CN110562861A - lifting maintenance device and wind driven generator - Google Patents

Abstract

The invention discloses a lifting maintenance device and a wind power generator, belonging to the technical field of wind power generation. The lifting maintenance device provided by the present invention includes a supporting mechanism, a guiding mechanism, a rotating mechanism and a hoisting assembly. The guiding mechanism includes vertical beams and longitudinal beams. The rotating mechanism is rotatably connected to the guiding mechanism. The hoisting assembly is used for lifting The parts to be hoisted, and the hoisting assembly can slide on the guiding mechanism and the rotating mechanism. The lifting maintenance device is installed in the nacelle of the wind power generator, not only can lift the damaged parts in the nacelle of the wind power generator and the new parts outside the nacelle at any time according to the demand, it is beneficial to improve the efficiency of maintenance and replacement, and it is not affected by the lifting process. The impact of external weather conditions can better meet the needs of use. In addition, the hoisting and maintenance device has a hoisting assembly that can slide on the guide mechanism and the rotation mechanism, thereby increasing the hoisting range and improving the versatility.

Description

Lifting maintenance device and wind power generator

technical field

The invention relates to the technical field of wind power generation, in particular to a lifting maintenance device and a wind power generator.

Background technique

With the gradual deterioration of the energy situation, wind energy, as a renewable and non-polluting natural energy, has gradually received attention. A wind turbine is a device that converts wind energy into electrical energy, and a wind turbine gearbox is an essential component of a wind turbine. When the wind turbine is in use, it needs to be installed high above the ground. The wind turbine gearbox is located in the nacelle of the wind turbine generator. When the shafting components on the wind turbine gearbox are damaged and need to be repaired, the existing technology generally rents a ground crane and uses the ground The crane lifts the new shafting components to the nacelle, and then repairs and replaces the wind power gearbox.

However, renting a ground crane to replace the shafting parts of the gearbox has the following disadvantages: 1. The rental cost of the ground crane is very high; 2. The ground crane is greatly affected by the weather (the wind speed exceeds 10m/s and cannot be hoisted, and it cannot be hoisted when it rains) ; 3. It is necessary to set up the tooling frame on site. Because the tooling frame is complex to set up and the construction time is long, the efficiency of maintenance and replacement is low.

Therefore, how to propose a lifting maintenance device that overcomes the above-mentioned shortcomings is a technical problem that needs to be solved urgently.

Contents of the invention

The object of the present invention is to provide a lifting maintenance device and a wind power generator. The lifting maintenance device has low manufacturing cost, is not affected by weather conditions, has strong operability, and has high maintenance and replacement efficiency.

For reaching this purpose, the present invention adopts following technical scheme:

A lifting maintenance device is configured in the nacelle of a wind power generator, the lifting maintenance device includes:

a supporting mechanism arranged in the engine room;

a guide mechanism, the guide mechanism includes a crossbeam and a longitudinal beam, the crossbeam and the longitudinal beam are vertically arranged, and both are arranged on the top surface of the support mechanism;

a rotating mechanism, one end of the rotating mechanism is rotatably connected to the guiding mechanism;

The hoisting assembly is used to lift the piece to be hoisted in the vertical direction, the hoisting assembly is configured to be able to slide on the guiding mechanism and the rotating mechanism.

Preferably, the hoisting assembly includes a first hoisting mechanism, a second hoisting mechanism and a third hoisting mechanism, the first hoisting mechanism is slidably arranged on the beam, and the second hoisting mechanism is slidably arranged on the longitudinal beam Above; the third hoisting mechanism is slidably disposed on the rotating mechanism, and the piece to be hoisted is configured to be transferable between the first hoisting mechanism, the second hoisting mechanism and the third hoisting mechanism.

Preferably, the crossbeam is in the shape of an "I", and the first hoisting mechanism is stuck on the lower crossplate of the crossbeam and can move along the lower crossplate of the crossbeam;

The longitudinal beam is in the shape of an "I", and the second hoisting mechanism is stuck on the lower transverse plate of the longitudinal beam and can move along the lower transverse plate of the longitudinal beam.

Preferably, the rotating mechanism includes a rotary shaft and a cantilever, the rotary shaft is rotatably set on the guide mechanism, one end of the cantilever is fixedly connected to the rotary shaft, and the third hoisting mechanism is slidably set on the on the cantilever.

Preferably, the rotating mechanism further includes an upper mounting plate and a lower mounting plate, the upper mounting plate is arranged on the upper part of the guiding mechanism, the lower installing plate is arranged on the lower part of the guiding mechanism, and the upper installing plate Set opposite to the lower mounting plate, the rotary shaft is rotatably connected between the upper mounting plate and the lower mounting plate.

Preferably, the third hoisting mechanism includes a chain hoist and a driving motor, and the driving motor can drive the chain hoist to move on the boom.

Preferably, both the first hoisting mechanism and the second hoisting mechanism include a monorail trolley and a chain block, the monorail trolley is slidably arranged on the beam or the longitudinal beam, and the chain hoist is arranged on the the bottom of the monorail described above.

Preferably, the support mechanism includes a plurality of support bodies, and the plurality of support bodies are respectively used to support the ends of the beam or the longitudinal beam.

Preferably, there are two beams and two longitudinal beams, and the two beams and the two numbers are arranged in a square shape.

Preferably, the part to be hoisted is a gear box.

A wind power generator includes a nacelle, and further includes the above-mentioned lifting maintenance device, and the lifting maintenance device is arranged in the nacelle.

Beneficial effects of the present invention:

The invention provides a lifting maintenance device, the lifting maintenance device includes a support mechanism, a guiding mechanism, a rotating mechanism and a hoisting assembly, the guiding mechanism includes a vertically arranged beam and a longitudinal beam, and the rotating mechanism is rotatably connected to the guiding mechanism, and is used for the hoisting assembly It is used to lift the piece to be hoisted in the vertical direction, and the hoisting assembly can slide on the guide mechanism and the rotation mechanism. The lifting maintenance device is installed in the nacelle of the wind power generator, not only can lift the damaged parts in the nacelle of the wind power generator and the new parts outside the nacelle at any time according to the demand, it is beneficial to improve the efficiency of maintenance and replacement, and it is not affected by the lifting process. The impact of external weather conditions can better meet the needs of use. In addition, the hoisting and maintenance device has a hoisting assembly that can slide on the guide mechanism and the rotation mechanism, thereby increasing the hoisting range and improving the versatility.

Description of drawings

Fig. 1 is the installation diagram of the lifting maintenance device provided by the present invention in the engine room;

Fig. 2 is the structural representation of support mechanism and guiding mechanism provided by the present invention;

Fig. 3 is a structural schematic diagram of the supporting mechanism, the guiding mechanism and the rotating mechanism provided by the present invention.

In the picture:

100. Lifting maintenance device; 200. Engine room; 201. Upper cover of engine room; 202. Engine seat;

1. Support mechanism; 11. First support body; 111. First support base; 112. First cylinder; 12. Second support body; 121. Second support base; 122. Second cylinder; 13. The first Three supports; 131, the third support seat; 132, the third column; 14, the fourth support body; 141, the fourth support seat; 142, the fourth column;

2. Guide mechanism; 21. Beam; 22. Longitudinal beam;

3. Rotary mechanism; 31. Rotary shaft; 32. Cantilever; 33. Column; 34. Upper mounting plate; 35. Lower mounting plate;

4. Chain hoist.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance. Wherein, the terms "first position" and "second position" are two different positions.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

This embodiment provides a wind generator capable of converting wind energy into electrical energy. As shown in FIG. 1 , the wind power generator includes a nacelle 200 and a lifting maintenance device 100 located in the nacelle 200 . When the wind power generator is working, the nacelle 200 needs to be installed high in the air. In order to facilitate disassembly, the nacelle 200 specifically includes a nacelle seat 202 and a nacelle upper cover 201 arranged up and down. The nacelle upper cover 201 is fastened on the nacelle seat 202. An accommodating space is formed between the two, and one end of the accommodating space is provided with an object-hanging opening, through which the objects to be hoisted enter and exit the accommodating space. The accommodating space is provided with components such as a lifting maintenance device 100, a generator, a generator cooler, a gear box, a gear oil cooler, a shrink disc, and a gear box support. When a part in the nacelle 200 is damaged and needs to be replaced, the lifting maintenance device 100 is used to hoist the damaged part out of the nacelle 200 and hoist a new part into the nacelle 200, thereby realizing parts replacement and maintenance. In this embodiment, for the convenience of description, the specific structure of the lifting maintenance device 100 is described in detail by taking the shafting part of a gear box as an example to be hoisted.

As shown in FIGS. 1 to 3 , the lifting maintenance device 100 includes a gantry tooling, a rotating mechanism 3 and a lifting assembly. The gantry tooling is not only the main supporting component of the lifting maintenance device 100 , but also can lift the shafting parts of the gearbox and move the shafting parts towards or away from the rotating mechanism 3 . In this embodiment, in order to lift the shafting parts of the gearbox nearby, the gantry tooling is installed on the nacelle seat 202 , and is specifically installed on the gearbox support of the gearbox. The rotating mechanism 3 is mainly used to realize the rotation of the shafting parts in the horizontal plane, so that the shafting parts can quickly approach or move away from the load opening. The hoisting assembly is arranged on the gantry tooling and the rotating mechanism 3 , and is used to realize the movement of shafting parts on the gantry tooling and the rotating mechanism 3 .

As shown in FIG. 2 , the gantry tooling includes a supporting mechanism 1 and a guiding mechanism 2 . The guide mechanism 2 includes a crossbeam 21 and a longitudinal beam 22. The crossbeam 21 is arranged on the top of the support mechanism 1 along a first direction, and the longitudinal beam 22 is arranged on the top of the support mechanism 1 along a second direction. The first direction and the second direction are perpendicular. The hoisting assembly includes a first hoisting mechanism, a second hoisting mechanism and a third hoisting mechanism, the first hoisting mechanism is slidably arranged on the beam 21, the second hoisting mechanism is slidably arranged on the longitudinal beam 22; the third hoisting mechanism is slidably arranged on the rotating mechanism 3, the piece to be hoisted is configured to be able to transfer between the first hoisting mechanism, the second hoisting mechanism and the third hoisting mechanism.

Optionally, in this embodiment, the first hoisting mechanism and the second hoisting mechanism both include a monorail trolley and a chain block, the monorail trolley is slidably arranged on the beam 21 or the longitudinal beam 22, and the chain hoist is arranged at the bottom of the monorail trolley . Both the monorail trolley and the chain hoist are prior art, and their specific structures will not be repeated here. The third hoisting mechanism includes a chain hoist 4 and a driving motor, and the driving motor can drive the chain hoist 4 to move on the rotating mechanism 3 . The chain hoist 4 is also a prior art, and its specific structure will not be repeated here.

Optionally, in this embodiment, both the beam 21 and the longitudinal beam 22 are in the shape of an "I", which includes an upper horizontal plate, a vertical plate and a lower horizontal plate connected in the shape of an "I", and the monorail trolley is provided with a slide groove, so that it can be stuck on the lower cross plate and slide along the length direction of the lower cross plate. The crossbeam 21 and longitudinal beam 22 in the shape of "I" not only have good structural rigidity and are not easy to deform, but also help to improve the stability of the movement of the monorail trolley, and are light in weight and easy to purchase. Further optionally, a pulley is also provided on the monorail trolley, and the pulley abuts against the lower cross plate to reduce the frictional force on the monorail trolley when it slides.

The number of beams 21 and longitudinal beams 22 can be one or more. In this embodiment, in order to improve the flexibility of hoisting shaft parts, as shown in Figure 2 and Figure 3, two beams 21 and two longitudinal beams 22 are selected, the two beams 21 are arranged in parallel, and the two longitudinal beams 22 are arranged in parallel, two beams 21 and two longitudinal beams 22 are arranged in a "mouth" or "well" shape, and the gearbox is located in the space formed by the two beams 21 and the two longitudinal beams 22. In order to improve the compactness of the guide mechanism 2 and reduce the use of connectors, in this embodiment, two longitudinal beams 22 are erected above the two cross beams 21 , and the support mechanism 1 only supports the cross beams 21 .

The support mechanism 1 is used to provide stable support for the guide mechanism 2, so as to ensure the stability of the movement of the monorail trolley and the chain hoist. As shown in FIG. 1 , the supporting mechanism 1 is vertically arranged on the nacelle seat 202 , and the beam 21 is arranged on the top of the supporting mechanism 1 . In order to improve the supporting stability, the supporting mechanism 1 includes a plurality of supporting bodies, and each supporting body is supported on the end of the beam 21 . Specifically, as shown in FIG. 2 , in this embodiment, the multiple supports include a first support 11 , a second support 12 , and a third support 13 respectively supported on the four ends of two beams 21 and the fourth support body 14 .

Optionally, the first support body 11 includes a first support base 111 and a first column 112 , the first support base 111 is disposed on the cabin seat 202 , and the first column 112 is disposed on the first support base 111 . The second support body 12 includes a second support base 121 and a second column 122 , the second support base 121 is disposed on the cabin seat 202 , and the second cylinder 122 is disposed on the second support base 121 . The third supporting body 13 includes a third supporting seat 131 and a third column 132 , the third supporting seat 131 is arranged on the cabin seat 202 , and the third column 132 is arranged on the third supporting seat 131 . The fourth supporting body 14 includes a fourth supporting seat 141 and a fourth column 142 , the fourth supporting seat 141 is arranged on the nacelle seat 202 , and the fourth column 142 is arranged on the fourth supporting seat 141 . Further optionally, the first column 112, the second column 122, the third column 132 and the fourth column 142 can all be set as telescopic rod structures, so that the first support body 11 and the second support body can be adjusted as required. 12. The supporting height of the third supporting body 13 and the fourth supporting body 14 .

Of course, in other embodiments, if the longitudinal beam 22 is arranged below the cross beam 21 , then four supports need to be supported on the four ends of the longitudinal beam 22 . If the longitudinal beam 22 and the cross beam 21 are arranged in other forms or when the number of the cross beam 21 and the longitudinal beam 22 is more, it is also possible to add several support bodies, and then the ends of the cross beam 21 and the end of the longitudinal beam 22 are simultaneously support for improved support stability.

As shown in Figure 3, the rotating mechanism 3 comprises a rotary shaft 31 and a cantilever 32, the rotary shaft 31 is rotated and arranged on the guide mechanism 2, and one end of the cantilever 32 is fixedly connected with the rotary shaft 31. In this embodiment, the cantilever 32 is vertically arranged on the On the beam 21 , the third hoisting mechanism is slidably arranged on the cantilever 32 . The axis of the rotary shaft 31 is arranged perpendicular to the top surface of the beam 21, so that the cantilever 32 can quickly rotate in the horizontal plane. Optionally, in this embodiment, the rotation angle of the rotary shaft 31 does not exceed 270°, so as to be able to rotate the maximum rotation angle without interfering with the guide mechanism 2 . Further optionally, a bearing is provided at the joint between the rotary shaft 31 and the crossbeam 21 to reduce the difficulty of rotating the rotary shaft 31 so as to achieve the purpose of being able to rotate freely under manual driving.

In order to facilitate the installation of the rotary shaft 31, as shown in Figure 3, the rotary mechanism 3 also includes an upper mounting plate 34, a lower mounting plate 35 and a column 33, the column 33 is vertically arranged on the top surface of the beam 21, and the upper mounting plate 34 is horizontally arranged On the top of the column 33, the lower mounting plate 35 is horizontally arranged on the bottom surface of the beam 21, the upper mounting plate 34 and the lower mounting plate 35 are oppositely arranged, and the rotary shaft 31 is rotatably connected between the upper mounting plate 34 and the lower mounting plate 35. Of course, in other embodiments, if the height of the beam 21 is sufficient, the column 33 may not be provided, and only the upper mounting plate 34 and the lower mounting plate 35 are provided.

The third hoisting mechanism can move on the cantilever 32, thereby realizing the movement of the parts to be hoisted along the length direction of the cantilever 32, thereby moving the shafting parts of the damaged gear box out of the hoisting port, thereby being located outside the nacelle 200, or The shafting parts of the new gearbox are moved from the outside of the nacelle 200 to the inside of the nacelle 200 through the lifting port.

The lifting maintenance device 100 replaces and maintains the steps of the shafting parts of the gearbox as follows:

First of all, it is necessary to use the jacking device to lift the upper cover 201 of the nacelle to leak out the hanging object; The shafting parts are hoisted and moved toward the rotating mechanism 3 along the first direction and/or the second direction. Here, the first hoisting mechanism or the second hoisting mechanism may be used alone, or both may be used simultaneously, depending on the position of the shafting parts. The first direction is the X direction in the traditional coordinate system, and the second direction is the Y direction.

When the shafting parts reach the rotating mechanism 3, transfer the shafting parts that need to be replaced to the third hoisting mechanism, and then manually drive the cantilever 32 to rotate, so that the cantilever 32 and the shafting parts on it move to the lifting port; After the cantilever 32 stretches out from the lifting port, the driving motor of the third hoisting mechanism works, so that the chain hoist 4 passes through the lifting port and moves to the outside of the engine room 200, and the shafting parts to be replaced are operated by the chain hoist 4 to the ground.

Finally, use the chain hoist 4 to hoist the new shafting parts from the ground to the height where the nacelle 200 is located, and reversely operate the boom 32 to make the new shafting parts enter the nacelle 200, and then use the first hoisting mechanism and/or the second The second hoisting mechanism moves the new shafting parts into place in the nacelle 200, after which the installation of the new shafting parts can be completed to realize the maintenance of the gearbox.

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (10)

1. A hoisting service device, characterized by being arranged within a nacelle (200) of a wind turbine, the hoisting service device (100) comprising:

a support mechanism (1) arranged within the nacelle (200);

The guide mechanism (2) comprises a cross beam (21) and a longitudinal beam (22), and the cross beam (21) and the longitudinal beam (22) are vertically arranged and are arranged on the top surface of the supporting mechanism (1);

one end of the rotating mechanism (3) is rotatably connected to the guide mechanism (2);

the hoisting assembly is used for hoisting the piece to be hoisted along the vertical direction and is configured to be capable of sliding on the guide mechanism (2) and the rotating mechanism (3).

2. The lifting service apparatus of claim 1,

the hoisting assembly comprises a first hoisting mechanism, a second hoisting mechanism and a third hoisting mechanism, the first hoisting mechanism is arranged on the cross beam (21) in a sliding mode, and the second hoisting mechanism is arranged on the longitudinal beam (22) in a sliding mode; the third hoisting mechanism is arranged on the rotating mechanism (3) in a sliding mode, and the piece to be hoisted can be transferred among the first hoisting mechanism, the second hoisting mechanism and the third hoisting mechanism.

3. The lifting service apparatus of claim 2,

The cross beam (21) is in an I shape, and the first hoisting mechanism is clamped on a lower transverse plate of the cross beam (21) and can move along the lower transverse plate of the cross beam (21);

The longitudinal beam (22) is in an I shape, and the second hoisting mechanism is clamped on the lower transverse plate of the longitudinal beam (22) and can move along the lower transverse plate of the longitudinal beam (22).

4. The lifting service apparatus of claim 2,

The rotating mechanism (3) comprises a rotating shaft (31) and a cantilever (32), the rotating shaft (31) is rotatably arranged on the guide mechanism (2), one end of the cantilever (32) is fixedly connected with the rotating shaft (31), and the third hoisting mechanism is slidably arranged on the cantilever (32).

5. The lifting service apparatus of claim 4,

Rotary mechanism (3) still include mounting panel (34) and lower mounting panel (35), it sets up to go up mounting panel (34) the upper portion of guiding mechanism (2), lower mounting panel (35) set up the lower part of guiding mechanism (2), go up mounting panel (34) with lower mounting panel (35) sets up relatively, revolving axle (31) rotate to be connected go up mounting panel (34) with between lower mounting panel (35).

6. the lifting service apparatus of claim 4,

The third hoisting mechanism comprises a chain hoist (4) and a driving motor, and the driving motor can drive the chain hoist (4) to move on the cantilever (32).

7. The lifting service apparatus of claim 2,

First hoisting machine construct with second hoisting machine constructs all including single track dolly and chain block, single track dolly slides and sets up crossbeam (21) perhaps on longeron (22), chain block sets up single track dolly's bottom.

8. the lifting service apparatus of claim 1,

The supporting mechanism (1) comprises a plurality of supporting bodies, and the supporting bodies are respectively used for supporting the end parts of the cross beam (21) or the longitudinal beam (22).

9. The lifting service apparatus of claim 1,

the piece to be hoisted is a gear box.

10. A wind power generator comprising a nacelle (200), characterized by further comprising a lifting service device (100) according to any of claims 1-9, said lifting service device (100) being arranged within said nacelle (200).