provided with slots adapted to the inclined pressure plates, and a bending gasket is fixedly installed between one side surface of the inclined pressure plate and the inner surface of the connecting locking block.

[0014] Preferably, connecting steel cables are symmetrically arranged above the lifting tool frame, and the upper ends of the connecting steel cables are respectively fixedly connected to the lower ends of the lifting connecting heads. Mobile platforms are symmetrically and slidingly installed on the two side surfaces of the lifting tool frame, and a telescopic rod 1 is fixedly installed in the middle of the upper surface of the lifting tool frame. Two groups of telescopic rods 1 are relatively arranged, and one end of the two groups of telescopic rods 1 is fixedly connected to the upper side surface of the mobile platform.

[0015] Preferably, a motor is fixedly mounted on the outer side of the mobile platform, the outer surface of the rotating shaft of the fixed outer frame is rotatably connected to the inner wall of the mobile platform via a bearing, and one end of the rotating shaft of the fixed outer frame is fixedly connected to the output shaft of the motor.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] A complete lifting fixture is formed by a lifting fixture frame and a high-speed shaft lifting fixture assembly, and the high-speed shaft lifting fixture assembly is improved. A high-speed shaft fixing half hoop 2, a high-speed shaft fixing half hoop 1, a cross locking ring, and a telescopic rod 2 are designed on the inside to tighten the high-speed shaft to complete automatic fixation. In addition, an oblique inward extrusion anti-sliding block is designed on the inside of the high-speed shaft fixing half hoop 2 and the high-speed shaft fixing half hoop 1 to be obliquely 30° and in a twisted curved surface shape. The high-speed shaft fixing half hoop 2 and the high-speed shaft fixing half hoop are used to tighten the high-speed shaft of the wind turbine gearbox. The workpiece fits the surface of the lifting tool and produces more contact areas. The twisted curved surface design can provide multiple contact points in different spaces. These contact points can evenly distribute the clamping force to prevent the workpiece from moving during lifting and improve the stability of the lifting tooling after fixation. There is no need for manual installation of fixings as a whole, which solves the problem that the prior art requires manual installation and fixation of the lifting tooling and the high-speed shaft of the gear box to be lifted, which is very inconvenient to operate. The two ends of the high-speed shaft of the gear box can be automatically locked, which is convenient for operation and reduces the burden of manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall assembly front structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the overall assembly side structure of the present invention.

[0020] Figure 3 It is a front structural schematic diagram of the connection between the lifting connector and the lifting fixture frame of the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the lifting connector and the lifting fixture frame connected as viewed from above according to the present invention.

[0022] Figure 5 This is a schematic diagram of the internal structure after the high-speed shaft is installed in the fixed outer frame of the present invention.

[0023] Figure 6 It is a schematic diagram of the internal structure of the fixed outer frame of the present invention in a locked state.

[0024] Figure 7 It is a front structural schematic diagram of the fixed outer frame of the present invention in a locked state.

[0025] Figure 8 It is a schematic diagram of the top view of the structure of the fixed outer frame of the present invention in a locked state.

[0026] Fig. 9 It is a schematic diagram of the structure of the high-speed shaft fixing half hoop after being locked according to the present invention.

[0027] Fig.10 It is a front structural schematic diagram of the high-speed shaft fixing half hoop in a locked state of the present invention.

[0028] Fig.11 It is a schematic diagram of the structure of a unit component of the oblique inward extrusion anti-sliding block of the present invention.

[0029] Fig.12 For the present invention Fig. 9 A is an enlarged structural diagram of FIG.

[0030] Fig.13 For the present invention Fig.10 Schematic diagram of the enlarged structure at B.

[0031] Fig.14 For the present invention Fig.11 Enlarged structural diagram at C.

[0032] In the figure: 1. lifting equipment; 2. double slings; 3. lifting connector; 31. triangular balance frame; 4. lifting tool frame; 41. mobile platform; 411. motor; 42. telescopic rod one; 43. connecting steel cable; 5. high-speed shaft lifting tool assembly; 51. fixed outer frame; 52. high-speed shaft fixed half hoop one; 521. high-speed shaft fixed half hoop two; 53. reset spring rod; 54. cross locking ring; 541. connecting block; 55. telescopic rod two; 56. oblique inward extrusion anti-slip block; 561. adhesive pad; 5611. anti-slip deformation claw; 562. connecting locking block; 5621. connecting tail plate; 5622. extrusion triangle block one; 5623. extrusion triangle block two; 5624. extending locking head; 5625. oblique pressure plate; 5626. bending gasket; 563. anti-slip filling pad. DETAILED DESCRIPTION

[0033] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1, please refer to Figures 1 to 14The present invention provides a technical solution: comprising a lifting device 1, a double sling 2 is arranged above the lifting device 1, a winding device adapted for the double sling 2 is arranged at the bottom of the lifting device 1, a lifting connector 3 is arranged at one end of the double sling 2, a lifting tool frame 4 is arranged below the lifting connector 3, a high-speed shaft lifting tool assembly 5 is arranged below the lifting tool frame 4, and the high-speed shaft lifting tool assembly 5 includes a fixed outer frame 51, a high-speed shaft fixed half hoop 1 52 and a high-speed shaft fixed half hoop 2 521 are arranged inside the fixed outer frame 51, and the inner sides of the high-speed shaft fixed half hoop 1 52 and the high-speed shaft fixed half hoop 2 521 are both The oblique inward extrusion anti-sliding block 56 is evenly distributed, the high-speed shaft fixed half hoop 1 52 and the high-speed shaft fixed half hoop 2 521 are symmetrically arranged on the inner side of the fixed outer frame 51, and the lower ends of the high-speed shaft fixed half hoop 1 52 and the high-speed shaft fixed half hoop 2 521 are respectively rotatably connected to the bottom of the inner surface of the fixed outer frame 51, and the oblique inward extrusion anti-sliding block 56 is fixedly installed on the inner side of the high-speed shaft fixed half hoop 1 52 and the high-speed shaft fixed half hoop 2 521, and a cross locking ring 54 is arranged in the middle of the outer surface of the oblique inward extrusion anti-sliding block 56, and a connecting block 541 is symmetrically and movably installed on the upper end of the cross locking ring 54, and the inner side of the fixed outer frame 51 A telescopic rod 2 55 is symmetrically fixedly installed above the surface, one end of the telescopic rod 2 55 is fixedly connected to the side surface of the connecting block 541, and a reset spring rod 53 is arranged below the telescopic rod 2 55, one end of the reset spring rod 53 is hinged to the inner surface of the fixed outer frame 51, and the other end of the reset spring rod 53 is respectively hinged to the outer surfaces of the high-speed shaft fixed half hoop 2 521 and the high-speed shaft fixed half hoop 1 52; in this embodiment, the lifting equipment 1 and the double sling 2 can lift the lifting connector 3 with the cooperation of the winding equipment, and the lifting connector 3 plays the role of fixing the lifting tool frame 4, and the lifting tool frame 4 is moved by the moving plane The platform 41 and the high-speed shaft lifting tooling assembly 5 fix the two ends of the high-speed shaft of the wind turbine gearbox, which is convenient for lifting the high-speed shaft of the wind turbine gearbox. The high-speed shaft fixing half hoop 1 52 and the high-speed shaft fixing half hoop 2 521 inside the fixed outer frame 51 form a complete clamping ring. During installation, the fixed outer frame 51 passes through the two ends of the high-speed shaft of the wind turbine gearbox, and then the telescopic rod 2 55 is controlled to work and contract to pull the connecting block 541 to both sides, so that the cross locking ring 54 is cross-locked, so that the high-speed shaft fixing half hoop 2 521 and the high-speed shaft fixing half hoop 1 52 are tightened to clamp the high-speed shaft of the wind turbine gearbox and complete automatic fixation;In this embodiment, the oblique inward extrusion anti-sliding block 56 is obliquely 30° in a twisted curved surface shape. When the high-speed shaft fixing half hoop 2 521 and the high-speed shaft fixing half hoop 1 52 clamp the high-speed shaft of the wind turbine gearbox, they fit the surface thereof to generate more contact surfaces. The twisted curved surface design can provide multiple contact points in different spaces. These contact points can evenly distribute the clamping force to prevent the workpiece from moving during the lifting process. In addition, the full surrounding design of multiple groups of oblique inward extrusion anti-sliding blocks 56 can provide additional supporting force, thereby increasing the friction force, which helps to improve the clamping force and ensure that the workpiece will not loosen during the processing process. The curved surface shape can also produce a self-locking effect, further increasing the reliability of clamping and making the workpiece more stable in the clamped state. ;

[0035] Example 2, please refer to Figures 1 to 14On the basis of the first embodiment, in order to increase the self-locking effect of the oblique inward extrusion anti-sliding block 56 and improve the stability after fixation, the present embodiment further proposes that an adhesive pad 561 is provided at the inner middle part of the oblique inward extrusion anti-sliding block 56, a connecting locking block 562 is provided between the outer surface of the adhesive pad 561 and the inner surface of the oblique inward extrusion anti-sliding block 56, and anti-slip filling pads 563 are provided at both ends of the adhesive pad 561. The anti-slip filling pad 563 is fixedly bonded to the inner surface of the oblique inward extrusion anti-sliding block 56, and a connecting tail plate 5621 is fixedly installed on one side of the connecting locking block 562. The connecting tail plate 5621 is an L-shaped bending strip symmetrical in top and bottom, and one end of the L-shaped bending strip on one side of the connecting tail plate 5621 is fixed to the inner surface of the oblique inward extrusion anti-sliding block 56 The connecting tail plate 5621 is connected, and one end of the L-shaped bending strip on the other side of the connecting tail plate 5621 is fixedly connected to the outer surface of the adhesive pad 561. Protective baffles are respectively provided on both sides of the connecting tail plate 5621. The protective baffles are fixedly installed on one side of the connecting locking block 562. The connecting tail plate 5621 is fixedly installed on one side of the connecting locking block 562. The connecting tail plate 5621 is an L-shaped bending strip that is symmetrical up and down. One end of the L-shaped bending strip on one side of the connecting tail plate 5621 is fixedly connected to the inner surface of the anti-sliding block 56 that is extruded obliquely inward, and one end of the L-shaped bending strip on the other side of the connecting tail plate 5621 is fixedly connected to the outer surface of the adhesive pad 561. Protective baffles are respectively provided on both sides of the connecting tail plate 5621. The protective baffles are fixedly installed on one side of the connecting locking block 562. The connecting locking block 562 is movably installed with a protruding locking head 5624 inside, and one end of the protruding locking head 5624 is symmetrically provided with a groove, and the inner side of the L-shaped bending strip connecting the tail plate 5621 is symmetrically provided with a bite semicircular block adapted to the protruding locking head 5624, and the other end side surface of the protruding locking head 5624 contacts the side surface of the extruded triangular block 1 5622 and the extruded triangular block 2 5623, and the inner two side surfaces of the connecting locking block 562 are symmetrically rotatably installed with inclined pressure plates 5625, and the side wall of the protruding locking head 5624 is provided with a card groove adapted to the inclined pressure plate 5625, and a bent gasket 5626 is fixedly installed between one side surface of the inclined pressure plate 5625 and the inner side surface of the connecting locking block 562; in this embodiment, the connecting locking The connecting tail plate 5621 at the tail end of the block 562 serves to connect the obliquely inward extrusion anti-sliding block 56 and the adhesive pad 561. After the high-speed shaft fixing half hoop 1 52 and the high-speed shaft fixing half hoop 2 521 tighten the two ends of the high-speed shaft of the wind turbine gearbox, the obliquely inward extrusion anti-sliding block 56 gathers together, and the extrusion triangular block 1 5622 and the extrusion triangular block 2 5623 produce pressure when tightening, and extrude the extended locking head 5624, so that the front end of the extended locking head 5624 is inserted into the tail of the adjacent connecting tail plate 5621 for bite fixation, and the tail connection produces a self-locking effect, so that the adhesive pads 561 and the adhesive pads 561 are tightly attached to the surface of the high-speed shaft, increasing the friction contacting with the high-speed shaft to avoid loosening, and improving the stability after fixation;In this embodiment, when the tooling needs to be removed after being hoisted to the destination, the telescopic rod 2 55 is extended to push the connecting block 541 inward to loosen the cross locking ring 54. At this time, the reset spring rod 53 cancels the pulled state and drives the high-speed shaft fixed half hoop 1 52 and the high-speed shaft fixed half hoop 2 521 to separate to both sides to reset, and the oblique inward extrusion anti-sliding block 56 is loosened, so that the extrusion force between the oblique inward extrusion anti-sliding block 56 and the oblique inward extrusion anti-sliding block 56 disappears. Under the elastic extrusion of the bending gasket 5626, the oblique pressure plate 5625 pushes the extended locking head 5624 inward to move the extended locking head 5624 until the oblique pressure plate 5625 is stuck in the side of the extended locking head 5624 to complete the reset. At this time, the fixed outer frame 51 moves to withdraw from both ends of the high-speed shaft to complete the disassembly. ;

[0036] Example 3, please refer to Figures 1 to 14 On the basis of the second embodiment, in order to increase the friction between the adhesion pad 561 and the surface of the high-speed shaft, this embodiment further proposes that the inner surface of the adhesion pad 561 is movably installed with anti-slip deformation claws 5611, and elastic bending strips are arranged between the anti-slip deformation claws 5611. In this embodiment, the anti-slip deformation claws 5611 are movably installed on the inner surface of the adhesion pad 561. When the adhesion pad 561 is attached to the surface of the high-speed shaft, it will automatically twist according to the locking posture to produce a certain bayonet effect on the high-speed shaft, thereby increasing the friction so that the anti-sliding block 56 that is squeezed inward obliquely is not easy to loosen after being locked.

[0037] Example 4, please refer to Figures 1 to 14 On the basis of the third embodiment, in order to make the installation of the lifting tooling more convenient, the present embodiment further proposes that a connecting steel cable 43 is symmetrically arranged above the lifting tooling frame 4, and the upper ends of the connecting steel cables 43 are respectively fixedly connected to the lower ends of the lifting connectors 3, and a mobile platform 41 is symmetrically and slidably installed on the two side surfaces of the lifting tooling frame 4, and a telescopic rod 42 is fixedly installed in the middle of the upper surface of the lifting tooling frame 4, and two groups of telescopic rods 42 are relatively arranged, and one end of the two groups of telescopic rods 42 is fixedly connected to the upper side surface of the mobile platform 41, and a motor 411 is fixedly installed on the outer side of the mobile platform 41, and a fixed outer frame The outer surface of the rotating shaft of the frame 51 is rotatably connected to the inner wall of the mobile platform 41 through a bearing, and one end of the rotating shaft of the fixed outer frame 51 is fixedly connected to the output shaft of the motor 411; in this embodiment, the connecting steel cable 43 is installed at the four corners above the lifting tooling frame 4 to increase the stability of the fixation with the lifting connector 3. In addition, the telescopic rod 42 can pull the mobile platform 41 back and forth, which is convenient for the installation and disassembly of the fixed outer frame 51. Secondly, the motor 411 can drive the fixed outer frame 51 to rotate, so that the fixed outer frame 51 can cooperate to complete the automatic installation and tightening of the high-speed shaft under different installation angles.

[0038] For example 5, please refer to Figures 1 to 14On the basis of the third embodiment, in order to make the high-speed shaft more stable during the lifting process, this embodiment further proposes that a triangular balance frame 31 is symmetrically fixedly installed on the outer surface of the lifting connector 3. The triangular balance frame 31 is in the shape of a four-leaf clover. In this embodiment, the triangular balance frame 31 can complete the pulling and balancing of the lifting connector 3 from four different angles to avoid the shaking of the lifting connector 3 during the lifting process. The triangular balance frame 31 needs to be installed and used in conjunction with the sling. The specific sling position is not drawn in the attached figure, and it can be flexibly installed and used in actual use.

[0039] Example 6, please refer to Figures 1 to 14 On the basis of the fifth embodiment, this embodiment further proposes a method for lifting a high-speed shaft of a wind turbine gearbox, comprising the following steps: Step 1, installing and fixing both ends of the high-speed shaft of the wind turbine gearbox. During installation, the telescopic rod 1 42 pulls the mobile platform 41 to move inward, passes the fixed outer frame 51 through both ends of the high-speed shaft of the wind turbine gearbox, and then controls the telescopic rod 2 55 to work and contract to pull the connecting block 541 to both sides, so that the cross locking ring 54 is cross-locked, so that the high-speed shaft fixing half hoop 2 521 and the high-speed shaft fixing half hoop 1 52 are tightened to tighten the high-speed shaft of the wind turbine gearbox to complete automatic fixation; Step 2, lifting, the lifting equipment 1 and the double sling 2 With the cooperation of the winding equipment, the lifting connector 3 is lifted and lifted; step three, dismantle after lifting is completed. When the workpiece needs to be removed after lifting to the destination, the telescopic rod 2 55 is extended to push the connecting block 541 to move inward to loosen the cross locking ring 54. At this time, the reset spring rod 53 cancels the pulled state and drives the high-speed shaft fixed half hoop 1 52 and the high-speed shaft fixed half hoop 2 521 to separate to both sides to reset, and the oblique inward extrusion anti-sliding block 56 is loosened, so that the extrusion force between the oblique inward extrusion anti-sliding block 56 and the oblique inward extrusion anti-sliding block 56 disappears. At this time, the telescopic rod 1 42 pushes the mobile platform 41 to move outward, so that the fixed outer frame 51 moves out of the two ends of the high-speed shaft to complete the disassembly.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting tool for a high-speed shaft of a wind turbine gearbox, comprising a lifting device (1), a double sling (2) being arranged above the lifting device (1), and a winding device adapted for the double sling (2) being arranged at the bottom of the lifting device (1), characterized in that: A lifting connector (3) is provided at one end of the double sling (2), a lifting fixture frame (4) is provided below the lifting connector (3), a high-speed shaft lifting fixture assembly (5) is provided below the lifting fixture frame (4), the high-speed shaft lifting fixture assembly (5) comprises a fixed outer frame (51), a high-speed shaft fixed half hoop 1 (52) and a high-speed shaft fixed half hoop 2 (521) are provided inside the fixed outer frame (51), oblique inward extrusion anti-sliding blocks (56) are evenly distributed on the inner sides of the high-speed shaft fixed half hoop 1 (52) and the high-speed shaft fixed half hoop 2 (521), the oblique inward extrusion anti-sliding blocks (56) are obliquely 30° in the shape of a twisted curved surface, and are disposed between the high-speed shaft fixed half hoop 2 (521) and the high-speed shaft fixed half hoop 2 (521). When the fixed half hoop (52) is clamped against the high-speed shaft of the wind turbine gearbox, it fits the surface thereof to generate more contact surfaces. An adhesive pad (561) is provided at the middle part of the inner side of the oblique inward extrusion anti-sliding block (56). A connecting locking block (562) is provided between the outer surface of the adhesive pad (561) and the inner surface of the oblique inward extrusion anti-sliding block (56). Anti-skid filling pads (563) are provided at both ends of the adhesive pad (561). The anti-skid filling pads (563) are fixedly bonded to the inner surface of the oblique inward extrusion anti-sliding block (56). A connecting tail plate (5621) is fixedly installed on one side of the connecting locking block (562). The connecting tail plate (5621) is an L-shaped bending strip that is symmetrical up and down. One side of the connecting tail plate (5621) is L-shaped. One end of the bending strip is fixedly connected to the inner surface of the obliquely inward extrusion anti-sliding block (56); one end of the L-shaped bending strip on the other side of the connecting tail plate (5621) is fixedly connected to the outer surface of the adhesive pad (561); protective baffles are respectively arranged on both sides of the connecting tail plate (5621); the protective baffles are fixedly installed on one side of the connecting locking block (562); an extrusion triangular block 1 (5622) is movably installed on the inner wall of one side of the connecting locking block (562); an extrusion triangular block 2 (5623) is movably installed on the inner wall of the other side of the connecting locking block (562); one end of the extrusion triangular block 1 (5622) is fixedly connected to the inner surface of the obliquely inward extrusion anti-sliding block (56); one end of the extrusion triangular block 2 (5623) is fixedly connected to the inner surface of the obliquely inward extrusion anti-sliding block (56); The end is fixedly connected to the outer surface of the adhesive pad (561), the connecting locking block (562) is movably installed with a protruding locking head (5624) inside, one end of the protruding locking head (5624) is symmetrically provided with a groove, the inner side of the L-shaped bending strip of the connecting tail plate (5621) is symmetrically provided with a bite semicircular block adapted to the protruding locking head (5624), the other end side surface of the protruding locking head (5624) is in contact with the side surface of the extruded triangular block 1 (5622) and the extruded triangular block 2 (5623), the inner two side surfaces of the connecting locking block (562) are symmetrically rotatably installed with an inclined pressure plate (5625), and the side wall of the protruding locking head (5624) is provided with a card slot adapted to the inclined pressure plate (5625),A bending gasket (5626) is fixedly installed between one side surface of the oblique pressure plate (5625) and the inner surface of the connecting locking block (562), and an anti-slip deformation claw (5611) is movably installed on the inner surface of the adhesive pad (561). An elastic bending strip is arranged between the anti-slip deformation claws (5611). The anti-slip deformation claw (5611) is movably installed on the inner surface of the adhesive pad (561). When the adhesive pad (561) is attached to the surface of the high-speed shaft, it will automatically twist according to the locking posture to produce a certain bayonet effect on the high-speed shaft, thereby increasing the friction force so that the anti-slip block (56) that is squeezed inward obliquely is not easy to loosen after being locked.

2. The lifting tool for the high-speed shaft of a wind turbine gearbox according to claim 1, characterized in that: The high-speed shaft fixed half hoop 1 (52) and the high-speed shaft fixed half hoop 2 (521) are symmetrically arranged on the inner side of the fixed outer frame (51); the lower ends of the high-speed shaft fixed half hoop 1 (52) and the high-speed shaft fixed half hoop 2 (521) are respectively rotatably connected to the bottom of the inner surface of the fixed outer frame (51); the oblique inward extrusion anti-sliding block (56) is fixedly installed on the inner side of the high-speed shaft fixed half hoop 1 (52) and the high-speed shaft fixed half hoop 2 (521); a cross locking ring (54) is arranged in the middle of the outer surface of the oblique inward extrusion anti-sliding block (56); and a connecting block (541) is symmetrically and movably installed on the upper end of the cross locking ring (54).

3. The lifting tool for the high-speed shaft of a wind turbine gearbox according to claim 2, characterized in that: A second telescopic rod (55) is symmetrically fixedly installed above the inner surface of the fixed outer frame (51), one end of the second telescopic rod (55) is fixedly connected to the side surface of the connecting block (541), and a return spring rod (53) is arranged below the second telescopic rod (55), one end of the return spring rod (53) is hinged to the inner surface of the fixed outer frame (51), and the other end of the return spring rod (53) is respectively hinged to the outer surfaces of the second high-speed shaft fixed half hoop (521) and the first high-speed shaft fixed half hoop (52).

4. The lifting tool for the high-speed shaft of a wind turbine gearbox according to claim 1, characterized in that: A connecting steel cable (43) is symmetrically arranged above the lifting tool frame (4), and the upper ends of the connecting steel cables (43) are respectively fixedly connected to the lower ends of the lifting connectors (3). A mobile platform (41) is symmetrically and slidably installed on both side surfaces of the lifting tool frame (4). A telescopic rod (42) is fixedly installed in the middle of the upper surface of the lifting tool frame (4). Two groups of telescopic rods (42) are arranged opposite to each other, and one end of the two groups of telescopic rods (42) is fixedly connected to the upper side surface of the mobile platform (41).

5. The lifting tool for the high-speed shaft of a wind turbine gearbox according to claim 4, characterized in that: A motor (411) is fixedly mounted on the outer side of the mobile platform (41); the outer surface of the rotating shaft of the fixed outer frame (51) is rotatably connected to the inner wall of the mobile platform (41) via a bearing; and one end of the rotating shaft of the fixed outer frame (51) is fixedly connected to the output shaft of the motor (411).

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