CN114803813A

CN114803813A - Lifting appliance

Info

Publication number: CN114803813A
Application number: CN202110123859.1A
Authority: CN
Inventors: 沈星星; 单翔; 周厚成
Original assignee: Guangdong Jinfeng Technology Co ltd
Current assignee: Guangdong Jinfeng Technology Co ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2022-07-29

Abstract

The utility model provides a hoist for hoist and mount wind generating set's wheel hub, the hoist includes: a cross beam; the upper end of the longitudinal beam is connected to the cross beam; a pivot shaft extending substantially parallel to the cross member and rotatably supported to a lower end of the side member; the rotating module comprises a connecting disc for connecting a part to be lifted, and the connecting disc is connected to the first end of the pivot shaft; the lifting appliance comprises a pivot shaft and a rotating module which is connected to the pivot shaft and can rotate along with the pivot shaft, the rotating module can be connected with a part to be lifted so as to drive the part to be lifted to rotate or turn over even through the rotation of the pivot shaft, so that the difficulty of the lifting process is reduced, and the installation efficiency is improved.

Description

Lifting appliance

Technical Field

The utility model belongs to the technical field of engineering machine tool, especially, relate to a wheel hub hoist for hoisting wind generating set.

Background

At present, a mainstream installation mode of an offshore wind generating set is single-blade hoisting, and the single-blade hoisting comprises machine head integral single-blade hoisting and machine head split single-blade hoisting. The integral single-blade hoisting of the machine head is realized, namely, the engine room, the generator and the hub are assembled in a factory and leave a factory integrally, the three parts of the assembly are hoisted integrally after arriving at a position of an offshore machine, and finally, each blade is independently installed; the machine head is hoisted in a split single-blade mode, namely, the engine room, the generator and the hub are not preassembled in a factory, three parts leave a factory and are respectively hoisted after arriving at the position of the offshore machine, and finally, each blade is independently installed.

The installation mode of the machine head split single-blade type hoisting has lower requirements on the installation ship, for example, the installation mode can be suitable for the installation ship with the main hoisting capacity lower than 800t, and has better economy.

However, in the process of the machine head split single-blade type hoisting, the hub is transported to the machine position in a standing mode, the hub needs to be turned over for 90 degrees on a deck of an installation ship and then butt jointed with a generator in the air during hoisting, two cranes are usually needed to be matched in the turning process, and the crane resources are occupied due to the fact that the installation process is long in duration.

Disclosure of Invention

One of the main objects of the present disclosure is to provide a lifting appliance to simplify the lifting process of the component to be lifted and improve the installation efficiency.

Aiming at the above purpose, the present disclosure provides the following technical solutions:

in one aspect of the present disclosure, a lifting appliance is provided for lifting a hub of a wind turbine generator system, the lifting appliance includes: a cross beam; the upper end of the longitudinal beam is connected to the cross beam; a pivot shaft extending substantially parallel to the cross member and rotatably supported to a lower end of the side member; the rotating module comprises a connecting disc for connecting a part to be lifted, and the connecting disc is connected to the first end of the pivot shaft; and the driving assembly is connected to the pivot shaft so as to drive the connecting disc to rotate by driving the pivot shaft.

The connecting disc of the rotating module is connected to the pivot shaft, the pivot shaft is driven to rotate through the driving assembly so as to drive the connecting disc to rotate together, and the hub is driven to turn over through the rotation of the driving pivot shaft and can be in butt joint with a generator of the wind generating set due to the fact that the hub is connected to the connecting disc. Compared with the technical scheme that the wheel hub is lifted and overturned by two lifting appliances in the prior art, the lifting appliance provided by the disclosure is simpler in structure, and the installation efficiency of the wheel hub is improved.

Further, the driving component drives the pivot shaft to rotate so as to drive the connecting coil to rotate around the pivot shaft by a preset angle, and the preset angle is not less than 90 degrees.

Optionally, the second end of the pivot shaft protrudes from the longitudinal beam, the driving assembly includes a rotating plate fixed to the second end of the pivot shaft and a first telescopic member connected to the rotating plate, the first end of the first telescopic member is connected to the longitudinal beam or the cross beam, and the second end of the first telescopic member is connected to the rotating plate, so that the pivot shaft is driven to rotate by the telescopic movement of the first telescopic member.

In another exemplary embodiment of the present disclosure, the number of the first telescopic members is two, and the first telescopic members are respectively connected to two ends of the pivot shaft in the radial direction.

Optionally, the spreader further comprises a tilt angle adjusting unit for adjusting a tilt angle of the connecting disc relative to the pivot axis.

More specifically, the inclination adjustment unit includes: the connecting shaft is rotatably arranged at the first end of the pivoting shaft, the connecting shaft is perpendicular to the pivoting shaft, the connecting disc is fixedly connected to the connecting shaft, the worm wheel and the worm are fixedly connected to one end of the connecting shaft, the worm is meshed with the worm wheel, and the worm is connected to the pivoting shaft through the base; and the first motor is used for driving the worm to rotate.

Further, the lifting appliance further comprises a first controller and a first angle sensor, the first angle sensor is used for monitoring the inclination angle of the connecting disc, and the first controller controls the start and stop of the inclination angle adjusting unit according to the angle information of the first angle sensor.

According to another exemplary embodiment of the present disclosure, the spreader further comprises a longitudinal beam driving module, the longitudinal beam driving module comprises a sliding block sliding along the extending direction of the cross beam and a second telescopic member for driving the sliding block to slide, and the first end of the longitudinal beam is fixed to the bottom of the sliding block.

Optionally, the spreader further comprises a movable shackle assembly comprising a shackle slidably connected to the cross beam and a shackle drive assembly for driving movement of the shackle.

Further, the lifting lug driving assembly comprises a lead screw and a second motor for driving the lead screw to rotate, the lead screw is arranged on the cross beam and extends parallel to the cross beam, the lifting lug is provided with a threaded hole matched with the lead screw, and the lead screw is driven by the second motor to rotate so as to drive the lifting lug to reciprocate along the length direction of the cross beam.

Further, the lifting appliance further comprises a second angle sensor and a second controller, the second angle sensor is used for monitoring an included angle between the cross beam and the horizontal plane, and the second controller controls the lifting lug driving assembly to start and stop according to angle information of the second angle sensor.

According to another exemplary embodiment of the present disclosure, the lifting appliance further includes a weight block and at least one cable wind ring, the weight block is disposed at a far end of the cross beam relative to the longitudinal beam.

Specifically, the connecting disc is circular and is provided with a connecting flange used for being connected with a variable pitch bearing on a hub of the wind generating set or a flange connected with the variable pitch bearing.

The lifting appliance provided by the disclosure at least has the following beneficial effects: the lifting appliance comprises a pivot shaft and a rotating module which is connected to the pivot shaft and can rotate along with the pivot shaft, the rotating module can be connected with a part to be lifted, and the rotating module drives the part to be lifted to rotate or turn over through the rotation of the pivot shaft, so that the difficulty of a lifting process is reduced, and the installation efficiency is improved.

Drawings

The above and/or other objects and advantages of the present disclosure will become more apparent from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

fig. 1 is a block diagram of a spreader according to an exemplary embodiment of the present disclosure.

Fig. 2 is a structural view illustrating a combination of the driving assembly and the rotation module in fig. 1.

Fig. 3 is a state diagram of the hanger and the hub in fig. 1.

Fig. 4 is a diagram of the use state of turning over the spreader driving hub in fig. 1.

Description of reference numerals:

1. a cross beam; 2. A stringer; 3. A rotation module;

4. a balancing weight; 5. A cable wind ring; 6. A second angle sensor;

7. a power supply unit; 8. A control cabinet; 9. Lifting lugs;

10. a lead screw; 11. A second motor; 12. A second telescoping member;

13. a slider; 16. A first slide rail; 17. A second slide rail;

21. a first telescoping member; 22. Rotating the disc; 23. A support;

24. a pivotal shaft; 25. A bearing; 27. An end cap;

29. a connecting shaft; 30. A connecting disc; 31. A first angle sensor;

34. a turbine; 35. A worm; 36. A first motor;

37. a base; 38. A hub.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, it should not be understood that the embodiments of the present disclosure are limited to the embodiments set forth herein. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

The state of the hub when transported to the site by the transport tooling, which is referred to in this disclosure as the upright state of the hub 38, is a standing sitting on the transport tooling, i.e. the flange of the hub 38 that is connected to the generator of the wind turbine generator set is placed horizontally facing downwards. When the flange face of the hub 38, which is connected to the generator of the wind turbine generator set after the hub 38 is installed in the air, is in a vertical state, the present disclosure refers to this state of the hub 38 as a horizontal state.

Referring to fig. 1, the present disclosure provides a spreader that may be used to hoist and turn a hub 38 on an installation vessel. The lifting appliance comprises a cross beam 1, a longitudinal beam 2, a pivot shaft 24, a rotating module 3 and a driving assembly, wherein the upper end of the longitudinal beam 2 can be connected to the cross beam 1, a mounting hole (not shown) for accommodating the pivot shaft 24 is formed in the lower end of the longitudinal beam 2, and the pivot shaft 24 is rotatably arranged in the mounting hole. The rotating module 3 may comprise a connecting disc 30 for connecting a hub 38, which connecting disc 30 may be connected to the pivot shaft 24. The pivot shaft 24 may be driven by a drive assembly to drive the hub 38 to rotate together through rotation of the pivot shaft 24.

In the present disclosure, the connecting plate 30 of the rotating module 3 is connected to the pivot shaft 24, the pivot shaft 24 is driven to rotate by the driving assembly, so as to drive the connecting plate 30 to rotate together, and the hub 38 is connected to the connecting plate 30, so that the hub 38 can be driven to turn over by driving the pivot shaft 24 to rotate, for example, the hub 38 is butted with a generator of a wind turbine generator system after turning over from a vertical state to a horizontal state in the air. Compared with the technical scheme that the two lifting appliances are used for lifting and overturning the hub 38 in the prior art, the lifting appliance provided by the disclosure is simpler in structure, and the installation efficiency of the hub 38 is improved.

In order to avoid unnecessary bending moment applied to the longitudinal beam 2 in the using process, the transverse beam 1 and the longitudinal beam 2 are arranged approximately vertically, in the using process, the transverse beam 1 is arranged approximately horizontally, a circular mounting hole with the central axis approximately parallel to the transverse beam 1 is arranged at the lower end of the longitudinal beam 2, and as shown in fig. 1, the mounting hole penetrates through the left end and the right end of the longitudinal beam 2, so that the two ends of the pivot shaft 24 are respectively positioned at the left side and the right side of the longitudinal beam 2.

Specifically, the pivot shaft 24 may be configured to protrude from the mounting hole at both ends, wherein the connecting plate 30 for connecting the hub 38 may be mounted at a first end of the pivot shaft 24, and a driving assembly for driving the pivot shaft 24 to rotate may be connected at a second end of the pivot shaft 24, and the driving assembly may drive the pivot shaft 24 to rotate so as to drive the hub 38 to rotate around the pivot shaft 24 through the connecting plate 30. Specifically, the pivot shaft 24 may be mounted in a mounting hole of the side member 2 through a bearing 25, but not limited thereto. In this embodiment, the connecting plate 30 may be connected to the pitch bearing of the hub 38 by fasteners, but not limited thereto.

Referring to fig. 2, the drive assembly may include a rotary plate 22 and a first telescoping member 21, the rotary plate 22 being fixedly attached to a second end of a pivot shaft 24, for example, but not limited to, the central axis of the pivot shaft 24 may be perpendicular to the plane of the rotary plate 22.

Specifically, the rotating disc 22 is provided with an oval shape, a through hole for the second end of the pivot shaft 24 to pass through is formed in the middle of the rotating disc 22, the second end of the pivot shaft 24 passes through the mounting hole of the longitudinal beam 2 and then is inserted into the through hole of the rotating disc 22, and the end cover 27 of the pivot shaft 24 is connected to the rotating disc 22 through a fastener. The two ends of the long shaft of the rotating disc 22 are respectively connected to the lower end of the first telescopic member 21 through hinges, the upper end of the first telescopic member 21 is connected to a bracket 23 through a hinge, and the bracket 23 is fixed on the longitudinal beam 2 or the cross beam 1. The two first telescopic members 21 are alternately extended and shortened to drive the rotary disc 22 to rotate around the centerline axis of the pivot shaft 24, thereby rotating the pivot shaft 24. Preferably, the first telescopic members 21 are two and are respectively connected to two ends of the pivot shaft 24 in the radial direction.

In this embodiment, the driving assembly and the connecting disc 30 are respectively disposed on two sides of the longitudinal beam 2, as shown in fig. 1, the driving assembly is disposed on the right side of the longitudinal beam 2, and the connecting disc 30 is disposed on the left side of the longitudinal beam 2, but not limited thereto, the driving assembly and the connecting disc 30 may be disposed on the same side of the longitudinal beam 2.

In this embodiment, the pivot shaft 24 can rotate around its own axis within a range of ± 90 °, and specifically, the driving assembly drives the pivot shaft 24 to rotate so as to drive the connecting disc 30 to rotate around the central axis of the pivot shaft 24 by a predetermined angle which is not less than 90 °.

In this embodiment, the first expansion element 21 may be a hydraulic cylinder, an air cylinder or a lead screw assembly, but not limited thereto. In addition, in the present embodiment, the pair of first expansion pieces 21 is symmetrically disposed on the rotating disc 22, but not limited thereto, only a single first expansion piece 21 may be disposed on the rotating disc 22.

With the hub 38 in the vertical position, one of the pitch bearings on the hub 38 may be facing the connecting plate 30, the pitch bearing on the hub 38 is fixedly connected to the connecting plate 30, and then the pivot shaft 24 is driven to rotate by the driving assembly, so that the hub 38 may be turned by 90 °, and the flange surface of the pitch bearing of the hub 38 for interfacing with the generator of the wind turbine generator set is adjusted to the vertical direction.

The connecting plate 30 may be directly connected to the pivot shaft 24 such that rotation of the pivot shaft 24 directly rotates the connecting plate 30. However, in general, with the hub 38 in a vertical position, the flange face of the pitch bearing on the hub 38 is typically slightly inclined at an angle relative to the horizontal and therefore cannot be conveniently aligned with the attachment plate 30, and it may be necessary to raise one side of the hub 38 to adjust the flange face of the pitch bearing.

In order to more conveniently align the hub 38 with the connection disc 30 without additionally adding a step of adjusting the inclination angle of the pitch bearing of the hub 38, the spreader of the present disclosure is further provided with an inclination angle adjustment unit. Further, as shown in the drawings, in the embodiment provided, the reclining unit may include a connecting shaft 29 rotatably disposed at a first end of the pivot shaft 24, and a central axis of the connecting shaft 29 is perpendicular to a central axis of the pivot shaft 24. The connecting plate 30 is fixedly connected to the connecting shaft 29 so as to be rotatable together with the connecting shaft 29.

The recliner unit further comprises a worm gear 34 and a worm 35, the worm gear 34 being fixedly connected to one end of the connecting shaft 29, the worm 35 being in engagement with the worm gear 34, and the worm 35 being connectable to the pivot shaft 24 via a base 37. Specifically, the base 37 may be formed as a letter-type frame and fixedly coupled to the pivot shaft 24, an upper portion of the letter-type frame may be provided with the worm wheel 34, the worm 35 may be provided at a lower portion of the letter-type frame, and the worm 35 may be driven by the first motor 36. Since the worm wheel 34 is fixedly connected with the connecting shaft 29, the worm 35 drives the worm wheel 34 to rotate so as to drive the connecting shaft 29 to rotate, and therefore the connecting disc 30 can be driven to rotate around the central axis of the connecting shaft 29 together.

In the present disclosure, by fixing the connection disc 30 on the connection shaft 29, the connection disc 30 can be driven to rotate by driving the connection shaft 29 to rotate, so that the taper angle of the pitch bearing of the hub 38 can be adapted to, and the connection disc can be accurately butted with the pitch bearing. The rotation angle of the connecting shaft 29 may be set as desired, for example, but not limited to, the connecting shaft 29 may be rotated within ± 4 ° about its own central axis.

According to the wind generating set, the connecting disc 30 can be driven to rotate around the central axis of the pivot shaft 24 through the rotation of the pivot shaft 24, and the hub 38 can be rotated from a vertical state to a horizontal state so as to be conveniently butted with a generator of the wind generating set. The connecting disc 30 can be driven to rotate around the central axis of the connecting shaft 29 through the rotation of the connecting shaft 29 in the inclination angle adjusting unit so as to adapt to the angle of the variable pitch bearing of the hub 38, and therefore the connection can be accurately butted with a generator of a wind generating set. The hoist in this disclosure can realize the hoist and mount and the upset of wheel hub 38, uses the technical scheme that two hoists coordinate the cooperation and realize the upset of wheel hub 38 among the prior art, and this hoist structure of this disclosure is simpler, and the cost is cheaper, and has improved wheel hub 38's installation effectiveness.

In order to accurately control the rotation angle of the connecting disc 30, a first angle sensor 31 and a first controller are installed on the connecting disc 30, the first angle sensor 31 is used for monitoring the angle between the position of the connecting disc 30 and the target position, and can transmit the angle information to the first controller, and the first controller controls the start and stop of the inclination angle adjusting unit. Specifically, the first controller may be electrically connected to the first angle sensor 31 and the first motor 36, respectively, the first angle sensor 31 transmits angle information to the first controller, and the first controller controls start-stop and operation time of the first motor 36, so that the land 30 may be driven to rotate to a target position. For example, but not limiting of, the first angle sensor 31 may be a tilt sensor.

In order to maintain the balance of the spreader, one end of the cross beam 1 is provided with a counterweight 4, which counterweight 4 is arranged at the far end of the cross beam 1 relative to the longitudinal beam 2. As in fig. 1, the counterweight 4 may be disposed at the left end of the cross beam 1, and the longitudinal beam 2 may be disposed at the right end side of the cross beam 1, in which the left end of the cross beam 1 may be defined as a first end and the right end of the cross beam 1 may be defined as a second end. In the case that the hub 38 is connected to the connecting plate 30, the weight 4 can keep the moment balance at both ends of the beam 1, thereby keeping the overall balance of the spreader and the hub 38.

In order to improve the stability of the spreader during the turning of the hub 38 and to keep the spreader and the hub 38 in overall balance, the spreader further comprises a movable lifting lug assembly comprising lifting lugs 9 slidably connected to the cross beam 1 and a lifting lug driving assembly for driving the lifting lugs 9 to move. Further, the lifting lug driving assembly may include a lead screw 10 and a second motor 11 for driving the lead screw 10 to rotate, the lead screw 10 is disposed on the cross beam 1 and extends parallel to the cross beam 1, the lifting lug 9 has a threaded hole matched with the lead screw 10, and the lead screw 10 is driven by the second motor 11 to rotate so as to drive the lifting lug 9 to reciprocate along the length direction of the cross beam 1.

Specifically, referring to fig. 1, the lifting lug 9, the lead screw 10 and the second motor 11 for driving the lead screw 10 to rotate are arranged on the cross beam 1 along a direction parallel to the cross beam 1, the lifting lug 9 is slidably connected to the cross beam 1, the lifting lug 9 has a threaded hole matched with the lead screw 10, the lead screw 10 is driven by the second motor 11 to rotate so as to drive the lifting lug 9 to move along the axial direction of the lead screw 10, and the movement of the lifting lug 9 can drive the movement of the overall gravity center of the lifting appliance and the hub 38, so that the overall balance of the lifting appliance and the hub 38 can be maintained.

Further, the lifting lug 9 is arranged at the top of the cross beam 1, a first slide rail 16 extending along the extending direction of the cross beam 1 is arranged at the top of the cross beam 1, a slide block portion matched with the first slide rail 16 is arranged at the bottom of the lifting lug 9, and a threaded hole matched with the screw rod 10 is arranged in the middle of the lifting lug 9. The screw 10 may extend parallel to the extension direction of the cross beam 1 and may be arranged at the top of the cross beam 1, to which cross beam 1 a second motor 11 is fixed. In this embodiment, the first slide rail 16 may be formed by recessing the top portions of the two side surfaces of the cross beam 1 in the width direction, but not limited thereto, in fig. 1, the left-right direction of the cross beam 1 is the length direction, the up-down direction is the height direction, and the width direction is perpendicular to both the length direction and the height direction. In this embodiment, the shackle drive assembly may also be a telescoping cylinder, such as, but not limited to, an air cylinder or a hydraulic cylinder.

During the process of turning over the hub 38, the center of gravity will change, and therefore the center of gravity of the hub 38 and the whole hanger will also change, and in order to ensure the balance of the hanger, the lifting lugs 9 can slide on the cross beam 1, so that the whole hanger and hub 38 are balanced.

Further, the lifting appliance can further comprise a second angle sensor 6 and a second controller, the second angle sensor 6 is used for monitoring an included angle between the cross beam 1 and the horizontal plane, and the second controller controls the start and stop of the lifting lug driving assembly according to angle information of the second angle sensor 6. Specifically, the second controller may be electrically connected to the second angle sensor 6 and the second motor 11, respectively, and controls the start and stop of the second motor 11 according to the angle information of the second angle sensor 6. Further, a second angle sensor 6 may be disposed on the top of the end of the beam 1 where the counterweight 4 is disposed, and when an inclination angle occurs between the beam 1 and the horizontal plane, the second angle sensor 6 transmits the monitored inclination angle value to a second controller, and the second controller may start a second motor 11 to operate to drive the lifting lug 9 to move until the beam 1 returns to the horizontal level again.

The longitudinal beam 2 can slide relative to the transverse beam 1 when the longitudinal beam 2 approaches towards the nacelle and enters into the nacelle to connect the pitch bearing of the hub 38, or when the longitudinal beam 2 leaves the nacelle to exit from the nacelle and leaves the hub 38 pitch bearing after the hub 38 has been mounted. Specifically, the spreader further comprises a longitudinal beam driving module, the longitudinal beam driving module comprises a sliding block 13 sliding along the extension direction of the cross beam 1 and a second telescopic part 12 used for driving the sliding block 13 to slide, and the first end of the longitudinal beam 2 is fixed at the bottom of the sliding block 13.

Specifically, the number of the second telescopic parts 12 may be two, and the two second telescopic parts are respectively arranged on two sides of the width direction of the cross beam 1 and extend along the length direction of the cross beam 1, the lower portions of the two sides of the width direction of the cross beam 1 are recessed inwards to form second slide rails 17, the sliding block 13 is slidably disposed on the second slide rails 17, and the top of the longitudinal beam 2 is fixed to the bottom of the sliding block 13 so as to be capable of sliding along the second slide rails 17 along with the sliding block 13. Further, the two second telescopic members 12 may be operated synchronously to drive the connecting disc 30 together closer to or further away from the nacelle.

In this embodiment, the second slide rail 17 may be disposed parallel to the first slide rail 16, and the second slide rail 17 may be disposed below the first slide rail 16, but not limited thereto.

The first end of second extensible member 12 is close to the first end setting of crossbeam 1 to fixed connection is on crossbeam 1, and the second end of second extensible member 12 is close to the second end of crossbeam 1, and the slider 13 cover is established on second slide rail 17, and the second end of second extensible member 12 is connected to on the slider 13. When the connecting disc 30 needs to be close to a generator of the wind generating set, the two second telescopic parts 12 can be simultaneously contracted, the sliding block 13 slides towards the direction of the cabin, the hub 38 is driven to be close to the cabin, and after the hub 38 is accurately butted with the generator in the cabin and the connection is completed, the two second telescopic parts 12 can be simultaneously extended out, so that the connecting disc 30 is far away from the cabin.

The lifting appliance of the present disclosure further includes a power supply unit 7 and a control cabinet 8, wherein the power supply unit 7 and the control cabinet 8 may be installed at the first end of the cross beam 1, the power supply unit 7 may be used to provide power to the entire lifting appliance, and the control cabinet 8 may be used to integrate various electrical components to control and detect the functions of the entire lifting appliance system. For example, but not limited to, the power supply unit 7 may be a diesel generator.

In this embodiment, the lifting appliance further includes at least one cable ring 5, the number of the cable rings 5 can be set according to actual needs, and the two cable rings 5 are illustrated in the drawing as an example. Two cable rings 5 may be arranged at both ends of the beam 1, wherein only the cable ring 5 at the second end of the beam 1 is shown in fig. 1, the cable ring 5 at the first end of the beam 1 not being shown due to being shielded by the power supply unit 7. When the hanger hoists the hub 38, the mechanical cable on the installation vessel can be directly connected to the cable ring 5 of the beam 1 to maintain the stability of the hanger when the hub 38 is installed.

Referring to fig. 3 and 4, in particular, the use process of the spreader can be described as follows: before the hub 38 is hoisted, the sling of the sling can be connected to the lifting lug 9 through a shackle, the sling is moved to a position right above the hub 38 and falls down until the connecting disc 30 can be in butt joint with one pitch bearing of the hub 38. The second telescopic element 12 acts, the whole of the longitudinal beam 2 and the rotating module 3 approaches and enters the inside of the fairing, for example but not limited to, this action can be controlled by operating a remote control handle. The first motor 36 is started to rotate the connecting shaft 29 by a predetermined angle under the driving of the worm gear assembly until the pitch bearing of the hub 38 can be matched with the connecting disc 30 in angle, for example, but not limited to, when the angle between the flange surface of the pitch bearing of the hub 38 and the horizontal plane is 4 °, the angle between the connecting disc 30 and the pitch bearing can be displayed through the control panel, and the inclination angle of the connecting disc 30 is 4 °.

The second telescopic part 12 acts again, the longitudinal beam 2 and the rotating module 3 integrally continue to approach the hub 38 until the flange surface of the connecting disc 30 is tightly attached to the flange surface of the variable pitch bearing, the connecting bolt is installed, fastening torque is applied, and at this time, the lifting appliance and the hub 38 are in a combined state, as shown in fig. 3. The second motor 11 is driven to act, the lead screw 10 is driven to move to the position of the whole theoretical gravity center with the lifting lug 9, and the hub 38 is prevented from inclining in the initial hoisting period. At the moment, the mechanical wind-pulling stable lock hook falls down to be connected with the cable wind ring 5 on the cross beam 1, and after the hub 38 is lifted, the mechanical wind-pulling can control the lifting appliance to ensure the stability of the hub 38 during lifting.

The lifting appliance slowly lifts the hub 38, when the lifting height of the hub 38 is about 5m away from the deck of the installation ship, the first motor 36 is started to drive the rotating disc 22 to rotate so as to drive the pivoting shaft 24 to rotate, the pivoting shaft 24 drives the whole connecting disc 30 to rotate, and the hub 38 is driven to turn over by driving the rotating disc 22 to rotate, so that the hub 38 can be turned over from the vertical state to the horizontal state, as shown in fig. 4.

In the whole overturning process, the gravity center of the hub 38 is changed continuously, so that the whole gravity center of the hub 38 and the lifting appliance is also changed continuously, and in order to ensure that the whole body does not incline, the second angle sensor 6 on the cross beam 1 is matched with the second motor 11 to drive the lifting lug 9 to move, so that the whole lifting appliance is kept horizontal. The second telescopic element 12 is actuated again, the longitudinal beam 2 and the rotating module 3 are moved away from the pod as a whole, and the spreader is lowered to the deck of the installation vessel until the hub 38 is installed. Only one lifting appliance is needed in the whole process, redundant accessories do not need to be installed and removed, and the hub 38 is high in installation efficiency and small in time consumption.

The lifting appliance provided by the disclosure comprises a rotating module 3, wherein the rotating module 3 can be used for driving a hub 38 to turn over, so that the hub 38 in a vertical state can be turned over to be in a horizontal state, the number of lifting appliances is reduced, and the installation efficiency of the hub 38 is improved.

Except this, the hoist still includes balancing weight 4, and balancing weight 4 and rotation module 3 arrange respectively at the both ends of crossbeam 1, when rotating and being connected with wheel hub 38 on the module 3, this balancing weight 4 can balance the holistic focus of hoist and wheel hub 38 constitution to keep the balance of hoist.

This hoist have portable lug subassembly, at wheel hub 38 upset in-process, portable lug subassembly can cooperate in order to realize the balanced function of automatic adjustment focus with second angle sensor 6, simple structure reduces the cost of labor.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present disclosure, "a plurality" means two or more unless otherwise specified.

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

The described features, structures, or characteristics of the disclosure may be combined in any suitable manner in one or more embodiments. In the above description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.

Claims

1. A lifting appliance for lifting a hub (38) of a wind power plant, the lifting appliance comprising:

a cross beam (1);

the upper end of the longitudinal beam (2) is connected to the cross beam (1);

a pivot shaft (24) extending substantially parallel to the cross beam (1) and rotatably supported to the lower end of the longitudinal beam (2);

the rotating module (3) comprises a connecting disc (30) used for connecting a part to be lifted, and the connecting disc (30) is connected to the first end of the pivot shaft (24);

the driving assembly is connected to the pivot shaft (24) and drives the connecting disc (30) to rotate by driving the pivot shaft (24).

2. The spreader according to claim 1, wherein the drive assembly drives the pivot shaft (24) to rotate to bring the connection disc (30) to rotate about the pivot shaft (24) by a predetermined angle, which is not less than 90 °.

3. The spreader according to claim 1, wherein the second end of the pivot shaft (24) protrudes from the longitudinal beam (2), the drive assembly comprises a rotary plate (22) fixed to the second end of the pivot shaft (24) and a first telescopic member (21) connected to the rotary plate (22), a first end of the first telescopic member (21) is connected to the longitudinal beam (2) or the transverse beam (1), and a second end of the first telescopic member (21) is connected to the rotary plate (22) to drive the pivot shaft (24) to rotate by telescoping of the first telescopic member (21).

4. The spreader according to claim 3, wherein the first telescopic member (21) is two and is connected to both radial ends of the pivot shaft (24).

5. The spreader according to claim 1, further comprising a tilt angle adjustment unit for adjusting the tilt angle of the connection disc (30) with respect to the pivot axis.

6. The spreader of claim 5, wherein the tilt angle adjustment unit comprises:

the connecting shaft (29) is rotatably arranged at the first end of the pivot shaft (24), the connecting shaft (29) is perpendicular to the pivot shaft (24), and the connecting disc (30) is fixedly connected to the connecting shaft (29);

a worm wheel (34) and a worm screw (35), wherein the worm wheel (34) is fixedly connected to one end of the connecting shaft (29), the worm screw (35) is meshed with the worm wheel (34), and the worm screw (35) is connected to the pivot shaft (24) through a base;

the first motor is used for driving the worm (35) to rotate.

7. The spreader according to claim 5, further comprising a first controller and a first angle sensor (31), wherein the first angle sensor (31) is used for monitoring the tilt angle of the connection disc (30), and the first controller controls the start and stop of the tilt angle adjusting unit according to the angle information of the first angle sensor (31).

8. The spreader according to any of the claims 1-7, further comprising a stringer drive module, said stringer drive module comprising a slider sliding in the extension direction of said cross beam (1) and a second telescopic element (12) for driving said slider to slide, said stringer (2) being fixed at a first end to the bottom of said slider.

9. The spreader according to any of the claims 1-7, further comprising a movable shackle assembly comprising a shackle (9) slidably connected to the beam (1) and a shackle driving assembly for driving movement of the shackle (9).

10. The spreader according to claim 9, wherein the lifting lug driving assembly comprises a lead screw (10) and a second motor (11) for driving the lead screw (10) to rotate, the lead screw (10) is arranged on the cross beam (1) and extends parallel to the cross beam (1), the lifting lug (9) has a threaded hole matched with the lead screw (10), and the lead screw (10) is driven by the second motor (11) to rotate so as to drive the lifting lug (9) to reciprocate along the length direction of the cross beam (1).

11. The spreader according to claim 9, further comprising a second angle sensor (6) and a second controller, wherein the second angle sensor (6) is used for monitoring an angle between the cross beam (1) and a horizontal plane, and the second controller controls the start and stop of the lifting lug driving assembly according to the angle information of the second angle sensor (6).

12. The spreader according to claim 11, further comprising a weight (4) and a windage ring (5), the weight (4) being arranged on the cross beam (1) at a distal end with respect to the longitudinal beam (2), the windage ring (5) being at least one.

13. The spreader according to any of the claims 1-7, wherein the connection disc (30) is circular ring shaped with a flange for connection to a pitch bearing or a connection flange of a pitch bearing on a hub (38) of a wind park.